Folding lift arm assembly for skid steer loader

摘要

A lift arm assembly for a skid steer loader comprises a pair of lift arm links that are pivotally mounted together at first ends of the links. A first lift arm link is of substantial length and is pivotally mounted to the frame of the skid steer loader adjacent the rear lower portion of the frame and extends upwardly. A second lift arm link extends forwardly from the first lift arm link pivot to a position ahead of the skid steer loader frame. A control link is provided that has one end pivotally mounted to the loader frame adjacent a forward end of the loader frame, and a second end pivotally mounted to the second lift arm link to guide the second lift arm link as it is raised. An extendable and retractable actuator is pivotally mounted at a first end to the first lift arm link adjacent to the pivot of the first lift arm link to the frame. A second end of the actuator is pivotally mounted to the second lift arm link forwardly of the first lift arm length link. The control link is of length, and its pivots are located such that the outer end of the first lift arm link moves in a substantially vertical path as the actuator is extended and retracted.