Positioning device for maintenance and installation of riding wheel of mixing machine

The utility model relates to the technical field of electromechanical equipment maintenance, in particular to a positioning device for maintenance and installation of a riding wheel of a mixing machine, and aims to solve the problem that when the riding wheel of rotary equipment such as the mixing machine is maintained at present, due to lack of an accurate measuring basis or a maintenance and installation tool, the riding wheel is inconvenient to maintain when being disassembled, maintained and reinstalled. The problems that the service life of equipment is shortened and the production efficiency is finally influenced due to rotation displacement of a drum of the mixing machine and non-uniform stress of a riding wheel caused by the fact that the initial position cannot be accurately positioned in the prior art are solved. The device is mainly composed of a supporting rod, an adjusting screw rod, a positioning contact, a fastening screw rod and the like, the positioning contact is rotated to be horizontal wit