Rail robot chassis capable of running at differential speed

The utility model discloses a track robot chassis capable of differential running, which comprises a driving wheel set and a driven wheel set which are arranged at the top of a bottom plate, the driving wheel set comprises a driving motor and a support frame, a bearing is horizontally arranged in the middle of the bottom of the support frame, step counting components are arranged on two sides of the bottom of the support frame, and the step counting components are arranged on the bottom of the support frame. A driving wheel is arranged at the top of the step counting assembly, a differential mechanism is horizontally arranged in the middle of the interior of the supporting frame, the differential mechanism comprises an outer gear, the driving wheels on the two sides can walk at different speeds through the differential mechanism, and the requirement that the rotating speeds of the driving wheels on the inner side and the rotating speeds of the driving wheels on the outer side are inconsistent when the track r