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A platform for research: civil engineering, architecture and urbanism
Hydraulic system for hydraulic working machine
Disclosed is a hydraulic system for a hydraulic excavator. The hydraulic system inputs rotary power from a rotary power producing means to a hydraulic pump to produce hydraulic power, and operates an actuator by the hydraulic power. A hydraulic oil drain line from the actuator is branched into a flow rate control line as a line connected to a spool of a flow rate control valve controllable by manipulation of a lever and a power regeneration line as a line connected to a variable displacement motor for converting hydraulic power of discharged hydraulic oil to reusable energy. A regeneration ratio control means is also arranged to control the variable displacement motor such that a flow rate of the power regeneration line satisfies a preset fixed ratio α relative to a flow rate occurred in the flow rate control line by the manipulation of the lever.
Hydraulic system for hydraulic working machine
Disclosed is a hydraulic system for a hydraulic excavator. The hydraulic system inputs rotary power from a rotary power producing means to a hydraulic pump to produce hydraulic power, and operates an actuator by the hydraulic power. A hydraulic oil drain line from the actuator is branched into a flow rate control line as a line connected to a spool of a flow rate control valve controllable by manipulation of a lever and a power regeneration line as a line connected to a variable displacement motor for converting hydraulic power of discharged hydraulic oil to reusable energy. A regeneration ratio control means is also arranged to control the variable displacement motor such that a flow rate of the power regeneration line satisfies a preset fixed ratio α relative to a flow rate occurred in the flow rate control line by the manipulation of the lever.
Hydraulic system for hydraulic working machine
HIGUCHI TAKESHI (author)
2016-11-08
Patent
Electronic Resource
English
HYDRAULIC SYSTEM FOR WORKING MACHINE AND HYDRAULIC CONTROL METHOD FOR WORKING MACHINE
| European Patent Office | 2020