FLUID PRESSURE SYSTEM, PRESSURE ACCUMULATION METHOD OF ACCUMULATOR, AND OPERATION METHOD OF FLUID PRESSURE ACTUATOR

摘要

PROBLEM TO BE SOLVED: To provide a fluid pressure system which accumulates a pressure in an accumulator while operating an actuator.SOLUTION: A hydraulic system 100 supplies operating water and includes: a hydraulic pump 11 which discharges the operating water for operating hydraulic cylinders 1 to 4; a hydraulic pump 12 which is arranged in parallel to the hydraulic pump 11 and discharges the operating water; an accumulator 30 which accumulates a pressure of the operating water discharged from the hydraulic pump 12; and a switch valve 51 which supplies the operating water whose pressure is accumulated in the accumulator 30 to the hydraulic cylinder 4 when switched to a second communication position 51c.