Patent ID: 9731352
Date: 2017-08-15
CPC Classifications: B23B,B23Q,B60B

Claim:
1. An improved wheel alignment device, comprising a rack, guide pillars, lifting cylinders, a belt pulley I, a lifting plate, guide sleeves, a servo motor, a large piston, a long cylinder rod, a guide rod, a hollow shaft, a bearing pedestal, an upper end cover, a small piston, a short cylinder rod, a flange end cover, an expanding sleeve, an expanding core, a supporting plate, a lower end cover, a belt pulley II and a rotary joint, characterized in that: the two lifting cylinders and the four guide pillars are fixed at the bottom of the rack; the output ends of the lifting cylinders are hinged with the lower part of the lifting plate, the four guide sleeves, the servo motor and the bearing pedestal are all fixed above the lifting plate, and the guide sleeves are matched with the guide pillars, wherein the belt pulley I is fixed at the output end of the servo motor; the large cylinder is formed by the large piston, the long cylinder rod, the guide rod, the hollow shaft, the upper end cover and the lower end cover, the large piston is matched with an inner cavity of the hollow shaft, and the upper end cover is arranged at the upper end of the hollow shaft and matched with the long cylinder rod, wherein the long cylinder rod is fixed at the upper end of the large piston; the lower end cover is fixed at the lower end of the hollow shaft, and the guide rod is fixed between the upper end cover and the lower end cover and matched with the large piston; the small cylinder is formed by the small piston, the short cylinder rod, the flange end cover and the expanding sleeve, the small piston is matched with a hollow part of the top end of the long cylinder rod, and the flange end cover is arranged at the top end of the long cylinder rod and matched with the short cylinder rod, wherein the short cylinder rod is fixed at the upper end of the small piston, and the expanding sleeve is fixed above the flange end cove; the expanding core is fixed at the top end of the short cylinder rod and matched with the expanding sleeve; the supporting plate is fixed at the top end of the bearing pedestal; the hollow shaft is fixed inside the bearing pedestal by a bearing; and both the belt pulley II and the rotary joint are fixed below the lower end cover.