Hub and wheel rim reduction gear assembly

The invention provides a hub and wheel rim reduction gear assembly. The hub and wheel rim reduction gear assembly comprises an inner hub bearing, a hub, an outer hub bearing, a reduction gear shell assembly, a crossed shaft, a half shaft, an outer bevel gear wheel, a conical planet wheel and an inner bevel gear wheel. By the adoption of a planet bevel gear wheel type reduction gear, compared with the prior art, the hub and wheel rim reduction gear assembly can achieve the wheel rim speed rate ranging from 2 to 2.7, so that the speed ratio range of a wheel rim reduction gear is enlarged, the structure is simplified, and the weight is low; and when the reduction gear is maintained, a brake drum and other parts do not need to be detached, and maintaining is facilitated.