A marine contra-rotating propeller apparatus (100) comprises: an outer shaft (12) to which the front propeller (1) is attached, an inner shaft (14) to which a rear propeller (2) is attached, a contra-rotating thrust bearing (40) configured to transmit a thrust force acting on the front propeller to the inner shaft, and a contra-rotating gear device (20) configured to rotate the outer shaft and the inner shaft in directions opposite to each other. The contra-rotating gear device (20) has an inner shaft thrust bearing (50) configured to support a thrust force of the inner shaft and hold an axial position of the inner shaft. The thrust clearance measuring device (60) has: an inner shaft position sensor (62) configured to measure a forward-traveling-time inner-shaft position F1 and a backward-traveling-time inner-shaft position R1 in an axial direction during an operation of a marine vessel; and a thrust clearance calculation device (66) configured to calculate a first thrust clearance(C1) of the inner shaft thrust bearing.


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    Title :

    THRUST CLEARANCE MEASURING DEVICE, THRUST CLEARANCE MEASURING METHOD, AND MARINE VESSEL


    Additional title:

    SCHUBABSTANDSMESSVORRICHTUNG, SCHUBABSTANDSMESSVERFAHREN UND WASSERFAHRZEUG
    DISPOSITIF DE MESURE DE JEU DE POUSSÉE, PROCÉDÉ DE MESURE DE JEU DE POUSSÉE ET NAVIRE MARIN


    Contributors:

    Publication date :

    2024-10-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



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