Hitch assembly with sway block support

A hitch assembly is mounted on a frame of an agricultural tractor. The hitch assembly includes a pair of draft links pivotally mounted on the frame, a drawbar support fixed to the frame between the draft links, and a pair of sway blocks fixed to opposite sides of the frame. Each sway block has an upper end fixed to a side of the frame and extends generally downwardly to a lower free end. The lower free end of each sway block is positioned below a plane defined by a bottom surface of the drawbar support. Each sway block is preferably tapered from a wider front side to a narrower rear side to form an inner surface which faces inwardly and rearwardly. A wedge plate is mounted beneath the drawbar support. The plate extends generally laterally from a left end surface to a right end surface, and each end surface is slanted in order to matingly engage the inner surface of a corresponding one of the sway blocks. The wedge plate is longer than the drawbar support, and projects laterally out from the left and right ends of the drawbar support. As a result, the wedge plate end surfaces engage the inner surfaces of the corresponding inner sway blocks and supports them against side forces applied by the draft links.