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1. (WO2018043196) FLUID PRESSURE CIRCUIT

Pub. No.:    WO/2018/043196    International Application No.:    PCT/JP2017/029875
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Wed Aug 23 01:59:59 CEST 2017
IPC: F16H 61/4096
F15B 1/033
Applicants: EAGLE INDUSTRY CO., LTD.
イーグル工業株式会社
Inventors: SHIMADA Yoshiyuki
嶋田 佳幸
Title: FLUID PRESSURE CIRCUIT
Abstract:
Provided is a fluid pressure circuit configured so that a load on a fluid pressure pump can be reduced. This fluid pressure circuit 120 comprises: an HST circuit 121 having a variable displacement fluid pressure pump 1 which is driven by an engine 100 and which can rotate in normal and reverse directions, the HST circuit 121 also having a fluid pressure motor 4 which is driven by fluid discharged from the fluid pressure pump 1 and which can rotate in normal and reverse directions, the HST circuit 121 further having a first conduit 3 for connecting one end of the fluid pressure pump 1 and one end of the fluid pressure motor 4, the HST circuit 121 further having a second conduit 5 for connecting the other end of the fluid pressure pump 1 and the other end of the fluid pressure motor 4; an accumulator 10 parallelly connected to the fluid pressure pump 1; a pressure accumulation pump 11 for accumulating pressurized fluid in the accumulator 10; and an accumulator switching valve 14, 20, 25 for switching the connection between the fluid pressure motor 1 and the accumulator 10.