Mobile robot chassis and mobile robot

The utility model relates to the related technical field of robots, in particular to a mobile robot chassis and a mobile robot. The mobile robot chassis comprises a chassis body. The bearing assembly is arranged at the upper end of the chassis body and comprises a middle layer plate and a plurality of bearing units, and the bearing units are arranged on the middle layer plate at intervals in the circumferential direction of the middle layer plate; wherein each bearing unit is provided with a first end and a second end in the direction perpendicular to the chassis body, the first end is located on the side, facing the chassis body, of the middle layer plate, and the second end is located on the other side, back to the chassis body, of the middle layer plate. The bearing units are arranged for bearing, the middle layer plate is only used as a transition metal plate, a thin metal plate can be adopted, it is guaranteed that the strength of the bearing structure is enough, meanwhile, the dead weight of the bearing