US3507123A - Fender for dock wall - Google Patents

Fender for dock wall Download PDF

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Publication number
US3507123A
US3507123A US706884A US3507123DA US3507123A US 3507123 A US3507123 A US 3507123A US 706884 A US706884 A US 706884A US 3507123D A US3507123D A US 3507123DA US 3507123 A US3507123 A US 3507123A
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US
United States
Prior art keywords
fender
reaction
mooring
hull
base
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 - Lifetime
Application number
US706884A
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English (en)
Inventor
Misao Miura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEIBU GOMU KAGUKU KK
Original Assignee
SEIBU GOMU KAGUKU KK
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Publication of US3507123A publication Critical patent/US3507123A/en
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Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/42—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing
    • F16F1/422—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by the mode of stressing the stressing resulting in flexion of the spring
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
    • E02B3/26—Fenders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2236/00—Mode of stressing of basic spring or damper elements or devices incorporating such elements
    • F16F2236/02—Mode of stressing of basic spring or damper elements or devices incorporating such elements the stressing resulting in flexion of the spring
    • 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

Definitions

  • FIG. 2 *April 21, 1970 Nuus/ao MIURA 3,507,123'- FENDER FOR ⁇ DOCK WALL Filed Feb. 20, 196B FIG. .1. FIG. 2;
  • a flexible hollow tubular fender for a dock wall having a base and a top buffer, and an intermediate resilient block which is ho-llow and has lateral sides which are each of a non-uniform cross-section.
  • the present invention relates to a fender to be fitted to a quay or dock wall for the purpose of absorbing the dynamic energy of a ship on being moored in a port ⁇ so that it can be safely moored without damaging the hull or the quay wall structure.
  • the contact area between the rubber elements and the hull is small. This results in the development of a large compression stress in the contact area between the outside plating of the hull and the fender, which causes hull damage and may lead to an accident.
  • the compression stress developed on the part of the surface of the hull in direct contact with the conventional fender is equal to about 60-150 metric tons per square meter, whereas the critical loading Strength of the outside plating of the hull is about 30u40 metric tons per square meter.
  • the outside plating of the hull is often subjected to damage.
  • the present practice now used as a countermeasure for this condition is to provide combined wooden boards over the rubber fender to avoid direct contact of the outside plating of the hull with the rubber fender, or to provide driving -piles and erecting a concrete wall on the heads thereof.
  • the magnitude of the reaction depends to a large extent on the sectional area of the members constituting the mooring structures. The smaller the reaction, the more economical will be the structure required.
  • the structural designing of mooring facilities can most reasonably be made in consideration of the magnitudes of the mooring speeds and their frequency distribution.
  • the mooring speed which has been taken as a design factor will not always be the one met in practice, and a-ship will more often approach the quay at a considerably lower speed than that. It would be appropriate for designing to assume the reaction due to a higher mooring speed of less frequency as a short-term load, and provide acertain margin for the allowable stress of structural members for this load, while designing an allowable stress under a long-term load for the reaction due to a lower mooring speed of more frequent occurrence.
  • Such a designing method would give economical sections of the structural'members, but the actual designing in practice is influenced by the characteristics of a fender. For instance, take the case of a circular fender in which the relation between the ymagnitude of applied force of reaction and the involved strain gives a linear variation. In such a fender there is a desirable tendency that the applied force of reaction is small in the range of small energy absorption and the force of reaction increases with an increase in the absorbed energy.
  • this type of fender has drawbacks in that the total energy absorption is too small and a firm fitting is difficult to attain.
  • FIGURE l shows a side elevation of a fender according to this present invention
  • FIGURE 2 shows a side view of said fender
  • FIGURE 3 shows an enlarged cross-section of FIG. 1 along the line III-III;
  • FIGURE 4 shows an enlarged section of FIG. 1 along the line IV-IV;
  • FIGURE 5 shows a comparison of characteristic curves to illustrate the relation between the load and the deflection against the fenders.
  • FIGURE 6 shows a modified form of the fender in which outer faces of the fender are concave instead of fiat.
  • the main body or principal part 1 of the fender is an approximately rectangular tube with an approximately elliptical bore 2 running longitudinally through its center and is preferably of rubber or other resilient material.
  • the base 3 of said main body or principal part 1 has a core plate 4 of iron or other material embedded therein. It would be desirable to extend the base 3 outside of the Wall of the main body so that said fender base may be easy to fix to the ⁇ quay wall as by bolts 12.
  • the transverse beams 7 are inserted to be higher than the longitudinal beams 6.
  • the beams of core plate 8 to be embedded in said buffer 5 are intended to prevent a deflection of core plate 8 and to distribute the applied load in that area. Therefore said pieces of wood 9 may be covered with rubber.
  • the side faces of the portion of the fender between the base 3 and the buifer 5, and the outside fender face is flat and perpendicular to the base, and the inside surface thereof is warped outward and provides a supporting structure 10, 10.
  • FIGURE 6 shows a modied form of the'fender in which the principal part 1 is a substantially rectangular parallelopiped having a central bore 14 with internal flat Walls 16 andv with two opposite outside faces 15 which are concave symmetrically inward about a transverse axis midway between the base and the buffer, and are substantially of semi-elliptical contour.
  • this fender develops a deformation at first in its thinnest center portion 13 of the supporting rubber structure, just as would be developed in a circular' fender, with the relation between the reaction and energy absorption being similar to that in a circular fender.
  • the fender of this present invention combines the performances of both the known circular and the V-shaped fenders. That is, the reaction force vs. energy absorption relation of the fender of this present invention is that of a circular fender in the initial stage with 0-50% applied strain and that of a V-shaped fender in the later stage with 50-100% applied strain.
  • a dock fender for absorbing the impact of a moor- A ing ship, a principal part substantially of the shap ⁇ e of a rectangular parallelopiped and being provided with a central interior hollow space, a base at one end of said p'rincipal part formed integrally with said principal part, a buffer portion at ythe opposite end of said principal part formed integrally with said principal part, said principal part, said base and said buffer portion being formedof resilient material, the lateral portions of said principal part extending between said base and said buffer portion, having two inner opposite faces and two outer opposite faces and being of a non-uniform cross-section symmetrically about the plane midway between said base and said biiifer portion, either two opposite faces comprising respectively arcs of an elliptical bore the long axis of which extends between said base and said buffer portion and the other two opposite faces being flat, and a reinforcing plate enbedded in said buffer portion.
  • a fender according to claim 1 wherein said reinforcing plate has an outwardly projecting grid-form consolidation of longitudinal beams and transverse beams, said grid-form consolidation being provided with protecting members.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • Vibration Dampers (AREA)
  • Building Environments (AREA)
  • Bridges Or Land Bridges (AREA)
  • Road Paving Structures (AREA)
US706884A 1967-09-06 1968-02-20 Fender for dock wall Expired - Lifetime US3507123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5693867 1967-09-06

Publications (1)

Publication Number Publication Date
US3507123A true US3507123A (en) 1970-04-21

Family

ID=13041454

Family Applications (1)

Application Number Title Priority Date Filing Date
US706884A Expired - Lifetime US3507123A (en) 1967-09-06 1968-02-20 Fender for dock wall

Country Status (5)

Country Link
US (1) US3507123A (enrdf_load_stackoverflow)
DE (1) DE1784679C2 (enrdf_load_stackoverflow)
FR (1) FR1579784A (enrdf_load_stackoverflow)
GB (1) GB1189737A (enrdf_load_stackoverflow)
NL (1) NL159453B (enrdf_load_stackoverflow)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600896A (en) * 1968-10-29 1971-08-24 Bridgestone Tire Co Ltd Marine fender assembly
US3690280A (en) * 1970-09-14 1972-09-12 Seibu Gomukogaku Kogyo Kk Fender for large ship
US3694018A (en) * 1970-07-22 1972-09-26 Gen Motors Corp Elastomeric impact energy dissipator
US3708988A (en) * 1969-09-18 1973-01-09 Siebu Gomu Kagaku K K Fender assembly
US3763653A (en) * 1971-09-08 1973-10-09 Byron Jackson Inc Cushioned dock fender structure and shear type cushion member
US3784181A (en) * 1972-05-05 1974-01-08 Gen Tire & Rubber Co Energy absorbing buckling box
US3788082A (en) * 1969-05-08 1974-01-29 Seibu Gomu Kagaku Kk Assembled fender unit
US3823682A (en) * 1972-07-24 1974-07-16 S Jochimski Boat fender and brake
US3858925A (en) * 1972-03-02 1975-01-07 Dunlop Ltd Elastomeric mountings
FR2402036A1 (fr) * 1977-08-30 1979-03-30 Bridgestone Tire Co Ltd Pare-chocs marin pour paroi de quai ou d'appontement
US4258641A (en) * 1977-11-17 1981-03-31 Bridgestone Tire Company Limited Marine fender
US4285616A (en) * 1979-07-23 1981-08-25 Jonathan Evetts Roll compression member
US4751891A (en) * 1986-11-17 1988-06-21 Wilson John T Bow protector
US5217184A (en) * 1991-05-18 1993-06-08 Deutsche Aerospace Airbus Gmbh Retaining wall for holding cargo in an aircraft cabin
US6309140B1 (en) 1999-09-28 2001-10-30 Svedala Industries, Inc. Fender system
US6755402B2 (en) * 2001-02-08 2004-06-29 Lockheed Martin Corporation Isorail elastomer isolator
US20080156310A1 (en) * 2006-12-28 2008-07-03 Leven Industries Oscillation transfer plate for dampening noise and vibration
CN105299132A (zh) * 2015-10-15 2016-02-03 中国电子工程设计院 一种微振动主动隔振装置安装连接件及其安装方法
CN106661853A (zh) * 2014-06-17 2017-05-10 柴田工业株式会社 护舷材、护舷材的安装方法及护舷材的制造方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5255836Y2 (enrdf_load_stackoverflow) * 1972-06-23 1977-12-16
GB2046400B (en) * 1979-04-10 1983-03-09 Silentbloc Flexible mountings
AU538446B2 (en) * 1980-10-27 1984-08-16 Bridgestone Tire Co. Ltd. Marine fender for fitting to quays

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB945456A (en) * 1961-09-12 1964-01-02 Tokyo Gomu Kabushiki Kaisha Improvements in or relating to ship and pier fenders
CA724048A (en) * 1965-12-21 W. H. Miner Shock attenuating devices
GB1098276A (en) * 1966-05-26 1968-01-10 Seibu Gomu Kagaku Kk Ship's fender

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1369440A (fr) * 1963-06-28 1964-08-14 Pneumatiques, Caoutchouc Manufacture Et Plastiques Kleber-Colombes Défense d'accostage
US3172268A (en) * 1964-03-30 1965-03-09 Lord Mfg Co Dock fender

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA724048A (en) * 1965-12-21 W. H. Miner Shock attenuating devices
GB945456A (en) * 1961-09-12 1964-01-02 Tokyo Gomu Kabushiki Kaisha Improvements in or relating to ship and pier fenders
GB1098276A (en) * 1966-05-26 1968-01-10 Seibu Gomu Kagaku Kk Ship's fender

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600896A (en) * 1968-10-29 1971-08-24 Bridgestone Tire Co Ltd Marine fender assembly
US3788082A (en) * 1969-05-08 1974-01-29 Seibu Gomu Kagaku Kk Assembled fender unit
US3708988A (en) * 1969-09-18 1973-01-09 Siebu Gomu Kagaku K K Fender assembly
US3694018A (en) * 1970-07-22 1972-09-26 Gen Motors Corp Elastomeric impact energy dissipator
US3690280A (en) * 1970-09-14 1972-09-12 Seibu Gomukogaku Kogyo Kk Fender for large ship
US3763653A (en) * 1971-09-08 1973-10-09 Byron Jackson Inc Cushioned dock fender structure and shear type cushion member
US3858925A (en) * 1972-03-02 1975-01-07 Dunlop Ltd Elastomeric mountings
US3784181A (en) * 1972-05-05 1974-01-08 Gen Tire & Rubber Co Energy absorbing buckling box
US3823682A (en) * 1972-07-24 1974-07-16 S Jochimski Boat fender and brake
FR2402036A1 (fr) * 1977-08-30 1979-03-30 Bridgestone Tire Co Ltd Pare-chocs marin pour paroi de quai ou d'appontement
US4258641A (en) * 1977-11-17 1981-03-31 Bridgestone Tire Company Limited Marine fender
US4285616A (en) * 1979-07-23 1981-08-25 Jonathan Evetts Roll compression member
US4751891A (en) * 1986-11-17 1988-06-21 Wilson John T Bow protector
US5217184A (en) * 1991-05-18 1993-06-08 Deutsche Aerospace Airbus Gmbh Retaining wall for holding cargo in an aircraft cabin
US6309140B1 (en) 1999-09-28 2001-10-30 Svedala Industries, Inc. Fender system
US6551010B1 (en) 1999-09-28 2003-04-22 Metso Minerals Industries, Inc. Energy absorbing impact system
US6692191B2 (en) 1999-09-28 2004-02-17 Metso Minerals Industries, Inc. Fender system
US6755402B2 (en) * 2001-02-08 2004-06-29 Lockheed Martin Corporation Isorail elastomer isolator
US20080156310A1 (en) * 2006-12-28 2008-07-03 Leven Industries Oscillation transfer plate for dampening noise and vibration
US8141548B2 (en) * 2006-12-28 2012-03-27 Leven Industries Oscillation transfer plate for dampening noise and vibration
CN106661853A (zh) * 2014-06-17 2017-05-10 柴田工业株式会社 护舷材、护舷材的安装方法及护舷材的制造方法
EP3159450A4 (en) * 2014-06-17 2018-02-14 Shibata Industrial Co., Ltd. Fender, fender mounting method, and fender manufacturing method
CN106661853B (zh) * 2014-06-17 2019-10-29 柴田工业株式会社 护舷材、护舷材的安装方法及护舷材的制造方法
CN105299132A (zh) * 2015-10-15 2016-02-03 中国电子工程设计院 一种微振动主动隔振装置安装连接件及其安装方法
CN105299132B (zh) * 2015-10-15 2019-05-17 中国电子工程设计院 一种微振动主动隔振装置安装连接件及其安装方法

Also Published As

Publication number Publication date
DE1784679C2 (de) 1982-03-11
NL159453B (nl) 1979-02-15
DE1784679A1 (de) 1971-10-07
GB1189737A (en) 1970-04-29
FR1579784A (enrdf_load_stackoverflow) 1969-08-29
NL6812757A (enrdf_load_stackoverflow) 1969-03-10

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