Heavy duty trailing arm suspension system

摘要

The present invention provides a heavy duty suspension system including a frame and a pair of spaced apart trailing arms. The trailing arms have at least a portion with an open bottom and flanges extending away from the opening. The trailing arm preferably has a generally U-shaped cross-section over a substantial portion of its length. An axle has opposing end portions pivotally supported respectively on the trailing arms. A V-rod includes first and second spaced apart ends extending to a common third end with the first and second ends preferably pivotally attached to the frame. The third end is preferably pivotally attached to the axle. The V-rod provides lateral stability and defines a pinion angle with the trailing arms. The trailing arms extend longitudinally from the forward portion to a rearward portion. An anti-roll bar includes opposing end portions and a central portion transverse to and extending between the end portions. The end portions are respectively arranged longitudinally along a portion of the trailing arms and are pivotally secured respectively to the trailing arms.