Shock-absorbing bushing structure of rotor spinning machine

The utility model relates to a shock-absorbing bushing structure of a rotor spinning machine. The outer surface shape of a shock-absorbing bushing is alternatively concave and convex. Preferably, a plurality of grooves along the circumferential direction can be formed in the outer surface of the shock-absorbing bushing and are annular grooves which are mutually parallel. The sections of the annular grooves are V-shaped, U-shaped or rectangular. In addition, preferably, external threads are formed on the outer surface of the shock-absorbing bushing; and thread shapes of the external threads are rectangular, V-shaped or trapezoidal. According to the shock-absorbing bushing structure disclosed by the utility model, the outer surface of the shock-absorbing bushing is designed into a groove or external thread form; in a work state that a rotor operates, rubber on a contact surface of a pressing block is pressed to deform and is embedded into the grooves or external threads in the surface of the shock-absorbing bushing; and the axial displacement of the shock-absorbing bushing is effectively prevented by using a shearing force between the pressing block and the surface of the shock-absorbing bushing, and thus the fixing effect of a pressing device on the shock-absorbing bushing is greatly improved and the axial float between the shock-absorbing bushing and the rotor is avoided.