JPH0321710A - Fender device for ship and the like - Google Patents
Fender device for ship and the likeInfo
- Publication number
- JPH0321710A JPH0321710A JP1154431A JP15443189A JPH0321710A JP H0321710 A JPH0321710 A JP H0321710A JP 1154431 A JP1154431 A JP 1154431A JP 15443189 A JP15443189 A JP 15443189A JP H0321710 A JPH0321710 A JP H0321710A
- Authority
- JP
- Japan
- Prior art keywords
- small
- intermediate frame
- ship
- shock absorbing
- absorbing member
- 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.)
- Granted
Links
- 230000035939 shock Effects 0.000 claims abstract description 58
- 239000000872 buffer Substances 0.000 claims description 10
- 239000012464 large buffer Substances 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 abstract description 13
- 238000010008 shearing Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 29
- 239000006096 absorbing agent Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 239000013013 elastic material Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011359 shock absorbing material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
Abstract
Description
【発明の詳細な説明】
皮呈±坐赴足公立
本発明は、船舶等の浮遊物（以下『船舶１と称する）が
岸壁等の構造物（以下ｒ岸壁』と称する）へ接舷する時
に生ずる衝撃力を吸収して緩和し、船舶および岸壁の損
傷を防止するための防舷装置に係り、特に大型船も小型
船も接舷する岸壁に取付けられる船舶の防舷装置に関す
るものである。[Detailed Description of the Invention] The present invention is applicable to a floating object such as a ship (hereinafter referred to as "vessel 1") when it comes alongside a structure such as a quay (hereinafter referred to as "r quay"). The present invention relates to a fender system for absorbing and mitigating the impact force generated and preventing damage to ships and quay walls, and particularly to fender systems for ships that are attached to quay walls where both large and small ships come alongside.
従来生技先
従来、防舷材は、それが取付けられる岸壁に接舷する可
能性のある船舶のうちの最大の船舶を考慮して、その大
きさおよび緩衝能力が決定されていた。BACKGROUND OF THE INVENTION Conventionally, the size and buffering capacity of fenders have been determined by taking into account the largest vessel that is likely to come alongside the quay on which the fender is attached.
しよ゛と る
しかしながら、外洋に設けられるシーバースの如き大型
船舶専用のものや内航船専用の小型船舶専用のものを除
けば、一般の商用岸壁に接岸する船舶の大きさは種々雑
多であり、大型船舶用として設計された岸壁およびその
防舷材に小型船舶が接岸した場合、該小型船舶に対して
過大な反力が作用し、同船舶の外板等の構造部材を損傷
するなどの問題があった。また逆に、小型船舶用として
設計された岸壁およびその防舷材に大型船舶が接岸した
場合、過大な衝突力が発生して岸壁および防舷材を損傷
し、該大型船舶に対しては剛体たる岸壁から直接反力が
作用して同船舶の外板等の構造部材を損傷するなどの問
題があった。However, with the exception of large vessels such as sea berths set up on the open sea, and vessels exclusive to small domestic vessels, the sizes of vessels that berth at general commercial quays vary widely. When a small ship berths at a quay designed for large ships and its fenders, an excessive reaction force acts on the small ship, causing problems such as damage to the ship's outer panels and other structural members. was there. Conversely, if a large ship berths against a quay designed for small vessels and its fender, an excessive collision force will occur, damaging the quay and fender, and causing damage to the quay and its fender. There were problems such as direct reaction force acting from the barrel quay and damaging structural members such as the outer plating of the ship.
るための および
本発明は、このような従来の防舷材の難点を克服した、
大型船および小型船双方に適用し得る防舷装置の改良に
係り、少なくとも一方に岸壁等の構造物への取付け部を
有する弾性大型緩衝部材と、該大型緩衝部材の前面に取
付けられた中間フレームと、該中間フレームの前面に前
後の移動を許して配設された受衝フレームと、前記中間
フレームと受衝フレームの間にこれらを弾性的に接続す
る弾性小型緩衝部材とより或り、前記小型緩衝部材のバ
ネ定数が前記大型緩衝部材のバネ定数より小さいことを
特徴とするもので、その目的とする処は、一つの防舷装
置を用いて小型船舶の接舷時には小さい反力が緩衝し、
大型船舶の接舷時には大きな反力で緩衝し得る、簡単な
構造の防舷装置を供する点にある。The present invention overcomes the difficulties of such conventional fender materials.
A large elastic shock absorbing member having an attachment portion to a structure such as a quay on at least one side, and an intermediate frame attached to the front surface of the large shock absorbing member, for improving fenders applicable to both large ships and small ships. , an impact receiving frame disposed on the front surface of the intermediate frame so as to be movable back and forth, and an elastic small buffer member elastically connecting the intermediate frame and the impact receiving frame between the intermediate frame and the impact receiving frame; The spring constant of the small shock absorbing member is smaller than the spring constant of the large shock absorbing member, and its purpose is to buffer a small reaction force when a small ship comes alongside using one fender device. death,
The object of the present invention is to provide a fender device with a simple structure that can buffer a large reaction force when a large ship comes alongside.
本発明は上記のような構或となっているため、小型船舶
が岸壁に接岸する時には、接岸する同船舶によって前記
受衝フレームを介して前記小型緩衝部材が変形され、接
舷船舶の運動エネルギーは小型緩衝部材の変形による位
置エネルギーに置換されて吸収される。小型船舶の接舷
時の運動エネルギーは大きくないため、小型緩衝部材が
変形して、受衝フレームが中間フレームに当接する以前
に吸収されてしまう。この時、受衝フレームに加えられ
る荷重は、小型緩衝部材および中間フレームを介して大
型緩衝部材にも伝えられるが、大型緩衝部材のバネ定数
は小型緩衝部材のバネ定数より遥かに大きいので、大型
緩衝部材は僅かに小型緩衝部材の反力に相当する分だけ
変形するのみでその吸収エネルギーの量は僅かである。Since the present invention has the above-described structure, when a small boat berths at a quay, the small buffer member is deformed by the berthed vessel via the impact receiving frame, and the kinetic energy of the berthing vessel is absorbed. is replaced and absorbed by potential energy due to the deformation of the small shock absorbing member. Since the kinetic energy of a small boat coming alongside is not large, the small shock absorbing member deforms and the impact is absorbed before the impact receiving frame contacts the intermediate frame. At this time, the load applied to the impact receiving frame is also transmitted to the large shock absorbing member via the small shock absorbing member and the intermediate frame, but since the spring constant of the large shock absorbing member is much larger than that of the small shock absorbing member, The shock absorbing member deforms only by an amount corresponding to the reaction force of the small shock absorbing member, and the amount of absorbed energy is small.
大型船舶が岸壁に接岸する時には、その運動エネルギー
は大きく、小型緩衝部材が変形して、受衝フレームが中
間フレームに当接する迄には小型緩衝部材では吸収し切
れず、受衝フレームは中間フレームに当接し、それ以後
は小型緩衝部材は最早それ以上変形せず、直接大型緩衝
部材が受衝フレームおよび中間フレームを介して、接舷
船舶の荷重を受けながら変形して当該船舶の運動エネル
ギーを吸収し、当該船舶の運動エネルギーが全部大型大
型緩衝部材の変形による位置エネルギーに置換された時
、当該船舶は停止する。大型緩衝部材の反力は小型緩衝
部材の反力よりは当然大きくなるが、対象大型船舶の強
度も大きいので、大型緩衝部材のバネ定数に適正なもの
を選択すれば、当該船舶が防舷装置の反力によって損傷
することはなく、防舷装置が過大な変形をすることもな
ければ、岸壁が直接衝突力を受けることもないため、防
舷装置および岸壁も損傷することはない。When a large ship approaches a quay, the kinetic energy is so large that it cannot be fully absorbed by the small shock absorbing member until the small shock absorbing member deforms and the shock receiving frame comes into contact with the intermediate frame, and the shock receiving frame is forced into contact with the intermediate frame. After that, the small shock absorbing member no longer deforms, and the large shock absorbing member directly deforms while receiving the load of the ship alongside, through the impact receiving frame and the intermediate frame, and absorbs the kinetic energy of the ship. When all of the kinetic energy of the ship is replaced by potential energy due to the deformation of the large shock absorbing member, the ship will stop. The reaction force of a large shock absorber is naturally greater than that of a small shock absorber, but the strength of the target large ship is also large, so if the appropriate spring constant is selected for the large shock absorber, the ship can be used as a fender. The fender and the quay are not damaged by the reaction force, the fender is not excessively deformed, and the quay is not directly subjected to the collision force, so the fender and quay are not damaged.
このようにして、接舷船舶の接舷岸壁方向への運動が停
止すると、大型緩衝部材は、その反力によって接舷船舶
を接舷岸壁とは反対の方向に付勢し、徐々に反力を滅じ
ながら変形を回復し、その反力が小型緩衝部材の最大反
力と等しくなった後には、小型緩衝部材も同時にその反
力を減じながら変形を回復し、両者の反力がなくなり、
完全に変形を回復した時点で、接舷作業の１サイクルが
完了する。接舷岸壁とは反対方向に付勢された当該接舷
船舶は、その運動を係留索等によって引き留められ、再
び接岸岸壁方向への運動を始め、再び防舷装置に負荷を
与えるが、２次以降の運動エネルギーは初回の運動エネ
ルギーに較べ極めて小さいから考慮する必要はない。In this way, when the movement of the vessel alongside the vessel stops in the direction of the vessel alongside the quay, the large buffer member uses its reaction force to urge the vessel alongside the vessel in the direction opposite to the quay, and the reaction force gradually increases. After the deformation is recovered while decreasing the reaction force and the reaction force becomes equal to the maximum reaction force of the small shock absorber, the small shock absorber also recovers the deformation while reducing the reaction force at the same time, and the reaction force of both disappears.
One cycle of coming alongside is completed when the deformation is completely recovered. The vessel alongside the vessel, which was urged in the opposite direction to the berth, is restrained by mooring ropes, etc., and begins to move towards the berth again, placing a load on the fender again, but the secondary The subsequent kinetic energy is extremely small compared to the initial kinetic energy, so there is no need to consider it.
上述のとおり、小型船舶に対しては小さい反力で、大型
船舶に対しては大きい反力で緩衝するため、接舷船舶に
損傷を与えることがない。As mentioned above, since a small reaction force is buffered against a small vessel and a large reaction force is buffered against a large vessel, no damage is caused to the ships alongside.
また、小型緩衝部材の変形は、受衝板と中間フレームの
距離によって規制されるため、該小型緩衝部材が過大に
変形して損傷することはない。Moreover, since the deformation of the small shock absorbing member is regulated by the distance between the impact receiving plate and the intermediate frame, the small shock absorbing member will not be damaged due to excessive deformation.
裏一胤一班
以下第１図ないし、第３図に図示された本発明の第１の
実施例の構造について説明する。The structure of the first embodiment of the present invention illustrated in FIGS. 1 to 3 will now be described.
大型緩衝部材１はゴム等の弾性体から或り、第２図に図
示されるように、その本体は水平線２を中心とする厚肉
円筒状に或形され、厚肉円筒部３の前後端部に半径方向
に突出したフランジ部４、５が形威され、このフランジ
部４、５に周方向に亘り一定間隔毎に取付け孔（図示さ
れず）が設けられている。The large shock absorbing member 1 is made of an elastic material such as rubber, and as shown in FIG. Flange portions 4 and 5 projecting in the radial direction are formed on the portion, and mounting holes (not shown) are provided in the flange portions 4 and 5 at regular intervals over the circumferential direction.
上記大型緩衝部材１はその平滑な後端面が岸壁６に密着
し、後端フランジ部５の取付け孔を貫通したアンカ・ボ
ルト７とこれに螺着されるナット８によって強固に固着
されている。The large buffer member 1 has its smooth rear end surface in close contact with the quay wall 6, and is firmly fixed by an anchor bolt 7 passing through a mounting hole in the rear end flange portion 5 and a nut 8 screwed onto the anchor bolt 7.
中間フレームＩＯは、口型断面形状を有する一体の調製
部材で、一辺の長さが上記大型緩衝材１の前端フランジ
部４の直径よりやや大きな略正方形の垂直面部１１とそ
の上下端縁から後方に延びる水平フランジ部１２を有し
、平面部ｌ１には前記大型緩衝部材ｌの前端フランジ部
４の取付け孔に対応した個所に植込みボル｝１３が一体
に突設されている．上記垂直面部１１の後端平滑面は大
型緩衝部材ｌの前端平滑面に密着し、同大型緩衝部材１
の前端フランジ４の取付け孔に中間フレーム１０の植込
みボル目３が嵌合され、ボルト１３に螺着されるナツ目
４によって、大型緩衝部材へ強固に取付けられている。The intermediate frame IO is an integral adjustment member having a mouth-shaped cross-sectional shape, and includes a substantially square vertical surface portion 11 whose length on one side is slightly larger than the diameter of the front end flange portion 4 of the large cushioning material 1, and a rearward portion from the upper and lower edges of the vertical surface portion 11. It has a horizontal flange part 12 extending to , and a stud bolt 13 is integrally protruded from the plane part l1 at a location corresponding to the mounting hole of the front end flange part 4 of the large shock absorbing member l. The rear end smooth surface of the vertical surface portion 11 is in close contact with the front end smooth surface of the large shock absorbing member 1.
The stud bolts 3 of the intermediate frame 10 are fitted into the mounting holes of the front end flange 4 of the intermediate frame 10, and are firmly attached to the large shock absorbing member by the nuts 4 screwed onto the bolts 13.
また、受衝板１５も、［型断面形状を有する一体の鋼製
部材で、垂直な辺の長さが中間フレームｌＯの垂直な辺
の長さより所定量長く、水平な辺の長さも略中間フレー
ム１０の水平な辺の長さと等しい短形をした垂直面部１
６とその上下端縁から後方に延びる水平フランジ部１７
を有している。垂直面部１６の前面には、ゴム又はゴム
状弾性体もしくは木材等から或る接舷船舶との接舷部材
１８が接着剤または取付けボルト等の取付け金具（図示
されず）によって取付けられている。水平フランジ部１
７の内面は平滑な面となり、中間フレームｌＯの水平フ
ランジ部１２と平行になっている。In addition, the impact receiving plate 15 is also an integral steel member having a [shaped cross-sectional shape], the length of the vertical side is longer than the length of the vertical side of the intermediate frame IO by a predetermined amount, and the length of the horizontal side is also approximately the same. Vertical surface part 1 having a rectangular shape equal to the length of the horizontal side of the frame 10
6 and a horizontal flange portion 17 extending rearward from its upper and lower edges.
have. On the front surface of the vertical surface portion 16, a joining member 18 made of rubber or a rubber-like elastic material, wood, or the like for connecting to a ship to come alongside is attached using an adhesive or attachment fittings (not shown) such as attachment bolts. Horizontal flange part 1
The inner surface of 7 is a smooth surface, and is parallel to the horizontal flange portion 12 of the intermediate frame IO.
さらに小型緩衝部材２０は第３図に図示されたように、
中実垂直円柱形をしたゴムまたはゴム状の弾性本体２１
の両端縁部には円板状取付け板２２、２３が接着剤また
は焼付け等により一体に固着されている．
さらにまた中間フレーム１０の垂直面部１１の前面と受
衝板１５の垂直面部１６の後面とは所定の距離ｄとなる
ように、中間フレーム１０の水平フランジ１２の外面に
小型緩衝材２０の取付け板２２が図示されない取付け金
具または接着剤で一体に固着されるとともに、受衝板１
５の水平フランジ部１７の内面に小型緩衝材２０の取付
け板２３が同様に一体に固着されている。Furthermore, the small shock absorbing member 20, as shown in FIG.
Rubber or rubber-like elastic body 21 in the shape of a solid vertical cylinder
Disk-shaped mounting plates 22 and 23 are integrally fixed to both end edges of the frame by adhesive or baking. Furthermore, a small shock absorbing material 20 is attached to the outer surface of the horizontal flange 12 of the intermediate frame 10 so that there is a predetermined distance d between the front surface of the vertical surface section 11 of the intermediate frame 10 and the rear surface of the vertical surface section 16 of the impact receiving plate 15. 22 are fixed together with mounting hardware or adhesive (not shown), and the impact receiving plate 1
A mounting plate 23 for a small cushioning material 20 is similarly fixed integrally to the inner surface of the horizontal flange portion 17 of 5.
次に本実施例の作用について第４図図示された反力一変
形曲線に従い説明する。Next, the operation of this embodiment will be explained according to the reaction force-deformation curve shown in FIG.
本実施例における防舷装置は上記の通り構威されている
ために、小型船舶が接岸すると、その動的荷重は受衝板
１５を介して小型緩衝部材２０に伝えられ、該小型緩衝
部材２０は反力を増大させながら変形して接舷小型船舶
の運動エネルギーを吸収し、その変形量がａに達した時
に該船舶の運動を停止させる。その時の反力はＰａであ
り、吸収エネルギーの量は略面積０−ａ−Ｐａ−０と等
しくなる。Since the fender in this embodiment is configured as described above, when a small boat approaches the berth, its dynamic load is transmitted to the small shock absorbing member 20 via the impact receiving plate 15, and the small shock absorbing member 20 deforms while increasing the reaction force and absorbs the kinetic energy of the small ship alongside, and when the amount of deformation reaches a, the movement of the ship is stopped. The reaction force at that time is Pa, and the amount of absorbed energy is approximately equal to the area 0-a-Pa-0.
（大型緩衝部材ｌの変形は少ないのでその吸収エネルギ
ーは無視してもよい。）
次に大型船舶が接岸すると、その動的荷重は大きいので
小型緩衝部材２０の設定変形量の範囲ではその運動エネ
ルギーを吸収することができず、小型緩衝部材２０の変
形がその許容変形量に達する以前に、受衝板１５の垂直
面部ｌ６の後面が中間フレーム１０の垂直面部１１の前
面に当接し、小型緩衝部材２０の変形はｂで停止し、反
力ｐｂとなる。それ以降は大型緩衝部材ｌの変形によっ
て発生する反力が直接中間フレーム１０および受衝板１
５の当接面を通じて接舷大型船舶に作用し、大型緩衝材
はさらに反力を発生しながら変形して該船舶の運動エネ
ルギーを吸収し、その変形がＣに達した時に同船舶の運
動を停止させる。その時の反力はＰｃであり、吸収エネ
ルギーの量は略面積０−ｃ−Ｐｃ−０に等しくなる。（
反力がｐｂに達するまでの大型緩衝部材１の変形は少な
いのでその吸収エネルギーは無視してもよい．）
次いで、大型緩衝部材１の変形によって生じた反力によ
って、前記船舶はパースとは反対のの方向に付勢されて
徐々に移動し、それにつれて大型緩衝部材ｌは変形を回
復しなから反力を減じ、その反力が変形したまま停止し
ている小型緩衝部材２０の反力と同じｐｂになると、小
型緩衝部材２０もその変形を回復しなから反力を失って
両緩衝部材ｌ、２０共に変形を復元し、これに伴い、受
衝板１５と中間フレーム１０も元の距離ｄに離間して、
当核防舷装置の緩衝作用の１サイクルは完結する。(Since the deformation of the large buffer member 1 is small, its absorbed energy can be ignored.) Next, when a large ship approaches the berth, its dynamic load is large, so its kinetic energy is within the set deformation amount of the small buffer member 20. Before the deformation of the small shock absorber 20 reaches its allowable deformation amount, the rear surface of the vertical surface portion l6 of the impact receiving plate 15 comes into contact with the front surface of the vertical surface portion 11 of the intermediate frame 10, and the small shock absorber The deformation of the member 20 stops at point b, resulting in a reaction force pb. After that, the reaction force generated by the deformation of the large shock absorbing member l is directly applied to the intermediate frame 10 and the impact receiving plate 1.
The large cushioning material acts on the large ship alongside the ship through the contact surface of 5, and the large buffer material further deforms while generating a reaction force and absorbs the kinetic energy of the ship, and when the deformation reaches C, it stops the movement of the ship. make it stop. The reaction force at that time is Pc, and the amount of absorbed energy is approximately equal to the area 0-c-Pc-0. (
Since the deformation of the large shock absorbing member 1 until the reaction force reaches pb is small, the absorbed energy can be ignored. ) Next, due to the reaction force generated by the deformation of the large shock absorbing member 1, the ship is urged in a direction opposite to the perspective and gradually moves, and as the large shock absorbing member 1 does not recover its deformation, it reacts. When the force is reduced and the reaction force becomes the same pb as the reaction force of the small shock absorber 20 which is stopped and deformed, the small shock absorber 20 also loses its reaction force without recovering its deformation and both shock absorbers l, 20, the deformation is restored, and accordingly, the impact plate 15 and the intermediate frame 10 are also separated to the original distance d,
One cycle of the buffering action of this nuclear fender is completed.
反復する前記接舷船舶の運動はは急激に減衰するので、
２サイクル目以降の船舶の運動を考慮する必要はない．
第１の実施例においては、小型緩衝部材２ｏは剪断引っ
張り応力を受け、その変形によって発生する反力を緩衝
に利用したが、第７図に図示された第２の実施例のよう
に、小型緩衝部材２ｏの中心線２４を大型緩衝部材１の
中心線２と平行に指向し、中間フレーム１０の水平フラ
ンジ部ｌ２の後端に小型緩衝部材２０の受圧部２５と、
受衝板１５の水平フランジ部ｌ７の後端に押圧部２６と
を設けて、小型緩衝部材２０の両端取付け板２２、２３
を上記押圧部２６と受圧部２５に取付け、小型緩衝部材
２ｏを圧縮変形させるようにしても良い．上記の取付け
方法及び作用については第１の実施例と同一のため詳述
しない．この場合受圧部２５の補強のため、装置が若干
大型になる．
また上記実施例では、小型緩衝部材２ｏを上下に１対と
したが、一対に限るものではなく、小型緩街部材２０の
合力の作用線が、大型緩衝部材１の中心線２を通るよう
にすれば、複数対設けても良い。The repeated motion of the ship alongside is rapidly attenuated, so
There is no need to consider the ship's motion after the second cycle. In the first embodiment, the small shock absorbing member 2o was subjected to shear tensile stress, and the reaction force generated by the deformation was used for buffering, but as in the second embodiment illustrated in FIG. The center line 24 of the buffer member 2o is oriented parallel to the center line 2 of the large buffer member 1, and the pressure receiving portion 25 of the small buffer member 20 is attached to the rear end of the horizontal flange portion l2 of the intermediate frame 10.
A pressing portion 26 is provided at the rear end of the horizontal flange portion l7 of the impact receiving plate 15, and both end mounting plates 22, 23 of the small shock absorbing member 20 are
may be attached to the pressing portion 26 and the pressure receiving portion 25 to compress and deform the small shock absorbing member 2o. The above mounting method and operation are the same as in the first embodiment, so they will not be described in detail. In this case, the pressure receiving part 25 is reinforced, so the device becomes slightly larger. Further, in the above embodiment, the small shock absorbing members 2o are arranged in one pair on the upper and lower sides, but the number is not limited to one pair. If so, a plurality of pairs may be provided.
さらに、実施例では大型緩衝部材ｌの本体には円筒厚内
状のものを、小型緩衝部材２０には７円柱中実状のもの
を用いたが、これらの形状に限るものではなく、大型緩
衝部材と小型緩衝部材を組み合わせて前述の作用を行わ
せるものであれば良い。Further, in the embodiment, the main body of the large shock absorbing member 1 is a thick inner cylinder, and the small shock absorbing member 20 is a solid shape of 7 cylinders, but the shape is not limited to these. Any combination of a small shock absorbing member and a small shock absorbing member may be used as long as the above-mentioned effect can be achieved.
第１図は第１の実施例の構造の概略を示す縦断面図、第
２図は第ｌの実施例の荷重、変位曲線および吸収エネル
ギーを説明する図面、第３図は第１実施例の大型緩衝部
材の単体の縦断図面、第４図は同大型緩衝部材の荷重一
変形特性曲線、第５図は第１実施例の小型緩衝部材の単
体の縦断図面、第６図は一対の同小型緩衝部材の荷重一
変形特性曲線、第７図は第２の実施例の概略を示す縦断
面図である。
ｌ・・・大型緩衝部材、２・・・同部材の中心線、３・
・・厚肉円筒部、４・・・前端フランジ部、５・・・後
端フランジ部、６・・・岸壁、７・・・アンカーボルト
、８・・・ナット、１０・・・中間フレーム、１１・・
・垂直面部、ｌ２・・・水平フランジ部、ｌ３・・・植
込みボルト、１４・・・ナット、ｌ５・・・受衝板、１
６−・・垂直面部、１７・・・水平フランジ部、ｌ８・
・・接舷部材、２０・・・小型緩衝部材、２ｌ・・・本
体、２２、２３・・・取付け板、２４・・・中心線、２
５・・・受圧部、２６・・・押圧部ゆFig. 1 is a vertical cross-sectional view showing the outline of the structure of the first embodiment, Fig. 2 is a drawing explaining the load, displacement curve, and absorbed energy of the first embodiment, and Fig. 3 is a diagram showing the structure of the first embodiment. Figure 4 is a longitudinal cross-sectional view of a single large shock absorbing member, Figure 4 is a load-deformation characteristic curve of the same large shock absorber, Figure 5 is a longitudinal cross-sectional view of a single small shock absorber of the first embodiment, and Figure 6 is a pair of the same small shock absorbers. FIG. 7 is a vertical sectional view schematically showing the load-deformation characteristic curve of the cushioning member in the second embodiment. l... Large buffer member, 2... Center line of the same member, 3...
...Thick walled cylindrical part, 4... Front end flange part, 5... Rear end flange part, 6... Quay wall, 7... Anchor bolt, 8... Nut, 10... Intermediate frame, 11...
・Vertical surface part, l2... horizontal flange part, l3... stud bolt, 14... nut, l5... impact plate, 1
6-... Vertical surface part, 17... Horizontal flange part, l8.
...Flanking member, 20...Small buffer member, 2l...Main body, 22, 23...Mounting plate, 24...Center line, 2
5...Pressure receiving part, 26...Pressing part
Claims (1)
舷材等の緩衝装置において、少なくとも一方に岸壁等の
構造物への取付け部を有する弾性大型緩衝部材と、該大
型緩衝部材の前面に取付けられた中間フレームと、該中
間フレームの前面に前後の移動を許して配設された受衝
フレームと、前記中間フレームと受衝フレームの間にこ
れらを弾性的に接続する弾性小型緩衝部材とより成り、
前記小型緩衝部材のバネ定数が前記大型緩衝部材のバネ
定数より小さいことを特徴とする船舶等の防舷装置。In a shock absorbing device such as a fender that is attached to a structure such as a quay that brings a floating object such as a ship alongside, an elastic large shock absorbing member having an attachment portion to the structure such as a quay on at least one side, and an intermediate frame attached to the front surface; an impact receiving frame disposed on the front surface of the intermediate frame to allow movement back and forth; and an elastic small buffer that elastically connects these between the intermediate frame and the impact receiving frame. Consists of parts,
A fender for a ship or the like, wherein a spring constant of the small buffer member is smaller than a spring constant of the large buffer member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1154431A JP2780048B2 (en) | 1989-06-19 | 1989-06-19 | Fenders for ships, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1154431A JP2780048B2 (en) | 1989-06-19 | 1989-06-19 | Fenders for ships, etc. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0321710A true JPH0321710A (en) | 1991-01-30 |
| JP2780048B2 JP2780048B2 (en) | 1998-07-23 |
Family
ID=15584034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1154431A Expired - Fee Related JP2780048B2 (en) | 1989-06-19 | 1989-06-19 | Fenders for ships, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2780048B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355986C (en) * | 2005-11-24 | 2007-12-19 | 中国人民解放军理工大学工程兵工程学院 | Flexible and floating type ship collision prevention system |
| EP2626172A2 (en) | 2012-02-13 | 2013-08-14 | Forever Co., Ltd. | Kitchen knife with sharpener |
| CN112431169A (en) * | 2020-11-27 | 2021-03-02 | 资溪县纯净文化旅游运营有限公司 | Drift boat buffering dock for stream drifting |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167015A (en) * | 1980-05-29 | 1981-12-22 | Mitsubishi Heavy Ind Ltd | Fender |
-
1989
- 1989-06-19 JP JP1154431A patent/JP2780048B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167015A (en) * | 1980-05-29 | 1981-12-22 | Mitsubishi Heavy Ind Ltd | Fender |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355986C (en) * | 2005-11-24 | 2007-12-19 | 中国人民解放军理工大学工程兵工程学院 | Flexible and floating type ship collision prevention system |
| EP2626172A2 (en) | 2012-02-13 | 2013-08-14 | Forever Co., Ltd. | Kitchen knife with sharpener |
| CN112431169A (en) * | 2020-11-27 | 2021-03-02 | 资溪县纯净文化旅游运营有限公司 | Drift boat buffering dock for stream drifting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2780048B2 (en) | 1998-07-23 |
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