JP2004136782A - Ship with course stabilizing device - Google Patents

Ship with course stabilizing device Download PDF

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Publication number
JP2004136782A
JP2004136782A JP2002303254A JP2002303254A JP2004136782A JP 2004136782 A JP2004136782 A JP 2004136782A JP 2002303254 A JP2002303254 A JP 2002303254A JP 2002303254 A JP2002303254 A JP 2002303254A JP 2004136782 A JP2004136782 A JP 2004136782A
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Prior art keywords
ship
fin
course
vertical shaft
stabilizing device
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JP2002303254A
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JP3937013B2 (en
Inventor
Tomihiro Haraguchi
原口　富博
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National Maritime Research Institute
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National Maritime Research Institute
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/32—Housings
    • B63H20/34—Housings comprising stabilising fins, foils, anticavitation plates, splash plates, or rudders

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ship with a course stabilizing device capable of separately controlling rotary motion of a fin and swinging of a pod propeller as the pod propeller while a stern is provided with a fin serving as a course stabilizing device and capable of effecting full improvement of turn performance of a hull. <P>SOLUTION: In a ship constituted that an under surface 1 of the bottom of a stern part is inclined in a manner to gently rise toward a stern end, a pod propeller 3 is mounted on the lower end of a rotary motion controllable vertical shaft 2 hanging down into water from the rear part of the stern part. A fin 8 for stabilizing a course is fixed at a cylindrical outer shaft 7 disposed in a manner to surround the vertical shaft 2. The fin 8 is situated between the pod propeller 3 and the under surface 1 of the bottom and rotary motion is controlled separately from swinging of the pod propeller 3. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、船尾部にポッドプロペラを備えた船舶に関し、特に上記ポッドプロペラの近傍に針路安定装置を付設された船舶に関する。
【０００２】
【従来の技術】
船尾部の船底下面が船尾端へ向かって緩やかに上昇するように傾斜した船舶において、船尾部の後部から水中へ垂下された旋回可能のポッドプロペラを備える場合、直進時の針路安定性能を図るため、従来は、船尾部にスケグを設けたり、ポッドプロペラの本体上部にフィンを固着したりすることが行われている。
【０００３】
【発明が解決しようとする課題】
ところで、上述のようにポッドプロペラおよびスケグを備える場合は、船体の旋回時にスケグの抵抗によって旋回性能の低下を来し、またポッドプロペラの上部にフィンを固着する場合は、船体の旋回時に上記フィンもポッドプロペラと一体のまま回動してしまうため、船体の効率のよい旋回性能を維持できないという不具合がある。
【０００４】
そこで本発明は、船尾のポッドプロペラに針路安定装置としてのフィンを設けながら、同フィンの回動をポッドプロペラの旋回とは別個に制御できるようにして、船体の旋回性能の十分な向上を図れるようにした針路安定装置付き船舶を提供することを課題とする。
【０００５】
【課題を解決するための手段】
前述の課題を解決するため、本発明の針路安定装置付き船舶は、船尾部の船底下面が船尾端へ向かって緩やかに上昇するように傾斜した船舶において、上記船尾部の後部から水中へ垂下された回動制御可能の鉛直軸と、同鉛直軸の下端に装着されたポッドプロペラとを備え、上記鉛直軸を囲むように配設されて同鉛直軸とは別個に回動制御可能の円筒状外軸と、同外軸に固着されて上記のポッドプロペラと船底下面との間に配設された針路安定用フィンとが装備されていることを特徴としている。
【０００６】
また、本発明の針路安定装置付き船舶は、上記ポッドプロペラの本体下部に回動制御可能に支持された下部鉛直軸を備え、同下部鉛直軸に第２の針路安定用フィンが装着されたことを特徴としている。
【０００７】
さらに、本発明の針路安定装置付き船舶は、上記下部鉛直軸の回動制御手段が、同下部鉛直軸から側方へ突出した動翼と、同動翼を取り囲むように上記下部鉛直軸と同心的に設けられて上記ポッドプロペラの本体下部に固定された油室形成用円筒状ケーシングと、同ケーシングの内壁から内方へ突出した固定翼と、上記ケーシング内で上記の動翼と固定翼との間に形成される油室に対し作動油の供給排出を行う油圧制御系とを備えて構成されたことを特徴としている。
【０００８】
上述の本発明の針路安定装置付き船舶では、船舶の直進航行時には上記ポッドプロペラと船底下面との間に配設された針路安定用フィンの作用により針路保持が適切に行われる。
【０００９】
一方、船舶の旋回時には上記ポッドプロペラを十分に旋回させるようにしながら、上記フィンについては回動角を控えめに適度に制御して、同フィンの発生する水平方向の揚力により、船舶の旋回が効率よく助長されるようになり、これにより十分な旋回性能が得られるようになる。
【００１０】
そして、上記フィンの回動軸は上記ポッドプロペラの鉛直軸を取り囲む円筒状外軸として配設されるので、その回動制御は、船内の電動式駆動制御機構などを用いて容易に行われるようになる。
【００１１】
また、上記ポッドプロペラの下部に回動制御可能に支持された下部鉛直軸に第２の針路安定用フィンが設けられている場合は、同フィンと前述のポッドプロペラ上方のフィンとの協働作用で船体の直進時の針路保持および旋回時の各フィンによる旋回モーメントの発生が適切に行われるようになる。
【００１２】
そして、上記第２の針路安定用フィンの回動軸としての上記下部鉛直軸の回動制御手段としては種々の機構が考えられるが、上述のように上記下部鉛直軸に突設された動翼と、同動翼を取り囲む油室形成用円筒状ケーシングの内壁から内方へ突出した固定翼との間に、複数の油室が形成されて、同油室への作動油の供給排出を行う油圧制御系が設けられる場合は、簡素な構造で上記第２の針路安定用フィンの回動制御が的確に行われるようになる。
【００１３】
また、本発明の針路安定装置付き船舶は、上記下部鉛直軸の回動制御手段が、上記ポッドプロペラの本体内部に設けられたプロペラ駆動用電動機の回転軸と上記下部鉛直軸との間に介装された遠隔制御可能の正逆転切替式クラッチおよび減速歯車機構により構成されていることを特徴としている。
【００１４】
上述のように、第２の針路安定用フィンの回動軸としての上記下部鉛直軸の回動制御手段が、ポッドプロペラの本体内部に設けられたプロペラ駆動用電動機の回転軸と上記下部鉛直軸との間に遠隔制御可能の正逆転切替式クラッチおよび減速歯車機構を設けて構成される場合は、上記電動機の適切な利用により、新たな動力発生手段を必要とせずに上記第２の針路安定用フィンの所要方向への旋回制御が簡便に行われるようになる。
【００１５】
さらに、本発明の針路安定装置付き船舶は、上記第２の針路安定用フィンの下端部に、同フィンから左右へほぼ水平に張り出した翼板が設けられていることを特徴としている。
【００１６】
上述の針路安定装置付き船舶では、第２の針路安定用フィンの下端部から左右へほぼ水平に張り出した翼板により、上記第２の針路安定用フィンの発生する水平方向の揚力を増大させて、船体の旋回性能を向上させるとともに、船体の直進状態では上記翼板による旋回抵抗の増大により船体の針路安定性を一層向上させることができるようになる。
【００１７】
【発明の実施の形態】
以下、図面により本発明の実施形態について説明すると、図１は本発明の第１実施形態としての針路安定装置付き船舶を示す船尾部側面図であり、図２〜４は本発明の第２実施形態としての針路安定装置付き船舶を示すもので、図２はその船尾部側面図、図３は図２の要部の一部を破断して示す側面図、図４は図３のＡ−Ａ矢視断面図であり、図５は図３に対応させて本発明の第３実施形態としての針路安定装置付き船舶の要部を示す側面図であり、図６〜８は本発明の第４実施形態としての針路安定装置付き船舶を示すもので、図６はその船尾部側面図、図７は図６のＢ−Ｂ矢視拡大断面図、図８は図７のＣ−Ｃ線に沿う断面図である。
【００１８】
まず、本発明の第１実施形態としての針路安定装置付き船舶について説明すると、図１に示すように、船尾部の船底下面１が船尾端へ向かって緩やかに上昇するように傾斜したバトック船型を有する船舶において、船尾部の後部から水中へ垂下された円筒状の鉛直軸２が、図示しない軸受により支承されるようにして設けられており、同鉛直軸２の下端にはポッドプロペラ３が装着されている。
【００１９】
そして、鉛直軸２の上端部にはウォームホイール４およびウォーム５からなるギヤセットが装着されて、同ギヤセットを介し電動機６および図示しない制御系による鉛直軸２の回動制御が行われるようになっている。
【００２０】
また、ポッドプロペラ３の本体内部には図示しないプロペラ駆動用電動機が設置されており、同電動機への電力の供給は、船内の電源から円筒状の鉛直軸２の内部を経由する給電ラインにより行われる。
【００２１】
さらに、鉛直軸２を取り囲むように円筒状外軸７が設けられ、同外軸７に固着された針路安定用フィン８が、ポッドプロペラ３と船底下面１との間に配設されて、同フィン８の回動制御は、外軸７の上端部に装着されたウォームホイール９およびウォーム１０からなるギヤセットを介して、電動機１１および図示しない制御系により行われる。
このようにして、フィン８の回動制御は、ポッドプロペラ３の回動制御とは別個に行われるようになっている。
【００２２】
上述の第１実施形態の針路安定装置付き船舶では、船舶の直進航行時にはポッドプロペラ３と船底下面１との間に配設された針路安定用フィン８の作用により適切な針路保持が行われる。
【００２３】
一方、船舶の旋回時にはポッドプロペラ３を十分に旋回させるようにしながら、フィン８については回動角を控えめに適度に制御して、同フィン８の発生する水平方向の揚力により、船舶の旋回が効率よく助長されるようになり、これにより十分な旋回性能が得られるようになる。
【００２４】
そして、フィン８の回動軸はポッドプロペラ３の鉛直軸を取り囲む円筒状外軸７として配設されるので、その回動制御は、船内の電動式駆動機構９〜１１などを用いて容易に行われるようになる。
【００２５】
次に本発明の第２実施形態としての針路安定装置付き船舶について説明すると、図２および図３に示すごとく、この第２実施形態の場合も前述の第１実施形態と同様に、船尾部の船底下面１が船尾端へ向かって緩やかに上昇するように傾斜したバトック船型を有する船舶において、船尾部の後部から水中へ垂下された円筒状の鉛直軸２が、図示しない軸受により支承されるようにして設けられており、同鉛直軸２の下端にはポッドプロペラ３が装着されている。
【００２６】
そして、鉛直軸２の上端部には第１実施形態と同様のウォームホイールおよびウォームのごときギヤセットが装着されて、同ギヤセットを介し電動機および制御系による鉛直軸２の回動制御が行われるようになっている。
【００２７】
また、図３に示すように、ポッドプロペラ３の本体内部にはプロペラ３ａを駆動するための電動機３ｂが設置されており、同電動機３ｂへの電力の供給は、船内の電源から円筒状の鉛直軸２の内部を経由する給電ライン１２により行われる。
【００２８】
この第２実施形態では、特に、ポッドプロペラ３の本体下部に軸受１３を介して支持された下部鉛直軸１４が回動制御可能に設けられて、同下部鉛直軸１４に第２の針路安定用フィンとしての下部フィン１５が設けられている。
【００２９】
そして、下部鉛直軸１４の回動制御手段は、図３および図４に示すように、同下部鉛直軸１４から側方へ突出した動翼１４ａと同動翼１４ａを取り囲むように下部鉛直軸１４と同心的に設けられてポッドプロペラ３の本体下部に固定された油室形成用円筒状ケーシング１６と、同ケーシング１６の内壁から内方へ突出した固定翼１６ａとを備えて構成されており、ケーシング１６内で動翼１４ａおよび固定翼１６ａにより仕切られた各油室１７ａ〜１７ｄへの作動油の供給およびその排出が油孔１８ａ〜１８ｄを通じて行われることにより、下部鉛直軸１４を介し下部フィン１５の回動制御が行われる。
【００３０】
すなわち、図４において各油室１７ａ〜１７ｄへの作動油の給排を矢示のごとく行えば、下部鉛直軸１４はＲ方向へ回動することができ、その作動油の給排のための複数の油管１８（図３参照）は、円筒状の外軸７を通って船内の図示しない油圧制御系へ導かれる。
【００３１】
このようにして、この第２実施形態では、ポッドプロペラ３，針路安定用フィン８および下部フィン１５が、それぞれ別個に回動制御されるように構成されているので、針路安定用フィン８と下部フィン１５との協働作用で船体の直進時の針路保持および旋回時の各フィン８，１５による旋回モーメントの発生が適切に行われるようになる。
【００３２】
そして、下部フィン１５の回動軸としての下部鉛直軸１４の回動制御手段としては下部鉛直軸１４に突設された動翼１４ａと、同動翼１４ａを取り囲む油室形成用円筒状ケーシング１６の内壁から内方へ突出した固定翼１６ａとの間に、油室１７ａ〜１７ｄが形成されて、同油室への作動油の供給排出を行う油圧制御系が設けられるので、簡素な構造で上記第２の針路安定用フィンとしての下部フィン１５の回動制御が的確に行われるようになる。
【００３３】
次に本発明の第３実施形態について説明すると、図５は図４に対応させて本実施形態の針路安定装置付き船舶の要部を示しており、図５において図４と同じ符号は同様の部材を示している。
【００３４】
すなわち、船尾部の船底下面が船尾端へ向かって緩やかに上昇するように傾斜した船舶において、船尾部の後部から水中へ垂下された回動制御可能の円筒状の鉛直軸２の下端にポッドプロペラ３が固着されており、鉛直軸２を取り囲むように配設されて同鉛直軸２とは別個に回動制御可能の円筒状外軸７に、針路安定用フィン８が固着されている。
【００３５】
この第３実施形態では、ポッドプロペラ３の本体下部に軸受１３を介して支持され下部フィン１５を装着された下部鉛直軸１４が、ポッドプロペラ３の本体内部のプロペラ駆動用電動機３ｂによって回転駆動されるようになっていて、同電動機３ｂの回転軸と下部鉛直軸１４との間には、制御ライン１９を介して遠隔制御可能の正逆転切替式クラッチ２０および減速歯車機構２１が介装されている。
そして、減速歯車機構２１の最終段階にはウォーム２１ａおよびウォームホイール２１ｂからなるギヤセットが配設されている。
【００３６】
上述のように、この第３実施形態では、第２の針路安定用フィン（下部フィン１５）の回動軸としての下部鉛直軸１４の回動制御手段が、ポッドプロペラ３の本体内部に設けられたプロペラ駆動用電動機３ｂの回転軸と下部鉛直軸１４との間に遠隔制御可能の正逆転切替式クラッチ２０および減速歯車機構２１を設けて構成されるので、電動機３ｂの適切な利用により、新たな動力発生手段を必要とせずに第２の針路安定用フィンとしての下部フィン１５の所要方向への回動制御が簡便に行われるようになる。
【００３７】
次に、図６〜８に示す本発明の第４実施形態では、前述の第２実施形態や第３実施形態と同様の針路安定装置付き船舶において、下部フィン１５の下部から左右へほぼ水平に張り出した翼板２２が設けられており、同翼板２２の後縁部には回動制御可能の補助翼２２ａが設けれらるとともに、同翼板２２の左右両端部には側方へ反り上がった安定翼２２ｂが設けられている。
なお、図６，７において前述の各実施形態と同じ符号は同様の部材を示している。
【００３８】
上述の第４実施形態では前述の図２に示す第２実施形態と同様の作用効果が得られるほか、下部フィン１５の下端部に設けられた翼板２２の作用により下部フィン１５の揚力を増大させて、船体の旋回性能の向上をもたらす効果が得られるようになる。
【００３９】
また下部フィン１５の存在により旋回抵抗の増加がもたらされて、これに伴い船体の針路安定性が一層向上するようになる利点も得られる。
そして、下部フィン１５の後縁部に設けられた補助翼の回動を船体に装備された図示しないピッチングセンサからの検出信号に基づき制御することにより、船体のピッチングを低減させる効果も得られるようになる。
【００４０】
【発明の効果】
以上詳述したように、本発明の針路安定装置付き船舶によれば次のような効果が得られる。
（１）　船舶の直進航行時には上記ポッドプロペラと船底下面との間に配設された針路安定用フィンの作用により針路保持が的確に行われる。一方、船舶の旋回時には上記ポッドプロペラを十分に旋回させるようにしながら、上記フィンについては回動角を控えめに適度に制御して、同フィンの発生する水平方向の揚力により、船舶の旋回が効率よく助長されるようになり、これにより十分な旋回性能が得られるようになる。そして、上記フィンの回動軸は上記ポッドプロペラの鉛直軸を取り囲む円筒状外軸として配設されるので、その回動制御は、船内の電動式駆動制御機構などを用いて容易に行われるようになる。
（２）　上記ポッドプロペラの本体下部に回動制御可能に支持された下部鉛直軸に第２の針路安定用フィンが設けられている場合は、同フィンと前述のポッドプロペラ上方のフィンとの協働作用で船体の直進時の針路保持および旋回時の各フィンによる旋回モーメントの発生が適切に行われるようになる。
（３）　上記下部鉛直軸に突設された動翼と、同動翼を取り囲む油室形成用円筒状ケーシングの内壁から内方へ突出した固定翼との間に、複数の油室が形成されて、同油室への作動油の供給排出を行う油圧制御系が設けられる場合は、簡素な構造で上記第２の針路安定用フィンの回動制御が的確に行われるようになる。
（４）　第２の針路安定用フィンの回動軸としての上記下部鉛直軸の回動制御手段が、ポッドプロペラの本体内部に設けられたプロペラ駆動用電動機の回転軸と上記下部鉛直軸との間に遠隔制御可能の正逆転切替式クラッチおよび減速歯車機構を設けて構成される場合は、上記電動機の適切な利用により、新たな動力発生手段を必要とせずに上記第２の針路安定用フィンの所要方向への回動制御が簡便に行われるようになる。
（５）　第２の針路安定用フィンの下端部から左右へほぼ水平に張り出した翼板により、上記第２の針路安定用フィンの発生する水平方向の揚力を増大させて、船体の旋回性能を向上させるとともに、船体の直進状態では上記翼板による旋回抵抗の増大により船体の針路安定性を一層向上させることができるようになる。
【図面の簡単な説明】
【図１】本発明の第１実施形態としての針路安定装置付き船舶を示す船尾部側面図である。
【図２】本発明の第２実施形態としての針路安定装置付き船舶を示す船尾部側面図である。
【図３】図２の要部を拡大し一部を破断して示す側面図である。
【図４】図３のＡ−Ａ矢視断面図である。
【図５】図３に対応させて本発明の第３実施形態としての針路安定装置付き船舶の要部を破断して示す側面図である。
【図６】本発明の第４実施形態としての針路安定装置付き船舶の船尾部側面図である。
【図７】図６のＢ−Ｂ矢視拡大断面図である。
【図８】図７のＣ−Ｃ線に沿う断面図である。
【符号の説明】
１　船尾部船底下面
２　鉛直軸
３　ポッドプロペラ
３ａ　プロペラ
３ｂ　電動機
４　ウォームホイール
５　ウォーム
６　電動機
７　円筒状外軸
８　針路安定用フィン
９　ウォームホイール
１０　ウォーム
１１　電動機
１２　給電ライン
１３　軸受
１４　下部鉛直軸
１４ａ　動翼
１５　第２の針路安定用フィン（下部フィン）
１６　油室形成用円筒状ケーシング
１７ａ〜１７ｄ　油室
１８　油管
１８ａ〜１８ｄ　油孔
１９ａ〜１９ｄ　制御ライン
２０　クラッチ
２１　減速歯車機構
２１ａ　ウォーム
２１ｂ　ウォームホイール
２２　翼板
２２ａ　補助翼
２２ｂ　安定翼[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a ship provided with a pod propeller at the stern, and more particularly to a ship provided with a course stabilizing device near the pod propeller.
[0002]
[Prior art]
In the case of a ship that is inclined so that the underside of the stern bottom rises gently toward the stern end and has a turnable pod propeller that is suspended from the rear part of the stern into the water, to improve the course stability performance when going straight ahead Conventionally, a skeg is provided at the stern portion, and a fin is fixed to the upper portion of the main body of the pod propeller.
[0003]
[Problems to be solved by the invention]
By the way, when the pod propeller and the skeg are provided as described above, the turning performance is reduced due to the resistance of the skeg when the hull turns, and when the fin is fixed to the upper part of the pod propeller, the fin is turned when the hull turns. However, since the hull rotates together with the pod propeller, the hull cannot maintain efficient turning performance.
[0004]
Therefore, the present invention can improve the turning performance of the hull sufficiently by providing a fin as a course stabilizing device on the stern pod propeller and controlling the rotation of the fin separately from the turning of the pod propeller. It is an object to provide a ship with a course stabilizing device as described above.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, a ship with a course stabilizing device of the present invention is a ship in which the bottom surface of the stern is inclined so as to gradually rise toward the stern end. A vertical axis capable of rotation control, and a pod propeller mounted at the lower end of the vertical axis, and a cylindrical shape arranged so as to surround the vertical axis and capable of rotation control separately from the vertical axis. An outer shaft and a course stabilizing fin fixed to the outer shaft and disposed between the pod propeller and the bottom surface of the ship bottom are provided.
[0006]
Further, the ship with a course stabilizing device of the present invention includes a lower vertical shaft rotatably controlled below the main body of the pod propeller, and a second course fin is mounted on the lower vertical shaft. It is characterized by.
[0007]
Further, in the ship with a course stabilizing device of the present invention, the rotation control means for the lower vertical axis may include a moving blade protruding laterally from the lower vertical axis, and a concentric with the lower vertical axis surrounding the moving blade. An oil chamber forming cylindrical casing fixed to the lower part of the main body of the pod propeller, fixed wings projecting inward from the inner wall of the casing, and the moving blade and fixed wing within the casing. And a hydraulic control system that supplies and discharges hydraulic oil to and from an oil chamber formed between the oil chambers.
[0008]
In the ship with the course stabilizing device of the present invention described above, the course is properly held by the action of the course stabilizing fins disposed between the pod propeller and the bottom surface of the ship bottom when the ship is going straight ahead.
[0009]
On the other hand, when turning the ship, the pod propeller is sufficiently turned, and the turning angle of the fins is controlled moderately and moderately. It will be well promoted, and this will provide sufficient turning performance.
[0010]
Since the rotation axis of the fin is disposed as a cylindrical outer shaft surrounding the vertical axis of the pod propeller, the rotation control is performed easily by using an electric drive control mechanism in the ship. become.
[0011]
In the case where a second fin for stabilizing a course is provided on a lower vertical shaft supported in a lower part of the pod propeller so as to be controllable in rotation, the fin and the fin above the pod propeller cooperate with each other. As a result, the course is maintained when the hull is moving straight, and the turning moment is generated by each fin when turning.
[0012]
Various mechanisms can be considered as the rotation control means of the lower vertical axis as the rotation axis of the second course stabilizing fin. As described above, the moving blade protruding from the lower vertical axis is used. A plurality of oil chambers are formed between the inner casing and the fixed wings projecting inward from the inner wall of the oil chamber forming cylindrical casing surrounding the rotor blades, and supply and discharge hydraulic oil to the oil chambers. When the hydraulic control system is provided, the rotation control of the second course stabilizing fin can be accurately performed with a simple structure.
[0013]
Further, in the ship with a course stabilizing device of the present invention, the rotation control means for the lower vertical shaft is provided between the rotation shaft of a propeller driving motor provided inside the main body of the pod propeller and the lower vertical shaft. And a remote controllable forward / reverse switching clutch mounted thereon and a reduction gear mechanism.
[0014]
As described above, the rotation control means of the lower vertical axis as the rotation axis of the second course stabilizing fin includes the rotation axis of the electric motor for driving the propeller provided inside the main body of the pod propeller and the lower vertical axis. And a remote controllable forward / reverse switching clutch and a reduction gear mechanism provided between the first and second motors, the second motor can be stabilized without the need for new power generating means by appropriate use of the electric motor. The turning control of the working fin in the required direction can be easily performed.
[0015]
Further, the ship with a course stabilizing device of the present invention is characterized in that a wing plate projecting substantially horizontally from the fin to the left and right is provided at the lower end of the second course stabilizing fin.
[0016]
In the above-mentioned ship with a course stabilizing device, the horizontal lift generated by the second course stabilizing fin is increased by the wing plate that extends substantially horizontally from the lower end of the second course stabilizing fin. In addition, the turning performance of the hull can be improved, and in the straight running state of the hull, the turning stability of the hull can be increased to further improve the course stability of the hull.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a side view of a stern showing a ship with a course stabilizing device as a first embodiment of the present invention, and FIGS. 2 to 4 are second embodiment of the present invention. 2 shows a ship with a course stabilizing device as a form, FIG. 2 is a side view of the stern part, FIG. 3 is a side view showing a part of a main part of FIG. 2 cut away, and FIG. 5 is a side view showing a main part of a ship with a course stabilizing device as a third embodiment of the present invention corresponding to FIG. 3, and FIGS. 6 to 8 are fourth views of the present invention. 6 shows a ship with a course stabilizing device as an embodiment, FIG. 6 is a side view of the stern, FIG. 7 is an enlarged cross-sectional view taken along the line BB of FIG. 6, and FIG. 8 is along the line CC of FIG. It is sectional drawing.
[0018]
First, a ship with a course stabilizing device according to a first embodiment of the present invention will be described. As shown in FIG. 1, a buttocks hull form in which the bottom surface 1 of the stern is gradually raised toward the stern end is shown. In a ship having a stern, a cylindrical vertical shaft 2 suspended from the rear of the stern into the water is provided so as to be supported by a bearing (not shown), and a pod propeller 3 is attached to a lower end of the vertical shaft 2. Have been.
[0019]
A gear set including a worm wheel 4 and a worm 5 is mounted on the upper end of the vertical shaft 2, and the rotation of the vertical shaft 2 is controlled by the electric motor 6 and a control system (not shown) via the gear set. I have.
[0020]
An electric motor for driving a propeller (not shown) is installed inside the main body of the pod propeller 3, and power is supplied to the electric motor from a power supply in the ship by a power supply line passing through the inside of the cylindrical vertical shaft 2. Is
[0021]
Further, a cylindrical outer shaft 7 is provided so as to surround the vertical shaft 2, and a course stabilizing fin 8 fixed to the outer shaft 7 is disposed between the pod propeller 3 and the bottom surface 1 of the ship. The rotation control of the fins 8 is performed by a motor 11 and a control system (not shown) via a gear set including a worm wheel 9 and a worm 10 mounted on the upper end of the outer shaft 7.
In this way, the rotation control of the fins 8 is performed separately from the rotation control of the pod propeller 3.
[0022]
In the ship with the course stabilizing device of the above-described first embodiment, when the ship travels straight, the course is properly held by the action of the course stabilizing fins 8 arranged between the pod propeller 3 and the bottom surface 1 of the ship bottom.
[0023]
On the other hand, while turning the pod propeller 3 sufficiently while turning the ship, the turning angle of the fins 8 is controlled moderately and moderately, and the turning of the ship is caused by the horizontal lift generated by the fins 8. Efficient promotion is achieved, and thereby sufficient turning performance can be obtained.
[0024]
Since the rotating shaft of the fin 8 is provided as the cylindrical outer shaft 7 surrounding the vertical axis of the pod propeller 3, its rotating control can be easily performed by using the electric drive mechanisms 9 to 11 in the ship. Will be done.
[0025]
Next, a ship with a course stabilizing device according to a second embodiment of the present invention will be described. As shown in FIGS. 2 and 3, in the case of the second embodiment, as in the first embodiment, In a boat having a buttock hull form in which the bottom surface 1 of the stern is inclined so as to gradually rise toward the stern end, a cylindrical vertical shaft 2 suspended from the rear of the stern into the water is supported by a bearing (not shown). A pod propeller 3 is attached to a lower end of the vertical shaft 2.
[0026]
A worm wheel and a gear set such as a worm similar to those of the first embodiment are mounted on the upper end of the vertical shaft 2 so that the rotation of the vertical shaft 2 is controlled by an electric motor and a control system via the gear set. Has become.
[0027]
As shown in FIG. 3, an electric motor 3b for driving the propeller 3a is installed inside the main body of the pod propeller 3, and electric power is supplied to the electric motor 3b from a power supply in the ship in a cylindrical vertical direction. This is performed by a power supply line 12 passing through the inside of the shaft 2.
[0028]
In the second embodiment, in particular, a lower vertical shaft 14 supported via a bearing 13 is provided at a lower portion of the main body of the pod propeller 3 so as to be capable of rotation control, and the lower vertical shaft 14 is provided with a second course stabilizing device. A lower fin 15 as a fin is provided.
[0029]
As shown in FIGS. 3 and 4, the rotation control means of the lower vertical shaft 14 includes a moving blade 14 a projecting laterally from the lower vertical shaft 14 and a lower vertical shaft 14 surrounding the moving blade 14 a. An oil chamber forming cylindrical casing 16 provided concentrically and fixed to a lower portion of the main body of the pod propeller 3, and fixed wings 16a protruding inward from an inner wall of the casing 16. The supply and discharge of hydraulic oil to and from each of the oil chambers 17a to 17d partitioned by the moving blades 14a and the fixed blades 16a in the casing 16 are performed through the oil holes 18a to 18d. 15 rotation control is performed.
[0030]
That is, in FIG. 4, if the supply and discharge of the hydraulic oil to and from the oil chambers 17a to 17d are performed as shown by the arrows, the lower vertical shaft 14 can rotate in the R direction, and the supply and discharge of the hydraulic oil are performed. The plurality of oil pipes 18 (see FIG. 3) are guided to a hydraulic control system (not shown) in the ship through the cylindrical outer shaft 7.
[0031]
As described above, in the second embodiment, the pod propeller 3, the course stabilizing fin 8, and the lower fin 15 are configured to be separately controlled in rotation. Cooperation with the fins 15 allows the fins 8 and 15 to appropriately generate the turning moment when the hull keeps the course when the hull moves straight and turns.
[0032]
As a rotation control means of the lower vertical shaft 14 as a rotation shaft of the lower fin 15, a moving blade 14a protruding from the lower vertical shaft 14 and an oil chamber forming cylindrical casing 16 surrounding the moving blade 14a are provided. Oil chambers 17a to 17d are formed between the fixed blades 16a protruding inward from the inner wall of the oil chamber, and a hydraulic control system for supplying and discharging hydraulic oil to and from the oil chamber is provided. The rotation control of the lower fin 15 as the second course stabilizing fin is accurately performed.
[0033]
Next, a third embodiment of the present invention will be described. FIG. 5 shows a main part of a ship with a course stabilizing device of the present embodiment corresponding to FIG. 4, and the same reference numerals in FIG. The members are shown.
[0034]
That is, in a ship in which the bottom surface of the stern is inclined so as to gradually rise toward the end of the stern, a pod propeller is provided at the lower end of a rotation-controllable cylindrical vertical shaft 2 suspended from the rear of the stern into the water. A fixed path fin 8 is fixed to a cylindrical outer shaft 7 which is disposed so as to surround the vertical shaft 2 and can be controlled to rotate separately from the vertical shaft 2.
[0035]
In the third embodiment, a lower vertical shaft 14 supported by a lower part of a body of the pod propeller 3 via a bearing 13 and having a lower fin 15 mounted thereon is rotationally driven by a propeller driving motor 3b inside the body of the pod propeller 3. A forward / reverse switching clutch 20 and a reduction gear mechanism 21 that can be remotely controlled via a control line 19 are interposed between the rotating shaft of the electric motor 3 b and the lower vertical shaft 14. I have.
In the final stage of the reduction gear mechanism 21, a gear set including a worm 21a and a worm wheel 21b is provided.
[0036]
As described above, in the third embodiment, the rotation control means of the lower vertical shaft 14 as the rotation axis of the second course stabilizing fin (lower fin 15) is provided inside the main body of the pod propeller 3. The remote controllable forward / reverse switching clutch 20 and the reduction gear mechanism 21 are provided between the rotating shaft of the propeller driving motor 3b and the lower vertical shaft 14, so that the proper use of the motor 3b The rotation control of the lower fin 15 as a second course stabilizing fin in a required direction can be easily performed without requiring a simple power generating means.
[0037]
Next, in a fourth embodiment of the present invention shown in FIGS. 6 to 8, in a ship with a course stabilizing device similar to the second and third embodiments described above, the lower fin 15 is substantially horizontally moved from the lower portion to the left and right. An overhanging wing plate 22 is provided. At the rear edge of the wing plate 22, a rotation-controllable auxiliary wing 22 a is provided, and at both left and right ends of the wing plate 22, side warpage is provided. A raised stable wing 22b is provided.
6 and 7, the same reference numerals as those in the above-described embodiments indicate the same members.
[0038]
In the above-described fourth embodiment, the same operation and effects as those of the above-described second embodiment shown in FIG. 2 are obtained, and the lift of the lower fin 15 is increased by the action of the blade plate 22 provided at the lower end of the lower fin 15. As a result, the effect of improving the turning performance of the hull can be obtained.
[0039]
In addition, the presence of the lower fins 15 increases turning resistance, thereby providing an advantage that the course stability of the hull is further improved.
By controlling the rotation of the auxiliary wing provided on the rear edge of the lower fin 15 based on a detection signal from a pitching sensor (not shown) mounted on the hull, an effect of reducing the pitching of the hull can be obtained. become.
[0040]
【The invention's effect】
As described above in detail, the following effects can be obtained by the ship with the course stabilizing device of the present invention.
(1) The course is maintained accurately by the action of the course stabilizing fins disposed between the pod propeller and the lower surface of the ship bottom when the ship travels straight. On the other hand, when turning the ship, the pod propeller is sufficiently turned, and the turning angle of the fins is controlled moderately and moderately. It will be well promoted, and this will provide sufficient turning performance. Since the rotation axis of the fin is disposed as a cylindrical outer shaft surrounding the vertical axis of the pod propeller, the rotation control is performed easily by using an electric drive control mechanism in the ship. become.
(2) When a second course stabilizing fin is provided on a lower vertical shaft rotatably controlled below the main body of the pod propeller, the fin and the fin above the pod propeller are cooperated. By the action, the course is maintained when the hull is moving straight and the turning moment is generated by each fin when turning.
(3) A plurality of oil chambers are formed between the moving blade protruding from the lower vertical axis and the fixed blade protruding inward from the inner wall of the oil chamber forming cylindrical casing surrounding the moving blade. When a hydraulic control system for supplying and discharging hydraulic oil to and from the oil chamber is provided, the rotation control of the second course stabilizing fin can be accurately performed with a simple structure.
(4) The rotation control means of the lower vertical axis as the rotation axis of the second course stabilizing fin is provided between the rotation axis of the propeller driving motor provided inside the body of the pod propeller and the lower vertical axis. In the case where a remote-controllable forward / reverse switching clutch and a reduction gear mechanism are provided between the second motor and the second motor, a suitable use of the electric motor eliminates the necessity of a new power generation means, and the second heading stabilizing fin is not required. Is easily controlled in the required direction.
(5) The horizontal lift generated by the second course stabilizing fin is increased by the wing plate projecting horizontally from the lower end of the second course stabilizing fin to the left and right, thereby improving the turning performance of the hull. In addition, when the hull is in a straight running state, the turning resistance of the wing plate increases, so that the course stability of the hull can be further improved.
[Brief description of the drawings]
FIG. 1 is a stern side view showing a ship with a course stabilizing device as a first embodiment of the present invention.
FIG. 2 is a stern side view showing a ship with a course stabilizing device as a second embodiment of the present invention.
FIG. 3 is a side view showing an enlarged main part of FIG.
FIG. 4 is a sectional view taken along the line AA of FIG. 3;
FIG. 5 is a side view, corresponding to FIG. 3, of an essential part of a ship with a course stabilizing device as a third embodiment of the present invention, cut away.
FIG. 6 is a stern side view of a ship with a course stabilizing device according to a fourth embodiment of the present invention.
FIG. 7 is an enlarged cross-sectional view taken along the line BB of FIG. 6;
FIG. 8 is a sectional view taken along line CC of FIG. 7;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stern bottom surface 2 Vertical axis 3 Pod propeller 3a Propeller 3b Electric motor 4 Worm wheel 5 Worm 6 Electric motor 7 Cylindrical outer shaft 8 Course stabilizing fin 9 Worm wheel 10 Worm 11 Electric motor 12 Power supply line 13 Bearing 14 Lower vertical shaft 14A Wing 15 Second course stabilizing fin (lower fin)
16 Cylindrical casings 17a-17d for forming an oil chamber 17a-17d Oil chamber 18 Oil pipes 18a-18d Oil holes 19a-19d Control line 20 Clutch 21 Reduction gear mechanism 21a Worm 21b Worm wheel 22 Blade plate 22a Auxiliary wing 22b Stable wing

Claims (5)

船尾部の船底下面が船尾端へ向かって緩やかに上昇するように傾斜した船舶において、上記船尾部の後部から水中へ垂下された回動制御可能の鉛直軸と、同鉛直軸の下端に装着されたポッドプロペラとを備え、上記鉛直軸を囲むように配設されて同鉛直軸とは別個に回動制御可能の円筒状外軸と、同外軸に固着されて上記のポッドプロペラと船底下面との間に配設された針路安定用フィンとが装備されていることを特徴とする、針路安定装置付き船舶。In a ship in which the bottom surface of the stern is inclined so as to gradually rise toward the stern end, a vertically controllable rotation-pending vertical shaft suspended from the rear of the stern into the water, and attached to a lower end of the vertical shaft. A cylindrical outer shaft that is disposed so as to surround the vertical shaft and that can be controlled to rotate separately from the vertical shaft; and the pod propeller and the lower surface of the ship bottom fixed to the outer shaft. And a course stabilizing fin disposed between the ship and the ship. 請求項１に記載の針路安定装置付き船舶において、上記ポッドプロペラの本体下部に回動制御可能に支持された下部鉛直軸を備え、同下部鉛直軸に第２の針路安定用フィンが装着されたことを特徴とする、針路安定装置付き船舶。2. The ship with a course stabilizing device according to claim 1, further comprising a lower vertical shaft rotatably supported below the main body of the pod propeller, and a second course stabilizing fin mounted on the lower vertical shaft. A ship with a course stabilizing device. 請求項２に記載の針路安定装置付き船舶において、上記下部鉛直軸の回動制御手段が、同下部鉛直軸から側方へ突出した動翼と、同動翼を取り囲むように上記下部鉛直軸と同心的に設けられて上記ポッドプロペラの本体下部に固定された油室形成用円筒状ケーシングと、同ケーシングの内壁から内方へ突出した固定翼と、上記ケーシング内で上記の動翼と固定翼との間に形成される油室に対し作動油の供給排出を行う油圧制御系とを備えて構成されたことを特徴とする、針路安定装置付き船舶。3. The ship with a course stabilizing device according to claim 2, wherein the rotation control means of the lower vertical axis includes a moving blade protruding laterally from the lower vertical axis, and the lower vertical axis surrounding the moving blade. A cylindrical casing for forming an oil chamber, which is provided concentrically and fixed to the lower part of the main body of the pod propeller, fixed wings projecting inward from the inner wall of the casing, and the above-mentioned moving blade and fixed wing within the casing. A hydraulic control system for supplying and discharging hydraulic oil to and from an oil chamber formed between the vessel and the oil chamber. 請求項２に記載の針路安定装置付き船舶において、上記下部鉛直軸の回動制御手段が、上記ポッドプロペラの本体内部に設けられたプロペラ駆動用電動機の回転軸と上記下部鉛直軸との間に介装された遠隔制御可能の正逆転切替式クラッチおよび減速歯車機構により構成されていることを特徴とする、針路安定装置付き船舶。3. The boat with a course stabilizing device according to claim 2, wherein the rotation control means of the lower vertical shaft is provided between a rotation shaft of a propeller driving motor provided inside the main body of the pod propeller and the lower vertical shaft. A ship with a course stabilizing device, comprising a remotely controlled forward / reverse switching clutch capable of being interposed and a reduction gear mechanism. 請求項２〜４のいずれか１つに記載の針路安定装置付き船舶において、上記第２の針路安定用フィンの下端部に、同フィンから左右へほぼ水平に張り出した翼板が設けられていることを特徴とする、針路安定装置付き船舶。5. The boat with a course stabilizing device according to claim 2, wherein a wing plate is provided at a lower end of the second course stabilizing fin so as to extend substantially horizontally from the fin to the left and right. A ship with a course stabilizing device.
JP2002303254A 2002-10-17 2002-10-17 Ship with course stabilizer Expired - Lifetime JP3937013B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100348458C (en) * 2005-10-13 2007-11-14 上海交通大学 Fish shape simulating nacelle propeller
WO2012035913A1 (en) * 2010-09-15 2012-03-22 三菱重工業株式会社 Marine propulsion apparatus
KR101625529B1 (en) 2014-08-29 2016-05-30 삼성중공업 주식회사 Apparatus for reducing resistance of vessel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100348458C (en) * 2005-10-13 2007-11-14 上海交通大学 Fish shape simulating nacelle propeller
WO2012035913A1 (en) * 2010-09-15 2012-03-22 三菱重工業株式会社 Marine propulsion apparatus
KR101625529B1 (en) 2014-08-29 2016-05-30 삼성중공업 주식회사 Apparatus for reducing resistance of vessel

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