To suppress fluttering of a forward/backward switchover bucket at advancing.SOLUTION: A forward/backward steering device includes: a steering duct 3 for having water injected from a nozzle 2 circulate inside and flow out by changing over between a rear opening unit 3a and a lower opening unit 3b; a forward/backward switchover bucket 4 for switching a flow destination of water circulating inside the steering duct 3 between the rear opening unit 3a and the lower opening unit 3b; and a cylinder for forward/backward progression 53 for connecting the steering duct 3 to the forward/backward switchover bucket 4 and applying driving force for switching over the forward/backward switchover bucket 4. The cylinder for backward progression 53 is provided so as to be capable of being bent by a two-axis joint 7 having two degree of freedom with a horizontal pin 71 orthogonal to the progressing direction as well as provided on a first rotational axis in the horizontal direction and a vertical pin 73 provided on a second rotational axis in the vertical direction as respective rotational centers. The vertical pin 73 in forward progression is arranged so as to overlap on an extended line of a pivot axis C1 of the steering duct 3.SELECTED DRAWING: Figure 1

    【課題】前進時における前後進切替バケットのばたつきを抑えることができる。【解決手段】ノズル2から噴射された水を内部に流通させて後方開口部3aと下方開口部3bとの間で切り替えて流出させる操舵ダクト3と、操舵ダクト3の内部に流通する水の流出先を、後方開口部3aと下方開口部3bとの間で切り替える前後進切替バケット4と、操舵ダクト3と前後進切替バケット4とを連結し、前後進切替バケット4を切り替える駆動力を与える前後進用シリンダ53と、を備え、後進用シリンダ53は、進行方向に直交し、かつ水平方向の第1回転軸に設けられる横ピン71と、鉛直方向の第2回転軸に設けられる縦ピン73と、をそれぞれ回転中心とする2自由度の二軸継手7により折れ曲げ可能に設けられ、前進時の縦ピン73が操舵ダクト3の旋回軸C1の延長線上に重なるように配置された構成の前後進操舵装置を提供する。【選択図】図1


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    Titel :

    FORWARD/BACKWARD STEERING DEVICE


    Weitere Titelangaben:

    前後進操舵装置


    Beteiligte:
    KIYOFUJI YUKI (Autor:in) / HAYATA KOJI (Autor:in)

    Erscheinungsdatum :

    03.09.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

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




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