Hydraulic steering device for agricultural work vehicle
AssigneeLs Mtron Ltd.
InventorSang Heon Lee
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a hydraulic steering device for an agricultural work vehicle comprising a steering pump for supplying working fluid; an automatic steering unit which is connected to the steering pump, and which changes, according to automatic steering performed by a control part, the traveling direction of the agricultural work vehicle by using the working fluid supplied from the steering pump; a manual steering unit which is connected to each of the steering pump and the automatic steering unit, and which changes, according to manual steering performed by the operation of a steering wheel, the traveling direction of the agricultural work vehicle, and a manual switching unit connected to each of the steering pump and the manual steering unit.
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;
- an automatic blocking unit connected to the automatic steering unit and configured to, according to whether the manual steering is performed, selectively block the working fluid for the automatic steering from being supplied to a steering cylinder of the agricultural vehicle;
- and
- an automatic maintaining unit configured to control the automatic blocking unit to cause the working fluid for the automatic steering to pass regardless of whether the manual steering is performed.
A hydraulic steering device for an agricultural vehicle, the hydraulic steering device comprising:
- a steering pump configured to supply a working fluid;
- a steering cylinder configured to change a traveling direction of the agricultural vehicle using the working fluid;
- an automatic steering unit connected to the steering pump and configured to, as automatic steering is performed by a controller, perform supplying the working fluid to the steering cylinder and discharging the working fluid from the steering cylinder;
- a manual steering unit connected to the steering pump and configured to, as manual steering is performed by manipulation of a steering wheel, perform supplying the working fluid to the steering cylinder and discharging the working fluid from the steering cylinder;
- an automatic maintaining unit configured to cause both the automatic steering unit and the manual steering unit to supply the working fluid to the steering cylinder in a state in which the manual steering is performed, according to control of the controller.
Dependencies are inferred from the claim text.