SYSTEM AND METHOD FOR CONTROLLING CONSTRUCTION MACHINE

Title:

SYSTEM AND METHOD FOR CONTROLLING CONSTRUCTION MACHINE

Document Type and Number:

WIPO Patent Application WO/2018/044099

Kind Code:

A1

Abstract:

A system for controlling a construction machine comprises: a hydraulic pump; a first and a second actuator connected to the hydraulic pump through a first and a second parallel line, respectively; a first and a second control valve for controlling operations of the first and the second actuator, respectively, depending on the displacement amount of spools provided therein; a first and a second spool displacement adjusting valve for supplying respective spools of the first and the second control valve with a pilot signal pressure for controlling a displacement amount of the spools depending on an input control signal; and a control unit for outputting the control signal to the first and the second spool displacement adjusting valve in response to a manipulation signal of an operator and performing a control such that, when a manipulation signal for a complex operation of the first and the second actuator is received, the displacement amount of the spool in the second control valve according to a manipulation signal for the second actuator is limited depending on a manipulation signal of the first actuator.

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Inventors:

KIM CHANG-MOOK (KR)
JUNG WOO-YONG (KR)
AHN HYEON-SIK (KR)
KIM KI-YONG (KR)

Application Number:

PCT/KR2017/009555

Publication Date:

March 08, 2018

Filing Date:

August 31, 2017

Export Citation:

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Assignee:

DOOSAN INFRACORE CO LTD (KR)

International Classes:

E02F9/22; E02F9/20; F15B13/02

Foreign References:

JPH0517202U	1993-03-05
JPH1072850A	1998-03-17
KR20150104113A	2015-09-14
KR20130143552A	2013-12-31
KR20140034833A	2014-03-20

Other References: