FLUID PRESSURE CONTROL CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a fluid pressure control circuit which facilitates the accumulation of a working fluid into an accumulator, and provides a high pressure when the fluid is reused.

SOLUTION: The head side of a potential energy recovery cylinder Cy1 is communicated with the accumulator Acc through one recovery control valve 1. The suction port of a dedicated pump Pp2 driven together with a main pump Pp1 by an engine E is connected to the accumulator Acc. The discharge port of the dedicated pump Pp2 is communicated with a recovery passage between the head and the rod of the potential energy recovery cylinder Cy1 through the one reuse control valve 3.

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