Air compressor coupling overhauling device

The utility model discloses an air compressor coupler overhauling device which comprises a Z-shaped iron plate, a rubber gasket is installed on the outer wall of one side of the Z-shaped iron plate, a welding end is arranged on the inner wall of the side, away from the rubber gasket, of the Z-shaped iron plate, a nut is arranged at the end, away from the Z-shaped iron plate, of the welding end, and a bolt column is in threaded connection with the end, away from the welding end, of the nut. A round through hole is formed in the inner wall of the Z-shaped iron plate below the welding end, one end of the round through hole extends to the outside of the Z-shaped iron plate, and two sets of convex fastening grooves are formed in the Z-shaped iron plate at the position of the rubber gasket. According to the utility model, the maintenance time of the locomotive in the warehouse is shortened, the labor intensity of maintenance workers is reduced, the safety risk is reduced, the maintenance of the locomotive in a serv