Auxiliary steel structure erecting and welding device

The invention relates to the field of welding assistance, in particular to an auxiliary steel structure erecting welding device which comprises a clamping mechanism, a welding mechanism and a steering mechanism, the clamping mechanism is located above a base, and the position of the welding mechanism can be adjusted according to the notch connecting position of a workpiece; a welding gun is connected, and the annular welding seam, the arc-shaped welding seam or the V-shaped welding seam is welded in the surrounding direction through gear transmission; the steering mechanism is installed below the welding mechanism, the welding direction of the welding mechanism can be adjusted, welding of welding seams in various shapes is achieved, clamping of a workpiece is driven in the mode that a clamping piece is electrically controlled, and the situation that the clamping piece is loosened due to external force is prevented; arc-shaped path guiding is provided through the guide plate, welding of multiple special-shaped