B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
142/28
B62D 5/06 (2006.01) B62D 1/20 (2006.01)
Patent
CA 1041875
A DEVICE FOR SHIFTING BETWEEN FINE AND COARSE STEERING OF VEHICLES COMPRISING A FRONT AND A REAR VEHICLE PART Abstract of the Disclosure A device for shifting between fine and coarse steering of vehicles having a front and a rear vehicle part, which parts are articulately joined with each other, and hydraulic steering cylinders, which are disposed between the two vehicle parts for angular displacement of the vehicle parts relative each other for the steering of the vehicle, a first valve being adapted to control the fluid flow to the steering cylinders in order to provide for the fine steering of the vehicle and a second valve, being adapted to control the fluid flow to the steering cylinders to provide for the coarse steering. A shifting means is provided and is shiftable between two positions, and is adapted in a first position to connect an actuator, provided for the steering of the vehicle, to the first valve and in a second position to connect the actuator to the second valve, said shifting means and said valves being arranged so that with the shifting means in the first position, a mutual angular displacement of the vehicle parts is obtained proportional to the movement of the actuator and with the shifting means in the second position, a continuous angular displacement of the vehicle parts is obtained, all the time the actuator is moved from a certain initial position.
251859
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