The invention discloses a marine knuckle boom crane, belongs to the technical field of shipbuilding, and the crane comprises a base, a stand column and a telescopic boom, wherein the telescopic boom is controlled through a first oil cylinder; a hoist engine is arranged at the lower end of the telescopic boom; the extension end of the telescopic boom is provided with a metal shell used for enclosing a electromagnet; a toggle switch electrically connected with the electromagnet is arranged on the metal shell; the switch bar of the toggle switch stretches out of the metal shell, and a switch oil cylinder is connected between the outside of the boom body of the telescopic boom and the switch bar; an inner arm, which is controlled to be folded through a third oil cylinder, is hinged between the top end of the stand column and the telescopic boom; a second oil cylinder, which is used for folding the telescopic boom, is arranged on the inner arm; the two ends of the second oil cylinder are respectively hinged to the two ends of the inner arm, and the bottom end of the stand column is connected with the base through a slewing bearing. By adopting the marine knuckle boom crane, the problem that a current marine crane cannot load and unload small messy ferrous metal objects, can only perform one-way operation, cannot be folded so as to influence the speed of a ship can be solved.


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    Title :

    Marine knuckle boom crane


    Contributors:

    Publication date :

    2015-08-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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