Hydraulic steering device of agricultural work vehicle
AssigneeLs Mtron Ltd.
InventorsSang Heon Lee, Jong Min Choi
Life of this patent
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Abstract
The present disclosure relates to a hydraulic steering device of an agricultural work vehicle comprising a steering pump for supplying a working fluid; an automatic steering unit which uses the working fluid to change the traveling direction of the agricultural work vehicle when automatic steering is performed by a control unit; a manual steering unit which uses the working fluid 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 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 performed.
Claims17
A hydraulic steering device for an agricultural vehicle, the hydraulic steering device comprising:
- a steering pump configured to supply a working fluid;
- an automatic steering unit connected to the steering pump and configured to, as automatic steering is performed by a controller, use the working fluid supplied from the steering pump to change a traveling direction of the agricultural vehicle;
- a manual steering unit connected to the steering pump and configured to, as manual steering is performed by manipulation of a steering wheel, use the working fluid supplied from the steering pump to change the traveling direction of the agricultural vehicle;
- and
- an automatic blocking unit connected to the automatic steering unit and configured to, according to whether the manual steering is performed, selectively block a working fluid for the automatic steering from being supplied to a steering cylinder of the agricultural vehicle,
- wherein the automatic blocking unit allows the working fluid for the automatic steering to be supplied to the steering cylinder but, when the manual steering is performed, uses a portion of the working fluid supplied from the steering pump to the manual steering unit to block the working fluid for the automatic steering from being supplied to the steering cylinder.
Dependencies are inferred from the claim text.