Auxiliary device for welding steel grating

The utility model belongs to the field of steel grating plates, and particularly relates to an auxiliary device for welding steel grating plates, which comprises a cover body, the inner wall of the cover body is connected with an adsorption plate through a bolt in a penetrating manner, and the surface of the outer wall of the adsorption plate is provided with adsorption holes; through the relation among the absorption pipe, the mounting plate and the cover body, the front-end adsorption plate can be subjected to air draft treatment through the absorption pipe, and meanwhile, smoke dust generated in the steel grating welding process can be integrally absorbed through the adsorption holes; meanwhile, toxic smoke substances generated by welding and absorbed in air above can be filtered and collected through a smoke filter, the toxic smoke substances are intensively discharged through a corrugated pipe and an exhaust pipe at the bottom, an adsorption plate and an absorption pipe are arranged in a cover body, smok