Title:
FLUID PRESSURE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/043196
Kind Code:
A1
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.
Inventors:
SHIMADA YOSHIYUKI (JP)
Application Number:
PCT/JP2017/029875
Publication Date:
March 08, 2018
Filing Date:
August 22, 2017
Export Citation:
Assignee:
EAGLE IND CO LTD (JP)
International Classes:
F16H61/4096; F15B1/033
Foreign References:
| JP2010537130A | 2010-12-02 | |||
| DE102005060994A1 | 2007-06-21 | |||
| US20090165451A1 | 2009-07-02 | |||
| DE102010006464A1 | 2011-08-04 | |||
| US20130133318A1 | 2013-05-30 | |||
| US20130125536A1 | 2013-05-23 | |||
| JP2014181804A | 2014-09-29 | |||
| JPH116557A | 1999-01-12 |
Other References:
See also references of EP 3505796A4
Attorney, Agent or Firm:
SHIGENOBU Kazuo et al. (JP)
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