Supporting point welding device used for steel structure

Abstract

The invention relates to the technical field of machining, and discloses a supporting point welding device used for a steel structure. The supporting point welding device used for the steel structure comprises a shell body, a conductive block is fixedly installed in the middle of the shell body, the middle of the conductive block is movably sleeved with a welding wire, and a vent groove located in the outer side of the conductive block is formed in the right side of an inner cavity of the shell body. According to the supporting point welding device used for the steel structure, a cyclone windproof mechanism is arranged, when gas shielded welding is normally used, carbon dioxide is normally input into the vent groove through an air pump, under the action that a cyclone groove and the vent groove are separated and communicate through a steering hole, the carbon dioxide flows into the cyclone groove through the steering hole under the action that the pressure in the vent groove is continuously increased, under the action that the steering hole is eccentrically and obliquely formed and the interior of the cyclone groove is cylindrical, the carbon dioxide gas is downwards conveyed in a cyclone shape, and cyclone shape protection is formed on the welded position, and therefore the gas protection capacity is enhanced under the action of centrifugal force, and the situation that the gas shielded welding cannot work normally when breeze exists outdoors is avoided.

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 ...

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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 pro

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