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WO/2022/054868A1 |
A hydraulic drive system according to the present invention is provided with: a first circuit system; a first hydraulic pump; a second circuit system; a second hydraulic pump; a merge valve that opens and closes a merging channel that co...
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WO/2022/054449A1 |
A hydraulic shovel driving system (1A) according to an embodiment includes a first pump (22) connected to a head-side chamber (13a) of a boom cylinder (13), and a second pump (32) that supplies working oil to an arm cylinder (14) and/or ...
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WO/2022/049589A1 |
The present invention relates to a stand-alone or inbuilt logical element associated with a hydraulic system for effective regeneration to improve the efficiency of any hydraulic system of a machine or equipment, including but not limite...
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WO/2022/049298A1 |
The invention relates to a gas-powered drive system, comprising a drive (A) with a first chamber (1) and a second chamber (2), which are separated from one another by a movable work element (3) of the drive (A), in particular by a piston...
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WO/2022/046761A1 |
An apparatus to transfer a fluid from a fluid inlet to a fluid outlet is disclosed herein. An example apparatus includes a first compressor unit and a second compressor unit fluidly coupled between the first and second locations, and a v...
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WO/2022/044699A1 |
When an engine (70) is started with the support member (21) of a multi-coupler (20) attached to a mating support member (22), the pressure of hydraulic oil rises in a pipeline (32B) to be detected. A pressure detection unit (80) detects ...
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WO/2022/041997A1 |
A blade hoisting tool and a hydraulic system thereof. The hydraulic system comprises: driving units (4, 04), driving hydraulic oil in the hydraulic system to form oil supply paths and oil return paths, and supplying oil to oil cylinders ...
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WO/2022/041595A1 |
A control module and a hydraulic system. The control module comprises: a first control valve (1), which is provided with a first control end (11) and a second control end (12), and is provided with a port a and a port b for conveying pre...
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WO/2022/039650A1 |
The invention relates to a timber handling vehicle (1) and a timber grip, wherein said timber handling vehicle includes a load compartment (2), a crane (3) a timber grip (4), a hydraulic cylinder (4c), a hydraulic system (11, 12), a pump...
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WO/2022/039697A1 |
The invention relates to a hydraulic system developed to provide energy recovery during tilting of the first pressure compensator tilting/lowering proportional directional valve (OR1) (2.1) in tilting/lowering-lifting cylinder hydraulic ...
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WO/2022/031823A1 |
A flow control manifold apparatus includes a housing defining a first flow path from a flow input port to flow output port and a second flow path from a return inlet port to a return outlet port. A first flow regulating valve is placed i...
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WO/2022/022858A1 |
A hydraulic system can include a hydraulic actuator including a first port and a second port; a hydraulic pump; a hydraulic reservoir; a first control valve operable to selectively control flow from the hydraulic pump to the first port; ...
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WO/2022/019800A1 |
The invention relates to hydraulic cylinder devices and can be used in vehicle transmissions. A three-position pneumatic or hydraulic cylinder consists of a housing having end caps, two pistons, a rod, and supply channels for a working f...
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WO/2022/019058A1 |
This flow path switching device (1) switches the flow path configuration of a flow path circuit (50) through which a fluid circulates, the flow path switching device comprising a main body member (5), a drive unit (30), a first-layer-sid...
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WO/2022/014315A1 |
This hydraulic drive system comprises a hydraulic pump that can vary the discharge flow rate of a hydraulic fluid, a meter-in control valve that controls the meter-in flow rate of hydraulic fluid flowing from the hydraulic pump to a hydr...
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WO/2022/013329A1 |
A control method for actuating a combined motion of a plurality of hydraulic implements of a work or agricultural machine comprising a flow sharing hydraulic circuit, the method comprising a preliminary step of grouping said plurality of...
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WO/2022/014606A1 |
This work machine comprises: a hydraulic actuator driven by pressurized oil from a hydraulic pump; an open center-type direction control valve which is disposed on a center bypass line and controls the flow of the pressurized oil supplie...
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WO/2022/010077A1 |
The present invention relates to a display device. A display device according to one embodiment of the present invention comprises: a housing; a plurality of display elements disposed in the housing in a first mode and projecting out of ...
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WO/2022/008813A1 |
Load-handling vehicle comprising: - a load-handling member, - a jack (4) for lifting the load-handling member, comprising a lifting chamber (5) and a lowering chamber (6), - a fluid source (7), - a first fluid connection (8) from the lif...
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WO/2021/256059A1 |
The purpose of the present invention is to provide a construction machine capable of efficiently driving a hydraulic cylinder by using an accumulator. To this end, this construction machine comprises: a hydraulic cylinder; a first accumu...
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WO/2021/256060A1 |
The purpose of the present invention is to provide a construction machine capable of efficiently driving a hydraulic cylinder by an accumulator. Thus, this construction machine comprises a first control valve disposed in a first oil pass...
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WO/2021/256058A1 |
The purpose of the present invention is to provide a construction machinery capable of effectively utilizing a return oil of a hydraulic actuator. Therefore, a controller: calculates a return flow rate from a first hydraulic actuator on ...
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WO/2021/256098A1 |
This hydraulic drive system comprises: a hydraulic pump that supplies an operating fluid to a hydraulic actuator; a meter-in control valve that controls flow volume of the operating fluid that flows from the fluid pump to the hydraulic a...
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WO/2021/254355A1 |
A power generation dock for gravity-based sinking and floating parent and child boats in an open sea or coastal water, comprising a parent boat (1), a mechanical power transmission device, hydraulic power transmission mechanisms and gene...
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WO/2021/251244A1 |
This rotary construction machine comprises a merge control unit (51) for controlling a merge switching valve so that the merge switching valve is switched to a blocking state when a rotating boom lifting operation is performed. The rotar...
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WO/2021/251140A1 |
This hydraulic shovel driving system (1) includes: a first pump (22) connected to a head-side chamber (13a) of a boom cylinder (13); and a second pump (32) that supplies working oil to at least one among an arm cylinder (14) and a bucket...
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WO/2021/244031A1 |
Disclosed is an electronically controlled hydraulic system of a hydraulic suspension device. The system comprises: a first overflow pressure-maintaining branch oil circuit and a second overflow pressure-maintaining branch oil circuit are...
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WO/2021/235207A1 |
A hydraulic excavator drive system (1) includes a first pump (21) that is connected to a head-side chamber (13a) of a boom cylinder (13) with a head-side line (22) and connected to a rod-side chamber (13b) with a rod-side line (23) so as...
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WO/2021/233695A1 |
A system for braking a displacer-controlled drive system (10) which can be driven for a movement by means of a feed pressure and an outlet pressure on a feed and outlet side, respectively, thereof, characterized in that an outlet volumet...
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WO/2021/233024A1 |
Disclosed are a fork leveling system and method, and a telescopic boom forklift, which relate to the technical field of hydraulic adjustment. The fork leveling system comprises a driving leveling oil cylinder (2), a driven leveling oil c...
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WO/2021/235574A1 |
A hydraulic machine includes an actuator, a tank (40), a directional control valve disposed between the actuator and the tank (40), and an adjustable return check valve (60) disposed between the directional control valve and the tank. Th...
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WO/2021/229151A1 |
A work machine (1) comprises at least one structural element (21), at least one pressure medium operated actuator (22) for establishing at least one operation of the work machine, and at least one detection device (23) to determine the p...
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WO/2021/228437A1 |
A hydraulic system includes a pump having a load-sense control arrangement, a reservoir, a hydraulic actuator, and a first control valve assembly in fluid communication with the actuator. The first control valve assembly can include a fi...
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WO/2021/226791A1 |
A load sensing pump system, a hydraulic control system, and construction machinery. The load sensing pump system comprises: a variable displacement pump (1); a fixed displacement pump (2), driven by a same drive mechanism as the variable...
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WO/2021/227452A1 |
A main hoist system of a rotary drilling rig, and a control method therefor. The main hoist system of a rotary drilling rig comprises a main action loop, a pilot control loop, and a feedback control loop, the main action loop comprising ...
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WO/2021/220518A1 |
[Problem] To make the plates in which a hydraulic integrated circuit is formed in an automatic or stepless transmission more compact. [Solution] This channel-equipped bolt 10A has a communication channel 15 through which a hydraulic flui...
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WO/2021/219470A1 |
The invention relates to a hydrostatic linear drive comprising a hydraulic cylinder with a working piston, on one side of which there is disposed a first cylinder chamber and on the other side of which there is disposed a second cylinder...
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WO/2021/219253A2 |
A method for preventing prime mover stall for a work machine including a hydraulic system having a plurality of control valves served by a hydraulic pump. The method can include determining an actual required flow rate value for the plur...
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WO/2021/213356A1 |
An electronically controlled hydraulic system (200) and an agricultural machine having same. The electronically controlled hydraulic system (200) comprises a hydraulic assembly (10), a power output device (40), a fluid (50) that can be t...
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WO/2021/216214A1 |
A hydraulic circuit is disclosed. The hydraulic circuit may include a hydrostatic pump to provide, at a flow rate, a fluid to a hydraulic motor, wherein the hydrostatic pump has a displacement, and wherein the hydraulic motor drives a sw...
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WO/2021/213400A1 |
An electric control hydraulic system (200) and a hydraulic drive method; the electric control hydraulic system (200) comprises a hydraulic assembly (10), a power output device (40), oil (50) capable of being transmitted between the hydra...
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WO/2021/213399A1 |
Disclosed is an electronically controlled hydraulic system, comprising a hydraulic assembly (10), a power output device (40), oil fluid (50) capable of being transmitted between the hydraulic assembly and the power output device, a hydra...
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WO/2021/210545A1 |
Provided is a pneumatic actuator control device with which it is possible to avoid complications with wiring, etc. that can arise when using an auto switch. This pneumatic actuator control device (10) comprises: detectors (61, 62, 71, ...
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WO/2021/208404A1 |
A hydraulic press machine for a fiber-reinforced plastic product. Columns (2) are mounted at four corners of a worktable (4). The tops of front and rear rows of columns are respectively connected to each other by means of upper cross bea...
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WO/2021/206002A1 |
A hydraulic system 1A according to one embodiment includes a plurality of control valves 5A, 5B positioned on center bypass lines 31, 41 extending from variable-capacity pumps 22, 24 to a tank, and relief valves 36, 46 provided to relief...
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WO/2021/197736A1 |
The invention relates to a hydropneumatic suspension system for vehicles, at least consisting of an axle suspension (10) and a cab suspension (12) which can be connected to a pressure supply source in order to be supplied with pressurize...
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WO/2021/200244A1 |
Provided is a work machine enabled for speeding up the operating speed of an actuator by means of a regeneration function, while maintaining the positional control accuracy of the actuator. A controller: computes a regeneration flow ra...
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WO/2021/201158A1 |
The purpose of the present invention is to provide a working machine which is capable of increasing an operating speed of an actuator by means of a regeneration function, while securing the position control accuracy of the actuator. To t...
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WO/2021/200024A1 |
The present invention is provided with: a variable capacity-type hydraulic pump 18; an arm cylinder 15 that is driven by pressure oil discharged from the hydraulic pump 18; an operation lever 26 that outputs an operation signal for activ...
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WO/2021/192389A1 |
Provided is a work machine capable of achieving both good operability when an operator manually operates a vehicle body or a work device and control accuracy of the vehicle body or the work device when a controller performs automatic con...
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