DOUBLE TORSIONAL DAMPER

PROBLEM TO BE SOLVED: To provide a double torsional damper for preventing vibration of a power-transmission wire, capable of preventing weights of the damper from falling.SOLUTION: A double torsional damper comprises: an electric wire holding clamp 30 that includes a suppression wire compression hole 37, and a wire net compression hole 39 provided above the suppression wire compression hole 37; and weights 20 each of which has a fixing part 25 for fixing an end of a suppression wire 10. A central portion of the suppression wire 10 is compressed and fixed to the inside of the suppression wire compression hole 37. Both sides of the suppression wire 10 having the central portion compressed and fixed to the inside of the suppression wire compression hole 37 are covered with wire nets 40. One ends of the wire nets 40 on the electric wire holding clamp 30 side are compressed and fixed to the inside of a wire net compression hole 39, and both ends of the suppression wire 10 covered with the wire nets 40 are compressed and fixed to the fixing parts 25 of the weights 20 together with the other ends of the wire nets 40.