Lifting mechanism of belt cleaning device

The utility model relates to the technical field of belt cleaning equipment, and discloses a belt cleaning device lifting mechanism which comprises a rotating base, a main supporting beam assembly, a cantilever assembly, a cantilever beam and a plurality of belt cleaning brushes, the main supporting beam assembly is rotationally installed at the top end of the rotating base, a lifting adjusting assembly is arranged on the main supporting beam assembly, and the cantilever beam assembly is installed on the rotating base. A lifting block is installed on the main supporting beam assembly in a sliding mode, the lifting adjusting assembly is connected with the lifting block, a sliding rail is fixedly installed on one side of the main supporting beam assembly, a sliding block is fixedly installed on the cantilever assembly, the sliding block is installed on the sliding rail in a sliding mode, and the sliding block is fixedly connected with the lifting block. The cantilever assembly is fixedly installed on the slidin