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Patent Searching and Data


Title:
TRAVEL CONTROL SYSTEM FOR CONSTRUCTION MACHINERY
Document Type and Number:
WIPO Patent Application WO/2013/089295
Kind Code:
A1
Abstract:
A travel control system is disclosed for preventing off-course travel of equipment due to the overloading of a working piece such as a boom during a complex operation involving vehicle travel and simultaneous driving of the working piece. The travel control system according to the present invention comprises: a left-side travel motor and first working piece coupled to a first hydraulic pump; a plurality of change-over valves for respectively controlling operating fluid supplied from the first hydraulic pump to the left-side travel motor and first working piece; a right-side travel motor and second working piece coupled to a second hydraulic pump; a plurality of change-over valves for controlling operating fluid supplied from the second hydraulic pump to the right-side travel motor and second working piece; a straight-ahead travel valve for supplying the operating fluid of the first hydraulic pump to the left-side and right-side travel motors and supplying the operating fluid of the second hydraulic pump to the first and second working pieces; and a control valve for blocking the supply of operating fluid from the second hydraulic pump, via the straight-ahead travel valve, to the left-side travel motor and right-side travel motor during complex operation involving travel and the working piece.

Inventors:
JEON MAN-SEUK (KR)
Application Number:
KR2011/009667
Publication Date:
June 20, 2013
Filing Date:
December 15, 2011
Export Citation:
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Assignee:
VOLVO CONSTR EQUIP AB (S-631 85, SE)
JEON MAN-SEUK (KR)
International Classes:
F15B13/043; E02F9/22; F15B13/02
Foreign References:
KR100255013B12000-05-01
JP2001261296A2001-09-26
JPH0893000A1996-04-09
KR20100044941A2010-05-03
Attorney, Agent or Firm:
YOON, Eui-Seoup (135-080, KR)
윤의섭 (135-080, KR)
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Claims: