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Title:
CONTROL SYSTEM OF CONSTRUCTION EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2017/061647
Kind Code:
A1
Abstract:
The present invention relates to a control system of construction equipment and, more specifically, to a control system of construction equipment in which an electronic HRV controlled by an ECU is connected to a hydraulic circuit for operating a cylinder, thereby exhibiting more excellent efficiency than when a hydraulic HRV is applied. To this end, the present invention provides a control system of construction equipment, the system comprising: a spool switched by a pilot signal pressure applied by operating a joystick to enable a hydraulic oil to move from a hydraulic pump to a cylinder and from the cylinder to a hydraulic tank; an HRV installed on a travel path of the hydraulic oil moving between the spool and the cylinder, the HRV being opened/closed to control the movement of the hydraulic oil; and an ECU electrically connected with the HRV to control the opening/closing of the HRV.

Inventors:
GWON SANG MIN (KR)
JUNG TAE RANG (KR)
Application Number:
PCT/KR2015/010614
Publication Date:
April 13, 2017
Filing Date:
October 07, 2015
Export Citation:
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Assignee:
VOLVO CONSTR EQUIP AB (SE)
GWON SANG MIN (KR)
JUNG TAE RANG (KR)
International Classes:
E02F9/20; E02F9/16; E02F9/22; F15B13/02
Foreign References:
JP2014029180A2014-02-13
KR200180964Y12000-05-15
KR20140076982A2014-06-23
KR20150044759A2015-04-27
US7506505B22009-03-24
Attorney, Agent or Firm:
KIM, Seon-Min (KR)
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