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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/2022/182252A1 |
An agricultural wagon having a plurality of load sensors between a tow bar and a chassis. The load sensors are configured to sense the load of the wagon. The load sensors may sense the load of the wagon when it is supported on a tow coup...
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WO/2022/173350A1 |
A cylinder positioning system (1) comprising a control unit for a pneumatically driven cylinder (14) in a cylinder chamber is provided. The control unit comprising a controller configured to control a set of drive units of the cylinder p...
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WO/2022/084847A1 |
The invention relates to a prosthesis (1) for limbs of the human body, in particular the leg, actuated by means of an actuator (10) capable of both generating and collecting energy.The actuator is a linear electro-hydrostatic (EHA) one, ...
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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/2021/133187A1 |
The invention relates to robotics, in particular to servomotors for causing the components of a robotic manipulator to move. A servomotor comprises an electric motor, a cycloidal reducer, a torque sensor and a drive ring. The stator of t...
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WO/2021/084493A1 |
An actuating device (10) comprises a first (14) and a second (16) working chamber supplied with pressurized air from a source (18) of pressurized air by means of a first (20) and a second (22) pressure regulator, respectively, for regula...
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WO/2020/165991A1 |
Provided is a rotary drive device that has a wide rotary driving range, e.g. a rotary driving range of 0-180°. Disclosed is a rotary drive device (100) comprising: a crank member (2) that can rotate around a crankshaft (3); a first cyli...
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WO/2020/158352A1 |
A servo valve unit (20) that has: a unit body (10) that has a first end part (61a) and a second end part (61b); a first valve part (20R); a second valve part (20L); a first seal member (22) that opens/closes the first valve part (20R); a...
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WO/2020/157829A1 |
[Problem] To provide a servo valve unit that does not require a servo amplifier that can accurately control the position of an air pressure cylinder. [Solution] Disclosed is a servo valve unit (2) that actuates in accordance with first a...
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WO/2020/082179A1 |
A mechanical transmission system that transmits motions and forces from one location to another while allowing the relative position/orientation of the two locations to change continuously is disclosed. The system can be used to actuate ...
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WO/2019/120128A1 |
An enclosed hydraulic rock drill working system, comprising a hydraulic rock drill (18) and a water tank (2); the water tank (2) supplies water to the hydraulic rock drill (18) by means of a high pressure water supply system, and returns...
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WO/2019/047459A1 |
A high-precision digital hydraulic motor (7), which comprises a digital servo valve (3), a mechanical feedback mechanism (5), and a hydraulic motor (6). The high-precision digital hydraulic motor (7) integrates the digital servo valve (3...
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WO/2018/230469A1 |
In a control valve control device and a control valve adjustment method, provided are: an LVDT voltage processing unit (33) and an LVDT voltage detection unit (32) serving as a valve opening detection unit for detecting the degree of ope...
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WO/2018/226107A1 |
The invention relates to a machine that amplifies the drive torque of a moving shaft, which is formed by at least one pair of identical units facing a central shaft, each unit being formed by at least one mechanical actuator (cam), a hyd...
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WO/2018/152069A1 |
A stage assembly (10) includes a stage (14), and a fluid actuator assembly (24) that moves the stage (14). The fluid actuator assembly (24) includes a piston housing (32) that defines a piston chamber (34); (ii) a piston (36) that separa...
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WO/2018/074741A2 |
The present invention relates to an air compressor, a control device thereof, and an automobile shock absorber system using the same air compressor and control device, wherein a reciprocating air compressor, an exhaust actuator, and a pn...
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WO/2018/051300A1 |
Valve (1) for controlling the oil flow to a cylinder (10) provided with single hydraulic connection on one side only, the valve comprising a pneumatic drive group (9) configured to axially move a shutter (5) in the valve chamber in at le...
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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...
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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...
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WO/2017/151618A1 |
A servovalve comprising a motor, a motor bias mechanism, a first stage valve having a first position, a second stage valve movable with movement of the first valve, a reference member in fluid communication with the second valve, a trans...
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WO/2017/099664A1 |
A bearing arrangement for a unit that is mutually turnable around a centre of rotation (R) comprising an external part (1) and an internal part (7), which, with the aid of high hydraulically acting pressure, is arranged to achieve a reci...
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WO/2017/087146A1 |
A reciprocating drive mechanism. The reciprocating drive mechanism may comprise: a spool assembly and a spool housing. The spool assembly may be reciprocally movable within a spool chamber of the spool housing. The spool housing may comp...
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WO/2017/041848A1 |
The invention relates to a fluid system with a safety-related valve assembly (3) which has a first fluid connection (29) for fluidically connecting to a fluid connection of a fluid source (13) or of a control valve (2; 62), a second flui...
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WO/2016/099383A1 |
The bearing assembly, consisting of a stator component (S1) and a rotor component (R1), where the rotor component is adapted for a back-and-forth oscillatory movement (P, -P) relative to the stator component, whereby a number of cavities...
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WO/2016/065325A2 |
An example embodiment includes a hydraulic hybrid system. The hydraulic hybrid system includes a hydraulic system, an energy source configured to produce primary kinetic energy, an output configured to receive at least a first portion of...
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WO/2015/187655A1 |
An actuator synchronization system comprising a control valve in fluid communication with a plurality of actuators; each of the actuators comprising an input member moveable by the control valve, a main valve moveable from a null to an o...
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WO/2015/112862A1 |
An agricultural implement includes the use of one or more electromechanical hydraulic cylinder assembly in place of hydraulic cylinders. The assemblies may take various forms for actuation, and can convert an electric power source to hyd...
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WO/2015/106957A1 |
The invention relates to a pneumatic shifting force support device for a manual transmission, comprising a housing structure which has a compressed air inlet and a ventilation, a control rod (2), and an output unit (A) which comprises a ...
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WO/2014/141961A1 |
An actuator controller detects the displacement of a piston (7) in a first actuator (5), controls the first actuator (5) through feedback control, measures individual forces generated in the first and second actuators (5, 4), corrects th...
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WO/2014/130324A1 |
An energy recovery system (50) is disclosed for use with a hydraulic machine (10). The energy recovery system may have a tank (60), a pump (58) configured to draw fluid from the tank and pressurize the fluid, an actuator (28), and an act...
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WO/2013/172761A1 |
The present invention partly relates to an arrangement and partly a bearing arrangement (10) that can be turned by an assigned hydraulic pressure and flow, which bearing arrangement is related to a chain saw arrangement (101:1), which is...
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WO/2013/161357A1 |
Provided is three-port valve that can be more accurately controlled using a simple structure. The three-port valve is provided with the following: a first elastic tube (2a) in which a liquid circulates; a first port (2a1) which is a prov...
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WO/2013/102270A1 |
An electro/hydraulic circuit enabling two mechanical devices to shadow each other's movements without any direct mechanically-operative linkage between the devices. The two devices incorporate matching sets of hydraulic actuators for ind...
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WO/2013/089226A1 |
The difference between the target position and the current position of a piston is obtained. Further obtained are the pressure from proportional control proportional to said difference, the variable offset pressure based on the value obt...
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WO/2013/085416A1 |
A single-stage electrohydraulic amplifier with electrical feedback on consumption is intended for automatic systems where rapid-action electrohydraulic amplifiers are used, and comprises a summing operational amplifier with two inputs, t...
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WO/2013/056454A1 |
A method for controlling a hydraulic cylinder comprises: controlling the acceleration of a hydraulic cylinder when the hydraulic cylinder advances, and/or, controlling the acceleration of the hydraulic cylinder when the hydraulic cylinde...
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WO/2013/053668A1 |
Hydraulic servovalve (1) having two stages and feedback members, in which the moving power-distribution member (7) comprises means (8) of trapping the feedback member (6), allowing at least a movement of one trapped part of the feedback ...
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WO/2013/051741A1 |
Disclosed is a control system for preventing unnecessary pressure loss by switching a priority control valve to a throttle state or a throttle-release state, depending on a load amount that is generated from a hydraulic generator, when s...
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WO/2013/048283A1 |
The electrohydraulic amplifier comprises a summing operational amplifier with two inputs, a single-stage or two-stage controlling electrohydraulic amplifier, an input of which is connected to an output of the summing amplifier and which ...
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WO/2012/126376A1 |
Disclosed is a driving device, especially a hydraulic reciprocating servo control device, with the control device comprising a hydraulic driving system and a control system, which is characterized in that the hydraulic driving system com...
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WO/2012/102488A2 |
The present invention pertains to a hydraulic system for a construction machine having an electronic hydraulic pump. More specifically, the hydraulic system temporarily drives the construction machine when the operation of the electronic...
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WO/2012/087048A2 |
The present invention relates to a method for controlling a hydraulic pump in an excavator, and more particularly, to a method for controlling a hydraulic pump in an excavator for actuating an engine at the best engine revolution speed s...
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WO/2012/081197A1 |
Provided is an apparatus for controlling an elastic actuator drive mechanism, which determines abnormality of an output measuring means (8) by being provided with an abnormality determining means (49), which determines whether an output ...
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WO/2012/074145A1 |
Disclosed is a hydraulic pump control system for minimising flow loss by optimally limiting the discharge flow volume of the hydraulic pump when an upper swivel body is made to swivel abruptly. The hydraulic pump control system according...
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WO/2012/053672A1 |
Disclosed is a hydraulic system for a construction machine, which makes it possible to adjust the geometric position of a working device comprising a boom and an arm by means of a single manipulation lever, thereby enabling a leveling/fl...
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WO/2012/034165A1 |
An ultra high pressure pump comprising a servo motor coupled to a piston having a head arranged within a cylinder to define a pumping chamber, whereby the servo motor rotation causes reciprocal displacement of the piston to pressurise fl...
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