Patent ID: 6116645
Filing Date: 2000-09-12
Classification: B60G,B62D

Abstract:
In a steering assembly for a work vehicle having a supporting frame; said assembly including a front axle rotating with respect to said name, and being defined longitudinally by end portions rocking about respective substantially vertical axes, each said end portion being supported for rotation a wheel; said front axle also including a box body connected in a freely rotating manner to said fame by a first spherical joint; and connecting means provided to connect said front axle stably to said frame and to enable the loads on said wheels to be transmitted to the frame, the improvement comprising:said connecting means including a shock-absorbing means for elastically disconnecting said front axle from said frame, a first lever connected to said front axle close to said first spherical joint and a second lever connected to said first lever by a second spherical joint; andcontrol means for rotating said end portions with respect to said box body, said connecting means being a pair of rods, each of which is located between a corresponding said end portion and said frame to cause said front axle to rotate with respect to said first spherical joint while said end portions rotate with respect to said box body, wherein said second lever is connected to said frame on the opposite side of said first spherical joint to said direction wheels by means of a first hinge, said box body and said first and second levers together defining an articulated quadrilateral connected to said frame by said first spherical joint and said first hinge.