To be capable of exchanging hydraulic fluid in an oil path circuit with oil inside a tank even when using a hydraulic power source of a normal rotation/reversal rotation method.SOLUTION: A selector valve group (V) including: a cylinder (13); a hydraulic power source (14) of a normal rotation/reversal rotation method provided with a first discharge port and a second discharge port; an oil storage tank (18); a first oil passage connecting a first chamber (13a) of the cylinder and a first discharge port of the hydraulic power source; a second oil passage connecting a second chamber (13b) of the cylinder and the second discharge port of the hydraulic power source; an oil passage group (C) including one or a plurality of oil passages connecting at least one of the first oil passage and the second oil passage and the oil storage tank is provided with the selector valve group switching between a state when the hydraulic fluid recovered from the cylinder is returned to the oil storage tank and a state when the hydraulic fluid supplied from the hydraulic power source to the cylinder is not returned to the oil storage tank.SELECTED DRAWING: Figure 2

    【課題】正転逆転方式の油圧源を用いた場合であっても、油路回路内の作動油をタンク内の油と入れ替えることができる。【解決手段】シリンダ(13)と、第1の吐出口及び第2の吐出口を備えた正転逆転方式の油圧源(14)と、貯油タンク(18)と、シリンダの第1室(13a)と油圧源の第1の吐出口とを接続する第1の油路と、シリンダの第2室(13b)と油圧源の第2の吐出口とを接続する第2の油路と、第1の油路および第2の油路の少なくとも何れかと貯油タンクとを接続する1又は複数の油路を含む油路群(C)と、油路群に含まれる1又は複数の油路の各々に設けられた切替弁を含む切替弁群(V)であって、油圧源の状態に応じて、シリンダから回収される作動油が貯油タンクに還流する状態と、油圧源からシリンダに供給される作動油が貯油タンクに還流しない状態とを切り替える切替弁群とを備えている。【選択図】図2


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    Title :

    STEERING DEVICE AND STEERING DEVICE FOR VESSEL


    Additional title:

    ステアリング装置及び船舶用ステアリング装置


    Contributors:

    Publication date :

    2020-11-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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