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Matches 1 - 50 out of 32,729

Document Document Title
WO/2018/008190A1
A work machine is provided which, by suppressing speed variation of a hydraulic actuator accompanying hydraulic oil regeneration during implementation of machine control, can improve work efficiency while maintaining control accuracy of ...  
WO/2018/003753A1
A cylinder drive device (100) is provided with an electric motor (30), a pump (20), a main passage (80a) and main passage (80b), a hydraulic cylinder (10), an operate check valve (60b) and operate check valve (60a), and a throttle valve ...  
WO/2018/001388A1
A high-efficiency bending machine bending method, wherein an oil inlet of an oil pump (2) is connected to an oil tank (16), an oil outlet of the oil pump (2) is connected to a P port of a three-position four-way electromagnetic reversing...  
WO/2018/003403A1
A fluid pressure control device (100) is provided with a first duct passage (31) that connects first duct ports (11a)-(17a) to each other, a second duct passage (32) that connects second duct ports (11b)-(17b) to each other, a connecting...  
WO/2017/221524A1
[Problem] To provide a speed controller that can be attached to a fluid pressure cylinder in a compact manner. [Solution] A bulb body (11) of the speed controller has: a main body (12) that extends along a first axis (L1); and a fitting ...  
WO/2017/221758A1
In this hydraulic drive system, a plurality of loading system drive devices adjust the flow rate of the hydraulic fluid flowing to a loading system actuator from a loading system pump, and a steering system drive device adjusts the flow ...  
WO/2017/212919A1
A pump device (100) is provided with: a tilt actuator (15) that controls the tilt angle of a swash plate (11) in a variable capacity-type first pump (10); a regulator (60) that adjusts a control pressure (Pcg) in accordance with the pres...  
WO/2017/212709A1
In order to achieve both actuator responsiveness to operation and front control functionality, provided is a work machine equipped with a front control device that calculates a limit command value for limiting operation of a front work d...  
WO/2017/212918A1
A pump device (100) is provided with: a variable capacity-type first pump (10); a tilt actuator (15) that controls the tilt angle of a swash plate (11) in the first pump (10) in accordance with a control pressure (Pcg); a regulator (60) ...  
WO/2017/213027A1
In order to enhance the responsiveness of an electromagnetic valve device to an operation, this work machine is provided with: an electromagnetic valve device which controls the flow of a pressure oil supplied from a hydraulic pump to a ...  
WO/2017/213571A1
A carrier comprising a hydraulic cylinder having a piston, a controller and a piston position sensor, wherein the carrier is arranged to carry an accessory through the use of the hydraulic cylinder and wherein the controller is configure...  
WO/2017/210450A1
A stage assembly (10) for positioning a workpiece (22) includes a stage (14), a base (12), a fluid actuator assembly (24), and a control system (20). The fluid actuator assembly (24) moves the stage (14) along the movement axis (30) rela...  
WO/2017/204698A1
The present invention relates to a hydraulic system (34) comprising a first actuator (36), a first pump assembly (38) and a first hydraulic circuit (40) for providing hydraulic fluid from the first pump assembly (38) to the first actuato...  
WO/2017/198725A1
Hybrid multistage systems and methods for converting the potential energy of a pressurised gas, particularly air, into mechanical work of two rotating shafts (L.16 and H.10) when operating in expansion mode, and for producing compressed ...  
WO/2017/198420A1
The invention relates to a piezohydraulic actuator (1) which is formed as a system having four chambers, wherein a first chamber is a drive bellows (3) which is movable by a piezo actuator (5) and which is filled with a hydraulic fluid (...  
WO/2017/200440A1
The present disclosure relates to a fluid actuator arrangement (100)and a method for control of a fluid actuator arrangement. The fluid actuator arrangement comprises a piston rod member (101),at least two cylinders (105, 106) each said ...  
WO/2017/200450A1
A operator supporting electrohydraulic drive and control system based on, position sensors (8) (9), a electronic control unite ECU (2), a recovery, storing and re-use system for energy, and with actuator (3) (4) and the drive control val...  
WO/2017/200441A1
The present invention regards a system and a method for providing a motion of an aircraft secondary control member (111, 611) incrementally in steps. An aircraft secondary control system comprises a rod arrangement (109, 609) of a drivin...  
WO/2017/195716A1
Provided is a crane 1 constituting a hydraulic system H that includes: actuators 25, 35, 45; direction switching valves 20, 30, 40 that switch the flow direction of an operating fluid for actuating the actuators 25, 35, 45; and proportio...  
WO/2017/195786A1
An actuator device (10) is provided with: a piston (21), which is housed in an internal space, and which forms, with a cylinder (20), a pair of pressure chambers (24, 25), said piston relatively moving with respect to the cylinder; a fir...  
WO/2017/193207A1
A pneumatic engine includes a plurality of pneumatic motors and an engine drive shaft. Each motor has a motor gas inlet, a motor gas outlet, and a rotor driven by gas flow between the motor gas inlet and the motor gas outlet. The engine ...  
WO/2017/191367A3
The object of the invention is a transmission arrangement for a moveable device, such as a door (1 ) opening mechanism (2) and a method for using a device moved with a hydraulic cylinder (3). The method comprises at least the following s...  
WO/2017/190298A1
A hydraulic actuator drive mechanism (200) for a wheel loader (100), which is configured such that the wheel loader (100) can be moved to a high altitude place to perform a work even without replacing an existing hydraulic pump with a hy...  
WO/2017/191367A2
The object of the invention is a transmission arrangement for a moveable device, such as a door (1 ) opening mechanism (2) and a method for using a device moved with a hydraulic cylinder (3). The method comprises at least the following s...  
WO/2017/192303A1
A hydraulic system includes one or more hydraulic subsystems that have a source of additional flow for supplying an auxiliary system. The hydraulic system may include one or more actuator systems, a boost system, and a further hydraulic ...  
WO/2017/188460A1
This control system is equipped with: an engine; a first hydraulic pump and a second hydraulic pump that are driven by the engine; an opening/closing device that is provided to a flow passage connecting the first hydraulic pump and the s...  
WO/2017/188193A1
This control system comprises: a distribution flow rate calculation unit that calculates a distribution flow rate of an operating fluid, said operating fluid being supplied to each of a first hydraulic actuator and a second hydraulic act...  
WO/2017/187980A1
[Problem] To provide a fluid control valve which has a simple structure, is compact, and is highly responsive when used while being connected to a fluid pressure circuit. [Solution] A fluid control valve has a first flow passage (27) and...  
WO/2017/188869A1
The present invention relates to a hydraulic system (30) for circulating hydraulic fluid via a pump (26) and a hydraulic motor (28). The hydraulic system (30) comprises a main control valve (36) adapted to be located between the pump (26...  
WO/2017/182325A1
The invention relates to a method for the supply of compressed air to a compressed-air consumer (3) which has two fluidically separate, kinematically coupled working chambers (53, 54), wherein each of the working chambers (53, 54) is ass...  
WO/2017/182268A1
The invention relates to a method for operating a valve device for supplying compressed air to a compressed air consumer (3; 63), comprising the steps: determining a first fluid pressure in a first section (20, 21, 22, 23) of a fluid duc...  
WO/2017/182511A2
The invention relates to an electronic execution unit (124) for controlling and regulating a pneumatic valve assembly (VS, V, VI, WV) for a pneumatic movement, said invention being characterised in that an application (A) for controlling...  
WO/2017/182511A3
The invention relates to an electronic execution unit (124) for controlling and regulating a pneumatic valve assembly (VS, V, VI, WV) for a pneumatic movement, said invention being characterised in that an application (A) for controlling...  
WO/2017/183695A1
The present invention comprises: a first layer (51) that has a first facing surface (515), first grooves (515a, 515c), and a first joint portion (515b); and a second layer (52) that has a second facing surface (526), second grooves (526a...  
WO/2017/178249A3
The invention relates to a hydraulic cylinder comprising a cylinder (2), a piston element (3) movably guided in the cylinder (2) in a working direction (W) and comprising an active surface (5, 7), and a first opening for feeding a fluid ...  
WO/2017/178546A1
In a load sensing hydraulic control circuit, a pressure compensator elaborates both a load sensing pressure signal to control a pump unit and a pressure compensated power flow for actuators, the power flow being either split or alternati...  
WO/2017/178347A1
An electrohydraulic control circuit (1) for actuating a hydraulically activated drive assembly (2), by means of which a mast segment of a manipulator, in particular of a large-scale manipulator for truck-mounted concrete pumps, can be ad...  
WO/2017/178249A2
The invention relates to a hydraulic cylinder comprising a cylinder (2), a piston element (3) movably guided in the cylinder (2) in a working direction (W) and comprising an active surface (5, 7), and a first opening for feeding a fluid ...  
WO/2017/175865A1
The present invention is configured so that it is possible to select any one of a first mode in which a first adjustment valve 13 and a second adjustment valve 20 operate solely on the basis of manipulation of a main manipulation tool (t...  
WO/2017/175814A1
The purpose of the invention is to provide a system for controlling a hydraulic pump with which it is possible to minimize an opening oil amount by estimating a requested oil amount on the basis of an actual driven amount of an actuator....  
WO/2017/175820A1
Provided is an emergency operation valve capable of alternatively switching between an open state and a closed state, wherein the emergency operation valve is configured so as to be provided with a valve box having a hollow valve chamber...  
WO/2017/175862A1
Provided is a crane that is capable of protecting a hydraulic cylinder by suppressing operation of the hydraulic cylinder when the hydraulic cylinder is in poor connection with a hydraulic circuit. A crane (1) provided with a derricking ...  
WO/2017/175194A1
A hydraulic apparatus for supplying track-setting devices for producing a cross-country skiing trail; the apparatus (3) comprising: a first inlet (6) for receiving a fluid; a first outlet (7) and a second outlet (8) for releasing two flo...  
WO/2017/171022A1
Provided is a failure detection device which is capable of automatically detecting failure of a hydraulic pilot circuit following a normal lever operation. The failure detection device is for a pilot circuit provided with: a pilot pressu...  
WO/2017/171381A1
The present invention relates to a vibrating pile driver, which: simply maintains the position of a pile (P) by utilizing the lifting of a horizontal shaft (90) relative to a circular hole (75a) when the pile (P) is pressed and inserted ...  
WO/2017/170256A1
This shovel is provided with: a hydraulic motor (21) for swiveling; a center bypass line (40L) on which a flow rate control valve (170) for the hydraulic motor (21) for swiveling is arranged; a negative control aperture (18L) which is ar...  
WO/2017/171088A1
This dump truck control system is provided with: a signal reception unit that receives a raising instruction signal that causes a dump truck, which is equipped with a vessel and a hydraulic cylinder for raising/lowering the vessel, to st...  
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;...  
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...  
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...  

Matches 1 - 50 out of 32,729