Deformation-preventing overturning device for welding of suspension lugs and frames

The invention relates to the technical field of welding, in particular to a deformation-preventing overturning device for welding of suspension lugs and frames. The deformation-preventing overturning device comprises a left overturning weld support, a right overturning weld support and an overturning frame, wherein the two ends of the overturning frame are hinged to the left overturning weld support and the right overturning weld support through bearings; first bottom plates are fixed around the overturning frame, first cushion blocks are fixed to the first bottom plates, and first pressing plates are movably connected to the first cushion blocks; an upper bottom plate, a lower bottom plate, a left bottom plate and a right bottom plate are welded to the middle of the overturning frame, limiting columns and second cushion blocks are welded to the upper bottom plate, the lower bottom plate, the left bottom plate and the right bottom plate, and second pressing plates are movably connected to the second cushion b