HYDRAULIC CIRCUIT FOR WORKING MACHINE, COMPRISING ACCUMULATOR

摘要

The present invention relates to a hydraulic circuit for a working machine including: a hydraulic actuator; and an accumulator for accumulating hydraulic energy which is discharged from the hydraulic actuator, and addresses the problem of configuring the hydraulic circuit so that high-temperature hydraulic oil does not flow into the accumulator. Means for solving the problem is to configure the hydraulic circuit in such a manner that piping for cooling having a volume equivalent to the accumulation volume of the accumulator is provided in an accumulator inflow/outflow oil passage serving as the inflow oil passage of hydraulic oil to the accumulator and the hydraulic oil cooled in the piping for cooling is accumulated in the accumulator.

主权项

1. A hydraulic circuit for a working machine provided with an accumulator, comprising:
a hydraulic actuator; and the accumulator which accumulates hydraulic energy which is discharged from the hydraulic actuator, and on the other hand, supplies the accumulated hydraulic energy to the hydraulic actuator, wherein piping for cooling having a volume equivalent to accumulation volume of the accumulator is disposed in an inflow oil passage of hydraulic oil to the accumulator, and the hydraulic oil cooled in the piping for cooling is accumulated in the accumulator.