2. The winch is composed of a hollow shaft, a winch, a wire frame, a splitter, etc., and the axial center line of the wire frame and the center line of the main shaft are parallel to each other. A planetary gear retracting mechanism is installed behind the winch, and the mechanism is reversed by the mechanism. The retraction of the bobbin frame is connected with the retracting gear and the in-band spline on the reel frame by the spline, thereby achieving the purpose of retreating, and the reliability thereof is greatly improved; the tension of the pay line in the cradle is adjustable, so that the release is performed. The core tension remains stable and balanced.