PARALLEL LINKAGE-TYPE WORKING APPARATUS FOR CONSTRUCTION EQUIPMENT

Title:

PARALLEL LINKAGE-TYPE WORKING APPARATUS FOR CONSTRUCTION EQUIPMENT

Document Type and Number:

WIPO Patent Application WO/2013/100521

Kind Code:

A1

Abstract:

The present invention relates to a parallel linkage-type working apparatus for construction equipment which applies a parallel lever and a parallel link to prevent a working tool from bending inward so that, even if the working tool is elevated, tilting of the working tool inward can be prevented, and the amount of change in the orientation of the working tool at each height can be reduced. Also, the present invention relates to a parallel linkage-type working apparatus for construction equipment which is capable of increasing excavation ability or power from the ground position by supplying more hydraulic fluid at a time when working hydraulic pressure is supplied to each cylinder head, as compared to when working hydraulic pressure is supplied to a cylinder rod. In addition, the present invention relates to a parallel linkage type-working apparatus for construction equipment which, like the previous case, has two cylinders for operating a parallel linkage and also has a similar operating relationship therebetween, and has main angle specifications for operating the linkage which are similar to a typical work environment, so as to enable even a first-time user to quickly become accustomed to using the apparatus without any separate training or perceiving a sense of difference.

Inventors:

KIM HYUK JOONG (KR)
YOO YOUNG SUN (KR)
HWANG KYUNG HO (KR)
KIM JONG WON (KR)
HAN YONG HEE (KR)
KIM SUN HO (KR)
PARK HEUNG KEUN (KR)

Application Number:

PCT/KR2012/011385

Publication Date:

July 04, 2013

Filing Date:

December 24, 2012

Export Citation:

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Assignee:

DOOSAN INFRACORE CO LTD (KR)
SNU R&DB FOUNDATION (KR)

International Classes:

E02F3/42; E02F3/40

Foreign References:

JP2001020310A	2001-01-23
JP2002004321A	2002-01-09
KR20100057257A	2010-05-31
US4798512A	1989-01-17
JP2004036153A	2004-02-05
KR100998097B1	2010-12-02
KR20100057257A	2010-05-31

Other References: