Power transmission device for electric power communication system

The utility model discloses a power transmission device for an electric power communication system, which comprises a supporting box and a mounting box, the inner surface of the mounting box is slidably connected with a power transmission device body, a lifting assembly is mounted in the supporting box, the lifting assembly comprises a first screw and a second screw, and the first screw and the second screw are slidably connected with each other. The left side of the outer surface of the first screw rod is in threaded connection with a first threaded pipe, the right side of the outer surface of the second screw rod is in threaded connection with a second threaded pipe, supporting rods are rotationally connected to the two sides of the bottom of the mounting box correspondingly, and the bottom end of the supporting rod located on the left side is rotationally connected with the top end of the second threaded pipe. According to the device, the rotating handle is rotated to enable the lifting assembly to lift th