| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a winch for a tugboat, which prevents a rope from breaking even if a sudden tension is applied to the rope during towing. <P>SOLUTION: The winch for a tugboat is provided wherein a winch drum winding a towing rope, which freely rotates in both forward and reverse directions and is rotation-controlled, comprises a brake drum which unitedly rotates with the winch drum, a brake band which is flexibly wound around the brake drum in circumferential direction, one end of which is fixed through a load detector and the other end of which is connected to an urging means through a link mechanism, and a brake controller which controls an oil pressure circuit activating the urging means. If a detection result of the load detector exceeds a specified value, the brake controller decreases urging force of the urging means, loosens the brake band and controls braking force of the winch drum so that the rope is let out from the winch drum within a range not exceeding a specified length. <P>COPYRIGHT: (C)2012,JPO&INPIT |
