JP2785064B2 - Fender - Google Patents
FenderInfo
- Publication number
- JP2785064B2 JP2785064B2 JP2125301A JP12530190A JP2785064B2 JP 2785064 B2 JP2785064 B2 JP 2785064B2 JP 2125301 A JP2125301 A JP 2125301A JP 12530190 A JP12530190 A JP 12530190A JP 2785064 B2 JP2785064 B2 JP 2785064B2
- Authority
- JP
- Japan
- Prior art keywords
- fender
- flexible bag
- bag
- receiving plate
- ship
- 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 - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、岸壁等の接舷基体に固定される防舷装置に
関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fender fixed to a berth or other berthing base.
従来の技術 従来、第４図（ａ）、第５図（ａ）に示すように、船
舶の接岸エネルギーを吸収したり、岸壁係留時の船舶の
岸壁01への揺動当接エネルギーを抑えたりするために、
空気封入袋02を用いて空気弾性を利用した空気式防舷装
置04やゴム03の粘弾性を利用したゴムソリッド防舷装置
05が用いられている。2. Description of the Related Art Conventionally, as shown in FIG. 4 (a) and FIG. 5 (a), it is possible to absorb the berthing energy of a ship, or to suppress the swinging contact energy of the ship to a quay 01 when the quay is moored. To do
Pneumatic fender using air elasticity with air-filled bag 02 and rubber solid fender using viscoelasticity of rubber 03
05 is used.
発明が解決しようとする課題 近年、船舶が高速化するにつれて船体の軽量化が図ら
れ、同時にその強度についてもいわゆる限界設計が行わ
れるようになり、また防舷装置においても防舷装置接触
部の面圧も可能なかぎり小さく、しかも一様に分布する
ことが求められている。Problems to be Solved by the Invention In recent years, as the speed of ships has increased, the weight of the hull has been reduced, and at the same time, the so-called limit design has been made for its strength. The surface pressure is required to be as small as possible and to be evenly distributed.
しかしながら、上記従来技術で防舷装置として空気袋
を用いたものにおいては、防舷装置の接触部の面圧をそ
の内圧と略等しく、かつ一様に分布させることができる
が、防舷装置のたわみ−反力の変形特性が、第４図
（ｂ）に示すように船体による衝撃力を受けた初期にお
いて反発力が小さく、その後反力が徐々に上昇するため
エネルギー吸収効率が悪く装置が大型化していた。However, in the above-mentioned prior art in which an air bag is used as a fender, the surface pressure of the contact portion of the fender can be substantially equal to the internal pressure and uniformly distributed. As shown in FIG. 4 (b), the deformation characteristics of the deflection-reaction force are such that the repulsion force is small in the initial stage of receiving the impact force from the hull, and then the reaction force gradually increases, resulting in poor energy absorption efficiency and a large device. Had been transformed.
また、ゴム弾性を用いたものにおいては、エネルギー
吸収効率が良好で小型化とすることができるが、接触部
の面圧を液体のように均一にすることができず、第５図
（ｂ）に示すように圧縮初期における反発力が大きいた
めに、船体を傷つけ易いばかりか、保留中の船舶の揺動
が大きくなる不都合があった。In the case of using rubber elasticity, the energy absorption efficiency is good and the size can be reduced, but the surface pressure of the contact portion cannot be made uniform like liquid, and FIG. 5 (b) As shown in (1), since the repulsive force in the initial stage of compression is large, not only is the hull easily damaged, but also the rocking of the ship on hold is disadvantageously increased.
本発明はこれら従来技術の欠点を除去し、エネルギー
の吸収効率がよく、小さなサイズで済み、しかも接触部
の面圧を可撓性袋の内圧と略等しくして一様に分布する
ようにした防舷装置を提供することを目的とするもので
ある。The present invention eliminates these drawbacks of the prior art, has a good energy absorption efficiency, requires a small size, and makes the surface pressure of the contact portion substantially equal to the internal pressure of the flexible bag so as to be uniformly distributed. It is an object to provide a fender.
課題を解決するための手段及び効果 本出願発明は、前記目的を達成するように創作された
防舷装置の改良に係り、岸壁等の接舷基体に固定される
防舷装置において、定反力型ゴム製防舷本体の受衝部の
前面に受衝板が取付けられ、該受衝板の前面に非圧縮性
の液体を封入した可撓性袋体が取付けられたことを特徴
とするものである。Means for Solving the Problems and Effects The present invention relates to an improvement of a fender designed to achieve the above-mentioned object, and relates to a fender fixed to a berth or other berthing base and having a constant reaction force. A receiving plate attached to the front surface of the receiving portion of the rubber type fender body, and a flexible bag filled with an incompressible liquid attached to the front surface of the receiving plate. It is.
本出願発明は、前記したように構成されているので、
船舶の接岸時に、船舶の衝突部分が凹凸した形状であ
り、または可撓性袋体の受衝面に対して船舶衝突部分表
面が傾斜した場合であっても、該可撓性袋体の受衝部
は、前記船舶衝突部分表面の状態に対応して比較的広い
範囲に亘って変形して密接することができ、前記船舶衝
突部分と受衝板に局部的に大きな応力が発生することが
避けられ、前記船舶衝突部分および受衝板のいずれか一
方または両方が破損することが未然に阻止される。Since the present invention is configured as described above,
Even when the colliding portion of the ship has an uneven shape or the surface of the colliding portion of the ship is inclined with respect to the receiving surface of the flexible bag at the time of the berthing of the ship, the receiving portion of the flexible bag can be received. The collision portion can be deformed and come into close contact over a relatively wide range according to the state of the surface of the ship collision portion, and a large stress is locally generated in the ship collision portion and the receiving plate. It is avoided and one or both of the ship collision part and the receiving plate are prevented from being damaged.
また本出願発明では、万一前記可撓性袋体が破れた場
合には、単にこの可撓性袋体のみを取外して別の可撓性
袋体を取付け、またはこの取外した可撓性袋体に修理を
施して再生し、この再生可撓性袋体を取付けるだけでよ
いので、交換、補修作業を簡単に遂行できる。Also, in the present invention, if the flexible bag is torn, simply remove the flexible bag and attach another flexible bag, or remove the flexible bag. Since it is only necessary to repair and regenerate the body and attach the regenerated flexible bag, replacement and repair work can be easily performed.
実施例 第１〜３図に記載の実施例について図面を参照して説
明する。Embodiment An embodiment described in FIGS. 1 to 3 will be described with reference to the drawings.
１は防舷装置で、防舷本体２と可撓性袋体３等を有し
ている。防舷本体３はゴム製で中空円筒状をなし、岸壁
等の接舷基体４に植設されたアンカーボルト５にその基
部フランジ６が固定されている。Reference numeral 1 denotes a fender having a fender main body 2, a flexible bag 3, and the like. The fender body 3 is made of rubber and has a hollow cylindrical shape, and its base flange 6 is fixed to an anchor bolt 5 implanted in a berth or other berthing base 4.
また、防舷本体２の上部には方形の上部フランジ７が
基部フランジ６と同様一体に形成され、この上部フラン
ジ７にはボルト８を介して同じく方形の受衝板９が固定
され、受衝板９の４辺外周縁9aには両端が直角に折曲形
成された棒状体10の該両端基部10aが埋設され一体的に
固着されている。A rectangular upper flange 7 is integrally formed on the upper portion of the fender body 2 similarly to the base flange 6, and a rectangular receiving plate 9 is fixed to the upper flange 7 via bolts 8. The bases 10a of both ends of a rod-shaped body 10 whose both ends are bent at right angles are buried and integrally fixed to four outer peripheral edges 9a of the plate 9.
一方、前記可撓性袋体３は後述のように所定の耐圧強
度を有するゴム袋からなり、その外形は上記受衝板９の
前面を覆うように方形に形成されているが、受衝板９の
前面を覆うものであれば特に外形は問わない。On the other hand, the flexible bag 3 is made of a rubber bag having a predetermined pressure resistance as described later, and its outer shape is formed in a square shape so as to cover the front surface of the receiving plate 9. The outer shape is not particularly limited as long as it covers the front surface of No. 9.
可撓性袋体３にはその外周に取付ベルト11が複数個一
体的に設けられ、前記受衝板９の４辺外周縁9aに固設さ
れた棒状体10に緩着されている。A plurality of mounting belts 11 are integrally provided on the outer periphery of the flexible bag body 3 and loosely attached to a rod-shaped body 10 fixed to four outer peripheral edges 9 a of the receiving plate 9.
また、袋体３には注入口12が設けられ、水等の非圧縮
性の液体が空気を混入しないようにして充填されてい
る。なお、非圧縮性液体には凍結を避けるため、凍結防
止剤が混入されている。The bag 3 is provided with an inlet 12 and is filled with an incompressible liquid such as water so as not to mix air. In addition, an antifreezing agent is mixed in the incompressible liquid to avoid freezing.
さらに具体的に述べると、防舷装置が高さＨ方向と直
角に舷と接触して圧縮力を受けると仮定して、防舷本体
２の高さを170cmにして可撓性袋体３の縦、横の長さを
それぞれ320cm、400cmとすれば、防舷装置１の最大反力
が103tonの時、袋体の内圧は略1kg/cm2となり、これ
が面圧として船側に伝達される。More specifically, assuming that the fender is in contact with the side at right angles to the height H direction and receives a compressive force, the height of the fender body 2 is set to 170 cm and the flexible bag 3 Assuming that the vertical and horizontal lengths are 320 cm and 400 cm, respectively, when the maximum reaction force of the fender 1 is 103 ton, the internal pressure of the bag body is approximately 1 kg / cm 2 , which is transmitted to the ship side as surface pressure.
しかし、船舶の舷は傾斜しているものが多く、舷に傾
きがあると袋体３が傾いて接触することになるので、接
触範囲での傾きの差を考えて袋体３の高さ（厚さ方向の
長さ）を長くしなければならず、本実施例では60cmに構
成されている。そして、これに応じて袋体３の内圧を1k
g/cm2とするために袋体３の縦、横のサイズはそれぞ
れ414cm、494cmに構成される。However, the side of the ship is often inclined, and if there is an inclination on the side, the bag 3 is inclined and comes into contact with the ship, so the height of the bag 3 ( (Length in the thickness direction) must be increased, and in the present embodiment, the length is set to 60 cm. Then, according to this, the internal pressure of the bag body 3 is set to 1 k
In order to obtain g / cm 2 , the length and width of the bag 3 are set to 414 cm and 494 cm, respectively.
そして、この内圧1kg/cm2を保持させるためには、
袋体３はゴムの弾性のみでは難しいのでゴム内に補強繊
維を入れる必要があり、この場合袋体３に発生する張力
は30kg/cmとなり、安全率を考慮して150kg/cm2の強
度をもった繊維を縦横に配置するのが望ましい。Then, in order to hold the internal pressure of 1 kg / cm 2 is
Since it is difficult to make the bag 3 only by the elasticity of the rubber, it is necessary to put a reinforcing fiber in the rubber. In this case, the tension generated in the bag 3 is 30 kg / cm, and the strength of 150 kg / cm 2 is considered in consideration of the safety factor. It is desirable to arrange the laid fibers vertically and horizontally.
本実施例は上記のように構成されているので、最初非
圧縮性の液体を封入した可撓性袋体３が舷に接触し、小
さな反力が作用するとともに船体の変位や舷の傾斜面あ
るいは湾曲面に対しても柔軟に追随し変形する。Since the present embodiment is configured as described above, first, the flexible bag body 3 in which the incompressible liquid is sealed comes into contact with the shore, a small reaction force acts, and the displacement of the hull and the inclined surface of the shore. Alternatively, it deforms by flexibly following a curved surface.
また、受衝板９を介して防舷本体２に衝撃エネルギー
が伝達されるが、このエネルギーはゴムの弾性により、
たわみ（変形量）に略比例した反力（定反力）を受けて
よく吸収される。In addition, impact energy is transmitted to the fender body 2 through the receiving plate 9, and this energy is transmitted by the elasticity of rubber.
It is well absorbed by receiving a reaction force (constant reaction force) approximately proportional to the deflection (deformation).
また、可撓性袋体３の取付はその取付ベルト11を受衝
板９に固設した棒状体10に緩着するのみでよく、防舷本
体２に容易に取付けることができる。Further, the flexible bag 3 can be attached to the fender body 2 simply by loosely attaching the attachment belt 11 to the rod 10 fixed to the impact plate 9.
第１図は本発明に係る防舷装置の斜視図、第２図は受衝
板を取付けた防舷本体の断面図、第３図は可撓性袋体の
斜視図、第４図（ａ）は従来の防舷装置の使用態様図、
同（ｂ）はたわみ一反力の関係説明図、第５図（ａ），
（ｂ）は他の従来の防舷装置の使用態様図、及びたわみ
一反力の関係説明図である。 １……防舷装置、２……防舷本体、３……可撓性袋体、
４……接舷基体、５……アンカーボルト、６……基部フ
ランジ、７……上部フランジ、８……ボルト、９……受
衝板、10……棒状体、11……取付ベルト、12……注入
口、FIG. 1 is a perspective view of a fender device according to the present invention, FIG. 2 is a sectional view of a fender body to which a receiving plate is attached, FIG. 3 is a perspective view of a flexible bag body, and FIG. ) Is a view showing the usage of the conventional fender,
(B) is an explanatory view of the relationship between deflection and reaction force, and FIG.
FIG. 2B is a diagram showing a usage pattern of another conventional fender, and a diagram illustrating the relationship between deflection and reaction force. 1 ... fender device, 2 ... fender body, 3 ... flexible bag,
4 ... shore base, 5 ... anchor bolt, 6 ... base flange, 7 ... upper flange, 8 ... bolt, 9 ... receiving plate, 10 ... rod-shaped body, 11 ... mounting belt, 12 …… the inlet,
Claims (1)
おいて、定反力型ゴム製防舷本体の受衝部の前面に受衝
板が取付けられ、該受衝板の前面に非圧縮性の液体を封
入した可撓性袋体が取付けられたことを特徴とする防舷
装置。In a fender fixed to a berth or other berthing base, a receiving plate is attached to a front surface of a receiving portion of a constant reaction force type rubber fender body, and a front surface of the receiving plate is attached to the front surface of the receiving plate. A fender, comprising a flexible bag body in which an incompressible liquid is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2125301A JP2785064B2 (en) | 1990-05-17 | 1990-05-17 | Fender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2125301A JP2785064B2 (en) | 1990-05-17 | 1990-05-17 | Fender |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0424311A JPH0424311A (en) | 1992-01-28 |
| JP2785064B2 true JP2785064B2 (en) | 1998-08-13 |
Family
ID=14906700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2125301A Expired - Fee Related JP2785064B2 (en) | 1990-05-17 | 1990-05-17 | Fender |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2785064B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10184220B1 (en) * | 2015-12-08 | 2019-01-22 | James R McGilvery | Boat fender holder |
| CN106436651B (en) * | 2016-12-07 | 2018-09-14 | 重庆交通大学 | A kind of rotatable multilayer energy-absorbing quay fenders |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS569705U (en) * | 1979-06-29 | 1981-01-27 |
-
1990
- 1990-05-17 JP JP2125301A patent/JP2785064B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0424311A (en) | 1992-01-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |