Boring mill electric main shaft universal rotation loading reliability test device

The utility model belongs to the technical field of mechanical test equipment, and discloses a universal rotary loading reliability test device for an electric spindle of a boring mill. The device comprises a main shaft mounting and fixing module, a lateral torque loading module, a universal rotary loading module and a detection module, the main shaft mounting and fixing module comprises an electric main shaft and a force bearing shaft; the force bearing shaft and the electric main shaft are fixedly connected with the broach mechanism through a universal matching conical surface; the lateral torque loading module comprises a torque applying part and a radial force compensation part; the torque applying part comprises a dynamometer; the radial force compensation part comprises a radial force compensation device; a rotary supporting body in the universal rotary loading module and the force bearing shaft are coaxially arranged in space; the detection module comprises a radial run-out detection device and an axia