Tightening device for wire and cable installation

The utility model discloses a tightening device for wire and cable installation, which comprises a supporting part, the supporting part is provided with a supporting platform, and the tightening device further comprises a winding device fixed on the surface of the supporting platform and a clamping mechanism fixed on the surface of the supporting platform. The clamping mechanism comprises a lead screw seat, a bidirectional lead screw, two clamping blocks and a driving source. The two-way screw rod is rotatably mounted on the screw rod seat, the center of the two-way screw rod is taken as an intersection point, and the thread directions of the two-way screw rod are positively and negatively distributed; the two clamping blocks are in threaded connection with the positive and negative threaded sections of the bidirectional lead screw respectively, and clamping openings of the two clamping blocks are opposite; the driving source is installed on the lead screw seat, a driving shaft of the driving source is connec