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JP2024011056A |
An object of the present invention is to eliminate the need to change the control program for a controller when adding a function corresponding to a predetermined loading state to an existing loading platform lifting/lowering device, the...
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JP2024008001A |
An object of the present invention is to provide an in-pipe mobile robot that can suppress failures of actuators in a pipe. [Solution] Intra-pipe movement comprising a movable body provided in a pipe, and a fluid control device that caus...
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JP2024008005A |
An object of the present invention is to provide a pipe inspection robot that can stand still inside a pipe. [Solution] An outer cylinder made of an elastic body, an inner cylinder provided inside the outer cylinder, and an inner cylinde...
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JP2024005340A |
An object of the present invention is to easily grasp the condition of seal parts installed in hydraulic equipment, and to provide maintenance information to enable maintenance at an appropriate timing that balances work timing and the l...
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JP2024006509A |
[Problem] In the case where a closed circuit is configured between an actuator for driving a working device and a plurality of hydraulic pumps to drive the actuator, operability when a pressure sensor that measures the pressure of the ac...
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JP2024005341A |
The present invention enables maintenance at an appropriate time by predicting and determining the sealing state of seal components installed in hydraulic equipment and presenting that information to the user. [Solution] A state monitori...
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JP7409274B2 |
To provide an industrial vehicle brake system that can properly recognize an abnormality of a function of pressure-accumulating hydraulic oil in accordance with a gas temperature of a pressure-accumulated gas.An industrial vehicle brake ...
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JP7396365B2 |
[Problem] To provide a failure diagnostic system and a failure diagnostic method for detecting failure of a valve to hold a liquid. [Solution] A failure diagnostic system (10) provided with: a hydraulic cylinder (20); a tank (22) in whic...
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JP2023172743A |
To provide a hydraulic circuit system with an abnormality diagnosis function that can determine an abnormality of a hydraulic circuit.A hydraulic circuit system with an abnormality diagnosis function comprises at least one positive displ...
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JP7387738B2 |
A method for controlling a cylinder includes providing a cylinder having a piston, a servo valve and a measuring device having at least one first position sensor and one second position sensor, measurements are taken of the position of t...
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JP2023549363A |
A subsea safety valve actuation system in oil well piping including a safety valve, a piston assembly, a motor, a pump, a spring, a reservoir, a first valve, and a second valve, the system comprising: a safety valve in an open position; ...
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JP7385366B2 |
To provide a hydraulic control device that can improve safety of facilities without performing large-scale construction such as a piping change.A hydraulic control device (2) comprises a manifold block (10), and a plurality of control va...
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JP7376781B2 |
To provide a hydraulic unit capable of issuing a warning before abnormal stop.A hydraulic unit (1) includes: a hydraulic oil tank 10 for storing hydraulic oil; a hydraulic pump (30) that sucks the hydraulic oil in the hydraulic oil tank ...
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JP7365597B2 |
To provide an actuator abnormality diagnostic system in which maintainability of an actuator has been improved, and to provide a component mounting device.An actuator diagnostic system includes: an actuator having a cylinder and a valve;...
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JP7360605B2 |
[Problem] To provide a failure diagnostic system and a failure diagnostic method for identifying the location of a failure in a hydraulic device. [Solution] A failure diagnostic system (10) comprises: a first pressure measurement unit (4...
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JP2023147951A |
To further enhance safety at the occurrence of an abnormality, in a robot device including a fluid actuator for relatively turning two links which are connected to each other via a joint.A fluid supply device 10 of a robot device 1 inclu...
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JP2023146909A |
To provide a hydraulic power unit capable of determining leakage of a working fluid in a hydraulic cylinder.A control portion (20) of a hydraulic unit (1) measures the total sum of a rotational frequency of a motor (13) detected by a rot...
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JP7357465B2 |
A hydraulic system includes: a solenoid valve that includes a valve spool configured to slide within a housing, and moves the valve spool to a position corresponding to an operation command input to the solenoid valve; and a control devi...
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JP2023140764A |
To provide a work machine in which pressure applied to an oil cooler is reduced.A work machine comprises: a direction selector valve which can switch hydraulic oil output from an oil hydraulic motor between a first position for returning...
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JP7324654B2 |
A hydraulic system of a construction machine includes: control valves interposed between a main pump and hydraulic actuators; and first solenoid proportional valves connected to pilot ports of the control valves. The hydraulic system fur...
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JP7324655B2 |
A hydraulic system of a construction machine includes: control valves interposed between a variable displacement main pump and hydraulic actuators; and first solenoid proportional valves connected to pilot ports of the control valves. Th...
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JP7324114B2 |
Provided is a construction machine that can measure a minute leakage flow rate of a unilateral tilt-type variable displacement hydraulic pump. In a state in which communication between a discharge oil passage of the hydraulic pump and ...
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JP7315599B2 |
To provide a highly reliable hydraulic control system that drives and controls a hydraulic device, and can stably control the hydraulic device even if the pulsation frequency of hydraulic pressure is changed.A hydraulic control system co...
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JP7308683B2 |
To provide an emergency escape device of a hydraulic work machine which facilitates work for allowing the hydraulic work machine with an abnormality occurring therein to escape from a work site, such as a railway truck, to a safe place.A...
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JP7304423B2 |
A pressure control valve for open-loop or closed-loop control of a pressure of a compressed fluid in a pilot pressure chamber includes a valve housing with at least one inlet and at least one outlet, a wall section fixedly connected with...
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JP7301702B2 |
To provide a construction machine and a system for calculating cylinder component replacement time which enable a seal component of a hydraulic cylinder to be replaced at appropriate time and can prevent the hydraulic cylinder defects.A ...
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JP7297617B2 |
Provided is an electrohydrostatic actuation system including an emergency shut-off circuit to be actuated stably with a simple configuration. The electrohydrostatic actuation system includes: a hydraulic cylinder (24) including a piston ...
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JP7297596B2 |
A hydraulic system of a construction machine includes: control valves interposed between a main pump and hydraulic actuators; and first solenoid proportional valves connected to pilot ports of the control valves. The hydraulic system fur...
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JP7285736B2 |
A hydraulic system of a construction machine includes: control valves interposed between a main pump and hydraulic actuators; and first solenoid proportional valves connected to pilot ports of the control valves. The hydraulic system fur...
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JP7275860B2 |
To provide an abnormality detection device that can properly detect an abnormality by reducing influence of temperature.An abnormality detection device (6) for detecting an abnormality of a drive device with an air cylinder (5) includes:...
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JP7267879B2 |
To provide a steam turbine valve drive unit which can perform a quick close motion at high reliability.The steam turbine valve drive unit comprises a piston, a cylinder, a two-way pump, a servo motor, an oil storage part, a quick close d...
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JP7265700B2 |
To prevent a door from moving suddenly at the reboot, in a food machine for opening and closing a door of a treatment tank by using an air cylinder.A food machine includes an air cylinder 7 for sliding a door 4 of a treatment tank 2 to t...
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JP7264312B2 |
A liquid supply apparatus in the present disclosure supplies a liquid to at least one artificial muscle which is actuated when supplied with a liquid. The liquid supply apparatus includes: a liquid reservoir portion for reserving a liqui...
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JP7264097B2 |
To provide a working fluid diagnosis system which can determine the proper exchange timing of a working fluid, and a working fluid diagnosis method.A working fluid diagnosis system 10 comprises: a pressure measurement unit 40 for measuri...
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JP7254745B2 |
To determine whether fluid leakage is internal leakage or external leakage.In internal leakage determination processing, when pressure is not detected by a pressure sensor 63 and a flow rate is not detected by a discharge-side flow rate ...
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JP7253933B2 |
A hydraulic drive system includes: a first hydraulic pump of the variable capacitance type; a first regulator including a first proportional valve; a second hydraulic pump that dispenses operating oil; a switch valve; a control device; a...
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JP7251384B2 |
To provide an information processing unit or the like for an abnormality determination excellent in reliability of the abnormality determination.An information processing unit 2 is an information processing unit for determining an abnorm...
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JP7249775B2 |
An objective of the present invention is to prevent a spool from being stuck even if foreign substances are pulled into the spool. A fluid pressure driving apparatus (1) comprises: a control flow valve (2) having a movable unit (2a) and ...
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JP7249835B2 |
To provide a device and method capable of easily detecting an abnormal sign in a hydraulic control system.A state detection device 20 that detects a state in a hydraulic control system 1 that controls a hydraulic mechanism 4, comprises: ...
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JP7245643B2 |
A wing flap system (300) for an aircraft, comprising four flaps (112,114,118,120) configured to be moved between respective deployed positions and respective retracted positions, the flaps being configured to be moved relative to fixed t...
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JP2023505480A |
The present invention has multiple valve block inputs for respective connections to the pressure outputs of one or more hydraulic fluid pumps and multiple valve block outputs for outputting pressurized hydraulic fluid. and located betwee...
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JP2023503783A |
The present disclosure relates to the field of fluid process systems and discloses a manifold system (300) for fluid delivery. The system (300) comprises a first set of solenoid valves (SOV) [(V1-V2), (V1-V3)], a second set of SOVs [(V4-...
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JP7210361B2 |
To provide a wheelchair capable of speeding up the motion of a hydraulic cylinder installed in the wheelchair and capable of taking measures to meet inability of a power unit.The wheelchair includes: main stairs pivotally installed in a ...
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JP7197438B2 |
To provide a construction machine which can finely adjust a stroke of a single-rod type hydraulic cylinder for driving a working machine when performing assembling or maintenance inspection.When an assembling/maintenance mode is selected...
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JP7165107B2 |
It is made possible to prevent damage to hydraulic parts of a work machine due to a decrease in performance of a hydraulic fluid even when the hydraulic fluid of a hydraulic system is changed and the hydraulic fluid becomes a mixed oil i...
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JP2022545474A |
A method for monitoring the condition of a device (1), the device (1) having a first drive cylinder (10a) for receiving hydraulic fluid (HF) and movable within the first drive cylinder (10a). a first drive piston (11a) positioned equidis...
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JP7151178B2 |
To prevent interruption of a work caused by failure while preventing increase in size of an air compressor.An air compressor 10 includes: a motor 13 driving a compression part; a control part 16 controlling the motor 13; air tanks 17, 18...
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JP7146669B2 |
To provide a construction machine comprising a function of detecting a stuck open of a poppet, which is connected to a low-pressure side of an actuator in the poppet installed in a selector valve, and suppressing unintentional actuator o...
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JP2022133616A |
To provide a work vehicle capable of protecting hydraulic piping and being manufacturable at a low cost.A work vehicle 1 includes a tractor 2 and a trailer 3. A hydraulic pump 5 on the tractor 2 side and a hydraulic motor 6 on the traile...
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JP7124759B2 |
To provide an abnormal diagnosis system that performs preventive maintenance on abnormality of a liquid pressure device, a cargo handling device comprising the abnormality diagnosis system, and an abnormality diagnosis method.An abnormal...
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