Speed reducer based on highway toll collection

The speed reducer comprises a frame, the surface of the frame is sleeved with a rubber sleeve, extending parts are arranged on the left side and the right side of the bottom of the rubber sleeve, the sides, away from the rubber sleeve, of the extending parts extend to the bottom of the frame, and bolts are arranged at the top of the rubber sleeve. The bottom end of the bolt sequentially penetrates through the rubber sleeve and the frame and extends into the frame. The rubber sleeve and the frame are connected through the bolt, the bolt extrudes the connecting plate in the descending process, the connecting plate moves downwards and is inserted into the extending part, the effect that the frame and the rubber sleeve are connected multiple times through a single bolt can be achieved, meanwhile, the rubber sleeve arranged outside can reduce the maintenance cost of the frame, and the service life of the frame is prolonged. The deceleration strip solves the problems that an existing deceleration strip is single in