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Matches 101 - 150 out of 2,401

Document Document Title
WO/2020/105335A1
In order to provide an error detection device having excellent convenience, this error detection device (6) comprises: an operation time acquisition unit (611) that obtains a plurality of operation times for a plurality of air cylinders ...  
WO/2020/074338A1
The invention relates to a hydraulic system (7) for use under water with a hydraulic actuating drive, wherein there are a hydraulic cylinder (15) and at least one hydraulic machine (48, 49), wherein at least one rotary drive device (54, ...  
WO/2020/054496A1
The objective of the present invention is to detect an abnormality in an actuator using a displacement time of a movable portion, irrespective of the ambient temperature and the type of actuator. An abnormality detecting device (10) dete...  
WO/2020/056126A1
Methods, apparatus, systems and articles of manufacture are disclosed for a positioner apparatus for use with fluid valves. An example apparatus includes a fluid valve, an actuator operatively coupled to the fluid valve, and a positioner...  
WO/2020/044175A1
A diagnostic method to diagnose a malfunction of a solenoid valve comprises: a) detecting the first current peak (IPEAK) of the solenoid current generated by the engagement of the movable core; b) verifying if the waveform of the solenoi...  
WO/2020/031974A1
Provided is a hydraulic drive device for a work machine with which the frequency of maintenance can be reduced. A controller (20) opens a first opening/closing valve (25a), closes a second opening/closing valve (25b), switches a first di...  
WO/2020/031973A1
A fluid leak detecting system (100) is provided with a measuring unit (10) for detecting a leak of operating oil from a hydraulic cylinder (1), and a controller (80) which acquires a measurement result from the measuring unit (10), where...  
WO/2020/027135A1
In the present invention, a hydraulic oil filter is determined to be clogged in a case where: a pump flow rate discharged from a hydraulic pump and/or a flow rate that flows into the hydraulic oil filter is less than a pump flow rate thr...  
WO/2020/025766A1
The present invention relates to an air supply unit (1) for high pressure applications, comprising an integrated air treatment unit (18) with an air inlet (20), an air outlet (22), and an exhaust port (70). The air supply unit further co...  
WO/2020/016697A1
A control and safety system (100, 200) suitable for conveyance circuits of pressurized fluids provided with at least one process valve, said system having a pressure reducer (16), a control valve (17, 25), a secondary valve (18, 26), a d...  
WO/2020/001766A1
A control device and method for controlling a disengaging actuator (1) of a tool attachment, the device comprising a three-state switch (2), with a middle neutral position (20), a first end position (21), and a second end position (22), ...  
WO/2019/235610A1
Provided is a construction machine in which it is possible by the use of a simple configuration to determine which one of a plurality of hydraulic actuators is abnormal. This construction machine is provided with a first flow rate detect...  
WO/2019/223860A1
The invention relates to an operating means (10), in particular a control head, a setting regulator, a positioner, and/or a sensor actuator, for process automation for use in fields in which there is a risk of explosion and dust can occu...  
WO/2019/224874A1
This degradation detection system (1) is provided with: a storage unit (11) which stores therein actual measurement values of command pressure and actual measurement values of response pressure; and a simulation unit (12) which, using a ...  
WO/2019/220564A1
A hydraulic system comprising: an operation device; a control valve that increases the opening area of a passage for supplying hydraulic oil to a hydraulic actuator as an operation signal output from the operation device increases; a var...  
WO/2019/212003A1
This fluid leak detection system (100) is provided with a detection space (20) into which is guided hydraulic oil leaked from a rod seal (11) sealing an annular gap (8) between a piston rod (3) and a cylinder head (5), a sensor unit (30)...  
WO/2019/202998A1
The purpose of the present invention is to quantitatively or qualitatively monitor bubbles included in hydraulic oil. This system for monitoring hydraulic oil is provided with: an image data obtainment unit (51) which obtains image data ...  
WO/2019/198183A1
A work vehicle comprises: a hydraulic pump driven by an engine; a hydraulic actuator driven by hydraulic fluid supplied from the hydraulic pump; a switching valve that can switch from a first state in which the hydraulic fluid supplied f...  
WO/2019/197813A1
A hydraulic manifold is formed in one piece. It comprises an exterior wall defining an inner space within which there is at least one flow gallery for conveying hydraulic fluid. The flow gallery provides a fluid flow path and is bounded ...  
WO/2019/187564A1
Provided is a hydraulic-oil information notifying device enabling an appropriate check on the amount of hydraulic oil regardless of an operating condition of hydraulic cylinders provided in a construction machine. The construction machin...  
WO/2019/182090A1
This work vehicle is provided with a loading and unloading hydraulic circuit (A) including at least a main hydraulic pump (31), a lifting arm cylinder (8), and a control valve (32), an auxiliary hydraulic pump (31), a negative-type parki...  
WO/2019/157097A1
In various implementations, a self-coupling initiator includes one or more integrated features that allow the initiator to be installed within a housing tube without a forming or fastening operation. For example, in some implementations,...  
WO/2019/154607A1
A piston accumulator, comprising an accumulator housing and a separator piston (8) which is guided such that it can move longitudinally in said housing and which separates a liquid side (4) from a gas side (10) in the accumulator housing...  
WO/2019/143408A1
A redundant balance line operating system including first and second control lines, first and second balance lines, a first and second compensators and first and second actuators, the components being hydraulically connected to operate r...  
WO/2019/143513A1
Methods, apparatus, systems and articles of manufacture are disclosed to diagnose a pneumatic actuator-regulating accessor. An example method disclosed herein includes stroking a fluid valve operatively coupled to a field instrument and ...  
WO/2019/138921A1
Provided is a work vehicle with which it is possible to suppress an erroneous operation of a work unit caused by malfunctioning of a controller due to a failure or the like. Provided is a wheel loader equipped with: a work unit (20); a h...  
WO/2019/086424A1
The invention relates to a valve (V, V1, V2) having a housing (VG) and a piston (VK) which is guided slidably therein, wherein: a first end (VK1) of the piston (VK) can be subjected to a force by means of which the piston (VK) can be sli...  
WO/2019/072328A1
The aim of the invention is to provide a valve arrangement for controlling pneumatic drives, with protection against sudden unprompted changes to the initial switching position without reception of an input signal there is a fault in a r...  
WO/2019/065160A1
This abnormality detection device (1) for a fluid pressure actuator (A) is configured to be provided with: a displacement detector (2) that detects a displacement of the fluid pressure actuator (A) which is elastic; an operated-amount de...  
WO/2019/054234A1
Provided is construction machinery with which it is possible to suppress the unintended operation of a hydraulic actuator even when a double discharge pump breaks down in a hydraulic closed circuit system. A hydraulic closed circuit syst...  
WO/2019/034529A1
The invention relates to a safety system with a valve block (10) to which at least one gas safety valve (12, 14) is detachably connected, comprising at least one controllable valve (50, 52, 58) in or on the valve block (10) and at least ...  
WO/2019/036561A1
A hydraulic power unit (HPU) configured for use with a pressure relief valve (PRV) having an open port and a close port is provided. The HPU includes a pneumatic primary pump, a hydraulic fluid reservoir, an accumulator, and a two positi...  
WO/2019/036131A1
A grounded FRL for treating a pressurized air supply has a housing with a connecting mechanism for connecting to a collector bowl. The collector bowl is made from a metal base material and has an open end with a connecting mechanism and ...  
WO/2019/022229A1
An automatic brake system (24) is configured to include: second accumulators (25F, 25R); a front side second pipeline (28) and a rear side second pipeline (29); second brake valves (30F, 30R); a first electromagnetic switching valve (32)...  
WO/2019/017318A1
Provided is a hydraulic drive device that makes it possible to operate a hydraulic actuator in accordance with operation of an operation device, even when there has been a failure in an electromagnetic proportional control valve or a wir...  
WO/2019/006546A1
A communication module and associated method of operation for controlling a valve bank including at least one fluid valve is provided. The communication module includes a module body mechanically and electrically coupled to the fluid val...  
WO/2019/004181A1
Provided is an operation control system capable of preventing undesired motion of a rudder plate driving unit. The operation control system is provided with a rudder plate driving unit, a hydraulic pump, a directional control valve, a sh...  
WO/2019/004182A1
Provided is a steering control system capable of preventing undesired operation of a rudder plate driving unit at the occurrence of a failure. The steering control system is provided with: a steering device including a rudder plate drivi...  
WO/2018/225102A1
The present invention relates to a safety valve 20 for a hydraulic system. The valve comprises: an inlet 21, an outlet 22, and a channel 23. For the valve, a maximum operating flow rate Qm of the oil is predetermined. The channel guarant...  
WO/2018/193807A1
This fluid pressure control device (100) is provided with a supply passage (21), a discharge passage (22), actuator control valves (30, 40) which control the flow of a hydraulic oil supplied to and discharged from actuators (15, 16), a s...  
WO/2018/194091A1
A hydraulic system equipped with: an electromagnetic proportional valve connected to a regulator via a secondary pressure line and connected to an auxiliary pump via a primary pressure line; an emergency line that branches from the prima...  
WO/2018/179863A1
[Problem] To provide a construction machine equipped with a hydraulic closed circuit system which can inhibit unintended operation of a hydraulic actuator and continue the operation of a machine body even when a switching valve is stuck ...  
WO/2018/178861A1
A system for detecting leaks in a hydraulic supply system for a double-acting hydraulic actuator is disclosed. The system may include a first conduit in fluid communication with a first chamber of the actuator, and with a second chamber ...  
WO/2018/179070A1
The objective of the present invention is to provide a hydraulic control system for a working machine with which it is possible to detect an abnormality in a pump output switching device irrespective of the state of the abnormality of th...  
WO/2018/178961A1
This hydraulic system comprises: a first proportional solenoid valve and a second proportional solenoid valve that, the larger the operation signal output from a first operation device and a second operation device, output a higher secon...  
WO/2018/178960A1
This hydraulic system comprises: an operation device; a control valve that, the larger the operation signal output from the operation device, increases the opening area of a passage that supplies hydraulic oil to a hydraulic actuator; a ...  
WO/2018/166984A1
The disclosure concerns a method for controlling the pressure in the chambers of a hydraulic cylinder (1) having a meter-out chamber (2) and a meter-in chamber (3). A meter-out valve (7) is connected to the meter-out chamber (2) for regu...  
WO/2018/162243A1
The invention relates to a method for activating a hydraulic actuator drive comprising an actuator, the position of which is adjusted by at least one electrohydraulic proportional valve, which has at least one electrical input and at lea...  
WO/2018/153524A1
The invention refers to an arrangement and to a method to detect an oil leakage (LKG) between a first section (S1) of a hydraulic cylinder (HC) and a second section (S2) of the hydraulic cylinder (HC). A movable piston (MP) is arranged b...  
WO/2018/131118A1
This fan drive system is provided with: a hydraulic pump; a hydraulic motor that rotates a fan on the basis of a hydraulic oil supplied from the hydraulic pump; a data acquisition unit that acquires the actual rotation speed of the fan; ...  

Matches 101 - 150 out of 2,401