Shock-resistant waterproof worm and gear speed reducer

The invention belongs to the technical field of worm and gear speed reducers, and particularly relates to an impact-resistant waterproof worm and gear speed reducer which is characterized in that the impact-resistant waterproof worm and gear speed reducer comprises a machine base, a box body is arranged on the outer wall of the top of the machine base, and fixing rods are fixedly connected to the outer walls of the tops, located at the two ends of the box body, of the machine base; the outer walls of the tops of the two fixing rods are fixedly connected with the same top end protective cover, and the outer walls of the two sides of the top end protective cover are fixedly connected with shaft plates. In the working process of the matched cleaning assembly and the anti-pollution assembly, a hydraulic cylinder is adjusted to drive bristles on an adjusting plate to brush the outer wall of the box body, the bristles are matched with a water body for heat dissipation, and therefore the cleaning degree of the outer