Pipe die surfacing welding machine

The utility model provides a pipe die surfacing welding machine which is reasonable in structural design, low in labor intensity and high in production efficiency. The middle of the swing rod is hinged to the supporting frame. The balancing weight is installed at one end of the swing rod, and the carbon brush base is hinged to the other end of the swing rod. The limiting rods are installed on theswing rod and located on the two sides of the carbon brush base. The carbon brush is arranged on the carbon brush seat; the wire is connected with the carbon brush; the riding wheel device comprises adriving riding wheel mechanism and a driven riding wheel mechanism, and the driving riding wheel mechanism and the driven riding wheel mechanism are arranged side by side. The driving riding wheel mechanism comprises a driving riding wheel, a driving riding wheel support and a motor, the driving riding wheel is rotationally installed on the driving riding wheel support, and the motor is connectedwith the driving riding wh