Overhaul device for coupler

The utility model relates to the technical field of internal combustion locomotive overhauling, and discloses a coupler overhauling device which comprises a connecting piece and an overhauling assembly, the overhauling assembly is arranged at the outer end of the connecting piece and comprises a U-shaped reinforcing plate, the U-shaped reinforcing plate is movably installed at the outer end of the connecting piece, and the U-shaped reinforcing plate is connected with the connecting piece. A U-shaped clamping plate is fixedly installed at the upper end of the U-shaped reinforcing plate, a pin pressing plate is fixedly installed at the right end of the upper end of the U-shaped reinforcing plate, and a threaded hole is fixedly formed in the pin pressing plate. According to the overhauling device for the coupler, by installing the overhauling assembly, a worker can use a U-shaped clamping plate to adjust a connecting piece and further rotate an adjusting handle, so that an abutting block abuts against the couple