Hydraulic Pressure Circuit and Working Machine

摘要

The hydraulic circuit has: main pumps driven by an engine; a boom cylinder including a piston operating by hydraulic oil supplied from the main pumps, one chamber and the other chamber respectively partitioned and formed by the piston; an accumulator accumulating pressure of the hydraulic oil extruded from one chamber of the boom cylinder; and an assist pump motor suctioning the hydraulic oil from the accumulator when pressure continues to be accumulated in the accumulator and the accumulator pressure rises.

主权项

1. A hydraulic pressure circuit comprising:
a main pump driven by an engine; a hydraulic pressure cylinder including a piston operated with an operating fluid supplied from the main pump and one chamber and another chamber partitioned by the piston; an accumulator that accumulates the operating fluid pushed from the one chamber of the hydraulic pressure cylinder; and an assist pump that sucks in the operating fluid from the accumulator when pressure accumulation in the accumulator progresses such that an accumulator pressure increases.