WORK MACHINE DRIVE CONTROL DEVICE - KAWASAKI HEAVY IND LTD

Title:

WORK MACHINE DRIVE CONTROL DEVICE

Document Type and Number:

WIPO Patent Application WO/2011/086888

Kind Code:

A1

Abstract:

A work machine drive control device drives a structural body by means of a hydraulic motor (2) and an electric motor (3), and is provided with: a remote control valve (5) which determines the operation amount of the structural body; an electric motor torque calculation unit which calculates the torque of the electric motor (3); a hydraulic motor torque calculation unit which calculates the torque of the hydraulic motor (2); a control device (7) which, on the basis of the operation amount of the structural body determined in the aforementioned remote control valve (5), transmits an opening degree control signal to a control valve (14) such that the torque necessary to drive the structural body is obtained from the torque of the aforementioned electric motor (3) and the torque of the aforementioned hydraulic motor (2); and solenoid pressure reduction valves (19, 20) which reduce the pilot pressure acting on the aforementioned control valve (14) on the basis of the opening degree control signal from the control device (7).

Inventors:

YAMAMOTO RYO
YAMADA MASAHIRO
YUDATE YOJI

Application Number:

PCT/JP2011/000072

Publication Date:

July 21, 2011

Filing Date:

January 11, 2011

Export Citation:

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Assignee:

KAWASAKI HEAVY IND LTD (JP)
YAMAMOTO RYO
YAMADA MASAHIRO
YUDATE YOJI

International Classes:

E02F9/20; E02F9/22; F15B21/14

Foreign References:

JP2007056998A	2007-03-08
JP2005290882A	2005-10-20
JP2008291522A	2008-12-04
JP2008063888A	2008-03-21
JP2005290882A	2005-10-20
JP2008291522A	2008-12-04
JP2008063888A	2008-03-21

Other References: