Car coupler overhauling tool

The invention discloses a car coupler overhauling tool, and belongs to the technical field of train maintenance equipment. The car coupler overhauling tool comprises a base, an outer fixing part, an inner sliding part and a driving mechanism, wherein the outer fixing part is rotationally matched with the base through rotating shafts fixedly arranged at two ends of the base, the outer end of one rotating shaft penetrates through the base and is fixedly connected with the driving mechanism, the inner sliding part is of a structure which is round outside and square inside, and the inner sliding part is in interference fit with the interior of the outer fixing part. According to the car coupler maintenance tool, not only can the upper angle and the lower angle and the radial angle of a car coupler be adjusted repeatedly, and the detection, flaw detection, overhaul, welding and the like on the car coupler are realized, but also the "tri-state" detection of the car coupler can also be realized. 本发明公开了一种车钩检修工装，属于列车检