CONTROL DEVICE FOR CONSTRUCTION MACHINE - CATERPILLAR MITSUBISHI LTD

Title:

CONTROL DEVICE FOR CONSTRUCTION MACHINE

Document Type and Number:

WIPO Patent Application WO/1998/024987

Kind Code:

A1

Abstract:

A control device for a construction machine such as hydraulic excavators, comprising a revolution operating member for operating a revolving part (14) of a construction machine, a fluid pressure pump (2), an accumulator (5) for storing a working fluid from the fluid pressure pump (2), a fluid pressure actuator (7) for drivingly revolving the revolving part (14) of the construction machine using the working fluid from the fluid pressure pump (2) and the accumulator (5), a first control valve (8) installed between the fluid pressure actuator (7) and the fluid pressure pump (2), a second control valve (11) for controlling a state of a fluid flowing into the accumulator (5) from the fluid pressure actuator (7), and control means (9) which includes first valve control means (9a) for controlling the first control valve (8) and second valve control means (9b) for controlling the second control valve (11).

Inventors:

MIKI MASATOSHI (JP)
YOSHINO KAZUNORI (JP)
SAMEJIMA MAKOTO (JP)
AKAKI TOMOHIRO (JP)
MITSUMORI SHIGEYOSHI (JP)

Application Number:

PCT/JP1997/000820

Publication Date:

June 11, 1998

Filing Date:

March 14, 1997

Export Citation:

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Assignee:

CATERPILLAR MITSUBISHI LTD (JP)
MIKI MASATOSHI (JP)
YOSHINO KAZUNORI (JP)
SAMEJIMA MAKOTO (JP)
AKAKI TOMOHIRO (JP)
MITSUMORI SHIGEYOSHI (JP)

International Classes:

E02F9/12; E02F9/20; E02F9/22; F16H61/40; F16H61/4096; F16H61/4148; F16H61/4157; B60K6/12; (IPC1-7): E02F9/22

Foreign References:

JPH0742385U	1995-08-04
JPH06280287A	1994-10-04
JPH0564253U	1993-08-27
JPH03244720A	1991-10-31

Other References: