Efficient damping tamping device for municipal water supply and drainage pipeline

The utility model discloses an efficient damping tamping device for municipal water supply and drainage pipelines, and relates to the technical field of municipal engineering. The damping device comprises a hollow shell, and the lower surface of a damping spring connected with the periphery of a damper in a sleeved mode and connected with the interior of a rectangular containing groove formed in the lower portion of the inner side wall of the hollow shell in an annular array mode is connected with the lower side in the rectangular containing groove. The upper surface of the damping spring is connected with the lower surface of a first cross rod which is connected with the periphery of a hydraulic rod connected with the lower surface of a hydraulic cylinder connected in the hollow shell in an annular array manner; and a concentric-square-shaped slot formed in the lower surface of the hollow shell is inserted into a concentric-square-shaped socket fixedly connected with the upper surface of the concentric-squar