China's machinery manufacturing industry is in an industrial state of transformation and development. The industry's technical level is developing rapidly, production concentration is high, and market access is very large. Our company has advanced machinery manufacturing technology, a group of outstanding machinery manufacturing R&D personnel and perfect standardized quality supervision and management, and is committed to the globalization, networking, automation and green development of the machinery manufacturing industry. A device that turns the welding workpiece around the central axis. Flip welding tooling is dedicated to welding and is an industrial equipment that carries welding parts. The inversion welding tool is connected to the fixing device by the strut to fix the welding device, and the fixing device will be connected with a rotating bearing, so that the fixed clamping device can drive the welding device to rotate, which can facilitate the welding of the welding device. All welding toolings are equipped with a rotating table, so that the welding tooling can only weld one surface when welding the welding device, which makes the working efficiency of the welding tooling relatively low, and cannot quickly perform comprehensive welding on the welding device, and The existing welding tooling cannot be adjusted, so that the welding tooling cannot be adjusted according to the size of the actual welding device, so that the applicable scope of the welding tooling is relatively narrow, and the welding device is directly fixed in the existing technology. On the welding table, and other safety measures for fixing and clamping, the welding device is not safe in use, and it is easy to cause a use accident, so there is an urgent need for a safe welding tool that can be welded on multiple sides and is easy to adjust. . The purpose of the present utility model is to provide an overturn welding tool for the crawler beam of the lower platform of the excavator, which has the advantages of multi-face welding, adjustable height and safe fixation, so as to solve the problems raised in the above background technology. Compared with the prior art, the beneficial effects of the present utility model are: the utility model adopts the screw rod to fasten the clamp, so that the clamp can stably clamp the crawler beam, and the screw rod is connected with a fastening plate, which can prevent the screw rod. When clamping, the track beam is worn, and a hydraulic cylinder is provided to lift the clamp, the height can be adjusted according to the size and length of the track beam, and a fixed plate is provided at the bottom, which can rotate to a vertical position on the track beam When fixing, there is a hanging ring on the beam, which can be used to fix the crawler beam and prevent the crawler beam from falling off during welding.