Title:
OPERATION MACHINE
Document Type and Number:
WIPO Patent Application WO/2015/190135
Kind Code:
A1
Abstract:
Provided is an operation machine with which it is possible to regenerate and use surplus energy. The operation machine according to the present invention has a branching flow channel (150) through which working oil flows between a hydraulic actuator (24) and a hydraulic pump・motor (14), an accumulator (30) provided to the branching flow channel, a first opening/closing valve (31) provided between the accumulator and the hydraulic pump・motor, and a second opening/closing valve (32) provided between the accumulator and the hydraulic actuator. A control device (41) selectively guides working oil from the hydraulic actuator and working oil from the hydraulic pump・motor to accumulate pressure by controlling the opening and closing of the first opening/closing valve and the second opening/closing valve.
Inventors:
TSUKADA YOKO (JP)
ITOU NORITAKA (JP)
IKIMI TAKASHI (JP)
KANEKO SATORU (JP)
FUJIMOTO TAKASHI (JP)
ITOU NORITAKA (JP)
IKIMI TAKASHI (JP)
KANEKO SATORU (JP)
FUJIMOTO TAKASHI (JP)
Application Number:
PCT/JP2015/055640
Publication Date:
December 17, 2015
Filing Date:
February 26, 2015
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY (JP)
International Classes:
F15B21/14; E02F9/22; F15B11/02
Foreign References:
| JP2009275772A | 2009-11-26 | |||
| JP2013133216A | 2013-07-08 | |||
| JP2005096759A | 2005-04-14 |
Other References:
See also references of EP 3153713A4
Attorney, Agent or Firm:
The Patent Body Corporate TAKEWA INTERNATIONAL PATENT OFFICE (JP)
Patent business corporation Takekazu international patent firm (JP)
Patent business corporation Takekazu international patent firm (JP)
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