Elastic buffer type expansion joint

The utility model discloses an elastic buffer type expansion joint, and relates to the technical field of expansion joints. The shock-absorbing expansion joint comprises a shock-absorbing mechanism and an expansion joint mechanism, the damping mechanism is located on the peripheral side face of the expansion joint mechanism and clamped with the expansion joint mechanism. The damping mechanism is composed of a damping frame and a buffer frame. The buffering frame is located at one end of the damping frame and rotationally matched with the damping frame. According to the expansion joint mechanism, the fixing column is in sliding connection with the fixing hole, the limiting device is arranged on the peripheral side face of the fixing column after installation is completed, the fixing ring is prevented from deviating, and after the clamping hole in the buffer frame and the clamping column are clamped, the clamping hole in the buffer frame and the clamping column are fixed through the nut; the vibration generated