JPS61207708A - Fender - Google Patents

Abstract

PURPOSE:To decrease the size of a fender and a mounting area without deterioration in buffering function, by a method wherein a side wall between the impact receiving end and the mounting end of the fender is curved in a wave-form in cross section extending parallel to the impact receiving end. CONSTITUTION:An impact receiving end 2, being an upper end, a mounting end 4, being a lower end, and an impact support part 3, formed in widening in a tapered manner toward the lower end in a range of from the upper end to the lower end, are formed by a rubber resilient material. Annular metallic plates 7 and 8 are buried in the impact receiving end 2 and the mounting end 4 to produce a fender body 1. In which case, the impact support part 3 is curved in a wave-form in cross section extending parallel to the impact receiving end. This enables reduction of the size of the fender 1 in a condition to maintain buffering performance at a high value, resulting in the possibility to reduce the mounting area thereof.

Description

【発明の詳細な説明】 Ｌｔｌ立且及ユ１ 本発明は港湾ないし海洋における船舶や浮遊構造物の衝
撃を緩衝するための防舷装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fender device for cushioning the impact of ships and floating structures in harbors and oceans.

」ｌ１ｌ 従来の一般的な防舷材は第７図および第８図に示すよう
に防舷材本体０１は中空円筒状をなし、防舷材本体０１
の一方の受衝端０３の表面に７Ｆｉ板０２が取付けられ
、他方の取付は端０４は岸壁などに固定される。"l1l As shown in FIGS. 7 and 8, the conventional general fender body 01 has a hollow cylindrical shape, and the fender body 01
A 7Fi plate 02 is attached to the surface of one of the impact receiving ends 03, and the other attached end 04 is fixed to a quay wall or the like.

防舷材本体０１はゴム弾性体で形成されおり、その断面
形状は第６図に示すようにドーナツ状をなしている。The fender main body 01 is made of a rubber elastic body, and has a donut-shaped cross section as shown in FIG.

このような断面形状をなす防舷材を圧縮した場合、圧縮
歪に対する反力の関係は、第９図に示すように、約５０
％程度が最大歪であり、！ｌ衝機能を有するのはこの程
度までで多くて圧縮歪５５％まである。When a fender with such a cross-sectional shape is compressed, the relationship between the reaction force and the compressive strain is approximately 50
The maximum distortion is about %! The compression strain is up to 55% in most cases, and the compression strain is up to this level.

、′シようとする４、１ 緩ｍｅｎ能を維持しつつ反力を大きくするためには一般
に受衝面に平行な断面における断面積を大きくする必要
があり、また最大歪を大きくするためには肉厚を薄くす
る必要がある。4.1 In order to increase the reaction force while maintaining the relaxation capacity, it is generally necessary to increase the cross-sectional area in the cross section parallel to the impact receiving surface, and in order to increase the maximum strain. It is necessary to reduce the wall thickness.

したがって防舷材の性能を上げるためには、防舷材自体
を大型化することが考えられる。Therefore, in order to improve the performance of the fender, it is conceivable to increase the size of the fender itself.

しかるに港湾施設の経済性を考えると、防舷材の取付ス
ペースをいかに小さくしかつ吸収エネルギーをいかに多
くするかが重要な課題であり、前記防舷材の性能向上の
ための大型化と矛盾することとなっていた。However, when considering the economic efficiency of port facilities, it is important to minimize the installation space for fenders and increase the absorbed energy, which conflicts with increasing the size of fenders to improve their performance. It was supposed to happen.

本発明はかかる点に鑑みなされたものでその目的とする
処は、防舷材の断面形状を波形とし、小型で高性能の防
舷材を供する点にある。The present invention was made in view of the above, and an object of the present invention is to provide a small and high-performance fender by making the cross-sectional shape of the fender corrugated.

日　　を　゛　（るための−　および 本発明は、対抗壁を有する弾性体防舷材において、支衝
部と平行な面に沿って防舷材側壁が波形に弯曲されたも
ので、受衝面に平行な断面における断面積を太き（する
とともに肉厚を適当な厚さとすることで、防舷材を大型
化することなく性能を高めることができる。In order to protect against sunlight, the present invention provides an elastic fender having an opposing wall, in which the side wall of the fender is curved in a waveform along a plane parallel to the supporting portion, and the impact receiving surface is curved. By increasing the cross-sectional area in the cross section parallel to (and making the wall thickness appropriate), the performance of the fender can be improved without increasing the size of the fender.

支Ｊｕｔ 以下第１図ないし第４図に示した本発明に係る実施例に
ついて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments according to the present invention shown in FIGS. 1 to 4 will be described below.

第１図は本実施例に係る防舷材本体１の一部欠餞斜視図
であり、防舷材本体１はゴム弾性体でできており上端の
受Ｗｉ端２、下端の取付は端４、上端から下端にかけて
末広がりにテーパーした支衝部３から成り、支衝部３の
横断面の断面形状は第３図に示すように波形を形成して
いる。FIG. 1 is a partially cutaway perspective view of the fender main body 1 according to the present embodiment. , consists of a support portion 3 that tapers outward from the upper end to the lower end, and the cross-sectional shape of the support portion 3 forms a waveform as shown in FIG.

受衝端２および取付は端４には波形をなす支衝部３の波
と波との間に７ランジ５．６が形成されていて、同フラ
ンジを含めて受衝端２、取付は端才！４丈゛ ４には、内部に日内板形の金属板７．８が埋め込まれて
いる（第２図参照）。Seven langes 5.6 are formed between the waves of the corrugated support portion 3 at the impact receiving end 2 and the mounting end 4, and the impact receiving end 2 and the mounting end including the flanges are formed at the impact receiving end 2 and the mounting end 4. Talent! A metal plate 7.8 in the shape of a day plate is embedded inside the length 4 (see Fig. 2).

そして受衝端２のフランジ５にはボルト穴９を有し、受
ＷＮ端２の端面に図示されない受衝板が取り付けられ、
ボルトで固定されるようになっている。The flange 5 of the impact receiving end 2 has a bolt hole 9, and an impact receiving plate (not shown) is attached to the end surface of the receiving WN end 2.
It is fixed with bolts.

また取付は端４の７ランジ６にも取付穴１０が設けられ
、防舷材本体１をボルト等で岸壁に固定するようになっ
ている。For attachment, attachment holes 10 are also provided in the 7-lunge 6 of the end 4, and the fender main body 1 is fixed to the quay with bolts or the like.

本実施例の防舷材本体１は小さなスペースで断面積を大
きくとるために波形断面をなしている。The fender main body 1 of this embodiment has a corrugated cross section in order to have a large cross-sectional area in a small space.

波の数はあまり多くするとフランジの面積が小さくなり
、前衝板を取付けるのに不十分となり、少なすぎると勇
断変形に対する方向性が問題となる。If the number of waves is too large, the area of the flange becomes small, making it insufficient for mounting the front shock plate, and if the number of waves is too small, the directionality with respect to rupture deformation becomes a problem.

そこで以上のことを考慮し、肉厚を均等にして波状断面
を無理なく形成するためには、波の数を８個とし、肉厚
を波の振幅の３分の１程度にする。Therefore, in consideration of the above, in order to make the wall thickness uniform and form a wavy cross section without difficulty, the number of waves should be eight, and the wall thickness should be about one third of the amplitude of the waves.

このようにして形成された防舷材について圧縮歪に対す
る反力をみてみると、第４図のようになる。When looking at the reaction force against compressive strain for the fender formed in this way, it is as shown in Fig. 4.

断面積が大きく横剛性、縦剛性が高いので圧縮歪が小さ
いときは、反力は圧縮歪にほぼ比例して怨激に立上がり
、約２０％の圧縮歪時のピークを過ぎると、−窓以上の
反力を保って平坦な性能を示し、さらに肉厚が薄いこと
から最大歪は７０％程度まで至っている。Since the cross-sectional area is large and the lateral and longitudinal rigidities are high, when the compressive strain is small, the reaction force rises violently almost in proportion to the compressive strain, and after passing the peak at about 20% compressive strain, it exceeds the - window. It exhibits flat performance by maintaining the reaction force of

前記従来の防舷材の性能（第７図）と比べ、取付はスペ
ースはほぼ同じで一定の反力により圧縮歪７０％まで緩
衝機能を維持しており、性能が格段と向上している。Compared to the performance of the conventional fender (Fig. 7), the installation space is almost the same and the buffering function is maintained up to 70% compressive strain due to a constant reaction force, so the performance is significantly improved.

また圧縮歪が大きくなるにしたがい、反力が徒らに上界
ぜず、あるピークを過ぎると平坦となるので、反力が大
きくなり過ぎて船舶等を無理に押し返すようなこともな
く、緩衝装置として有効に動くことができる。In addition, as the compressive strain increases, the reaction force does not rise unnecessarily and becomes flat after passing a certain peak, so the reaction force does not become too large and forcefully push back the ship, etc., and it is buffered. It can operate effectively as a device.

さらに肉厚を厚くせずに断面積を大きくできるので、返
し圧縮されることにより生ずる発熱が小さくゴム弾性体
の耐久性がよい。Furthermore, since the cross-sectional area can be increased without increasing the wall thickness, the heat generated by return compression is small and the durability of the rubber elastic body is good.

本実施例では防舷材本体１は略円錐形状をしていたが、
次に対抗する側壁が平行な防舷材についての別の実施例
を第５図および第６図に示し説明する。In this embodiment, the fender main body 1 had a substantially conical shape, but
Next, another embodiment of a fender whose opposing side walls are parallel will be described as shown in FIGS. 5 and 6.

防舷材本体２０は表面が波形を有する板状のもので、左
右一対に平行して位置する。受衝端２１、取付は端２２
にはフランジ２３．２４が形成され、その内部には金属
板が埋め込まれている。The fender main body 20 is plate-shaped with a corrugated surface, and is positioned parallel to the left and right pair. Impact receiving end 21, installation end 22
A flange 23, 24 is formed in the flange 23, 24, and a metal plate is embedded inside the flange 23,24.

ボルト締め付は用のボルト穴２５が形成されている。Bolt holes 25 are formed for tightening bolts.

また取付は端２２のフランジ２４にもボルト穴２５と対
抗する位置に岸壁等に固定するための取付穴２６が形成
されている。Further, for attachment, a mounting hole 26 for fixing to a quay wall or the like is formed in the flange 24 of the end 22 at a position opposite to the bolt hole 25.

このような平行な一対の防舷材本体２０を一枚の前衝板
を受衝面に取付けることで結合し、岸壁等に固定するこ
とにより取付は面積が小さいにも拘らず横方ゴム１、縦
方向とも剛性の高い防舷材を得ることができる。Such a pair of parallel fender bodies 20 are connected by attaching one front impact plate to the impact-receiving surface, and by fixing it to a quay, etc., the horizontal rubber 1 can be installed even though the area is small. , it is possible to obtain a fender with high rigidity in both the longitudinal direction.

１監匹立浬 本発明は防舷材の側壁を波形とすることで！衝機能の性
能を高く維持したまま、取付は面積を小さくすることが
でき、小型化が可能である。1. The present invention is made by making the side walls of the fender corrugated! While maintaining the high performance of the shock function, the installation area can be reduced, making it possible to downsize.

また防舷材の取付は面積が小さい割りに断面積が大ぎい
ので横方向および縦方向ともに剛性を高くすることがで
きる。Furthermore, since the fender installation has a large cross-sectional area despite its small area, it is possible to increase the rigidity in both the lateral and longitudinal directions.

ざらに防舷材の弾性体の肉厚が薄く形成されているので
６５％ないし７０％程度の最大歪を得ることができると
とともに、内部発熱が小さく耐久性を向上させることが
できる。Since the elastic body of the fender is formed thin, it is possible to obtain a maximum strain of approximately 65% to 70%, and internal heat generation is small, thereby improving durability.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明に係る実施例の一部欠截斜視図、第２図
はその縦断面図、第３図はその横断面図、第４図は同実
施例の防舷材の性能を示す特性図、第５図は本発明に係
る別の実施例の斜視図、第６図はその横断面図、第７図
は従来の防舷材の例を示す斜視図、第８図はその横断面
図、第９図は同従来の防舷材の性能を示す特性図である
。 １・・・防舷材本体、２・・・受衝端、３・・・支衝部
、４・・・取付は端、５．６・・・フランジ、７．８・
・・金属板、９・・・ボルト穴、１０・・・取付穴、２
０・・・防舷材本体、２１・・・受衝端、２２・・・取
付は端、２３．２４・・・フランジ、２５・・・ボルト
穴、２６・・・取付穴。Fig. 1 is a partially cutaway perspective view of an embodiment of the present invention, Fig. 2 is a vertical cross-sectional view thereof, Fig. 3 is a cross-sectional view thereof, and Fig. 4 shows the performance of the fender of the same embodiment. 5 is a perspective view of another embodiment according to the present invention, FIG. 6 is a cross-sectional view thereof, FIG. 7 is a perspective view showing an example of a conventional fender, and FIG. 8 is a perspective view thereof. The cross-sectional view and FIG. 9 are characteristic diagrams showing the performance of the conventional fender. DESCRIPTION OF SYMBOLS 1... Fender main body, 2... Impact receiving end, 3... Support part, 4... Installation end, 5.6... Flange, 7.8...
...Metal plate, 9...Bolt hole, 10...Mounting hole, 2
0... Fender main body, 21... Impact receiving end, 22... Mounting end, 23.24... Flange, 25... Bolt hole, 26... Mounting hole.

Claims (1)

【特許請求の範囲】[Claims] 対抗壁を有する弾性体防舷材において、受衝面と平行な
面に沿って防舷材側壁が波形に弯曲されたことを特徴と
する防舷材。An elastic fender having an opposing wall, characterized in that a side wall of the fender is curved in a waveform along a plane parallel to the impact receiving surface.