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WO/2017/171021A1 |
Provided are: a hydraulic system which exhibits excellent safety, and which is capable of slowly driving an actuator during emergency operation; and an emergency operation method. This hydraulic system is provided with: a hydraulic pump;...
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WO/2017/168822A1 |
Provided is construction machinery which even when excavation load increases during leveling or slope forming work or the like is able to achieve a predetermined finishing accuracy while avoiding loss due to relief operations. This const...
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WO/2017/167435A1 |
A control device is disclosed for at least one hydraulic working section (A, B), which can be connected to a pressure supply source (P) and a return flow (T) via a hydraulic supply circuit and a control valve (34) supplied with a pilot p...
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WO/2017/168049A1 |
A fluid valve assembly (60) comprises a central bore (202) and a stem (203) axially-movable within the central bore and actuated by an axial pilot force (F_pil) and an axial counter force (F_sup). An inner supply pressure chamber (202E) ...
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WO/2017/171597A1 |
The present invention regards a counter weighted roped hydraulic lifting system (101) comprising: a rope drive (109) coupled to a lifting member (115); a hoist arrangement (103) comprising a rope guide pulley arrangement (105); the rope ...
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WO/2017/164175A1 |
An excavator according to an embodiment of the present invention comprises an undercarriage (1), a rotating platform (3) that is mounted on the undercarriage (1), an engine (11) that is provided to the rotating platform (3), a main pump ...
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WO/2017/164370A1 |
Provided is a failure diagnosis device with which failure of an unloading circuit of a hydraulic system can be reliably discovered. The unloading circuit is provided with a pump oil passage that connects a hydraulic pump and a directiona...
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WO/2017/164169A1 |
The shovel according to an embodiment of the present invention has an arm cylinder (8) that is driven by working oil discharged by a main pump (14) so as to move an arm (5), a control valve (176B) that is disposed on a center bypass pipe...
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WO/2017/157606A1 |
The invention relates to a hydraulic system (4) for a transmission of a motor vehicle. The hydraulic system comprises a first pump (5) which can be driven by an engine of the motor vehicle, and a second pump (20) which can be driven elec...
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WO/2017/154220A1 |
Provided is construction machinery capable of reducing load torque during engine startup, even when the engine is stopped against a driver's will. A hydraulic shovel includes a control device (35) including a pump capacity control unit (...
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WO/2017/154186A1 |
A hydraulic shovel is provided with an arm cylinder (34) driven by hydraulic oil from a hydraulic pump (23), a meter-out flow channel (L4) through which hydraulic oil expelled from the arm cylinder flows, a control valve (41) for control...
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WO/2017/151021A1 |
The present invention regards a fluid actuator arrangement (1) comprising a first clamping unit (3) coupled to a first actuating unit (5) comprising a first (7) and second (9) cylinder in fluid communication with a fluid supply (11), whe...
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WO/2017/145532A1 |
This hydraulic steering device is equipped with: rams 8, 9 to which a tiller 4 journaled on a steering shaft 2 is turnably mounted; a pair of hydraulic cylinders 10, 10 which are placed opposite each other; and bypass oil passages 28, 29...
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WO/2017/145658A1 |
Provided is a work machine hydraulic circuit by which good turning operation feel is obtained. This work machine hydraulic circuit is provided with: a prime mover, the rotation speed of which is determined on the basis of an operation in...
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WO/2017/146263A1 |
The present invention comprises: a first layer (52) having a first oil passage (91) having a circular cross-section and opening to a first groove (19a) extending in a direction orthogonal to a first surface (19); a second layer (61) lami...
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WO/2017/145969A1 |
[Problem] To provide a liquid material discharge device capable of reducing takt time. [Solution] A liquid material discharge device comprising: a liquid chamber connected to a discharge port and having liquid material supplied thereto; ...
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WO/2017/141479A1 |
A control device 100 for a fluid pressure actuator is provided with: a first valve 20 which controls the flow of a hydraulic oil that is supplied to or discharged from a hydraulic cylinder 2; an increase/decrease determination unit 43 wh...
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WO/2017/137321A1 |
The invention relates to a gear shifting device for a transmission, in particular for a reversing transmission, comprising a gear shifting element (21), a housing (10, 11), and a gear shifting lever (1), wherein the first end (2) of the ...
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WO/2017/130404A1 |
The purpose of the present invention is to provide a spool valve device for a pneumatic cylinder, which is capable of adjusting the dead band during switching back and forth between an extension direction operation and retraction directi...
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WO/2017/132433A1 |
Hydraulic circuits for controlling a movable component use one or more of a plurality of fluid supplies. Pressurized fluid flowing from one supply is routed toward the component and is not inadvertently vented into another fluid supply, ...
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WO/2017/130850A1 |
Provided are a fluid control device in which gas line sections can be easily mounted on a frame, and a method for attaching and detaching the gas line sections. A first horizontal frame member 10 of the frame 2 is provided with: a hookin...
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WO/2017/130455A1 |
A pilot operated switching valve (50) is provided with: a housing hole (53) formed in a valve body (52) and having an opening end (53a); a spool (54) housed in a slidable manner within the housing hole (53) and permitting or blocking the...
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WO/2017/127001A1 |
The present invention regards a fluid actuator arrangement (101) comprising a first cylinder housing (103) including a first head member (105) and a second head member (107); a first piston body (109) is slidable arranged in said first c...
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WO/2017/127678A1 |
A control valve comprises a body. A diverter is disposed within the body. The diverter is movably positionable within the body such that the diverter can assume a first position, second position and third position. The body includes one ...
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WO/2017/127003A1 |
The present invention regards a fluid actuator arrangement (101) comprising a first cylinder housing (103) including a first head member (105) and a second head member (107); a first piston body (109) is slidable arranged in said first c...
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WO/2017/110177A1 |
According to the present invention, a back pressure control valve (40) is provided with: a switching valve (50) which opens/closes a connection path (13); and an emergency operation valve (60) which is provided to a branched path (14) an...
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WO/2017/110167A1 |
The present invention can achieve energy conservation by carrying out recycle control even when an abnormality occurs in a pressure sensor of a hydraulic actuator. The present invention is provided with: a hydraulic pump (41b) that suppl...
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WO/2017/110525A1 |
A mixer drum drive device (100) is provided with: a hydraulic pump (5) driven by a propulsion engine (3) of a vehicle (1); a hydraulic motor (6) that drives a mixer drum (2) to rotate through the action of a working fluid discharged from...
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WO/2017/112720A1 |
Apparatus for independently controlling the seating force in a rotary valve are described herein. An example apparatus includes a rotary valve having a flow control member and a dual-acting actuator operatively coupled to the rotary valv...
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WO/2017/103100A1 |
A modular directional valve with two or more elements (E1, E2, E3, E4) in turn connectable to respective utilities (U) through the uses (A1, B1, A2... B4); of which one or more elements (E1 E2) are of the CA type while one or more elemen...
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WO/2017/103104A1 |
Modular directional valve with two or more crossing elements (E1.. En) able, acting only on the entry side, to manage a variable displacement pump (PA) of the load sensing type. In particular, this management allows in a single drive, un...
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WO/2017/103079A1 |
Modular directional valve with two or more crossing elements (E1.. En) fed by a variable displacement (PA), negative control or load sensing pump. A pressure regulator (5) is placed in the entry side and only on the bypass line and upstr...
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WO/2017/102331A1 |
A valve arrangement for hydraulic control of a piston-cylinder of a power switch (7) contains a main stage having a first main valve (31) and a second main valve (32), and a pilot stage having at least one pilot valve (3, 4). In order to...
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WO/2017/104179A1 |
The present invention makes a more efficient design of a manifold block possible by incorporating a silencer member for limiting exhaust gas noises from electromagnetic valves into the manifold block. A manifold block (2) is provided wit...
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WO/2017/104459A1 |
The present invention ensures different initial responses depending on the hydraulic actuator in almost the same manner as when using a hydraulic pilot-mode manipulator. According to an operation signal from electric lever-type work mani...
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WO/2017/097470A1 |
A hydraulic arrangement (10) for a motor-vehicle drivetrain (40) which has a first hydraulic consumer (16; 52) and a second hydraulic consumer (18; 44), wherein the first consumer (16; 52) is provided for being supplied with a first flui...
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WO/2017/099230A1 |
This hydraulic drive system is provided with a control valve device for an actuator, an operation device including an operation lever, a variable-capacity-type pump, and a flow rate adjustment device for controlling the discharge flow ra...
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WO/2017/094454A1 |
A pressure compensation unit comprises: a control valve that controls supply and discharge of a hydraulic liquid to and from an actuator, said control valve comprising a pump port, a pair of relay ports, a pair of supply and discharge po...
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WO/2017/090465A1 |
Provided is a control device for a construction machine with which it is possible to stop an upper rotation body at a desired rotation stop angle. A main controller is provided with: a rotation stop desired-angle-setting unit for setting...
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WO/2017/085996A1 |
A counter balance valve (10) is provided with: valve-side passages (14a), (14b) connected to a direction switching valve (3); motor-side passages (15a), (15b) connected to a hydraulic motor (2); a control valve (11) that controls flow of...
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WO/2017/086844A1 |
The present invention regards a method for operating a telescopic device (1) and the elongated telescopic device (1) per se comprising a support element (8) formed to encompass first and second telescopic element (9', 9'') mounted so as ...
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WO/2017/084792A1 |
The invention relates to an energy storage system (1) for temporarily storing electrical energy with an electric machine (4) which is drive-connected to a hydraulic machine (5), and with a pneumatic-hydraulic piston-cylinder arrangement ...
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WO/2017/076965A1 |
The invention relates to a method for controlling a hydraulically actuated drive unit (1-3) in particular for a valve, wherein the adjustment velocity (v1) is determined at least over part of the adjustment travel of the drive unit and i...
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WO/2017/073439A1 |
Provided is a fluid control valve having a structure suitable for removing exhaust from a pressure chamber of a fluid pressure actuator and reusing the exhaust. The fluid control valve comprises: an air supply flow path (14) that connect...
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WO/2017/073163A1 |
The purpose is to provide a hydraulic pressure control device and a brake system able to improve the degree of layout freedom for an oil passage inside a housing. The present invention is provided with: a normally closed electromagnetic ...
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WO/2017/071027A1 |
A multi-cylinder synchronized hydraulic lifting/lowering system and method, applicable in lift systems such as a hydraulic elevator and a construction lifting/lowering platform. The system comprises a fluid replenishing circuit (1), a vo...
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WO/2017/072173A1 |
The invention relates to an actuator device comprising two drive units (10, 20) for an actuator output drive (24). The first drive unit (10) has a first piston chamber (11), a first piston (12) which can be moved in the piston chamber, a...
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WO/2017/068229A1 |
A hydraulic system and a method comprising a linear actuator 23 for generating discrete sum forces, chambers A-D for generating discrete force components, at least two charging circuits 3,4 configured to maintain predetermined pressure l...
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WO/2017/068447A1 |
The present invention concerns a pressure multiplication hydraulic circuit comprising at least one hydraulic pressure multiplication device (1, 101) comprising at least one hydraulic drive cylinder (10, 110) and at least one hydraulic cy...
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WO/2017/070539A1 |
Systems, methods and devices are described providing a selective hydraulic or electrically powered prime mover that is a (bi-directional power unit) PU system, including movement within a device or system used to compress and/or expand a...
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