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WO/2024/071664A1 |
The present invention relates to a cylinder predictive maintenance method using differential pressure, the method comprising: collecting a differential pressure waveform of an operating interval, in which a cylinder rod advances and retr...
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WO/2024/071598A1 |
The present invention relates to a method for predictive maintenance of a cylinder using a pressure difference, wherein a pressure difference between the internal pressure of the cylinder and the internal pressure of a main pipe for supp...
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WO/2024/071663A1 |
The present invention relates to a method for predictive maintenance of a cylinder using differential pressure, wherein: the differential pressure between the internal pressure of a cylinder and the internal pressure of a main pipe, whic...
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WO/2024/071597A1 |
The present invention relates to a method for predictive maintenance of a cylinder using a pressure difference, wherein a pressure difference between the internal pressure of the cylinder and the internal pressure of a main pipe for supp...
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WO/2024/052287A1 |
The invention relates to a position controller (1) for a pneumatic actuator for actuating a control fitting, such as a control valve, of a process plant, said position controller comprising: an electro-pneumatic converter (3), such as an...
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WO/2024/052272A1 |
The invention relates to a position controller (1) for a pneumatic actuator for actuating a control fitting, such as a control valve, of a process plant, which position controller comprises: an electro-pneumatic converter (3), such as an...
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WO/2024/046697A1 |
The invention relates to an electrohydraulic actuator (1), comprising at least one bidirectionally operable hydraulic pump (2) for conveying hydraulic fluid, said hydraulic pump having two connection points (6a, 6b) which are designed to...
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WO/2024/036686A1 |
An aerial work platform emergency descent system and a control method, relating to the field of aerial work platforms. The aerial work platform emergency descent system comprises a telescopic hydraulic cylinder (100), a balance valve (20...
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WO/2024/028550A1 |
The invention relates to an actuating system (2) comprising an actuator comprising a servo-cylinder (4), the servo-cylinder (4) having a rod (10) provided with a piston (12), the actuator having a device (14) for positioning the piston (...
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WO/2024/009966A1 |
The purpose of the present invention is to provide a construction machine capable of suppressing a decrease in operability when a pressure sensor that measures the pressure of an actuator for driving a work device has malfunctioned in a ...
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WO/2024/004092A1 |
A fluid control device (10) comprises: a pressure regulating valve control unit (76) that controls a pressure regulating valve (50) so as to output a fluid from the pressure regulating valve at a second pressure (P2) lower than a first p...
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WO/2024/004407A1 |
The present invention addresses the problem of suppressing an increase in pressure in a hydraulic circuit. In order to solve this problem, this hydraulic circuit has: a first oil path that links to a discharge port of a first oil pump; a...
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WO/2023/242249A1 |
The present invention relates to a device for controlling a fluid-operated actuator unit. The device comprises a first control valve and a second control valve arranged in series with the first control valve. The first control valve and ...
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WO/2023/232331A1 |
The invention relates to a valve arrangement for a mobile working machine (1), said valve arrangement comprising: a hydraulic consumer (47, 50); at least one directional control valve (30, 31, 55, 64) which is connected to a pressure lin...
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WO/2023/232330A1 |
The invention relates to a mobile hydraulic working machine (1) comprising a superstructure (4), a substructure (2), a boom assembly (7) having a shaft (10), an attachment (14) connected to the shaft (10), and a hydraulic system for movi...
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WO/2023/228505A1 |
This hydraulic circuit system equipped with an abnormality diagnosis function comprises: at least one volumetric pump; a hydraulic circuit connected to the pump; a downstream-side sensor for detecting a state amount of a working fluid fl...
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WO/2023/217935A1 |
The invention relates to a pneumatic actuator system (1; 41; 61) comprising an actuator (2; 52) which has an actuator housing (3) having a work recess (4) in which a drive element (5) is movably accommodated, which drive element delimits...
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WO/2023/214880A1 |
An actuator system (100, 100B) for use with a safety critical valve, the actuator system (100, 100B) comprising: a low-pressure accumulator (200, 200B) comprising a first energy store and a first hydraulic fluid chamber (220, 220B); a hi...
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WO/2023/208440A1 |
The invention relates to a method for operating a fluid reservoir system (2) having at least one fluid tank (4), in which the fluid is stored under pressure; at least one valve unit (6) that is functionally paired with the fluid tank (4)...
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WO/2023/200678A1 |
A hydraulic actuator assembly operatively configured to hydraulically connect to a tank of an aircraft comprising a hydraulic cylinder orientated about a center axis and having first and second hydraulic ports, a piston disposed in the c...
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WO/2023/190329A1 |
Provided is a construction machine comprising a plurality of hydraulic actuators, a hydraulic pump that ejects pressure oil to drive the hydraulic actuators, an engine that drives the hydraulic pump, a plurality of operation lever device...
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WO/2023/189343A1 |
An electric work machine (1) comprises: a battery unit (30); an electric motor (9); an inverter (38) that supplies power from the battery unit to the electric motor and drives the electric motor; hydraulic pumps (P1, P2) that are actuate...
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WO/2023/179803A1 |
A hydraulic load hierarchical control system and method for an indirect wave energy apparatus. The system comprises a first hydraulic cylinder group (1), a second hydraulic cylinder group (2), a third hydraulic cylinder group (3), a high...
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WO/2023/174643A1 |
The invention relates to a valve module system (1) for providing a compressed-air consumer (82) with compressed air, wherein valve modules (4) are provided with differently configured channel plates (5) for the purpose of fluidic communi...
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WO/2023/158928A1 |
An actuator includes a primary piston and a secondary piston axially movable together in a cylinder assembly; a plurality of chambers comprising: a first chamber, a second chamber, a third chamber, and a fourth chamber, wherein when flui...
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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...
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WO/2023/148212A1 |
The invention relates to a safety device (10) for a linearly actuated process valve (30) and to a system comprising the safety device (10). The safety device (10) comprises: a housing (1); a piston rod (3) which is mounted in the housing...
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WO/2023/148217A1 |
The invention relates to a linear actuator (20) for linear actuation of a process valve (30), said linear actuator having a housing (200), wherein an electronic control unit (40), at least one electric drive unit (41), and at least one h...
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WO/2023/126137A1 |
The invention relates to a hydraulic accumulator comprising an accumulator housing (18) and a separating element (10) which is arranged therein in a longitudinally movable manner and which separates two media chambers (12, 14) within the...
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WO/2023/116387A1 |
Provided in the present application are an emergency apparatus for operation machinery, and a fire-fighting truck. The emergency apparatus comprises an emergency power source expansion interface and a signal control apparatus, wherein af...
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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...
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WO/2023/111484A1 |
One aspect of the invention relates to a system (20) for transmitting commands to at least one hydraulic servo actuator (30), comprising: - a mechanical system (21) including: o a rotary electrical actuator (211) comprising a first and a...
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WO/2023/107388A1 |
The subject matter of this specification can be embodied in, among other things, a fluid actuator system including a fluid actuator having a housing having an inner wall defining an interior cavity, a piston having a piston head configur...
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WO/2023/100005A1 |
A control system (100) for hydraulic supply system on a tractor includes an electronic load sensing (E-LS) system. The control system is configured to limit the pump supply pressure PSP so that the load sensing pressure LSP reported by a...
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WO/2023/089364A1 |
Present disclosure discloses a retrofittable valve (7) for a hydro-pneumatic accumulator (50). The retrofittable valve includes a body (7a) defining a first cavity (8a) extending from a distal end (D), where the first cavity is structure...
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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,...
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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 ...
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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...
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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...
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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...
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WO/2023/020715A1 |
PROBLEM: To provide a relief pressure control device in which a relief pressure can be set easily, and further power consumption is suppressed. SOLUTION: A relief pressure control device (8) is equipped with a relief valve (5) in which a...
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WO/2023/005732A1 |
A power system and a travelling power station, relating to the technical field of engineering machinery. The power system comprises a first main pump, a second main pump, an auxiliary pump, a first switching unit, a first logic unit, a s...
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WO/2023/006482A1 |
Pressure accumulator with an accumulator housing (10), in which a movable separating element (16) separates a medium space (12), preferably filled with a working gas, from a fluid space (14) in a fluid-tight manner, wherein a monitoring ...
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WO/2023/006207A1 |
The invention relates to a safety valve (100) for a pneumatic conduit (798), in particular in a pneumatic actuator (800), the safety valve (100) comprising: - a valve body (120), arranged in the pneumatic conduit (798), the valve body co...
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WO/2023/006206A1 |
The invention relates to a safety valve (100) for a pneumatic conduit (798), in particular in a pneumatic actuator (800), the safety valve (100) comprising: • a valve body (120), arranged in the pneumatic conduit (798), the valve body ...
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WO/2023/002519A1 |
This liquid pressure apparatus monitoring system comprises: a liquid pressure apparatus; liquid pressure sensors (110, 150) for monitoring the liquid pressure inside the liquid pressure apparatus; display devices (230, 250) for displayin...
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WO/2022/264051A1 |
Control and safety system (200, 300) suitable for conveying circuits of pressurized fluids equipped with at least one process valve, said system comprising : - a pressure reducer (16), - a pilot element (24), - a control valve (25), - a ...
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WO/2022/248836A1 |
A hydraulic demultiplexer or multiplexer for providing hydraulic actuation of a plurality of robotic components wherein the hydraulic demultiplexer or multiplexer comprising an arrangement of hydraulically-controlled and hydraulically-op...
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WO/2022/248796A1 |
The present invention relates to a pitch-change mechanism for a turbine engine propeller, said turbine engine comprising a stator portion and a rotor portion, said pitch-change mechanism comprising an electrohydraulic actuator comprising...
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WO/2022/234546A1 |
A manifold system 100 with 2oo3 configuration is disclosed having three solenoid valves 102 and two shuttle valves 108 operatively coupled to the three solenoid valves 102. The manifold system 100 includes an external pilot operated logi...
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