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Title:
HYDRAULIC STEERING DEVICE OF AGRICULTURAL WORK VEHICLE
Document Type and Number:
WIPO Patent Application WO/2021/015529
Kind Code:
A1
Abstract:
The present invention relates to a hydraulic steering device of an agricultural work vehicle, the hydraulic steering device comprising: a steering pump for supplying a working fluid; an automatic steering unit which is connected to the steering pump and uses the working fluid supplied from the steering pump to change the traveling direction of the agricultural work vehicle when automatic steering is performed by a control unit; a manual steering unit which is connected to the steering pump and uses the working fluid supplied from the steering pump to change the traveling direction of the agricultural work vehicle when manual steering is performed by operating a steering handle; and an automatic cut-off unit which is connected to the automatic steering unit and is for selectively cutting off the supply of the working fluid for the automatic steering to a steering cylinder of the agricultural work vehicle according to whether the manual steering is being performed, wherein the automatic cut-off unit allows the working fluid for the automatic steering to be supplied to the steering cylinder, but uses a portion of the working fluid supplied from the steering pump to the manual steering unit to cut off the supply of the working fluid for the automatic steering to the steering cylinder when the manual steering is being performed.

More Like This:
WO/2020/102763INTEGRATED PLATFORM AND COMMON SOFTWARE STRUCTURAL ARCHITECTURE FOR AUTONOMOUS AGRICULTURAL VEHICLE AND MACHINERY OPERATION.
WO/2019/081205METHOD AND CONTROL DEVICE FOR OPERATING AN AGRICULTURAL MACHINE
Inventors:
LEE SANG HEON (KR)
CHOI JONG MIN (KR)
Application Number:
PCT/KR2020/009579
Publication Date:
January 28, 2021
Filing Date:
July 21, 2020
Export Citation:
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Assignee:
LS MTRON LTD (KR)
International Classes:
A01B69/04; B62D5/06; B62D5/065
Foreign References:
JP2003118615A2003-04-23
JP2006131110A2006-05-25
KR19980060566A1998-10-07
US6067782A2000-05-30
JP2000300010A2000-10-31
Other References:
See also references of EP 4005360A4
Attorney, Agent or Firm:
ASTRAN INT'L IP GROUP (KR)
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