Auxiliary device for preventing welding deformation of thin steel plate

The utility model discloses an auxiliary device for preventing welding deformation of a thin steel plate, which comprises connecting pieces, first reinforcing pieces and fixing pieces, the connecting pieces are arranged on two sides of a steel plate wall, the first reinforcing pieces are fixedly connected onto the connecting pieces along the horizontal direction, the fixing pieces are fixedly connected onto the steel plate wall, and the connecting pieces are provided with fastening pieces. The fastening piece moves towards the steel plate wall and is fixedly connected to the fixing piece, so that the first reinforcing piece is tightly attached to the outer side of the steel plate wall. The steel plate wall is clamped through the horizontally-arranged first reinforcing pieces, the steel plate wall can be symmetrically arranged, deformation of the steel plate wall in the welding process is prevented, the influence of the construction environment on the device is small, and the device can be conveniently and rap