Bridge girder and bridge pier anticollision device

The utility model discloses a bridge girder and bridge pier anticollision device which comprises an inner crash pad, a rotation assembly and an outer anticollision assembly which are concentrically arranged from inside to outside, wherein the inner crash pad tightly wraps a bridge pier; the outer anticollision assembly can rotate around an axial central line by the rotation assembly; the rotation assembly comprises an inner ring, an outer ring and spherical rolling bodies which are uniformly distributed between the inner ring and the outer ring; the outer ring can rotate relative to the inner ring; relative rotation fit is realized between the inner ring and the inner crash pad. The aims of prolonging the stress time and reducing the impact force borne by the bridge pier are realized by the outer anticollision assembly, the outer anticollision assembly can rotate around the axial central line by the rotation assembly when the bridge pier is collided, the impact force brought by ships and other objects can shi