CONTROL DEVICE FOR HYDRAULIC CONSTRUCTION MACHINERY

Title:

CONTROL DEVICE FOR HYDRAULIC CONSTRUCTION MACHINERY

Document Type and Number:

WIPO Patent Application WO/2017/094822

Kind Code:

A1

Abstract:

The purpose of the invention is to provide a control device for hydraulic construction machinery with which a prescribed finishing accuracy can be obtained even when excavation loads are increased for horizontal leveling work and slope formation work. Provided is a control device for hydraulic construction machinery comprising a hydraulic actuator, a working machine that is driven by the hydraulic actuator, a hydraulic pump, a pump flow rate control unit that controls the discharge flow rate of the hydraulic pump, a pump horsepower control unit that controls the horsepower of the hydraulic pump, and a target face distance acquisition unit that measures or calculates target face distance that is the distance from the working machine to the construction target face on which the working machine is to work, wherein as the target face distance becomes smaller, the pump flow rate control unit controls so that the discharge flow rate is reduced and the pump horsepower control unit controls so that the hydraulic pump horsepower is increased.

Inventors:

MORIKI HIDEKAZU (JP)
NARIKAWA RYU (JP)
TANAKA HIROAKI (JP)
SAKAMOTO HIROSHI (JP)
TSURUGA YASUTAKA (JP)

Application Number:

PCT/JP2016/085685

Publication Date:

June 08, 2017

Filing Date:

December 01, 2016

Export Citation:

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Assignee:

HITACHI CONSTRUCTION MACH CO (JP)

International Classes:

E02F9/20

Foreign References:

JP5791827B2	2015-10-07
JP2010203109A	2010-09-16
JP2001248186A	2001-09-14
JP2014012515A	2014-01-23
JPH09291560A	1997-11-11
JPH09228426A	1997-09-02

Other References: