| HITACHI CONSTRUCTION MACHINERY CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20120134768 | CONSTRUCTION MACHINE - A floor member is formed by a seat support platform on a rear side and a footrest area located on a front side of the seat support platform, and a cab box is formed by a front panel, a rear panel, a left front side panel, a left rear side panel, a right side panel, and a top panel. A right reinforcing panel is provided at a right side position of the floor member and rises upwardly of the footrest area. The right side panel of the cab box corresponding to this right reinforcing panel is provided with a notched portion for avoiding interference with the right reinforcing panel. Accordingly, since the strength at the right side position of the floor member can be enhanced by the right reinforcing panel, it is possible to prevent deformation such as torsion and distortion when the floor member is tilted up. | 05-31-2012 |
| 20120118661 | STEERING SYSTEM OF INDUSTRIAL MACHINE AND METHOD OF CHANGING BODY-ARTICULATING ANGLE - A steering system, in a state where a first steering means is not operated, a third signal pressure output means outputs a third signal pressure in response to a second signal pressure fed to the third signal pressure output means, and feeding and discharging control means operates based in the third signal pressure, while in a state where the first steering means is operated, the third signal pressure output means stops outputting of the third signal pressure regardless of whether or not the second signal pressure is fed to the third signal pressure output means, and the feeding and discharging control means operates based on the first signal pressure. | 05-17-2012 |
| 20120106881 | GREASE FOR SLIDE BEARING - Grease for a slide bearing, which can suppress unusual noise attributable to a slip caused between a shaft and a bearing when a machine is stopped. In slide bearing grease | 05-03-2012 |
| 20120101696 | Rotation Control Device for Working Machine - A working machine swing control system is provided with an actual rotation speed sensor and a controller. The actual rotation speed sensor senses an actual rotation speed of a swing motor. The controller controls a drive torque of a drive unit, which drives the swing motor, such that a difference between a target rotation speed outputted from a swing control device and the actual rotation speed outputted from the actual rotation speed sensor is reduced to zero. The swing control system includes a correction device for correcting the target rotation speed outputted from the swing control device according to a work posture of working equipment and a work load on the working equipment. | 04-26-2012 |
| 20120100959 | Working Vehicle Control Apparatus - A working vehicle control apparatus includes: a selection device that selects a power mode or an economy mode; a determination device that determines whether or not a speed restriction condition and a load pressure have been established; an engine rotational speed restriction device that restricts a maximum rotational speed of the motor upon selection of the economy mode to a lower speed side than a maximum rotational speed of the motor upon selection of the power mode when it is determined that the speed restriction condition has been established; and a vehicle speed restriction device that restricts a maximum vehicle speed upon selection of the economy mode to a lower speed side than a maximum vehicle speed upon selection of the power mode when it is determined that a speed restriction condition has not been established. | 04-26-2012 |
| 20120095655 | Motor Control Device for Working Vehicle - A working vehicle motor control device includes: a rotational speed control device that controls a motor rotational speed in accordance with an operation amount of an accelerator pedal; a travel drive device that transmits rotation of the motor to wheels through a torque converter and a transmission; a speed ratio detection device that detects a speed ratio of an input shaft and an output shaft of the torque converter; and a speed restriction device that restricts a maximum rotational speed of the motor in accordance with a speed ratio detected by the speed ratio detection device. In the working vehicle motor control device, the speed restriction device restricts the maximum rotational speed when a detected speed ratio is in an acceleration region of the motor rotational speed to less than the maximum rotational speed when a detected speed ratio is in a non-acceleration region. | 04-19-2012 |
| 20120094803 | Engine Speed Control Device For Industrial Vehicle - An engine speed control device for an industrial vehicle includes an approach detector that detects an approach of the industrial vehicle to an object to be approached; and an engine speed controller that restricts an upper limit of a rotation speed of an engine when the approach detector detects an approach of the industrial vehicle to an object to be approached. | 04-19-2012 |
| 20120094801 | Motor Control Device for Working Vehicle - A motor control device for a working vehicle includes: a travel drive device that transmits rotation of a motor to wheels through a torque converter; a first selection device to be operated so as to select one of a power mode and an economy mode; a second selection device that is different from the first selection device; a mode switching device that switches from the economy mode to the power mode if the second selection device is operated in a state where the economy mode has been selected by the first selection device; and a speed restriction device that, when the economy mode is set, restricts a maximum rotational speed of the motor to a lower speed side than that when the power mode is set. | 04-19-2012 |
| 20120089307 | Work Vehicle Control Device - A work vehicle control device includes: a rotation speed control unit that controls an engine rotation speed in correspondence to an accelerator pedal operation quantity indicating an operating extent of an accelerator pedal; a speed ratio detection unit that detects a ratio of speed at an input shaft and at an output shaft of a torque converter, which is disposed between the engine and wheels; a decision-making unit that makes a decision that a fuel efficiency deteriorating condition exists if the torque converter speed ratio is less than a predetermined value or if the torque converter speed ratio is equal to or greater than the predetermined value and a target engine rotation speed corresponding to an operation of the accelerator pedal is greater than a preset value; and an informing unit that informs results of the decision made by the decision-making unit. | 04-12-2012 |
| 20120079810 | Exhaust Assembly for Construction Machine - Disclosed is an exhaust assembly for a construction machine having a revolving upperstructure and an engine mounted on the revolving upperstructure. The exhaust assembly is to be arranged inside the revolving upperstructure of the construction machine, and is provided with an after-treatment device for exhaust gas from the engine and an exhaust pipe for releasing exhaust gas, which has been guided from an outlet port of the after-treatment device, to an outside. The exhaust assembly includes a concave-convex part, which has plural concavities and convexities, is arranged on an inner wall of the exhaust pipe, and extends in a direction of discharge of the exhaust gas. | 04-05-2012 |
| 20120067661 | CONSTRUCTION MACHINE - A urea water tank ( | 03-22-2012 |
| 20120067660 | CONSTRUCTION MACHINE - A fuel tank ( | 03-22-2012 |
| 20120061177 | Working Machine - A working machine is provided with a revolving upperstructure, working equipment, an engine compartment, a counterweight, a muffler, and an exhaust path for releasing exhaust gas, which has been discharged from the muffler, to an outer side of the revolving upperstructure. The exhaust path includes a tailpipe connected to the muffler and an exhaust pipe for releasing exhaust gas, which has been discharged from the tailpipe, to the outer side of the revolving upperstructure. The counterweight is utilized for the formation of the exhaust path. The exhaust path includes a passage formed in the counterweight and accommodating an upper end portion of the tailpipe inserted therein with a predetermined clearance formed around the upper end portion such that the exhaust gas discharged from the tailpipe can be guided to the exhaust pipe. | 03-15-2012 |
| 20120031088 | HYDRAULIC DRIVE SYSTEM FOR CONSTRUCTION MACHINE - A hydraulic drive system for a construction machine allows automatic changes of the operational characteristics of a boom directional control valve by judging whether or not a hydraulic boom cylinder needs driving pressure at the time of a boom lowering operation. | 02-09-2012 |
| 20120004814 | Engine Control Device for Work Vehicle - An engine control device for work vehicle includes: a rotation speed control device that controls a rotation speed of an engine according to an operation amount of an accelerator pedal; a travel drive device that transmits a rotation of the engine to wheels through a torque converter and a transmission; a water temperature detection device that detects a physical quantity correlated with a cooling water temperature of the engine; a speed ratio detection device that detects a speed ratio of an input shaft and an output shaft of the torque converter; and a speed limit device that limits a maximum rotation speed of the engine to a limit rotation speed which is lower than an upper limit value if the water temperature detection device detects an overheat state in which the cooling water temperature is equal to or higher than a predetermined value when the speed ratio detected by the speed ratio detection device is in a limit speed ratio region where a torque converter efficiency is equal to or less than a predetermined value. | 01-05-2012 |
| 20120000191 | Hydraulic Driving Device for Work Machine - Disclosed is a hydraulic drive system for a working machine, which enables to conduct forced regeneration continuously for a sufficient time. Based on an input of a lock detection signal S | 01-05-2012 |
| 20110308882 | TRANSPORTER VEHICLE - There is provided a circulation line ( | 12-22-2011 |
| 20110297486 | FORKLIFT | 12-08-2011 |
| 20110276842 | MACHINE ABNORMALITY MONITORING DEVICE - A machine abnormality monitoring device has basic information and a priority level preset for each type of abnormality. When an abnormality occurs, snapshot data regarding the abnormality occurrence is stored while being associated with the basic information. In cases where a new abnormality occurs when the snapshot data storage unit has no free storage area, if snapshot data at a priority level lower than that of the new abnormality exists in prior snapshot data stored in the snapshot data storage unit, the storage control unit stores the snapshot data regarding the new abnormality in the snapshot data storage unit in place of the prior snapshot data at the lower priority level while associating the new snapshot data with the basic information. Thus, the administrator is able to acquire the snapshot data regarding an abnormality in question with high reliability. | 11-10-2011 |
| 20110276235 | PRIME MOVER REVOLUTION SPEED CONTROL SYSTEM FOR HYDRAULIC CONSTRUCTION MACHINE - A prime mover revolution speed control system for a hydraulic construction machine sets the revolution speed of the prime mover in accordance with the operating state invoked by an operating command and as a result of a determination of an excavation state so that that the revolution speed of the engine can be increased for a heavy load (speedup) in the excavation state. When the control lever is fully operated in the direction of arm crowding, the control lever | 11-10-2011 |
| 20110227744 | DIAGNOSTIC INFORMATION SUPPLY APPARATUS FOR CONSTRUCTION MACHINE - An information supply apparatus for a construction machine is adapted to enhance alarm/trouble cause checking accuracy. A user-side personal computer | 09-22-2011 |
| 20110219762 | CONSTRUCTION MACHINE - A top cover ( | 09-15-2011 |
| 20110219757 | Muffler Draining Apparatus for Working Machine - A muffler draining apparatus for a working machine is provided which allows a drain line having excellent heat resistance to be reliably installed, even when a device or equipment is present at the position below a muffler. In a muffler draining apparatus that is provided to a muffler equipped to a hydraulic excavator, and includes a drain line that discharges water accumulated in the muffler to the outside of a vehicle body, the above-described drain line includes a single metal tubing whose one end is connected to the muffler, and whose intermediate portion provided continuous to the one end is extended into the space formed between the muffler and a hydraulic pump located below the muffler. The intermediate portion of the metal tubing includes a single linear portion and plural bent portions. Also, the muffler draining apparatus includes, for example, a single support bracket that is fixed to the muffler, and supports the intermediate portion of the metal tubing. | 09-15-2011 |
| 20110219744 | Exhaust Gas Treatment Apparatus for Working Machine - An exhaust gas treatment apparatus for a working machine is provided to reliably prevent a specific process that raises the exhaust temperature of an exhaust gas treatment section from being carried out during switching operation of a directional control valve. The apparatus includes: a directional control valve that controls the flow of pressure oil supplied to an actuator; a pilot pump that supplies pressure oil to an operating device operated to switch the directional control valve; an open/close valve arranged downstream of the directional control valve; a control valve that controls the open/close valve; a lock valve arranged between the pilot pump and the operating device; a detecting section that detects when a specific process that raises the exhaust temperature of an exhaust gas treatment section becomes necessary, and outputs the corresponding detection signal; a controller that controls the control valve; and a pipe for performing a process of setting the open/close valve to an open position in accordance with the pilot pressure oil supplied from the pilot pump. | 09-15-2011 |
| 20110210583 | TRUCK FRAME FOR CONSTRUCTION MACHINE - A frame for use in a construction machine such as a hydraulic excavator, in which a circle member ( | 09-01-2011 |
| 20110200282 | VEHICLE DRIVE UNIT FOR DUMP TRUCK - A wheel drive motor ( | 08-18-2011 |
| 20110192156 | Hydraulic Drive Device for Construction Machine - A hydraulic drive device for a construction machine which can reliably judge whether or not the state of the construction machine is appropriate for stopping an engine is provided. The hydraulic drive device includes: a main pump | 08-11-2011 |
| 20110192155 | Hydraulic Drive Device for Hydraulic Excavator - The operability when performing a combined arm-crowd and bucket operation can be improved. A hydraulic drive device for a hydraulic excavator includes: a bucket directional control valve and a second arm directional control valve, which are connected in parallel tandem with a first hydraulic pump; a first arm directional control valve that is connected to a second hydraulic pump; and a flow rate restriction device that restricts the flow rate of pressure oil supplied to the second arm directional control valve, during crowd operation of a bucket. This flow rate restriction device includes a variable throttle whose opening is controlled so as to become smaller as a bucket operating device is operated to the crowd side, the variable throttle being provided in a bypass path connecting to the supply port of the second arm directional control valve. | 08-11-2011 |
| 20110182694 | CONNECTOR DEVICE FOR CONSTRUCTION MACHINE - An internally threaded hole ( | 07-28-2011 |
| 20110175427 | TRANSPORTER VEHICLE - In the course of largely tilting a vessel ( | 07-21-2011 |
| 20110173964 | HYDRAULIC DRIVE SYSTEM FOR CONSTRUCTION MACHINE - A main relief valve | 07-21-2011 |
| 20110153275 | Device for Detecting Contamination Level of Operating Oil - A contamination level determination system for hydraulic oil is provided with a pilot filter arranged in a line of a hydraulic circuit of a hydraulic working machine to remove, from the hydraulic oil, foreign matter of particle sizes that may cause an operation failure of the hydraulic working machine. A first light-blocking sensor senses passage of foreign matter on an upstream side of the pilot filter. A second light-blocking sensor senses passage of foreign matter on a downstream side of the pilot filter. An onboard controller unit functions to determine a frequency of sensing of foreign matter by the first light-blocking sensor, to determine a frequency of sensing of foreign matter by the second light-blocking sensor, and to determine a contamination level on the upstream side of the pilot filter on the basis of results of the determinations from both sensors. | 06-23-2011 |
| 20110152139 | GREASE FOR SLIDE BEARING - Grease for a slide bearing, which can suppress unusual noise attributable to a slip caused between a shaft and a bearing when a machine is stopped. In slide bearing grease | 06-23-2011 |
| 20110150615 | DUAL ARM WORKING MACHINE - A dual arm hydraulic excavator | 06-23-2011 |
| 20110146283 | Engine Lug-Down Suppressing Device for Hydraulic Work Machinery - To provide an engine lug-down suppressing device for hydraulic work machinery, capable of suppressing deterioration in operability of a hydraulic actuator when the hydraulic actuator is caused to operate quickly from a stopped state. | 06-23-2011 |
| 20110128116 | Communication System - In a work machine, a communication system is provided, in which, when damage of disconnection or the like of a communication line occurs, desired communication is enabled without requiring manual replacement of the damaged communication line. The communication system is provided in a hydraulic excavator and comprises a vehicle body controller | 06-02-2011 |
| 20110120085 | EXHAUST GAS TREATMENT DEVICE - An engaging groove ( | 05-26-2011 |
| 20110113766 | Vehicular Back Processing System - An exhaust gas post-treatment system for a vehicle is provided, which in the course of regeneration ascertains whether or not there is any object approaching a body of the vehicle from behind. A filter is arranged in an exhaust passage of an engine to trap PM therein. A trapped and deposited PM amount sensing device senses a deposited amount of PM deposited in the filter. A fuel injector burns and removes PM deposited in the filter to conduct regeneration of the filter. A rearward monitoring camera monitors a scene rearward of a vehicle body. A display module displays monitoring information from the rearward monitoring camera, and a controller having a regeneration processing unit executes control processing to actuate the fuel injector and to perform regeneration. The controller includes a display continuation processing unit for executing control processing such that during the regeneration by the fuel injector, the monitoring information from the rearward monitoring camera is continuously displayed on a display screen of the display module. | 05-19-2011 |
| 20110111995 | GREASE COMPOSITION AND PROCESS FOR PRODUCTION THEREOF - In this grease composition, a grease produced by mixing at least one base oil selected from a mineral oil-type lubricant base oil, a synthetic lubricant base oil, and a biodegradable lubricant base oil with a thickener is compounded with a wax and water, and an additive such as a surfactant and a defoamer is optionally compounded therewith. A soap containing a calcium sulfonate complex is used as the thickener. A carnauba wax is preferably used as the wax. Since this grease composition is mainly composed of a grease and a wax, the grease composition extremely facilities its removal operation after application, is environmentally friendly, and has extremely excellent anti-corrosion performance. When the grease composition is used by being applied to a base material of an object to be welded, an effect of preventing the adhesion of welding spatters can be obtained. | 05-12-2011 |
| 20110088637 | CONSTRUCTION MACHINE - A radiator and an oil cooler are arranged at a front surface side of a cooling fan in parallel with each other in a flow direction of the cooling air, an intercooler and a condenser are arranged in parallel at a front surface side of the radiator and oil cooler, and a fuel cooler is arranged at a front surface side of the condenser. By arranging respective heat exchangers such that the heat release amount thereof sequentially increases from the upstream side toward the downstream side in the flow direction of the cooling air, each heat exchanger can efficiently release the heat of the fluid to be cooled. By arranging the fuel cooler at the front surface side of the condenser, two heat exchangers of the condenser and the fuel cooler can be accommodated within a range of the thickness dimension of the intercooler. | 04-21-2011 |
| 20110061755 | HYDRAULIC CIRCUIT SYSTEM FOR HYDRAULIC EXCAVATOR - A hydraulic circuit system for a hydraulic excavator, which has a hydraulic circuit for an attachment, includes: a directional control valve | 03-17-2011 |
| 20110036674 | Work Vehicle Control Device - The present invention includes a hydraulic brake device | 02-17-2011 |
| 20110033274 | Construction Machine - A construction machine includes: a work arm rotatably mounted at a construction machine main body; a work tool mounted at the work arm; an attitude decision device that decides an attitude of the work arm or the work tool relative to the construction machine main body; a follow-up enabling device that allows the work armor the work tool to follow a displacement of a contacting object that comes into contact with the work tool and applies an external force to the work tool, by adjusting the attitude of the work arm or the work tool decided by the attitude decision device; and a switching device that selects whether or not to allow the work arm or the work tool to follow the displacement of the contacting object via the follow-up enabling device. | 02-10-2011 |
| 20110030353 | EXHAUST GAS PURIFYING DEVICE - A support member ( | 02-10-2011 |
| 20110019949 | BEARING DEVICE - A dust seal is provided with a tubular fitting portion, a bush end surface abutting portion, a lip portion and a sealing projection integrally formed. The sealing projection is formed to project in an axially opposite direction to the lip portion from a radial inner section of the bush end surface abutting portion and abuts against a chamfered portion of a bush in such a manner as to overlap the chamfered portion. Therefore, at the time of supplying lubricant between the bush and a connecting pin, the sealing projection can prevent a part of the lubricant from entering between an end surface of the bush and the bush end surface abutting portion of the dust seal to maintain a sealed state therebetween. In consequence, the dust seal can be stably held on the inner peripheral side of a boss member, preventing the pulling-out of the dust seal. | 01-27-2011 |
| 20110011064 | Engine Powered Machine - An engine powered machine is provided with a high-performance exhaust gas purification system and is capable of promptly raising a temperature of an operator's cab to a comfortable temperature. The exhaust gas purification system that makes use of an NOx removal catalyst and a reducing agent is provided with a reducing agent heater for heating a reducing agent, which is stored in a reducing agent tank, with heat of an engine cooling medium and an on/off device for controlling an introduction of the engine cooling medium into the reducing agent heater. When a temperature of the engine cooling medium is higher than a first predetermined temperature, a temperature of the reducing agent in the tank is lower than a second predetermined temperature and a temperature in an operator's cab is lower than a third predetermined temperature, a controller switches the on/off device into a dosed state to increase a flow rate of the engine cooling medium to be guided to a heat exchanger of a heating apparatus. | 01-20-2011 |
| 20110008142 | Working Machine - A working machine is provided with a front working mechanism. The front working mechanism includes a first working element, a second working element and a hydraulic cylinder. The hydraulic cylinder is connected at a forward end portion thereof to the second working element and at a rearward end portion thereof to the first working element, and is constructed pivotable relative to the second working element within a predetermined range of work angles. The working machine is provided with a pivotal movement restraining device for allowing the hydraulic cylinder to pivot within the predetermined range of work angles while the hydraulic cylinder is connected to the second working element but for restraining the hydraulic cylinder from pivoting beyond the predetermined range of work angles in a direction away from the first working element while the second working element is detached from the hydraulic cylinder. | 01-13-2011 |
| 20110005853 | Mounting Structure for NOx Reduction Device for Construction Machine - A mounting structure is provided for an NOx reduction system for a hydraulic excavator. The NOx reduction system includes a PM collection filter to be arranged in an exhaust passage of an engine to collect suspended particulate matter in exhaust gas from the engine, a urea SCR catalyst for reducing and purifying nitrogen oxides in the exhaust gas from the engine, a urea water spay device for spraying a urea water into the exhaust passage of the engine, a urea water feeder for feeding the urea water to the urea water spray device, and a urea water storage tank for storing therein the urea water to be guided to the urea water feeder. In the mounting structure, the counterweight is provided with a recessed section formed therein, the urea SCR catalyst is arranged in the recessed section, and the PM collection filter is arranged in the engine compartment. The urea SCR catalyst and PM collection filter are arranged to form an “L” pattern. | 01-13-2011 |
| 20110004559 | MANAGEMENT SYSTEM AND METHOD FOR EXHAUST PURIFICATION APPARATUS - In a server | 01-06-2011 |
| 20110000637 | Heat Exchanging Device for Construction Machine - To provide a heat exchanger assembly for a construction machine, which can facilitate attachment/detachment work of dustproof nets and can attach the dustproof nets with suppressed flapping. A heat exchanger assembly for a construction machine is provided with heat exchangers mounted on a frame for cooling a drive source mounted on the frame, a fan mounted on the frame for supplying cooling air to the heat exchangers, and dustproof nets arranged upstream of the heat exchangers in a flow of the cooling air produced by the fan. The dustproof nets are each provided with a net section held taut within a frame section, and a clipping part attached to the frame section. The clipping part is arranged such that it can be releasably fastened to a clipped part arranged on the corresponding heat exchanger. The clipping part is provided at its end portion with a bent portion. At least one of the bent portion | 01-06-2011 |
| 20110000199 | CONSTRUCTION MACHINE - An upstream cylinder ( | 01-06-2011 |
| 20110000197 | WORKING MACHINE - An exhaust gas treatment filter removes particulate matter from exhaust gas of a diesel engine. The particulate matter which accumulates on the filter is removed by a manual regeneration system that can simply be controlled. After a manual regeneration switch | 01-06-2011 |
| 20100332088 | Engine Control System for Construction Machine - To provide an engine control system for a construction machine, which can decrease a consumption of energy to be required for the reduction of an engine lag-down that occurs upon a sudden increase in load, such as upon quick manipulation of a control device, is provided with a load condition detecting unit, a charge amount detecting unit, a boost pressure sensor, and a determination processing unit. The load condition detecting unit includes a manipulation stroke detector for detecting that a control device has been fully manipulated, and also, a first computation unit of a controller. The charge amount detecting unit can detect an amount of charge in a capacitor. The determination processing unit includes a determination processing unit of the controller. The determination processing unit performs processing to feed electric power from the capacitor to an electric motor if, when it has been detected in concomitance with manipulation of the control device by the load condition detecting means that a torque to be absorbed by a pump would exceed an output torque of an engine, a boost pressure detected by the boost pressure sensor is determined to be lower than a predetermined pressure, and moreover, an amount of charge in the capacitor as detected by the charge amount detecting unit is determined to be an amount of charge that can drive the electric motor for a predetermined time. | 12-30-2010 |
| 20100326058 | WORKING MACHINE - Disclosed is a working machine capable of preventing damage to a filter due to excessive accumulation of particulate matter (PM), even under a situation that requires, prior to compulsory regeneration of the filter, moving the machine to a place in which to perform the regeneration work. | 12-30-2010 |
| 20100317486 | Clutch Control Device for Hydraulically Driven Vehicle - A first motor | 12-16-2010 |
| 20100316445 | METHOD FOR CONTINUOUS ON-SITE REPAVING OF AN ASPHALT MIXTURE LAYER OF PAVED ROAD PAVEMENT AND A MOTOR-DRIVEN VEHICLE SYSTEM THEREFOR - Problem to be Solved The present invention provides a method for continuous on-site repaving of an asphalt mixture layer of a road pavement and a motor-driven vehicle system therefor, while moving the motor-driven vehicle system. | 12-16-2010 |
| 20100293928 | Mounting Structure for NOx Reduction Device for Construction Machine - [Problem] To provide a mounting structure for an NOx reduction system for a construction machine, said mounting structure being capable of relaxing restrictions on a space for the arrangement of the NOx reduction system. | 11-25-2010 |
| 20100283278 | CONSTRUCTION MACHINE - A space surrounded by a partition member ( | 11-11-2010 |
| 20100277590 | Construction Machine - [Problem] To provide a construction machine, which can surely perform confirmation of conditions around a machine body upon starting work and can start a prime mover even when obstruction exists around the machine body. | 11-04-2010 |
| 20100275588 | CONSTRUCTION MACHINE - An engine ( | 11-04-2010 |
| 20100274436 | Pedal Lock Control Device for Work Vehicle - A pedal lock control device for work vehicle includes : a motor driving device that drives a travel hydraulic motor in response to an operation amount of a travel pedal; a locking device that locks the travel pedal in a state of being operated; an instruction device that instructs lock and unlock of the travel pedal by the locking device upon an operation by an operator; a first detection device that detects a first signal change according to an unlock operation which is an operation that reflects an intention of an operator to release the locking device and is other than an unlock operation by the instruction device; a second detection device that detects a second signal change according to an unlock operation which is an operation that reflects an intention of an operator to release the locking device and is other than the unlock operation by the instruction device, with the second signal change being different from the first signal change; and a lock control device that unlocks the locking device when an unlock operation is detected by at least one of the first detection device and the second detection device in a state where the travel pedal is locked by the locking device. | 10-28-2010 |
| 20100269494 | EXHAUST GAS TREATMENT APPARATUS - An hydraulic excavator is provided with an exhaust gas treatment apparatus in an exhaust pipe for effecting the purification treatment of exhaust gas including capturing the particulate matter in the exhaust gas. A space provided for mounting and removing a filter accommodating cylinder ( | 10-28-2010 |
| 20100266458 | Construction Machine - Provided is a construction machine, which can suppress a rise in the temperature of a liquid reducing agent in a liquid reducing agent tank. The construction machine is provided, within an engine compartment | 10-21-2010 |
| 20100262353 | Engine Control Device for Working Vehicle - There are provided: a pedal operation amount detection unit | 10-14-2010 |
| 20100252670 | CRUSHER - A crusher is provided that can quickly return to the operating state from a shutdown state which occurs due to the incorporation of a foreign object. Provided are a crushing rotor | 10-07-2010 |
| 20100242313 | CONSTRUCTION MACHINE - An intermediate plate member ( | 09-30-2010 |
| 20100236855 | CONSTRUCTION MACHINE - A machine room ( | 09-23-2010 |
| 20100236642 | CONSTRUCTION MACHINE - A hose looping supporter ( | 09-23-2010 |
| 20100222951 | DRIVE SYSTEM FOR ELECTRICALLY DRIVEN DUMP TRUCK - Engine driving characteristics are achieved for driving a hydraulic system during non-traveling and traveling in an electrically driven dump truck. | 09-02-2010 |
| 20100219008 | CONSTRUCTION MACHINE - In a heat exchanger cover ( | 09-02-2010 |
| 20100218494 | Pump Control Apparatus for Hydraulic Work Machine, Pump Control Method and Construction Machine - A pump control apparatus for a hydraulic work machine includes: a rotation speed setting device that sets a target rotation speed for an engine; a rotation speed control device that controls an engine rotation speed so as to adjust the engine rotation speed to the target rotation speed; a first variable hydraulic pump used to drive a work hydraulic actuator, driven by the engine; a second variable hydraulic pump used to drive a cooling fan, driven by the engine; and a pump control device that controls an output flow rate of the first variable hydraulic pump and an output flow rate of the second variable hydraulic pump so as to ensure that a sum of an intake torque of the first variable hydraulic pump and an intake torque of the second variable hydraulic pump does not exceed an engine output torque determined in advance based upon the target rotation speed. The pump control device a) controls the output flow rate of the second variable hydraulic pump based upon the target rotation speed and a target output flow rate of the second variable hydraulic pump assuring a required cooling air volume at the cooling fan; and b) regulates the intake torque of the first variable hydraulic pump by calculating the intake torque of the second variable hydraulic pump and subtracting the intake torque of the second variable hydraulic pump from the engine output torque determined in advance based upon the target rotation speed. | 09-02-2010 |
| 20100217492 | Pedal Lock Control Device for Work Vehicle - A pedal lock control device for work vehicle includes: a motor driving device that drives a travel hydraulic motor according to an operation amount of a travel pedal; a locking device that locks the travel pedal in a state of being operated; an instruction device that instructs lock and unlock of the travel pedal by the locking device upon an operation by an operator; a lock intention detection device that detects an intention of an operator to permit lock of the travel pedal; and a lock control device that locks the travel pedal by the locking device when an intention of the operator to permit lock is detected by the lock intention detection device and lock of the travel pedal is instructed by the instruction device. | 08-26-2010 |
| 20100212297 | Construction Machine - [Problem] To provide a construction machine capable of realizing with fewer components temperature control of a reducing agent in a reducing agent tank without arranging any heat exchanger in the reducing agent tank. | 08-26-2010 |
| 20100209181 | Two-Member Connection Structure for Working Machine - [Problem] To provide a two-member connection structure for a working machine, which can hold outboard members and their corresponding inboard members for relative pivotal movement without arrangement of stoppers for restricting rotation of flange portions and a connector pin. | 08-19-2010 |
| 20100191417 | TRAVEL DRIVE APPARATUS FOR A WORKING VEHICLE - When the drive of a lubricant pump ( | 07-29-2010 |
| 20100187044 | TRAVEL DRIVE APPARATUS FOR A WORKING VEHICLE - In case a temperature (T) of a lubricant oil (G) cannot be detected by an oil temperature sensor ( | 07-29-2010 |
| 20100187043 | LUBRICATING OIL COOLING DEVICE FOR TRAVELING SPEED REDUCTION GEAR - The present invention provides a traveling speed reduction gear lubricating oil cooling device that enables optimal temperature control for lubricating oil delivered via a lubricating oil pump that can be started up with a relatively small motor without running the risk of damage to an oil cooler in a cold work environment even when a temperature sensor that detects the temperature of the lubricating oil is installed outside a wheel mounting sleeve. During a startup operation, provided that the detected temperature at a traveling motor is higher than the reference temperature, the lubricating oil pump is driven at a speed in a lower speed range relative to the normal operation speed range. In addition, during the startup operation, the rotation speed of the drive motor for the lubricating oil pump is increased in correspondence to a rise in the temperature detected by a lubricating oil temperature detection sensor. | 07-29-2010 |
| 20100187042 | LUBRICATING OIL COOLING DEVICE FOR TRAVELING SPEED REDUCTION GEAR - A traveling speed reduction gear lubricating oil cooling device has a temperature sensor for detecting the temperature of lubricating oil to be installed outside a wheel mounting sleeve without running the risk of damage to a lubricating oil pump in a cold work environment. A startup operation reference speed lower than a reference speed for normal operation is set so as to ensure that air intake does not occur. A startup operation comparison device compares the speed detected by a speed sensor with the startup operation reference speed. If the detected speed is lower than the startup operation reference speed, a drive motor for the lubricating oil pump is engaged in operation at a speed lower than a normal operation speed. If the detected speed is higher than the startup operation reference speed, the drive motor for the lubricating oil pump is turned off. | 07-29-2010 |
| 20100186402 | PUMP TORQUE CONTROL SYSTEM FOR HYDRAULIC CONSTRUCTION MACHINE - A pump torque control system is capable of preventing hunting due to interference between speed sensing control and control of an engine speed of a prime mover when the temperature of a hydraulic fluid is low. | 07-29-2010 |
| 20100176108 | WELDING METHOD FOR T-JOINT - In a plate assembling step, a gap ( | 07-15-2010 |
| 20100170227 | EXHAUST GAS CLEANING SYSTEM FOR ENGINEERING VEHICLE - An exhaust gas cleaning system for an engineering vehicle, such as a hydraulic excavator, is capable of performing manual regeneration control of a regeneration fuel injector | 07-08-2010 |
| 20100162696 | Hydraulic Drive Device for Large Hydraulic Excavator - [Problem] To provide a large hydraulic excavator permitting an easy change from a machine mode corresponding to a backhoe excavator to a machine mode corresponding to a loader excavator, and vice versa. | 07-01-2010 |
| 20100140020 | TRAVELING DRIVE UNIT FOR WORKING VEHICLE - A lubricant circulation pump ( | 06-10-2010 |
| 20100139255 | Construction Machine - [PROBLEM] To provide a construction machine capable of performing necessary operation or operations without a difficulty even when a remaining amount of a reducing agent becomes small. | 06-10-2010 |
| 20100138758 | ON-SITE SYSTEM BUILDING SUPPORT TOOL - An on-site system building support tool for assisting a user in building an on-site system by displaying a layout creation screen having an icon area for displaying icons, each of which represents any of various kinds of machines that can be used, and a canvas area in which a virtual system is built. The icons are displayed in the canvas area and connected to each other through an association. A model setting screen is used to display the icons, and on the basis of setting conditions displayed on the model setting screen, a load on the virtual system built on the canvas area is calculated and displayed which applies to the environment. This enables checking of an environmental load on the basis of various kinds of conditions of the site. | 06-03-2010 |
| 20100138118 | TRAVELING SYSTEM FOR ENGINEERING MACHINE - This invention provides a traveling system for an engineering machine, adapted to limit a maximum traveling speed of the machine without causing decreases in engineering work efficiency or in accelerating performance during a start of traveling, and to improve fuel efficiency by suppressing a loss of engine output horsepower under the limited state of the maximum traveling speed. | 06-03-2010 |
| 20100122522 | EXHAUST GAS PURIFICATION SYSTEM FOR ENGINEERING MACHINE - An exhaust gas purification system for an engineering machine is capable of avoiding decreases in working efficiency during regeneration control by burning off a deposit of particulate matter from a filter efficiently during a work pause time. An operating section | 05-20-2010 |
| 20100119184 | Travel Assembly - A travel assembly is provided with a cylindrical spindle for being fixed on a body of a working vehicle, a rotary shaft arranged extending in an axial direction through the spindle and rotationally drivable by a driving source, a rim rotatably arranged on a side of an outer periphery of the spindle to permit mounting of a wheel thereon, a planetary gear reduction mechanism for transmitting rotation of the rotary shaft to the rim at a reduced speed, a bearing rotatably supporting the rotary shaft via a sleeve integrally fitted on the rotary shaft, and a retainer holding the bearing in place. A lube oil pipe for feeding lube oil to the rotary shaft is held in place by the retainer. The lube oil pipe branches within the retainer to form an oil passage. The oil passage has an opening through which the lube oil can be fed to rolling elements in the bearing. | 05-13-2010 |
| 20100106382 | Prime Mover Rotation Speed Control System for Hydraulically Driven Vehicle - A prime mover rotation speed control system for hydraulically driven vehicle includes: a hydraulic pump driven by a prime mover; a hydraulic motor for traveling driven with pressure oil supplied from the hydraulic pump; an operation member that outputs a travel command in accordance with an amount of operation by the operation member; a flow control device that controls one of a flow of the pressure oil from the hydraulic pump to the hydraulic motor and a flow rate of the pressure oil discharged from the hydraulic motor, based on the travel command that is output in accordance with the amount of operation by the operation member; a target rotation number outputting device that outputs a target rotation number of the prime mover based on a command; a rotation number control device that controls a rotation number of the prime mover to be the target rotation number; a vehicle speed detection device that detects a vehicle speed; and a vehicle speed calculation device that calculates a target vehicle speed in accordance with the amount of operation by the operation member. The rotation number control device includes a correction device that adjusts the target rotation number based on the vehicle speed detected by the vehicle speed detection device and the target vehicle speed calculated by the vehicle speed calculation device. | 04-29-2010 |
| 20100102594 | CONSTRUCTION MACHINE - A seat support platform ( | 04-29-2010 |
| 20100101888 | Steering Device For Construction Vehicle - [Problem] To provide a steering system for a construction vehicle, which is suited not only for traveling on general roadways but also for work at construction sites and can perform high-reliability steering control. | 04-29-2010 |
| 20100096921 | Power Supply Device and Construction Machine - A power supply device comprises a bidirectional voltage converter unit that performs voltage stepping up or voltage stepping down between a first terminal and a second terminal; a first switching unit that applies a DC voltage obtained from the first electric power supply source to the first terminal; a second switching unit that applies a DC voltage obtained from the second electric power supply source to the first terminal; a third switching unit that applies a DC voltage obtained from the first electric power supply source to the second terminal; an output unit that outputs a predetermined DC voltage from the second terminal; and a switching control unit that controls switching of the first switching unit, the second switching unit and the third switching unit. | 04-22-2010 |
| 20100095664 | HST Cooling Circuit - There are provided: an HST hydraulic circuit that is formed through a closed circuit connection of a variable displacement hydraulic pump | 04-22-2010 |
| 20100095663 | Travel Control Apparatus for Working Vehicle - There are provided: a first circuit for traveling HC | 04-22-2010 |
| 20100095656 | EXHAUST GAS CLEANING SYSTEM FOR CONSTRUCTION MACHINE - Before a large amount of PM is deposited in a filter, an exhaust gas cleaning system for a construction machine regenerates the filter. | 04-22-2010 |
| 20100089035 | EXHAUST GAS CLEANING SYSTEM FOR CONSTRUCTION MACHINE - Before a large amount of PM is deposited in a filter | 04-15-2010 |
| 20100076652 | Speed Change Control System For Industrial Vehicle - A speed change control system for industrial vehicle, includes: a speed ratio detecting unit that detects a speed ratio of speeds of an input shaft and of an output shaft of a torque converter; speed changer for operating based on the torque converter speed ratio that shifts up or down a speed stage of a transmission in response to the detected speed ratio; a braking detection unit that detects an operation of a braking device for traveling; and a downshift limit unit that permits a downshift to a 1st speed by the speed changer when a non-operation of the braking device is detected by the braking detection unit and limits a lowest speed stage upon downshift by the speed changer to a 2nd speed when an operation of the braking device is detected. | 03-25-2010 |
| 20100074697 | SOIL IMPROVEMENT AGENT SUPPLY APPARATUS - The soil improvement agent supply apparatus, includes a storage tank for storing the soil improvement agent, a feeder for adding the soil improvement agent in the storage tank to the soil, an arch breaker for stirring the soil improvement agent in the storage tank, a load detector for detecting the drive load on the feeder, a memory unit for storing the relationship between the drive load on the feeder and the drive speed of the arch breaker, and a computing unit for controlling the drive speed of the arch breaker in accordance with a signal from the load detector and information stored in the memory unit. The soil improvement agent supply apparatus increases a speed command value for the arch breaker when the drive load on the feeder decreases, and decreases the speed command value for the arch breaker when the drive load on the feeder increases. | 03-25-2010 |
| 20100071987 | Speed Change Control System for Industrial Vehicle - A speed change control system for an industrial vehicle includes: a speed ratio detecting unit that detects a speed ratio of speeds of an input shaft and of an output shaft of a torque converter; a torque converter speed ratio-based speed changer that shifts up or shifts down a speed stage of a transmission | 03-25-2010 |
| 20100070130 | APPARATUS AND SYSTEM FOR DIAGNOSING DEVICES INCLUDED IN WORKING MACHINE - A device diagnostic apparatus ( | 03-18-2010 |
| 20100069199 | Gearshift Controller for Industrial Vehicle - A gearshift controller for an industrial vehicle, includes: a speed ratio detection unit that detects a speed ratio of speeds of an input axis and of an output axis of a torque converter; a gearshift control unit that shifts up a speed stage when the detected speed ratio is equal to or more than a first predetermined value and shifts down the speed stage when the detected speed ratio is equal to or less than a second predetermined value, which is smaller than the first predetermined value; and an operation member with which a downshift to the first speed is instructed by operation thereof by an operator. When the downshift is instructed by the operation member, the gearshift control unit controls the speed stage to be kept at the first speed for a predetermined time period regardless of the speed ratio detected by the speed ratio detection unit. | 03-18-2010 |
| 20100058743 | EXHAUST GAS CLEANING SYSTEM FOR DIESEL ENGINE - Each time a starting process for a diesel engine | 03-11-2010 |
| 20100052409 | TRANSPORTATION VEHICLE - An outside diameter of a rim spacer of a vehicle wheel is formed with an equal outside diameter dimension to those of fringe portions and of an outer rim making it possible to prevent a step from being produced between the fringe portion of the outer rim and the rim spacer. An abutment portion of an inner rim has an outside diameter formed with an equivalent diameter to the outside diameter of the rim spacer to prevent a step from being produced therebetween. This prevents an inner tire from being inclined diagonally between the inner rim and the rim spacer and also prevents a bead seat band and the like of the inner tire from being caught between the outer rim and the rim spacer. | 03-04-2010 |
| 20100051376 | Bending Construction Vehicle - [Problem] To provide an articulated vehicle which permits steering control not only suited for traveling on general roadways but also suited for work at construction sites. | 03-04-2010 |
| 20100051359 | DUMP TRUCK - An electrically-driven dump truck | 03-04-2010 |
| 20100050601 | EXHAUST GAS PURIFIER OF CONSTRUCTION MACHINE - [PROBLEM] To provide an exhaust gas purification system suitable for a construction machine provided with a hydraulic pump driven by an engine. | 03-04-2010 |
| 20100043108 | PROBE FOR SCANNING PROBE MICROSCOPE - In a tip having a carbon nanotube tip used to a scanning probe microscope, its length of the tip is adjusted in a several order of 10 nm and the tip maintains cylindrical shape up to the extremity portion. | 02-18-2010 |
| 20100038162 | AUTOMOTIVE CONSTRUCTION MACHINE - A ureal water tank ( | 02-18-2010 |
| 20100032219 | Travel Drive System for Work Vehicle, Work Vehicle, and Travel Drive Method - A travel drive system for a work vehicle includes: an HST drive device comprising a hydraulic pump driven by a prime mover and a hydraulic motor connected to the hydraulic pump by a closed circuit; an electric motor driven by using electric power generated by drive of the prime mover; a first drive wheel driven by the HST drive device; a second drive wheel driven by the electric motor; a vehicle speed detector that detects a vehicle speed; and a control unit that distributes output of the prime mover to the HST drive device and to the electric motor such that, as the vehicle speed detected by the vehicle speed detector increases, a proportion of a first power distributed to the HST drive device decreases and a proportion of a second power distributed to the electric motor increases. | 02-11-2010 |
| 20100026079 | TRANSPORTER VEHICLE - Detection signals from lever sensor ( | 02-04-2010 |
| 20100025136 | CONSTRUCTION MACHINE - A counterweight ( | 02-04-2010 |
| 20100024412 | Control Apparatus for Working Vehicle - There are provided: a travel circuit HC | 02-04-2010 |
| 20100017076 | Automatic Transmission Device For Wheel Loader And Wheel Loader - An automatic transmission device for a wheel loader includes: a shift mechanism; a work detection device that detects that the wheel loader is performing an excavation work; and a shift control device that executes control so as to downshift a speed stage at the shift mechanism if the work detection device detects that the wheel loader is performing the excavation work. | 01-21-2010 |
| 20100016123 | Control System for Work Vehicle - A control system for a work vehicle includes; a negative-type parking brake device that starts operating in response to a parking brake instruction; an output device that outputs the parking brake instruction; a service brake device that operates in response to an operation of a brake pedal by an operator; and a brake control device that operates the service brake device regardless of a pedal operation by the operator when the parking brake instruction is output from the output device. | 01-21-2010 |
| 20100011757 | Safety Device for Hydraulic Working Machine - There are provided: control valves | 01-21-2010 |
| 20100001573 | TRANSPORTER VEHICLE - An upper cross beam | 01-07-2010 |
| 20090312922 | Clutch control device and clutch control method - A clutch control device includes: a plurality of hydraulic clutches built into a transmission; a clutch switching pattern storage device in which a plurality of clutch switching patterns, each defining engage/release changeover timing with which the plurality of hydraulic clutches are engaged/released are stored in correspondence to individual speed change patterns adopted by the transmission; a clutch switching pattern selection device that selects a clutch switching pattern stored in the clutch switching pattern storage device in correspondence to a speed change pattern for the transmission at a time of speed change; and a hydraulic control device that executes hydraulic control for the plurality of hydraulic clutches in correspondence to the clutch switching pattern selected by the clutch switching pattern selection device. | 12-17-2009 |
| 20090312135 | Travel Assembly for Dump Truck - Wheels of a dump truck are each provided with a travel assembly for transmitting an output of an electric motor to the wheel via a reduction gear unit. The travel assembly is provided with a cooling circuit for cooling lube oil. The cooling circuit has an oil cooler and a recovery oil passage for guiding lube oil from a side of the gear unit to the cooler. The recovery oil passage has an intra-spindle recovery line inserted on a side of an inner periphery of a spindle, a suction pipe extending from the recovery line to a space surrounded by the spindle, the wheel and two spindle-supporting bearings, and communication holes formed in the wheel to communicate the side of the reduction gear unit with the space. | 12-17-2009 |
| 20090252549 | Spline Connection Structure - A spline connection structure is provided with a shaft spline and a bore spline. The shaft spline is comprised of plural involute teeth formed on a shaft, while the bore spline is comprised of plural involute teeth formed on a hub and maintained in engagement with the teeth of the shaft spline. The hub is provided with at least one cylindrical hole and a thin wall portion facing a lower end portion of the cylindrical hole. The thin wall portion is pressed by a pressing member inserted in the cylindrical hole to widen an interval between at least two of the teeth of the bore spline, said at least two teeth being located in a vicinity of the thin wall portion, such that at least one of the at least two teeth is pressed against at least one associated tooth of the teeth of the shaft spline and is restrained to restrict movement of the hub relative to the shaft. At least one tooth of at least one of the shaft spline and bore spline, said at least one tooth being located in a vicinity of the thin wall portion, is provided with a cutout portion formed by cutting off the at least one tooth at a part thereof such that the cutout portion is located in a neighborhood of an end face of the hub located on a side opposite another end face of the hub located on a side of an end portion of the shaft. | 10-08-2009 |
| 20090238696 | TRAVELING CONTROL APPARATUS FOR HYDRAULIC TRAVELING VEHICLE - A rotational speed pickup | 09-24-2009 |
| 20090217656 | Hydraulically Driven Industrial Machine - A hydraulically driven industrial machine has a variable displacement hydraulic pump for pressurizing hydraulic oil from a hydraulic oil tank; a actuator driven and controlled by oil that is discharged from the hydraulic pump and is supplied through a controlled valve and performing predetermined work; cooling means with a variable cooling rate function, the cooling means cooling return oil from the actuator and varying the rate of cooling of the return oil; load detection means for detecting work load by the actuator; and control means for varying the rate of cooling of the return oil according to the work load detected by the load detection means. | 09-03-2009 |
| 20090215569 | Travel Assembly - A travel assembly, for example, suited for arrangement on a vehicle such as a mining dump truck, is provided with a travel motor, a planetary speed reduction mechanism for transmitting rotation of the travel motor at a lower rotational speed, a spindle forming an axle, and a wheel supported on the spindle via a tapered roller bearing and rotatable by the planetary speed reduction mechanism. The planetary speed reduction mechanism includes a sun gear rotatable by rotation of a shaft of the travel motor, planet gears for rotating the wheel in response to rotation of the sun gear, and a carrier for holding the planet gears. The travel assembly is provided with a spline connection connecting the spindle and the carrier with each other and an oil passage for guiding internal lube oil of the planetary speed reduction mechanism to the spline connection. | 08-27-2009 |
| 20090215568 | Travel Assembly - A travel assembly, for example, suited for arrangement on a vehicle such as a mining dump truck, is provided with a travel motor, a planetary speed reduction mechanism for transmitting rotation of the travel motor at a lower rotational speed, a spindle forming an axle, and a wheel supported on the spindle via a tapered roller bearing and rotatable by the planetary speed reduction mechanism. The planetary speed reduction mechanism includes a sun gear rotatable by rotation of a shaft of the travel motor, planet gears for rotating the wheel in response to rotation of the sun gear, stepped pins forming rotary shafts for the planet gears, a carrier for holding the stepped pins thereon, and bolts for fixedly securing the stepped pins on the carrier. The travel assembly is provided with a spline connection connecting the spindle and the carrier with each other and a limiting member for limiting movements of the bolts in a direction toward the tapered roller bearing. | 08-27-2009 |
| 20090199552 | HYDRAULIC WORKING MACHINE - A hydraulic circuit for a hydraulic working machine is composed of a main pump | 08-13-2009 |
| 20090145121 | Hydraulic Drive Device for Dump Truck - [OBJECT] To provide a hydraulic drive system for a dump truck, which can prevent an excessive increase in engine rotation speed upon operation of a truck body. | 06-11-2009 |
| 20090126361 | Pump Torque Controller of Hydraulic Working Machine - [Object] To permit an precise and easy adjustment of a pump absorption torque of a main pump in accordance with environmental conditions or the like when a sub-pump different in characteristics from the main pump is connected to a prime mover. | 05-21-2009 |
| 20090113887 | Hydraulic Drive Device - To permit driving a tilt cylinder and an angle cylinder at relatively low speed and also to permit driving an additional actuator at high speed. | 05-07-2009 |
| 20090093340 | Shift Control Device for Work Vehicle - A shift control device for a work vehicle that has a stepped automatic transmission includes: a control device that controls an engine rotation rate at the work vehicle and the stepped automatic transmission; a forward/reverse switchover member that outputs a forward/reverse switchover command for the work vehicle; and an operation quantity detection device that detects an accelerator pedal operation quantity in the work vehicle is operated. As the forward/reverse switchover command is output via the forward/reverse switchover member, the control device executes forward/reverse switchover control for the stepped automatic transmission and also controls the engine rotation rate so as to decrease the engine rotation rate gradually to a target lower limit value selected to ensure that a reverse rotation of a turbine runner at a torque converter in the work vehicle does not occur. | 04-09-2009 |
| 20090090103 | Hydraulic Drive Device - A hydraulic drive system is provided with a front casing | 04-09-2009 |
| 20080303342 | Work Vehicle Control Device - The present invention includes a hydraulic brake device | 12-11-2008 |
| 20080271564 | Hydraulic Power Transmission Device and Work Vehicle - A hydraulic power transmission device in a work vehicle transmits motive power from two hydraulic motors disposed in parallel to each other. The hydraulic power transmission device includes: a case; a first motor shaft and a second motor shaft respectively disposed in a right-side area and in a left-side area inside the case, each linked to one of the two hydraulic motors; a counter shaft disposed in an area ranging between the first motor shaft and the second motor shaft in the case; an output shaft; a first transmission mechanism that transmits motive power from the first motor shaft to the output shaft via the counter shaft; a second transmission mechanism that transmits motive power from the second motor shaft to the output shaft; and a hydraulic clutch device disposed at the counter shaft, that transmits the motive power from the first motor shaft to the output shaft or cuts off transmission of the motive power. | 11-06-2008 |
| 20080254939 | Engine Control Device for Work - An engine control device for a work vehicle includes: a hydraulic pump | 10-16-2008 |
| 20080245065 | Control System for Hydraulic Construction Machine - A computing section computes a reference revolution-speed decrease modification amount DNLR; and multiplies an engine revolution speed modification gain KNL by a reference revolution-speed decrease modification amount DNL and then DNLR, to thereby compute an engine revolution-speed decrease modification amount DND based on input change of an operation pilot pressure, which is modified in accordance with DNLR. At the time when a lever operation input from an operation command unit is changed from full stroke to half stroke, if a pump delivery pressure is in a pressure range of a pump absorption torque control region Y where the pump delivery pressure is lower than that in a region X, the reference revolution-speed decrease modification amount computing section | 10-09-2008 |
| 20080236157 | Engine Lag Down Suppressing Device of Construction Machinery - An engine lag down suppressing device of construction machinery, comprising a vehicle body controller ( | 10-02-2008 |
| 20080223205 | Hydraulic Drive Apparatus - A hydraulic drive system is mounted on a hydraulic excavator, and is provided with a directional control valve | 09-18-2008 |
| 20080209903 | Hydraulic Drive Device for Working Vehicle - [Object] To materialize a reduction in pump loss, the assurance of sufficient working device speeds and the priority assurance of an adequate steering capacity with simpler construction and at lower cost than a load sensing system. | 09-04-2008 |
