| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent irregular winding of a winch by a simple structure and to achieve highly reliable and responsive control of the rotational frequency in a winch control device for controlling the winch. SOLUTION: In the winch control device 51 for controlling the winch 52 driven by a hydraulic motor 53, the inclined rotation of the hydraulic motor 53 can be fixed in the intermediate range.</p> |
