Title:
OIL PRESSURE SYSTEM FOR WHEEL LOADER
Document Type and Number:
WIPO Patent Application WO/2012/087081
Kind Code:
A2
Abstract:
The present invention relates to an oil pressure system for a wheel loader, and more particularly to a wheel loader which includes an oil pressure system having a confluent circuit and reduces the occurrence of impact during a loading work. To this end, the present invention provides the wheel loader which is composed of an oil pressure circuit characterized by setting different cutoff pressure values with respect to a pair of left and right oil pressure pumps connected through the confluent circuit. Accordingly, the present invention can prevent loss of products loaded in a bucket due to an abrupt halt of a boom during the loading work and can remarkably reduce the impulse of the wheel loader by operating the boom at a remarkably low speed in comparison with the maximum speed when the boom approaches the maximum height in a rising process thereof during the loading work of the wheel loader.
Inventors:
PARK MOO YOUNG (KR)
Application Number:
PCT/KR2011/010095
Publication Date:
June 28, 2012
Filing Date:
December 26, 2011
Export Citation:
Assignee:
DOOSAN INFRACORE CO LTD (KR)
PARK MOO YOUNG (KR)
PARK MOO YOUNG (KR)
International Classes:
F15B13/042; E02F9/22
Foreign References:
| JPH09217384A | 1997-08-19 | |||
| JPH11181842A | 1999-07-06 | |||
| JP2001248187A | 2001-09-14 | |||
| KR20090053523A | 2009-05-27 |
Other References:
None
See also references of EP 2657538A4
See also references of EP 2657538A4
Attorney, Agent or Firm:
KIM, Kee-Hyo (KR)
김기효 (KR)
김기효 (KR)
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Claims: