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.
THRUST CLEARANCE MEASURING DEVICE, THRUST CLEARANCE MEASURING METHOD, AND MARINE VESSEL
SCHUBABSTANDSMESSVORRICHTUNG, SCHUBABSTANDSMESSVERFAHREN UND WASSERFAHRZEUG
DISPOSITIF DE MESURE DE JEU DE POUSSÉE, PROCÉDÉ DE MESURE DE JEU DE POUSSÉE ET NAVIRE MARIN
2024-02-07
Patent
Elektronische Ressource
Englisch
THRUST CLEARANCE MEASURING DEVICE, THRUST CLEARANCE MEASURING METHOD, AND MARINE VESSEL
Europäisches Patentamt | 2022
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