KOBELCO CONSTRUCTION MACHINERY CO., LTD. Patent applications |
Patent application number | Title | Published |
20160138243 | CONSTRUCTION MACHINE - Provided is a construction machine which is capable of stably support an exhaust aftertreatment device comprising a first treatment section and a second treatment section arranged in one-above-the-other and side-by-side relation. A hydraulic excavator comprises: an exhaust aftertreatment device comprising a first treatment section and a second treatment section which are arranged in one-above-the-other and in side-by-side relation; a lower plate attached to a lower surface of the exhaust aftertreatment device, and provided above a slewing frame to support the exhaust aftertreatment device from therebeneath in such a manner that the exhaust aftertreatment device is disposed at a position overlapping the engine in side view; and a left vertical plate disposed to extend upwardly from a portion of the lower plate located between the exhaust aftertreatment device and the engine, and attached to a lateral surface of the exhaust aftertreatment device. | 05-19-2016 |
20160137054 | CONSTRUCTION MACHINE - The rear wall portion has a curved portion curved in an approximately arc shape in top plan view to serve as a right or left end thereof. An engine is provided on the upper frame at a position in front of the rear wall portion in such a manner that an interspace is formed between the engine and the curved portion. An exhaust aftertreatment device is provided in front of the rear wall portion while being superposed over the interspace. The exhaust aftertreatment device comprises a first treatment section and a second treatment section. The first treatment section and the second treatment section are supported over the upper frame in a posture where respective longitudinal directions of the first and second treatment sections are oriented parallel to each other in top plan view and along the curved portion in top plan view. | 05-19-2016 |
20160061235 | HYBRID CONSTRUCTION MACHINE - A hybrid construction machine detects the voltage of each cell that forms a battery, calculates a difference voltage between the detected voltage and a predetermined upper-limit working voltage, selects the lower one of the calculated difference voltage and a stored difference voltage, corrects an upper-limit working charging rate to decrease as the selected difference voltage decreases, and controls charging of the battery, based on the corrected upper-limit working charging rate. | 03-03-2016 |
20160032949 | SLEWING DRIVE APPARATUS FOR CONSTRUCTION MACHINE - Provided is a slewing drive apparatus for a construction machine capable of satisfactory pump-flow-rate control regardless of change in engine speed, including a variable displacement hydraulic pump, a slewing motor, a slewing operation device, a control valve, a relief valve, and a pump-flow-rate control device that performs a relief cut control and includes: a section for detecting an engine revolution number Ne and a slewing speed of a slewing body; a section for determining a target pump flow rate Qo that is a sum of a slewing-speed correspondence flow rate Q | 02-04-2016 |
20160032947 | CONSTRUCTION MACHINE - A hydraulic excavator includes control valves connected to a head-side chamber of a boom cylinder, an operating unit configured to switch the control valves, lock valves each provided between the head-side chamber and each of the control valves, and an operation control unit that controls the operation of the lock valves. The lock valves each have a valve element that is configured to move between a locking position at which the discharge of hydraulic oil from the head-side chamber is restricted and an unlocking position at which the discharge of the hydraulic oil from the head-side chamber is allowed. The operation control unit controls the operation of the lock valves so that the valve elements move from the locking position to the unlocking position at different points in time when the operating unit is operated. | 02-04-2016 |
20160031495 | CAB FOR CONSTRUCTION MACHINE - Provided is a cab for construction machine, having an excellent operator protection effect against a lateral load. Provided is a cab disposed on an upper frame of a construction machine, including a pair of rear pillars and a rear panel disposed therebetween. The rear panel includes an outer panel and an inner panel including a plurality of panel portions vertically arranged and a bridge portion partly bridging the panel portions vertically adjacent to each other at a position offset from a lateral center position of the rear panel. The bridge portion forms a low-strength portion having lower strength than that of the panel portions so as to make the low-strength portion include a bending point at which the rear panel is bent when a lateral load acts thereon through an outer rear pillar. | 02-04-2016 |
20160031494 | UPPER SLEWING BODY FOR USE IN CONSTRUCTION MACHINE - Provided is an upper slewing body comprising: an upper frame, a cab including a bottom frame, a plurality of pillars including an outer pillar, and an entrance; an antivibration mount; a displacement restrainer restraining a cab displacement in a direction of rising away from the upper frame; and a reinforcing member attached to a lower end of the outer pillar for reinforcing a joint between the lower end and the bottom frame. The displacement restrainer includes a penetrating member vertically penetrating the reinforcing member and the bottom frame and secured to the upper frame. The displacement restrainer and the reinforcing member includes respective load transmitting surfaces for transmitting a load to each other above the joint between the bottom frame and the outer pillar when the cab is displaced in the rising direction by a specific amount or more. | 02-04-2016 |
20160024749 | HYDRAULIC SHOVEL - Provided is a hydraulic shovel capable of moving a boom, an arm, and a bucket at respective adequate speeds even during complex operations thereof, without a significant pressure loss. This hydraulic shovel includes: a first pump ( | 01-28-2016 |
20160017572 | HYBRID DEVICE AND HYBRID CONSTRUCTION MACHINE INCLUDING SAME - A control unit as a hybrid device is provided on a right side deck of an upper slewing body. The control unit has a quadrangular shape in a plan view thereof, and both electric wires and liquid pipelines for cooling or heating the control unit are connected to the control unit. Connection terminals and pipeline connection openings of the control unit are provided on surfaces that form the sides of the quadrangle in a plan view of the casing and that are oriented in different directions. | 01-21-2016 |
20150376866 | CONSTRUCTION MACHINE - Provided is a construction machine having a plurality of equipment units and a structural body supporting the equipment units, restricting height of each of the equipment units supported by the structural body with no considerable decrease in the strength of the structural body and no considerable restriction on the height dimension of the equipment units. The construction machine includes a structural body having a plurality of beam members, a first equipment unit placed on the structural body, and a second equipment unit which is other than the first equipment unit and placed on the structural body. The plurality of beam members includes a first beam member having a first placement surface on which the first equipment unit is placed and a second beam member having a second placement surface on which the second equipment unit is placed, the second placement surface being lower than the first placement surface. | 12-31-2015 |
20150369396 | PIPE SUPPORTING DEVICE FOR CONSTRUCTION MACHINE - A pipe supporting device includes a support portion for supporting a hydraulic pipe along an axis of the hydraulic pipe extending along a length of a boom, and a weld portion to be connected with an outer surface of the boom by fillet welding. The weld portion has a plurality of peripheral surfaces, the plurality of peripheral surfaces including: a pair of opposite perpendicular standing surfaces and extending in a direction substantially perpendicularly intersecting a first stress direction along the axis of the hydraulic pipe; and a pair of oblique standing surfaces extending from respective leading ends of the pair of opposite perpendicular standing surfaces to join each other. Each of the oblique standing surfaces extends in a direction oblique to the first stress direction and joins the corresponding one of the perpendicular standing surfaces at an acute angle. | 12-24-2015 |
20150357885 | ELECTRIC MOTOR - An electric motor to be easily assembled while taking the advantages of a retrofitted electric motor, excellent maintenance performance and no fear of damage in a temperature sensitive device due to resin injection pressure. The electric motor includes an electric motor shaft, a rotor, a stator, a housing, a sealing body formed of sealant to cover a coil end of the stator, a temperature sensitive device, an end cover, and a resilient retaining member. The electric motor shaft passes through the end cover. The sealing body includes a temperature-sensitive-device support surface opposed to the end cover. The temperature sensitive device is retained between the end cover and the temperature-sensitive-device support surface while the retaining member is interposed between the temperature sensitive device and the end cover. | 12-10-2015 |
20150354605 | CONSTRUCTION MACHINE - A construction machine is provided which is capable of warming up without an additional hydraulic device. A hydraulic excavator includes a cooling oil line connected to an arm control valve for leading hydraulic oil discharged from the arm control valve to a tank through an oil cooler when the arm control valve is shifted to an extension position, and a non-cooling oil line connected to the arm control valve for leading hydraulic fluid discharged from the arm control valve to the tank running away from the oil cooler when the arm control valve is shifted to a neutral position. The arm control valve includes a guide passage provided at the neutral position for leading hydraulic fluid discharged from a hydraulic pump to the non-cooling oil line. | 12-10-2015 |
20150354167 | HYDRAULIC CONTROL DEVICE AND CONSTRUCTION MACHINE WITH SAME - A boom cylinder circuit is provided with a boom control valve for controlling supply and discharge of hydraulic oil to and from a boom cylinder, and a merge switching valve operable to be switched between a supply position at which hydraulic oil is suppliable from a first hydraulic pump to the boom control valve, and a blocking position at which a flow of hydraulic oil is blocked. A controller switches the merge switching valve to the blocking position when a combined operation of a boom lowering operation and an arm pushing operation is detected by pilot pressure sensors, and switches the merge switching valve to the supply position when only one of the boom lowering operation and the arm pushing operation is detected. | 12-10-2015 |
20150330413 | HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE - A hydraulic circuit for a construction machine, capable of enhancing the effect of reducing a pressure loss due to return oil from a head-side chamber of a hydraulic cylinder, with a simple structure. The circuit includes a hydraulic cylinder, a control valve, a return pipeline, and a tank direct-communication line providing direct communication between the control valve and a tank separately from the return pipeline. The control valve has a flow path leading return oil from a head-side chamber of the hydraulic cylinder to the tank direct-communication line and a flow path leading return oil from a rod-side chamber of the hydraulic cylinder to the return pipeline. | 11-19-2015 |
20150299987 | CONSTRUCTION MACHINE - A construction machine includes: a lower traveling body; an upper slewing body; a front attachment; a plurality of hydraulic actuators including traveling motors; hydraulic pumps; a plurality of control valves for the hydraulic actuators; a plurality of operation units for the control valves; traveling operation detectors that detect operations for the operation units for the traveling motors of the operation units; a back-pressure compensation valve generating back pressure in a return pipe line connecting each of the control valves and a tank and having a setting pressure switchable between low and high pressure setting values; and a back-pressure control section performing a back-pressure lowering control of making the setting pressure of the back-pressure compensation valve be the low pressure setting value when traveling operation amounts in the traveling operation units are large. | 10-22-2015 |
20150275939 | HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE - A hydraulic circuit changeable between a state of executing a regeneration action and a state of stopping the regeneration action. The hydraulic circuit includes hydraulic pumps; a plurality of hydraulic actuators; a plurality of control valves provided for respective hydraulic actuators; a regeneration line through which return oil returned from a specific hydraulic actuator of the hydraulic actuators to a tank is supplied to a regeneration target; a regeneration valve; a meter-out valve; and a flow-path selection device selecting a flow path for the return oil from a first flow path supplying the return oil to the regeneration line to cause the regeneration action and a second flow path supplying the return oil to the control valve for the specific hydraulic actuator to stop the regeneration action. | 10-01-2015 |
20150275477 | CONSTRUCTION MACHINE - Provided is a construction machine that enables to reduce the burden of the operator when the operator replenishes a liquid reducing agent. The construction machine includes an upper frame slewably provided on a lower traveling body, a reducing agent tank provided on the upper frame, and configured to accommodate therein a liquid reducing agent for reducing nitrogen oxide contained in exhaust gas, and a passage surface provided on the upper frame for allowing the operator to move to an engine. The reducing agent tank has an upper placement portion disposed on the right side of the passage surface at a position higher than the passage surface. The upper placement portion of the reducing agent tank has a replenishing port for allowing the operator to replenish the liquid reducing agent. The replenishing port is provided so as to face the passage surface. | 10-01-2015 |
20150267379 | UPPER SLEWING BODY FOR CONSTRUCTION MACHINE - Provided is an upper slewing body allowing elements to be compactly arranged while preventing required length of a hydraulic pipe from increase. The upper slewing body includes an upper frame, an engine, a hydraulic pump coupled thereto, a control valve forward of the engine and rearward of a slewing axis, and a rear tank between the engine and the control valve. The control valve is oblique to a frame lateral direction so as to locate a front end portion thereof forward of an inner end portion thereof. The rear tank has a rear opposition side surface opposed to a rear side surface of the control valve while being oblique to the rear side surface thereto. | 09-24-2015 |
20150252820 | HYDRAULIC DRIVING APPARATUS FOR WORKING MACHINE - Provided is a hydraulic driving apparatus including a calculation section calculating a temporary target engine rotation speed corresponding to an engine operation amount, a calculation section calculating a temporary target pump displacement volume based on first-control and second-control target pump displacement volumes corresponding to an actuator operation amount and a pump load pressure, and a command section calculating a final target engine rotation speed and a final target pump displacement volume to output commands. The command section calculates a target pump discharge amount from the temporary target engine rotation speed and the temporary target pump displacement volume, sets the final target pump displacement volume to one larger than the temporary target pump displacement volume, and sets the final target engine rotation speed to one being lower than the temporary target engine rotation speed and allowing a pump discharge amount equivalent to the target pump discharge amount to be obtained. | 09-10-2015 |
20150247439 | REDUCTANT CONTAINER - A reductant container having: a tank main body that accommodates a reductant; a heating member disposed in the tank main body and configured to generate heat so as to increase a temperature of the reductant; a covering member covering the heating member and having an inflow portion, the inflow portion allowing some of the reductant to flow into the covering member; a reductant supply pipe through which the reductant in the covering member is supplied to the outside of the tank main body; and a temperature measuring unit having a temperature sensor disposed in the covering member to sense a temperature of the reductant, the temperature measuring unit determining the temperature sensed by the temperature sensor, wherein the covering member has an upper wall covering the heating member from above, the upper wall having a lower surface that is inclined so as to be raised toward the temperature sensor. | 09-03-2015 |
20150233092 | FLOOR MEMBER AND WORKING MACHINE - A floor member includes a floor plate extending in a length direction along a front-rear direction of a cab. The floor plate includes front-left corner portion, front-right corner portion, rear-left corner portion, and rear-right corner portion; a first vertical beam member; a second vertical beam member; and a plurality of support members which support the first vertical beam member, the second vertical beam member, and the floor plate in respective regions including a region where the front-left corner portion and a first front end overlap each other, a region where the rear-left corner portion and a first rear end overlap each other, a region where the front-right corner portion and a second front end overlap each other, and a region where the rear-right corner portion and a second rear end overlap each other. | 08-20-2015 |
20150211643 | VALVE AND CONSTRUCTION MACHINE WITH THE SAME - Provided is a valve restrained from unintentional close. The valve includes a valve element formed with a flow-path hole, a holding member having inlet and outlet ports and holding the valve element while permitting its rotational movement in first and second directions, and a rotational restriction section. The valve element has an open position for making communication between the ports through the flow-path hole and a close position for blocking between the ports. The rotational restriction section restricts the rotational movement so as to stop the rotational movement thereof in the first direction at the open position where a specific part of the outer peripheral surface of the valve element overlaps the inlet port and receives pressure of the liquid to allow the pressure to impart a rotational bias in the first direction to the valve element in the open position. | 07-30-2015 |
20150211401 | EXHAUST GAS PROCESSING DEVICE AND CONSTRUCTION MACHINE - An exhaust gas processing device includes: an exhaust gas processing unit positioned above an engine; a reduction agent tank accommodating a reduction agent; a reduction agent supply unit attached to the exhaust gas processing unit; a cooling unit having a first end portion and a second end portion; a cooling water accommodation unit having a lower portion positioned below the cooling unit; a first pipe connecting the first end portion and the cooling water accommodation unit; a second pipe connecting the second end portion and the cooling water accommodation unit; a circulating device driven by the engine. The first pipe and the second pipe are connected to the lower portion. The first pipe includes: a connection portion connected to the first end portion; an apex portion positioned above the cooling unit; a supplying portion positioned between the connection portion and the apex portion. Thus, it is possible to suppress an increase in the temperature of the reduction agent supply unit. | 07-30-2015 |
20150211210 | CONSTRUCTION MACHINE HAVING ELECTRICAL COMPONENT - Provided is a construction machine including an electrical component and efficiently cooling it. The construction machine includes an upper slewing body having an air intake chamber capable of taking in air, an engine, the electrical component, an air intake duct guiding the air inside the air intake chamber toward the engine, a blow fan directing the air inside the air intake chamber toward the engine through the air intake duct, and electrical-component cover covering the electrical component. The electrical-component cover defines an air flow path for flowing air along the electrical component, between the electrical-component cover and the electrical component thereinside. The electrical-component cover includes an air inlet communicating an upstream portion of the air flow path with the air intake chamber and an air outlet communicating a downstream portion of the air intake chamber with the air intake duct. | 07-30-2015 |
20150204051 | CONSTRUCTION MACHINE - Provided is a construction machine having a sufficient space for tool accommodation and allowing reducing agent to be supplied into a reducing-agent tank easily. The construction machine includes an engine, a reducing-agent tank having a tank body and a supply portion, and a tool box. The tool box includes a box body defining an accommodation space having an opening which opens the accommodation space outwards and allows a tool to be put into and taken from the accommodation space through the opening, and an opening/closing cover which opens and closes the opening. The tank body is outside the box body. The supply portion includes a basal end connected to the tank body and a distal end located in the accommodation space at a position making the distal end visible from the outside of the box body through the opening which is opened. | 07-23-2015 |
20150204049 | UPPER SLEWING BODY FOR CONSTRUCTION MACHINE - A boom foot pin is attached to a pair of vertical plates so as to be able to be pulled out along an axial direction of the boom foot pin. A housing box has a box main body with a housing space inside and an opening/closing lid configured to allow an opening region of the box main body to be opened and closed. The box main body is disposed on the right of the right vertical plate in a state where the boom foot pin is placed opposite the housing space with reference to the opening region in a side view in which the upper slewing body is viewed along an axial direction and the box main body is shaped to open the boom foot pin in the axial direction. The opening/closing lid is rotated to a position where the opening region is closed to lie at a position where the opening/closing lid overlaps the boom foot pin in the side view, and is rotated to a position where the opening region is opened to lie at a position where the boom foot pin is opened in the axial direction. | 07-23-2015 |
20150191895 | SIDE FRAME FOR CONSTRUCTION MACHINE - The present invention aims to reduce the costs of construction machine by providing a side frame that can be shared by a plurality of construction machines of different models. | 07-09-2015 |
20150184568 | NOX REDUCING DEVICE - Provided is a NOx reducing device which is capable of effectively protecting a NOx controller against heat and water, while suppressing an increase in cost of a construction machine and deterioration in assemblability of the NOx controller. The NOx reducing device comprises a device body, a tail pipe provided at an outlet end portion of the device body, a NOx controller, and a mount table supporting the device body. The mount table comprises a top plate and a leg supporting the top plate. The device body and the tail pipe are provided on an upper side of the top plate. The NOx controller is provided with respect to a lower surface of the top plate in such a manner that the NOx controller is entirely covered from thereabove by the top plate. | 07-02-2015 |
20150184362 | SLEWING-TYPE WORKING MACHINE - Provided is a working machine including an upper slewing body, a hydraulic motor, a slewing electric motor, a hydraulic pump, a slewing operation device, a control valve, a communication valve having an open position for bringing a motor outlet-side line into direct communication with a tank or a motor inlet-side line, bypassing the control valve, and a close position for blocking the communication, and a control device which performs (i) determining, as a target value, a pressure generated in the hydraulic motor without the communication valve, or a torque obtained from the pressure, based on an operation state and a slewing state, (ii) determining, as an actual value, a pressure actually generated in the hydraulic motor or a torque obtained from the pressure, and (iii) outputting a torque command based on a value obtained by subtracting the actual value from the target value. | 07-02-2015 |
20150176245 | CONSTRUCTION MACHINE - Provided is a construction machine having a central foothold and a maintenance access passage with high safety. The construction machine includes an upper slewing body including: an upper frame, an engine compartment, a cabin on a right or left region of the upper frame, a central foothold immediately forward of the engine compartment and on a central region of the upper frame widthwise of the upper frame, and a maintenance access passage extending rearward while elevated to guide a worker from the ground forward of the upper frame to the central foothold on a side opposite to the cabin. Widthwise of the upper frame, an inward edge of an upper end portion of the maintenance access passage is located inward of one edge of the central foothold, to thereby form a transit zone between the maintenance access passage and the central foothold. | 06-25-2015 |
20150159345 | CONSTRUCTION MACHINE - Provided is a construction machine which is capable of disposing a manually-operated unit at a position where it can be manually operated by a worker located around an upper slewing body, while suppressing an increase in size of the upper slewing body in a horizontal direction. The manually-operated unit comprises a unit body, and a rotary lever attached with respect to the unit body in such a manner as to be rotatable about a preset rotational axis, in a posture where it extends beyond an outer peripheral surface of the unit body in a direction perpendicular to the rotational axis. A fuel tank has an undersurface opposed to the bottom plate, and a lower-outer lateral surface extending upwardly from the undersurface in such a manner as to face an outer edge portion side of a bottom plate. The unit body is disposed above the bottom plate and beneath the undersurface of the fuel tank, in a posture where the rotational axis extends approximately horizontally. The rotary lever is disposed outward of a lower edge portion of the lower-outer lateral surface of the fuel tank, so as to permit rotation of the rotary lever. | 06-11-2015 |
20150152980 | CORD-LIKE MEMBER HOLDER FOR WORKING MACHINE - Provided is a cord-like member holder for holding a cord-like member inserted into a through-hole provided in a partition wall of an operator's cab of a working machine, including a grommet made of elastic material to have an inner peripheral surface surrounding a cord-like member insertion hole and a sealing surface, and a fixture. The fixture includes a clamp section to clamp the grommet to bring an inner peripheral surface of the grommet into close contact with an outer peripheral surface of the cord-like member, and a fixing section joined to the clamp section and fastened to the partition wall. The clamp section clamps the grommet while relative displacement of the clamp section to the grommet in a direction of approaching the partition wall is restrained, and the fixing section is fastened to the partition wall to bring the sealing surface into close contact with the partition wall. | 06-04-2015 |
20150136503 | CONSTRUCTION MACHINE - Provide is a construction machine allowing an air cleaner to be located entirely low while securing dust-discharge function thereof, with no risk of adverse effects such as diffusion of dusts and complication in structure. The construction machine includes an engine and an air cleaner connected to an intake-side portion of the engine to filter intake air. The air cleaner includes an air-cleaner main body which filters the intake air and an evacuator which discharges dusts separated from the intake air and protrudes downward beyond the air-cleaner main body. The air-cleaner main body is placed on an air-cleaner placement surface, the evacuator protruding downward beyond the air-cleaner placement surface at a position deviated outward from the air-cleaner placement surface. | 05-21-2015 |
20150136502 | CONSTRUCTION MACHINE - Provided is a construction machine including: an upper slewing body including an upper frame; an engine room on the rear portion of the upper frame; a cabin on the front portion on the right or left side of the upper frame; a plurality of tanks including a fuel tank and a hydraulic tank installed on the upper frame; an air cleaner; a center foothold on the intermediate portion in the width direction of the upper frame and forward of the engine room; and a climbing step at the opposite side to the cabin. A first tank of the plurality of tanks is placed on a portion on the right or left side of the upper frame, and a second tank is arranged on a portion between the cabin and the engine room on the opposite side to the first tank. The air cleaner is superposed on the second tank. | 05-21-2015 |
20150136501 | CONSTRUCTION MACHINE INCLUDING AIR CLEANER - Provided is a construction machine including an air cleaner and allowing the air cleaner to be easily installed with no enlargement of an installed space while surely avoiding the interference with other structure. The construction machine includes: an air cleaner; a pipe connected to an exhaust port of the air cleaner; a seat plate on which the air cleaner and the pipe are mounted to form a subassembly; and a device including an upper surface on which the subassembly is mounted to form a device-assembly. The subassembly is allowed to be displaced between a first position apart from a first structure and a second position close to the first structure and apart from a second structure and to be fixed at each of the positions. | 05-21-2015 |
20150136057 | CONSTRUCTION MACHINE - Provided is a construction machine including an air cleaner having a cylindrical outer peripheral surface and an air intake pipe, wherein the assembly of the air cleaner and the air intake pipe can have a reduced width size in the front-rear direction. The air intake pipe has a returning portion and a downstream-side portion. The downstream-side portion has a cross section having a shape including a hypotenuse portion inclined toward the air cleaner, arranged in the state where at least a part of the hypotenuse portion is located in a space defined between the cylindrical outer peripheral surface of the air cleaner and an air-cleaner placement surface. | 05-21-2015 |
20150126319 | DRIVE DEVICE FOR CONSTRUCTION MACHINE - A drive device for a construction machine, which includes a speed reducer and a brake mechanism, wherein the speed reducer has a casing in which lubricating oil and the brake mechanism are provided, and wherein the brake mechanism includes: a ring-shaped brake piston; and a brake plate configured to generate a braking force by a pressing force of the brake piston, and wherein the brake piston has: a plurality of oil pockets provided in the brake piston at respective positions along a circumferential direction of the brake piston, each of the oil pockets formed as a space capable of storing lubricating oil; oil inlets allowing lubricating oil rising during operation of the drive device to be introduced into the oil pockets respectively; and oil outlets allowing lubricating oil stored in the respective oil pockets to be discharged. | 05-07-2015 |
20150125248 | CONSTRUCTION MACHINE - Provided is a construction machine including an upper slewing body slewably mounted on a lower travelling body and an electric component attached to the upper slewing body. The upper slewing body includes an operator seat, a seat stand including a top plate portion having an upper surface on which the operator seat is placed, an engine disposed below the top plate portion, a heat exchanger disposed, with a space between the heat exchanger and the seat stand, on one outer side of the seat stand in a width direction; and a partition member disposed in the space to vertically partition the space so as to block upward transmission of heat of the engine. The electric component is disposed above the partition member and on the one outer side of the seat stand inside the upper slewing body. | 05-07-2015 |
20150115661 | WORKING MACHINE - Provided is a working machine including a console box restrained from wobble. The working machine includes a machine body having an operator's seat and a console box at a side of the operator's seat. The console box includes a box body and a box cover covering the box body. The box cover internally includes a first cover half installed on the box body with first fitting portions and a second cover half internally including second fitting portions fitted with the respective first fitting portions. The second cover half abuts on the first cover half and coupled to the first cover half by respective interfittings of the first and second fitting portions. The box body includes a support portion making contact with an inner surface of the second cover half to support the second cover half. | 04-30-2015 |
20150115660 | CONSTRUCTION MACHINE - Provided is a construction machine capable of easy removal of an electric-component box for maintenance of a maintenance-requirement device, including a seat stand, a partition wall provided in an under-seat space under the seat stand to define a front space, an electric-component box installed in the front space, a maintenance-requirement device rearward of the front space, and a harness connecting an electric component in the electric-component box to an external device and including a downward-extending portion extending downward from the height of a wiring port in the seat stand and an upward-extending portion extending upward from the height of a lower end of the downward-extending portion, thus routed in a devious path including allowance for allowing removal of the electric-component box between a position for closing a rear opening in the partition wall and a position for allowing maintenance work for the maintenance-requirement device through the rear opening. | 04-30-2015 |
20150115659 | WORKING MACHINE HAVING CONSOLE BOX - Provided is a working machine capable of preventing excessive force from being exerted on a hydraulic hose connected to a console box by movement of the console box. The working machine includes a machine body including an operation space on a floor surface, a seat stand in the operation space and including a side wall portion defining an accommodation space, an operator's seat, a console box capable of moving between a fall-down position and an upturn position, and a hydraulic hose including an over-floor region extending upward from the floor surface to be connected to a front part of the console box and accommodated in the accommodation space so as to have a curved portion. The side wall portion has an oblique guide surface which guides the curved portion to make the curved portion slide along the oblique guide surface by turning of the console box. | 04-30-2015 |
20150115657 | CONSTRUCTION MACHINE WITH PILOT HOSES - Provided is a construction machine where a pilot hose is easily routed. The construction machine includes a seat stand, an operator's seat provided on the seat stand, a remote control valve provided just above a front end of the seat stand at least one of right and left sides of the operator's seat; a hydraulic valve; and a pilot hose interconnecting the remote control valve and the hydraulic valve. The seat stand has an upper surface including a specific surface located beneath the remote control valve and a reference surface on which the operator's seat is installed. A step is provided between the specific surface and the reference surface to make the specific surface be lower than the reference surface, thus enlarging a space for routing the pilot hose beneath the remote control valve. | 04-30-2015 |
20150114748 | WORK MACHINE - A work machine includes a machine body, the machine body includes a bottom plate having an air outlet, and an exhaust air duct, the air outlet includes a major opening portion and a wide portion that is disposed with the major opening portion side by side in a left and right direction, the wide portion including a portion located immediately under an engine and having a greater width in a front and rear direction than a width of the major opening portion in the front and rear direction, the exhaust air duct includes a duct base portion including a lower opening that communicates with the air outlet, and an extension portion having an upper opening that is provided at an upper end thereof, and the duct base portion includes a wide-portion covering portion that covers the wide portion at a position immediately under the engine. | 04-30-2015 |
20150114489 | VALVE AND CONSTRUCTION MACHINE WITH THE SAME - A valve capable of restraining a valve element having a flow-path hole from unintentional rotation to close the valve is provided midway of a flow pipe, including the valve element and a holding member holding the valve element while permitting rotational movement thereof and having inlet and outlet ports. The valve element makes rotational movement between a first position for bringing the ports into communication with each other through the flow-path hole and a second position for blocking the communication. The flow-path hole has inlet and outlet openings facing respective inlet and outlet ports, in the first position. The inlet opening has a shape capable of embracing an outer edge of a valve-element-side opening of the inlet port facing the valve element and a size greater than that of the outer edge of the valve-element-side opening circumstantially of the rotational movement of the valve element. | 04-30-2015 |
20150108859 | ELECTRIC MOTOR ASSEMBLY AND MANUFACTURING METHOD THEREOF - Provided are, an electric motor assembly capable of preventing a sealant from leakage through a lead-wire drawing portion, and an electric motor manufacturing method with use of the electric motor assembly. The electric motor assembly includes a rotor ( | 04-23-2015 |
20150107234 | BOOM DRIVING APPARATUS FOR CONSTRUCTION MACHINE - Provided is an apparatus for driving a boom of a construction machine, allowing required power to be reduced. The construction machine includes a boom cylinder | 04-23-2015 |
20150101320 | GAS RELEASE APPARATUS FOR CONSTRUCTION MACHINE - Provided is an apparatus which is capable of excellently mixing exhaust gas discharged from an engine with exhaust air to thereby improve lowering of temperature of the exhaust gas and suppression of noise. The apparatus comprises: a duct provided beneath an engine and having an upper edge surrounding an exhaust air inlet; an exhaust-gas pipe having an intra-duct portion extend inside the duct in a direction approximately perpendicular to a flow direction of the exhaust air; and an exhaust-gas-pipe cover provided just above the intra-duct portion to protect the intra-duct portion from oil which can drop down from above. | 04-16-2015 |
20150099604 | DRIVE DEVICE FOR CONSTRUCTION MACHINE - A drive device for a construction machine includes a speed reducer and a brake mechanism. The speed reducer includes a rotating shaft disposed in a casing, and a planetary gear type speed reducing unit disposed in the casing. The speed reducing unit includes a sun gear, a ring gear, a planetary gear which is meshed with the sun gear and the ring gear, and a spider member which supports the planetary gear so that the planetary gear is rotatable. The brake mechanism includes a rotating-shaft-side brake plate provided on an outer periphery of the spider member in a state that the rotating-shaft-side brake plate is integrally rotated with the spider member, a casing-side brake plate provided on the casing, and a brake piston which generates the braking force by bringing the rotating-shaft-side brake plate and the casing-side brake plate to press contact with each other. | 04-09-2015 |
20150090506 | POWER TRANSMISSION DEVICE AND HYBRID CONSTRUCTION MACHINE PROVIDED THEREWITH - A configuration is provided to directly utilize the power of an engine as the power of a hydraulic pump, and to efficiently perform power generation and engine assist. The configuration is provided with an engine; a generator which is configured to generate electric power by an operation of the generator using the power of the engine; a battery which is configured to store the electric power generated by the generator; a motor which is configured to be operated by the power of the engine and by the electric power of the battery; a hydraulic pump connected to the motor so as to be driven by operation of the motor; and a power divider connected to the engine, the generator, and the motor so that the power of the engine is distributed to the generator and to the motor. | 04-02-2015 |
20150086315 | HYBRID CONSTRUCTION MACHINE - Provided is a hybrid construction machine capable of preventing overcharge, comprising: an engine; a generator-motor; a hydraulic pump; a hydraulic actuator to be operated by the hydraulic pump as a hydraulic pressure source; an actuator regeneration section to make a regenerative action of generating actuator regenerated-electric-power through return fluid from the hydraulic actuator; an electric storage device; a charging-rate detector; and a control section. The control section performs: causing the electric storage device to be charged with electric power generated by the generator-motor and the actuator regenerated-electric-power; causing the generator-motor to make a motor action through electric power stored in the electric storage device to assist the engine; and a regeneration control including stopping the generator action and restricting the actuator regenerated-electric-power, when a detected charging rate of the electric storage device is not smaller than a preset charging-rate limitation value. | 03-26-2015 |
20150084387 | CONSTRUCTION MACHINE - The construction machine includes a floor plate, a seat and a control box provided on the floor plate, a support plate having an end portion, in a left-right direction, configuring a supporting end portion, on which the control box is mounted, a second slide rail that extends in a front-rear direction and is attached to a lower surface side of the support plate, and a reinforcing block that extends in a direction crossing the second slide rail in a plan view. The reinforcing block has a portion extending toward an end surface of a supporting end portion from a position in an area of the second slide rail in a plan view, and the portion being attached to the supporting end portion of the support plate. | 03-26-2015 |
20150075895 | WORKING MACHINE - An upper slewing body includes a rear wall portion covering an engine room from a rear side, a bottom plate disposed so as to cover the engine room from a lower side and having an exhaust opening, and a pair of vertical plates standing upright on the bottom plate. A rear end portion of the vertical plate has proximate rear end surfaces disposed adjacent to the rear wall portion and a cutout portion formed by recessing the rear end surface of the vertical plate toward the front side with respect to the proximate rear end surfaces. A distal end portion of a tail pipe is introduced between the vertical plates and through the cutout portion from the outer position of the vertical plates and extends along the exhaust opening in a state where the distal end portion of the tail pipe faces the exhaust opening. | 03-19-2015 |
20150066313 | CONTROL DEVICE AND CONSTRUCTION MACHINE PROVIDED THEREWITH - A control device is configured to sufficiently reduce the drive loss of a hydraulic pump. The control device is provided with a controller configured to control a regeneration valve to switch to a regeneration state, and to control the flow rate of a second hydraulic pump to reduce the ejection flow rate of the second hydraulic pump in accordance with regeneration of hydraulic oil through the regeneration valve when a combined operation of lowering a boom and pressing an arm is performed. The controller outputs a command for setting the number of rotations of an engine to be smaller than the rotation number designated by a rotation number designating unit when the ejection flow rate of the second hydraulic pump is not larger than a predetermined flow rate during the combined operation. | 03-05-2015 |
20150059453 | FUEL PROPERTY DETECTION APPARATUS FOR CONSTRUCTION MACHINE - Provided is an apparatus for detecting property of fuel in a construction machine, with use of a sub-tank, the apparatus being capable of minimizing an influence on the detection given by water contained in fuel. The apparatus includes a sub-tank between an engine and a fuel tank of the construction machine, a fuel introducing pipe through which fuel is introduced to the sub-tank from the fuel tank, a fuel discharger through which fuel in the sub-tank is discharged to the engine, and a sensor. The sub-tank has a bottom section having a bottom fuel outlet for discharging fuel from the bottom section. The fuel discharger includes a bottom fuel discharging pipe connected to the bottom fuel outlet. | 03-05-2015 |
20150046003 | ELECTRIC POWER CONTROL APPARATUS FOR CONSTRUCTION MACHINE - Provided is an electric power control apparatus capable of suppressing charge/discharge with respect to an electrical storage device under an anomalous condition. The electric power control apparatus includes an electrical storage device including electrical storage modules, a module-temperature detection section, a temperature-condition judgment section, an adopted-module-temperature selection section, and a charge/discharge-electric-power-upper-limit setting section. The temperature-condition judgment section makes a judgment on a temperature condition of the electrical storage device based on a temperature detected by an electrical-storage-device temperature detection section. The charge/discharge-electric-power-upper-limit setting section sets charge/discharge electric power upper limit of the electrical storage device, based on a module temperature (Tmin) which is deviated to a side of a non-steady temperature condition and selected by the adopted-module-temperature selection section, when the electrical storage device is judged to be under the non-steady temperature condition. | 02-12-2015 |
20150044007 | HYDRAULIC CONTROL DEVICE AND CONSTRUCTION MACHINE PROVIDED WITH SAME - A hydraulic control device that reduces the loss of the power of a pump in combined operation of boom lowering and arm pushing. A controller performs single control of increasing capacity of a first pump in accordance with increase in an operation amount of a boom operation member, in a single operation of the boom lowering. On the other hand, the controller restricts the capacity of the first pump compared to capacity in the single control, during a restriction control period when the combined operation of boom lowering and arm pushing is detected, and the operation amount of the boom operation member is a prescribed operation amount or more. | 02-12-2015 |
20150025726 | HYBRID CONSTRUCTION MACHINE - Provided is a hybrid construction machine preventing an electrical storage device from overcharge, including a hydraulic actuator, a hydraulic pump, a generator-motor which performs electric generator and motor actions, an engine, an electric actuator which generates regenerative electric power, an electrical storage device which performs a charge-and-discharge action with the generator-motor and the electric actuator, a charge-rate detector which detects a charge rate C1 of the electrical storage device, and a control section which controls an operation of the generator-motor and a charge-and-discharge action of the electrical storage device. The control section, when the charge rate C1 exceeds a set value Cs, performs overcharge-prevention control of making assist power by the electric motor action of the generator-motor be greater than that when C1≦Cs, the set value Cs predetermined as a charge rate at which receiving the regenerative electric power can overcharge the electrical storage device. | 01-22-2015 |
20140367534 | SHEET STAND AND WORKING MACHINE INCLUDING SAME - A seat stand includes a seat support section including an installation plate portion having an upper surface on which a seat is provided and an left control box support section extending from a seat support section to the left side of the seat and supporting a left control box. The left control box support section includes an extension portion extending sideward from the installation plate portion and including an upper surface on which the left control box is supported. A arranging space is provided under the extension portion in such a manner that a connection line extending from the left control box supported on the extension portion is arranged through the arranging space. A cutout portion, formed in the extension portion, penetrates the extension portion in a vertical direction and is open sideward. | 12-18-2014 |
20140367528 | CONSTRUCTION MACHINE - A bar-like member includes a base end portion, a leading end portion opposite to the base end portion, and a fixed portion provided between the base end portion and the leading end portion and fixed to an upper frame. A binding band is adapted to bind the bar-like member and an arranging member together in order to fix the arranging member arranged along the bar-like member. The fixed portion of the bar-like member is formed by folding the bar-like member between the base end portion and the leading end portion, and has an outer peripheral surface fixed to the upper frame in abutting contact with the upper frame. The leading end portion of the bar-like member is positioned away from the upper frame by fixing the outer peripheral surface of the fixed portion to the upper frame. | 12-18-2014 |
20140360354 | CONSTRUCTION MACHINE - Provided is a construction machine with valves and hoses whose routing operations are simplified. The construction machine includes an upper frame, a control valve assembly, remote control valves, an operation-pattern selector valve, remote control hoses, pilot hoses, and actuator hoses. The upper frame includes a bottom plate and a floor plate, allowing an operation seat to be provided on the upper frame. The control valve assembly and the operation-pattern selector valve are provided in an underfloor space between the bottom plate and the floor plate. A partition wall stands upright on the bottom plate at a rear side of the control valve assembly. The operation-pattern selector valve has a shaft and a handle connected thereto, disposed in such a horizontal posture that the shaft extends horizontally, at a front side of the control valve assembly as viewed from the operation seat. | 12-11-2014 |
20140354205 | MOTOR CONTROLLER AND CONSTRUCTION MACHINE PROVIDED THEREWITH - There is provided a motor controller capable of suppressing the rotation of a motor at the time of discharging an electric accumulator, and a construction machine provided with the motor controller. A motor controller | 12-04-2014 |
20140354197 | MOTOR CONTROLLER AND CONSTRUCTION MACHINE PROVIDED THEREWITH - There is obtained a configuration capable of rapidly decelerating a motor even if a failure occurs in the communication between a controller and a motor control unit in a motor controller in which a speed command is input from the controller to the motor control unit. A motor controller | 12-04-2014 |
20140354191 | INVERTER DEVICE FOR DRIVING ELECTRIC MOTOR - An object of the present invention is to provide an inverter device for driving an electric motor, which allows control stability and efficiency to be ensured over a wide region of the speed of the electric motor. The inverter device includes a rotational-speed detection section which detects a rotational speed of the electric motor, a carrier-frequency calculation section which calculates a carrier frequency on the basis of the detected rotational speed, and a carrier-frequency switching section which switches, on the basis of the calculated carrier frequency, the carrier frequency used for performing PWM control on the electric motor. The carrier-frequency calculation section calculates, as the carrier frequency, a frequency increased with an increase in the electric-motor rotational speed detected by the rotational-speed detection section. | 12-04-2014 |
20140346419 | WORKING MACHINE AND MAINTENANCE METHOD THEREOF - Provided is a working machine including a device to be maintained and a winch disposed thereover and enabling a maintenance operation. The working machine includes a base machine, at least one device to be maintained installed at the base machine, and a winch which is driven to wind an operation rope. The winch is attached to the base machine to be pivotable, about a winch support shaft, between a use position at which the winch is used while closing at least a part of a maintenance space over the device to be maintained and a maintenance position at which the winch opens the maintenance space upward to enable the maintenance operation to be performed. | 11-27-2014 |
20140331664 | SLEWING TYPE WORKING MACHINE - Provided is a slewing-type working machine capable of reducing back pressure generated during slewing. The slewing-type working machine includes: a base carrier; an upper slewing body; a hydraulic motor | 11-13-2014 |
20140311816 | CONSTRUCTION MACHINE - Base end portions of a pair of engine support legs are welded to an upper frame in an exhaust duct. The pair of engine support legs extends to a notched portion of the exhaust duct from the base end portions to front end portions thereof. The front end portions project to the outside of the exhaust duct. The pair of engine support legs is connected to each other by a reinforcement plate arranged to close the notched portion of the exhaust duct. | 10-23-2014 |
20140311148 | EXHAUST APPARATUS OF CONSTRUCTION MACHINE - Provided is an exhaust apparatus provided in a construction machine with an engine and an engine room, the exhaust apparatus capable of suppressing vibration of an exhaust gas pipe and securing required strength thereof. The exhaust apparatus includes a duct provided in the engine room, a fan to suck air into the engine room and discharge through the duct the air to an outside as exhaust wind, and an exhaust gas pipe guiding exhaust gas of the engine into the duct. The exhaust gas pipe includes a duct inner portion inside the duct and a duct outer portion connected to the duct inner portion outside the duct. The duct inner portion has a plurality of discharge holes to allow the exhaust gas to be injected into the duct therethrough and discharged to the outside together with the exhaust wind. The duct inner portion is connected to the duct. | 10-23-2014 |
20140301771 | SWING BRACKET OF CONSTRUCTION MACHINE - Provided is a sufficiently reinforced swing bracket of a construction machine. The swing bracket includes a bracket body, a main connection portion connected to an upper slewing body of the construction machine, a swing-cylinder connection portion being protruded from one of right and left side parts of a lower end region of the bracket body to be connected to an end part of the swing cylinder and having a pair of supporting arms vertically opposed to each other with an interval, and a reinforcement portion for reinforcing a basal part of the swing-cylinder connection portion. The reinforcement portion has a main rib briding the supporting arms, and upper, lower, front, and rear ribs each extending from the main rib to an opposite side from the swing-cylinder connection portion. The upper and lower ribs and the front and rear ribs are continuous to form a box-shaped body. | 10-09-2014 |
20140295241 | BATTERY COOLING STRUCTURE - A protrusion | 10-02-2014 |
20140291047 | WORK MACHINE INCLUDING BATTERY - Provided is a work machine capable of protecting a battery from splashing fuel during fuel filling. The work machine includes a fuel tank having a fuel-filler portion, a battery arranged near the fuel-filler portion, and a cover member. The cover member has a cover portion which covers an upper surface of the battery and an extension portion which continuously extends from the cover portion toward the fuel-filler portion to cover a region from the battery to the fuel-filler portion. | 10-02-2014 |
20140287291 | ELECTRIC STORAGE APPARATUS AND ELECTRIC STORAGE APPARATUS UNIT - An electric storage apparatus in which a first projecting portion projecting on one side and a second projecting portion projecting on the opposite side of the one side are formed at different positions in a direction orthogonal to a direction in which the first and second projecting portions project. | 09-25-2014 |
20140255212 | CONSTRUCTION MACHINE INCLUDING HYDRAULIC PUMP - Provided is a construction machine including an engine, a hydraulic pump with a supercharger, and a hydraulic actuator, being capable of attaining both of a quick rise of engine speed and an operation of the hydraulic actuator during the rise of the engine speed. The construction machine further includes a supercharging pressure detector to detect a supercharging pressure of the supercharger and a controller to control absorption torque of the hydraulic pump, namely, pump torque. Until engine speed of the engine reaches target engine speed, the controller calculates target pump torque from a predetermined relationship between engine no-load speed and the target pump torque, corrects the target pump torque so as to make it smaller as the detected supercharging pressure is lower, and limits actual pump torque to the corrected target pump torque, until engine speed reaches target engine speed from engine speed lower than the target engine speed. | 09-11-2014 |
20140245729 | HYDRAULIC CONTROL DEVICE AND OPERATING MACHINE HAVING THE SAME - A hydraulic control device includes: a recovery oil passage; a regenerative motor that rotates an output shaft of an engine in response to a supply of the hydraulic fluid and is driven to rotate by rotation of the output shaft of the engine; a regenerative oil passage for guiding return oil from a boom cylinder to the regenerative motor without passing the return oil through the recovery oil passage; a coupling oil passage that couples the recovery oil passage and the regenerative oil passage to each other; and a regeneration-side check valve that is provided on the coupling oil passage, and allows the hydraulic fluid to flow from the recovery oil passage toward the regenerative motor, and moreover restricts the hydraulic fluid from flowing from the regenerative motor toward the recovery oil passage. | 09-04-2014 |
20140238760 | MACHINE MAIN BODY AND OPERATING MACHINE PROVIDED WITH SAME - A first panel includes an engaging section configured to engage with an engaged section so as to allow displacement of the engaged section according to swinging of a hood between a closed position and an open position and restrict the swinging of the hood in a state where an opening section is opened. The engaging section engages with the engaged section such that the engaged section is detachable by being displaced in a predetermined first direction. The machine main body further includes an auxiliary supporting section provided in a machine room and configured to restrict, by detachably supporting the engaged section detached from the engaging section, the swinging of the hood in a state where the opening section is opened. | 08-28-2014 |
20140238759 | CONSTRUCTION MACHINE WITH AIR SUCTION STRUCTURE - Provided is a construction machine including a guard panel with an air suction port and capable of ensuring a required intake opening area with suppressed disadvantages of the air suction port. The construction machine includes an engine, a cooling fan, and a heat exchanger which are accommodated in a device accommodation space in an upper slewing body, and a guard panel covering the device accommodation space. The guard panel includes a first panel with an opening edge defining an opening and a second panel that opens and closes the opening and has a peripheral portion to be supported by the opening edge with the opening closed. Respective parts of the peripheral portion and the opening edge are shifted from each other in an inward-outward direction to form an air suction port bringing the device accommodation space into communication with outside, between the second panel and the first panel. | 08-28-2014 |
20140205413 | WORK MACHINE - A work machine capable of decreasing the height of a work attachment in a folded state and suppressing the influence on the operability during demolishing operation. An arm has a surface facing downward when the attachment is in a folded posture, and the surface includes a flat arm contact surface capable of making contact with a mounting surface, on which a work attachment is mounted; and an attachment surface that extends in the direction away from the mounting surface. A work device cylinder is attached to the attachment surface so as not to make contact with the mounting surface. When the attachment is in the attachment folded posture, the arm contact surface is more parallel to a boom upper surface than a boom-side sloped surface and an arm-side sloped surface or is parallel to the boom upper surface. | 07-24-2014 |
20140205411 | WORKING MACHINE - A front bracket has a fixed part that is fixed to a bottom plate and vertical plates, and a pair of protruded parts that are protruded backward from a rear part of the fixed part so as to extend upper parts of sidewall parts. The fixed part and the protruded parts are sandwiched between opposite surfaces that are opposite to each other at front parts of the vertical plates. The protruded parts are welded to opposite surfaces of the vertical plates that are brought into contact with the protruded parts. Each welded portion between the protruded part and the opposite surface of the vertical plate is formed along an edge of the protruded part that is in contact with the opposite surface of the vertical plate. | 07-24-2014 |
20140191092 | PIPE MOUNTING STRUCTURE IN WORK MACHINE - A pipe mounting structure of a work machine that has a lightweighted structure and is able to stably mount many pipes thereon includes a structure for mounting pipes to a work machine such as a demolition machine. The structure includes at least a pair of protruding portions formed by upwardly protruding end portions of side plates of a front boom, a bridge member that is bridged between the pair of protruding portions, and connecting portions that connect the protruding portions and the end portions of the bridge member to each other, and the plurality of pipes are fixed to the bridge member. | 07-10-2014 |
20140190159 | SLEWING TYPE CONSTRUCTION MACHINE - Provided is a slewing type construction machine including an upper slewing body and a slewing speed sensor that detects a slewing speed of the upper slewing body, enabling accurate control to be achieved regardless of an error in output from the slewing speed sensor. The construction machine includes an upper slewing body, a slewing motor, a hydraulic pump, a control valve, a slewing operation device, a slewing brake, a slewing speed sensor, a slewing operation detector that detects an operation applied to the slewing operation device, and a controller. The controller stores, during a slewing operation, a slewing speed detected by the slewing speed sensor at set time intervals, actuates the slewing brake based on a neutral return operation of the slewing operation device, and resets a stored value of the slewing speed that is stored during actuation of the slewing brake, to zero. | 07-10-2014 |
20140183876 | HYBRID TYPE CONSTRUCTION MACHINE - Provided is a construction machine capable of achieving an energy conservation effect while restraining overcharge of an electrical storage device, including an engine, a slewing electric motor, an electrical storage device, a generator-motor, and an assist controller which causes the generator-motor to assist the engine to consume an electric power equal to or more than an electric power equal to a difference between the regeneration power and the maximum allowable charge amount, when a regeneration power regenerated by the slewing electric motor is equal to or more than a maximum allowable charge amount which is a maximum amount of an electric power within which the electrical storage device can be charged. | 07-03-2014 |
20140178167 | ROTATION CONTROL DEVICE AND CONSTRUCTION MACHINE INCLUDING ROTATION CONTROL DEVICE - The invention provides a rotation control device capable of reducing a loss of a power of a hydraulic pump in a backward direction operation and also provides a construction machine including the same. The controller controls a capacity of the hydraulic pump such that, in a forward direction operation in which an operating direction detected by the operation sensor and a rotating direction detected by a rotation sensor coincide with each other, the capacity of the hydraulic pump is increased in accordance with an increase in the operation amount detected by an operation sensor, on the other hand, restricts the capacity of the hydraulic pump more in a backward direction operation, in which the operating direction detected by the operation sensor and the rotating direction detected by the rotation sensor are reverse to each other, than in the forward direction operation. | 06-26-2014 |
20140166380 | CONSTRUCTION MACHINE - The present invention provides a construction machine having an engine room and capable of efficiently collecting air flowing in the engine room thereby improving exhaust efficiency. The construction machine includes an engine room, an engine, a heat exchanger provided at a first side of the engine, a fan provided at the first side and rotating to generate around the engine a flow of cooling air, and an exhaust duct having an air inlet opening and an air outlet opening and provided in the engine room so as to extend in a fan axial direction parallel with a rotation axis of the fan along the engine. The exhaust duct guides the flow of the air to collect the air flowing downstream of the fan in the fan axial direction, in a region extending in the fan axial direction, and discharge the air to an outside of the engine room. | 06-19-2014 |
20140166135 | SLEWING-TYPE WORKING MACHINE - A slewing-type working machine includes: a slewing motor which is a hydraulic motor for slewing; a variable-displacement hydraulic pump; a slewing operation device including an operation member; a control valve controlling the slewing motor based on an operation signal thereof; a pump regulator; a relief valve letting excess fluid to a tank; operation detectors detecting an operation direction and amount of the operation member; a motor rotational speed detector; and a controller controlling a discharge flow rate of the hydraulic pump. The controller obtains a deviation between a target rotational speed of the slewing motor obtained from a slewing operation amount and an actual rotational speed detected by the motor rotational speed detector, and controls the discharge flow rate to make the deviation closer to 0. | 06-19-2014 |
20140151143 | CONSTRUCTION MACHINE - A construction machine includes: an engine room provided with an intake opening and a discharge opening; a fan for sucking cooling air into the engine room through the intake opening; a duct provided in the engine room so as to communicate with the discharge opening and discharging the cooling air sucked into the engine room to an outside of the engine room through the discharge opening; and an exhaust gas pipe guiding exhaust gas discharged from the engine into the duct. A portion on a distal end side of the exhaust gas pipe is inserted into the duct, and the inserted portion of the exhaust gas pipe inserted into the duct is formed with an exhaust hole which causes the exhaust gas to be discharged in a direction different from a flowing direction of discharge wind in the duct through the exhaust hole. | 06-05-2014 |
20140145471 | SET OF MEMBERS FORMING UPPER FRAME OF CONSTRUCTION MACHINE - A set of members forming an upper frame of a construction machine includes a center section, a left side deck, and a right side deck. The left side deck has a left deck beam. The right side deck has a right deck beam. At least one of the left deck beam or the right deck beam is adjustment deck beams. The adjustment deck beam has a contacting part that is adapted to be brought into contact with and is also adapted to be welded to an external side surface of an adjustment-side longitudinal plate, a first opposing part that is adapted to be opposed to a side surface of the bottom plate and is also adapted to be welded to the side surface, and a second opposing part that is adapted to be opposed to an upper surface of the bottom plate with a height-adjustment gap therebetween. | 05-29-2014 |
20140144717 | CONSTRUCTION MACHINE - A construction machine includes: a lower propelling body; and an upper slewing body which is slewably mounted on the lower propelling body. The upper slewing body includes: an engine room provided with an intake opening and a discharge opening; a duct provided in the engine room so as to communicate with the discharge opening and an exhaust gas pipe which guides exhaust gas discharged from the engine into the duct. The discharge opening and an outlet of the duct are open downward from the engine room. A portion on a distal end side of the exhaust gas pipe is inserted into the duct. The duct and the exhaust gas pipe are configured to cause the exhaust gas to be mixed with cooled air in the duct and cause the mixture of the exhaust gas and the cooled air to be discharged downward from the discharge opening. | 05-29-2014 |
20140123640 | CONSTRUCTION MACHINE - A construction machine including: a swivel motor; a working attachment having a boom, a boom cylinder, an arm and an arm cylinder; a hydraulic actuator circuit having a first circuit including the boom cylinder and a boom control valve, a second circuit including the arm cylinder and an arm control valve, and a third circuit including the swivel motor and a swivel control valve; first to third pumps for the first to third circuits; a merge valve having a first position for merge of third pump fluid into the first circuit and connection of an unload line of the third circuit to a tank, and a second position for prohibiting the merge; and a merge selecting control section which holds the merge valve at the first position either of when only a swivel operation is performed and when a boom raising operation is performed. | 05-08-2014 |
20140093304 | PIVOTING UNIT INCLUDING PIVOTABLE BODY - Provided is a pivoting unit including a pivotable body, a horizontal pivot shaft, a support for supporting the pivotable body pivotably about the pivot shaft so as to allow the pivotable body to take a fallen posture and a raised posture in which the pivotable body is more raised than the fallen posture, and a stop member for stopping the pivotable body in the raised posture. The stop member includes a long hole vertically extending and allowing the pivot shaft to be inserted therethrough, being disposed vertically movably between upper and lower positions. The stop member, in the lower position, abuts against an abutment portion, a specific part at a lower end of the pivotable body in the raised posture, to retain the pivotable body in the raised posture, while, in the upper position, allowing the pivotable body to pivot from the raised posture toward the fallen posture. | 04-03-2014 |
20140091579 | CONSTRUCTION MACHINE - A charge and discharge control unit ( | 04-03-2014 |
20140067176 | HYBRID CONSTRUCTION MACHINE - Disclosed is a hybrid construction machine including: an engine, a generator-motor, a hydraulic pump, an electric storage device, a power control device which controls electric power between the generator-motor and the electric storage device, a temperature detector which determines a temperature of the electric storage device, an unload valve provided between a discharge port of the hydraulic pump and a tank, an unload-valve control device, and a relief valve. The power control device controls an electric power to be supplied from the electric storage device to the generator-motor, under abnormal circumstances where the temperature of the electric storage device is low, to a power obtained by adding an additional discharge power to a power to be supplied under normal circumstances. The unload-valve control device closes the unload valve, under abnormal circumstances. The relief valve controls the discharge pressure of the hydraulic pump to the set pressure, under abnormal circumstances. | 03-06-2014 |
20140062096 | HYBRID CONSTRUCTION MACHINE - Provided is a hybrid construction machine including: a hydraulic actuator; a hydraulic pump which discharges hydraulic fluid for driving the hydraulic actuator; a generator-motor which performs an electric generator action of generating electric power and an electric motor action of generating motive power; an engine connected to the hydraulic pump and the motor-generator; an electrical storage device; and a controller which causes the generator-motor to perform the electric generator action and charge the electrical storage device and causes the generator-motor to perform the electric motor action by electric power discharged from the electrical storage device to assist the engine. The controller causes the generator-motor to start the electric generator action when an engine output becomes equal to or greater than a predetermined engine lower limit output, and controls the electric generator action to keep the engine output no lower than the engine lower limit output. | 03-06-2014 |
20140044514 | SLEWING TYPE WORKING MACHINE - A slewing-type working machine capable of reducing back pressure generated during slewing. The slewing-type working machine includes: a base carrier; an upper slewing body; a hydraulic motor including first and second ports and slewing the upper slewing body; a hydraulic pump, a slewing operation device including an operating member; a control valve controlling the hydraulic motor based on the operation signal of the slewing operation device; first and second pipe-lines connecting the first and second ports of the hydraulic motor to the control valve; a communication switching device capable of switching communication and cutting of between both pipe-lines and the tank; and a switching command section operating the communication switching devices, when the upper slewing body is slewed, to bring only a pipe-line, which corresponds to a discharge-side pipe-line of the hydraulic motor, of the pipe-lines into communication with the tank, while bypassing the control valve. | 02-13-2014 |
20140026552 | HYBRID CONSTRUCTION MACHINE - The axial lengths of coupling portions of a flywheel, a rotor shaft, and a pump shaft are reduced to reduce the axial length of an entire power unit. A crankshaft and a flywheel are directly coupled to each other and the flywheel and a rotor shaft are directly coupled to each other. A coupling is directly coupled to an end face of the rotor shaft on the opposite side to the flywheel. A pump shaft is connected to the coupling. Coupling surfaces of the flywheel and the rotor shaft and coupling surfaces the rotor shaft and the coupling are arranged within a width range of a coil. | 01-30-2014 |
20140026551 | HYBRID CONSTRUCTION MACHINE - A hybrid construction machine that enables to efficiently cool a generator motor, while suppressing an increase in the entire length of a power unit. A motor housing is provided with a bulging portion which is configured to axially bulge from the inner periphery of a motor side connection surface toward an engine over the entire circumference thereof around an axis, and to engage with the inside of an engine housing; and a coolant passage which is configured to flow a coolant for cooling a stator therethrough. The inner peripheral surface of the motor housing including the inner peripheral surface of the bulging portion is configured to come into plane contact with the outer peripheral surface of the stator. The coolant passage is disposed at a position axially displaced from the motor side connection surface. | 01-30-2014 |
20140013753 | SLEWING TYPE WORKING MACHINE - A slewing-type working machine includes: a hydraulic motor having first and second ports and driving an upper slewing body to slew it; a hydraulic pump; a slewing operating device including an operating member; a control valve controlling the hydraulic motor based on an operation signal of the slewing operating device; first and second pipe-lines connecting the first and second ports of the hydraulic motor to the control valve; communication switching devices switchable between communication and cutoff between both pipe-lines and a tank; a slewing electric motor; an electric storage device; and a controller. During a slewing operation, the controller brings the communication switching devices into a communicated state and performs regenerative control by issuing a command on a regeneration amount corresponding to a reduction in back pressure by the communication switching devices in the communicated state to the slewing electric motor. | 01-16-2014 |
20140013752 | SLEWING TYPE WORKING MACHINE - A slewing-type working machine includes: a hydraulic motor for slewing an upper slewing body; a hydraulic pump; a slewing operation device including an operation member; a control valve controlling the hydraulic motor based on an operation signal of the slewing operation device; first and second pipe-lines connecting first and second ports of the hydraulic motor to the control valve; communication switching devices switching communication and cutoff between both pipe-lines and a tank; an electric motor; an electric storage device; and a controller, which communicates an outlet-side pipe-line to the tank during slewing, makes a brake based on a regenerative action by the electric motor and the electric storage device and causes the electric storage device to store regenerative power, upon deceleration operation. Upon failure occurrence, the controller brings the communication switching devices to a communication-cutoff state and stops the regenerative action to secure slewing. | 01-16-2014 |
20140007565 | SLEWING TYPE WORKING MACHINE - A slewing-type working machine, including a base, an upper slewing body, a hydraulic motor slewing the upper slewing body, a hydraulic pump, a slewing operation device, a control valve controlling the hydraulic motor, pipe-lines connecting the hydraulic motor to the control valve, a hydraulic pressure source, communication valves switching communication and cutoff between the pipe-lines and a tank by pilot pressure, an electric motor, an electric storage device, communication selector valves on inlet sides of the communication valves, a switching control valve on an inlet side of the communication selector valves, and a controller. During slewing deceleration, the controller signals to switch the switching control valve to a connecting position and switch the communication selector valves to a pilot pressure supply position. In a slewing stopped state, the controller signals to switch the communication selector valves to a cutoff position and switch the communication valves to a communication cutoff position. | 01-09-2014 |
20140000975 | HYBRID CONSTRUCTION MACHINE | 01-02-2014 |
20140000252 | POWER SOURCE APPARATUS AND HYBRID CONSTRUCTION MACHINE EQUIPPED WITH SAME | 01-02-2014 |
20130333963 | UPPER SLEWING BODY AND HYBRID CONSTRUCTION MACHINE INCLUDING SAME - To ensure that an electric power cable and a signal cable are laid easily over short distances while suppressing an effect of electromagnetic wave noise on the signal cable, an electric power cable is laid along a route that passes through only a right outside space in a lower position than an upper end of a right vertical plate, while a signal cable is laid along a bypass route that extends from a generator motor in a lower position than the upper end of the right vertical plate, passes through a rear portion cable insertion hole into an intermediate space between the right vertical plate and a left vertical plate, and returns to the right outside space from the intermediate space through a front portion cable insertion hole. | 12-19-2013 |
20130330160 | CONSTRUCTION MACHINE WITH WORKING ATTACHMENT - A construction machine, including: a hydraulic pump; a working attachment including a boom, a boom cylinder, and another fluid-supplied cylinder closer to a leading end than the boom cylinder; first and second operation devices for the boom cylinder and the fluid-supplied cylinder; first and second control valves; a flow-rate-limiting section; and an anti-cavitation circuit. The fluid-supplied cylinder receives fluid-supply from the hydraulic pump, together with the boom cylinder. A reaction force upon work accompanying extension of the fluid-supplied cylinder increases the rod-side pressure of the boom cylinder and reduces a head-side pressure. The flow-rate-limiting section limits a supply flow rate to a head-side fluid chamber of the boom cylinder only during a boom-raising-operation with the rod-side pressure higher than the head-side pressure in the boom cylinder. The anti-cavitation circuit replenishes hydraulic fluid from a tank to the head-side fluid chamber. | 12-12-2013 |
20130318971 | POWER SOURCE APPARATUS AND HYBRID CONSTRUCTION MACHINE EQUIPPED WITH SAME - A controller carries out horsepower control to determine a flow rate of a hydraulic pump based on first characteristics and second characteristics, which each define a maximum input setting of the hydraulic pump by a discharge pressure of the hydraulic pump and a flow rate of the hydraulic pump, and based on the discharge pressure. When the discharge pressure is less than a set pressure and when a state where the discharge pressure is equal to or greater than the set pressure has not continued for a set time period, then the controller determines the flow rate based on the first characteristics, and when the state where the discharge pressure is equal to or greater than the set pressure has continued for the set time period, then the controller determines the flow rate based on the second characteristics. | 12-05-2013 |
20130307443 | SLEWING-TYPE WORKING MACHINE - A slewing-type working machine includes: an electric storage device capable of being charged with regenerative electric power for regenerating slewing energy of an upper slewing body while functioning as an electric power source for an electric slewing motor; an electric storage device and electric storage device controller detecting whether the electric storage device is under a normal condition with sufficient capacity to regenerate the slewing energy or under an abnormal condition without sufficient capacity; and a controller controlling a velocity of the electric slewing motor based on a result of detection by the electric storage device and electric storage device controller, wherein the controller performs a velocity limiting control for limiting a maximum velocity of the electric slewing motor when the electric storage device is under the abnormal condition. | 11-21-2013 |
20130306388 | CONSTRUCTION MACHINE - A cab includes a floor plate that constitutes a floor surface of the cab and a frame-shaped lower frame which extends along a peripheral edge of the floor plate and which is fixed onto the floor plate. A swivel joint is arranged below the floor plate such that a part of the swivel joint overlaps with a peripheral edge of the lower frame in plan view. A floor-side projecting portion that projects upward is provided on the peripheral edge of the floor plate and a floor-side housing portion that houses the swivel joint is provided below the floor-side projecting portion. A frame-side projecting portion that projects upward is provided on the lower frame, and a frame-side housing portion that houses the floor-side projecting portion is provided below the frame-side projecting portion. | 11-21-2013 |
20130299256 | HYBRID CONSTRUCTION MACHINE - A hybrid construction machine includes: an electric storage device temperature adjustment circuit; an engine cooling circuit including a first coolant and switchable between a state the first coolant after cooling the engine is introduced into the electric storage device temperature adjustment circuit and a state stopping introduction of the first coolant into the electric storage device temperature adjustment circuit; an equipment cooling circuit that cools, with a second coolant, equipment needing cooling, and switchable between a state the second coolant is introduced into the electric storage device temperature adjustment circuit and a state stopping introduction of the second coolant into the electric storage device temperature adjustment circuit; and a controller controlling the engine cooling circuit, the equipment cooling circuit, and a lead-out switching valve such that the first coolant or second coolant selectively flows, according to whether the electric storage device needs to be warmed or cooled. | 11-14-2013 |
20130257095 | WORKING MACHINE - Disclosed is a working machine which comprises: a lower propelling body; a support base; an equipment installation area; a pipe extending from the equipment installation area; a guard which covers the equipment installation area and has an opening for leading out the pipe therethrough; and a clamp configured to support the pipe and having a shape capable of closing up the opening. The clamp includes: at least one support element for supporting the pipe; a guide portion for guiding the at least one support element; and a pair of clamping members for clamping the at least one support element. One of the pair of clamping members has a shield plate portion having a shape capable of closing up a remaining region of the opening other than a region closed up by the at least one support element arranged. | 10-03-2013 |
20130255422 | DRIVE APPARATUS AND CONSTRUCTION MACHINE PROVIDED WITH SAME - A drive apparatus which is compact in a height direction and a diametrical direction and with which a sufficient air breather function can be obtained, and a construction machine including the drive apparatus. The drive apparatus includes an electric motor and a speed reducer. An interior of a motor housing communicates with a speed reducer chamber such that a flow of air between the speed reducer chamber and the interior of the motor housing is permitted while limiting inflow of lubricating oil into the interior of the motor housing from the speed reducer chamber. An air breather passage and an air breather pipe for opening the interior of the motor housing to the atmosphere are provided in the motor housing. | 10-03-2013 |
20130255416 | DRIVE APPARATUS AND CONSTRUCTION MACHINE PROVIDED WITH SAME - A dry brake provided between a motor and a speed reducer and including a brake mechanism for applying a brake to a motor shaft and a brake housing surrounding a brake chamber housing the brake mechanism. The brake housing includes a partition wall that partitions a speed reducer chamber from the brake chamber when penetrated by the motor shaft. The partition wall includes a shaft sealing mechanism that limits a flow of a lubricating oil between the partition wall and the motor shaft, and an air passage that allows air to flow between the speed reducer chamber and the brake chamber while limiting an inflow of the lubricating oil into the brake chamber from the speed reducer chamber. An air breather for opening the interior of the brake chamber to the atmosphere is formed in the brake. | 10-03-2013 |
20130231210 | DRIVE APPARATUS AND CONSTRUCTION MACHINE PROVIDED WITH SAME - A drive apparatus for a construction machine includes: a motor having a motor shaft; a speed reducer unit having a speed reducer output shaft and a casing and reducing speed of rotation force of the motor, and transmitting the force to an upper slewing body; and a cooler formed with a coolant path through which liquid or gas for cooling lubricating oil inside the casing passes as a cooling medium, wherein the motor and the speed reducer unit are provided in a row in an apparatus-axis direction such that the motor shaft and the speed reducer output shaft are arranged along the same line, and the cooler is provided in a row with the speed reducer unit in the apparatus-axis direction in a state where at least a part of the cooler is immersed in the lubricating oil, so as to enable heat exchange with the lubricating oil. | 09-05-2013 |
20130228388 | CONSTRUCTION MACHINE - A construction machine includes an engine disposed in an engine room, a heat exchanger disposed in the engine room, an air intake passage configured to provide a communication between the interior and the exterior of the engine room, and a cooling fan disposed in the engine room. The cooling fan is configured to draw external air into the engine room through the air intake passage by rotation thereof, and to flow the external air for allowing the external air to pass the heat exchanger. The heat exchanger has an air intake surface formed on a side portion thereof. The air intake surface is a surface configured to receive airflow to be drawn into the heat exchanger. The air intake passage is configured to flow the external air drawn to the air intake passage along a route passing a position over the heat exchanger and reaching the air intake surface. | 09-05-2013 |
20130213726 | CONSTRUCTION MACHINE - A construction machine including: a frame; an engine on a frame; a hydraulic pump; a guard panel disposed on the frame to surround an engine room and including a maintenance port for the hydraulic pump; an exhaust-gas-purification device inside the engine room; and a support member to support an exhaust-gas-aftertreatment device including the exhaust-gas-purification device just above the hydraulic pump. The support member includes a first portion to support the exhaust-gas-purification device and a second portion to support a NOx-reducing catalyst at a position closer to the maintenance port than the exhaust-gas-purification device. The catalyst supporting portion supports the NOx-reducing catalyst at a position higher than the exhaust-gas-purification device so as to form, over the hydraulic pump, a maintenance space having an upper end higher than an upper end of a space formed under the first portion and the exhaust-gas-purification device. | 08-22-2013 |
20130174526 | CONSTRUCTION MACHINE - In a construction machine, an equipment room cover is formed with a maintenance hole, which has such a shape as to allow an air filter to pass, at a position on a rear side of the air filter mounted to a filter mounting portion of an air intake duct. A locking device of the filter mounting portion has a movable member movable between a locking position and a lock-releasing position. In the locking position, the movable member contacts with a rear surface of the air filter in a state that a front surface of the air filter is contacted with a contact member so that the air filter is sandwiched and held between the movable member and the contact member. In the lock-releasing position, the movable member is moved away from the rear surface of the air filter for allowing movement of the air filter toward the rear side. | 07-11-2013 |
20130167522 | HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE - A circuit for driving a hydraulic cylinder of a construction machine includes: a hydraulic pump; a tank; a control valve; a bottom side line; a rod side line; a quick return circuit having a branch line branched off from the bottom side line and led to the tank and a quick return valve which allows hydraulic fluid to be flowed through the branch line only when the control valve is switched to a contraction driving position; and a recycling circuit which supplies a part of return fluid discharged from a bottom side fluid chamber to a rod side fluid chamber of the hydraulic cylinder. The recycling circuit allows the hydraulic fluid to be flowed only from the bottom side fluid chamber into the rod side fluid chamber of the hydraulic cylinder only when the hydraulic cylinder is switched to the contraction driving position. | 07-04-2013 |
20130164109 | CONSTRUCTION MACHINE - A construction machine includes: a work device; an operation device which receives a manipulation; a hydraulic unit including a hydraulic motor; an electric unit including an electric motor and an energy storage unit; a control device which makes the electric power of the energy storage unit assist the hydraulic unit upon the manipulation for the drive side, and makes the electric motor generate regenerative electric power unit upon the manipulation for the regeneration side; and a power-discharge command unit which issues a discharge command for the energy storage unit. Upon receiving the discharge command, the control device operates the electric motor to lower a voltage of the energy storage unit upon the manipulation for the drive side, and makes only the hydraulic unit decelerate or stop the work device upon the manipulation for the regeneration side. | 06-27-2013 |
20130151087 | HYBRID CONSTRUCTION MACHINE - The present charging rate of a battery is accurately calculated. The calculation mode of the present charging rate is switched to a current integration mode during operation of a generator motor while the mode is switched to a voltage reference mode at a predetermined switchover timing. In the current integration mode, charge current of the battery is integrated and added to the initial charging rate and an integrated discharge current value is subtracted from the initial charging rate of the battery to calculate the present charging rate. In the voltage reference mode, the present charging rate is calculated based on a predetermined map and detected voltage of the battery. After calculation of the present charging rate according to the voltage reference mode, the calculation mode is restored from the voltage reference mode to the current integration mode and the suspension of operating the generator motor is cancelled. | 06-13-2013 |
20130145880 | DRIVE DEVICE FOR CONSTRUCTION MACHINE - A drive device for a construction machine includes a speed reduction unit reducing speed of rotational force output from a motor, the speed reduction unit has a gear mechanism provided in a casing and reducing the speed of the rotational force output from the motor, and an oil receiver arranged above the gear mechanism in the casing, the oil receiver forms a main storage space for storing the lubricant oil, and is arranged in the casing such that an oil passage for guiding a rising lubricant oil to the main storage space is formed between an outer surface of the oil receiver and an inner wall surface of the casing, the oil receiver is provided with an oil drain opening, the oil drain opening designed to gradually discharge the lubricant oil stored in the main storage space toward the gear mechanism through the oil drain opening. | 06-13-2013 |
20130129459 | CONSTRUCTION MACHINE HAVING HYDRAULIC CIRCUIT - A construction machine includes a hydraulic actuator circuit including: a first circuit connected to one of travel motors and a boom cylinder; a second circuit connected to the other travel motor and arm cylinder; and a third circuit connected to a slewing motor; control valves for hydraulic actuators; and a merging valve having a first position for unloading hydraulic fluid discharged from a third pump upon no operation except for two travel motors; a second position for merging the hydraulic fluid into the first and second circuits upon a simultaneous operation of the travel motors and an operation of at least one remaining hydraulic actuator except for a boom raising operation; and a third position for merging the hydraulic fluid into the first circuit while blocking it from the second circuit upon the boom raising operation. | 05-23-2013 |
20130115035 | CONSTRUCTION MACHINE WITH HYDRAULIC CIRCUIT - Provided is a construction machine including a first circuit with a boom cylinder, a second circuit with an arm cylinder and a third circuit with a slewing motor, first to third pumps discharging respective first to third pump fluids, a first flow combining valve having a first combining position for the third and first pump fluids and a first combination limiting position, a second flow combining valve having a second combining position for the third and second pump fluids and a first combination and a second combination limiting position, and a flow combination switching control section which switches the flow combining valves to their respective combination limiting positions during an arm attracting operation and switches the combining valves to their respective combination limiting positions during a single slewing operation or during a boom raising operation with no arm operation. | 05-09-2013 |
20130106238 | MOTOR AND MOTOR MANUFACTURING METHOD | 05-02-2013 |
20130094895 | CONSTRUCTION MACHINE WITH UPPER SLEWING BODY - Provided is a construction machine which comprises an upper slewing body including: a frame bottom plate formed with an downward opening; an undercover detachably attached to the frame bottom plate to close up the opening; and a connection member for connecting the undercover to the frame bottom plate. The undercover includes a cover-forming member made of a single plate fabricated to have a base portion extending along a lower surface of the frame bottom plate and a bulging portion bulging upwardly from the base portion to be inserted into the opening. The base portion has a contact area in an outer edge region thereof to make contact with the lower surface of the frame bottom plate from the lower side thereof. The connection member connects the bulging portion to a region of the frame bottom plate, the region located above the lower surface of the frame bottom plate. | 04-18-2013 |
20130093214 | OPERATING MACHINE - An operating machine comprises a machine body mounted on a lower propelling body. The machine body comprises an upper frame, and a line member mutually connecting a plurality of devices installed to the upper frame. The upper frame has a bottom plate, a pair of longitudinal plates each provided to stand on the bottom plate and extend in a front-rear direction, while being disposed in spaced-apart relation to each other in a right-left direction, and a transverse plate provided to stand on the bottom plate and extend in the right-left direction, while being joined to each of the longitudinal plates. A specific plate consisting of at least one of the pair of longitudinal plates and the transverse plate has an upper edge on which a pair of protrusions are provided in opposed relation to each other, and the line member is set to pass through between the pair of protrusions. | 04-18-2013 |
20130093213 | UPPER SLEWING BODY AND OPERATING MACHINE HAVING THE SAME - An upper frame has a bottom plate, a pair of vertical plates that are provided to stand on the bottom plate so as to face each other in a right-left direction, and a left side frame configuring a part of a rim part of the upper frame. An attachment is supported on a support parts provided in front of the slewing bearing in vertical plates. A left vertical plate has a rear curved part, behind the support part, which is curved forming a convex shape directed toward an opposite side of a right vertical plate in a planar view. The upper slewing body further has a first coupling member for coupling the left side frame and the left vertical plate to each other so as to prevent the left vertical plate from being deformed in a direction in which the rear curved part approaches the right vertical plate. | 04-18-2013 |
20130082062 | TANK FOR CONSTRUCTION MACHINE - Provided is a tank comprising a tank body and first and second reinforcement members. The tank body includes a first wall portion, a first opposing wall portion opposing to the first wall portion in a first direction, a second wall, and a second opposing wall portion opposing to the second wall in a second direction. The first reinforcement member is disposed across the first wall portion and the first opposing wall portion, the first reinforcement member having opposite ends welded to the first wall portion and the first opposing wall portion, respectively. The second reinforcement member is disposed across the second wall and the second opposing wall portion while spatially crossing the first reinforcement member, the second reinforcement member having opposite ends welded to the second wall and the second opposing wall portion, respectively. | 04-04-2013 |
20130081887 | CONSTRUCTION MACHINE - A construction machine includes an exhaust duct for discharging a lower airflow to the exterior of an engine room. An air inlet for introducing air into the exhaust duct is provided in an upper portion of the exhaust duct, and an air outlet for discharging the air from the exhaust duct is provided in a lower portion of the exhaust duct. An air passage is formed in the interior of the exhaust duct between the air inlet and the air outlet. The exhaust duct is disposed on an exhaust side of the engine room such that the air introduced into the air passage in the exhaust duct through the air inlet is discharged below the engine room from the air outlet through a discharge port, and such that a hydraulic pump provided on the exhaust side of the engine room is shielded from the discharge port by the exhaust duct. | 04-04-2013 |
20130067901 | HYDRAULIC TUBING SUPPORT STRUCTURE AND OPERATING MACHINE PROVIDED THEREWITH - A hydraulic tubing support that reduces noise transmitted to an operator due to pulsation of hydraulic oil in a junction tube. The hydraulic tubing support structure includes a pair of left and right remote control valves for generating pilot pressures for the plurality of hydraulic actuators in response to an input operation performed on each operating lever, pump-side tubes and tank-side tubes respectively extending from the respective remote control valves, a junction tube for allowing communication of the tubes guided to below a floor plate through a through hole and communication of the tubes guided to below the floor plate through a through hole, and a middle reinforcement beam extending in a right-and-left direction and fixed to the lower surface of the floor plate. The junction tube is fixed to the middle reinforcement beam in a non-contact state with the floor plate. | 03-21-2013 |
20130026795 | METHOD AND APPARATUS FOR MOUNTING DEVICE IN CONSTRUCTION MACHINE - Provided is a method for mounting a device on a frame in a construction machine. The method includes forming plate holes in a beam member at respective mount-member-provision positions on the beam member; mounting a plate supporter on a back surface of the beam member at each of the mount-member-provision positions so as to border the plate hole at a lower side thereof; installing the beam member on the frame; putting the mount plate into the plate hole from above so as to make the mount plate be supported by the plate supporter and fixing the plate supporter in the plate hole after adjusting the position of the mount plate horizontally and vertically within the plate hole; and mounting the mount members to the mount plates fixed in the plate holes respectively and mounting the device on the beam member via the mount members. | 01-31-2013 |
20130009423 | CONSTRUCTION MACHINE PROVIDED WITH CAB - Provided is a construction machine. The construction machine is provided with a lower propelling body and an upper slewing body. The upper slewing body has an upper frame, a cab disposed on a left portion or a right portion of the upper frame, and cab mounts. The cab mounts are disposed at lateral ends on each of front and rear portions of the cab respectively, including, on at least one of the front and rear portions, first and second outer-side cab mounts disposed at the outer side of lateral ends of the cab. The first and second outer-side cab mounts are juxtaposed with a small enough distance to receive a rollover load concurrently when the construction machine rolls over toward a side of the cab. | 01-10-2013 |
20120247094 | HYDRAULIC PUMP CONTROL DEVICE FOR CONSTRUCTION MACHINE - A pump control device for a construction machine includes a pump regulator, a pump pressure detector, a travelling operation detector, a working operation detector, and a controller instructing the pump flow rate depending on the pump pressure to the pump regulator. The controller stores first and second P-Q characteristics as a horsepower characteristic and instructs the pump flow rate to the pump regulator, based on the first P-Q characteristic when a travelling operation is detected, and based on the second P-Q characteristic when a working operation is detected. The second P-Q characteristic is equal to the first P-Q characteristic in a low-pressure region while is one giving a low characteristic relatively to the first P-Q characteristic so as to increase a horsepower difference as the pump pressure increases, in intermediate-pressure and high-pressure regions. | 10-04-2012 |
20120234513 | CONSTRUCTION MACHINE PROVIDED WITH HEAT EXCHANGER - Provided is a construction machine comprising: a heat exchanger with a core surface in an engine room; a top wall covering an air inlet chamber in the engine room and having a first air inlet; a duct including a main wall guiding air in the air inlet chamber to draw it through the core surface and a front wall facing the core surface and having a second air inlet; a cooling fan sucking external air onto the core surface through the second air inlet; and an air cleaner extending horizontally and orthogonally to an air guiding direction by the main wall. At least a part of the air cleaner exists in a vertical region where the second air inlet is formed. The air cleaner directs, toward the second air inlet, an air flow farthest from the duct, out of the air flow drawn downward through the first air inlet. | 09-20-2012 |
20120227943 | COOLING APPARATUS FOR CONSTRUCTION MACHINE - The present invention is directed to a cooling apparatus comprising a plural number of (e.g., first to third) heat exchangers arranged in widthwise side-by-side relation to each other, and designed to optimize an air-volume distribution of cooling air passing through cores of the heat exchangers to thereby improve cooling efficiency. Each of the cores | 09-13-2012 |
20120224943 | CONSTRUCTION MACHINE HAVING PLATFORM FOR MAINTENANCE WORK - A construction machine including: a lower propelling body; an upper slewing body having a rear region with an engine room; a slewing device for slewing the upper slewing body; and a platform cover. The slewing device includes a slewing electric motor having an electric-motor output shaft, and a speed reducer having a speed-reducer output shaft rotated more slowly than the electric-motor output shaft, the speed reducer installed forward of the engine room such that the speed-reducer output shaft points downward, the slewing electric motor disposed just above the speed reducer. The platform cover is provided on a top of the slewing electric motor, having an upper surface serving as a platform for maintenance of equipment in the engine room. The platform cover is lower than the engine cover and adjacent to a front side of the engine room. | 09-06-2012 |
20120222473 | FUEL PROPERTY DETECTION DEVICE FOR CONSTRUCTION MACHINE AND CONSTRUCTION MACHINE PROVIDED THEREWITH - A device detecting a property of fuel in a course of a pipeline, while improving accuracy and stability of the fuel property detection. The device includes a sub-tank provided in the course of a fuel pipeline connecting a fuel tank and an engine, and a sensor capable of detecting the property of fuel inside the sub-tank. The sub-tank includes a fuel inlet for introducing therethrough fuel from the fuel tank, and a fuel outlet for sending out therethrough the fuel toward the engine. | 09-06-2012 |
20120187721 | CONSTRUCTION MACHINE - A construction machine has a locking mechanism for locking a lower end of a front part of a guard member onto a bracket while allowing a cab to be moved with elastic deformation of an anti-vibration mount. The locking mechanism has a shaft body across the bracket and the guard member vertically movably with the guard member. The shaft body has a stopper to be engaged to an upper frame side to restrict a moving amount of the shaft body to a stroke for shock absorbing. The bracket has a bolt insertion hole for a bolt to fix the bracket and a shaft body insertion hole for the shaft body. The bolt insertion hole is a lateral oblong hole extending in a direction inclined, with respect to the horizontal direction, toward a direction orthogonal to a load acting direction in the lateral rollover. | 07-26-2012 |
20120174566 | CONSTRUCTION MACHINE - A construction machine including an engine, a fuel tank, and a liquid reductant tank. The construction machine further includes a tank cover, and the fuel tank has an upper surface including a high-position surface and a low-position surface located at a lower position than the high-position surface and adjacent to the high-position surface through a step. The tank cover is provided over the low-position surface and at a height position approximately equal to that of the high-position surface to define a liquid reductant tank installation space in cooperation with the low-position surface. The liquid reductant tank has a replenishment port, installed in the liquid reductant tank installation space so that the replenishment port is close to a lower surface of the tank cover. | 07-12-2012 |
20120112495 | UPPER FRAME FOR CONSTRUCTION MACHINE - In a side deck of a construction machine, includes a cross allowing member which has a shape avoiding a reinforcement member so as to allow the reinforcement member to extend across a mount holding member longitudinally of the side deck. A front end of the reinforcement member is directly joined to the front beam while the reinforcement member extends longitudinally across the cross allowing member. | 05-10-2012 |
20120104798 | OPERATION UNIT FOR CONSTRUCTION MACHINE AND HOSE COVER TO BE PROVIDED THEREIN - An operation unit for a construction machine includes a floor, an operation seat and a console box. A pilot valve is provided within the console box, a plurality of hoses are connected to the pilot valve and arranged at least from the pilot valve to the floor while bundled together, and a hose cover covers a plurality of over-floor portions of the respective hoses between the pilot valve and the floor. | 05-03-2012 |
20120097468 | CONSTRUCTION MACHINE - A construction machine is provided with a clamp receiver | 04-26-2012 |
20120061995 | DEVICE REMOVING/RE-INSERTING STRUCTURE, AND DEVICE REMOVING/RE-INSERTING METHOD FOR CONSTRUCTION MACHINE - A demountable pillar | 03-15-2012 |
20120061994 | PILLAR STRUCTURE FOR CONSTRUCTION MACHINE - In a structure where a floor plate ( | 03-15-2012 |
20120056412 | WORKING MACHINE - A working machine is provided with a pressing mechanism | 03-08-2012 |
20120001454 | DOOR FOR CABIN IN CONSTRUCTION MACHINE - The invention provides a door for a cabin in a construction machine, the door including a pulling handle portion to be pulled in a closing direction of the door from the inside of the cabin and preventing the pulling handle portion from misuse as a riding handle, the riding handle including a first gripped portion extending in a first extending direction to be gripped by an operator when the operator rides in the cabin. The door includes a cabin frame having an entrance and a riding handle projecting from an fringe portion fringing the entrance of the cabin frame in a specific direction. The door has a door frame vertically extending and a door glass to be attached to the door frame. The door frame has a pulling handle portion, which is attached to the cabin frame pivotally around a vertical pivot axis so as to allow the door to open and close the entrance of the cabin and projects in a direction having a component of a direction away from the door glass to be gripped for operating the door in the closing direction from the inside of the cabin. The pulling handle portion is disposed so as to be aligned with the riding handle in front and rear directions outside the cabin when the door is fully opened. the pulling handle portion satisfies at least one of the following directions: a first condition that the height position of the second gripped portion is offset upward from the height position of the riding handle; and a second condition that the second gripped portion of the pulling handle portion extends in a second extending direction different from the first extending direction. | 01-05-2012 |
20110304169 | ELECTRICAL COMPONENT HOUSING DEVICE AND CONSTRUCTION MACHINE INCORPORATED WITH THE SAME - An electrical component housing device is provided with a housing box | 12-15-2011 |
20110291443 | FRONT WINDOW FORMED IN CABIN OF CONSTRUCTION MACHINE - Provided is a front window formed in a cabin including an upper window formed in a front face of the cabin and having a window frame with an underside portion, and a lower window disposed below the upper window so as to contact the upper window, while being capable of inhibiting condensed water from building up on the underside portion and rusting the underside portion. The upper window is provided with a glass plate having a periphery to be attached to an outer face of the window frame, defining a clearance between the underside portion and the glass plate to let out the condensed water generated on an inner face of the glass plate downwardly from the underside portion. | 12-01-2011 |
20110254513 | HYBRID WORKING MACHINE HAVING BATTERY PROTECTING FUNCTION - Provided is a hybrid working machine capable of performing battery charging control both for a working period and a standby period. The hybrid working machine includes a hydraulic actuator, an engine, a hydraulic pump driven by the engine to supply hydraulic fluid to the hydraulic actuator, a battery, a generator motor connected to the engine to serve as a generator by an output power of the engine to charge the battery and serve as a motor for assisting the engine by supply of an electric power from the battery, a battery monitor detecting a battery SOC, a controller which controls a charging power of the battery depending on the battery SOC, and a working state detector detecting a working state as information for discriminating between a working period during which the hydraulic actuator is actuated and a standby period during which the hydraulic actuator is not actuated. The controller limits the charging power in the standby period in comparison with in the working period. | 10-20-2011 |
20110243700 | WORKING MACHINE WITH EQUIPMENT ROOM - A working machine comprising a frame, a working implement supported at a front end of the frame, a cover member, a latch member, a selector valve and a support bracket. The cover member has a cover-member body covering a side equipment room and having an opening, a lid member to open and close the opening, a lockable member attached to an inner side of the cover-member body near the opening, and a hinge portion interconnecting the frame and a rear end of the cover-member body and supporting the cover-member body. The latch member is disposed near the opening and inside the side equipment room to hold the cover member closed in cooperation with the lockable member. The support bracket extends from the side equipment room toward the opening and supports the latch member and the selector valve at the side of the frame. The support bracket has a selector valve-retaining portion supporting the selector valve and a latch member-retaining portion retaining the latch member at a position closer to the opening and higher than the selector valve. | 10-06-2011 |
20110227512 | SLEWING CONTROL DEVICE AND WORKING MACHINE INCORPORATED WITH THE SAME - There is provided a slewing control device that enables to detect breakdown of a driving system of a mechanical brake, and generate a torque for holding a slewing body in a stopped state to thereby prevent movement of the slewing body when an anomaly has occurred. In a working machine for driving a slewing body by an electric motor | 09-22-2011 |
20110226348 | CONSTRUCTION MACHINE - Left and right first and second vertical plates | 09-22-2011 |
20110225938 | ENGINE AIR INTAKE DEVICE AND CONSTRUCTION MACHINE INCORPORATED WITH THE SAME - Two air cleaners | 09-22-2011 |
20110214931 | CONSTRUCTION MACHINE PROVIDED WITH ENGINE ROOM - Disclosed is a construction machine comprising an engine room having first and second exhaust ports, preventing deterioration of air flows due to collision of exhaust airs through the first and the second exhaust ports, and reducing noise transmission on lateral sides of the construction machine. The construction machine comprises an engine guard surrounding an engine room; an engine, a heat exchanger, and a cooling fan, which are installed in the engine room; and an exhaust air guide. The engine guard is formed with exhaust ports including the first and second exhaust ports. The first is opened in parallel to an axial direction of an engine output shaft. The second is formed in proximity to the first exhaust port downstream of the first exhaust port with respect to a direction parallel to the axial direction of the engine output shaft and opened upward below the first exhaust port. The exhaust air guide has a shape to change a flow direction of the air discharged through the first exhaust port in parallel to the axial direction of the engine output shaft into an upward direction at a position upstream of the second exhaust port. | 09-08-2011 |
20110188982 | WORKING MACHINE - A working machine includes a base machine and a working attachment. The working attachment has a base-end boom, a lead-end boom, and an arm. The working machine is collapsible into a triple-folded state, with the base-end boom being located on the upper side and the arm being located on the lower side with respect to the lead-end boom, as a posture of the working machine for transport. The working machine further includes a lead-end boom cylinder for moving the lead-end boom, and an arm cylinder for moving the arm. The lead-end boom has a first lead-end boom cylinder attachment portion for mounting the lead-end boom cylinder, and a first arm cylinder attachment portion for mounting the arm cylinder. The first lead-end boom cylinder attachment portion is disposed at a position different from the first arm cylinder attachment portion in a widthwise direction of the working attachment, and lower than the first arm cylinder attachment portion in the transport posture. | 08-04-2011 |
20110162908 | CONSTRUCTION MACHINE WITH CAB NOISE REDUCTION DEVICE - A construction machine capable of effectively reducing noise which would intrude into a cab, without deterioration in ride quality, comfort and air-conditioning efficiency in the cab is provided. The construction machine includes a lower propelling body, an upper slewing body including an upper frame, a cab including a floor plate and installed on the upper frame, and a cab noise reduction device. The cab noise reduction device includes: the floor plate; an under-cab member including a cab deck supporting the cab and provided under the cab to define a closed-form under-cab space whose periphery is substantially closed, in cooperation with the floor plate; and a resonator reducing noise in the under-cab space by a resonance effect. | 07-07-2011 |
20110073402 | HYBRID CONSTRUCTION MACHINE - A hybrid construction machine includes an engine, a generator motor, and a hydraulic pump. They constitute a power unit, and are connected in series, with the generator motor being disposed between the engine and the hydraulic pump and with a center of gravity of the entire power unit being positioned closer to the generator motor than the center of gravity of the engine. A mount installation bracket is mounted at a side of each flange disposed at a corresponding side of the generator motor. A generator-motor-side mount device is mounted to the bracket. | 03-31-2011 |
20110057660 | CURRENT LEAKAGE DETECTOR OF CONSTRUCTION MACHINE - In a construction machine in which a motor is driven by battery power through an inverter in accordance with operation of an operating lever, current-leakage detection signal output means applies a voltage signal, which is adapted for detection of a current leakage, between DC buses connected to the battery and a body of the machine. The applied signal voltage is detected by signal detection means, and the occurrence or non-occurrence of a current leakage is determined based on a crest value of the detected voltage signal. When the operating lever is operated during the determination, the determination is suspended to prevent erroneous detection. | 03-10-2011 |
20110057596 | CURRENT LEAKAGE DETECTOR OF CONSTRUCTION MACHINE - An inverter is forcibly operated to supply electric power to a motor, thereby performing detection of a current leakage, on condition that a power-on operation is performed, that the motor is stopped, and that determination as to occurrence or non-occurrence of the current leakage has not yet been made even once after the power-on. | 03-10-2011 |
20110025097 | CONSTRUCTION MACHINE - In a construction machine wherein a cab is mounted on an upper frame of an upper rotating body through an anti-vibration mount, a guard member for protecting the cab in the event of a roll over of the construction machine is mounted so as to extend from a front face portion to a ceiling of the cab, and a lower end of a front portion of the guard member which front portion covers the front face portion of the cab is fixed to a front end portion of the upper frame by a fixing mechanism which permits movement of the cab created in both vertical and horizontal directions by the anti-vibration mount. | 02-03-2011 |
20110025096 | CONSTRUCTION MACHINE - In a construction machine such as a hydraulic excavator in which a boom of a working attachment is arranged to one of the left and right sides of a cab into which an operator gets on, a load transmission member for transmitting a lateral load imposed on the cab at the time of rollover of a machine main body to the boom serving as a load receiving member is attached to a side surface of the boom in a state that the load transmission member is elastically deformable taking a boom attachment point as a supporting point, further, a projection piece is provided for this load transmission member, and a clearance is formed between this projection piece and a left end surface of a top plate of the boom. | 02-03-2011 |
20110011377 | CONSTRUCTION MACHINE - The present invention provides a construction machine, capable of enhancing the cooling efficiency of an air-cooled cooler for EGR without deterioration of the cooling effect of a heat exchanger in spite of the arrangement of the air-cooled cooler for EGR near a cooling fan. The construction machine includes: an EGR line | 01-20-2011 |
20100303642 | CONTROLLER AND WORK MACHINE PROVIDED THEREWITH - A controller includes: a storage unit that stores a map in which an operation amount and an upper limit value of suction horsepower of a hydraulic pump are associated with each other, for each operation content identified by a cylinder that is an operation object out of the cylinders, and by a direction of operation performed on this cylinder; an operation horsepower determination unit that determines the upper limit value of suction horsepower for each cylinder by using the map stored in the storage unit when an actuation command relating to at least one cylinder is input by an operation lever; a high-level selection unit that selects the maximum upper limit value of suction horsepower out of the upper limit values of suction horsepower determined by the operation horsepower determination unit; and a regulator that regulates a displacement of the hydraulic pump so as to obtain horsepower equal to or lower than the suction horsepower selected by the high-level selection unit. | 12-02-2010 |
20100303541 | CONNECTING MEMBER OF CONSTRUCTION MACHINE - Provided is a boom top comprising first and second support plates and an intermediate support member disposed between the first and second support plates. The intermediate support member has a bottom plate formed with a draw-out hole for a casting mold, and a cover plate covering the draw-out hole. A projection protruding in a draw-out direction of the casting mold is formed on the entire perimeter of an edge facing the draw-out hole, in the bottom plate. | 12-02-2010 |
20100297926 | HYBRID WORKING MACHINE - In a hybrid working machine including a power storage device serving as a power source for a generator motor and a controller for controlling this power storage device, the power storage device and the controller being each made up of a main body and casing covering the main body, the power storage device is arranged on the upper side of a top plate of a stand provided on an upper frame, the controller is arranged on the lower side, an intake port is provided in the casing of the power storage device, an exhaust port is provided in the casing of the controller, a ventilation port is provided in the top plate, and the cooling air is fed into the interior of the power storage device and the controller, so that the power storage device and the controller are cooled down. | 11-25-2010 |
20100296904 | GRIPPING DEVICE OF WORKING MACHINE AND WORKING MACHINE WITH THE SAME - A gripping device includes a gripping-device body mounted to an end of a working arm; two gripping members pivotably supported by this body in an opening-closing direction; and a driver that drives the gripping members to open and close them. At least one of the gripping members includes one of various kinds of detachable sections each including a gripping segment; a holding section pivotably connected to the gripping-device body about a central pivot shaft and selectively holding the detachable section in a detachable manner; and a coupling member for detachable coupling. The detachable section has a restrained segment having a detachable-section through-hole extending parallel to the central pivot shaft. The holding section has an opening-closing-direction restraining segment that restrains the restrained segment in the opening-closing direction and a holding wall to which the restrained segment is fastened with the coupling member from a direction parallel to the detachable-section through-hole. | 11-25-2010 |
20100294578 | WORKING MACHINE - A plurality of supports and a top plate attached to between upper ends of the supports are provided, and a power storage device and a controller are installed on the both upper and lower sides of the top plate respectively. Meanwhile, a hydraulic pump and a control valve are accommodated in space for hydraulic devices on the lower side of the top plate, and a heat insulating member and heat shield plates are provided as heat shield means for protecting the power storage device and the controller against heat from the exterior including heat of the hydraulic pump and the control valve. | 11-25-2010 |
20100294577 | HYBRID WORKING MACHINE - Since a stand including a plurality of supports and a top plate is built in on one side of a rear part of an upper frame of an upper rotating body as seen from an operator in a cabin, and a power storage device is installed on the top plate of this stand, the power storage device is arranged at the highest position among all the devices mounted in the upper rotating body. The power storage device is made up of a main body and a casing, and cooled down by taking cooling air into the casing. | 11-25-2010 |
20100290884 | GRIPPING DEVICE OF WORKING MACHINE AND WORKING MACHINE WITH THE SAME - A gripping device includes a spring member provided between a gripping member body and a shaft so that driving of a gripping driving cylinder causes a driving force to be transmitted from the gripping driving cylinder to the body while the shaft and the body are held in a predetermined positional relationship; so that the body is allowed to retreat with respect to the shaft by elastically deforming the spring member by an opposing force received from a processing object that contacts the body as a result of rotating the body; and so that contact pressure of the body with respect to the processing object is increased by an elastic force of the spring member as the body retreats. | 11-18-2010 |
20100226710 | PIN CONNECTION DEVICE - Assembly of a pin guide member for retaining a pair of connecting pins is facilitated for improvement in an assembling property and cost reduction. On the premise that inner brackets are overlapped with outer brackets, and pins are inserted into pin holes thereof so as to connect the brackets to each other, inner collar portions of pin guide members for retaining the pins are combined and integrated with each other by bolts and nuts through a supporting plate serving as a connection member. Meanwhile, outer collar portions of both the pin guide members are supported in the pin radial direction with respect to the inner brackets and rotation thereof is prevented. | 09-09-2010 |
20100218488 | CONSTRUCTION MACHINE - A construction machine that permits an exhaust gas after-treatment device to be disposed while avoiding an increase of height and hence avoiding narrowing of an operator's visual field. A guard panel is disposed substantially in parallel with a base frame. The guard panel includes a top plate, the top plate including an opening formed at a portion thereof corresponding to an engine, and a bonnet formed so as to project upwards from the top plate and cover the opening. A first treatment section is disposed lower than the top plate and a second treatment section includes at least a portion positioned higher than the top plate through the opening and lower than the bonnet. | 09-02-2010 |
20100206927 | TOOLBOX STRUCTURE OF CONSTRUCTION MACHINE - An illumination device is installed in a box body of a toolbox of a construction machine, and is protected by a protective cover. Water that flows into the box body through a weep hole formed in a lid is received by the protective cover and is guided to a water drain hole formed in a bottom plate of the box body. Then, the water is drained to the outside of the box body. | 08-19-2010 |
20100193296 | HYBRID WORKING MACHINE - As lubricating construction for a spline coupling portion for connecting a rotating shaft of a generator-motor and a rotating shaft of a hydraulic pump both actuated by an engine, a lubricating oil chamber communicating with the spline coupling portion is formed within a motor casing of the generator-motor, while in a pump casing of the hydraulic pump there is formed an oil passing hole providing communication between the lubricating oil chamber and an oil chamber in the hydraulic pump on an outer periphery side of the rotating shaft of the hydraulic pump, thereby forming an oil passage for allowing working oil present within the hydraulic pump to circulate through a route including the spline coupling portion. | 08-05-2010 |
20100192551 | CONSTRUCTION MACHINE - A construction machine that permits an exhaust gas after-treatment device to be disposed while suppressing an increase of height. An upper surface of a hydraulic pump is positioned lower than an upper surface of an engine, a tank device having at least one of a working oil tank and a fuel tank is provided at a rear portion thereof with a small height portion which has an upper surface of a height almost equal to or smaller than the height of the upper surface of the hydraulic tank, and an exhaust gas after-treatment device is disposed at a position above both the small height portion and the hydraulic pump. | 08-05-2010 |
20100170974 | HYDRAULIC CRUSHER - A hydraulic crusher includes crushing arms, a crusher body having a hollow portion extending in the longitudinal direction, and hydraulic cylinders. The hydraulic crusher includes four first hydraulic hoses which have proximal caps connected to ports of the crusher body and extend toward the distal side in the longitudinal direction in the hollow portion; four second hydraulic hoses which have proximal caps connected to ports of the hydraulic cylinders, and extend into the hollow portion and then toward the distal side in the longitudinal direction while being curved; and a clamp or the like serving as a joint member movable in the longitudinal direction, the clamp connecting distal sections of the first hydraulic hoses with distal sections of the second hydraulic hoses. | 07-08-2010 |
20100170239 | HYBRID WORKING MACHINE - In a hybrid working machine in which the maximum engine output is set at the average power and the maximum pump input is set to be larger than the maximum engine output in a normal state, in an abnormal state in which the level of charge of a battery decreases and assistance ability of a motor function of a power machine is lost, the minimum pump flow rate is reduced to a value equal to or smaller than a standby flow rate, the standby flow rate being the minimum pump flow rate used in normal state control, and a set value of the maximum pump input is changed such that the maximum pump input is smaller than the maximum engine output. | 07-08-2010 |
20100146860 | WORKING MACHINE - A working machine has a machine room cover and a bonnet on an upper rotating body. The bonnet has a frame-like raising member and a dome-like hood member that covers an opening in the upper part of the raising member. The lower part of the raising member is attached so as to surround an opening portion formed in the upper surface of the machine room cover, and the hood member is attached to the raising member so as to be able to be rotationally opened and closed. | 06-17-2010 |
20100126791 | CONSTRUCTION MACHINE - A muffler of a construction machine is formed by respectively coupling silencers to entrance and exit sides of an exhaust-gas purifying device by flanges. In flange coupling portions, mounting seats are provided integrally with lower semicircumferential portions of the flanges of the silencers in a manner such as to protrude toward outer peripheries of the flanges. By coupling the mounting seats to muffler mount brackets attached to a muffler mount, the muffler is mounted on the muffler mount. | 05-27-2010 |
20100122865 | CONSTRUCTION MACHINE - A gate-shaped muffler mount including front and rear leg portions and a muffler attaching portion is attached to a mounting bracket for supporting an engine with bolts so as to straddle a hydraulic pump. One of mounting holes has a diameter larger than the diameter of the bolt, and the muffler mount is therefore rotatable around the other bolt along the axial direction of a bellows. By this rotation, the bellows can be positionally adjusted in the axial direction relative to an engine exhaust pipe so that assembly errors can be absorbed. | 05-20-2010 |
20100102763 | HYBRID WORKING MACHINE - In a hybrid excavator, a generator motor and a hydraulic pump are driven by using an engine as a power source. A battery is charged with power generated by the generator motor. A rotation motor is driven by the generator motor and the battery. The voltage of a DC bus is detected by a voltage sensor, and whether the battery is unusable is determined by a breakdown detector. When the battery becomes unusable, emergency evacuation control is performed so that the power consumption of the rotation motor will be suppressed to be less than or equal to the power generation of the generator motor while maintaining the DC bus voltage greater than or equal to the normal operation voltage of the system. | 04-29-2010 |
20100089049 | HYDRAULIC DRIVE DEVICE AND WORKING MACHINE WITH THE SAME - A hydraulic drive device capable of utilizing return oil effectively while maintaining a driven speed of a hydraulic actuator, as well as a working machine having the hydraulic drive device, are provided. The hydraulic drive device includes a controller. During an external force applying period in which a return oil pressure exceeds a discharge pressure from a hydraulic pump, the controller specifies a regenerating flow rate capable of being conducted to a regeneration oil passage and a surplus flow rate other than the regenerating flow rate on the basis of power required of the hydraulic pump out of return oil other than return oil which is conduced to a tank through a control valve, then conducts the return oil of the regenerating flow rate to the regeneration oil passage and controls an MO valve and a regulator so that the return oil of the surplus flow rate is conducted to an outlet oil passage. | 04-15-2010 |
20100032985 | CABIN AND TRAVELING CONSTRUCTION MACHINE WITH THE SAME - A rear beam has a first beam with right and left ends welded to right and left rear supports and a second beam welded to a front surface of the first beam along the right and left direction. The second beam is welded to the first beam so that an upper end portion of the second beam is above an upper end portion of the first beam and a lower end portion of the second beam is above a lower end portion of the first beam. | 02-11-2010 |
20100032984 | REINFORCED STRUCTURE FOR CABIN OF WORKING MACHINE - A reinforced structure for a cabin of a working machine is disclosed, which comprises a cabin, a boom installed along the cabin, and a reinforcing member provided for the cabin. The cabin includes front pillars, upper pillars and rear pillars. The reinforcing member includes a first member located longitudinally between upper ends of the front and rear pillars located on the working apparatus side of the cabin, the first member being fixed to the upper pillar located on the same side, and a second member, one end of the second member being fixed to an intermediate position of the first member, and the other end thereof being fixed to the other upper pillar. | 02-11-2010 |
20090309343 | CONSTRUCTION MACHINE - Handrail mounts are provided in a bottom portion of a cast upper frame, and lower ends of side supports of a handrail are attached to the above handrail mounts. A base plate for attaching a floor plate is hanged and fixed between the side supports at a higher position than the attachment position, and a front end part of the floor plate is attached to the above base plate. | 12-17-2009 |
20090304485 | WORKING MACHINE WITH STRUCTURE FOR ASSEMBLING BOOM THEREOF - Bosses extending in the boom width direction are provided in a front end part of a main boom body rotated upward, and hooks opening downward are provided in a base end part of a front boom body rotated downward. In a state that the bosses and the hooks are engaged with each other, a scooping action is performed so as to match pin holes thereof. The above hooks and the bosses are arranged so as to satisfy a condition that in a state that an angle between both boom bodies is a maximum angle at the time of work, the hooks and the bosses are moved away from each other and a distance between the hooks and the bosses is increased as the angle is reduced from the maximum angle. | 12-10-2009 |
20090304484 | WORKING MACHINE WITH STRUCTURE FOR ASSEMBLING BOOM THEREOF - Bosses extending in the boom width direction are provided in a front end part of a main boom body rotated upward, and hooks opening downward are provided in a base end part of an extension boom body rotated downward. The above hooks and the bosses are arranged so as to satisfy a condition that at the time of second relative rotation by a two-step pin hole matching method of matching pin holes in order from the upper side and with a different center, the hooks and the bosses are moved away from each other while lower pin holes are matched with each other. | 12-10-2009 |
20090205723 | HYDRAULIC CIRCUIT OF CONSTRUCTION MACHINE - A throttle path for returning a part of pilot oil to a tank is formed by a tank path provided in a valve block of a control valve and a notch provided in a spool thereof. The above path is opened within a section from a vicinity of a stroke where a hydraulic actuator starts moving to right before a stroke end among a spool stroke of the control valve. An opening area of the above path is slowly reduced in accordance with an increase in the stroke at a final phase of the section. | 08-20-2009 |
20090205328 | CONSTRUCTION MACHINE - A rear half part of a surface of a main body of a working oil tank installed in line with a control valve opposing to the valve is dented in an inclining surface shape in the direction moving away from the valve so that between both the tank and the valve, is formed a working space for attaching and detaching a pressure compensating spool, while return tubes are separately connected to the upper and the lower side of a filter case side wall within the body. Within the body, is provided a cylindrical filter case having a bottom in which a return filter for return oil is housed, and the return tubes are connected to the case side wall in a state of communicating with the inside of the filter case. In this configuration, a filter receiving plate is provided in a lower part within the filter case with leaving a gap between the plate and the filter case bottom wall in a state that the plate is supported by a return pipe, the return filter is disposed on the plate, and the return tubes are connected to the filter case side wall on the lower side than the plate. | 08-20-2009 |
20090140547 | MOUNTING STRUCTURE OF DRIVERS CAB TO BASE FRAME AND CONSTRUCTION MACHINE THEREWITH - A restraining means includes a shaft member projecting laterally from a frame member, and a plate which is fixed to a base frame and in which an insertion hole capable of inserting the shaft member therethrough is formed. The restraining means is configured so that an inner surface of the insertion hole and the shaft member are not in contact with each other within a moving range of a drivers cab allowable by an installation mount, and so that the inner surface of the insertion hole is in contact with an upper surface of the shaft member when the drivers cab is lifted from the base frame beyond the moving range. | 06-04-2009 |
20090030580 | EXCAVATOR - In a corner part on the front and lower side of a contact area between a bucket and a cabin formed by an area front surface serving as a front limitation of the contact area and an area lower surface serving as a lower limit of the contact area, an exception area of a right triangle seen from the side taking the area front surface as a vertical side and the area lower surface as the base is set under a fixed condition. When an arm top pin is within the above exception area, a contact prevention function is cancelled and actions of boom raising, arm pulling and left offset are permitted in a decelerating state. | 01-29-2009 |
20080296522 | RELIEF PRESSURE SWITCHING APPARATUS FOR HYDRAULIC WORKING MACHINE - In a relief pressure switching apparatus for hydraulic working machine for switching a relief pressure of a hydraulic actuator circuit in accordance with a specification of a compression crushing apparatus or a breaker to be installed, electromagnetically variable relief valves for determining the relief pressure are provided, and a controller commands the relief pressure selected by an operator from a plurality of relief pressures preliminarily set and stored in combination with a flow rate as matching a working apparatus to the relief valves. | 12-04-2008 |
20080282586 | UPPER ROTATING BODY AND CONSTRUCTION MACHINE THEREWITH - The present invention is provided with a pair of vertical plates disposed on a rotating frame, a fuel tank and a working oil tank aligned on the rotating frame in the front-back direction, hydraulic pipes for coupling a control valve provided in the working oil tank and a working actuator, and a retaining tool for retaining the hydraulic pipes between the control valve and the actuator, and the hydraulic pipes are arranged from the control valve to the retaining tool through a clearance formed between the fuel tank and the working oil tank. | 11-20-2008 |
20080250782 | HYDRAULIC CONTROL DEVICE OF WORKING MACHINE - A rotation prioritizing valve serving as a flow rate control valve of a hydraulic pilot type is provided on the meter-in side of an arm cylinder. At the time of a combined operation of arm pulling and rotation, the rotation prioritizing valve is activated by rotation pilot pressure so that a meter-in flow rate of the arm cylinder is throttled to prioritize rotation movement. On the premise of the above, a switching valve is provided in a pilot line of the rotation prioritizing valve and switched so as to release a throttling effect of the rotation prioritizing valve when boom lowering movement is added to the combined operation of arm pulling and rotation so that a rotation prioritizing function is cancelled. | 10-16-2008 |
20080223319 | Cooling Structure of Construction Machine - Problem: To improve a soundproof performance on an air intake side of a cooling structure of a construction machine without enlarging an air intake chamber. | 09-18-2008 |
20080202451 | MOUNTING STRUCTURE OF FILTER FOR COOLER OF CONSTRUCTION MACHINE - On the front surface side of a cooler, a filter mounting portion provided with a filter abutment surface with which a filter is brought into abutment from the front side of the filter mounting portion is provided. The front end side of the filter pushed in from a maintenance port is pressed onto an elastic body formed of a plate spring and provided in the filter mounting portion. Thereby, by a pressing force F | 08-28-2008 |
20080201045 | ROTATION CONTROL DEVICE AND WORKING MACHINE THEREWITH - An excavator has a controller capable of setting target torque of a rotation motor in accordance with a speed deviation between target speed set in accordance with an operation amount of an operating lever and actual rotation speed and is provided with an inverter for detecting necessary torque for rotating an upper rotating body, the necessary torque being changed in accordance with a working state of the upper rotating body. The controller calculates a correction amount which is increased as increasing the torque and subtracts the correction amount from the target speed so as to set new target speed. A controller sets first target torque for driving the motor and second target torque for maintaining the upper rotating body on the spot on the basis of the actual speed, and operates the motor in accordance with the torque which has a larger absolute value in the same direction as the first target torque among both the torque. | 08-21-2008 |