Fixing device for girth welding of wind power generation tower barrel

The utility model is applicable to the technical field of wind power generation tower barrel fixing frames, and provides a fixing device for girth welding of wind power generation tower barrels, which comprises a base, a first barrel vertically arranged on the base, a second barrel arranged at the top end of the first barrel, and a plurality of connecting rods arranged on two sides of the first barrel and the second barrel, clamping mechanisms are further symmetrically arranged, each clamping mechanism comprises a first locking part used for being clamped on the outer side of the first barrel, a second locking part movably connected into the first locking part in a liftable mode, and a driving assembly arranged in the base and movably connected with the clamping mechanisms on the two sides, and when the two bearing seats move away from each other, the first locking part is used for clamping the outer side of the first barrel, the second locking part is movably connected into the first locking part in a liftab