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HYDRAULIC SYSTEM FOR WORKING MACHINE AND HYDRAULIC CONTROL METHOD FOR WORKING MACHINE
A hydraulic system includes a control device to reduce a first movement speed to be lower than a second movement speed, the first movement speed being a speed at which a spool of a first control valve moves from a first supply position to a first stop position under a state where a second control valve is in the second supply position, the second movement speed being a speed at which the spool moves from the first supply position to the first stop position under a state where the second control valve is in the second stop position. The first supply position allows operation fluid to be supplied to a hydraulic actuator. The first stop position prevents the operation fluid from being supplied to the hydraulic actuator. The second stop position prevents the operation fluid from being supplied to a first fluid tube coupling a hydraulic pump to the hydraulic actuator.
HYDRAULIC SYSTEM FOR WORKING MACHINE AND HYDRAULIC CONTROL METHOD FOR WORKING MACHINE
A hydraulic system includes a control device to reduce a first movement speed to be lower than a second movement speed, the first movement speed being a speed at which a spool of a first control valve moves from a first supply position to a first stop position under a state where a second control valve is in the second supply position, the second movement speed being a speed at which the spool moves from the first supply position to the first stop position under a state where the second control valve is in the second stop position. The first supply position allows operation fluid to be supplied to a hydraulic actuator. The first stop position prevents the operation fluid from being supplied to the hydraulic actuator. The second stop position prevents the operation fluid from being supplied to a first fluid tube coupling a hydraulic pump to the hydraulic actuator.
HYDRAULIC SYSTEM FOR WORKING MACHINE AND HYDRAULIC CONTROL METHOD FOR WORKING MACHINE
NISHIMOTO RYUKI (author) / FUKUDA YUJI (author) / TOMITA JUN (author)
2020-02-13
Patent
Electronic Resource
English
| European Patent Office | 2019
HYDRAULIC SYSTEM FOR WORKING MACHINE, AND CONTROL METHOD OF WORKING MACHINE AND HYDRAULIC SYSTEM
| European Patent Office | 2021