Upper support rivet welding positioning tool

The utility model relates to an upper support rivet welding positioning tool, and belongs to the technical field of tower cranes. Comprising tool lug plate bases, lug plate flitches, panels, square tubes and inclined struts, the tool lug plate bases and the lug plate flitches are welded together to form tool lug plates, a tool lug plate welding machine is arranged on the panels, the square tubes and the inclined struts are welded together to form a tool base, and the panels are arranged at the four corners of the tool base. The tool has the beneficial effects that the tool is low in cost and simple in structure, and is formed by welding a truss serving as a tool chassis; the product production cost is low, the upper support lug plate adopts pre-hole machining, flame cutting or drilling can be adopted for machining pre-holes for rapid cutting, the later machining amount is small, and the machining cost is low; and compared with a traditional machining mode, a numerical control machining center is adopted for l