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WO/2016/038921A1 |
The present invention mitigates the reduction in hydraulic actuator speed due to linked operation while reducing loss due to split flow. A hydraulic control device for a work machine having a first hydraulic actuator (6), a hydraulic pum...
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WO/2016/040484A1 |
A hydraulic system (14) is disclosed for assisting starting of a machine (10) having an engine (59). The hydraulic system may include a work tool (16), a pump (58) driven by the engine to pressurize fluid, and an actuator (49) configured...
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WO/2016/038162A1 |
A three-position booster valve mechanism comprises an operating member (25) for moving a supply and exhaust valve (8, 10). A piston-cylinder control system (20) is provided for moving the operating member between a first position in whic...
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WO/2016/031711A1 |
This piping 2 is for use in a pneumatic system. At least one part 6 of the pipe interior 4 of the piping 2 is filled with a metal wire 8. At least the one part 6 may be an end section of the piping 2.
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WO/2016/027463A1 |
This hydraulic pump drive system assists an engine by controlling an electric motor using a control device, and rotating and driving the rotating shaft of a hydraulic pump. The control device calculates a target fuel injection amount usi...
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WO/2016/023569A1 |
The invention relates to an actuator controller for actuating an actuator (2) which can be operated fluidically, having a feed line (45) for an inflow of the working fluid to an actuator connector (5, 6) and having a discharge line (47) ...
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WO/2016/017377A1 |
Provided is a speed controller capable of controlling the operating speed of an external cylinder in a single stroke in a step-wise fashion. The speed controller (1) is provided with a first flow channel (16) and a second flow channel (1...
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WO/2016/017209A1 |
A working machine is configured so that pilot oil supplied to a variable displacement pump is directly controlled to improve heat balance. A working machine (1) is provided with: an engine (15); a pilot pump (P3) for discharging pilot oi...
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WO/2016/009369A2 |
Hydraulic system, distributor and bidirectional valve to activate the hydraulic actuators (3; 3a, 3b) of an operating machine; the hydraulic system (1) having: a first high-pressure oil delivery (4); an oil drain (8); a slide valve with ...
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WO/2016/006716A1 |
A work vehicle (1), provided with a vehicle body (2), a boom (2), a bucket (32), a boom-driving part having a boom cylinder (36), a bucket-driving part for turning the bucket (32), a boom bottom pressure sensor (460) for detecting the bo...
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WO/2016/002850A1 |
The rotating body (3) of a shovel is rotationally driven by a hydraulic motor (21B) for rotation, which is driven by pressurized oil supplied from a hydraulic pump (14). A hydraulic cylinder (7) is driven by pressurized oil supplied from...
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WO/2016/002392A1 |
A recycle passage (71) performs "recycling of pressure oil" to supply boom discharged oil (35Fo) (discharged oil to be recycled) discharged from a boom cylinder (23F) (recycling actuator) to the boom cylinder (23F) (an actuator that is o...
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WO/2015/197191A1 |
The invention relates to a control device for at least one fluidically actuatable actuator (10) having at least two working chambers (14, 16) which are separated from one another, which adopt different pressure levels depending on a load...
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WO/2015/198868A1 |
In the present invention, a hydraulic drive device of a construction machine is configured such that a traveling motor (3f, 3g) is operated, and when the discharge pressure of a main pump (2) increases to a second value (PS2) for the set...
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WO/2015/195246A1 |
An electro-hydraulic actuation system includes a regeneration valve in fluid communication with a first fluid chamber and a second fluid chamber of a hydraulic actuator, and a dump valve is in fluid communication with the second fluid ch...
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WO/2015/195131A1 |
A zoned fluid control system in a valve manifold system has a plurality of manifold blocks connected together and a plurality of control valves mounted to the manifold blocks with the control valves being electrically actuated and pilot ...
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WO/2015/195029A1 |
The present invention regards a fluid actuator arrangement (1) comprising a first (3) and second (5) cylinder of a cylinder arrangement (7), a piston rod arrangement (9), a first (11) and second (13) piston device associated with the pis...
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WO/2015/195008A1 |
The present invention regards a fluid actuator arrangement (1) comprising a first (3) and second (5) cylinder of a cylinder arrangement (7), a piston rod arrangement (9), a first (11) and second (13) piston device associated with the pis...
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WO/2015/190135A1 |
Provided is an operation machine with which it is possible to regenerate and use surplus energy. The operation machine according to the present invention has a branching flow channel (150) through which working oil flows between a hydrau...
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WO/2015/190972A1 |
Hydraulic cylinder (1) comprised of a cylinder housing (2), with a cylindrical inner space, and in that at least one movably arranged first piston (3) which partitions the hydraulic cylinder into at least one first chamber (9) and at lea...
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WO/2015/185644A1 |
The invention relates to a hydraulic drive (1) comprising a working cylinder (2) and a travel cylinder (3) which is mechanically connected to the working cylinder (2). The working cylinder (2) and the travel cylinder (3) each comprise an...
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WO/2015/186754A1 |
A fluid pressure system (100) is provided with: a first fluid pressure pump (11) for discharging an actuating fluid used for actuating fluid pressure actuators (1-4); a second fluid pressure pump (12) provided in parallel with the first ...
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WO/2015/186414A1 |
The purpose of the present invention is to provide a hydraulic shovel: with which pressure interference during combined operation of a boom cylinder, an arm cylinder and a bucket cylinder can be avoided; which improves usability; and whi...
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WO/2015/182268A1 |
Respective load pressures of actuators (A1, A2) connected to respective compensator valves (C1, C2) are led to respective first pressure chambers (9, 10) of the compensator valves (C1, C2), and the maximum load pressure selected by a sel...
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WO/2015/182216A1 |
To provide a work machine configuration provided with a closed-circuit pump and an open-circuit pump, wherein the pumping operation of each of the closes-circuit pump and the open-circuit pump can be stabilized and ease of mounting the c...
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WO/2015/178317A1 |
A shovel (1) is provided with: a boom cylinder (7) and a bucket cylinder (9) that are driven by hydraulic oil that is discharged by a hydraulic pump (10R); a regenerated oil path that causes hydraulic oil that flows out from the bottom-s...
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WO/2015/178316A1 |
A shovel (1) is provided with: a boom cylinder (7) that receives at least one part of hydraulic oil that is discharged by a hydraulic pump (10R) as pump supply oil; a regenerated oil path (33) that causes at least one part of the hydraul...
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WO/2015/174250A1 |
A fluidic control device (100) is provided with a cylinder (2), a control valve (6), a pilot valve (9), a main passage (7), and a load holding mechanism (20). The load holding mechanism (20) is provided with a check valve (21) and a swit...
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WO/2015/169693A1 |
The invention relates to a screw system for carrying out screwing operations, in particular automatically, with a screwing tool and a feed device having a pneumatic feed cylinder by means of which the screwing tool is movable in a feed d...
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WO/2015/165344A1 |
A rotary hydraulic system and a concrete conveying pump apparatus. The rotary hydraulic system comprises a rotary motor (1) and a throttling device. Two ends of the throttling device are connected to two oil ports of the rotary motor (1)...
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WO/2015/164321A1 |
A hydraulic unit (40) with a manifold (54) having a front face (58) to which a plurality of metering valves (56a-56d) are mounted for convenient access, and the manifold has ports connectable to ports of the hydraulic actuators on surfac...
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WO/2015/162993A1 |
A control valve device is provided with: a valve body having an actuator port connected to an actuator and a relief passage through which the actuator port is communicated with a return passage; a spool through which the actuator port is...
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WO/2015/156029A1 |
A valve structure includes a switching valve and a compensator valve which maintains a constant diversion ratio regardless of variations in the load of an actuator connected to the switching valve, the diversion ratio being determined by...
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WO/2015/151776A1 |
Provided is an oil pressure control device for a work machine with which adequate operability intended by an operator operating a hydraulic actuator can be achieved. The present invention is provided with a controller (20) that has: an e...
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WO/2015/151964A1 |
A valve device is provided with first and second spool valves (V1, V2), and the first and second spool valves (V1, V2) respectively have: spools (2, 4) assembled in bodies (1, 3) in a slidable manner; pilot chambers (6, 40) toward which ...
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WO/2015/151895A1 |
This invention, which improves responsiveness leading up to the actuation of a brake that applies braking to a motor, includes a motor, a brake that applies braking to said motor by reducing oil pressure and releases said breaking by inc...
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WO/2015/146219A1 |
In the present invention, when an optional attachment has not been installed a preliminary flow volume/direction control valve (8) operates as a center bypass cut valve. A switching control is performed such that when the optional attach...
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WO/2015/145946A1 |
A hydraulic shovel drive system includes a cylinder for driving an operating section, which is an arm or a bucket. Operating oil is supplied from a hydraulic pump to the cylinder through a control valve. A relief line is branched from a ...
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WO/2015/146358A1 |
Provided is a hoist device for a dump truck, which is simpler in configuration and less expensive than conventional devices. One three-position switching valve is used as a main control valve (35) for controlling a hoist cylinder (4). A ...
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WO/2015/141073A1 |
The purpose of the present invention is to obtain favorable usability in combined operation of specified actuators, when the difference in load pressure is large and the operating devices of specified actuators are being finely controlle...
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WO/2015/141132A1 |
The operation device (100) is provided with: a pilot valve (3), which has an operation part (2) and is for outputting a pilot pressure corresponding to the amount by which the operation part (2) is operated; and an electric signal-output...
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WO/2015/137177A1 |
A control valve device (100) is provided with a valve block (30) for selecting the direction of flow of operating fluid supplied to and discharged from a boom cylinder (85) and an arm cylinder (75)(which are actuators). The valve block (...
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WO/2015/137329A1 |
A shovel according to an embodiment of the present invention has a first pump (14L) for discharging first working oil, a second pump (14R) for discharging second working oil, a pump/electric motor (14A) for discharging third working oil,...
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WO/2015/131915A1 |
The invention relates to a valve assembly (1) comprising at least one valve control group (2), which has two valve units (3, 4). Each valve unit (3, 4) contains a valve tappet (15, 16), which is arranged in a valve chamber (12, 13) and w...
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WO/2015/125503A1 |
Provided is a construction machine characterized by comprising: a traveling body (10); a rotating body (20) rotatably provided on the traveling body (10); motors (25, 27) for rotation, the motors (25, 27) rotating and driving the rotatin...
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WO/2015/122213A1 |
Provided is a hydraulic drive device for a construction machine with which cavitation can be prevented and regeneration efficiency can be improved. This device is equipped with: a regenerative motor (47) that regenerates energy from oper...
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WO/2015/118752A1 |
The purpose of the present invention is to control overall torque with good precision, by detecting the absorbed torque of a second hydraulic pump with good precision using a purely hydraulic configuration and feeding back same to a firs...
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WO/2015/119175A1 |
The present invention is capable of reducing the cost of a direction-switching valve (a third direction-switching valve), despite having a configuration whereby oil is supplied from two pumps to one actuator (a third actuator). A hydraul...
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WO/2015/117962A1 |
The invention relates to a series hydraulic hybrid system (1) for a vehicle, comprising: a hydraulic circuit (2) comprising a first hydraulic displacement unit (5) in fluid communication with a second hydraulic displacement unit (6), the...
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WO/2015/114954A1 |
A transmission requirement determination unit of this working machine determines a required tractive force on the basis of an accelerator operation amount. A working machine requirement determination unit determines a required flow rate ...
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