Welding fume collecting device and method for steel reinforcement cage welding

The invention provides a welding fume collecting device and method for reinforcement cage welding. The invention discloses a welding fume collecting device for welding a reinforcement cage. The welding fume collecting device comprises a case body; the fixed flange is fixedly installed in the middle of the top of the case body through bolts. According to the welding fume collecting device for reinforcement cage welding, the purifying machine box and the electric control machine box are matched with each other, a universal air suction arm and an extension pipe are stretched, so that a gathering cover covers the top of the welding position, fume generated during welding is absorbed into the machine box body to be collected and purified, and the welding fume collecting device is simple in structure, high in practicability and suitable for popularization and application. The welding fume collecting opening is formed in the reinforcement cage machining support and connected with the fume purifier through the weldin