Precision testing equipment for single-shaft rotating mechanism

The utility model relates to the field of single-shaft rotating mechanism testing, in particular to precision testing equipment for a single-shaft rotating mechanism. Comprising an adapter frame and a fixing structure, a protective shell is installed on one side of the adapter frame, and a stepping motor is installed on the upper surface of the adapter frame; the auxiliary structure is located on the side, close to the protective shell, of the transfer frame, the auxiliary structure comprises a connecting ring, the connecting ring is connected with the transfer frame through a fixing structure, the inner wall of the connecting ring is slidably connected with a connecting block, and clamping grooves are formed in the two sides of the connecting block; two elastic blocks are fixedly connected to the inner wall of the connecting ring, the elastic blocks are matched with the clamping grooves, a support is fixedly connected to the end, away from the connecting ring, of the connecting block, and a detection device