Transmission line tower erection security automatic alarm system and construction method

The invention provides a transmission line tower erection security automatic alarm system and a construction method. A tower erection system comprises a base. The bottom of a pole is temporarily fixed on the base through a bearing rope. The upper part of the pole is temporarily fixed on the ground through an external rope. A lifting part is arranged on the pole. One end of a hoisting rope is fixed on a lifted object. The other end is connected with a motorized winch through the lifting part on the pole. The alarm system comprises a tension sensor which is arranged on the rope. The tension sensor is connected with a monitoring device through a wireless network. The monitoring device comprises a controller, a motor winch switch, a voice alarm and a light alarm, wherein the motor winch switch, the voice alarm and the light alarm are respectively connected with the controller. According to the construction method, the tension values of different parts are determined, and a failed part is indicated to instruct the construction of tower erection. The system and the method, which are provided by the invention, have the advantages that the safety in a tower erection process is improved; safety accidents are prevented; and personal safety is protected.