The invention provides a pitch self-locking device for a controllable-pitch propeller and belongs to the field of ships. The device comprises a valve core and a valve sleeve, wherein the valve core isinserted into the valve sleeve in a sliding manner, one end of the valve core is connected with an oil pipe assembly, one end of the valve sleeve is connected with a piston of the variable-pitch oilcylinder, an oil return port, a forward oil inlet and a reverse oil inlet are formed in the valve core, the oil return port is communicated with an oil return port of the oil pipe assembly, the forward oil inlet and the reverse oil inlet are both communicated with an oil inlet of the oil pipe assembly, the reversing oil inlet, the oil return port and the ahead oil inlet are sequentially formed from one end of the valve element to the other end of the valve element, a first oil port and a second oil port are formed in the valve sleeve, the first oil port is communicated with an ahead oil cylinder cavity of the variable-pitch oil cylinder, and the second oil port is communicated with a reversing oil cylinder cavity of the variable-pitch oil cylinder. The pitch self-locking device is advantaged in that the pitch can be automatically compensated under the action of the hydraulic oil, so the piston of the variable pitch oil cylinder is restored to the original position.

    本公开提供了一种用于调距桨的螺距自锁装置,属于船舶领域。所述装置包括阀芯和阀套,阀芯可滑动地插装在阀套中,阀芯的一端与油管组件连接,阀套的一端与变距油缸的活塞连接,阀芯上设置有回油口、正车进油口和倒车进油口,回油口与油管组件的回油口连通,正车进油口和倒车进油口均与油管组件的进油口连通,且倒车进油口、回油口和正车进油口由阀芯的一端朝向另一端依次布置,阀套上设置有第一油口和第二油口,第一油口与变距油缸的正车油缸腔连通,第二油口与变距油缸的倒车油缸腔连通。本公开提供的螺距自锁装置通过液压油的作用能对螺距进行自动补偿,使变距油缸的活塞恢复到原始位置。


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    Title :

    Pitch self-locking device for controllable-pitch propeller


    Additional title:

    用于调距桨的螺距自锁装置


    Contributors:
    WANG JINWEI (author) / QIU XIAOFENG (author) / LI LEI (author) / LI FANGHAI (author) / CHEN CHENG (author) / ZOU BO (author) / CHENG SHUXIAO (author)

    Publication date :

    2020-09-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



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