Three-head tractor

The utility model discloses a three-head traction machine which comprises a rail assembly, a lower traction device and an upper traction device are installed on the rail assembly respectively, clamping devices are installed on the lower traction device and the upper traction device respectively, and rotating motors and traction motors are installed between the lower traction device and the clamping devices and between the upper traction device and the clamping devices respectively. The cutting saw walking device is arranged on one side of the rail assembly, a plurality of cutting saw devices are installed on the cutting saw walking device, the saw blade walking device is arranged at one end of the cutting saw walking device, and the saw blade device is arranged on the saw blade walking device. All actions of the device are driven by a servo motor and an electric appliance to realize each action, the functions are complete, the stability is extremely high, meanwhile, each action is transmitted through a chain