Title:
HYDRAULIC CIRCUIT AND HYDRAULIC SHOVEL EQUIPPED WITH THE SAME
Document Type and Number:
Japanese Patent JP2012092925
Kind Code:
A
Abstract:
To provide a hydraulic circuit which uses a multiple control valve and is excellent in responsiveness.
In the hydraulic circuit where pressure oil from a variable displacement hydraulic pump is supplied to each hydraulic actuator via two or more directional control valves connected in series, a shut-off valve is provided at the most downstream position of the two or more directional control valves and an accumulator is provided between the directional control valve at the most downstream position and the shut-off valve via a check valve.
Inventors:
YAMADA RYOJI
OHIGATA SHIGERU
OHIGATA SHIGERU
Application Number:
JP2010241901A
Publication Date:
May 17, 2012
Filing Date:
October 28, 2010
Export Citation:
Assignee:
BOSCH REXROTH CORP
International Classes:
F15B11/00; E02F9/22
Attorney, Agent or Firm:
Yoshihiro Shimizu
Shinichi Abe
Yuji Tsujida
Shinichi Abe
Yuji Tsujida