Road and bridge noise reduction telescopic device

The utility model belongs to the technical field of roads and bridges, and particularly relates to a road and bridge noise reduction telescopic device which comprises a whole telescopic device body, a cover plate, a supporting plate and sound absorption rubber, the middle of the whole telescopic device body is fixedly connected with the supporting plate, the two sides of the supporting plate are fixedly connected with the sound absorption rubber, and the top end of the supporting plate is fixedly connected with the cover plate. An insertion column is fixedly connected to the bottom end of the supporting plate, a large spring is fixedly connected to the middle of the interior of the cover plate, the large spring can rebound the extrusion force of the vehicle when the cover plate is subjected to the extrusion force, the vibration reduction effect is achieved, and when the vibration force generated when the vehicle passes through the cover plate is reduced, noise generated by the vibration force can be greatly r