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Matches 1 - 50 out of 33,113

Document Document Title
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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)...  
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 ...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
WO/2018/088145A1
Provided are: an energy regeneration device capable of controlling the flow of a hydraulic fluid discharged from an actuator while regenerating energy from the hydraulic fluid; and a work machine provided with same. The regeneration devi...  
WO/2018/084332A1
The present invention relates to a hydraulic control system for a construction machine. More specifically, the present invention provides a hydraulic control system for a construction machine comprising: a hydraulic pump group that inclu...  
WO/2018/079194A1
A hydraulic shovel drive system is provided with: first and second pumps; an arm cylinder; an arm first control valve connected with the arm cylinder by an arm pulling supply line and an arm pushing supply line; an arm second control val...  
WO/2018/077330A1
The invention relates to a hydraulic system (1) for clutch and/or transmission actuation, comprising a reversible pump (2) and two main lines (3, 4), wherein the pump (2) can be connected to a first consumer (7) at a first pump connectio...  
WO/2018/079193A1
A hydraulic drive system for a construction machine is provided with: a variable capacity-type pump that supplies a working fluid to a turning motor via a turning control valve; a pair of supply/discharge lines connecting the turning mot...  
WO/2018/073152A1
The invention relates to a hydraulic drive for a hydraulic spindle, such as a die cushion device of a press machine for example, comprising a fluid pump for providing a volumetric flow for a drawing process from a fluid supply to a hydra...  
WO/2018/075241A1
Methods and apparatus of stabilizing a valve positioner when testing a solenoid valve are disclosed. An example apparatus includes a solenoid valve (202) and a valve positioner (106) fluidly and communicatively coupled to the solenoid va...  

Matches 1 - 50 out of 33,113