Efficient and accurate automatic welding device for building steel structure

The utility model relates to the field of welding equipment, in particular to a building steel structure high-efficiency accurate automatic welding device which comprises an objective table used for bearing a reinforcement cage and a welding module used for welding the reinforcement cage, the objective table comprises a rotating mechanism and a plurality of lifting mechanisms, and one end of the rotating mechanism is used for being inserted into the reinforcement cage to drive the reinforcement cage to deflect. The lifting mechanism is arranged in the axial direction of the reinforcement cage, and the welding module comprises a guide rail, a walking mechanism moving on the guide rail, a mechanical arm arranged on the walking mechanism and an electric welding head arranged on the mechanical arm. The main innovation point is that the part for supporting the reinforcement cage in the device is optimized, and the requirement on a high-performance manipulator can be greatly reduced on the basis of improving the we