| 摘要 |
PROBLEM TO BE SOLVED: To increase workload of a hydraulic accumulator to the outside, without increasing the size of the hydraulic accumulator.SOLUTION: A hydraulic accumulator 50 includes a partition member 54 provided in a slidable manner in a housing 51. The partition member 54 separates an oil accumulation chamber 52 accumulating working fluid supplied from a hydraulic pump motor from a gas chamber 53 in which gas is encapsulated. Electric partition member biasing means 55, 57 perform at least one of operation for biasing the partition member 54 onto the side of the oil accumulation chamber 52 in discharging working fluid, and operation for biasing the partition member 54 onto the side of the gas chamber 53 in supplying working fluid. |
