JPH0445998Y2 - - Google Patents
Info
- Publication number
- JPH0445998Y2 JPH0445998Y2 JP1985048928U JP4892885U JPH0445998Y2 JP H0445998 Y2 JPH0445998 Y2 JP H0445998Y2 JP 1985048928 U JP1985048928 U JP 1985048928U JP 4892885 U JP4892885 U JP 4892885U JP H0445998 Y2 JPH0445998 Y2 JP H0445998Y2
- Authority
- JP
- Japan
- Prior art keywords
- rudder
- corrosion
- foamed resin
- resin material
- stock solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005260 corrosion Methods 0.000 claims description 43
- 230000007797 corrosion Effects 0.000 claims description 32
- 239000011347 resin Substances 0.000 claims description 31
- 229920005989 resin Polymers 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 21
- 239000003973 paint Substances 0.000 claims description 20
- 239000011550 stock solution Substances 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 11
- 239000013535 sea water Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、主として船舶に用いられる舵（フイ
ンを含む。）に関し、特に、キヤビテイ崩壊音の
共鳴防止と耐食性の向上とをはかつた、低騒音式
防食舵に関する。[Detailed description of the invention] [Field of industrial application] The present invention relates to rudders (including fins) used mainly on ships, and in particular, aims to prevent resonance of cavity collapse sounds and improve corrosion resistance. Concerning low-noise anti-corrosion rudder.
一般に、船舶に装着される舵では、複数の鋼製
リブを組み合わせた骨組構造に鋼板を張設するよ
うにした、中空のものが用いられている。
BACKGROUND ART Generally, a hollow rudder mounted on a ship is used, which has a frame structure made up of a combination of a plurality of steel ribs and a steel plate stretched over it.
そして、舵内部の防食をはかるため、従来から
耐食性ペイントの塗装を舵内部に施すことが行な
われている。 In order to prevent corrosion inside the rudder, it has been conventional practice to apply a corrosion-resistant paint to the inside of the rudder.
また、一方、フイン等でも、中空のものが用い
られており、その内部に発泡樹脂材を充填するこ
とが提案されている。 On the other hand, hollow fins are also used, and it has been proposed to fill the inside with a foamed resin material.
しかしながら、従来の防食舵では次のような問
題点がある。
However, the conventional anti-corrosion rudder has the following problems.
(1) 舵内部に単に耐食性ペイントの塗装を施した
だけでは、舵を使用する際に、外部からの衝撃
力などによつて塗装層の剥離を起こしやすいだ
けでなく、海水が溶接欠陥部や外部損傷等によ
る亀裂部から舵内部に侵入して、海水腐食を生
じる。(1) If the inside of the rudder is simply coated with corrosion-resistant paint, the paint layer will not only easily peel off due to external impact forces when the rudder is in use, but also seawater will leak into welding defects and Seawater enters the interior of the rudder through cracks caused by external damage, etc., causing seawater corrosion.
これにより溶接部等の高い応力のかかる部分
に応力腐食割れが発生して、舵を破損する原因
となつている。 This causes stress corrosion cracking to occur in areas that are subject to high stress, such as welds, and is a cause of damage to the rudder.
(2) 中空の舵内部に海水が侵入すると、海水によ
つて舵の重量や慣性モーメントが増加するの
で、舵軸に著しく大きな応力がかかるようにな
り、これにより舵軸の疲労破壊を招くようにな
る。(2) When seawater enters the hollow interior of the rudder, the weight and moment of inertia of the rudder increase due to the seawater, resulting in extremely large stress being applied to the rudder shaft, which may lead to fatigue failure of the rudder shaft. become.
(3) 船舶の航行中、舵に発生したキヤビテーシヨ
ン音（キヤビテイの崩壊音）が、中空の舵内部
の共鳴体としての作用により増幅されて外部へ
伝播する。(3) While the ship is sailing, the cavitation sound (the sound of the cavity collapsing) generated in the rudder is amplified by the hollow rudder's internal action as a resonator and propagates to the outside.
(4) 舵内部に単に発泡樹脂材を充填しただけで
は、温度変化により舵外板が膨張収縮するの
で、舵外板と発泡樹脂材との間に空隙を生じ、
舵内部に単に耐食性ペイントを施した場合と同
様に、海水の侵入に伴つて応力腐食割れをおこ
すようになる。(4) If the inside of the rudder is simply filled with foamed resin material, the rudder outer panel will expand and contract due to temperature changes, creating a gap between the rudder outer panel and the foamed resin material.
As with simply applying corrosion-resistant paint to the inside of the rudder, stress corrosion cracking will occur as seawater intrudes.
本考案は、上述の問題点の解決をはかろうと
するもので、舵内部に海水が侵入するのを防止
して、舵が応力腐食割れするのを防ぎ、舵軸に
かかる過大な応力を減少させ、キヤビテーシヨ
ン音の共鳴を防止して低騒音化をはかれるよう
にした、低騒音式防食舵を提供することを目的
とする。 This invention attempts to solve the above-mentioned problems by preventing seawater from entering the rudder, preventing stress corrosion cracking of the rudder, and reducing excessive stress on the rudder shaft. An object of the present invention is to provide a low-noise anti-corrosion rudder which is capable of reducing noise by preventing resonance of cavitation sound.
このため本考案の防食舵は、複数のリブを組み
合わせた骨組構造と、同骨組構造に張設された外
板とからなる舵において、キヤビテイ崩壊音の共
鳴を防止するとともに舵内部の腐食を防止すべ
く、上記リブに連通孔が形成されて、同連通孔を
通じ舵内部に充填された発泡樹脂材が設けられ、
同発泡樹脂材が、上記舵内部への原液注入時に同
原液中に耐食性ペイントを含有し注入後に発泡固
化したものであることを特徴としている。
For this reason, the anti-corrosion rudder of the present invention prevents the resonance of cavity collapse sounds and corrosion inside the rudder in a rudder consisting of a frame structure made up of a combination of multiple ribs and an outer plate stretched over the frame structure. In order to achieve this, a communication hole is formed in the rib, and a foamed resin material is filled inside the rudder through the communication hole,
The foamed resin material is characterized in that it contains a corrosion-resistant paint in the stock solution when it is injected into the interior of the rudder, and is foamed and solidified after the injection.
上述の本考案の低騒音式防食舵では、複数のリ
ブを組み合わせた骨組構造と、同骨組構造に張設
された外板とからなる舵の内部に、上記リブに形
成された連通孔を通じて耐食性ペイントの含有さ
れた発泡樹脂材が充填され、上記耐食性ペイント
が発泡樹脂材の原液注入時に同原液中に混入され
るもので、舵内部の腐食が十分に防止されるとと
もに、キヤビテイ崩壊音の共鳴も起こらなくな
る。
In the above-mentioned low-noise anti-corrosion rudder of the present invention, corrosion resistance is provided inside the rudder, which is made up of a frame structure made up of a plurality of ribs and an outer plate stretched over the frame structure, through communication holes formed in the ribs. It is filled with a foamed resin material containing paint, and the above-mentioned corrosion-resistant paint is mixed into the foamed resin stock solution when it is poured into the stock solution, which sufficiently prevents corrosion inside the rudder and reduces the resonance of the cavity collapse sound. will no longer occur.
以下、図面により本考案の実施例について説明
すると、第１，２図は本考案の一実施例としての
低騒音式防食舵を示すもので、第１図はその斜視
図、第２図は第１図の−矢視図である。
Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. Figures 1 and 2 show a low-noise anti-corrosion rudder as an embodiment of the present invention. Figure 1 is a perspective view thereof, and Figure 2 is a perspective view of the rudder. 1 is a - arrow view of FIG.
第２図に示すように、舵１は、複数の鋼製リブ
７を組み合わせた骨組構造と、同骨組構造に張設
された鋼製の外板６とをそなえて構成されてい
る。 As shown in FIG. 2, the rudder 1 includes a frame structure in which a plurality of steel ribs 7 are combined, and a steel outer plate 6 stretched over the frame structure.
そして、舵１の上面には舵軸２がフランジカツ
プリングボルト３を介して取り付けられている。
この舵軸２は図示しない舵の駆動機構に接続され
ていて、この駆動機構の作動により舵１の回転駆
動が行なわれる。 A rudder shaft 2 is attached to the upper surface of the rudder 1 via a flange coupling bolt 3.
The rudder shaft 2 is connected to a rudder drive mechanism (not shown), and the rudder 1 is rotationally driven by the operation of this drive mechanism.
また、舵内部の各リブ７には適宜の数の連通孔
８が形成されており、これらのリブ７を組み合わ
せた骨組構造が舵１の内部に存在していても、連
通孔８を通じ発泡樹脂材の原液１１（第１図参
照）が硬化剤と共に注入され、その固化が行なわ
れるようになつている。 Furthermore, an appropriate number of communication holes 8 are formed in each rib 7 inside the rudder, and even if a framework structure in which these ribs 7 are combined exists inside the rudder 1, the foamed resin can be passed through the communication holes 8. A raw material solution 11 (see FIG. 1) is injected together with a hardening agent to effect solidification.
なお、舵１の上面には、２個の空気抜き穴５
と、発泡樹脂材の原液１１を注入するための１個
の注入穴４とが形成されている。 In addition, there are two air vent holes 5 on the top surface of the rudder 1.
and one injection hole 4 for injecting the stock solution 11 of the foamed resin material.
本考案の低騒音式防食舵では、特に舵１の内部
に充填される発泡樹脂材の原液１１に、耐食性ペ
イントが含有されており、同耐食性ペイントは発
泡樹脂材の原液（例えば液状発泡スチロール樹脂
の原液）１１に、その舵内部への注入前に混入さ
れる。 In the low-noise anti-corrosion rudder of the present invention, the stock solution 11 of the foamed resin material filled inside the rudder 1 contains a corrosion-resistant paint. It is mixed into the stock solution) 11 before being injected into the inside of the rudder.
第１図に示すように、耐食性ペイントを含んだ
発泡樹脂材の原液１１は、注入ポンプ９および注
入ホース１０を用いることにより、注入穴４を通
じて、低圧力で舵１の内部に注入される。 As shown in FIG. 1, a stock solution 11 of a foamed resin material containing a corrosion-resistant paint is injected into the interior of the rudder 1 at low pressure through the injection hole 4 by using an injection pump 9 and an injection hose 10.
注入された発泡樹脂材の原液１１は、リブ７で
仕切られた舵内部の各区画に、連通孔８を通じて
くまなく行き渡る。 The injected stock solution 11 of the foamed resin material is thoroughly distributed through the communication hole 8 into each compartment inside the rudder partitioned by the ribs 7 .
そして、発泡樹脂材の原液１１は、舵１の内部
全体に満たされると、２個の空気抜き穴５からあ
ふれ出る。このとき、注入ポンプ９および注入ホ
ース１０による注入操作が停止され、注入穴４お
よび２個の空気抜き穴５に図示しない密封用プラ
グが施される。 When the foamed resin stock solution 11 fills the entire inside of the rudder 1, it overflows from the two air vent holes 5. At this time, the injection operation by the injection pump 9 and the injection hose 10 is stopped, and the injection hole 4 and the two air vent holes 5 are sealed with sealing plugs (not shown).
注入された発泡樹脂材の原液１１は、注入後数
分で硬化する。 The injected stock solution 11 of the foamed resin material hardens within a few minutes after being injected.
上述したように、本考案の防食舵では、発泡樹
脂材の原液１１が舵１の内部全体に発泡してくま
なく行き渡り硬化しているので、舵板表面の溶接
欠陥部や外部損傷等による亀裂部を通じて海水が
舵１内部に侵入するのを防止することができ、万
一舵内部に海水が侵入しても、舵１内面および舵
内リブ７表面に、耐食性ペイントを含んだ発泡樹
脂層が付着しているので、舵１に応力腐食割れを
起こすことはない。 As mentioned above, in the anti-corrosion rudder of the present invention, the undiluted solution 11 of the foamed resin material is foamed throughout the inside of the rudder 1 and hardened, so that cracks caused by weld defects or external damage on the surface of the rudder plate are prevented. Seawater can be prevented from entering the interior of the rudder 1 through the inside of the rudder, and even if seawater were to enter the inside of the rudder, a foamed resin layer containing corrosion-resistant paint is on the inside of the rudder 1 and the surface of the inner rib 7. Since it is adhered, stress corrosion cracking will not occur in the rudder 1.
また、舵１の内部には原液１１の注入固化によ
る軽量の発泡樹脂材が充填されるので、舵１の重
量や慣性モーメントの増加を招くことはない。し
たがつて、舵軸２にかかる過大な応力が軽減さ
れ、舵軸２の疲労破壊が防止される。 Moreover, since the interior of the rudder 1 is filled with a lightweight foamed resin material obtained by pouring and solidifying the stock solution 11, the weight and moment of inertia of the rudder 1 do not increase. Therefore, excessive stress applied to the rudder axle 2 is reduced, and fatigue failure of the rudder axle 2 is prevented.
さらに、舵１内部が、発泡樹脂材の原液１１の
注入・硬化によつて中実状態になつているので、
キヤビテーシヨン音の共鳴体となることを防止で
き、これにより低騒音化をはかることができる。 Furthermore, since the inside of the rudder 1 is in a solid state by injecting and hardening the foamed resin stock solution 11,
It is possible to prevent cavitation sound from becoming a resonator, thereby reducing noise.
また、舵内部に耐食性ペイントを塗布してから
発泡樹脂を充填する場合に比べて、本考案では発
泡樹脂の原液中に耐食性ペイントが含有されるた
め耐食性ペイントの塗布作業を必要とせず、製造
工程が簡易化され、コストが低減される効果もあ
る。 In addition, compared to the case where corrosion-resistant paint is applied inside the rudder and then filled with foamed resin, in this invention, since the corrosion-resistant paint is contained in the foamed resin stock solution, there is no need to apply corrosion-resistant paint, and the manufacturing process This also has the effect of simplifying and reducing costs.
以上詳述したように、本考案の低騒音式防食舵
によれば、複数のリブを組み合わせた骨組構造
と、同骨組構造に張設された外板とからなる舵に
おいて、キヤビテイ崩壊音の共鳴を防止するとと
もに舵内部の腐食を防止すべく、上記リブに連通
孔が形成されて、同連通孔を通じ舵内部に充填さ
れた発泡樹脂材が設けられ、同発泡樹脂材が上記
舵内部への原液注入時に同原液中に耐食性ペイン
トを含有し注入後に固化したものであるという簡
素な構造で、次のような効果ないし利点を得るこ
とができる。
As detailed above, according to the low-noise anti-corrosion rudder of the present invention, the resonance of the cavity collapse sound is achieved in a rudder consisting of a frame structure combining a plurality of ribs and an outer plate stretched over the frame structure. In order to prevent corrosion and corrosion inside the rudder, a communication hole is formed in the rib, and a foamed resin material is filled inside the rudder through the communication hole, and the foamed resin material enters the inside of the rudder. With a simple structure in which corrosion-resistant paint is contained in the stock solution and solidified after injection, the following effects and advantages can be obtained.
(1) 原液注入時に同原液中に耐食性ペイントを含
んだ発泡樹脂材が、舵内部全体に行き渡り硬化
しているので、舵内部への海水の侵入が防止さ
れ、万一海水が侵入しても、舵内面およびリブ
表面に耐食性ペイントを含んだ発泡樹脂層が付
着しているので、舵の応力腐食割れの発生を防
止することができる。(1) When the stock solution is injected, the foamed resin material containing corrosion-resistant paint in the stock solution spreads throughout the interior of the rudder and hardens, preventing seawater from entering the interior of the rudder. Since a foamed resin layer containing corrosion-resistant paint is attached to the inner surface of the rudder and the surface of the ribs, stress corrosion cracking of the rudder can be prevented.
(2) 軽量の発泡樹脂材の充填により海水の侵入が
防止されるようになつているので、舵の重量や
慣性モーメントの増加を招くことがなく、した
がつて舵軸にかかる過大な応力が軽減されて、
舵軸の疲労破壊が防止される。(2) Since the intrusion of seawater is prevented by filling with lightweight foamed resin material, there is no increase in the weight or moment of inertia of the rudder, and therefore excessive stress on the rudder shaft is prevented. reduced,
Fatigue failure of the rudder shaft is prevented.
(3) 舵内部が発泡樹脂材の原液の充填および同原
液の発泡固化により隙間を生じることなく中実
状態になつているのでキヤビテーシヨン音の共
鳴が十分に防止されて、低騒音化が実現される
ようになり、これにより船内における乗心地の
向上に貢献できる。(3) The interior of the rudder is filled with foamed resin material and solidified by foaming to form a solid state with no gaps, which sufficiently prevents resonance of cavitation sound and achieves low noise. This will contribute to improving the ride comfort on board.
(4) また、舵内部に耐食性ペイントを塗布してか
ら発泡樹脂を充填する場合に比べて、本考案で
は発泡樹脂の原液中に耐食性ペイントが含有さ
れるため耐食性ペイントの塗布作業を必要とせ
ず、製造工程が簡易化され、コストが低減され
る効果もある。(4) In addition, compared to applying corrosion-resistant paint inside the rudder and then filling it with foamed resin, in this invention, the corrosion-resistant paint is contained in the foamed resin stock solution, so there is no need to apply corrosion-resistant paint. This also has the effect of simplifying the manufacturing process and reducing costs.
第１，２図は本考案の一実施例としての低騒音
式防食舵を示すもので、第１図はその斜視図、第
２図は第１図の−矢視図である。
１……舵、２……舵軸、３……フランジカツプ
リングボルト、４……注入穴、５……空気抜き
穴、６……外板、７……舵内リブ、８……連通
孔、９……注入ポンプ、１０……注入ホース、１
１……発泡樹脂材。
1 and 2 show a low-noise anti-corrosion rudder as an embodiment of the present invention; FIG. 1 is a perspective view thereof, and FIG. 2 is a view taken along the - arrow in FIG. 1. 1... Rudder, 2... Rudder shaft, 3... Flange coupling bolt, 4... Injection hole, 5... Air vent hole, 6... Outer plate, 7... Rudder inner rib, 8... Communication hole, 9... Injection pump, 10... Injection hose, 1
1... Foamed resin material.
Claims (1)
構造に張設された外板とからなる舵において、キ
ヤビテイ崩壊音の共鳴を防止するとともに舵内部
の腐食を防止すべく、上記リブに連通孔が形成さ
れて、同連通孔を通じ舵内部に充填された発泡樹
脂材が設けられ、同発泡樹脂材が、上記舵内部へ
の原液注入時に同原液中に耐食性ペイントを含有
し注入後に発泡固化したものであることを特徴と
する、低騒音式防食舵。 In a rudder consisting of a frame structure made up of a combination of multiple ribs and an outer plate stretched over the frame structure, communication holes are provided in the ribs in order to prevent resonance of cavity collapse sounds and corrosion inside the rudder. A foamed resin material is formed and filled inside the rudder through the communication hole, and the foamed resin material contains a corrosion-resistant paint in the stock solution when the stock solution is injected into the rudder interior, and is foamed and solidified after injection. A low-noise anti-corrosion rudder characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985048928U JPH0445998Y2 (en) | 1985-04-02 | 1985-04-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985048928U JPH0445998Y2 (en) | 1985-04-02 | 1985-04-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61165299U JPS61165299U (en) | 1986-10-14 |
| JPH0445998Y2 true JPH0445998Y2 (en) | 1992-10-28 |
Family
ID=30565644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985048928U Expired JPH0445998Y2 (en) | 1985-04-02 | 1985-04-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0445998Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3162743A1 (en) * | 2019-12-23 | 2021-09-30 | Bernard Bentgen | Marine wake adapted rudder assembly |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5684916A (en) * | 1979-12-14 | 1981-07-10 | Toray Ind Inc | Manufacturing of rudder for boat |
-
1985
- 1985-04-02 JP JP1985048928U patent/JPH0445998Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5684916A (en) * | 1979-12-14 | 1981-07-10 | Toray Ind Inc | Manufacturing of rudder for boat |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61165299U (en) | 1986-10-14 |
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