Title:
DRIVE CONTROL APPARATUS FOR CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2015/108216
Kind Code:
A1
Abstract:
The disclosed invention relates to a drive control apparatus for a construction machine, comprising a work apparatus operating means, a left drive pedal apparatus, a right drive pedal apparatus and a pilot pump for providing a pilot signal pressure for a spool switch to an option pedal apparatus. The drive control apparatus for a construction machine comprises: a pedal control switch; a valve block that has a left drive pedal signal pressure port, a right drive pedal signal pressure port and a forward drive signal pressure port and distributes a pilot signal pressure generated when the pedal apparatuses are operated; and a selection valve that is electrically converted when the pedal control switch is operated and connects the drive pedal signal pressure ports of at least one of the pedal apparatuses to the forward drive signal pressure port, wherein a forward drive spool is controlled using the left drive pedal apparatus and the right drive pedal apparatus.
Inventors:
CHOI HYUN-CHUL (KR)
Application Number:
PCT/KR2014/000515
Publication Date:
July 23, 2015
Filing Date:
January 17, 2014
Export Citation:
Assignee:
VOLVO CONSTR EQUIP AB (SE)
CHOI HYUN-CHUL (KR)
CHOI HYUN-CHUL (KR)
International Classes:
E02F9/20; E02F9/22; F15B11/028; F15B13/02
Foreign References:
| KR20080102660A | 2008-11-26 | |||
| JPH09209414A | 1997-08-12 | |||
| KR20080051212A | 2008-06-11 | |||
| KR20110028769A | 2011-03-22 | |||
| KR20090013590A | 2009-02-05 |
Attorney, Agent or Firm:
YOON, Eui-Seoup (KR)
윤의섭 (KR)
윤의섭 (KR)
Download PDF: