Patent application number | Description | Published |
20100102594 | CONSTRUCTION MACHINE - A seat support platform ( | 04-29-2010 |
20120186889 | HYBRID CONSTRUCTION MACHINE - Provided is a hybrid construction machine capable of facilitating the hybridization (conversion, redesigning, etc. into a hybrid construction machine) even for construction machines of the minimal tail swing radius type or the minimal swing radius type. A hybrid mini-shovel of the minimal tail swing radius type comprises an engine, a hydraulic pump whose input shaft is coaxially connected to the output shaft of the engine, a generator/motor whose rotating shaft is connected to the output shaft of the engine and the input shaft of the hydraulic pump via a gear mechanism, and a battery which receives and supplies electric power from/to the generator/motor. The generator/motor is placed at a vertical position where its lower end is situated above the shaft center of the input shaft of the hydraulic pump, and when viewed from above at a horizontal position where it overlaps with the hydraulic pump. | 07-26-2012 |
20130011232 | CONSTRUCTION MACHINE - An upper revolving structure is provided on a lower traveling structure, and a floor member and a cab box are provided on a revolving frame of the upper revolving structure. A rear side of the floor member serves as an operator's seat mounting section, and a front side thereof serves as a footrest section, a front side thereof being formed as a lever/pedal mounting section. The footrest section is constituted by a flat operator's seat front plate which is provided on a front side of the operator's seat, a downward plate which is set downward from a left side end portion of the operator's seat front plate on a left side of the cab box, and a flat footstep plate which extends toward a door on which the operator puts his or her foot when getting into or out of an operating room. | 01-10-2013 |
20130017048 | CONSTRUCTION MACHINEAANM Kimura; ShougoAACI Ritto-shiAACO JPAAGP Kimura; Shougo Ritto-shi JPAANM Ishii; HajimeAACI Higashiomi-shiAACO JPAAGP Ishii; Hajime Higashiomi-shi JPAANM Tabeta; HiroshiAACI Konan-shiAACO JPAAGP Tabeta; Hiroshi Konan-shi JP - A suction duct ( | 01-17-2013 |
20130152573 | HYBRID SYSTEM FOR CONSTRUCTION MACHINE - When the actuator drive torque of a hydraulic pump is lower than a switching torque τ0, a controller closes a solenoid switching valve and makes a rotary electric machine function as a generator. With the increase in the actuator drive torque, the controller controls a pressure compensated flow control valve so that the flow rate of hydraulic fluid supplied from the hydraulic pump to a rotary hydraulic device decreases. When the actuator drive torque is higher than the switching torque, the controller opens the solenoid switching valve, makes the rotary electric machine function as an electric motor, and controls the pressure compensated flow control valve so that the hydraulic fluid discharged by the hydraulic pump is not supplied to the rotary hydraulic device. Consequently, shocks due to flow rate fluctuation are prevented when operational states of the rotary hydraulic device and the rotary electric machine are switched. | 06-20-2013 |
20130236281 | CONSTRUCTION MACHINE - An upper revolving structure ( | 09-12-2013 |
20140008140 | CONSTRUCTION MACHINE - A regeneration apparatus for executing a regeneration process to an exhaust gas purifying apparatus and an engine control device that controls a rotational speed of an engine according to an instruction value by a rotational speed instruction apparatus are provided. When a directional control valve is in a neutral position, the engine control device controls the rotational speed of the engine to an automatic idle rotational speed (Nai) by an automatic idle selection unit regardless of the instruction value. However, when it is determined that the regeneration process of the exhaust gas purifying apparatus is executed in a state of controlling the rotational speed of the engine at the automatic idle rotational speed (Nai), the engine control device increases the rotational speed of the engine to a regeneration processing rotational speed (N1) higher than the automatic idle rotational speed (Nai). | 01-09-2014 |
20140116031 | ENGINE CONTROL SYSTEM FOR WORKING MACHINE - An engine control system for a working machine measures the sulfur content of an exhaust gas since sulfur is detrimental to normal functioning of an exhaust gas aftertreatment device. Each time a key switch is turned ON to start an engine, the engine control system compares a remaining fuel amount memorized at the last stop of the engine and a remaining fuel amount detected at the current start of the engine. The engine control system performs a sulfur concentration measurement process only when the remaining fuel amount is increased. A target revolution speed Na appropriate for measuring the concentration of sulfur is set and when the temperature of the exhaust gas is within a predetermined temperature range and a target time has elapsed, the engine control system determines whether the sulfur concentration exceeds a threshold value. If the sulfur concentration exceeds the threshold value, an alarm display device is activated. | 05-01-2014 |
20140138177 | CONSTRUCTION MACHINE - An engine ( | 05-22-2014 |
20140251146 | CONSTRUCTION MACHINE - A regeneration device performs regeneration of a filter by burning particulate matter trapped by the filter of an exhaust gas purifying device. The regeneration device is configured to perform two types of processing, that is, automatic regeneration processing for automatically performing regeneration not on the basis of an operation by an operator and manual regeneration processing for performing regeneration by notifying an operator to manually perform the regeneration and by performing the regeneration on the basis of an operation by the operator. The automatic regeneration processing makes determination on whether or not to perform regeneration on the basis of an estimated trapping amount (H) estimated from an engine rotational speed (N) and a fuel injection quantity (F). The manual regeneration processing makes determination on whether or not to notify the operator on the basis of a differential pressure (ΔP) of the particulate matter removing filter. | 09-11-2014 |
20140290237 | CONSTRUCTION MACHINE - A control pressure switching valve is disposed between a displacement regulator and a pressure control valve. The control pressure switching valve is switched between a control position (j), in which a load sensing control pressure (PLS) is permitted to be outputted from the pressure control valve to the displacement regulator, and a control release position (k), in which the load sensing control pressure (PLS) to be outputted to the displacement regulator is reduced to a prescribed low pressure value. When the regeneration of a filter is determined to be necessary, the controller switches the control pressure switching valve to the control release position (k). When the load sensing control pressure (PLS) is reduced to the low pressure value with the control pressure switching valve switched to the control release position (k), the displacement regulator increases a delivery displacement of a hydraulic pump, thereby increasing rotational load of an engine. | 10-02-2014 |