JP3108602U - Double-headed ship - Google Patents
Double-headed ship Download PDFInfo
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- JP3108602U JP3108602U JP2004006512U JP2004006512U JP3108602U JP 3108602 U JP3108602 U JP 3108602U JP 2004006512 U JP2004006512 U JP 2004006512U JP 2004006512 U JP2004006512 U JP 2004006512U JP 3108602 U JP3108602 U JP 3108602U
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- double
- propeller
- headed
- variable pitch
- headed ship
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Abstract
【課題】 進行側のプロペラ翼が受ける水流抵抗を可及的に小ならしめ、効率の良い運航を可能ならしめる両頭船の提供。
【解決手段】 船首及び船尾の両方に推進器を備えた両頭船に於いて、推進器の両者を可変ピッチプロペラを採用し、進行側の推進器は可変ピッチプロペラの翼をプロペラ軸と平行する状態で固定されるものとなす。
【選択図】 図２PROBLEM TO BE SOLVED: To provide a double-headed ship capable of minimizing water flow resistance received by a propeller blade on a traveling side as much as possible and enabling efficient operation.
In a double-headed ship equipped with propellers on both the bow and stern, both propulsors employ variable pitch propellers, and the propulsion unit on the traveling side has the wings of the variable pitch propellers parallel to the propeller shaft. It shall be fixed in the state.
[Selection] Figure 2
Description
本考案は、専ら近海水路を貨物や旅客を乗せて運航される両頭船に関する。 The present invention relates to a double-headed ship that operates exclusively on the near sea channel with cargo and passengers.
上記に於いて、比較的近距離の島嶋間を往き来するフェリーなどの貨客船が増加しており、これら貨客船には方向転換の不必要性から船底の船首と船尾の前後箇所へ推進器を備えた両頭船の使用が多く見られるものとなっている。
上記に於ける従来船のものは、前進するさい船首側のプロペラは遊転状態になしておくのであり、従ってプロペラが遊転するさいの抵抗は、船自体の抵抗の凡そ１０％ぐらいになることから、船の速力が減少することになる。ところで、このさいプロペラの遊転を止めて固定状態にすると、上記抵抗はより大きなものとなるのである。
本考案は上記問題を解決せんとするものである。
In the case of the conventional ship in the above, the propeller on the bow side when moving forward is in a free-running state, and therefore the resistance when the propeller rotates is about 10% of the resistance of the ship itself. This will reduce the speed of the ship. By the way, when the propeller is stopped and fixed, the resistance becomes larger.
The present invention is intended to solve the above problems.
本考案は船首及び船尾の両方に推進器を備えた両頭船に於いて、推進器の両者を可変ピッチプロペラを採用したものとなすのであり、而して前進時に於ける進行側の推進器に於ける可変ピッチプロペラの翼は、そのプロペラ軸と平行する状態で当該プロペラの翼を固定させたものとなすのである。 The present invention is a double-headed ship equipped with propellers on both the bow and stern, and both propulsors adopt variable pitch propellers. The blades of the variable pitch propeller in this are fixed to the propeller blades in a state parallel to the propeller axis.
本考案に係る両頭船は、航行中に運転駆動されない側となる進行側の推進器の翼をプロペラ軸と平行する９０°角に可変したものとなし、推進器が受ける水流抵抗を可及的に減少させ、経済性に優れた効率の良い運航を可能ならしめるのである。 The double-headed ship according to the present invention is such that the propulsion wing on the traveling side, which is not driven during navigation, is changed to a 90 ° angle parallel to the propeller shaft, and the water flow resistance received by the propeller is as much as possible. Therefore, it will be possible to achieve efficient operation with excellent economic efficiency.
図１は本考案に係る両頭船の側面図であって１は船体、２，２はその船底に於ける船首部ａと船尾部ｂに取付けてなる推進器、３，３は夫々れの推進器の前方へ取付けてなる舵板（方向舵）である。 FIG. 1 is a side view of a double-headed ship according to the present invention, in which 1 is a hull, 2 and 2 are propulsion devices attached to a bow part a and a stern part b of the ship bottom, and 3 and 3 are propulsion units respectively. It is the rudder plate (direction rudder) attached ahead of a vessel.
本考案に於いては、上記推進器２，２に可変ピッチプロペラが採用されたものとなしてあり、このさいその可変角の従来の市販品にはない９０°の変更をも可能にする特殊設計の構成となしたのものである。（従来品は２０°〜３０°まで）
In the present invention, a variable pitch propeller is adopted for the
図２は上記した船首部ａと船尾部ｂに採用した可変ピッチプロペラの推進器２，２の作用説明図であって、船体を省略し、且つプロペラ翼ｐを俯瞰して示す平面図であり、Ａ及びＢは夫々れ矢印イ及びロ方向へ航行するさいの船首部及び船尾部のプロペラ翼ｐの可変位置状態を示す。
FIG. 2 is a diagram for explaining the operation of the
上記から明らかな通り、前進側となる船首部に於ける推進器のプロペラ翼ｐは推進軸と平行する９０°の位置ｔ０で固定状態となすのであり、このさい方向舵３も同様平行となされるが、この状態では水流抵抗が可及的に最小のものとなすことができる。なお、上記で船尾側（Ｂでは船首側）に於ける推進器ｐはｔ１，ｔ２，ｔ３の如く可変させるのであるが、このさいｔ１位置に於ける変更は前進作用を、またｔ２位置に於ける変更は停止（中立）作用を、そしてｔ３位置に於ける変更は一時的な後進作用を可能にするためのものである。 As apparent from the above, a propeller blade p of at thruster at the bow portion serving as the forward side is than formed in the fixed mode at the position t 0 of 90 ° parallel to the propeller shaft, this again rudder 3 is also made similar parallel However, in this state, the water flow resistance can be minimized as much as possible. In the above, the propeller p on the stern side (the bow side in B) is varied as t 1 , t 2 , t 3 , but at this time, the change at the t 1 position causes the forward action, in changes stopped at t 2 position (neutral) effect and in changes to t 3 position, is intended to allow a temporary reverse action.
本考案は以上の通り構成するものであって、船体の前進と後進を船首と船尾に於ける推進器のピッチ角度を変えるだけで、前進や後進などが簡便且つ迅速に行えるものとなるのであり、とりわけ進行側のプロペラ翼の受ける水流抵抗を可及的に小ならしめることができるので、航速が上昇すると共に経済性に優れた運航を図れる上で寄与するものとなる。 The present invention is configured as described above, and the forward and backward movements of the hull can be performed simply and quickly by changing the pitch angle of the propeller at the bow and stern. In particular, the water flow resistance received by the propeller blades on the traveling side can be reduced as much as possible, which contributes to an increase in cruising speed and operation with excellent economic efficiency.
１ 船体
２ 推進器
３ 方向舵
1
Claims (2)
2. The double-headed ship according to claim 1, wherein the propulsion unit on the traveling side is fixed with the wings of the variable pitch propeller parallel to the propeller shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004006512U JP3108602U (en) | 2004-11-05 | 2004-11-05 | Double-headed ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004006512U JP3108602U (en) | 2004-11-05 | 2004-11-05 | Double-headed ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3108602U true JP3108602U (en) | 2005-04-28 |
Family
ID=43271272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004006512U Expired - Lifetime JP3108602U (en) | 2004-11-05 | 2004-11-05 | Double-headed ship |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3108602U (en) |
-
2004
- 2004-11-05 JP JP2004006512U patent/JP3108602U/en not_active Expired - Lifetime
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