JP3937013B2 - Ship with course stabilizer - Google Patents

Ship with course stabilizer Download PDF

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Publication number
JP3937013B2
JP3937013B2 JP2002303254A JP2002303254A JP3937013B2 JP 3937013 B2 JP3937013 B2 JP 3937013B2 JP 2002303254 A JP2002303254 A JP 2002303254A JP 2002303254 A JP2002303254 A JP 2002303254A JP 3937013 B2 JP3937013 B2 JP 3937013B2
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course
ship
fin
vertical shaft
pod propeller
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JP2004136782A (en
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富博 原口
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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)

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同ポッドプロペラの上下に設けて十分な針路安定性を保持できるようにしながら、上下の各フィンの回動をポッドプロペラの旋回とは別個に、しかも各フィンの回動を個別に制御できるようにすることにより、船体の針路安定性の向上と旋回性能の向上と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第１の針路安定用フィンと、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と、同下部鉛直軸に装着された第２の針路安定用フィンとが設けられて、上記第１の針路安定用フィンと上記第２の針路安定用フィンとを個別に回動制御する制御系が設けられた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。
【０００７】
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第１の針路安定用フィンと上記ポッドプロペラの本体下部に配設された第２の針路安定用フィンとが個別に回動制御されることにより、同ポッドプロペラの上下で異なる流れの状態に対応させながら、針路保持が適切に行われる。
【０００８】
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、上記の第１および第２の各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。
【０００９】
そして、上記第１の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。
【００１０】
また、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、前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。
【００１１】
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。
【００１２】
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。
【００１３】
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。
【００１４】
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。
【００１５】
【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は本発明の実施形態に至る予備的な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１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２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３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。
【００１６】
まず、本発明の実施形態に至る予備的な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。
【００１７】
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。
【００１８】
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。
【００１９】
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。
【００２０】
次に本発明の第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２および図３に示すごとく、この第１実施形態の場合も前述の予備的に示した図１のものと同様に、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。
【００２１】
そして、鉛直軸２の上端部には図１のもの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。
【００２２】
また、図３に示すように、ポッドプロペラ３の本体内部には後部のプロペラ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。
【００２３】
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に固着された第１の針路安定用フィン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図示しない駆動機構および制御系により、図１に示したものと同様に行われる。
【００２４】
この第１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。
【００２５】
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。
【００２６】
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。
【００２７】
このようにして、この第１実施形態では、ポッドプロペラ３と，第１の針路安定用フィン８と、第２の針路安定用フィンとしての下部フィン15とが、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との協働作用による船体の直進時の針路保持と、旋回時のポッドプロペラ３および各フィン８，15による旋回モーメントの発生とが適切に行われるようになる。
【００２８】
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。
【００２９】
次に本発明の第２実施形態について説明すると、図５は図３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３と同じ符号は同様の部材を示している。
【００３０】
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、第１の針路安定用フィン８が固着されている。
【００３１】
この第２実施形態では、ポッドプロペラ３の本体下部に軸受13を介して支持され第２の針路安定用フィンとしての下部フィン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。
【００３２】
上述のように、この第２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。
【００３３】
次に、図６〜８に示す本発明の第３実施形態では、前述の第１実施形態や第２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。
【００３４】
上述の第３実施形態では前述の図２に示す第１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。
【００３５】
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、翼板 22の後縁部に設けられた補助翼22 ａ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。
【００３６】
【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した船舶の直進航行時には、船尾のポッドプロペラと船底下面との間に配設された第１の針路安定用フィンおよび上記ポッドプロペラの下方に設けられた第２の針路安定用フィンの各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、上記第１の針路安定用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、上記第１の針路安定用フィンと上記第２の針路安定用フィンとは個別に回動制御されるので、両フィンの協働作用で、船体の直進時の針路保持と、船体の旋回時の各フィンによる旋回モーメントの発生と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】 本発明の実施形態に至る予備的な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２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３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 第１の針路安定用フィン
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
16 ａ 固定翼
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]
BACKGROUND OF THE INVENTION
The present invention relates to a ship provided with a pod propeller at the stern part, and more particularly, to a ship provided with a course stabilizer in the vicinity of the pod propeller.
[0002]
[Prior art]
In order to improve the course stability when going straight when a ship with a pod propeller that can be swung down from the rear part of the stern part is underwater in a ship inclined so that the bottom bottom of the stern part rises gently toward the stern end Conventionally, a skeg is provided on the stern part, or fins are fixed to the upper part 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 deteriorated 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 However, since it rotates while being integrated with the pod propeller, there is a problem that the efficient turning performance of the hull cannot be maintained.
[0004]
Therefore, the present invention provides a stern pod propeller with fins as a course stabilizer on the upper and lower sides of the pod propeller so that sufficient course stability can be maintained , and the rotation of the upper and lower fins is the rotation of the pod propeller. separately, moreover by to be able to control individually the turning of each fin, to provide a course stabilizer with a ship which is adapted attained the upper direction of improving the turning performance of the course stability of the hull Let it be an issue.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a ship with a course stabilizer according to the present invention is suspended from the rear part of the stern part into the water in a ship inclined so that the bottom bottom surface of the stern part gently rises toward the stern end. And a pod propeller mounted at the lower end of the vertical shaft, and is arranged so as to surround the vertical shaft and can be controlled to rotate independently of the vertical shaft. An outer shaft, a first course stabilizing fin fixed to the outer shaft and disposed between the pod propeller and the bottom surface of the ship bottom, and a lower portion of the main body of the pod propeller are supported so as to be rotatable. A lower vertical axis and a second course stabilization fin mounted on the lower vertical axis are provided, and the first course stabilization fin and the second course stabilization fin are individually controlled to rotate. It is characterized in that a control system is provided .
[0006]
Furthermore, course stabilizer with a ship of the present invention, the rotary control means of the upper Symbol lower vertical axis, and a moving blade which projects laterally from the lower vertical axis, and the lower vertical axis so as to surround the Dodotsubasa A cylindrical casing for oil chamber formation provided concentrically and fixed to the lower part of the main body of the pod propeller, a fixed wing projecting inward from the inner wall of the casing, and the moving blade and the fixed wing in the casing And a hydraulic control system for supplying and discharging hydraulic oil to and from an oil chamber formed between the two.
[0007]
In the ship with the course stabilizing device of the present invention described above, the first course stabilizing fin disposed between the pod propeller and the bottom surface of the bottom of the ship and the lower portion of the main body of the pod propeller are disposed when the ship goes straight ahead . By individually controlling the rotation of the second course stabilizing fin , the course holding is appropriately performed while corresponding to the different flow states above and below the pod propeller .
[0008]
On the other hand, while turning the pod propeller sufficiently at the time of turning of the ship, the turning angle of the first and second fins is moderately controlled moderately, and the horizontal direction generated by the fins is controlled. The lifting force facilitates the turning of the ship efficiently, and thereby a sufficient turning performance can be obtained.
[0009]
Since the rotation axis of the first fin is arranged as a cylindrical outer shaft that surrounds the vertical axis of the pod propeller, the rotation control can be easily performed using an electric drive control mechanism in the ship. To be done .
[0010]
Although as the rotation control means of the lower vertical axis as a rotation axis of the upper Symbol second course stabilizing fins are considered various mechanisms, projecting from the said lower vertical axis as before mentioned A plurality of oil chambers are formed between the moving blade and the fixed blade protruding inward from the inner wall of the cylindrical casing for forming the oil chamber surrounding the moving blade, and supply and discharge of hydraulic oil to the oil chamber When the hydraulic control system for performing the above is provided, the rotation control of the second course stabilizing fin is accurately performed with a simple structure.
[0011]
Further, in the ship with a course stabilizer according to the present invention, the rotation control means for the lower vertical shaft is interposed between the rotation shaft of the propeller driving motor provided in the main body of the pod propeller and the lower vertical shaft. It is characterized by comprising a remotely controlled forward / reverse switching clutch and a reduction gear mechanism.
[0012]
As described above, the rotation control means of the lower vertical shaft as the rotation shaft of the second course stabilizing fin is the rotation shaft of the propeller driving motor provided inside the main body of the pod propeller and the lower vertical shaft. When a forward / reverse switching clutch and a reduction gear mechanism that can be controlled remotely are provided, the second course stabilization can be achieved without the need for new power generation means by appropriate use of the electric motor. The turning control of the working fin in the required direction can be easily performed.
[0013]
Furthermore, the ship with the course stabilization device of the present invention is characterized in that a wing plate extending substantially horizontally from the fin to the left and right is provided at the lower end of the second course stabilization fin.
[0014]
In the ship with the course stabilization device described above, the horizontal lift generated by the second course stabilization fin is increased by the blades extending substantially horizontally from the lower end of the second course stabilization fin to the left and right. In addition to improving the turning performance of the hull, it is possible to further improve the course stability of the hull by increasing the turning resistance due to the blades when the hull is traveling straight.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, when describing the embodiments of the present invention with reference to the drawings, FIG. 1 is a stern side view illustrating a preliminary course stabilizer with vessels leading to the implementation of the invention, 2-4 of the present invention the FIG. 2 is a side view of the stern part of the ship with a course stabilizer as one embodiment, FIG. 3 is a side view of the main part of FIG. 2 cut away, and FIG. -A is a sectional view taken along arrow A, FIG. 5 is a side view showing a main part of a ship with a course stabilizer as a second embodiment of the present invention corresponding to FIG. 3, and FIGS. 6 shows a ship with a course stabilizer as a third embodiment, FIG. 6 is a side view of the stern part thereof, FIG. 7 is an enlarged sectional view taken along arrow BB in FIG. 6, and FIG. 8 is a CC line in FIG. FIG.
[0016]
First, to describe the preliminary course stabilizer with vessels leading to the implementation of the invention, as shown in FIG. 1, the ship bottom underside 1 of the stern portion is inclined so as to gradually rise toward the aft end buttocks In a ship having a hull form, a cylindrical vertical shaft 2 suspended underwater from the rear portion of the stern portion is provided so as to be supported by a bearing (not shown), and a pod propeller 3 is provided at the lower end of the vertical shaft 2. Is installed.
[0017]
A gear set including a worm wheel 4 and a worm 5 is attached to the upper end portion of the vertical shaft 2, and the rotation control of the vertical shaft 2 by the electric motor 6 and a control system (not shown) is performed via the gear set. Yes.
[0018]
In addition, a propeller driving motor (not shown) is installed inside the main body of the pod propeller 3, and power is supplied to the motor by a power supply line passing through the inside of the cylindrical vertical shaft 2 from the power source in the ship. Is called.
[0019]
Further, a cylindrical outer shaft 7 is provided so as to surround the vertical shaft 2, and a course stabilization fin 8 fixed to the outer shaft 7 is disposed between the pod propeller 3 and the bottom surface 1 of the ship bottom. The rotation control of the fin 8 is performed by the electric motor 11 and a control system (not shown) through a gear set including a worm wheel 9 and a worm 10 mounted on the upper end portion of the outer shaft 7.
In this way, the rotation control of the fin 8 is performed separately from the rotation control of the pod propeller 3 .
[0020]
Next, a ship with a course stabilizer as a first embodiment of the present invention will be described. As shown in FIGS. 2 and 3, the first embodiment is the same as the preliminary one shown in FIG. In addition, in a ship having a buttocks hull shape so that the bottom bottom surface 1 of the stern part gently rises toward the stern end, a cylindrical vertical shaft 2 suspended from the rear part of the stern part into the water is a bearing (not shown). The pod propeller 3 is attached to the lower end of the vertical shaft 2.
[0021]
A gear set such as a worm wheel and a worm similar to that shown in FIG. 1 is attached to the upper end of the vertical shaft 2 so that the rotation of the vertical shaft 2 is controlled by the electric motor and the control system via the gear set. It has become.
[0022]
Further, as shown in FIG. 3, an electric motor 3b for driving the rear propeller 3a is installed inside the main body of the pod propeller 3, and power is supplied to the electric motor 3b from a power source in the ship in a cylindrical shape. This is performed by a feed line 12 passing through the inside of the vertical axis 2.
[0023]
Further, a cylindrical outer shaft 7 is provided so as to surround the vertical shaft 2, and a first course stabilization fin 8 fixed to the outer shaft 7 is disposed between the pod propeller 3 and the bottom surface 1 of the ship bottom. The rotation control of the fin 8 is performed in the same manner as shown in FIG. 1 by a drive mechanism and a control system (not shown) mounted on the upper end portion of the outer shaft 7.
[0024]
In the first embodiment, in particular, a lower vertical shaft 14 supported via a bearing 13 is provided at the lower portion of the main body of the pod propeller 3 so as to be capable of rotation control. Lower fins 15 are provided as fins.
[0025]
Then, as shown in FIGS. 3 and 4, the rotation control means for the lower vertical shaft 14 is configured so as to surround the moving blade 14a and the moving blade 14a projecting laterally from the lower vertical shaft 14. And an oil chamber forming cylindrical casing 16 that is concentrically provided and fixed to the lower part of the main body of the pod propeller 3, and a fixed wing 16a that protrudes inward from the inner wall of the casing 16, The supply and discharge of the hydraulic oil to and from the oil chambers 17a to 17d partitioned by the moving blade 14a and the fixed blade 16a in the casing 16 are performed through the oil holes 18a to 18d. Fifteen rotation controls are performed.
[0026]
That is, if the hydraulic oil is supplied to and discharged from the oil chambers 17a to 17d in FIG. 4 as shown by the arrows, the lower vertical shaft 14 can be rotated in the R direction. 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.
[0027]
In this way, in this first embodiment, the pod propeller 3, a first course stabilizing fin 8, and the lower fin 15 of the second course stabilizing fins are respectively separately rotated controlled which is configured as a heading hold during straight hull by a course stabilizing fins 8 and the lower fin 15 cooperative operation, the occurrence of the turning moment by pod propeller 3 and the fins 8 and 15 in cornering Will be done appropriately.
[0028]
As the rotation control means of the lower vertical shaft 14 as the 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. The oil chambers 17a to 17d are formed between the fixed blades 16a projecting inward from the inner wall of the cylinder, 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.
[0029]
Next will be described a second embodiment of the present invention, Figure 5 in correspondence with FIG. 3 shows a main part of the course stabilizer with a ship of the present embodiment, the same reference numerals as in FIG. 3 in FIG. 5 a similar The member is shown.
[0030]
That is, in a ship inclined so that the bottom bottom surface of the stern portion gradually rises toward the stern end, the pod propeller is placed on the lower end of the cylindrical vertical shaft 2 that can be swung from the rear portion of the stern portion into the water. 3 is fixed, and a first course stabilizing 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 independently of the vertical shaft 2. Yes.
[0031]
In this second embodiment, a lower vertical shaft 14 supported by a lower body of the pod propeller 3 via a bearing 13 and fitted with a lower fin 15 as a second course stabilizing fin is provided inside the main body of the pod propeller 3. A forward / reverse switching clutch 20 that can be remotely controlled via a control line 19 between the rotating shaft of the electric motor 3b and the lower vertical shaft 14 and is rotated by a propeller driving motor 3b. A reduction gear mechanism 21 is interposed.
In the final stage of the reduction gear mechanism 21, a gear set including a worm 21a and a worm wheel 21b is disposed.
[0032]
As described above, in the second embodiment, the rotation control means of the lower vertical shaft 14 as the rotation shaft of the second course stabilizing fin (lower fin 15) is provided inside the main body of the pod propeller 3. Since the forward / reverse switching clutch 20 and the reduction gear mechanism 21 that can be remotely controlled are provided between the rotating shaft of the propeller driving motor 3b and the lower vertical shaft 14, the motor 3b can be newly used by appropriately using the motor 3b. Therefore, the rotation control of the lower fin 15 as the second course stabilizing fin in the required direction can be easily performed without requiring any power generation means.
[0033]
Next, in the third embodiment of the present invention shown in FIGS. 6 to 8, in a ship with a course stabilizer similar to the first embodiment and the second embodiment described above, the lower fin 15 is substantially horizontally moved from the bottom to the left and right. An overhanging wing plate 22 is provided, and an auxiliary wing 22a capable of rotation control is provided at the rear edge of the wing plate 22, and the left and right ends of the wing plate 22 are warped sideways. A raised stabilizing blade 22b is provided.
6 and 7, the same reference numerals as those in the above-described embodiments indicate similar members.
[0034]
In the third embodiment described above, the same effects as those of the first embodiment shown in FIG. 2 are obtained, and the lift of the lower fin 15 is increased by the action of the blade 22 provided at the lower end of the lower fin 15. Thus, the effect of improving the turning performance of the hull can be obtained.
[0035]
In addition, the presence of the lower fin 15 brings about an increase in turning resistance, and accordingly, there is also an advantage that the course stability of the hull is further improved.
Then, by controlling on the basis of a detection signal of the rotation of the aileron 22 a provided in the rear edge of the blade plate 22 from pitching sensor (not shown) mounted on the hull, effect obtained to reduce the pitching of the ship Be able to.
[0036]
【The invention's effect】
As described in detail above, according to the ship with a course stabilizer of the present invention, the following effects can be obtained.
(1) At the time of straight traveling of the marine vessel as ship bottom underside of the stern portion is gradually increased toward the stern end, the first course stabilizing fins and disposed between the stern of the pod propeller and the ship bottom underside heading held by each operation of the second course stabilizing fins provided beneath the pod propeller is performed accurately. On the other hand, while turning the pod propeller sufficiently during turning of the ship, the turning angle of the fin is moderately controlled moderately, and the horizontal lift generated by the fin makes the turning of the ship efficient. It will be well encouraged, and this will provide sufficient turning performance. Since the rotation axis of the first course stabilizing fin is arranged as a cylindrical outer shaft that surrounds the vertical axis of the pod propeller, the rotation control is performed using an electric drive control mechanism in the ship. To be done easily.
(2) A second course stabilization fin is provided on a lower vertical shaft supported by the lower part of the main body of the pod propeller so as to be able to rotate , and the first course stabilization fin and the second course stabilization fin are provided . since the individually pivoting control the fins, with the cooperative action of both Fi down, so that the holding course during straight hull, and the occurrence of the turning moment due to the fins during turning of the hull can be appropriately performed Become.
(3) A plurality of oil chambers are formed between the moving blade protruding from the lower vertical shaft and the fixed blade protruding inward from the inner wall of the cylindrical casing for forming the oil chamber surrounding the moving blade. Thus, when a hydraulic control system that supplies and discharges hydraulic oil to and from the oil chamber is provided, the rotation control of the second course stabilizing fin is accurately performed with a simple structure.
(4) The rotation control means of the lower vertical shaft as the rotation shaft of the second course stabilizing fin is provided between the rotation shaft of the propeller driving motor provided in the main body of the pod propeller and the lower vertical shaft. In the case where a forward / reverse switching clutch and a reduction gear mechanism that can be remotely controlled are provided between the two, the second course stabilizing fin without the need for new power generation means by appropriate use of the electric motor. Rotation control in the required direction is easily performed.
(5) The horizontal lift generated by the second course stabilization fin is increased by the blades extending horizontally from the lower end of the second course stabilization fin to the left and right to increase the turning performance of the hull. In addition, the course stability of the hull can be further improved by increasing the turning resistance due to the blades when the hull is traveling straight.
[Brief description of the drawings]
1 is a stern side view illustrating a preliminary course stabilizer with vessels leading to the implementation of the invention.
FIG. 2 is a side view of the stern part showing a ship with a course stabilizer as a first embodiment of the present invention.
FIG. 3 is a side view showing an enlarged main part of FIG.
4 is a cross-sectional view taken along the line AA in FIG. 3;
FIG. 5 is a side view showing a main part of a ship with a course stabilizing device as a second embodiment of the present invention in a cutaway manner corresponding to FIG. 3;
FIG. 6 is a side view of a stern part of a ship with a course stabilizer as a third embodiment of the present invention.
7 is an enlarged cross-sectional view taken along the line BB in FIG. 6;
8 is a cross-sectional view taken along the line CC of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stern bottom bottom 2 Vertical axis 3 Pod propeller 3a Propeller 3b Electric motor 4 Worm wheel 5 Worm 6 Electric motor 7 Cylindrical outer shaft 8 First course stabilization fin 9 Worm wheel
10 Warm
11 Electric motor
12 Power supply line
13 Bearing
14 Lower vertical axis
14a Rotor blade
15 Second course stabilization fin (lower fin)
16 Cylindrical casing for forming oil chamber
16 a fixed wing
17a-17d Oil chamber
18 Oil pipe
18a-18d Oil hole
19a-19d Control line
20 Clutch
21 Reduction gear mechanism
21a Warm
21b Worm wheel
22 vanes
22a Aileron
22b Stabilized wing

Claims (4)

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第１の針路安定用フィンと、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と、同下部鉛直軸に装着された第２の針路安定用フィンとが設けられて、上記第１の針路安定用フィンと上記第２の針路安定用フィンとを個別に回動制御する制御系が設けられたことを特徴とする、針路安定装置付き船舶。In a vessel that is tilted so that the bottom bottom of the stern rises gently toward the stern end, it is attached to the vertical axis that can be pivoted and suspended from the rear of the stern to the bottom, and the lower end of the vertical axis. A cylindrical outer shaft that is disposed so as to surround the vertical shaft and can be controlled to rotate separately from the vertical shaft, and the pod propeller and the bottom surface of the bottom of the ship fixed to the outer shaft. A first course stabilizing fin disposed between the lower pod propeller, a lower vertical shaft supported on the lower portion of the pod propeller so as to be capable of rotation control, and a second course stabilization mounted on the lower vertical shaft. A ship with a course stabilization device, characterized in that a control system is provided for controlling the rotation of the first course stabilization fin and the second course stabilization fin individually. . 請求項１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。The ship with a course stabilizer according to claim 1 , wherein the lower vertical axis rotation control means includes a moving blade projecting laterally from the lower vertical axis, and the lower vertical shaft so as to surround the moving blade. A cylindrical casing for oil chamber formation provided concentrically and fixed to the lower part of the main body of the pod propeller, a fixed wing projecting inward from the inner wall of the casing, and the moving blade and the fixed wing in the casing And a hydraulic control system that supplies and discharges hydraulic oil to and from an oil chamber formed between the two 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。2. The ship with a course stabilizer according to claim 1 , wherein the rotation control means for the lower vertical shaft is provided between a rotation shaft of a propeller driving motor provided in the main body of the pod propeller and the lower vertical shaft. A marine vessel with a course stabilizing device, characterized in that it is composed of an intervening remotely controllable forward / reverse switching clutch and a reduction gear mechanism. 請求項１〜３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。The ship with a course stabilization device according to any one of claims 1 to 3 , wherein a wing plate extending substantially horizontally from the fin to the left and right is provided at a lower end portion of the second course stabilization fin. A ship with a course stabilizer.
JP2002303254A 2002-10-17 2002-10-17 Ship with course stabilizer Expired - Lifetime JP3937013B2 (en)

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