Device for repairing surface depression of tower drum

The utility model relates to the technical field of wind power tower drum manufacturing and processing, in particular to a device for repairing a concave surface of a tower drum, which comprises a jacking mechanism and a placing base for supporting the tower drum, the jacking mechanism comprises a jacking plate and a jack, a supporting sleeve is vertically arranged at the center of the inner surface of the jacking plate, and the jack is arranged in the supporting sleeve. A fixing plate is arranged at the top of the jack, the telescopic end of the jack is arranged in the supporting sleeve in a sleeved mode, a counterweight assembly is arranged at the top of the fixing plate and comprises a jacking counterweight and a supporting counterweight used for supporting the jacking counterweight, one end of the jacking counterweight is connected with the fixing plate, and the other end of the jacking counterweight is connected with the supporting sleeve. The supporting counter weights are arranged at the bottom of the