The invention discloses a commercial vehicle with a four-wheel steering function. The commercial vehicle comprises a rear steering axle and a rear wheel steering controller, wherein the rear steering axle comprises a rear wheel steering driving axle and a rear wheel steering returning mechanism; the rear wheel steering driving axle comprises an axle body, a left steering knuckle and a right steering knuckle, two steering knuckle arms, two tie rod arms as well as a rear steering tie rod, wherein the left steering knuckle and the right steering knuckle are positioned at the two ends of the axle body, respectively; the two tie rod arms are fixed on the left steering knuckle and the right steering knuckle, respectively; the rear steering tie rod is used for connecting the two tie rod arms; the rear wheel steering returning mechanism comprises a hydraulic returning cylinder as well as a motor, a rear wheel steering gear, a steering pitman arm and a rear wheel steering track rod, wherein the motor, the rear wheel steering gear, the steering pitman arm and the rear wheel steering track rod are connected with each other in sequence; one steering knuckle arm is connected with the rear wheel steering track rod to drive the rear wheel to steer; the other steering knuckle arm is connected with a piston rod of the hydraulic returnable cylinder; and the rear wheel steering controller is electrically connected with the motor and also electrically connected with a hydraulic electromagnetic valve of a hydraulic source of the rear wheel steering gear. According to the commercial vehicle with the four-wheel steering function, disclosed by the invention, four-wheel steering is realized and the maneuvering ability and handling stability are also improved.
Commercial vehicle with four-wheel steering function
07.10.2015
Patent
Elektronische Ressource
Englisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |