Steering system for an articulated machine

Motor vehicles – Steering gear – With fluid power assist

Patent

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Details

180420, 180441, B62D 1300

Patent

active

061585440

ABSTRACT:
In articulated machines it has long been a desire to provide a steering system that will permit the incorporation of machine controls into a steering wheel assembly and yet provide the operator with mechanical feedback through the steering wheel. The present invention accomplishes this goal by providing a steering wheel assembly on a first frame of the machine and a control valve on the second frame that articulates with respect to the first. The steering wheel assembly and control valve are connected by a shaft assembly that includes a pair of constant velocity U-joints interposed along the length thereof. The shaft assembly translates substantially equal amounts of rotation between the steering wheel assembly and the control valve. The control valve is operable in a first and second condition, depending upon the amount of rotation of the steering wheel assembly, to provide different modes of steering that compliment the operation of the machine.

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