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WO/2018/180323A1 |
Provided is a hydraulic drive device for a working vehicle, the hydraulic drive device being configured to reduce impact on an operator who operates an actuator. This hydraulic drive device for a working vehicle comprises: a variable dis...
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WO/2018/179574A1 |
This hydraulic control device comprises a pilot pressure control device (21) that variably controls pilot pressure supplied to a hydraulic pilot part of a directional control valve (14). The pilot pressure control device (21) includes fi...
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WO/2018/179563A1 |
This construction machine is provided with: an over-center type hydraulic pump 2; a hydraulic cylinder 1 that has a cap chamber 1e and a rod chamber 1f; a first flow path 11 which connects the hydraulic pump 2 and the cap chamber 1e; a s...
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WO/2018/178960A1 |
This hydraulic system comprises: an operation device; a control valve that, the larger the operation signal output from the operation device, increases the opening area of a passage that supplies hydraulic oil to a hydraulic actuator; a ...
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WO/2018/171948A1 |
The invention relates to a control unit for a control device for a heavy-duty vehicle, the unit having a main body (11) with two connection openings (12a, 12b), to which lines for a hydraulic medium of a first hydraulic circuit can be co...
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WO/2018/174411A1 |
The present invention relates to a rapid feed device and, more particularly, to a rapid feed device capable of rapidly feeding feed, such as a bombshell, by electric power. The rapid feed device according to the present invention compris...
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WO/2018/173843A1 |
Provided is a multiple directional control valve formed compact using a simple configuration. This multiple directional control valve (20) has a first directional control valve (30), a second directional control valve (40), and a third d...
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WO/2018/166984A1 |
The disclosure concerns a method for controlling the pressure in the chambers of a hydraulic cylinder (1) having a meter-out chamber (2) and a meter-in chamber (3). A meter-out valve (7) is connected to the meter-out chamber (2) for regu...
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WO/2018/168887A1 |
Provided is a hydraulic drive device that is for an electric hydraulic work machine and that makes it possible to: standardize the rated voltages of various types of electric devices, such as power storage devices, with those of an elect...
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WO/2018/167135A1 |
A hydraulic power control circuit for a construction vehicle, having a control section comprising: A first control valve (1) connectable to a source of hydraulic fluid under pressure (P1, P2, LSP) to control a power actuator (B) of the v...
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WO/2018/168236A1 |
Provided is a hydraulic drive device for a work machine that stores energy in a pressure accumulator and thereby recovers/reuses the energy, wherein operability corresponding to a change in the load on a front work machine due to the car...
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WO/2018/168179A1 |
Provided is a 2-engine construction machine capable of allowing a hydraulic closed circuit system to be more easily and efficiently mounted in the 2-engine construction machine, and achieving high energy saving performance. The hydraulic...
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WO/2018/163707A1 |
The present invention makes it possible to enhance the reproducibility of a device for automobile collision simulation testing. This servo actuator for automobile collision testing thrusts a piston rod toward a sled which is supported so...
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WO/2018/164263A1 |
A shovel according to an embodiment of the present invention is provided with: a base carrier (1); an upper turning body (3) that is mounted on the base carrier (1) in a turnable manner; a main pump (14) that is mounted on the upper turn...
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WO/2018/163722A1 |
An electromagnetic pressure reduction valve (40) is provided with a spool valve (42) that allows or blocks communication between a pilot passage (26) and a pilot pressure supply passage (28), and a solenoid (41) that imparts to the spool...
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WO/2018/156203A1 |
Disclosed are devices for controlling movement of an aerial bucket via a hydraulic system. The hydraulic system has a plurality of valves that control movement of the aerial bucket. A control head of the device has a joystick that is mov...
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WO/2018/153477A1 |
A hydraulic system to control at least two hydraulic actuators via a metering control valve assembly. The hydraulic system is particularly advantageous to control a pivoting arm of an undercutting mining machine according to at least two...
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WO/2018/151639A1 |
The present invention regards a fluid actuator arrangement (1), to be used in e.g. an interlinked elongated manipulator(IEM), and a method of moving a first rod (R1) and a second rod (R2) of a first actuating unit (A1), which comprises a...
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WO/2018/152069A1 |
A stage assembly (10) includes a stage (14), and a fluid actuator assembly (24) that moves the stage (14). The fluid actuator assembly (24) includes a piston housing (32) that defines a piston chamber (34); (ii) a piston (36) that separa...
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WO/2018/149780A1 |
The invention relates to a pin lifting device (10) for moving and positioning a substrate to be processed, comprising a pneumatic drive cylinder. Said pneumatic drive cylinder has a cylindrical housing (21), which encloses a first cylind...
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WO/2018/151323A1 |
The present invention suppresses the occurrence of jerking in a construction machine provided with a hydraulic pilot type hydraulic control device. A hydraulic shovel 1 provided with hydraulic pumps 51L, 51R, traveling motors 22L, 22R, t...
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WO/2018/151275A1 |
For a hydraulic machine such as an excavating/revolving work machine having a configuration wherein the capacity of a hydraulic travel motor can be switched, the objective is to ensure work precision by avoiding the effect of acceleratio...
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WO/2018/146035A1 |
The invention relates to a piezohydraulic actuator (10) comprising at least one piezo actuator (12), at least one drive (14), and at least two outputs (32, 44) hydraulically coupled to the drive (14) and mechanically coupled to one anoth...
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WO/2018/147106A1 |
Provided is a hydraulic system that can suppress costs and achieve comfortable operability. A hydraulic system (10) that comprises: a first hydraulic pump (11) and a second hydraulic pump (12); a first travel motor (21) and a second trav...
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WO/2018/147108A1 |
Provided is a simply structured directional control valve that change the supply flow of a hydraulic fluid. According to the present invention, a valve main body (31) has: a first branch passage (48) and a first parallel passage (46) tha...
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WO/2018/147261A1 |
Provided is a fluid pressure circuit that can smoothly control a rod of a cylinder device controlled according to an operation command. A fluid pressure circuit (52) comprises: a tank (8) that stores a fluid, a fluid pressure actuator (2...
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WO/2018/141499A1 |
A hydraulic arrangement (10) for a motor-vehicle drive train (40) which has a first hydraulic consumer (16; 52) and a second hydraulic consumer (18; 44), wherein the first consumer (16; 52) is supplied with a first fluid volume flow (Q1)...
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WO/2018/142818A1 |
In a pilot discharge pipeline (23), in order to bypass a diaphragm (32), a gate lock valve (27), and a check valve (33) that are provided in order from a pilot pump (16), a bypass pipeline (35) having one end side connected to the pilot ...
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WO/2018/143081A1 |
This hydraulic drive system, in which a main circuit forms a hydraulic closed loop with a hydraulic actuator, is provided with: a hydraulic pump connected to the hydraulic actuator through two different pressurized fluid paths ; pressuri...
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WO/2018/138960A1 |
The present invention provides an outboard motor raising/lowering device that can automatically modify the raising/lower speed depending on the state of the outboard motor. An outboard motor raising/lowering device (1) comprises: a first...
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WO/2018/137723A1 |
A material collector leveling cylinder hydraulic control system, comprising a hydraulic pump (1), a two-position three-way electric control reversing valve (3), a three-position four-way electric control reversing valve (4), a three-posi...
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WO/2018/137014A1 |
The present invention relates to a hydraulic or pneumatic system that uses a pressurised fluid to generate mechanical energy, in which the system is able to generate a final power that is much greater than the actuation power thereof. Th...
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WO/2018/139166A1 |
Provided is a revolution control device which achieves revolving operability with little variation in operating feel without depending on the discharge flow rate of a hydraulic pump or a revolving load. This revolution control device 39 ...
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WO/2018/139067A1 |
When a priority actuator and another actuator are not operated, a solenoid valve is in a valve-closed state, and a priority valve is switched to a first switch position, thus supplying hydraulic oil only to the priority actuator. When th...
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WO/2018/138959A1 |
The present invention provides an outboard motor raising/lowering device that can automatically modify the raising/lower speed depending on the state of the outboard motor. An outboard motor raising/lowering device (1) comprises: a first...
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WO/2018/119971A1 |
A hydraulic cylinder, a hydraulic system, and a crane. The hydraulic cylinder comprises a cylinder body (1), a first piston (2), and a piston rod (3). The first piston (2) is disposed in the cylinder body (1), and can move in the axial d...
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WO/2018/120784A1 |
A ballast flattening device (50) and a ballast flattening vehicle having same. The ballast flattening vehicle comprises a vehicle body (40) and the ballast flattening device (50) provided on the vehicle body (40). The ballast flattening ...
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WO/2018/119972A1 |
A crane hydraulic control system and a crane. The crane hydraulic control system comprises a prime mover (1), an execution control mechanism, a hydraulic energy conversion device (3), a running energy recycling device, and an operation e...
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WO/2018/117029A1 |
This hydraulic shovel driving system is provided with: a boom cylinder; a first boom control valve which is connected to the boom cylinder by a boom raising supply line and a boom lowering supply line, and which is connected to a first p...
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WO/2018/117028A1 |
This hydraulic system is provided with: a control valve which is connected to a pump by a pump line, and which is connected to a tank by a tank line; a cylinder which is connected to the control valve by a rod-side supply line and a head...
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WO/2018/117175A1 |
The present invention makes it possible to improve the straight travel of a working machine during an intermediate operation. Provided is a working machine comprising: a hydraulic pump; a first travel device driven by a first travel hydr...
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WO/2018/110673A1 |
The purpose of the invention is, in a hydraulic drive device for work machines that drives a plurality of actuators with three or more pumps, to allow very efficient compound action and pivoting of a front device and excellent compound o...
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WO/2018/108615A1 |
The invention relates to an autonomous hydraulic linear drive with a hydraulic assembly and to a method for operating same. The hydraulic assembly comprises a pump unit (27), an equalization container (28), and at least one automatically...
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WO/2018/092505A1 |
According to the present invention, a command rotational speed deceleration that is the deceleration of a command rotational speed that is set by a command rotational speed setting unit is greater than an actual rotational speed decelera...
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WO/2018/092582A1 |
This work machine is provided with: control valves (41-43) that control a flow of hydraulic oil supplied to actuators (31-33); operation lever devices (51-53) that generate, in response to operations thereof, hydraulic signals to be outp...
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WO/2018/092510A1 |
According to the present invention, when pressure can be accumulated at an accumulator, a hydraulic fluid that is discharged from a raising/lowering lift cylinder can cause pressure to accumulate at the accumulator via a pressure accumul...
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WO/2018/093303A1 |
The present invention regards a fluid actuator arrangement (1) comprising a first cylinder housing (3,3') comprising a first piston body (5, 5') comprising a first through-bore (11') and a first clamping element (13') provided for releas...
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WO/2018/092509A1 |
According to the present invention, when pressure can be accumulated at an accumulator, a hydraulic fluid that is discharged from a raising/lowering lift cylinder can cause pressure to accumulate at the accumulator via a pressure accumul...
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WO/2018/092507A1 |
A hydraulic drive device that comprises a resistance element that increases fluid resistance and is arranged on a descending oil path further to a lift cylinder side than an operation valve. A pilot flow path for a bypass flow control va...
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WO/2018/092629A1 |
This composite valve (1A) is formed by a valve body (10A), a first valve module (40A), and a second valve module (70A). The valve body (10A) has: a first body section (10a) for attaching the first valve module (40A); a second body sectio...
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