Cable construction tightener

The invention belongs to the technical field of cable tightening, and particularly relates to a cable construction tightener which comprises a fixing frame, a rotating column is rotatably connected into the fixing frame, a rope sleeves the circumferential surface of the rotating column, a connecting block is slidably connected to one side of the fixing frame through the rope, and a first hook is rotatably connected to the connecting block. The other side of the fixing frame is rotatably connected with a second hook, the two ends, slidably connected with the rotating column, of the fixing frame are fixedly connected with ratchet wheels, the two ends of the rotating column are rotatably connected with the same rotating handle, the end, close to the ratchet wheels, of the rotating handle is fixedly connected with a connecting rod, and the side, close to the ratchet wheels, of the connecting rod is fixedly connected with two arc-shaped blocks; by arranging the elastic thin steel sheet and the brush on the surface