A fulcrum welding device for steel structure

Abstract

The invention relates to the technical field of mechanical processing, and discloses a fulcrum welding device for steel structures, which includes a casing, a conductive block is fixedly installed in the middle of the casing, a welding wire is movably sleeved in the middle of the conductive block, and the right side of the inner cavity of the casing The side is provided with a ventilation groove located on the outside of the conductive block. The invention sets the cyclone windproof mechanism so that when the gas shielded welding is in normal use, the carbon dioxide is normally input into the ventilation groove through the air pump, and the carbon dioxide is allowed to flow in the ventilation groove under the action of separating the cyclone groove from the ventilation groove and connecting them through the steering hole. Under the action of increasing pressure, it flows into the cyclone groove through the steering hole, and under the action of the eccentric and inclined opening of the steering hole and the cylindrical shape inside the cyclone groove, the carbon dioxide gas is transported downward in a whirlwind shape, and the welding is completed. The location forms a cyclone-shaped protection, thereby enhancing the gas shielding ability under the action of centrifugal force, and avoiding the situation that the gas shielded welding cannot work normally when there is a breeze outdoors.

Description

technical field [0001] The invention relates to the technical field of machining, in particular to a fulcrum welding device for steel structures. Background technique [0002] Steel structure is a structure composed of steel materials, which is one of the main types of building structures. The steel structure is mainly composed of steel beams, steel columns, steel trusses, etc. Welds, bolts or rivets are usually used to connect between them. The welding of steel structures is usually divided into arc welding and gas shielded welding. The arc is used as a heat source to melt the welding wire and the base metal to form a molten pool and a welding seam. In order to obtain a good weld seam, an external carbon dioxide gas should be used as the arc medium to protect the molten droplets, the molten pool metal and the high temperature metal in the welding area from Harmful effects of the surrounding air. [0003] In normal use, traditional gas shielded welding is easily affected ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the use of the existing gas shielded welding proposed in the background technology, the present invention provides a fulcrum welding device for steel structures, which has the advantages of cyclone wind protection, auxiliary opening and closing, and enhanced contact, and solves the problem of gas shielded welding. When welding is in normal use, it is not convenient for outdoor processing, gas waste and technical problems of poor internal contact

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