| 摘要 |
An apparatus for actuating an operating valve unit for winch comprising a casing, a first shaft fixedly supported within said casing, second and third shafts rotatably supported within said casing, said second and third shafts being operatively connected with a hook lever and a boom lever, respectively. Said valve unit includes six valves for operating a hook clutch, a hook brake, a boom clutch, a boom brake, a lifting clutch, and a lower clutch, respectively. First and second cams are slidably and rotatably mounted on said first shaft and a third cam is rotatably but not slidably mounted on said first shaft. Said first shaft is operatively connected with said second and third shafts, respectively, so as to selectively actuate said valves in response to operations of said hook lever and said boom lever.
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