JPWO2014033949A1 - Airboat attitude recovery device - Google Patents

Airboat attitude recovery device Download PDF

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JPWO2014033949A1
JPWO2014033949A1 JP2014532712A JP2014532712A JPWO2014033949A1 JP WO2014033949 A1 JPWO2014033949 A1 JP WO2014033949A1 JP 2014532712 A JP2014532712 A JP 2014532712A JP 2014532712 A JP2014532712 A JP 2014532712A JP WO2014033949 A1 JPWO2014033949 A1 JP WO2014033949A1
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hull
floating body
posture
rotation angle
width direction
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甲 佐々木
甲 佐々木
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甲 佐々木
甲 佐々木
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C7/00—Salvaging of disabled, stranded, or sunken vessels; Salvaging of vessel parts or furnishings, e.g. of safes; Salvaging of other underwater objects
    • B63C7/003—Righting capsized vessels, e.g. sailing vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H7/00—Propulsion directly actuated on air
    • B63H7/02—Propulsion directly actuated on air using propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/02—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking
    • B63B43/10—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy
    • B63B43/14—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy using outboard floating members
    • B63B2043/145—Improving safety of vessels, e.g. damage control, not otherwise provided for reducing risk of capsizing or sinking by improving buoyancy using outboard floating members pneumatic, e.g. inflatable on demand

Abstract

この発明は、転覆姿勢の船体が転覆限界傾度以下の回転角度となって正常姿勢に復元するまで、船体に復元方向の力を継続して作用させることができ、船体を正常姿勢に確実に復元することができるエアボートの姿勢復元装置を実現することを目的とする。この発明は、船体の後部上方に搭載したエンジンに推進用のプロペラを取り付けたエアボートの姿勢復元装置において、前記プロペラを覆うプロペラガードに膨縮可能な浮体を設置し、転覆姿勢の前記船体に正常姿勢に近づける復元方向の力を作用させるように前記浮体の膨縮状態及び設置状態の少なくとも一方を制御する制御手段を備えたことを特徴とする。This invention allows the hull in a rollover posture to continuously act on the hull until the rotation angle is equal to or less than the rollover limit inclination and restores to the normal posture, so that the hull is reliably restored to the normal posture. It is an object of the present invention to realize an air boat attitude restoration device that can perform the above. This invention relates to an attitude restoration device for an air boat in which a propeller for propulsion is attached to an engine mounted on the rear upper part of a hull. It is characterized by comprising control means for controlling at least one of the expansion / contraction state and the installation state of the floating body so as to apply a force in the restoring direction approaching the posture.

Description

この発明はエアボートの姿勢復元装置に係り、特に、転覆した船体を正常の姿勢に復元することができるエアボートの姿勢復元装置に関するものである。   The present invention relates to an attitude restoration apparatus for an air boat, and more particularly to an attitude restoration apparatus for an air boat that can restore an overturned hull to a normal attitude.

小型の船艇には、船底が平坦な船体の後部上方にエンジンを搭載し、このエンジンに推進力を発生するプロペラを取り付けたエアボートがある。エアボートは、推進に空中のプロペラを用いることから空中プロペラ船とも呼ばれ、船底にスクリューや舵などの突起物が無いため、水深の浅い湿地や沼沢地での使用に適している。
エアボートは、船体の後部上方に重量の大きいエンジンを搭載していることから、重心が高く、船底が平坦で喫水も浅いことから、転覆限界角度が小さい。このような転覆限界角度の小さいエアボート等の船艇は、転覆限界角度を超えて回転した時に船体を正常姿勢に戻すことが困難なため、船体を正常姿勢に復元する姿勢復元装置が提案されている。
従来の船艇の姿勢復元装置には、船体の重心よりも上方に位置させて膨縮可能な浮体を設置し、船体が転覆限界角度を越えて回転した時に圧力気体を浮体に送り込んで膨張させ、浮体の浮力を船体に作用させて船体を正常姿勢に復元するものがある。（特開平５−１４２３８１号公報）Small boats include an air boat in which an engine is mounted on the rear upper part of a hull with a flat bottom and a propeller that generates propulsion is attached to the engine. An air boat is also called an air propeller ship because it uses a propeller in the air for propulsion, and it is suitable for use in shallow wetlands and swamps because there are no protrusions such as screws and rudder on the bottom of the ship.
Since an air boat is equipped with a heavy engine at the rear upper part of the hull, the center of gravity is high, the bottom of the ship is flat, and the draft is shallow, so the rollover limit angle is small. Since such boats such as air boats with a small capsize limit angle are difficult to return the hull to a normal posture when rotated beyond the capsize limit angle, a posture restoration device that restores the hull to a normal posture has been proposed. Yes.
In the conventional ship attitude restoration device, a floating body that can be expanded and contracted is located above the center of gravity of the hull, and when the hull rotates beyond the capsize limit angle, pressure gas is sent to the floating body to expand it. In some cases, the buoyancy of the floating body is applied to the hull to restore the hull to a normal posture. (Japanese Patent Laid-Open No. 5-1432381)

特開平５−１４２３８１号公報JP-A-5-142381

ところで、従来の姿勢復元装置は、転覆姿勢の船体に水中に没した浮体の浮力を作用させ、船体に正常姿勢に近づける復元方向の力を作用させている。しかし、浮体は、水中に没した状態から浮上し水面に到達すると、水面から空中に上昇することなく水面に止まるため、もはや船体に正常姿勢に近づける復元方向の力を作用させることができなくなる。
このため、従来の姿勢復元装置は、転覆姿勢の船体が転覆限界角度以下となって正常姿勢に復元するまで、船体に復元方向の力を継続して作用させることができず、船体を正常姿勢に確実に復元することができない問題があった。By the way, the conventional posture restoring device applies a buoyancy of a floating body immersed in water to a hull in an overturned posture and a force in a restoring direction to bring the hull close to a normal posture. However, when the floating body rises from the state of being submerged in water and reaches the water surface, the floating body stops on the water surface without rising from the water surface into the air, so that it is no longer possible to apply a restoring force that brings the hull closer to the normal posture.
For this reason, the conventional posture restoration device cannot continuously apply the force in the restoration direction to the hull until the hull in the rollover posture is restored to the normal posture with the rollover limit angle or less. There was a problem that could not be restored reliably.

この発明は、転覆姿勢の船体が転覆限界傾度以下の回転角度となって正常姿勢に復元するまで、船体に復元方向の力を継続して作用させることができ、船体を正常姿勢に確実に復元することができるエアボートの姿勢復元装置を実現することを目的とする。   This invention allows the hull in a rollover posture to continuously act on the hull until the rotation angle is equal to or less than the rollover limit inclination and restores to the normal posture, so that the hull is reliably restored to the normal posture. It is an object of the present invention to realize an air boat attitude restoration device that can perform the above.

この発明は、船体の後部上方に搭載したエンジンに推進用のプロペラを取り付けたエアボートの姿勢復元装置において、前記プロペラを覆うプロペラガードに膨縮可能な浮体を設置し、転覆姿勢の前記船体に正常姿勢に近づける復元方向の力を作用させるように前記浮体の膨縮状態及び設置状態の少なくとも一方を制御する制御手段を備えたことを特徴とする。   This invention relates to an attitude restoration device for an air boat in which a propeller for propulsion is attached to an engine mounted on the rear upper part of a hull, and a floating body that can be expanded and contracted is installed on a propeller guard that covers the propeller, so that the hull in an overturning posture is normal. It is characterized by comprising control means for controlling at least one of the expansion / contraction state and the installation state of the floating body so as to apply a force in the restoring direction approaching the posture.

この発明は、転覆姿勢の船体に正常姿勢に近づける復元方向の力を作用させるように浮体の膨縮状態及び設置状態の少なくとも一方を制御することで、船体に復元方向の力を継続して作用させることができ、船体を正常の姿勢に確実に復元することができる。   According to the present invention, the force in the restoring direction is continuously applied to the hull by controlling at least one of the expansion / contraction state and the installation state of the floating body so as to apply the restoring direction force close to the normal posture to the overturned hull. And the hull can be reliably restored to a normal posture.

図１はエアボートの背面図である。（実施例１）FIG. 1 is a rear view of the air boat. Example 1 図２はエアボートの平面図である。（実施例１）FIG. 2 is a plan view of the air boat. Example 1 図３はエアボートの側面図である。（実施例１）FIG. 3 is a side view of the air boat. Example 1 図４は姿勢復元装置のシステム構成図である。（実施例１）FIG. 4 is a system configuration diagram of the posture restoration apparatus. Example 1 図５は正常姿勢のエアボートの背面図である。（実施例１）FIG. 5 is a rear view of the air boat in a normal posture. Example 1 図６は転覆限界角度以下に回転した状態のエアボートの背面図である。（実施例１）FIG. 6 is a rear view of the air boat in a state where the air boat is rotated below the rollover limit angle. Example 1 図７は転覆限界角度に回転した状態のエアボートの背面図である。（実施例１）FIG. 7 is a rear view of the air boat in a state rotated to the rollover limit angle. Example 1 図８は転覆限界角度を越えて回転し一側浮体が膨張を開始した状態のエアボートの背面図である。（実施例１）FIG. 8 is a rear view of the air boat in a state in which the one side floating body has started to expand by rotating beyond the rollover limit angle. Example 1 図９は９０度回転した状態のエアボートの背面図である。（実施例１）FIG. 9 is a rear view of the air boat rotated 90 degrees. Example 1 図１０は１８０度回転した転覆姿勢のエアボートの背面図である。（実施例１）FIG. 10 is a rear view of the overturned air boat rotated 180 degrees. Example 1 図１１は一側浮体の膨張が完了し復元方向に回転を開始した状態のエアボートの背面図である。（実施例１）FIG. 11 is a rear view of the air boat in a state where the expansion of the one-side floating body is completed and the rotation in the restoring direction is started. Example 1 図１２は一側浮体が水面に到達し他側浮体が膨張を開始した状態のエアボートの背面図である。（実施例１）FIG. 12 is a rear view of the air boat in a state where the one side floating body reaches the water surface and the other side floating body starts to expand. Example 1 図１３は他側浮体が水面に到達した状態のエアボートの背面図である。（実施例１）FIG. 13 is a rear view of the air boat in a state where the other side floating body has reached the water surface. Example 1 図１４はアームが離間する方向に回転を開始した状態のエアボートの背面図である。（実施例１）FIG. 14 is a rear view of the air boat in a state where the rotation is started in the direction in which the arms are separated from each other. Example 1 図１５は転覆限界角度に復元した状態のエアボートの背面図である。（実施例１）FIG. 15 is a rear view of the air boat in a state restored to the capsize limit angle. Example 1 図１６は転覆限界角度以下に復元した状態のエアボートの背面図である。（実施例１）FIG. 16 is a rear view of the air boat in a state where the air boat is restored to a rollover limit angle or less. Example 1 図１７は正常姿勢に復元したエアボートの背面図である。（実施例１）FIG. 17 is a rear view of the air boat restored to a normal posture. Example 1 図１８は他側浮体を収縮させた正常姿勢のエアボートの背面図である。（実施例１）FIG. 18 is a rear view of the air boat in a normal posture in which the other side floating body is contracted. Example 1 図１９はエアボートの背面図である。（実施例２）FIG. 19 is a rear view of the air boat. (Example 2) 図２０は姿勢復元装置のシステム構成図である。（実施例２）FIG. 20 is a system configuration diagram of the posture restoration apparatus. (Example 2) 図２１は正常姿勢のエアボートの背面図である。（実施例２）FIG. 21 is a rear view of the air boat in a normal posture. (Example 2) 図２２は転覆限界角度を越えて回転し一側浮体が膨張を開始した状態のエアボートの背面図である。（実施例２）FIG. 22 is a rear view of the air boat in a state in which the one-side floating body has started to expand by rotating beyond the rollover limit angle. (Example 2) 図２３は１８０度回転した転覆姿勢のエアボートの背面図である。（実施例２）FIG. 23 is a rear view of the airboat in an overturned posture rotated 180 degrees. (Example 2) 図２４は一側浮体が水面に到達し他側浮体が膨張を開始した状態のエアボートの背面図である。（実施例２）FIG. 24 is a rear view of the air boat in a state where the one side floating body reaches the water surface and the other side floating body starts to expand. (Example 2) 図２５は他側浮体の膨張で復元方向に回転を継続した状態のエアボートの背面図である。（実施例２）FIG. 25 is a rear view of the air boat in a state where the rotation in the restoring direction is continued by the expansion of the other side floating body. (Example 2) 図２５は転覆限界角度以下に復元した状態のエアボートの背面図である。（実施例２）FIG. 25 is a rear view of the air boat in a state where the air boat is restored to a rollover limit angle or less. (Example 2) 図２７は正常姿勢に復元したエアボートの背面図である。（実施例２）FIG. 27 is a rear view of the air boat restored to a normal posture. (Example 2) 図２８はエアボートの背面図である。（実施例３）FIG. 28 is a rear view of the air boat. (Example 3) 図２９は姿勢復元装置のシステム構成図である。（実施例３）FIG. 29 is a system configuration diagram of the posture restoration apparatus. (Example 3) 図３０は正常姿勢のエアボートの背面図である。（実施例３）FIG. 30 is a rear view of the air boat in a normal posture. (Example 3) 図３１は転覆限界角度を越えて回転し一側浮体が膨張を開始した状態のエアボートの背面図である。（実施例３）FIG. 31 is a rear view of the air boat in a state in which the one side floating body has started to expand by rotating beyond the rollover limit angle. (Example 3) 図３２は１８０度回転した転覆姿勢のエアボートの背面図である。（実施例３）FIG. 32 is a rear view of the airboat in an overturned posture rotated 180 degrees. (Example 3) 図３３は一側浮体が水面に到達し第１他側浮体が膨張を開始した状態のエアボートの背面図である。（実施例３）FIG. 33 is a rear view of the air boat in a state where the one-side floating body reaches the water surface and the first other-side floating body starts to expand. (Example 3) 図３４は第１〜第４他側浮体の膨張で復元方向に回転を継続した状態のエアボートの背面図である。（実施例３）FIG. 34 is a rear view of the air boat in a state where the rotation in the restoring direction is continued by the expansion of the first to fourth other-side floating bodies. (Example 3) 図３５は転覆限界角度以下に復元した状態のエアボートの背面図である。（実施例３）FIG. 35 is a rear view of the air boat in a state where the air boat is restored to a rollover limit angle or less. (Example 3) 図３６は正常姿勢に復元したエアボートの背面図である。（実施例３）FIG. 36 is a rear view of the air boat restored to a normal posture. (Example 3) 図３７はエアボートの背面図である。（実施例４）FIG. 37 is a rear view of the air boat. Example 4 図３８は図３７のＥ−Ｅ線による外周部材部分の拡大断面図である。（実施例４）38 is an enlarged cross-sectional view of the outer peripheral member portion taken along line EE of FIG. Example 4 図３９は姿勢復元装置のシステム構成図である。（実施例４）FIG. 39 is a system configuration diagram of the posture restoration apparatus. Example 4 図４０は正常姿勢のエアボートの背面図である。（実施例４）FIG. 40 is a rear view of the air boat in a normal posture. Example 4 図４１は転覆限界角度を越えて回転し移動浮体が膨張を開始した状態のエアボートの背面図である。（実施例３）FIG. 41 is a rear view of the air boat in a state in which the movable floating body has started to expand by rotating beyond the rollover limit angle. (Example 3) 図４２は１８０度回転した転覆姿勢のエアボートの背面図である。（実施例４）FIG. 42 is a rear view of the airboat in an overturned posture rotated 180 degrees. Example 4 図４３は移動浮体が水面に到達した状態のエアボートの背面図である。（実施例４）FIG. 43 is a rear view of the air boat in a state where the movable floating body has reached the water surface. Example 4 図４４は移動浮体の移動で復元方向に回転を継続した状態のエアボートの背面図である。（実施例４）FIG. 44 is a rear view of the air boat in a state where rotation in the restoring direction is continued by movement of the movable floating body. Example 4 図４５は移動浮体の移動で転覆限界角度以下に復元した状態のエアボートの背面図である。（実施例４）FIG. 45 is a rear view of the air boat in a state where the moving floating body is restored to a rollover limit angle or less by moving the movable floating body. Example 4 図４６は正常姿勢に復元したエアボートの背面図である。（実施例４）FIG. 46 is a rear view of the air boat restored to the normal posture. Example 4

以下図面に基づいて、この発明の実施例を説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１〜図１８は、この発明の実施例１を示すものである。図１〜図３において、エアボート１は、船底が平坦な幅方向よりも前後方向に長い四角板形状の船体２を備え、船体２の後部上面にフレーム３を設置している。フレーム３は、船体幅方向に延びる横部材４と船体前後方向に延びる縦部材５とにより枠状に形成されている。フレーム３の略中央には、支持台６を設置している。支持台６の上部には、エンジン７を搭載している。このエンジン６には、船体２の後方に向けて空気を押して推進力を発生するプロペラ８を取り付けている。
前記フレーム３には、プロペラ８を覆うプロペラガード９を取り付けている。プロペラガード９は、プロペラ８の回転軌跡を覆うように逆Ｕ字形状に上方に湾曲突出する一対の外周部材１０を備えている。一対の外周部材１０は、船体幅方向一側において、下部から中間までの一側直線部分１１Ａと、直線部分１１Ａの先端から頂部までの一側曲線部分１１Ｂとから構成され、一方、船体幅方向他側において、下部から中間までの他側直線部分１２Ａと、直線部分１２Ａの先端から頂部までの他側曲線部分１２Ｂとから構成される。
一対の外周部材１０は、プロペラ８を前後から挟むように平行に配置され、複数の連結部材１３で相互に連結している。また、一対の外周部材１０は、エンジン７を覆うように後側に延びる複数の支持部材１４でフレーム３に連結している。プロペラガード９は、外周部材１０、連結部材１３、支持部材１４に、エンジン７及びプロペラ８を覆うように網状のガードフェンス１５を取り付けている。
前記エンジン７の前側には、フレーム３に燃料タンク１６を搭載し、燃料タンク１６の上部にシート１７を設置している。前記プロペラガード９の後部には、２枚のラダー１８を回動可能に取り付けている。２枚のラダー１８は、ラダーリンク１９で連絡され、連動する。船体幅方向他側のラダー１８には、アイドラーアーム２０を取り付けている。アイドラーアーム２０には、リンケージ２１の一端側を連絡している。リンケージ２１の他端側は、エンジン７の船体幅方向他側を通して前方に延ばし、ラダースティック２２に連絡している。ラダースティック２２は、エンジン７の前側に設置した前記シート１７の船体幅方向他側に設置している。
前記エアボート１は、燃料タンク１６の燃料によりエンジン７を駆動し、プロペラ８を回転させて航走する。エアボート１は、シート１７の船体幅方向他側に設置したラダースティック２２を操作することで、２枚のラダー１８を操舵して進行方向を調整する。1 to 18 show Embodiment 1 of the present invention. 1 to 3, an air boat 1 includes a square plate-shaped hull 2 that is longer in the front-rear direction than the width direction in which the ship bottom is flat, and a frame 3 is installed on the rear upper surface of the hull 2. The frame 3 is formed in a frame shape by a horizontal member 4 extending in the hull width direction and a vertical member 5 extending in the hull longitudinal direction. A support base 6 is installed in the approximate center of the frame 3. An engine 7 is mounted on the upper portion of the support base 6. A propeller 8 that pushes air toward the rear of the hull 2 to generate thrust is attached to the engine 6.
A propeller guard 9 covering the propeller 8 is attached to the frame 3. The propeller guard 9 includes a pair of outer peripheral members 10 that protrude upwardly in an inverted U shape so as to cover the rotation trajectory of the propeller 8. The pair of outer peripheral members 10 is composed of a one-side straight portion 11A from the bottom to the middle and a one-side curved portion 11B from the tip to the top of the straight portion 11A on one side in the hull width direction. On the other side, the other side straight portion 12A from the bottom to the middle and the other side curved portion 12B from the tip to the top of the straight portion 12A are configured.
The pair of outer peripheral members 10 are arranged in parallel so as to sandwich the propeller 8 from the front and rear, and are connected to each other by a plurality of connecting members 13. The pair of outer peripheral members 10 are connected to the frame 3 by a plurality of support members 14 extending rearward so as to cover the engine 7. In the propeller guard 9, a net-like guard fence 15 is attached to the outer peripheral member 10, the connecting member 13, and the support member 14 so as to cover the engine 7 and the propeller 8.
On the front side of the engine 7, a fuel tank 16 is mounted on the frame 3, and a seat 17 is installed above the fuel tank 16. Two ladders 18 are rotatably attached to the rear part of the propeller guard 9. The two ladders 18 are connected via a ladder link 19 and linked. An idler arm 20 is attached to the ladder 18 on the other side in the width direction of the hull. One end side of the linkage 21 is connected to the idler arm 20. The other end side of the linkage 21 extends forward through the other side in the hull width direction of the engine 7 and communicates with the rudder stick 22. The rudder stick 22 is installed on the other side in the hull width direction of the seat 17 installed on the front side of the engine 7.
The air boat 1 is driven by driving the engine 7 with the fuel in the fuel tank 16 and rotating the propeller 8. The air boat 1 operates the rudder stick 22 installed on the other side in the hull width direction of the seat 17 to steer the two ladders 18 and adjust the traveling direction.

前記エアボート１は、転覆姿勢の船体２を復元方向Ｃに回転させて正常姿勢に復元するる姿勢復元装置２３を備えている。
ここで、正常姿勢とは、図７に示すように、垂直線Ｈに対して船体２の上下方向の中心線Ｓのなす回転角度θが「０」の状態である。転覆姿勢とは、図８に示すように、船体２が幅方向に回転した際に、船体２の回転角度θが転覆限界角度θｓを越えた状態である。復元方向Ｃとは、図１１〜図１６に示すように、垂直線Ｈに対して船体２の中心線Ｓのなす回転角度θが「０」に近づく方向である。これに対して、転覆方向Ｄとは、図６〜図１０に示すように、垂直線Ｈに対して船体２の回転角度θが「０」よりも大きくなる方向である。
このエアボート１は、船体２の回転角度θが転覆限界角度θ以下の場合、船自体の復元力で復元方向Ｃに回転し、正常姿勢に復元する。エアボート１は、船体２の回転角度θが転覆限界角度θを越えると、転覆方向Ｄに回転して転覆姿勢となる。なお、このエアボート１に搭載したエンジン７は、船体２の回転角度θが転覆限界角度θｓを越えると、自動停止する。The air boat 1 includes a posture restoring device 23 that rotates the hull 2 in the capsized posture in the restoring direction C to restore the normal posture.
Here, as shown in FIG. 7, the normal posture is a state in which the rotation angle θ formed by the vertical center line S with respect to the vertical line H is “0”. As shown in FIG. 8, the overturning posture is a state in which the rotation angle θ of the hull 2 exceeds the overturn limit angle θs when the hull 2 rotates in the width direction. The restoration direction C is a direction in which the rotation angle θ formed by the center line S of the hull 2 with respect to the vertical line H approaches “0” as shown in FIGS. On the other hand, the rollover direction D is a direction in which the rotation angle θ of the hull 2 is larger than “0” with respect to the vertical line H, as shown in FIGS.
When the rotation angle θ of the hull 2 is equal to or smaller than the capsize limit angle θ, the air boat 1 rotates in the restoring direction C by the restoring force of the ship itself and restores to a normal posture. When the rotation angle θ of the hull 2 exceeds the rollover limit angle θ, the air boat 1 rotates in the rollover direction D and assumes a rollover posture. The engine 7 mounted on the air boat 1 automatically stops when the rotation angle θ of the hull 2 exceeds the rollover limit angle θs.

エアボート１は、前記プロペラガード９の一対の外周部材１０に膨縮可能な一側浮体２４及び他側浮体２５を設置している。一側浮体２４は、外周部材１０の船体幅方向一側の上部の一側曲線部分１１Ｂに設置している。他側浮体２５は、外周部材１０の船体幅方向他側の上部の他側曲線部分１２Ｂに設置している。
プロペラガード９の一対の外周部材１０には、船体幅方向一側の上部にある一側曲線部分１１Ｂに一側浮体２４を取り付けている。また、プロペラガード９の一対の外周部材１０には、船体幅方向他側に沿って、下部の他側直線部分１２Ａから上部の他側曲線部分１２Ｂまで延びる一対のアーム２６を備えている。一対のアーム２６は、上端に前記他側浮体２５を取り付けている。
前記一対のアーム２６は、外周部材１０の他側直線部分１２Ａの下部に設置したアクチュエータ２７により下端を中心に上端を回転される。アクチュエータ２７は、電動モータ２７Ａにより回転駆動される駆動機構２７Ｂを備え、駆動機構２７Ｂに前記アーム２６の下端を取り付けている。アクチュエータ２７は、アーム２６の下端を中心にアーム２６の上端を外周部材１０に対して近接、離間する方向に回転させ、アーム２６の上端に取り付けた他側浮体２５の設置位置を外周部材１０に対して近接、離間する方向に変更可能としている。
前記船体２には、図４に示すように、圧縮空気ボンベなどの圧力源２８を搭載している。圧力源２８は、前記一側浮体２４及び他側浮体２５に夫々一側連絡通路２９及び他側連絡通路３０により接続している。一側連絡通路２９及び他側連絡通路３０には、夫々一側切換弁３１及び他側切換弁３２を備えている。また、前記船体２には、バッテリなどの電源３３を搭載している。電源３３は、前記アクチュエータ２７の電動モータ２７Ａに連絡電路３４により接続している。連絡電路３４には、切換スイッチ３５を備えている。In the air boat 1, the one side floating body 24 and the other side floating body 25 that can be inflated and contracted are installed on the pair of outer peripheral members 10 of the propeller guard 9. The one side floating body 24 is installed on the one side curved portion 11 </ b> B of the upper part of the outer circumferential member 10 on one side in the hull width direction. The other side floating body 25 is installed on the other side curved portion 12 </ b> B of the upper part on the other side in the hull width direction of the outer peripheral member 10.
A pair of outer peripheral members 10 of the propeller guard 9 has a one-side floating body 24 attached to a one-side curved portion 11B at an upper portion on one side in the hull width direction. The pair of outer peripheral members 10 of the propeller guard 9 includes a pair of arms 26 that extend from the lower other-side straight portion 12A to the upper other-side curved portion 12B along the other side in the hull width direction. The pair of arms 26 has the other side floating body 25 attached to the upper ends.
The pair of arms 26 is rotated at the upper end around the lower end by an actuator 27 installed at the lower part of the other side linear portion 12A of the outer peripheral member 10. The actuator 27 includes a drive mechanism 27B that is rotationally driven by an electric motor 27A, and the lower end of the arm 26 is attached to the drive mechanism 27B. The actuator 27 rotates the upper end of the arm 26 toward and away from the outer peripheral member 10 around the lower end of the arm 26, and sets the installation position of the other side floating body 25 attached to the upper end of the arm 26 to the outer peripheral member 10. On the other hand, it can be changed in the direction of approaching and separating.
As shown in FIG. 4, a pressure source 28 such as a compressed air cylinder is mounted on the hull 2. The pressure source 28 is connected to the one-side floating body 24 and the other-side floating body 25 by a one-side connecting passage 29 and an other-side connecting passage 30, respectively. The one-side communication passage 29 and the other-side communication passage 30 include a one-side switching valve 31 and an other-side switching valve 32, respectively. The hull 2 is equipped with a power source 33 such as a battery. The power source 33 is connected to the electric motor 27 </ b> A of the actuator 27 through a communication circuit 34. The communication circuit 34 is provided with a changeover switch 35.

前記姿勢復元装置２３は、転覆姿勢の船体２に正常姿勢に近づける復元方向Ｃの力を作用させるように、一側浮体２４及び他側浮体２５の膨縮状態及び設置状態の少なくとも一方を制御する制御手段３６を備えている。制御手段３６には、前記一側切換弁３１及び他側切換弁３２と、切換スイッチ３５とを接続している。制御手段３６は、船体２の船体幅方向における回転角度θを検知可能な検知手段３７を備えている。
制御手段３６は、以下のように、検知手段３７の検知した船体２の回転角度θに基づいて、一側切換弁３１及び他側切換弁３２と、切換スイッチ３５とを切換動作し、一側浮体２４及び他側浮体２５の膨縮状態及び設置状態を制御する。
制御手段３６は、船体２が正常姿勢から転覆方向Ｄに転覆限界角度θｓを越えて回転した時に、一側浮体２４に圧力源２８から圧力気体を供給して膨張させるように一側切換弁３１を切換動作する。
次いで、制御手段３６は、一側浮体２４の膨張により転覆姿勢の船体２が復元方向Ｃに回転し、一側浮体２４が水面Ｗに到達した回転角度θに船体２が復元した時に、他側浮体２４に圧力源２８から圧力気体を供給して膨張させるように他側切換弁３２を切換動作する。
そして、制御手段３６は、他側浮体２５の膨張により船体２がさらに回転し、他側浮体２５が水面Ｗに到達した回転角度θに船体２が復元した時に、アクチュエータ２７に電源３３から電力を供給してアーム２６を外周部材１０から離間する方向に回転させるように切換スイッチ３５を切換動作する。
さらに、制御手段３６は、船体２が正常姿勢に復元した時に、他側浮体２５から圧力気体を排出して収縮させるように他側切換弁３２を切換動作する。The posture restoring device 23 controls at least one of the expansion / contraction state and the installation state of the one-side floating body 24 and the other-side floating body 25 so as to apply a force in the restoring direction C that approaches the normal posture to the hull 2 in the capsized posture. Control means 36 is provided. The control means 36 is connected to the one-side switching valve 31 and the other-side switching valve 32 and the switch 35. The control means 36 includes a detection means 37 that can detect the rotation angle θ of the hull 2 in the hull width direction.
Based on the rotation angle θ of the hull 2 detected by the detection means 37, the control means 36 performs the switching operation of the one-side switching valve 31, the other-side switching valve 32, and the switching switch 35 as follows. The expansion / contraction state and installation state of the floating body 24 and the other-side floating body 25 are controlled.
The control means 36 supplies the pressure gas from the pressure source 28 to the one-side floating body 24 and expands the one-side floating body 24 when the hull 2 rotates from the normal posture in the overturning direction D beyond the overturning limit angle θs. Is switched.
Next, when the hull 2 in the overturned posture rotates in the restoring direction C due to the expansion of the one-side floating body 24 and the one-side floating body 24 is restored to the rotation angle θ at which the one-side floating body 24 has reached the water surface W, The other side switching valve 32 is switched so as to expand the floating body 24 by supplying a pressure gas from the pressure source 28.
Then, when the hull 2 is further rotated by the expansion of the other side floating body 25 and the hull 2 is restored to the rotation angle θ at which the other side floating body 25 reaches the water surface W, the control means 36 supplies power to the actuator 27 from the power source 33. The changeover switch 35 is switched so that the arm 26 is supplied and rotated in a direction away from the outer peripheral member 10.
Furthermore, the control means 36 performs the switching operation of the other side switching valve 32 so that the pressure gas is discharged from the other side floating body 25 and contracted when the hull 2 is restored to the normal posture.

次に、エアボート１の姿勢復元装置２３の作用を説明する。
エアボート１は、図５に示す正常姿勢の船体２に何等かの外力が作用して、図６に示すように、船体２が転覆方向Ｄ（図６において時計方向）に転覆限界角度θｓ（例えば、４５度）以下の回転角度θ（例えば、３０度）だけ回転した場合、外力が消滅すると、船自体の復元力で図５に示す正常姿勢に船体２が復元する。一方、エアボート１は、外力が治まらず、図７に示すように、船体２が転覆方向Ｄに転覆限界角度θｓまで回転した場合、エンジン７が自動停止する。
姿勢制御装置２３は、検知手段３７によって船体２の回転角度θを検出し、図７に示す状態の船体２が、図８に示すように、さらに転覆方向Ｄに転覆限界角度θｓを越えた回転角度θ（例えば、６０度）に回転すると、制御手段３６により一側切換弁３１を切換動作し、一側浮体２４に圧力源２８から圧力気体を供給して膨張を開始する。
船体２が転覆方向Ｄに転覆限界角度θｓを越えて回転したエアボート１は、図９に示すように、回転角度θが９０度になった状態から急激に転覆方向Ｄに回転し、図１０に示すように、転覆姿勢が完全に転覆した状態（１８０度）になる。このとき、前記図８の段階で膨張を開始した一側浮体２４は、この間にも膨張を続ける。Next, the operation of the attitude restoring device 23 of the air boat 1 will be described.
In the air boat 1, some external force acts on the hull 2 in a normal posture shown in FIG. 5, and as shown in FIG. 6, the hull 2 rolls over in the rollover direction D (clockwise in FIG. 6). 45 degrees) or less, when the external force disappears, the hull 2 is restored to the normal posture shown in FIG. 5 by the restoring force of the ship itself. On the other hand, in the air boat 1, when the external force is not cured and the hull 2 rotates to the rollover limit angle θs in the rollover direction D as shown in FIG. 7, the engine 7 automatically stops.
The attitude control device 23 detects the rotation angle θ of the hull 2 by the detecting means 37, and the hull 2 in the state shown in FIG. 7 further rotates beyond the capsize limit angle θs in the capsize direction D as shown in FIG. When rotated to an angle θ (for example, 60 degrees), the one-side switching valve 31 is switched by the control means 36, and pressure gas is supplied from the pressure source 28 to the one-side floating body 24 to start expansion.
The airboat 1 in which the hull 2 rotates in the overturning direction D beyond the overturning limit angle θs suddenly rotates in the overturning direction D from the state where the rotational angle θ becomes 90 degrees as shown in FIG. As shown, the overturning posture is completely overturned (180 degrees). At this time, the one-side floating body 24 that has started to expand at the stage of FIG. 8 continues to expand during this time.

図１０に示す転覆姿勢の船体２には、図１１に示すように、膨張する一側浮体２４の浮力が作用し始めて、復元を開始する。このとき、船体２は、一側浮体２４を設けた側への方向（図１１において反時計方向）を復元方向Ｃとして、復元を開始する。
一側浮体２４の膨張により転覆姿勢の船体２が復元方向Ｃに回転し、図１２に示すように、一側浮体２４が完全に膨張し、一側浮体２４が水面Ｗに到達した回転角度θに船体２が回転すると、制御手段３６により他側切換弁３２を切換動作し、他側浮体２５に圧力源２８から圧力気体を供給して膨張を開始する。
図１２に示す転覆姿勢の船体２に膨張する他側浮体２５の浮力が作用し、図１３に示すように、他側浮体２５が水面Ｗに到達した回転角度θ（９０度）に船体２が回転すると、図１４に示すように、制御手段３６により切換スイッチ３５を切換動作してアクチュエータ２７に電源３３から電力を供給し、アーム２６を外周部材１０から離間する方向への回転が開始される。船体２には、このアーム２６の外周部材１０から離間する方向への回転で、アーム２６の上端に取り付けた他側浮体２５の浮力を支えに復元方向Ｃの力が作用する。
図１５に示すように、アーム２６の回転で復元方向Ｃに回転する船体２が、転覆限界角度θｓ以下の回転角度θ（例えば、４５度）に回転すると、船自体の復元力で復元方向Ｃの回転が助長され、図１６に示すように転覆限界角度θｓ（例えば、４５度）以下の回転角度θ（例えば、３０度）まで回転すると、後は船自体の復元力で正常姿勢に船体２が復元を継続する。
回転するアーム２６は、図１７に示すように、船体２が正常姿勢に復元した時点で、図１８に示すように、制御手段３６により他側切換弁３２を切換動作し、アーム２６が水面Ｗ下に没するように他側浮体２５から圧力気体をある程度排出して収縮させる。このとき、制御手段３６は、切換スイッチ３５を切換動作してアクチュエータ２７に電源３３から供給される電力を遮断し、アーム２６が水面Ｗ下に没した状態で回転を停止させる。
エアボート１からの落水者３８は、他側浮体２５から圧力気体をある程度排出して収縮させたことで、水面Ｗ下に没したアーム２６を手掛かりとして、容易に乗船にすることができる。As shown in FIG. 11, the buoyancy of the expanding one-side floating body 24 starts to act on the hull 2 in the capsized attitude shown in FIG. At this time, the hull 2 starts restoration with the direction (counterclockwise in FIG. 11) toward the side where the one-side floating body 24 is provided as the restoration direction C.
The hull 2 in an overturned posture rotates in the restoring direction C due to the expansion of the one-side floating body 24, and the rotation angle θ at which the one-side floating body 24 has completely expanded and the one-side floating body 24 has reached the water surface W as shown in FIG. When the hull 2 rotates, the control unit 36 switches the other side switching valve 32 to supply pressure gas from the pressure source 28 to the other side floating body 25 to start expansion.
The buoyancy of the other floating body 25 that expands acts on the hull 2 in the overturning posture shown in FIG. 12, and the hull 2 is rotated at the rotation angle θ (90 degrees) at which the other floating body 25 reaches the water surface W as shown in FIG. When rotating, as shown in FIG. 14, the changeover switch 35 is switched by the control means 36 to supply electric power from the power source 33 to the actuator 27, and the arm 26 is started to rotate away from the outer peripheral member 10. . A force in the restoring direction C acts on the hull 2 by supporting the buoyancy of the other side floating body 25 attached to the upper end of the arm 26 by the rotation of the arm 26 in the direction away from the outer peripheral member 10.
As shown in FIG. 15, when the hull 2 that rotates in the restoring direction C by the rotation of the arm 26 rotates to a rotation angle θ (for example, 45 degrees) that is equal to or less than the capsize limit angle θs, the restoring direction C is generated by the restoring force of the ship itself. 16, and as shown in FIG. 16, when the vehicle rotates to a rotation angle θ (for example, 30 degrees) that is equal to or less than the capsize limit angle θs (for example, 45 degrees), the hull 2 is returned to a normal posture by the restoring force of the ship itself. Will continue to restore.
The rotating arm 26 switches the other side switching valve 32 by the control means 36 as shown in FIG. 18 when the hull 2 is restored to the normal posture, as shown in FIG. The pressure gas is discharged from the other side floating body 25 to some extent so as to be submerged and contracted. At this time, the control means 36 performs the switching operation of the changeover switch 35 to cut off the electric power supplied from the power supply 33 to the actuator 27 and stop the rotation with the arm 26 submerged under the water surface W.
The water drop person 38 from the air boat 1 can easily get on board with the arm 26 submerged under the water surface W as a clue by discharging the compressed gas from the other side floating body 25 to some extent and contracting.

このように、エアボート１の姿勢復元装置２３は、転覆姿勢の船体２の回転角度θに応じて一側浮体２４及び他側浮体２５に順次に圧力気体を供給して膨張させ、一側浮体２４及び他側浮体２５の浮力により船体２に復元方向Ｃの力を作用させ、さらに、他側浮体２５が水面Ｗに到達した回転角度θに船体２が復元すると、アーム２６を外周部材１０から離間する方向に回転させ、アーム２６の上端に取り付けた他側浮体２５の浮力を支えにアーム２６を介して船体２に復元方向Ｃの力を作用させる。
これにより、姿勢復元装置２３は、転覆姿勢の船体２が転覆限界角度θｓ以下の回転角度θとなって正常姿勢に復元するまで、船体２に復元方向Ｃの力を継続して作用させることができ、船体２を正常姿勢に確実に復元することができる。
また、姿勢復元装置２３は、船体２が正常姿勢に復元した時に、他側浮体２５から圧力気体をある程度排出して収縮させることで、他側浮体２を取り付けたアーム２６を水中に沈めて落水者３８の手掛かりとすることができ、アーム２６によって落水者３８の乗船を容易にすることができる。
なお、外周部材１０の上部にある一側曲線部分１１Ｂに取り付けた一側浮体２４は、正常姿勢に復元した船体２の最高位置にあるので、要レスキューを知らせる役目となるため、オレン色ジなどのレスキューカラーとする。As described above, the posture restoring device 23 of the air boat 1 sequentially supplies the pressure gas to the one side floating body 24 and the other side floating body 25 according to the rotation angle θ of the hull 2 in the capsized posture, and expands the one side floating body 24. When a force in the restoring direction C is applied to the hull 2 by the buoyancy of the other side floating body 25 and the hull 2 is restored to the rotation angle θ at which the other side floating body 25 reaches the water surface W, the arm 26 is separated from the outer peripheral member 10. The force in the restoring direction C is applied to the hull 2 via the arm 26 while supporting the buoyancy of the other side floating body 25 attached to the upper end of the arm 26.
Accordingly, the posture restoring device 23 can continuously apply the force in the restoring direction C to the hull 2 until the hull 2 in the capsized posture returns to the normal posture with the rotation angle θ equal to or smaller than the capsize limit angle θs. And the hull 2 can be reliably restored to the normal posture.
Further, when the hull 2 is restored to a normal posture, the posture restoring device 23 discharges the pressure gas from the other side floating body 25 to some extent and contracts, so that the arm 26 attached with the other side floating body 2 is submerged in water and falls. The arm 26 can make it easy for the water drop person 38 to get on board.
In addition, since the one side floating body 24 attached to the one side curved part 11B in the upper part of the outer peripheral member 10 is in the highest position of the hull 2 restored to the normal posture, it serves as a notification of the rescue required. The rescue color.

図１９〜図２７は、この発明の実施例２を示すものである。実施例２のエアボート１は、実施例１の図１〜図３に示すエアボート１と同様の構成を有しているので、説明を省略する。エアボート１の姿勢復元装置３８は、図１９に示すように、プロペラガード９の外周部材１０に膨縮可能な一側浮体３９及び他側浮体４０を設置している。一側浮体３９は、一対の外周部材１０の船体幅方向一側の上部にある一側曲線部分１１Ｂに設置している。他側浮体４０は、一対の外周部材１０の船体幅方向他側に沿って下部の他側直線部分１２Ａから上部の他側曲線部分１２Ｂまで延びる長さを有し、他側直線部分１２Ａ及び他側曲線部分１２Ｂに設置している。
前記船体２には、図２０に示すように、圧縮空気ボンベなどの圧力源４１を搭載している。圧力源４１は、前記一側浮体３９及び他側浮体４０に夫々一側連絡通路４２及び他側連絡通路４３により接続している。一側連絡通路４２及び他側連絡通路４３には、夫々一側切換弁４４及び他側切換弁４５を備えている。
前記姿勢復元装置３８は、転覆姿勢の船体２に正常姿勢に近づける復元方向Ｃの力を作用させるように、一側浮体３９及び他側浮体４０の膨縮状態を制御する制御手段４６を備えている。制御手段４６には、一側切換弁４４及び他側切換弁４５を接続している。制御手段４６は、船体２の船体幅方向における回転角度θを検知可能な検知手段４７を備えている。
制御手段４６は、以下のように、検知手段４７の検知した船体２の回転角度θに基づいて、一側切換弁４４及び他側切換弁４５を切換動作し、一側浮体３９及び他側浮体４０の膨縮状態を制御する。
制御手段４６は、船体２が正常姿勢から転覆方向Ｄに転覆限界角度θｓを越えて回転した時に、一側浮体３９に圧力源４１から圧力気体を供給して膨張させるように一側切換弁４４を切換動作する。
そして、制御手段４６は、一側浮体３９の膨張により転覆姿勢の船体２が復元方向Ｃに回転し、一側浮体３９が水面Ｗに到達した回転角度θに船体２が復元した時に、外周部材１０の下部の他側直線部分１２Ａから上部の他側曲線部分１２Ｂまで延びる長さを有する他側浮体４０に圧力源４１から圧力気体を供給して膨張させるように他側切換弁４５を切換動作する。19 to 27 show a second embodiment of the present invention. Since the air boat 1 of the second embodiment has the same configuration as the air boat 1 shown in FIGS. 1 to 3 of the first embodiment, the description thereof is omitted. As shown in FIG. 19, the posture restoring device 38 of the air boat 1 is provided with a one side floating body 39 and another side floating body 40 that can be expanded and contracted on the outer peripheral member 10 of the propeller guard 9. The one-side floating body 39 is installed on the one-side curved portion 11 </ b> B at the upper part of the pair of outer peripheral members 10 on one side in the hull width direction. The other side floating body 40 has a length extending from the other side straight line part 12A to the upper side other curved part 12B along the other side of the pair of outer peripheral members 10 in the hull width direction. It is installed on the side curve portion 12B.
As shown in FIG. 20, the hull 2 is equipped with a pressure source 41 such as a compressed air cylinder. The pressure source 41 is connected to the one-side floating body 39 and the other-side floating body 40 by a one-side connecting passage 42 and an other-side connecting passage 43, respectively. The one-side communication passage 42 and the other-side communication passage 43 are provided with a one-side switching valve 44 and an other-side switching valve 45, respectively.
The posture restoring device 38 includes control means 46 that controls the expansion / contraction state of the one-side floating body 39 and the other-side floating body 40 so as to apply a force in the restoring direction C that approaches the normal posture to the hull 2 in the capsized posture. Yes. One side switching valve 44 and the other side switching valve 45 are connected to the control means 46. The control means 46 includes a detection means 47 that can detect the rotation angle θ of the hull 2 in the hull width direction.
The control means 46 performs the switching operation of the one side switching valve 44 and the other side switching valve 45 based on the rotation angle θ of the hull 2 detected by the detection means 47 as described below, and the one side floating body 39 and the other side floating body. 40 expansion / contraction states are controlled.
The control means 46 supplies the pressure gas from the pressure source 41 to the one-side floating body 39 so that the one-side switching valve 44 is inflated when the hull 2 rotates from the normal posture in the overturn direction D over the overturn limit angle θs. Is switched.
And the control means 46, when the hull 2 in the overturned posture rotates in the restoring direction C due to the expansion of the one side floating body 39, and the hull 2 is restored to the rotation angle θ at which the one side floating body 39 reaches the water surface W, the outer peripheral member The other side switching valve 45 is switched so as to expand by supplying pressure gas from the pressure source 41 to the other side floating body 40 having a length extending from the lower side other straight part 12A to the upper side other curved part 12B. To do.

次に、エアボート１の姿勢復元装置３８の作用を説明する。
エアボート１は、図２１に示す正常姿勢の船体２に何等かの外力が作用した際に、船体２が転覆方向Ｄ（図２１において時計方向）に転覆限界角度θｓ（例えば、４５度）以下の回転角度θ（例えば、３０度）だけ回転した場合、外力が消滅すると、船自体の復元力で正常姿勢に船体２が復元する。一方、エアボート１は、外力が治まらず、船体２が転覆方向Ｄに転覆限界角度θｓまで回転した場合、エンジン７が自動停止する。
姿勢制御装置３８は、検知手段４７によって船体２の回転角度θを検出し、転覆限界角度θｓまで回転した船体２が、図２２に示すように、さらに転覆方向Ｄに転覆限界角度θｓを越えた回転角度θ（例えば、６０度）に回転すると、制御手段４６により一側切換弁４４を切換動作し、一側浮体３９に圧力源４１から圧力気体を供給して膨張を開始する。
船体２が転覆方向Ｄに転覆限界角度θｓを越えて回転したエアボート１は、回転角度θが９０度になった状態から急激に転覆方向Ｄに回転し、図２３に示すように、転覆姿勢が完全に転覆した状態（１８０度）になる。このとき、前記図２２の段階で膨張を開始した一側浮体３９は、この間にも膨張を続ける。Next, the operation of the attitude restoring device 38 of the air boat 1 will be described.
When any external force is applied to the hull 2 in the normal posture shown in FIG. 21, the air boat 1 has a rollover limit angle θs (for example, 45 degrees) or less in the rollover direction D (clockwise in FIG. 21). When the external force disappears when the rotation angle θ (for example, 30 degrees) is rotated, the hull 2 is restored to the normal posture by the restoring force of the ship itself. On the other hand, in the air boat 1, when the external force is not cured and the hull 2 rotates in the rollover direction D to the rollover limit angle θs, the engine 7 automatically stops.
The attitude control device 38 detects the rotation angle θ of the hull 2 by the detection means 47, and the hull 2 rotated to the rollover limit angle θs further exceeds the rollover limit angle θs in the rollover direction D as shown in FIG. When rotating at a rotation angle θ (for example, 60 degrees), the control means 46 switches the one-side switching valve 44 to supply the pressure gas from the pressure source 41 to the one-side floating body 39 to start expansion.
The airboat 1 in which the hull 2 has rotated in the overturning direction D beyond the overturning limit angle θs suddenly rotates in the overturning direction D from the state where the rotational angle θ has reached 90 degrees, and the overturning posture is as shown in FIG. It will be in a completely capsized state (180 degrees). At this time, the one-side floating body 39 that has started to expand at the stage of FIG. 22 continues to expand during this time.

図２３に示す転覆姿勢の船体２には、膨張する一側浮体３９の浮力が作用し始めて、復元を開始する。このとき、船体２は、一側浮体３９を設けた側への方向（図２３において反時計方向）を復元方向Ｃとして、復元を開始する。
一側浮体３９の膨張により転覆姿勢の船体２が復元方向Ｃに回転し、図２４に示すように、一側浮体３９が完全に膨張し、一側浮体３９が水面Ｗに到達した回転角度θに船体２が回転すると、制御手段４６により他側切換弁４５を切換動作し、他側浮体４０に圧力源４１から圧力気体を供給して膨張を開始する。
図２４に示す転覆姿勢の船体２は、膨張する他側浮体４０の浮力が作用すると、他側浮体４０が外周部材１０の下部の他側直線部分１２Ａから上部の他側曲線部分１２Ｂまで延びる長さを有することから、図２５に示すように、船体２の回転角度θが９０度以下になっても、水中で膨張する他側浮体４０の浮力が作用を続け、復元方向Ｃに回転される。
図２５に示す他側浮体４０の浮力で復元方向Ｃに回転する船体２が、転覆限界角度θｓ以下の回転角度θ（例えば、４５度）に回転すると、船自体の復元力で復元方向Ｃの回転が助長され、さらに、図２６に示すように、転覆限界角度θｓ（例えば、４５度）以下の回転角度θ（例えば、３０度）まで回転すると、後は船自体の復元力で船体２が復元を継続し、図２７に示すように、船体２が正常姿勢に復元する。The buoyancy of the expanding one-side floating body 39 starts to act on the hull 2 in the capsized attitude shown in FIG. At this time, the hull 2 starts restoration with the direction (counterclockwise in FIG. 23) toward the side where the one-side floating body 39 is provided as the restoration direction C.
The hull 2 in an overturned posture rotates in the restoring direction C due to the expansion of the one side floating body 39, and as shown in FIG. 24, the rotation angle θ at which the one side floating body 39 completely expands and the one side floating body 39 reaches the water surface W. When the hull 2 rotates, the control unit 46 switches the other side switching valve 45 to supply the pressure gas from the pressure source 41 to the other side floating body 40 to start expansion.
24, when the buoyancy of the expanding other side floating body 40 acts, the other side floating body 40 extends from the other side linear portion 12A of the lower part of the outer peripheral member 10 to the upper side other curved portion 12B. Therefore, as shown in FIG. 25, even if the rotation angle θ of the hull 2 is 90 degrees or less, the buoyancy of the other floating body 40 that expands in water continues to act and is rotated in the restoring direction C. .
When the hull 2 that rotates in the restoring direction C by the buoyancy of the other side floating body 40 shown in FIG. 25 rotates to a rotation angle θ (for example, 45 degrees) that is equal to or less than the capsize limit angle θs, the restoring force of the ship itself When the rotation is further promoted and further rotated to a rotation angle θ (for example, 30 degrees) equal to or smaller than the capsize limit angle θs (for example, 45 degrees), the hull 2 is then restored by the restoring force of the ship itself. The restoration is continued, and the hull 2 is restored to the normal posture as shown in FIG.

このように、エアボート１の姿勢復元装置３８は、転覆姿勢の船体２の回転角度θに応じて一側浮体３９及び他側浮体４０に順次に圧力気体を供給して膨張させ、一側浮体３９の浮力により転覆姿勢の船体２が復元方向に回転し、膨張した一側浮体３９が水面Ｗに到達した回転角度θに船体２が復元すると、外周部材１０の下部から上部まで延びる長さを有する他側浮体４０を膨張させて船体２に復元方向の力を作用させる。
これにより、姿勢復元装置３８は、転覆姿勢の船体２が転覆限界角度θｓ以下の回転角度θとなって正常姿勢に復元するまで、船体２に復元方向Ｃの力を継続して作用させることができ、船体２を正常姿勢に確実に復元することができる。なお、図２７に示すように、プロペラガード９の外周部材１０の船体幅方向一側の下部から上部まで延びる長さの膨縮可能な第３の浮体３９Ａを設置し、復元後に手動で膨張させることで再度の転覆防止を図ることができる。As described above, the posture restoring device 38 of the air boat 1 sequentially supplies pressure gas to the one-side floating body 39 and the other-side floating body 40 according to the rotation angle θ of the hull 2 in the capsized posture, and expands the one-side floating body 39. When the hull 2 in the overturned posture rotates in the restoring direction due to the buoyancy of the hull 2 and the hull 2 is restored to the rotation angle θ at which the expanded one side floating body 39 reaches the water surface W, the hull 2 has a length extending from the lower part to the upper part of the outer peripheral member 10. The other side floating body 40 is expanded and a force in a restoring direction is applied to the hull 2.
Thus, the posture restoring device 38 can continuously apply the force in the restoring direction C to the hull 2 until the hull 2 in the capsized posture returns to the normal posture with the rotation angle θ equal to or smaller than the capsize limit angle θs. And the hull 2 can be reliably restored to the normal posture. As shown in FIG. 27, a third floatable body 39A having a length extending from the lower part to the upper part on one side in the hull width direction of the outer peripheral member 10 of the propeller guard 9 is installed and manually expanded after restoration. Therefore, it is possible to prevent the rollover again.

図２８〜図３６は、この発明の実施例３を示すものである。実施例３のエアボート１は、実施例１の図１〜図３に示すエアボート１と同様の構成を有しているので、説明を省略する。エアボート１の姿勢復元装置４８は、図２８に示すように、プロペラガード９の外周部材１０に膨縮可能な一側浮体４９及び複数の第１他側浮体５０〜第４他側浮体５３を設置している。一側浮体４９は、一対の外周部材１０の船体幅方向一側の上部にある一側曲線部分１１Ｂに設置している。複数の第１他側浮体５０〜第４他側浮体５３は、一対の外周部材１０の船体幅方向他側に沿って上部の他側曲線部分１２Ｂから下部の他側直線部分１２Ａに向かい順次に並べて設置している。
前記船体２には、図２９に示すように、圧縮空気ボンベなどの圧力源５４を搭載している。圧力源５４は、前記一側浮体４９及び第１〜第４他側浮体５０〜５３に夫々一側連絡通路５５及び第１〜第４他側連絡通路５６〜５９により接続している。一側連絡通路４２及び第１〜第４他側連絡通路５６〜５９には、夫々一側切換弁６０及び第１〜第４他側切換弁６１〜６４を備えている。28 to 36 show Embodiment 3 of the present invention. Since the air boat 1 of the third embodiment has the same configuration as the air boat 1 shown in FIGS. 1 to 3 of the first embodiment, the description thereof is omitted. As shown in FIG. 28, the posture restoring device 48 of the air boat 1 is provided with a one-side floating body 49 and a plurality of first other-side floating bodies 50 to a fourth other-side floating body 53 on the outer peripheral member 10 of the propeller guard 9. doing. The one-side floating body 49 is installed on the one-side curved portion 11 </ b> B at the upper part of the pair of outer peripheral members 10 on one side in the hull width direction. The plurality of first other-side floating bodies 50 to fourth other-side floating bodies 53 are sequentially arranged from the upper other-side curved portion 12B toward the lower other-side straight portion 12A along the other side of the pair of outer peripheral members 10 in the hull width direction. They are installed side by side.
As shown in FIG. 29, the hull 2 is equipped with a pressure source 54 such as a compressed air cylinder. The pressure source 54 is connected to the one side floating body 49 and the first to fourth other side floating bodies 50 to 53 by a one side communication passage 55 and first to fourth other side communication passages 56 to 59, respectively. The one-side communication passage 42 and the first to fourth other-side communication passages 56 to 59 are provided with a one-side switching valve 60 and first to fourth other-side switching valves 61 to 64, respectively.

前記姿勢復元装置４８は、転覆姿勢の船体２に正常姿勢に近づける復元方向Ｃの力を作用させるように、一側浮体４９及び第１〜第４他側浮体５０〜５３の膨縮状態を制御する制御手段６５を備えている。制御手段６５には、一側切換弁６０及び第１〜第４他側切換弁６１〜６４を接続している。制御手段６５は、船体２の船体幅方向における回転角度θを検知可能な検知手段６６を備えている。
制御手段６５は、以下のように、検知手段６６の検知した船体２の回転角度θに基づいて、一側切換弁６０及び第１〜第４他側切換弁６１〜６４を切換動作し、一側浮体４９及び第１〜第４他側浮体５０〜５３の膨縮状態を制御する。
制御手段６５は、船体２が正常姿勢から転覆方向Ｄに転覆限界角度θｓを越えて回転した時に、一側浮体４９に圧力源５４から圧力気体を供給して膨張させるように一側切換弁６０を切換動作する。
そして、制御手段６５は、一側浮体４９の膨張により転覆姿勢の船体２が復元方向Ｃに回転し、一側浮体４９が水面Ｗに到達した回転角度θに船体２が復元した時に、第１〜第４他側浮体５０〜５３に圧力源５４から圧力気体を供給して、第１〜第４他側浮体５０〜５３を外周部材１０の上部の他側曲線部分１２Ｂから下部の他側直線部分１２Ａに向かい順次に膨張させるように、第１〜第４他側切換弁６１〜６４を切換動作する。The posture restoring device 48 controls the expansion / contraction state of the one-side floating body 49 and the first to fourth other-side floating bodies 50 to 53 so as to apply a force in a restoring direction C that approaches the normal posture to the hull 2 in the capsized posture. Control means 65 is provided. One side switching valve 60 and first to fourth other side switching valves 61 to 64 are connected to the control means 65. The control means 65 includes detection means 66 that can detect the rotation angle θ of the hull 2 in the hull width direction.
The control means 65 switches the one side switching valve 60 and the first to fourth other side switching valves 61 to 64 based on the rotation angle θ of the hull 2 detected by the detection means 66 as follows. The expansion / contraction state of the side floating body 49 and the 1st-4th other side floating bodies 50-53 is controlled.
The control means 65 supplies the pressure gas from the pressure source 54 to the one-side floating body 49 to expand the one-side floating body 49 when the hull 2 rotates from the normal posture in the overturning direction D beyond the overturning limit angle θs. Is switched.
Then, when the hull 2 in the overturned posture rotates in the restoring direction C due to the expansion of the one-side floating body 49 and the hull 2 is restored to the rotation angle θ at which the one-side floating body 49 has reached the water surface W, The pressurized gas is supplied from the pressure source 54 to the fourth other floating bodies 50 to 53, and the first to fourth other floating bodies 50 to 53 are moved from the other curved portion 12 </ b> B above the outer peripheral member 10 to the lower other straight line. The first to fourth other-side switching valves 61 to 64 are switched so as to be sequentially expanded toward the portion 12A.

次に、エアボート１の姿勢復元装置４８の作用を説明する。
エアボート１は、図３０に示す正常姿勢の船体２に何等かの外力が作用した際に、船体２が転覆方向Ｄ（図３０において時計方向）に転覆限界角度θｓ（例えば、４５度）以下の回転角度θ（例えば、３０度）だけ回転した場合、外力が消滅すると、船自体の復元力で正常姿勢に船体２が復元する。一方、エアボート１は、外力が治まらず、船体２が転覆方向Ｄに転覆限界角度θｓまで回転した場合、エンジン７が自動停止する。
姿勢制御装置４８は、検知手段６６によって船体２の回転角度θを検出し、転覆限界角度θｓまで回転した船体２が、図３１に示すように、さらに転覆方向Ｄに転覆限界角度θｓを越えた回転角度θ（例えば、６０度）に回転すると、制御手段６５により一側切換弁６０を切換動作し、一側浮体４９に圧力源５４から圧力気体を供給して膨張を開始する。
船体２が転覆方向Ｄに転覆限界角度θｓを越えて回転したエアボート１は、回転角度θが９０度になった状態から急激に転覆方向Ｄに回転し、図３２に示すように、転覆姿勢が完全に転覆した状態（１８０度）になる。このとき、前記図３１の段階で膨張を開始した一側浮体４９は、この間にも膨張を続ける。Next, the operation of the attitude restoring device 48 of the air boat 1 will be described.
In the air boat 1, when any external force is applied to the hull 2 in the normal posture shown in FIG. 30, the hull 2 has a rollover limit angle θs (for example, 45 degrees) or less in the rollover direction D (clockwise in FIG. 30). When the external force disappears when the rotation angle θ (for example, 30 degrees) is rotated, the hull 2 is restored to the normal posture by the restoring force of the ship itself. On the other hand, in the air boat 1, when the external force is not cured and the hull 2 rotates in the rollover direction D to the rollover limit angle θs, the engine 7 automatically stops.
The attitude control device 48 detects the rotation angle θ of the hull 2 by the detecting means 66, and the hull 2 rotated to the rollover limit angle θs further exceeds the rollover limit angle θs in the rollover direction D as shown in FIG. When rotating at a rotation angle θ (for example, 60 degrees), the control means 65 switches the one-side switching valve 60 to supply pressure gas from the pressure source 54 to the one-side floating body 49 to start expansion.
The airboat 1 in which the hull 2 has rotated in the overturning direction D beyond the overturning limit angle θs suddenly rotates in the overturning direction D from the state where the rotational angle θ is 90 degrees, and the overturning posture is as shown in FIG. It will be in a completely capsized state (180 degrees). At this time, the one-sided floating body 49 that has started to expand at the stage of FIG. 31 continues to expand during this time.

図３２に示す転覆姿勢の船体２には、膨張する一側浮体４９の浮力が作用し始めて、復元を開始する。このとき、船体２は、一側浮体４９を設けた側への方向（図３２において反時計方向）を復元方向Ｃとして、復元を開始する。
一側浮体４９の膨張により転覆姿勢の船体２が復元方向Ｃに回転し、図３３に示すように、一側浮体４９が完全に膨張し、一側浮体４９が水面Ｗに到達した回転角度θに船体２が回転すると、制御手段６５により第１〜第４他側切換弁６１〜６４を切換動作し、第１〜第４他側浮体５０〜５３に圧力源５４から圧力気体を供給し、第１〜第４他側浮体５０〜５３の膨張を開始する。
このとき、制御手段６５は、船体２の回転角度θに応じて、最初に圧力気体を供給する第１他側浮体５０がある程度膨張すると、第２他側浮体５１に圧力気体の供給を開始し、第２他側浮体５１がある程度膨張すると、第３他側浮体５２に圧力気体の供給を開始し、第３他側浮体５２がある程度膨張すると、第４他側浮体５３に圧力気体の供給を開始する。このように、制御手段６５は、船体２の回転角度θに応じて、第１〜第４他側浮体５０〜５３を順次に膨張させる。
図３３に示す転覆姿勢の船体２は、最初に膨張する第１他側浮体５０の浮力が作用して復元方向Ｃに回転し、次いで、２番目に膨張する第２他側浮体５１の浮力が作用して復元方向Ｃに回転し、その後、３番目に膨張する第３他側浮体５２の浮力が作用して復元方向Ｃに回転し、最後に４番目に膨張する第４他側浮体５３の浮力が作用して復元方向Ｃに回転する。このように、船体２には、図３４に示すように、順次に膨張する第１〜第４他側浮体５０〜５３の浮力が継続して作用を続け、回転角度θが９０度以下になっても、復元方向Ｃに回転される。
図３４に示す第１〜第４他側浮体５０〜５３の浮力で復元方向Ｃに回転する船体２が、転覆限界角度θｓ以下の回転角度θ（例えば、４５度）に回転すると、船自体の復元力で復元方向Ｃの回転が助長され、さらに、図３５に示すように、転覆限界角度θｓ（例えば、４５度）以下の回転角度θ（例えば、３０度）まで回転すると、後は船自体の復元力で船体２が復元を継続し、図３６に示すように、船体２が正常姿勢に復元する。The buoyancy of the expanding one-side floating body 49 starts to act on the hull 2 in the capsized attitude shown in FIG. At this time, the hull 2 starts restoration with the direction (counterclockwise in FIG. 32) toward the side where the one-side floating body 49 is provided as the restoration direction C.
The hull 2 in the overturned posture rotates in the restoring direction C due to the expansion of the one side floating body 49, and as shown in FIG. 33, the rotation angle θ at which the one side floating body 49 fully expands and the one side floating body 49 reaches the water surface W. When the hull 2 rotates, the control means 65 switches the first to fourth other side switching valves 61 to 64 to supply the pressure gas from the pressure source 54 to the first to fourth other side floating bodies 50 to 53, Expansion of the first to fourth other floating bodies 50 to 53 is started.
At this time, the control means 65 starts supplying the pressure gas to the second other-side floating body 51 when the first other-side floating body 50 that first supplies the pressure gas expands to some extent according to the rotation angle θ of the hull 2. When the second other side floating body 51 expands to some extent, supply of pressure gas to the third other side floating body 52 starts, and when the third other side floating body 52 expands to some extent, supply of pressure gas to the fourth other side floating body 53 starts. Start. Thus, the control means 65 expands the 1st-4th other side floating bodies 50-53 sequentially according to rotation angle (theta) of the hull 2. FIG.
The hull 2 in the capsize posture shown in FIG. 33 rotates in the restoring direction C due to the buoyancy of the first other side floating body 50 that expands first, and then the buoyancy of the second other side floating body 51 that expands secondly. The buoyancy of the third other-side floating body 52 that acts and rotates in the restoring direction C and then expands third is then actuated to rotate in the restoring direction C and finally the fourth other-side floating body 53 that expands fourth. The buoyancy acts to rotate in the restoring direction C. In this way, as shown in FIG. 34, the buoyancy of the first to fourth other-side floating bodies 50 to 53 that are sequentially expanded continues to act on the hull 2, and the rotation angle θ becomes 90 degrees or less. However, it is rotated in the restoring direction C.
When the hull 2 that rotates in the restoring direction C by the buoyancy of the first to fourth other-side floating bodies 50 to 53 shown in FIG. 34 rotates to a rotation angle θ (for example, 45 degrees) equal to or less than the capsize limit angle θs, As shown in FIG. 35, when the rotation is rotated to a rotation angle θ (for example, 30 degrees) that is equal to or less than the rollover limit angle θs (for example, 45 degrees), the ship itself is restored. As shown in FIG. 36, the hull 2 is restored to the normal posture.

このように、エアボート１の姿勢復元装置４８は、転覆姿勢の船体２の回転角度θに応じて一側浮体４９及び複数の第１〜第４他側浮体５０〜５３に順次に圧力気体を供給し、一側浮体４９の浮力により転覆姿勢の船体２が復元方向Ｃに回転し、膨張した一側浮体４９が水面Ｗに到達した回転角度θに船体２が復元すると、複数の第１〜第４他側浮体５０〜５３を外周部材１０の上部から下部に向かい順次に膨張させて船体２に復元方向Ｃの力を作用させる。
これにより、姿勢復元装置４８は、転覆姿勢の船体２が転覆限界角度θｓ以下の回転角度θとなって正常姿勢に復元するまで、船体２に復元方向Ｃの力を継続して作用させることができ、船体２を正常姿勢に確実に復元することができる。As described above, the posture restoring device 48 of the air boat 1 sequentially supplies the pressure gas to the one-side floating body 49 and the plurality of first to fourth other-side floating bodies 50 to 53 according to the rotation angle θ of the hull 2 in the capsized attitude. When the hull 2 in the overturned posture rotates in the restoring direction C due to the buoyancy of the one side floating body 49 and the hull 2 is restored to the rotation angle θ at which the expanded one side floating body 49 reaches the water surface W, a plurality of first to first 4. The other floating bodies 50 to 53 are sequentially expanded from the upper part to the lower part of the outer peripheral member 10 to apply a force in the restoring direction C to the hull 2.
Accordingly, the posture restoring device 48 can continuously apply the force in the restoring direction C to the hull 2 until the hull 2 in the capsized posture returns to the normal posture with the rotation angle θ equal to or smaller than the capsize limit angle θs. And the hull 2 can be reliably restored to the normal posture.

図３７〜図４６は、この発明の実施例４を示すものである。実施例４のエアボート１は、実施例１の図１〜図３に示すエアボート１と同様の構成を有しているので、説明を省略する。エアボート１の姿勢復元装置６７は、図３７に示すように、プロペラガード９の外周部材１０に膨縮可能な移動浮体６８を設置している。
プロペラガード９の一対の外周部材１０には、船体幅方向一側の上部にある一側曲線部分１１Ｂから、船体幅方向他側の上部の他側曲線部分１２Ｂを経て下部の他側直線部分１２Ａまで延びる一対のレール６９を備えている。一対のレール６９は、図３８に示すように、断面が略横Ｕ字形状を有し、一対の外周部材１０の外周に対向するように取り付けている。レール６９には、移動部材７０の車輪７１を回転可能に係合している。移動部材７０には、前記移動浮体６８を取り付けている。これにより、移動浮体６８は、レール６９に沿って、外周部材１０の船体幅方向一側の上部から、船体幅方向他側の上部を経て下部まで設置位置を変更可能としている。
前記移動部材７０には、円環状のワイヤ７２を取り付けている。ワイヤ７２は、図３９に示すように、一方の折り返した湾曲部分を外周部材１０の船体幅方向一側の一側曲線部分１１Ｂに設けた従動プーリ７３に捲掛け、中間部分をレール６９内に配置して船体幅方向他側の上部の他側曲線部分１２Ｂを経て下部の他側直線部分１２Ａまで延設し、他方の折り返した湾曲部分を駆動プーリ７４に巻き掛けている。
前記円環状のワイヤ７２は、アクチュエータ７５により駆動される。アクチュエータ７５は、電動モータ７５Ａにより駆動される駆動機構７５Ｂを備え、駆動機構７５Ｂに前記駆動プーリ７４を取り付けている。アクチュエータ７５は、駆動プーリ７４によりワイヤ７２を駆動し、移動部材７０に取り付けた移動浮体６８の設置位置を、レール６９に沿って外周部材１０の船体幅方向一側の上部から、船体幅方向他側の上部を経て下部まで変更可能としている。
前記船体２には、図３９に示すように、圧縮空気ボンベなどの圧力源７６を搭載している。圧力源７６は、前記移動浮体６８に連絡通路７７により接続している。連絡通路７７には、切換弁７８を備えている。また、前記船体２には、バッテリなどの電源７９を搭載している。電源７９は、前記アクチュエータ７５に連絡電路８０により接続している。連絡電路８０には、切換スイッチ８１を備えている。37 to 46 show Embodiment 4 of the present invention. Since the air boat 1 of the fourth embodiment has the same configuration as the air boat 1 shown in FIGS. 1 to 3 of the first embodiment, the description thereof is omitted. As shown in FIG. 37, the posture restoring device 67 of the air boat 1 is provided with a movable floating body 68 that can be expanded and contracted on the outer peripheral member 10 of the propeller guard 9.
The pair of outer peripheral members 10 of the propeller guard 9 includes a lower side straight portion 12A from a first side curved portion 11B on the upper side on the one side in the hull width direction to a second side curved portion 12B on the other side in the hull width direction. A pair of rails 69 extending to the right are provided. As shown in FIG. 38, the pair of rails 69 have a substantially U-shaped cross section and are attached so as to face the outer periphery of the pair of outer peripheral members 10. The wheel 69 of the moving member 70 is rotatably engaged with the rail 69. The moving floating body 68 is attached to the moving member 70. Thereby, the movable floating body 68 can change the installation position from the upper part on the hull width direction side of the outer peripheral member 10 along the rail 69 to the lower part through the upper part on the other side in the hull width direction.
An annular wire 72 is attached to the moving member 70. As shown in FIG. 39, the wire 72 hooks one bent curved portion on a driven pulley 73 provided on one side curved portion 11 </ b> B on one side in the hull width direction of the outer peripheral member 10, and an intermediate portion in the rail 69. The other curved portion 12 </ b> B is arranged so as to extend through the other curved portion 12 </ b> B at the other side in the width direction of the hull to the other straight portion 12 </ b> A at the lower portion, and the other folded curved portion is wound around the drive pulley 74.
The annular wire 72 is driven by an actuator 75. The actuator 75 includes a drive mechanism 75B driven by an electric motor 75A, and the drive pulley 74 is attached to the drive mechanism 75B. The actuator 75 drives the wire 72 by the driving pulley 74, and sets the installation position of the movable floating body 68 attached to the moving member 70 from the upper part of the outer circumferential member 10 along the rail 69 in the width direction of the hull. It can be changed from the upper side to the lower side.
As shown in FIG. 39, the hull 2 is equipped with a pressure source 76 such as a compressed air cylinder. The pressure source 76 is connected to the movable floating body 68 by a communication passage 77. The communication passage 77 is provided with a switching valve 78. The hull 2 is equipped with a power source 79 such as a battery. The power source 79 is connected to the actuator 75 through a communication circuit 80. The connection electric circuit 80 includes a changeover switch 81.

前記姿勢復元装置６７は、転覆姿勢の船体２に正常姿勢に近づける復元方向Ｃの力を作用させるように、移動浮体６８の膨縮状態を制御する制御手段８２を備えている。制御手段８２には、前記切換弁７８と切換スイッチ８１とを接続している。制御手段８２は、船体２の船体幅方向における回転角度θを検知可能な検知手段８３を備えている。
制御手段８２は、以下のように、検知手段８３の検知した船体２の回転角度θに基づいて、切換弁７８と切換スイッチ８１とを切換動作し、移動浮体６８の膨縮状態及び設置状態を制御する。
制御手段８２は、船体２が正常姿勢から転覆方向Ｄに転覆限界角度θｓを越えて回転した時に、移動浮体６８に圧力源７６から圧力気体を供給して膨張させるように切換弁７８を切換動作する。
そして、制御手段８２は、移動浮体６８の膨張により転覆姿勢の船体２が復元方向Ｃに回転し、移動浮体６８が水面Ｗに到達した回転角度θに船体２が復元した時に、アクチュエータ７５に電源７９から電力を供給してワイヤ７２を駆動することで、移動部材７０に取り付けられた移動浮体６８を、レール６９に沿って外周部材１０の船体幅方向一側の上部から、船体幅方向他側の上部を経て下部まで移動させるように、切換スイッチ８１を切換動作する。The posture restoring device 67 includes control means 82 for controlling the expansion / contraction state of the movable floating body 68 so that a force in the restoring direction C that brings the hull 2 in the capsized posture close to the normal posture is applied. The control valve 82 is connected to the changeover valve 78 and the changeover switch 81. The control means 82 includes detection means 83 that can detect the rotation angle θ of the hull 2 in the hull width direction.
Based on the rotation angle θ of the hull 2 detected by the detection means 83, the control means 82 performs a switching operation between the switching valve 78 and the changeover switch 81 as follows, and the expansion / contraction state and installation state of the movable floating body 68 are determined. Control.
The control means 82 switches the switching valve 78 so that the movable floating body 68 is expanded by supplying the pressure gas from the pressure source 76 when the hull 2 rotates in the roll-over direction D from the normal posture and exceeds the roll-over limit angle θs. To do.
Then, the control means 82 supplies power to the actuator 75 when the hull 2 in the overturned posture rotates in the restoring direction C due to the expansion of the moving floating body 68 and the hull 2 is restored to the rotation angle θ at which the moving floating body 68 reaches the water surface W. 79. By supplying electric power from 79 and driving the wire 72, the movable floating body 68 attached to the moving member 70 is moved along the rail 69 from the upper part on one side in the hull width direction of the outer peripheral member 10 to the other side in the hull width direction. The changeover switch 81 is switched so as to move to the lower part through the upper part.

次に、エアボート１の姿勢復元装置６７の作用を説明する。
エアボート１は、図４０に示す正常姿勢の船体２に何等かの外力が作用した際に、船体２が転覆方向Ｄ（図４０において時計方向）に転覆限界角度θｓ（例えば、４５度）以下の回転角度θ（例えば、３０度）だけ回転した場合、外力が消滅すると、船自体の復元力で正常姿勢に船体２が復元する。一方、エアボート１は、外力が治まらず、船体２が転覆方向Ｄに転覆限界角度θｓまで回転した場合、エンジン７が自動停止する。
姿勢制御装置６７は、検知手段８３によって船体２の回転角度θを検出し、転覆限界角度θｓまで回転した船体２が、図４１に示すように、さらに転覆方向Ｄに転覆限界角度θｓを越えた回転角度θ（例えば、６０度）に回転すると、制御手段８２により切換弁７８を切換動作し、移動浮体６８に圧力源７６から圧力気体を供給して膨張を開始する。
船体２が転覆方向Ｄに転覆限界角度θｓを越えて回転したエアボート１は、回転角度θが９０度になった状態から急激に転覆方向Ｄに回転し、図４２に示すように、転覆姿勢が完全に転覆した状態（１８０度）になる。このとき、前記図４１の段階で膨張を開始した移動浮体６８は、この間にも膨張を続ける。Next, the operation of the posture restoring device 67 of the air boat 1 will be described.
When any external force is applied to the hull 2 in the normal posture shown in FIG. 40, the air boat 1 has a rollover limit angle θs (for example, 45 degrees) or less in the rollover direction D (clockwise in FIG. 40). When the external force disappears when the rotation angle θ (for example, 30 degrees) is rotated, the hull 2 is restored to the normal posture by the restoring force of the ship itself. On the other hand, in the air boat 1, when the external force is not cured and the hull 2 rotates in the rollover direction D to the rollover limit angle θs, the engine 7 automatically stops.
The attitude control device 67 detects the rotation angle θ of the hull 2 by the detection means 83, and the hull 2 rotated to the rollover limit angle θs further exceeds the rollover limit angle θs in the rollover direction D as shown in FIG. When rotating at a rotation angle θ (for example, 60 degrees), the switching valve 78 is switched by the control means 82, and the pressure gas is supplied from the pressure source 76 to the movable floating body 68 to start expansion.
The airboat 1 in which the hull 2 has rotated in the overturning direction D beyond the overturning limit angle θs suddenly rotates in the overturning direction D from the state in which the rotational angle θ is 90 degrees, and the overturning posture is as shown in FIG. It will be in a completely capsized state (180 degrees). At this time, the movable floating body 68 that has started to expand at the stage of FIG. 41 continues to expand during this time.

図４２に示す転覆姿勢の船体２には、膨張する移動浮体６８の浮力が作用し始めて、復元を開始する。このとき、船体２は、移動浮体６８を設けた側への方向（図４２において反時計方向）を復元方向Ｃとして、復元を開始する。
移動浮体６８の膨張により転覆姿勢の船体２が復元方向Ｃに回転し、図４３に示すように、移動浮体６８が完全に膨張し、移動浮体６８が水面Ｗに到達した回転角度θに船体２が回転すると、制御手段８２により切換スイッチ８１を切換動作し、アクチュエータ７５に電源７９から電力を供給してワイヤ７２を駆動する。
ワイヤ７２の駆動によって、水面Ｗに位置する移動浮体６８が取り付けられた移動部材７０は、レール６９に沿って外周部材１０の船体幅方向一側の上部から、船体幅方向他側の上部を経て下部まで次第に移動する。船体２は、水面Ｗに位置する移動浮体６８が船体幅方向一側の上部から船体幅方向他側の上部を経て下部まで移動することで、図４４に示すように、復元方向Ｃに次第に回転する。
移動浮体６８の移動で復元方向Ｃに次第に回転する船体２は、転覆限界角度θｓ以下の回転角度θ（例えば、４５度）に回転すると、船自体の復元力で復元方向Ｃの回転が助長され、さらに、図４５に示すように、転覆限界角度θｓ（例えば、４５度）以下の回転角度θ（例えば、３０度）まで回転すると、後は船自体の復元力で船体２が復元を継続し、図４６に示すように、船体２が正常姿勢に復元する。42. The buoyancy of the expanding movable floating body 68 starts to act on the hull 2 in the capsized attitude shown in FIG. At this time, the hull 2 starts restoration with the direction (counterclockwise in FIG. 42) toward the side where the movable floating body 68 is provided as the restoration direction C.
Due to the expansion of the movable floating body 68, the hull 2 in the overturning posture rotates in the restoring direction C, and as shown in FIG. 43, the movable floating body 68 is completely expanded, and the rotational body θ reaches the rotation angle θ at which the movable floating body 68 reaches the water surface W. Is rotated, the changeover switch 81 is switched by the control means 82, and electric power is supplied from the power source 79 to the actuator 75 to drive the wire 72.
The moving member 70 to which the movable floating body 68 positioned on the water surface W is attached by driving the wire 72 passes along the rail 69 from the upper part on the one side in the hull width direction of the outer peripheral member 10 to the upper part on the other side in the hull width direction. Move gradually to the bottom. The hull 2 gradually rotates in the restoring direction C as shown in FIG. 44 as the moving floating body 68 located on the water surface W moves from the upper part on one side in the hull width direction to the lower part through the upper part on the other side in the hull width direction. To do.
When the hull 2 that gradually rotates in the restoring direction C due to the movement of the movable floating body 68 rotates to a rotation angle θ (for example, 45 degrees) that is equal to or less than the capsize limit angle θs, rotation of the restoring direction C is facilitated by the restoring force of the ship itself. Furthermore, as shown in FIG. 45, when the vehicle rotates to a rotation angle θ (eg, 30 degrees) that is equal to or less than the capsize limit angle θs (eg, 45 degrees), the hull 2 continues to be restored by the restoring force of the ship itself. 46, the hull 2 is restored to the normal posture.

このように、エアボート１の姿勢復元装置６７は、転覆姿勢の船体２の回転角度θに応じて移動浮体６８に圧力気体を供給し、移動浮体６８の浮力により転覆姿勢の船体２が復元方向Ｃに回転し、膨張した移動浮体６８が水面Ｗに到達した回転角度θに船体２が復元すると、移動浮体６８を船体幅方向一側の上部から船体幅方向他側の上部を経て下部まで次第に移動させて船体２に復元方向Ｃの力を作用させる。
これにより、姿勢復元装置６７は、転覆姿勢の船体２が転覆限界角度θｓ以下の回転角度θとなって正常姿勢に復元するまで、船体２に復元方向Ｃの力を継続して作用させることができ、船体２を正常姿勢に確実に復元することができる。As described above, the attitude restoring device 67 of the air boat 1 supplies the pressure gas to the moving floating body 68 according to the rotation angle θ of the hull 2 in the capsized attitude, and the hull 2 in the capsized attitude is restored in the restoring direction C by the buoyancy of the moving float 68. When the hull 2 is restored to the rotation angle θ at which the expanded floating float 68 has reached the water surface W, the movable float 68 is gradually moved from the upper part on one side in the width direction of the hull to the lower part on the other side in the width direction of the hull. Thus, a force in the restoring direction C is applied to the hull 2.
Accordingly, the posture restoring device 67 can continuously apply the force in the restoring direction C to the hull 2 until the hull 2 in the capsized posture returns to the normal posture with the rotation angle θ equal to or smaller than the capsize limit angle θs. And the hull 2 can be reliably restored to the normal posture.

この発明は、転覆姿勢の船体が転覆限界傾度以下の回転角度となって正常姿勢に復元するまで、船体に復元方向の力を継続して作用させることができ、船体を正常姿勢に確実に復元することができるものであり、エアボートに限らず、小型の船艇に適用することができる。   This invention can continue to apply the force in the restoring direction to the hull until the hull in the capsized attitude returns to the normal attitude with a rotation angle equal to or less than the capsize limit inclination, and the hull is reliably restored to the normal attitude. The present invention can be applied to not only an air boat but also a small boat.

１ エアボート
２ 船体
３ フレーム
６ 支持台
７ エンジン
８ プロペラ
９ プロペラガード
１０ 外周部材
２３ 姿勢復元装置
２４ 一側浮体
２５ 他側浮体
２６ アーム
２７ アクチュエータ
２８ 圧力源
２９ 一側連絡通路
３０ 他側連絡通路
３１ 一側切換弁
３２ 他側切換弁
３３ 電源
３４ 連絡電路
３５ 切換スイッチ
３６ 制御手段
３７ 検知手段
３８ 落水者DESCRIPTION OF SYMBOLS 1 Air boat 2 Hull 3 Frame 6 Support stand 7 Engine 8 Propeller 9 Propeller guard 10 Outer peripheral member 23 Posture restoring device 24 One side floating body 25 Other side floating body 26 Arm 27 Actuator 28 Pressure source 29 One side communication path 30 Other side communication path 31 One Side switching valve 32 Other side switching valve 33 Power supply 34 Connection circuit 35 Changeover switch 36 Control means 37 Detection means 38 Water falling person

Claims (6)

船体の後部上方に搭載したエンジンに推進用のプロペラを取り付けたエアボートの姿勢復元装置において、
前記プロペラを覆うプロペラガードに膨縮可能な浮体を設置し、
転覆姿勢の前記船体に正常姿勢に近づける復元方向の力を作用させるように前記浮体の膨縮状態及び設置状態の少なくとも一方を制御する制御手段を備えたことを特徴とするエアボートの姿勢復元装置。In the attitude restoration device for an air boat in which a propeller for propulsion is attached to the engine mounted on the rear upper part of the hull,
Install a floating body that can be expanded and contracted on the propeller guard that covers the propeller,
An airboat attitude restoration apparatus comprising: control means for controlling at least one of an expansion / contraction state and an installation state of the floating body so as to apply a force in a restoration direction to bring the hull in an overturned posture closer to a normal posture. 前記プロペラガードは前記プロペラの回転軌跡を覆うように逆Ｕ字形状に上方に湾曲突出する外周部材を備え、
前記浮体は前記外周部材の船体幅方向一側の上部に設置される一側浮体と、前記外周部材の船体幅方向他側の上部に設置される他側浮体とからなり、
前記外周部材の船体幅方向他側に沿って下部から上部まで延びるアームを備え、
前記アームの上端に前記他側浮体を取り付けるとともに、前記外周部材の船体幅方向他側の下部に設置したアクチュエータにより前記アームの下端を中心に上端を回転させて前記他側浮体の設置位置を変更可能とし、
前記船体に搭載した圧力源を前記一側浮体及び他側浮体に夫々一側連絡通路及び他側連絡通路により接続し、
前記一側連絡通路及び他側連絡通路には夫々一側切換弁及び他側切換弁を備え、
前記船体に搭載した電源を前記アクチュエータに連絡電路により接続し、
前記連絡電路には切換スイッチを備え、
前記制御手段は前記船体の船体幅方向における回転角度を検知可能な検知手段を備え、
前記検知手段の検知した前記船体の回転角度に基づいて、
前記船体が正常姿勢から転覆方向に転覆限界角度を越えて回転した時に、前記一側浮体に前記圧力源から圧力気体を供給して膨張させるように前記一側切換弁を切換動作し、
前記一側浮体の膨張により転覆姿勢の前記船体が復元方向に回転し前記一側浮体が水面に到達した回転角度に復元した時に、前記他側浮体に前記圧力源から圧力気体を供給して膨張させるように前記他側切換弁を切換動作し、
前記他側浮体の膨張により前記船体がさらに回転し前記他側浮体が水面に到達した回転角度に復元した時に、前記アクチュエータに前記電源から電力を供給して前記アームを前記外周部材から離間する方向に回転させるように前記切換スイッチを切換動作することを特徴とする請求項１に記載のエアボートの姿勢復元装置。The propeller guard includes an outer peripheral member that protrudes upward in an inverted U shape so as to cover the rotation trajectory of the propeller,
The floating body consists of one side floating body installed on the upper side of the outer circumferential member on the hull width direction side, and the other side floating body installed on the upper side of the outer circumferential member on the other side of the hull width direction,
An arm extending from the lower part to the upper part along the other side in the hull width direction of the outer peripheral member,
Attach the other side floating body to the upper end of the arm, and change the installation position of the other side floating body by rotating the upper end around the lower end of the arm by an actuator installed on the lower part of the outer circumferential direction of the outer peripheral member. Made possible
A pressure source mounted on the hull is connected to the one side floating body and the other side floating body by a one side communication passage and another side communication passage, respectively;
The one side communication passage and the other side communication passage are each provided with a one side switching valve and another side switching valve,
Connect the power supply mounted on the hull to the actuator via a communication circuit,
The communication circuit includes a changeover switch,
The control means includes detection means capable of detecting a rotation angle of the hull in the hull width direction,
Based on the rotation angle of the hull detected by the detection means,
When the hull rotates from the normal posture in the capsize direction beyond the capsize limit angle, the one-side switching valve is switched to supply the one-side floating body with the pressure gas from the pressure source to expand,
When the hull in the overturned posture rotates in the restoring direction by the expansion of the one-side floating body and the one-side floating body is restored to the rotation angle that has reached the water surface, the other-side floating body is expanded by supplying a pressure gas from the pressure source. Switching the other side switching valve so as to
A direction in which electric power is supplied from the power source to the actuator to separate the arm from the outer peripheral member when the hull is further rotated by the expansion of the other side floating body and the rotation angle at which the other side floating body reaches the water surface is restored. 2. The air boat attitude restoring device according to claim 1, wherein the changeover switch is operated to rotate to the right. 前記制御手段は、前記船体が正常姿勢に復元した時に、前記他側浮体から圧力気体を排出して収縮させるように前記他側切換弁を切換動作することを特徴とする請求項２に記載のエアボートの姿勢復元装置。   3. The control device according to claim 2, wherein when the hull is restored to a normal posture, the control unit performs a switching operation of the other side switching valve so as to discharge and contract the pressure gas from the other side floating body. Air boat attitude restoration device. 前記プロペラガードは前記プロペラの回転軌跡を覆うように逆Ｕ字形状に上方に湾曲突出する外周部材を備え、
前記浮体は前記外周部材の船体幅方向一側の上部に設置される一側浮体と、前記外周部材の船体幅方向他側の下部から上部まで延びる長さを有して設置される他側浮体とからなり、
前記船体に搭載した圧力源を前記一側浮体及び他側浮体に夫々一側連絡通路及び他側連絡通路により接続し、
前記一側連絡通路及び他側連絡通路には夫々一側切換弁及び他側切換弁を備え、
前記制御手段は前記船体の船体幅方向における回転角度を検知可能な検知手段を備え、
前記検知手段の検知した前記船体の回転角度に基づいて、
前記船体が正常姿勢から転覆方向に転覆限界角度を越えて回転した時に、前記一側浮体に前記圧力源から圧力気体を供給して膨張させるように前記一側切換弁を切換動作し、
前記一側浮体の膨張により転覆姿勢の前記船体が復元方向に回転し前記一側浮体が水面に到達した回転角度に復元した時に、前記外周部材の下部から上部まで延びる長さを有する他側浮体に前記圧力源から圧力気体を供給して膨張させるように前記他側切換弁を切換動作することを特徴とする請求項１に記載のエアボートの姿勢復元装置。The propeller guard includes an outer peripheral member that protrudes upward in an inverted U shape so as to cover the rotation trajectory of the propeller,
The floating body is installed on the upper side of the outer circumferential member on one side in the hull width direction, and the other floating body is installed with a length extending from the lower side to the upper side on the other side of the outer circumferential member in the hull width direction. And consist of
A pressure source mounted on the hull is connected to the one side floating body and the other side floating body by a one side communication passage and another side communication passage, respectively;
The one side communication passage and the other side communication passage are each provided with a one side switching valve and another side switching valve,
The control means includes detection means capable of detecting a rotation angle of the hull in the hull width direction,
Based on the rotation angle of the hull detected by the detection means,
When the hull rotates from the normal posture in the capsize direction beyond the capsize limit angle, the one-side switching valve is switched to supply the one-side floating body with the pressure gas from the pressure source to expand,
The other side floating body having a length extending from the lower part to the upper part of the outer peripheral member when the hull in the overturning posture is rotated in the restoring direction by the expansion of the one side floating body and restored to the rotation angle at which the one side floating body reaches the water surface. 2. The attitude restoring device for an air boat according to claim 1, wherein the other side switching valve is switched so as to expand by supplying a pressure gas from the pressure source. 前記プロペラガードは前記プロペラの回転軌跡を覆うように逆Ｕ字形状に上方に湾曲突出する外周部材を備え、
前記浮体は前記外周部材の船体幅方向一側の上部に設置される一側浮体と、前記外周部材の船体幅方向他側の上部から下部に向かい順次に並べて設置される複数の他側浮体とからなり、
前記船体に搭載した圧力源を前記一側浮体及び複数の他側浮体に夫々一側連絡通路及び複数の他側連絡通路により接続し、
前記一側連絡通路及び複数の他側連絡通路には夫々一側切換弁及び複数の他側切換弁を備え、
前記制御手段は前記船体の船体幅方向における回転角度を検知可能な検知手段を備え、
前記検知手段の検知した前記船体の回転角度に基づいて、
前記船体が正常姿勢から転覆方向に転覆限界角度を越えて回転した時に、前記一側浮体に前記圧力源から圧力気体を供給して膨張させるように前記一側切換弁を切換動作し、
前記一側浮体の膨張により転覆姿勢の前記船体が復元方向に回転し前記一側浮体が水面に到達した回転角度に復元した時に、前記複数の他側浮体に前記圧力源から圧力気体を供給して前記複数の他側浮体を前記外周部材の上部から下部に向かい順次に膨張させるように前記他側切換弁を切換動作することを特徴とする請求項１に記載のエアボートの姿勢復元装置。The propeller guard includes an outer peripheral member that protrudes upward in an inverted U shape so as to cover the rotation trajectory of the propeller,
The floating body is installed on the upper side of the outer circumferential member on one side in the hull width direction, and a plurality of other floating bodies installed side by side sequentially from the upper part on the other side in the width direction of the outer circumferential member toward the lower side. Consists of
A pressure source mounted on the hull is connected to the one side floating body and the plurality of other side floating bodies by a one side communication passage and a plurality of other side communication passages, respectively;
The one-side communication passage and the plurality of other-side communication passages each include a one-side switching valve and a plurality of other-side switching valves,
The control means includes detection means capable of detecting a rotation angle of the hull in the hull width direction,
Based on the rotation angle of the hull detected by the detection means,
When the hull rotates from the normal posture in the capsize direction beyond the capsize limit angle, the one-side switching valve is switched to supply the one-side floating body with the pressure gas from the pressure source to expand,
When the hull in the overturned posture rotates in the restoring direction by the expansion of the one side floating body and the one side floating body is restored to the rotation angle that has reached the water surface, pressure gas is supplied from the pressure source to the plurality of other side floating bodies. 2. The attitude restoration apparatus for an air boat according to claim 1, wherein the other side switching valve is switched so that the plurality of other side floating bodies are sequentially expanded from the upper part to the lower part of the outer peripheral member. 前記プロペラガードは前記プロペラの回転軌跡を覆うように逆Ｕ字形状に上方に湾曲突出する外周部材を備え、
前記浮体は前記外周部材の設置位置を変更可能な移動浮体からなり、
前記外周部材の船体幅方向一側の上部から船体幅方向他側の上部を経て下部まで延びるレールを備え、
前記レールに沿って前記移動浮体を取り付けた移動部材をアクチュエータにより移動させて前記移動浮体の設置位置を前記外周部材の船体幅方向一側の上部から船体幅方向他側の上部を経て下部まで変更可能とし、
前記船体に搭載した圧力源を前記移動浮体に連絡通路により接続し、
前記連絡通路には切換弁を備え、
前記船体に搭載した電源を前記アクチュエータに連絡電路により接続し、
前記連絡電路には切換スイッチを備え、
前記制御手段は前記船体の船体幅方向における回転角度を検知可能な検知手段を備え、
前記検知手段の検知した前記船体の回転角度に基づいて、
前記船体が正常姿勢から転覆方向に転覆限界角度を越えて回転した時に、前記移動浮体に圧力源から圧力気体を供給して膨張させるように切換弁を切換動作し、
前記移動浮体の膨張により転覆姿勢の船体が復元方向に回転し前記移動浮体が水面に到達した回転角度に前記船体が復元した時に、前記アクチュエータに前記電源から電力を供給して前記移動浮体が取り付けられた移動部材をレールに沿って前記外周部材の船体幅方向一側の上部から船体幅方向他側の上部を経て下部まで移動させるように前記切換スイッチを切換動作することを特徴とする請求項１に記載のエアボートの姿勢復元装置。The propeller guard includes an outer peripheral member that protrudes upward in an inverted U shape so as to cover the rotation trajectory of the propeller,
The floating body is a movable floating body that can change the installation position of the outer peripheral member,
A rail extending from the upper part on one side in the hull width direction of the outer peripheral member to the lower part through the upper part on the other side in the hull width direction,
The moving member attached with the movable floating body along the rail is moved by an actuator, and the installation position of the movable floating body is changed from the upper part on one side in the hull width direction of the outer peripheral member to the lower part on the other side in the hull width direction. Made possible
A pressure source mounted on the hull is connected to the movable floating body by a communication passage;
The communication passage includes a switching valve,
Connect the power supply mounted on the hull to the actuator via a communication circuit,
The communication circuit includes a changeover switch,
The control means includes detection means capable of detecting a rotation angle of the hull in the hull width direction,
Based on the rotation angle of the hull detected by the detection means,
When the hull rotates from the normal posture in the capsize direction and exceeds the capsize limit angle, the switching valve is switched so that the movable floating body is expanded by supplying pressure gas from a pressure source,
When the hull in the overturning posture rotates in the restoring direction due to the expansion of the moving floating body and the hull is restored to the rotation angle at which the moving floating body reaches the water surface, power is supplied from the power source to the actuator to attach the moving floating body The changeover switch is operated to switch the moving member along the rail from the upper part on one side of the outer circumferential member to the lower part through the upper part on the other side in the width direction of the hull. 2. An attitude restoration device for an air boat according to 1.
JP2014532712A 2012-09-03 2012-09-03 Airboat attitude recovery device Pending JPWO2014033949A1 (en)

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Application Number Priority Date Filing Date Title
PCT/JP2012/072334 WO2014033949A1 (en) 2012-09-03 2012-09-03 Airboat-righting device

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Application Number Title Priority Date Filing Date
JP2014532712A Pending JPWO2014033949A1 (en) 2012-09-03 2012-09-03 Airboat attitude recovery device

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Publication number Priority date Publication date Assignee Title
CN113665749B (en) * 2021-09-06 2022-06-07 中国海洋大学 Aircraft

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03213493A (en) * 1990-01-16 1991-09-18 Kiichi Taga Gas bag type ship rescure device
JPH07117791A (en) * 1993-10-25 1995-05-09 Mitsuji Ishii Ship having air bag device
JPH09142381A (en) * 1995-11-17 1997-06-03 Ishigaki:Kk Attitude restoring device for overturned ship
FR2762285A1 (en) * 1997-04-17 1998-10-23 Rene Montoro Inflatable rescue float for marine vessel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788264A (en) * 1972-05-22 1974-01-29 I Gibson Cooling shroud for airboat
FR2515135A1 (en) * 1981-10-28 1983-04-29 Quaghebeur Aline Outrigger for righting and refloating trimaran - has dischargeable ballast float and inflatable balloon on mast top
US5056453A (en) * 1990-02-14 1991-10-15 Derek Wright Apparatus for self-righting a rigid inflatable boat
FR2799431B1 (en) * 1999-10-08 2001-11-02 Neptune Concept ASSISTANCE DEVICE FOR STRAIGHTENING AND STABILIZING VESSELS OR VESSELS AND VESSEL OR VESSEL EQUIPPED WITH SUCH A DEVICE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03213493A (en) * 1990-01-16 1991-09-18 Kiichi Taga Gas bag type ship rescure device
JPH07117791A (en) * 1993-10-25 1995-05-09 Mitsuji Ishii Ship having air bag device
JPH09142381A (en) * 1995-11-17 1997-06-03 Ishigaki:Kk Attitude restoring device for overturned ship
FR2762285A1 (en) * 1997-04-17 1998-10-23 Rene Montoro Inflatable rescue float for marine vessel

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US20150056877A1 (en) 2015-02-26

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