| Document |
Document Title |
|
WO/2023/152150A1 |
Hydraulic circuit for supplying a cylinder (Ve) comprising a delay valve (Vr, Vr', Vr'') having an inlet port (E), an outlet port (S) and at least one return port (R), the delay valve comprising a directional control valve comprising: - ...
|
|
WO/2023/152147A1 |
The invention relates to a method for diagnosing a state of deterioration of an uplock comprising an unlocking actuator 12, 22 provided with a hydraulic cylinder (Ve), the method comprising the following steps: • a) supplying the cylin...
|
|
WO/2023/150448A1 |
An example valve includes a piston configured to block fluid flow from a first port of the valve to a second port of the valve when the valve is in a closed position; a relief mode spring applying a first biasing force on the piston in a...
|
|
WO/2023/150455A1 |
An example valve includes a valve piston configured to block fluid flow from a first port of the valve to a second port of the valve when the valve is in a closed position; a forward flow spring applying a first biasing force on the valv...
|
|
WO/2023/150459A1 |
An example valve includes: a first port, a second port, and a load-sense port; a valve piston configured to block fluid flow from the first port to the second port when the valve piston is in a neutral position; a reverse flow spring app...
|
|
WO/2023/147740A1 |
Disclosed is a constant value parameter method for detecting and evaluating leakage in a hydraulic cylinder, comprising the following steps: step (1): measuring an accurate pressure drop value Δp of leakage in a hydraulic cylinder; and ...
|
|
WO/2023/142892A1 |
A liquid pressure calibration apparatus, a first liquid path (200) and a second liquid path (300) having different pressure output ranges being arranged in parallel between a liquid pressure introduction port (A) and a liquid pressure ou...
|
|
WO/2023/134041A1 |
A control method for controlling retraction of a boom, a system, a mechanical device, and a storage medium, the control method for controlling retraction of the boom being applied to a hydraulic system that may combine self-weight retrac...
|
|
WO/2023/130627A1 |
A hydraulic system with adjustable power, comprising a prime mover (10), which is respectively connected to a first pump body (20) and a second pump body (30), the first pump body (20) being connected to a load (40), and the second pump ...
|
|
WO/2023/125110A1 |
A current calibration method for an electromagnetic valve. The method comprises: loading an initial starting current to an electromagnetic valve; acquiring the movement range of an actuating mechanism controlled by the electromagnetic va...
|
|
WO/2023/123782A1 |
An electro-hydraulic combined control system, a method, and an operation machine, the electro-hydraulic combined control system comprising a controller (18), a hydraulic oil output unit, an action execution valve unit and an action instr...
|
|
WO/2023/117666A1 |
The invention relates to a shuttle valve for selecting a maximum pressure in two mutually separate control pressure lines; having a first inlet pressure port and a second inlet pressure port for a first control pressure; having a third i...
|
|
WO/2023/118842A1 |
A hydraulic switching valve (100) for a switched inertance hydraulic circuit. The valve comprises a manifold (102) comprising a cavity (104), there being a first port (106), a second port (108) and a third port (110) opening into the cav...
|
|
WO/2023/115747A1 |
A valve cover assembly, a hydraulic valve group, a hydraulic driving system, and an operation vehicle. The valve cover assembly comprises: a valve cover (13), the valve cover (13) being provided with an emergency oil port (132), and an o...
|
|
WO/2023/119028A1 |
The suspension (10) includes a hydraulic actuator (12) and a supply hydraulic circuit (14) connected to the hydraulic actuator (12) to supply a compression chamber (20) and an extension chamber (22) of the hydraulic actuator (12) with a ...
|
|
WO/2023/110452A1 |
The invention relates to a hydraulic system (1) with at least two pressure-regulating pilot valves (2, 3) in a parallel circuit in order to set a working pressure (p_A). Each of the pressure-regulating valves (2, 3) has a valve slide (2A...
|
|
WO/2023/104322A1 |
A positioner drive for controlling a pneumatic positioner, is described with a shape memory alloy actuation element, wherein the shape memory alloy actuation element is configured to be mechanically coupled to a valve of the valve positi...
|
|
WO/2023/103208A1 |
A synchronous control valve, comprising a shuttle valve (12) and two first load sensitive valve groups (11). Each first load sensitive valve group comprises a reversing valve (111) and a differential pressure valve (112); the differentia...
|
|
WO/2023/097882A1 |
Provided in the present invention are a pilot control system, an integrated valve block and an operation machine. The present invention relates to the field of hydraulic control. The pilot control system comprises a decompression overflo...
|
|
WO/2023/098717A1 |
A multi-way control valve and a construction machine. The multi-way control valve comprises: a value body (10), the valve body (10) being provided with a first inlet (11) and a second inlet (12); a first travel switching valve core (20),...
|
|
WO/2023/097928A1 |
A hydraulic system for downhole sliding sleeve zone selection and opening degree control, comprising: a zone selection nipple (4) comprising a group of hydraulic input ports, a group of hydraulic output ports, and a first group of hydrau...
|
|
WO/2023/097872A1 |
An anti-deviation crawler travel hydraulic system, comprising a power module, a travel module and a control module. The power module and the control module respectively communicate with the travel module. The power module comprises an oi...
|
|
WO/2023/092871A1 |
A working link, a valve port independent control type multi-way valve, and an engineering machine. The working link can realize independent control over an oil inlet and an oil outlet, and can use a manual control mode, an electro-hydrau...
|
|
WO/2023/092667A1 |
A hydraulic system with an electro-proportional control multi-working-position valve, and a control method thereof. The system comprises: a first main pump (2), a second main pump (3), a pilot hydraulic-control joystick group, an arm cyl...
|
|
WO/2023/092666A1 |
Disclosed in the present invention are an adjustable load pressure compensation balance system, an end cover and a balance valve. The adjustable load pressure compensation balance system comprises: a variable damping control module for r...
|
|
WO/2023/090500A1 |
The present invention provides a compressed air processing system capable of efficiently controlling compressed air supply and regeneration operations of the compressed air processing system by means of an electronic control device. In p...
|
|
WO/2023/088590A1 |
The present disclosure relates to a directional control valve system for controlling a hydraulic consumer, a control section for controlling a hydraulic consumer, and a method for controlling a hydraulic consumer, wherein the return flow...
|
|
WO/2023/083881A1 |
In a method for operating a fluid system (11), which fluid system has a control device (19) having a control functionality and has a piezo valve arrangement (20) which can be controlled by the control device (19), the method proceeds wit...
|
|
WO/2023/082234A1 |
A hydraulic system, comprising an oil tank (15), a first control valve (1) and a second control valve (2). The first control valve (1) comprises a first oil input valve port (P1), a first oil return valve port (T1), a first output valve ...
|
|
WO/2023/086556A1 |
The subject matter of this specification can be embodied in, among other things, a method that includes controlling, by a first fluid valve, a first fluid flow to a first fluid actuator, actuating, by the first fluid actuator, an output,...
|
|
WO/2023/082233A1 |
A valve group, comprising a valve plate (1), and a hydraulic reversing valve (2), an electromagnetic valve (3), a hydraulic lock group, a sequence valve (4) and a first overflow valve (7) provided on the valve plate (1). The valve plate ...
|
|
WO/2023/081726A1 |
A method of manufacturing a fluidic actuator that comprising generating a member that includes a web and a pair of cavities and closing the cavities by closing one or more respective openings of the cavities to generate a first closed bl...
|
|
WO/2023/077630A1 |
The present invention belongs to the field of hydraulic technology, and provides a reversing valve. The reversing valve solves the problems of a large settling volume of an existing oil cylinder in a pressure maintaining state, and of a ...
|
|
WO/2023/070969A1 |
A hydraulic control valve group, a hydraulic system, and an operation machine. The hydraulic control valve group comprises a proportional valve (1) and a pressure regulating valve (2), wherein the pressure regulating valve (2) comprises ...
|
|
WO/2023/070929A1 |
A quantitative and constant-variable switchable hydraulic system, and a control method therefor and an operation machine. The hydraulic system comprises: an oil tank (11); a working pump (12); a control oil cylinder (13) which is configu...
|
|
WO/2023/050660A1 |
An oil drain valve (100) and an energy accumulation device (200) comprising same, a hydraulic system, and a working machine. The oil drain valve comprises a valve body (1), a valve core (2), and an elastic element (3); the valve body is ...
|
|
WO/2023/045010A1 |
Embodiments of the present application provide a conversion device, a braking system, and a train, relating to the field of trains. The conversion device comprises a valve body, a bonnet, and a first narrow hole part; the valve body is p...
|
|
WO/2023/041113A1 |
For connecting high pressures and flows, a safety valve comprises: a first main stage which, in a rest position, connects the fluid outlet to a first relief outlet and, in a switched position, connects a fluid inlet to a fluid connection...
|
|
WO/2023/041444A1 |
A hydraulic system comprising: a hydraulic fluid pressure source, a hydraulic fluid reservoir, a hydraulically driven actuator having a first chamber and a second chamber, and a valve assembly having a first pilot-operated directional co...
|
|
WO/2023/036683A1 |
The invention relates to a hydraulic drive (1) for a mobile working machine, preferably an excavator with a swingable hydraulic machine (4) which is hydraulically connected to first load cylinders (44), drives same, and can regenerate po...
|
|
WO/2023/035794A1 |
A hydraulic system for a rotary machine tool, comprising an oil tank, a main pump, a control valve, and a rotary motor. The oil tank is connected to an oil suction port of the main pump. An oil outlet of the main pump is connected to a p...
|
|
WO/2023/034048A1 |
A valve assembly includes a valve body that houses valve components for controlling a flow of fluid through the valve body, and a solenoid component that controls operation of the valve components. The solenoid component includes a conne...
|
|
WO/2023/029291A1 |
A brake control servo valve which has rapid pressure relief protection, the valve consisting of a torque motor (11), a jet amplifier (12), a pilot stage (13) and a power stage. The power stage comprises a hydraulic solenoid valve (2), a ...
|
|
WO/2023/025833A1 |
The invention relates to a method for actuating an actuator (140) using an input unit (160). An electric target value signal (162) output by the input unit (160) is detected and is filtered using a filter function (174) so that a filtere...
|
|
WO/2023/020340A1 |
The present invention belongs to the technical field of engineering machinery. Disclosed are an integrated control valve, an automatic rod-unloading-tong hydraulic system of a rotary drilling rig, and a rod-unloading tong. The integrated...
|
|
WO/2023/018125A1 |
A hydraulic system according to an embodiment of the present invention comprises: a main hydraulic pump for discharging a hydraulic fluid; a plurality of driving apparatuses operating by receiving the hydraulic fluid; a parallel flow pat...
|
|
WO/2023/016840A1 |
A fluid-operated control device for double-acting actuators includes a valve body which integrates a first overcenter valve in which the inlet is connected to a distribution device by means of a first connecting branch and the outlet is ...
|
|
WO/2023/014350A1 |
Submersible hydraulic power units with interchangeable manifolds for hydraulic systems are provided. In one embodiment, submersible hydraulic power unit ("SHPU") for moving hydraulic fluid between a first chamber and a second chamber of ...
|
|
WO/2023/014537A1 |
A spool (120) for a spool valve assembly (100) defines a spool longitudinal axis (122) and includes a first land module (130) defining a first land module circumferential surface (132), a second land module (140) defining a second land m...
|
|
WO/2023/005475A1 |
A falling control method and system, and a crane. The falling control system is connected to a variable amplitude cylinder (610) of the crane, and a rod cavity of the variable amplitude cylinder (610) is connected to an electrical propor...
|
