Steel structure spraying device

The steel structure spraying device comprises a coating barrel, universal wheels, a nozzle, a heating wire and a motor, a supporting arm is fixedly installed on the outer wall of the coating barrel, a bearing at the end of the supporting arm is connected with a lifting sleeve, an air pipe is fixedly installed on the outer wall of a spraying pipe, a positioning arm is fixedly connected to the inner wall of the air pipe, and the positioning arm is fixedly connected with the universal wheels. A power gear is fixedly mounted at one end of the rotating rod, a fan is fixedly connected to the other end of the rotating rod, a motor is arranged at the upper end of the outer wall of the spray pipe on the side of the transmission mechanism, and a driving gear is fixedly connected to the end of an output shaft of the motor. According to the steel structure spraying device, the air drying efficiency of a coating is improved, the coating is dried in time, the situation that the coating is contaminated with impurities, and