WO2014073618A1 - Fender and impact-bearing member thereof - Google Patents

Fender and impact-bearing member thereof Download PDF

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Publication number
WO2014073618A1
WO2014073618A1 PCT/JP2013/080153 JP2013080153W WO2014073618A1 WO 2014073618 A1 WO2014073618 A1 WO 2014073618A1 JP 2013080153 W JP2013080153 W JP 2013080153W WO 2014073618 A1 WO2014073618 A1 WO 2014073618A1
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WO
WIPO (PCT)
Prior art keywords
rear plate
receiving member
fender
section
impact receiving
Prior art date
Application number
PCT/JP2013/080153
Other languages
French (fr)
Japanese (ja)
Inventor
章之 荒井
安井　基浩
謙太郎 清水
Original Assignee
株式会社ブリヂストン
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Priority to CN201380058121.5A priority Critical patent/CN104769186B/en
Priority to AU2013342498A priority patent/AU2013342498B2/en
Publication of WO2014073618A1 publication Critical patent/WO2014073618A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/02—Fenders integral with waterborne vessels or specially adapted therefor, e.g. fenders forming part of the hull or incorporated in the hull; Rubbing-strakes
    • 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
    • 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

  • the present invention relates to an impact receiving member installed on a front surface portion of a fender body attached to a quay or the like.
  • the present invention also relates to a fender having the impact receiving member.
  • the rear of the impact receiving member refers to the fender main body side
  • the front refers to the opposite side of the fender main body.
  • the fender is generally provided with a fender main body made of a cushioning material such as rubber, and an impact receiving member installed on the front surface of the fender material main body (for example, Japanese Patent Application Laid-Open No. 11-43921). .
  • the impact receiving member of Japanese Patent Application Laid-Open No. 11-43921 includes a rear plate located on the fender body side, a front plate facing the rear plate, a connecting piece connecting the front plate and the rear plate, And a mount portion provided on the rear surface of the rear plate. The impact receiving member is connected to the fender main body through the mount portion.
  • the connecting piece includes a plurality of first direction extending portions extending in one direction along the rear plate and the front plate, and a direction orthogonal to the first direction extending portion.
  • a plurality of second direction extending portions extending, and these are connected to each other in a lattice shape.
  • the mount portion is a plate extending along the rear surface of the rear plate, and penetrates the mount portion from the front side of the impact receiving member. Then, the bolt is tightened into the fender body, whereby the impact receiving member is connected to the fender body through the mount portion.
  • the mount portion is connected to the pedestal portion extending rearward from the rear plate and the rear end side of the pedestal portion, and is attached to the front end surface of the fender body. And a mounting seat portion arranged along.
  • the pedestal portion is cylindrical, and is arranged with its axial center direction as the front-rear direction, its front end portion is coupled to the rear surface of the rear plate, and the rear end portion is coupled to the front surface of the mounting seat portion.
  • the outer diameter of the mounting seat portion in the direction orthogonal to the axial center line direction of the pedestal portion is larger than the outer diameter of the pedestal portion.
  • a bolt insertion hole that penetrates the mounting seat portion in the front-rear direction is provided in a portion of the mounting seat portion on the outer peripheral side of the coupling portion with the base portion.
  • the connecting pieces inside the impact receiving member are arranged in a grid pattern regardless of the shape of the mount portion coupled to the rear plate of the impact receiving member.
  • an impact receiving member that can more efficiently disperse the stress applied to the rear plate from the mount portion when the member receives a load from the front by the connecting piece.
  • the present invention relates to an impact receiving member that can more efficiently disperse the stress applied to the rear plate from the mount portion when the impact receiving member receives a load from the front, and the impact receiving member is a fender.
  • An object of the present invention is to provide a fender provided on the front surface of the main body.
  • a first aspect of the present invention is an impact receiving member installed on a front surface portion of a fender main body, a rear plate positioned on the fender main body side, a front plate facing the rear plate,
  • a receiving member comprising a connecting piece connecting a front plate and a rear plate, and a mount portion having a rear plate connecting portion connected to the rear surface of the rear plate, a rear end cross section of the connecting piece, and the rear plate
  • the front end cross section of the coupling portion is projected onto a common projection plane that is substantially orthogonal to the axial center line of the fender body, the rear plate coupling portion of the rear end cross section of the connecting piece within the projection plane
  • the area of the portion overlapping the front end cross section is 25% or more of the total area of the front end cross section of the rear plate coupling portion.
  • the rear end section of the connecting piece overlaps substantially the entire front end section of the rear plate coupling portion in the projection plane.
  • At least a part of the rear plate coupling portion and at least a part of the connecting piece present at a front position thereof are along the rear plate.
  • the rear plate extends in a radial direction from a predetermined position.
  • the mount portion has a mounting seat portion that is connected to a rear end of the rear plate coupling portion.
  • the mount portion includes a shaft-like portion that extends rearward from the rear surface plate and has a rear end continuous to the mounting seat portion. At least a part of the coupling portion extends radially from the shaft-like portion along the rear surface of the rear plate.
  • the sixth aspect of the present invention is that, in the fifth aspect, the shaft-like portion penetrates the rear plate and connects the front plate and the mounting seat portion.
  • a flange portion that overlaps a front surface of the rear plate is provided at a rear end of the connecting piece.
  • the impact receiving member is installed on the front surface of the fender body.
  • the receiving member has a common structure in which the rear end cross-section of the connecting piece and the front end cross-section of the rear plate coupling portion of the mount portion are substantially orthogonal to the shaft center line of the fender body.
  • the area of the portion of the rear end cross section of the connecting piece that overlaps the front end cross section of the rear plate coupling portion in the projection plane is the entire front end cross section of the rear plate coupling portion. It is 25% or more of the area. Therefore, when the impact receiving member receives a load from the front, the stress applied from the rear plate coupling portion to the rear plate can be efficiently dispersed by the connecting piece. Thereby, the required strength of each part of the impact receiving member can be set relatively low.
  • the axial center line of the fender main body means an axial line in the front-rear direction passing through the centroid positions of the front end face and the rear end face of the fender main body.
  • the axis of the fender main body substantially matches the axis of the cylinder.
  • substantially orthogonal to the axis of the fender main body means that the orthogonal direction (normal direction) of the projection surface may be slightly inclined (preferably 5 ° or less) with respect to the axis of the fender main body. Show.
  • the rear end cross section of the connecting piece overlaps substantially the entire front end cross section of the rear plate coupling portion in the projection plane.
  • bond part means 50% or more of this front-end cross section, Preferably it is 75% or more.
  • the rear surface plate coupling portion and the connecting piece existing at the front position thereof correspond to a predetermined position of the rear surface plate along the rear surface plate (for example, the axial center position of the fender main body).
  • the stress applied to the rear plate from the rear plate coupling portion when the impact receiving member receives a load from the front is radiated along the rear plate coupling portion and the connecting piece. Therefore, the stress applied to the rear plate can be more efficiently dispersed.
  • the mounting portion is provided with the mounting seat portion where the rear end of the rear surface plate coupling portion is continuous, so that the rear end side of the rear surface plate coupling portion is protected via the mounting seat portion. It can be firmly connected to the material body. Further, since the rear end side of the rear plate coupling portion is supported by the mounting seat portion, the support member has a high support rigidity by the rear plate coupling portion.
  • the impact receiving member is also supported by the shaft-shaped portion by providing a shaft-shaped portion extending rearward from the rear plate and having the rear end connected to the mounting seat portion.
  • the impact receiving member receives a load from the front, the stress applied to the rear plate from the rear plate coupling portion is relieved. Then, by extending the rear plate coupling portion in a radial direction from the shaft-shaped portion, the stress of the rear plate relaxed by the shaft-shaped portion further spreads radially from the shaft-shaped portion along the rear plate coupling portion. Distributed. As a result, the required strength of each part of the impact receiving member can be set lower.
  • the shaft-like portion is formed by connecting the front plate and the mounting seat portion through the rear plate, so that the impact receiving member receives a load from the front.
  • the stress applied to the rear plate from the rear plate coupling portion can be further relaxed.
  • the seventh aspect of the present invention by providing the flange portion overlapping the front surface of the rear plate at the rear end of the connecting piece, the contact area between the rear end side of the connecting piece and the front surface of the rear plate is increased.
  • the bonding strength to the rear plate of the connecting piece is improved.
  • the rigidity of the rear plate is increased by this flange portion, the strength of the rear plate itself can be set relatively low in consideration of this.
  • the flange part is provided in the rear end of the connection piece, the rear end cross section of the connection piece projected on the projection surface may include the flange part, and does not include the flange part. It does not have to be.
  • the impact receiving member of the present invention since the impact receiving member of the present invention is installed on the front surface of the fender main body, the impact receiving member receives a load from the front.
  • the fender can be configured to efficiently disperse the stress applied to the rear plate from the rear plate coupling portion by the connecting piece.
  • the fender can be relatively light and low-cost as a whole.
  • the required strength of the fixing structure for fixing the fender to the fender installation surface such as a quay can be set relatively low.
  • FIG. 1A is a cross-sectional perspective view of a fender having an impact receiving member according to the embodiment, and shows a cross section taken along line IA-IA in FIG. 1D.
  • FIG. 1B is a perspective cross-sectional perspective view showing a state where the front plate of the impact receiving member is seen through in FIG. 1A.
  • 1C is a perspective view of a mount portion of the impact receiving member of FIG. 1A.
  • FIG. 1D is a front view of the ID portion (in the vicinity of the mounting portion coupling region of the rear plate of the impact receiving member) in FIG.
  • FIG. 1E is a cross-sectional view taken along the line IE-IE in FIG. 1D.
  • FIG. 1F is a sectional view taken along line IF-IF in FIG.
  • FIG. 2A is a partially transparent sectional perspective view of a fender having a receiving member according to a comparative example, showing a cross-section along the axial center line direction of the fender body and seeing through the front plate of the receiving member Shows the state.
  • FIG. 2B is a front view of the IIB portion of FIG. 2A (near the mounting portion coupling region of the rear plate of the impact receiving member).
  • 2C is a cross-sectional view taken along the line IIC-IIC in FIG. 2B.
  • FIG. 3A is a diagram illustrating a stress distribution of the rear plate in the example.
  • FIG. 3B is a diagram showing a stress distribution of the rear plate in the comparative example.
  • this invention is a fender of other types (
  • the present invention can also be applied to arch-shaped fenders.
  • the fender 1 includes a fender main body 2 attached to a fender installation surface (not shown) such as a quay, and an impact receiving member 10 provided on the front surface of the fender main body 2. .
  • the fender body 2 is made of a cushioning material such as rubber.
  • the fender main body 2 has a substantially cylindrical shape, and is arranged so that the end surface (rear end surface) on one end side in the axial center direction faces the fender material installation surface, such as a bolt.
  • the fixing means (not shown) is fixed to the fender mounting surface.
  • a mount portion 20 provided on the rear surface of the impact receiving member 10 is connected to the end surface (front end surface) on the other end side in the axial direction of the fender body 2.
  • the fender main body 2 has a tapered shape in which the inner diameter and the outer diameter become smaller toward the front end side.
  • An embedding member 3 made of a rigid material such as iron is embedded in the fender main body 2 along the front end surface thereof.
  • the embedding member 3 is provided with a plurality of female screw holes 4 (FIG. 1E) at predetermined intervals in the circumferential direction of the front end face of the fender body 2.
  • the impact receiving member 10 includes a rear plate 11 positioned on the fender body 2 side, a front plate 12 facing the rear plate 11, and the rear plate 11. And a front plate 12 and a connecting piece 14 connected to the rear surface of the rear plate 11.
  • the front plate 12 is disposed with a space forward from the rear plate 11.
  • the rear plate 11 constitutes the rear surface of the impact receiving member 10
  • the front plate 12 constitutes the front surface of the impact receiving member 10.
  • the peripheral portions of the rear plate 11 and the front plate 12 are connected by a side plate 13.
  • the side plate 13 makes the impact receiving member 10 more rigid and prevents seawater and the like from entering the impact receiving member 10.
  • the connecting piece 14 is arranged inside the impact receiving member 10 surrounded by the rear plate 11, the front plate 12 and the side plate 13.
  • the substantially central portion of the rear plate 11 is a mount portion coupling region 11a to which the mount portion 20 is coupled.
  • a pad (not shown) made of a buffer material such as an ultra high molecular weight polyethylene plate having a weight average molecular weight of 500,000 or more is attached to the front surface of the front plate 12. Details of the connecting piece 14 will be described later.
  • the mount portion 20 is connected to the pedestal portion 21 extending rearward from the rear plate 11 and the rear end side of the pedestal portion 21, and is mounted along the front end surface of the fender body 2. And a seat portion 22.
  • the pedestal portion 21 extends rearward from the rear plate 11, the rear end is arranged around the shaft-shaped portion 21 a, and the rear surface of the rear plate 11.
  • a plurality of rear plate coupling portions 21b coupled to each other.
  • the rear end of each rear plate coupling portion 21 b is also connected to the mounting seat portion 22.
  • the front end cross section of each rear plate coupling portion 21b is a cross section along the rear surface of the rear plate 11 of each rear plate coupling portion 21b. That is, in this embodiment, the front end surface (the end surface opposite to the mounting seat portion 22) of each rear plate coupling portion 21b in FIG. 1C corresponds to the front end cross section of the rear plate coupling portion in claim 1.
  • the shaft-shaped portion 21a is substantially cylindrical, and is disposed substantially coaxially with the fender main body 2 with the axial direction of the shaft being approximately the front-rear direction.
  • the shaft-like portion 21a is disposed at the front end side inside the impact receiving member 10, and is coupled to the rear surface of the front plate 12 by a coupling means such as welding.
  • the rear end side of the shaft-shaped portion 21 a extends to the outside and the rear of the impact receiving member 10 through an opening 11 b provided in a substantially central portion of the mount portion coupling region 11 a of the rear plate 11. That is, in this embodiment, the shaft-shaped portion 21 a is formed by connecting the front plate 12 and the mounting seat portion 22 through the rear plate 11.
  • the inner peripheral edge of the opening 11b is coupled to the outer peripheral surface of the middle portion of the shaft portion 21a in the axial center line direction by a coupling means such as welding.
  • the mounting seat portion 22 is substantially disc-shaped in this embodiment, and is disposed substantially concentrically with the shaft-shaped portion 21a.
  • the front surface is coupled to the rear end of the shaft-shaped portion 21a.
  • the outer diameter of the mounting seat portion 22 is larger than the outer diameter of the shaft-shaped portion 21a.
  • a plurality of bolt insertion holes 22a are provided at a predetermined interval in the circumferential direction at a portion of the mounting seat portion 22 on the outer peripheral side of the coupling portion with the shaft-shaped portion 21a. These bolt insertion holes 22 a are provided so as to overlap the respective female screw holes 4 of the embedding member 3.
  • the mounting seat portion 22 is disposed along the front end surface of the fender body 2, and the bolt 5 is tightened into each female screw hole 4 from the front side of the mounting seat portion 22 via each bolt insertion hole 22 a. As a result, it is connected to the front end face of the fender body 2.
  • the connection method to the fender main body 2 of the mount part 20 is not limited to this.
  • the rear plate coupling portion 21b extends in the radial direction from the shaft-shaped portion 21a along the rear surface of the rear plate 11.
  • a plurality of rear plate coupling portions 21b are provided at intervals in the circumferential direction of the shaft-shaped portion 21a.
  • the number of rear plate coupling portions 21b is preferably 3 to 24, particularly 6 to 12, more preferably 6 to 8, and between the rear plate coupling portions 21b and 21b adjacent to each other in the circumferential direction of the shaft-shaped portion 21a.
  • the opening angle ⁇ (FIG. 1C) is preferably 15 to 120 °, particularly preferably 30 to 60 °, and more preferably 45 to 60 °.
  • each rear plate coupling portion 21b is further disposed at a position spaced apart from each bolt insertion hole 22a by a predetermined distance in the circumferential direction from the viewpoint of workability of tightening each bolt 5.
  • rear plate coupling portions 21b are respectively arranged in the approximate middle between the bolt insertion holes 22a, 22a adjacent in the circumferential direction.
  • bond part 21b is not limited to this.
  • two or more rear plate coupling portions 21b may be disposed between the bolt insertion holes 22a and 22a adjacent in the circumferential direction.
  • each rear plate coupling portion 21b in the radial direction from the shaft-shaped portion 21a along the rear surface of the rear surface plate 11 (hereinafter sometimes simply referred to as the length of each rear plate coupling portion 21b).
  • the width of the portion on the outer peripheral side with respect to the connecting portion with the shaft-like portion 21a of the mounting seat portion 22 in the same direction is substantially equal.
  • bond part 21b is not limited to this.
  • each of the rear plate coupling portions 21b has a substantially rectangular plate shape, and the extending direction of the plate surface is a direction substantially orthogonal to the rear surface of the rear plate 11 and a substantially radial direction from the shaft-shaped portion 21a. It is disposed in a space between the rear plate 11 and the mounting seat portion 22 around the shaft portion 21a.
  • the end of each rear plate coupling portion 21b on the center side in the radial direction is coupled to the outer peripheral surface of the shaft-shaped portion 21a, and the rear end portion of each rear plate coupling portion 21b is connected to the shaft-shaped portion 21a of the mounting seat portion 22. It is connected to the front surface of the portion on the outer peripheral side with respect to the connecting portion.
  • the mount portion 20 may be one in which the shaft-like portion 21a, each rear plate coupling portion 21b, and the mounting seat portion 22 are integrally formed from the beginning, and at least a part of these is different from other portions. It may be formed separately and then combined and integrated by a connecting means such as welding.
  • the front end of each rear plate coupling portion 21b is coupled to the rear surface of the rear plate 11 by a coupling means such as welding.
  • the connecting piece 14 has a substantially band plate shape, and its plate surface is arranged in a direction substantially orthogonal to the front surface of the rear plate 11 and the rear surface of the front plate 12, and the rear end side is the front surface of the rear plate 11.
  • the front end side is coupled to the rear surface of the front plate 12 by welding or the like.
  • a flange portion 15 is formed on the rear end side of the connecting piece 14 so as to project sideways from the connecting piece 14 along the front surface of the rear plate 11. Since the flange portion 15 overlaps the front surface of the rear plate 11, the contact area between the rear end side of the connecting piece 14 and the front surface of the rear plate 11 is increased, so that the coupling strength to the rear plate 11 of the connecting piece 14 is improved. To do.
  • the strength of the rear plate 11 itself can be set to be relatively low in consideration of this.
  • a flange portion that protrudes laterally from the connection piece 14 along the rear surface of the front plate 12 may also be provided on the front end side of the connection piece 14.
  • the rear end cross section of the connecting piece 14 is a cross section of the connecting piece 14 along the front surface of the rear plate 11.
  • the rear end cross section of the connecting piece 14 may include the flange portion 15 or may not include the flange portion 15.
  • a portion of the connecting piece 14 disposed in the mount coupling region 11a of the rear plate 11 is a radially extending portion 14a extending radially from the peripheral edge of the opening 11b.
  • the radial extending portions 14a are provided in the same number as the rear plate coupling portions 21b of the mount portion 20, and are respectively disposed at positions in front of the respective rear plate coupling portions 21b with the rear plate 14 interposed therebetween. Yes.
  • the end of each radial extending portion 14a on the center side in the radial direction is coupled to the outer peripheral surface on the front end side of the shaft-shaped portion 21a disposed in the impact receiving member 10 by a coupling means such as welding.
  • each radial extending portion 14a and the front end cross section of each rear plate coupling portion 21b are projected onto a common projection plane that is substantially orthogonal to the axis of the fender body 2
  • the area of the portion of the rear end cross section of each radial extending portion 14a that overlaps the front end cross section of each rear plate coupling portion 21b is the front end cross section of the rear plate coupling portion 21b that overlaps each other.
  • the total area is 25% or more.
  • each radial extending portion 14a preferably overlaps substantially the entire front end cross section of each rear plate coupling portion 21b.
  • bond part 21b means 50% or more of this front end cross section, Preferably it is 75% or more.
  • the length in the radial direction from the opening 11b of each radial extending portion 14a is the length of each rear plate coupling portion 21b. It may be larger than the length.
  • the thickness of each radially extending portion 14a may be equal to or different from the thickness of each rear plate coupling portion 21b.
  • each radial extending portion 14a is larger than the length of the rear plate coupling portion 21b facing each other.
  • the front end side in the radial direction of the portion 14a extends to the outer peripheral side of the rear plate 11 from each rear plate coupling portion 21b.
  • the length of each radially extending portion 14a is preferably 0.5 to 5.0 times, particularly 1.0 to 3.0 times the length of the rear plate coupling portion 21b facing each other. Further, it is preferably 2.0 to 3.0 times.
  • Each of the radially extending portions 14a may extend to the outer peripheral side of the rear plate 11 (up to the side plate 13 at the longest) from the mount coupling region 11a.
  • the thickness of each radial extending portion 14a is equal to the thickness of each rear plate coupling portion 21b.
  • the rear end section of each radially extending portion 14a overlaps the entire front end section. Therefore, in this embodiment, the projections formed by projecting the rear end cross section of each radial extending portion 14a and the front end cross section of each rear plate coupling portion 21b onto the projection plane are substantially different from FIG. 1D. It is as if lines other than the outline of the radially extending portion 14a have been deleted.
  • a connecting piece 14 is provided along the rear plate 11 and the front plate 12 on the outer peripheral side of the rear plate 11 (mount unit non-bonded region) with respect to the mount unit connecting region 11 a.
  • a plurality of longitudinally extending portions 14b extending in one direction hereinafter referred to as the longitudinal direction for convenience
  • the longitudinal direction for convenience
  • the vertical direction the longitudinal direction
  • a plurality of laterally extending portions 14c extending in the lateral direction for convenience
  • the longitudinally extending portion 14b and the laterally extending portion 14c are arranged so as to cross each other in a lattice shape, and are coupled by a coupling means such as welding.
  • the crossing angle between the longitudinally extending portion 14b and the laterally extending portion 14c is not limited to a right angle.
  • the mount part coupling region 11a is surrounded by a pair of longitudinally extending parts 14b and a pair of laterally extending parts 14c.
  • the distal end side of each radial extending portion 14a in the radial direction is coupled to either the longitudinal extending portion 14b or the lateral extending portion 14c by a coupling means such as welding.
  • the longitudinally extending portion 14b is also distributed between some of the radially extending portions 14a and 14a.
  • 14 d of tip connection parts are distributed so that these tip parts may be connected.
  • the arrangement of the connecting pieces 14 is not limited to this.
  • Each of the impact receiving member 10 and the mount portion 20 is made of a rigid material such as iron. Specific materials of the impact receiving member 10 and the mount portion 20 and dimensions such as the thickness of each portion are appropriately set according to the maximum allowable value of the load applied to the impact receiving member 10.
  • the fender 1 in which the receiving member 10 configured in this manner is installed on the front surface of the fender body 2, when a berthing thing such as a ship comes into contact with the receiving member 10, With this load, the fender main body 2 is deformed so as to be crushed in the axial direction while expanding the middle part in the axial direction, and absorbs the impact. At that time, the mount 20 sinks inward of the fender main body 2 as the impact receiving member 10 is retracted, so that the fender is directly attached to the fender main body. The amount of deformation of the fender main body 2 is large. Thereby, the fender 1 can exhibit higher impact absorption performance.
  • each rear plate coupling portion 21b of the mount portion 20 and each radial extending portion 14a of the connecting piece 14 extend radially from the shaft-like portion 21a along the rear plate 11, respectively. It has become. Thereby, when the impact receiving member 10 receives a load from the front, the stress applied to the rear plate 11 from each rear plate coupling portion 21b radiates along the rear plate coupling portion 21b and the radially extending portion 14a. Since it is dispersed over a wide range, the stress applied to the rear plate 11 can be more efficiently dispersed.
  • the pedestal portion 21 of the mount portion 20 is configured such that the shaft-shaped portion 21 a is omitted, and each rear plate coupling portion 21 b extends radially from the axial center position of the fender body 2 along the rear surface of the rear plate 11. It may be.
  • each rear plate coupling portion 21b extends in a radial direction from the shaft-shaped portion 21a along the rear surface of the rear plate 11, but extends in a direction other than the radial direction. May be present.
  • each of the rear plate coupling portions 21b extends in a straight line along the rear surface of the rear plate 11, but is L-shaped, T-shaped, Y-shaped, X-shaped.
  • the shape may extend in a shape other than a straight line, such as a shape, a zigzag shape, or an arc shape.
  • at least a part of each rear plate coupling portion 21b may extend in an arc shape in the circumferential direction of the shaft-shaped portion 21a.
  • the front end side of the shaft-shaped portion 21a is disposed inside the impact receiving member 10, but instead of disposing the front end side of the shaft-shaped portion 21a inside the impact receiving member 10, the shaft-shaped portion You may distribute
  • the shaft-shaped portion 21a has a circular cross section, but the cross-sectional shape of the shaft-shaped portion 21a is not limited to this.
  • the shaft-shaped portion 21a may be, for example, an elliptical cross section or a polygonal cross section.
  • the shaft-shaped portion 21a has a cylindrical shape having a hollow inside, but may be a solid rod shape having no hollow inside.
  • Two or more mount portions 20 may be provided on the rear surface of the rear plate 11.
  • the connecting piece 14A arranged in the impact receiving member 10A has a plurality of pieces that intersect with each other in the form of a lattice, as in Patent Document 1. It is comprised only from the vertical direction extension part 14b and the horizontal direction extension part 14c.
  • the front end surface of the shaft portion 21a 'of the pedestal portion 21A is flush with the front end surface of each rear plate coupling portion 21b.
  • the front end side of the shaft-shaped portion 21a ' is not disposed inside the impact receiving member 10A, but is abutted against the rear surface of the rear surface plate 11, and is coupled to the rear surface plate 11 by a coupling means such as welding.
  • FIGS. 2A to 2C Other configurations of the fender 1A are the same as those of the fender 1 according to the embodiment, and in FIGS. 2A to 2C, the same reference numerals as those in FIGS. 1A to 1F denote the same parts.
  • a longitudinally extending portion 14b and a laterally extending portion 14c respectively extending in two orthogonal directions are also arranged in the mount portion coupling region 11a of the rear plate 11. It is installed.
  • Each of the longitudinally extending portions 14b and the laterally extending portions 14c does not face the entire rear surface plate coupling portion 21b of the mount portion 20A, and a portion crossing the front of each rear surface plate coupling portion 21b is locally present. It has become opposite to.
  • the rear end cross section of the connecting piece 14 (longitudinal extending portion 14b and lateral extending portion 14c) and the front end cross section of each rear plate coupling portion 21b are connected to the fender main body 2.
  • the area of the portion of the rear end cross section of the connecting piece 14 that overlaps the front end cross section of each rear plate coupling portion 21b in the projection plane is , Less than 25% of the total area of the front end cross section of each rear plate coupling portion 21b.
  • 3A and 3B show the measurement results.
  • the peak region of the stress applied to the rear plate 11 extends over a wide range along the radially extending portion 14a. Thereby, it turns out that stress is effectively disperse
  • the peak areas of the stress applied to the rear plate 11 are the rear plate coupling portions 21b and the longitudinally extending portions 14b or the lateral portions. It turns out that it concentrates on the intersection with the direction extension part 14c. Therefore, in the fender 1A according to the comparative example, it is necessary to make the rear plate 11 high in strength so that it can sufficiently withstand even if stress is concentrated in this way, and the weight and material cost increase.

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Abstract

Provided are an impact-bearing member that through a connecting piece can more efficiently disperse stress applied from a mount to a rear surface plate when the impact-bearing member bears a load from the front, and a fender in which the impact-bearing member is installed on the front surface of a fender main body. An impact-bearing member (10), which is installed on the front surface of a fender main body (2), is provided with a rear surface plate (11) positioned on the side of the fender main body, a front surface plate (12) that faces the rear surface plate (11), a connecting piece (14) that connects the front surface plate (12) and the rear surface plate (11), and a mount (20) having a rear surface plate coupler (21b) that is coupled to the rear surface of the rear surface plate (11); and is characterized in that when a rear end cross section of the connecting piece (14) and a front end cross section of the rear surface plate coupler (21b) are projected onto a shared projection plane that is substantially orthogonal to an axial center line of the fender main body (2), the surface area of the portion of the rear end cross section of the connecting piece (14) that overlaps the front end cross section of the rear surface plate coupler (21b) is 25% or more of the total surface area of the front end cross section of the rear surface plate coupler (21b) within the projection plane.

Description

防舷材及びその受衝部材Fender and its receiving member
　本発明は、岸壁等に取り付けられる防舷材本体の前面部に設置される受衝部材に関する。また、本発明は、この受衝部材を備えた防舷材に関する。 The present invention relates to an impact receiving member installed on a front surface portion of a fender body attached to a quay or the like. The present invention also relates to a fender having the impact receiving member.
　なお、本発明において、受衝部材の後方とは防舷材本体側をいい、前方とは防舷材本体と反対側をいう。 In the present invention, the rear of the impact receiving member refers to the fender main body side, and the front refers to the opposite side of the fender main body.
　防舷材は、一般にゴム等の緩衝性材料よりなる防舷材本体と、該防舷材本体の前面部に設置された受衝部材とを備えている（例えば特開平１１－４３９２１号公報）。特開平１１－４３９２１号公報の受衝部材は、防舷材本体側に位置する後面板と、該後面板に対峙する前面板と、該前面板と後面板とを連結した連結片と、該後面板の後面に設けられたマウント部とを備えている。受衝部材は、このマウント部を介して防舷材本体に連結される。特許文献１の受衝部材においては、連結片は、後面板及び前面板に沿って一方向に延在した複数個の第１方向延在部と、該第１方向延在部と直交方向に延在した複数個の第２方向延在部とを有し、これらが格子状に交わって互いに連結されたものとなっている。 The fender is generally provided with a fender main body made of a cushioning material such as rubber, and an impact receiving member installed on the front surface of the fender material main body (for example, Japanese Patent Application Laid-Open No. 11-43921). . The impact receiving member of Japanese Patent Application Laid-Open No. 11-43921 includes a rear plate located on the fender body side, a front plate facing the rear plate, a connecting piece connecting the front plate and the rear plate, And a mount portion provided on the rear surface of the rear plate. The impact receiving member is connected to the fender main body through the mount portion. In the receiving member of Patent Document 1, the connecting piece includes a plurality of first direction extending portions extending in one direction along the rear plate and the front plate, and a direction orthogonal to the first direction extending portion. A plurality of second direction extending portions extending, and these are connected to each other in a lattice shape.
　特開平１１－４３９２１号公報の第１～第３図の実施形態では、マウント部は、後面板の後面に沿って延在した板状であり、受衝部材の前方側からマウント部を貫通して防舷材本体にボルトが締め込まれることにより、受衝部材が該マウント部を介して防舷材本体に連結されている。 In the embodiment shown in FIGS. 1 to 3 of Japanese Patent Application Laid-Open No. 11-43921, the mount portion is a plate extending along the rear surface of the rear plate, and penetrates the mount portion from the front side of the impact receiving member. Then, the bolt is tightened into the fender body, whereby the impact receiving member is connected to the fender body through the mount portion.
　特開平１１－４３９２１号公報の第６図の実施形態では、マウント部は、後面板から後方へ延出した台座部と、該台座部の後端側に連なり、防舷材本体の前端面に沿って配置される取付座部とを有している。台座部は筒状のものであり、その軸心線方向を前後方向として配置され、その前端部が後面板の後面に結合され、後端部が取付座部の前面に結合されている。台座部の軸心線方向と直交方向における取付座部の外径は、該台座部の外径よりも大きなものとなっている。取付座部の台座部との結合部よりも外周側の部分には、該取付座部を前後方向に貫通したボルト挿通孔が設けられている。このボルト挿通孔を介して取付座部の前方から防舷材本体にボルトが締め込まれることにより、受衝部材が該マウント部を介して防舷材本体に連結される。 In the embodiment shown in FIG. 6 of Japanese Patent Laid-Open No. 11-43921, the mount portion is connected to the pedestal portion extending rearward from the rear plate and the rear end side of the pedestal portion, and is attached to the front end surface of the fender body. And a mounting seat portion arranged along. The pedestal portion is cylindrical, and is arranged with its axial center direction as the front-rear direction, its front end portion is coupled to the rear surface of the rear plate, and the rear end portion is coupled to the front surface of the mounting seat portion. The outer diameter of the mounting seat portion in the direction orthogonal to the axial center line direction of the pedestal portion is larger than the outer diameter of the pedestal portion. A bolt insertion hole that penetrates the mounting seat portion in the front-rear direction is provided in a portion of the mounting seat portion on the outer peripheral side of the coupling portion with the base portion. When the bolt is tightened into the fender main body from the front of the mounting seat through the bolt insertion hole, the impact receiving member is coupled to the fender main body through the mount.
　特開平１１－４３９２１号公報では、受衝部材の内部の連結片は、該受衝部材の後面板に結合されたマウント部の形状とは無関係に格子状に配設されているが、受衝部材が前方から荷重を受けたときにマウント部から後面板に加えられる応力をより効率よく連結片によって分散させることができる受衝部材が望まれている。 In Japanese Patent Application Laid-Open No. 11-43921, the connecting pieces inside the impact receiving member are arranged in a grid pattern regardless of the shape of the mount portion coupled to the rear plate of the impact receiving member. There is a demand for an impact receiving member that can more efficiently disperse the stress applied to the rear plate from the mount portion when the member receives a load from the front by the connecting piece.
　本発明は、受衝部材が前方から荷重を受けたときにマウント部から後面板に加えられる応力をより効率よく連結片によって分散させることができる受衝部材と、この受衝部材が防舷材本体の前面部に設置された防舷材とを提供することを目的とする。 The present invention relates to an impact receiving member that can more efficiently disperse the stress applied to the rear plate from the mount portion when the impact receiving member receives a load from the front, and the impact receiving member is a fender. An object of the present invention is to provide a fender provided on the front surface of the main body.
　本発明の第１の態様は、防舷材本体の前面部に設置される受衝部材であって、防舷材本体側に位置する後面板と、該後面板に対峙する前面板と、該前面板と後面板とを連結した連結片と、該後面板の後面に結合した後面板結合部を有するマウント部とを備えた受衝部材において、該連結片の後端断面と、該後面板結合部の前端断面とを、防舷材本体の軸心線と略直交する共通の投影面に投影した場合に、該投影面内において、該連結片の後端断面のうち該後面板結合部の前端断面と重なった部分の面積は、該後面板結合部の前端断面の全体の面積の２５％以上である。 A first aspect of the present invention is an impact receiving member installed on a front surface portion of a fender main body, a rear plate positioned on the fender main body side, a front plate facing the rear plate, A receiving member comprising a connecting piece connecting a front plate and a rear plate, and a mount portion having a rear plate connecting portion connected to the rear surface of the rear plate, a rear end cross section of the connecting piece, and the rear plate When the front end cross section of the coupling portion is projected onto a common projection plane that is substantially orthogonal to the axial center line of the fender body, the rear plate coupling portion of the rear end cross section of the connecting piece within the projection plane The area of the portion overlapping the front end cross section is 25% or more of the total area of the front end cross section of the rear plate coupling portion.
　本発明の第２の態様は、本発明の第１の態様において、前記投影面内において、前記後面板結合部の前端断面の略全体に前記連結片の後端断面が重なっている。 According to a second aspect of the present invention, in the first aspect of the present invention, the rear end section of the connecting piece overlaps substantially the entire front end section of the rear plate coupling portion in the projection plane.
　本発明の第３の態様は、第１又は第２の態様において、前記後面板結合部の少なくとも一部と、その前方位置に存在した前記連結片の少なくとも一部とは、前記後面板に沿って該後面板の所定位置からの放射方向に延在している。 According to a third aspect of the present invention, in the first or second aspect, at least a part of the rear plate coupling portion and at least a part of the connecting piece present at a front position thereof are along the rear plate. The rear plate extends in a radial direction from a predetermined position.
　本発明の第４の態様は、第１～第３の何れかの態様において、前記マウント部は、前記後面板結合部の後端が連なる取付座部を有している。 According to a fourth aspect of the present invention, in any one of the first to third aspects, the mount portion has a mounting seat portion that is connected to a rear end of the rear plate coupling portion.
　本発明の第５の態様は、第４の態様において、前記マウント部は、前記後面板から後方に延出し、後端が前記取付座部に連なる軸状部を有しており、前記後面板結合部の少なくとも一部は、該軸状部から該後面板の後面に沿って放射方向に延在している。 According to a fifth aspect of the present invention, in the fourth aspect, the mount portion includes a shaft-like portion that extends rearward from the rear surface plate and has a rear end continuous to the mounting seat portion. At least a part of the coupling portion extends radially from the shaft-like portion along the rear surface of the rear plate.
　本発明の第６の態様は、第５の態様において、前記軸状部は、前記後面板を貫いて前記前面板と前記取付座部とを連結している。 The sixth aspect of the present invention is that, in the fifth aspect, the shaft-like portion penetrates the rear plate and connects the front plate and the mounting seat portion.
　本発明の第７の態様は、第１～第６の何れかの態様において、前記連結片の後端に、前記後面板の前面に重なるフランジ部が設けられている。 According to a seventh aspect of the present invention, in any one of the first to sixth aspects, a flange portion that overlaps a front surface of the rear plate is provided at a rear end of the connecting piece.
　本発明の第８の態様は、第１～第６の何れかの態様において、受衝部材が防舷材本体の前面部に設置されたものである。 In an eighth aspect of the present invention, in any of the first to sixth aspects, the impact receiving member is installed on the front surface of the fender body.
　本発明の第１の態様によれば、受衝部材は、連結片の後端断面と、マウント部の後面板結合部の前端断面とを、防舷材本体の軸心線と略直交する共通の投影面に投影した場合に、該投影面内において、該連結片の後端断面のうち該後面板結合部の前端断面と重なった部分の面積は、該後面板結合部の前端断面の全体の面積の２５％以上となっている。そのため、受衝部材が前方から荷重を受けたときに、後面板結合部から後面板に加えられる応力を連結片によって効率よく分散させることができる。これにより、受衝部材の各部の要求強度を比較的低く設定することが可能となる。その結果、受衝部材の軽量化や、受衝部材の材料コストの削減を実現することが可能となる。なお、この２５％以上との数値範囲は、本発明者らが受衝部材の構成を種々変更してコンピュータシミュレーションや実機試験等を繰り返し、顕著な応力分散効果が得られる範囲を特定したものである。本発明において、防舷材本体の軸心線とは、防舷材本体の前端面及び後端面の図心位置を通る前後方向の軸線をいう。例えば防舷材本体が略円筒形状のものである場合には、この防舷材本体の軸心線とは、実質的に、この円筒の軸心線に合致する。防舷材本体の軸心線と略直交するとは、投影面の直交方向（法線方向）が防舷材本体の軸心線に対し若干（好ましくは５°以下）傾いていてもよいことを示している。 According to the first aspect of the present invention, the receiving member has a common structure in which the rear end cross-section of the connecting piece and the front end cross-section of the rear plate coupling portion of the mount portion are substantially orthogonal to the shaft center line of the fender body. In the projection plane, the area of the portion of the rear end cross section of the connecting piece that overlaps the front end cross section of the rear plate coupling portion in the projection plane is the entire front end cross section of the rear plate coupling portion. It is 25% or more of the area. Therefore, when the impact receiving member receives a load from the front, the stress applied from the rear plate coupling portion to the rear plate can be efficiently dispersed by the connecting piece. Thereby, the required strength of each part of the impact receiving member can be set relatively low. As a result, it is possible to reduce the weight of the impact receiving member and reduce the material cost of the impact receiving member. The numerical range of 25% or more is a range in which the inventors have made various changes in the configuration of the impact receiving member and repeated computer simulations and actual machine tests to specify a range in which a remarkable stress dispersion effect can be obtained. is there. In the present invention, the axial center line of the fender main body means an axial line in the front-rear direction passing through the centroid positions of the front end face and the rear end face of the fender main body. For example, when the fender main body has a substantially cylindrical shape, the axis of the fender main body substantially matches the axis of the cylinder. The term “substantially orthogonal to the axis of the fender main body” means that the orthogonal direction (normal direction) of the projection surface may be slightly inclined (preferably 5 ° or less) with respect to the axis of the fender main body. Show.
　本発明の第２の態様によれば、前記投影面内において、後面板結合部の前端断面の略全体に連結片の後端断面が重なっていることが好ましい。なお、本発明において、後面板結合部の前端断面の略全体とは、該前端断面の５０％以上好ましくは７５％以上をいう。このように構成することより、受衝部材が前方から荷重を受けたときに、該後面板結合部から後面板に加えられた応力を連結片によって一層効率よく分散させることができる。 According to the second aspect of the present invention, it is preferable that the rear end cross section of the connecting piece overlaps substantially the entire front end cross section of the rear plate coupling portion in the projection plane. In addition, in this invention, the substantially whole front-end cross section of a rear-surface board coupling | bond part means 50% or more of this front-end cross section, Preferably it is 75% or more. By configuring in this way, when the impact receiving member receives a load from the front, the stress applied to the rear plate from the rear plate coupling portion can be more efficiently dispersed by the connecting piece.
　本発明の第３の態様によれば、後面板結合部と、その前方位置に存在した連結片とを後面板に沿って該後面板の所定位置（例えば防舷材本体の軸心位置と対応する位置）から放射方向に延在させることにより、受衝部材が前方から荷重を受けたときに後面板結合部から後面板に加えられる応力がこれらの後面板結合部及び連結片に沿って放射状に広範囲に分散されるため、後面板に加えられる応力を一層効率よく分散させることができる。 According to the third aspect of the present invention, the rear surface plate coupling portion and the connecting piece existing at the front position thereof correspond to a predetermined position of the rear surface plate along the rear surface plate (for example, the axial center position of the fender main body). The stress applied to the rear plate from the rear plate coupling portion when the impact receiving member receives a load from the front is radiated along the rear plate coupling portion and the connecting piece. Therefore, the stress applied to the rear plate can be more efficiently dispersed.
　本発明の第４の態様によれば、マウント部に、後面板結合部の後端が連なる取付座部を設けることにより、後面板結合部の後端側をこの取付座部を介して防舷材本体にしっかりと連結することができる。また、後面板結合部の後端側がこの取付座部によって支持されるため、後面板結合部による受衝部材の支持剛性が高いものとなる。 According to the fourth aspect of the present invention, the mounting portion is provided with the mounting seat portion where the rear end of the rear surface plate coupling portion is continuous, so that the rear end side of the rear surface plate coupling portion is protected via the mounting seat portion. It can be firmly connected to the material body. Further, since the rear end side of the rear plate coupling portion is supported by the mounting seat portion, the support member has a high support rigidity by the rear plate coupling portion.
　本発明の第５の態様によれば、後面板から後方に延出し、後端が取付座部に連なる軸状部を設けることにより、受衝部材がこの軸状部によっても支持されるため、受衝部材が前方から荷重を受けたときに後面板結合部から後面板に加えられる応力が緩和される。そして、後面板結合部をこの軸状部から放射方向に延在させることにより、この軸状部によって緩和された後面板の応力がさらに後面板結合部に沿って軸状部から放射状に広範囲に分散される。その結果、受衝部材の各部の要求強度をより低く設定することが可能となる。 According to the fifth aspect of the present invention, the impact receiving member is also supported by the shaft-shaped portion by providing a shaft-shaped portion extending rearward from the rear plate and having the rear end connected to the mounting seat portion. When the impact receiving member receives a load from the front, the stress applied to the rear plate from the rear plate coupling portion is relieved. Then, by extending the rear plate coupling portion in a radial direction from the shaft-shaped portion, the stress of the rear plate relaxed by the shaft-shaped portion further spreads radially from the shaft-shaped portion along the rear plate coupling portion. Distributed. As a result, the required strength of each part of the impact receiving member can be set lower.
　本発明の第６の態様によれば、この軸状部を、後面板を貫いて前面板と取付座部とを連結したものとすることにより、受衝部材が前方から荷重を受けたときに後面板結合部から後面板に加えられる応力を一層緩和することができる。 According to the sixth aspect of the present invention, the shaft-like portion is formed by connecting the front plate and the mounting seat portion through the rear plate, so that the impact receiving member receives a load from the front. The stress applied to the rear plate from the rear plate coupling portion can be further relaxed.
　本発明の第７の態様によれば、連結片の後端に、後面板の前面に重なるフランジ部を設けることにより、連結片の後端側と後面板の前面との接触面積が大きくなるため、連結片の後面板への結合強度が向上する。また、このフランジ部により後面板の剛性が高まるため、これを考慮して後面板自体の強度を比較的低く設定することができる。なお、連結片の後端にフランジ部が設けられている場合、前記投影面に投影される連結片の後端断面とは、このフランジ部を含んでいてもよく、このフランジ部を含んでいなくてもよい。 According to the seventh aspect of the present invention, by providing the flange portion overlapping the front surface of the rear plate at the rear end of the connecting piece, the contact area between the rear end side of the connecting piece and the front surface of the rear plate is increased. The bonding strength to the rear plate of the connecting piece is improved. Further, since the rigidity of the rear plate is increased by this flange portion, the strength of the rear plate itself can be set relatively low in consideration of this. In addition, when the flange part is provided in the rear end of the connection piece, the rear end cross section of the connection piece projected on the projection surface may include the flange part, and does not include the flange part. It does not have to be.
　本発明の第８の態様によれば、防舷材は、かかる本発明の受衝部材が防舷材本体の前面部に設置されたものであるため、受衝部材が前方から荷重を受けたときに、後面板結合部から後面板に加えられる応力を連結片によって効率よく分散させることができる防舷材の構成とすることができる。また、防舷材を全体として比較的軽量で且つ低コストに構成することが可能である。また、防舷材が軽量となることにより、防舷材を岸壁等の防舷材設置面に固定するための固定構造の要求強度も比較的低く設定することが可能となる。 According to the eighth aspect of the present invention, in the fender, since the impact receiving member of the present invention is installed on the front surface of the fender main body, the impact receiving member receives a load from the front. In some cases, the fender can be configured to efficiently disperse the stress applied to the rear plate from the rear plate coupling portion by the connecting piece. In addition, the fender can be relatively light and low-cost as a whole. In addition, since the fender is lighter, the required strength of the fixing structure for fixing the fender to the fender installation surface such as a quay can be set relatively low.
図１Ａは実施形態に係る受衝部材を備えた防舷材の断面斜視図であり、図１ＤのIA－IA線に沿う断面を示している。FIG. 1A is a cross-sectional perspective view of a fender having an impact receiving member according to the embodiment, and shows a cross section taken along line IA-IA in FIG. 1D. 図１Ｂは図１Ａにおいて受衝部材の前面板を透視した状態を示す透視断面斜視図である。FIG. 1B is a perspective cross-sectional perspective view showing a state where the front plate of the impact receiving member is seen through in FIG. 1A. 図１Ｃは図１Ａの受衝部材のマウント部の斜視図である。1C is a perspective view of a mount portion of the impact receiving member of FIG. 1A. 図１Ｄは図１ＢのID部分（受衝部材の後面板のマウント部結合領域付近）の正面図である。FIG. 1D is a front view of the ID portion (in the vicinity of the mounting portion coupling region of the rear plate of the impact receiving member) in FIG. 図１Ｅは図１ＤのIE－IE線に沿う断面図である。FIG. 1E is a cross-sectional view taken along the line IE-IE in FIG. 1D. 図１Ｆは図１ＤのIF－IF線に沿う断面図である。FIG. 1F is a sectional view taken along line IF-IF in FIG. 1D. 図２Ａは比較例に係る受衝部材を備えた防舷材の部分透視断面斜視図であり、防舷材本体の軸心線方向に沿う断面を示し、且つ、受衝部材の前面板を透視した状態を示している。FIG. 2A is a partially transparent sectional perspective view of a fender having a receiving member according to a comparative example, showing a cross-section along the axial center line direction of the fender body and seeing through the front plate of the receiving member Shows the state. 図２Ｂは図２ＡのIIB部分（受衝部材の後面板のマウント部結合領域付近）の正面図である。FIG. 2B is a front view of the IIB portion of FIG. 2A (near the mounting portion coupling region of the rear plate of the impact receiving member). 図２Ｃは図２ＢのIIC－IIC線に沿う断面図である。2C is a cross-sectional view taken along the line IIC-IIC in FIG. 2B. 図３Ａは実施例における後面板の応力分布を示す図である。FIG. 3A is a diagram illustrating a stress distribution of the rear plate in the example. 図３Ｂは比較例における後面板の応力分布を示す図である。FIG. 3B is a diagram showing a stress distribution of the rear plate in the comparative example.
　以下に、実施形態について説明する。なお、以下の実施形態は、略円筒形状の防舷材本体を備えたタイプの防舷材への本発明の適用例を示しているが、本発明は、これ以外のタイプの防舷材（例えばアーチ形状の防舷材）にも適用可能である。 Hereinafter, embodiments will be described. In addition, although the following embodiment has shown the example of application of this invention to the fender of the type provided with the substantially cylindrical fender main body, this invention is a fender of other types ( For example, the present invention can also be applied to arch-shaped fenders.
［実施形態］
　防舷材１は、岸壁等の防舷材設置面（図示略）に取り付けられる防舷材本体２と、該防舷材本体２の前面部に設けられた受衝部材１０とを備えている。防舷材本体２は、ゴム等の緩衝性材料よりなる。この実施形態では、防舷材本体２は、略円筒形状のものであり、その軸心線方向の一端側の端面（後端面）が防舷材設置面と対面するように配置され、ボルト等の固定手段（図示略）により該防舷材設置面に固定される。防舷材本体２の軸心線方向の他端側の端面（前端面）に、受衝部材１０の後面に設けられたマウント部２０が連結されている。図１Ａ，図１Ｂの通り、防舷材本体２は、前端側ほど内径及び外径が小さくなるテーパ形状となっている。防舷材本体２の内部には、その前端面に沿って鉄等の剛性材料からなる埋込部材３が埋設されている。埋込部材３には、防舷材本体２の前端面の周方向に所定の間隔をあけて複数個の雌ねじ孔４（図１Ｅ）が設けられている。 [Embodiment]
The fender 1 includes a fender main body 2 attached to a fender installation surface (not shown) such as a quay, and an impact receiving member 10 provided on the front surface of the fender main body 2. . The fender body 2 is made of a cushioning material such as rubber. In this embodiment, the fender main body 2 has a substantially cylindrical shape, and is arranged so that the end surface (rear end surface) on one end side in the axial center direction faces the fender material installation surface, such as a bolt. The fixing means (not shown) is fixed to the fender mounting surface. A mount portion 20 provided on the rear surface of the impact receiving member 10 is connected to the end surface (front end surface) on the other end side in the axial direction of the fender body 2. As shown in FIGS. 1A and 1B, the fender main body 2 has a tapered shape in which the inner diameter and the outer diameter become smaller toward the front end side. An embedding member 3 made of a rigid material such as iron is embedded in the fender main body 2 along the front end surface thereof. The embedding member 3 is provided with a plurality of female screw holes 4 (FIG. 1E) at predetermined intervals in the circumferential direction of the front end face of the fender body 2.
　図１Ａ，図１Ｂ，図１Ｄ～図１Ｆの通り、受衝部材１０は、防舷材本体２側に位置する後面板１１と、該後面板１１に対峙する前面板１２と、該後面板１１と前面板１２とを連結した連結片１４と、該後面板１１の後面に結合されたマウント部２０等を備えている。前面板１２は、後面板１１から前方に間隔をあけて配置されている。後面板１１が受衝部材１０の後面を構成し、前面板１２が受衝部材１０の前面を構成している。後面板１１及び前面板１２の周縁部同士は、側面板１３によって連結されている。この側面板１３により、受衝部材１０がより剛性の高いものとなり、また受衝部材１０内への海水等の浸入が防止される。連結片１４は、これらの後面板１１、前面板１２及び側面板１３によって取り囲まれた受衝部材１０の内部に配置されている。この実施形態では、後面板１１の略中央部が、マウント部２０が結合されたマウント部結合領域１１ａとなっている。前面板１２の前面には、重量平均分子量が５０万以上の超高分子量ポリエチレン板等の緩衝性材料よりなるパッド（図示略）が取り付けられる。連結片１４の詳細については後述する。 As shown in FIGS. 1A, 1B, and 1D to 1F, the impact receiving member 10 includes a rear plate 11 positioned on the fender body 2 side, a front plate 12 facing the rear plate 11, and the rear plate 11. And a front plate 12 and a connecting piece 14 connected to the rear surface of the rear plate 11. The front plate 12 is disposed with a space forward from the rear plate 11. The rear plate 11 constitutes the rear surface of the impact receiving member 10, and the front plate 12 constitutes the front surface of the impact receiving member 10. The peripheral portions of the rear plate 11 and the front plate 12 are connected by a side plate 13. The side plate 13 makes the impact receiving member 10 more rigid and prevents seawater and the like from entering the impact receiving member 10. The connecting piece 14 is arranged inside the impact receiving member 10 surrounded by the rear plate 11, the front plate 12 and the side plate 13. In this embodiment, the substantially central portion of the rear plate 11 is a mount portion coupling region 11a to which the mount portion 20 is coupled. A pad (not shown) made of a buffer material such as an ultra high molecular weight polyethylene plate having a weight average molecular weight of 500,000 or more is attached to the front surface of the front plate 12. Details of the connecting piece 14 will be described later.
　この実施形態では、マウント部２０は、後面板１１から後方に延出した台座部２１と、該台座部２１の後端側に連なり、防舷材本体２の前端面に沿って配置された取付座部２２とを備えている。この実施形態では、台座部２１は、後面板１１から後方に延出し、後端が取付座部２２に連なる軸状部２１ａと、該軸状部２１ａの周囲に配置され、後面板１１の後面に結合された複数個の後面板結合部２１ｂとを有している。各後面板結合部２１ｂの後端も取付座部２２に連なっている。この実施形態では、各後面板結合部２１ｂの前端断面とは、各後面板結合部２１ｂの、後面板１１の後面に沿う断面である。即ち、この実施形態では、図１Ｃにおける各後面板結合部２１ｂの前端面（取付座部２２と反対側の端面）がそれぞれ請求項１における後面板結合部の前端断面に相当する。 In this embodiment, the mount portion 20 is connected to the pedestal portion 21 extending rearward from the rear plate 11 and the rear end side of the pedestal portion 21, and is mounted along the front end surface of the fender body 2. And a seat portion 22. In this embodiment, the pedestal portion 21 extends rearward from the rear plate 11, the rear end is arranged around the shaft-shaped portion 21 a, and the rear surface of the rear plate 11. And a plurality of rear plate coupling portions 21b coupled to each other. The rear end of each rear plate coupling portion 21 b is also connected to the mounting seat portion 22. In this embodiment, the front end cross section of each rear plate coupling portion 21b is a cross section along the rear surface of the rear plate 11 of each rear plate coupling portion 21b. That is, in this embodiment, the front end surface (the end surface opposite to the mounting seat portion 22) of each rear plate coupling portion 21b in FIG. 1C corresponds to the front end cross section of the rear plate coupling portion in claim 1.
　この実施形態では、軸状部２１ａは、略円筒状のものであり、その軸心線方向を略前後方向として防舷材本体２と略同軸状に配置されている。この実施形態では、図１Ｅの通り、軸状部２１ａは、前端側が受衝部材１０の内部に配置され、前面板１２の後面に溶接等の結合手段により結合されている。軸状部２１ａの後端側は、後面板１１のマウント部結合領域１１ａの略中央部に設けられた開口１１ｂを介して受衝部材１０の外部且つ後方に延出している。即ち、この実施形態では、軸状部２１ａは、後面板１１を貫いて前面板１２と取付座部２２とを連結したものとなっている。開口１１ｂの内周縁は、軸状部２１ａの軸心線方向の途中部の外周面に溶接等の結合手段により結合されている。 In this embodiment, the shaft-shaped portion 21a is substantially cylindrical, and is disposed substantially coaxially with the fender main body 2 with the axial direction of the shaft being approximately the front-rear direction. In this embodiment, as shown in FIG. 1E, the shaft-like portion 21a is disposed at the front end side inside the impact receiving member 10, and is coupled to the rear surface of the front plate 12 by a coupling means such as welding. The rear end side of the shaft-shaped portion 21 a extends to the outside and the rear of the impact receiving member 10 through an opening 11 b provided in a substantially central portion of the mount portion coupling region 11 a of the rear plate 11. That is, in this embodiment, the shaft-shaped portion 21 a is formed by connecting the front plate 12 and the mounting seat portion 22 through the rear plate 11. The inner peripheral edge of the opening 11b is coupled to the outer peripheral surface of the middle portion of the shaft portion 21a in the axial center line direction by a coupling means such as welding.
　取付座部２２は、この実施形態では略円板状のものであり、軸状部２１ａと略同心状に配置され、前面が該軸状部２１ａの後端に結合されている。取付座部２２の外径は軸状部２１ａの外径よりも大きなものとなっている。取付座部２２の軸状部２１ａとの結合部よりも外周側の部分には、その周方向に所定の間隔をあけて複数個のボルト挿通孔２２ａが設けられている。これらのボルト挿通孔２２ａは、埋込部材３の各雌ねじ孔４にそれぞれ重なるように設けられている。マウント部２０は、取付座部２２が防舷材本体２の前端面に沿って配置され、取付座部２２の前方側から各ボルト挿通孔２２ａを介して各雌ねじ孔４にボルト５が締め込まれることにより、防舷材本体２の前端面に連結されている。なお、マウント部２０の防舷材本体２への連結方法はこれに限定されない。 The mounting seat portion 22 is substantially disc-shaped in this embodiment, and is disposed substantially concentrically with the shaft-shaped portion 21a. The front surface is coupled to the rear end of the shaft-shaped portion 21a. The outer diameter of the mounting seat portion 22 is larger than the outer diameter of the shaft-shaped portion 21a. A plurality of bolt insertion holes 22a are provided at a predetermined interval in the circumferential direction at a portion of the mounting seat portion 22 on the outer peripheral side of the coupling portion with the shaft-shaped portion 21a. These bolt insertion holes 22 a are provided so as to overlap the respective female screw holes 4 of the embedding member 3. In the mount portion 20, the mounting seat portion 22 is disposed along the front end surface of the fender body 2, and the bolt 5 is tightened into each female screw hole 4 from the front side of the mounting seat portion 22 via each bolt insertion hole 22 a. As a result, it is connected to the front end face of the fender body 2. In addition, the connection method to the fender main body 2 of the mount part 20 is not limited to this.
　この実施形態では、後面板結合部２１ｂは、後面板１１の後面に沿って軸状部２１ａから放射方向に延在している。この実施形態では、軸状部２１ａの周方向に間隔をあけて複数個の後面板結合部２１ｂが設けられている。後面板結合部２１ｂの個数は、３～２４個特に６～１２個が好ましく、６～８個がさらに好ましく、軸状部２１ａの周方向に隣り合う後面板結合部２１ｂ，２１ｂ同士の間の開き角θ（図１Ｃ）は１５～１２０°特に３０～６０°であることが好ましく、さらに４５～６０°であることが好ましい。この実施形態では、各後面板結合部２１ｂは、さらに、各ボルト５の締め込み作業性の観点から、各ボルト挿通孔２２ａから該周方向に所定距離離隔した位置に配置されている。この実施形態では、図１Ｃの通り、該周方向に隣り合うボルト挿通孔２２ａ，２２ａ同士の略中間にそれぞれ後面板結合部２１ｂが配置されている。なお、各後面板結合部２１ｂの配置はこれに限定されない。例えば、該周方向に隣り合うボルト挿通孔２２ａ，２２ａ同士の間に２個以上の後面板結合部２１ｂが配置されてもよい。 In this embodiment, the rear plate coupling portion 21b extends in the radial direction from the shaft-shaped portion 21a along the rear surface of the rear plate 11. In this embodiment, a plurality of rear plate coupling portions 21b are provided at intervals in the circumferential direction of the shaft-shaped portion 21a. The number of rear plate coupling portions 21b is preferably 3 to 24, particularly 6 to 12, more preferably 6 to 8, and between the rear plate coupling portions 21b and 21b adjacent to each other in the circumferential direction of the shaft-shaped portion 21a. The opening angle θ (FIG. 1C) is preferably 15 to 120 °, particularly preferably 30 to 60 °, and more preferably 45 to 60 °. In this embodiment, each rear plate coupling portion 21b is further disposed at a position spaced apart from each bolt insertion hole 22a by a predetermined distance in the circumferential direction from the viewpoint of workability of tightening each bolt 5. In this embodiment, as shown in FIG. 1C, rear plate coupling portions 21b are respectively arranged in the approximate middle between the bolt insertion holes 22a, 22a adjacent in the circumferential direction. In addition, arrangement | positioning of each rear surface board coupling | bond part 21b is not limited to this. For example, two or more rear plate coupling portions 21b may be disposed between the bolt insertion holes 22a and 22a adjacent in the circumferential direction.
　この実施形態では、後面板１１の後面に沿う軸状部２１ａからの放射方向における各後面板結合部２１ｂの長さ（以下、単に各後面板結合部２１ｂの長さということがある。）は、同方向における取付座部２２の軸状部２１ａとの結合部よりも外周側の部分の幅と略同等となっている。なお、各後面板結合部２１ｂの長さはこれに限定されない。 In this embodiment, the length of each rear plate coupling portion 21b in the radial direction from the shaft-shaped portion 21a along the rear surface of the rear surface plate 11 (hereinafter sometimes simply referred to as the length of each rear plate coupling portion 21b). The width of the portion on the outer peripheral side with respect to the connecting portion with the shaft-like portion 21a of the mounting seat portion 22 in the same direction is substantially equal. In addition, the length of each rear surface board coupling | bond part 21b is not limited to this.
　この実施形態では、各後面板結合部２１ｂは、略方形板状のものであり、その板面の延在方向を後面板１１の後面と略直交方向且つ軸状部２１ａからの略放射方向として該軸状部２１ａの周囲の後面板１１と取付座部２２との間のスペースに配置されている。各後面板結合部２１ｂの該放射方向中心側の端部は軸状部２１ａの外周面に結合され、各後面板結合部２１ｂの後端部は、取付座部２２の軸状部２１ａとの連結部よりも外周側の部分の前面に結合されている。なお、マウント部２０は、軸状部２１ａ、各後面板結合部２１ｂ及び取付座部２２が初めから一体に成形されたものであってもよく、これらのうちの少なくとも一部が他の部分と別々に成形された後、溶接等の結合手段により結合一体化されたものであってもよい。各後面板結合部２１ｂの前端部は溶接等の結合手段により後面板１１の後面に結合されている。 In this embodiment, each of the rear plate coupling portions 21b has a substantially rectangular plate shape, and the extending direction of the plate surface is a direction substantially orthogonal to the rear surface of the rear plate 11 and a substantially radial direction from the shaft-shaped portion 21a. It is disposed in a space between the rear plate 11 and the mounting seat portion 22 around the shaft portion 21a. The end of each rear plate coupling portion 21b on the center side in the radial direction is coupled to the outer peripheral surface of the shaft-shaped portion 21a, and the rear end portion of each rear plate coupling portion 21b is connected to the shaft-shaped portion 21a of the mounting seat portion 22. It is connected to the front surface of the portion on the outer peripheral side with respect to the connecting portion. The mount portion 20 may be one in which the shaft-like portion 21a, each rear plate coupling portion 21b, and the mounting seat portion 22 are integrally formed from the beginning, and at least a part of these is different from other portions. It may be formed separately and then combined and integrated by a connecting means such as welding. The front end of each rear plate coupling portion 21b is coupled to the rear surface of the rear plate 11 by a coupling means such as welding.
　この実施形態では、連結片１４は略帯板状のものであり、その板面を後面板１１の前面及び前面板１２の後面と略直交方向として配置され、後端側が該後面板１１の前面に溶接等により結合されると共に、前端側が該前面板１２の後面に溶接等により結合されている。この実施形態では、連結片１４の後端側に、後面板１１の前面に沿って該連結片１４から側方へ張り出すフランジ部１５が形成されている。このフランジ部１５が後面板１１の前面に重なることにより、連結片１４の後端側と後面板１１の前面との接触面積が大きくなるため、連結片１４の後面板１１への結合強度が向上する。また、このフランジ部１５により後面板１１の剛性が高まるため、これを考慮して後面板１１自体の強度を比較的低く設定することができる。なお、連結片１４の前端側にも、前面板１２の後面に沿って該連結片１４から側方へ張り出すフランジ部が設けられてもよい。この実施形態では、連結片１４の後端断面とは、該連結片１４の、後面板１１の前面に沿う断面である。本発明において、この連結片１４の後端断面とは、フランジ部１５を含んでいてもよく、フランジ部１５を含んでいなくてもよい。 In this embodiment, the connecting piece 14 has a substantially band plate shape, and its plate surface is arranged in a direction substantially orthogonal to the front surface of the rear plate 11 and the rear surface of the front plate 12, and the rear end side is the front surface of the rear plate 11. The front end side is coupled to the rear surface of the front plate 12 by welding or the like. In this embodiment, a flange portion 15 is formed on the rear end side of the connecting piece 14 so as to project sideways from the connecting piece 14 along the front surface of the rear plate 11. Since the flange portion 15 overlaps the front surface of the rear plate 11, the contact area between the rear end side of the connecting piece 14 and the front surface of the rear plate 11 is increased, so that the coupling strength to the rear plate 11 of the connecting piece 14 is improved. To do. Further, since the rigidity of the rear plate 11 is increased by the flange portion 15, the strength of the rear plate 11 itself can be set to be relatively low in consideration of this. Note that a flange portion that protrudes laterally from the connection piece 14 along the rear surface of the front plate 12 may also be provided on the front end side of the connection piece 14. In this embodiment, the rear end cross section of the connecting piece 14 is a cross section of the connecting piece 14 along the front surface of the rear plate 11. In the present invention, the rear end cross section of the connecting piece 14 may include the flange portion 15 or may not include the flange portion 15.
　この実施形態では、連結片１４のうち、後面板１１のマウント部結合領域１１ａに配置された部分は、開口１１ｂの周縁部から放射方向に延在した放射方向延在部１４ａとなっている。この放射方向延在部１４ａは、マウント部２０の後面板結合部２１ｂと同数個設けられており、それぞれ、後面板１４を挟んで各後面板結合部２１ｂの前方に存在する位置に配置されている。各放射方向延在部１４ａの該放射方向中心側の端部は、受衝部材１０内に配置された軸状部２１ａの前端側の外周面に溶接等の結合手段により結合されている。 In this embodiment, a portion of the connecting piece 14 disposed in the mount coupling region 11a of the rear plate 11 is a radially extending portion 14a extending radially from the peripheral edge of the opening 11b. The radial extending portions 14a are provided in the same number as the rear plate coupling portions 21b of the mount portion 20, and are respectively disposed at positions in front of the respective rear plate coupling portions 21b with the rear plate 14 interposed therebetween. Yes. The end of each radial extending portion 14a on the center side in the radial direction is coupled to the outer peripheral surface on the front end side of the shaft-shaped portion 21a disposed in the impact receiving member 10 by a coupling means such as welding.
　本発明においては、各放射方向延在部１４ａの後端断面と各後面板結合部２１ｂの前端断面とを、防舷材本体２の軸心線と略直交する共通の投影面に投影した場合に、該投影面内において、各放射方向延在部１４ａの後端断面のうち各後面板結合部２１ｂの前端断面と重なった部分の面積は、各々が重なった後面板結合部２１ｂの前端断面の全体の面積の２５％以上となっている。特に、各放射方向延在部１４ａは、各後面板結合部２１ｂの前端断面の略全体に重なっていることが好ましい。なお、本発明において、後面板結合部２１ｂの前端断面の略全体とは、該前端断面の５０％以上好ましくは７５％以上をいう。本発明においては、各放射方向延在部１４ａの開口１１ｂからの放射方向の長さ（以下、単に放射方向延在部１４ａの長さということがある。）は、各後面板結合部２１ｂの長さよりも大きくてもよい。各放射方向延在部１４ａの厚さは、各後面板結合部２１ｂの厚さと同等であってもよく、異なっていてもよい。 In the present invention, when the rear end cross section of each radially extending portion 14a and the front end cross section of each rear plate coupling portion 21b are projected onto a common projection plane that is substantially orthogonal to the axis of the fender body 2 Furthermore, in the projection plane, the area of the portion of the rear end cross section of each radial extending portion 14a that overlaps the front end cross section of each rear plate coupling portion 21b is the front end cross section of the rear plate coupling portion 21b that overlaps each other. The total area is 25% or more. In particular, each radial extending portion 14a preferably overlaps substantially the entire front end cross section of each rear plate coupling portion 21b. In addition, in this invention, the substantially whole front-end cross section of the rear-surface board coupling | bond part 21b means 50% or more of this front end cross section, Preferably it is 75% or more. In the present invention, the length in the radial direction from the opening 11b of each radial extending portion 14a (hereinafter, simply referred to as the length of the radial extending portion 14a) is the length of each rear plate coupling portion 21b. It may be larger than the length. The thickness of each radially extending portion 14a may be equal to or different from the thickness of each rear plate coupling portion 21b.
　この実施形態では、図１Ｄ～図１Ｆの通り、各放射方向延在部１４ａの長さは、各々が対向する後面板結合部２１ｂの長さよりも大きなものとなっており、各放射方向延在部１４ａの放射方向の先端側は、各後面板結合部２１ｂよりも後面板１１の外周側まで延在している。このように構成することにより、各後面板結合部２１ｂから後面板１１に加えられる応力が各放射方向延在部１４ａを介してより広範囲に分散されるようになる。この場合、各放射方向延在部１４ａの長さは、各々が対向する後面板結合部２１ｂの長さの０．５～５．０倍特に１．０～３．０倍であることが好ましく、さらに２．０～３．０倍であることが好ましい。各放射方向延在部１４ａは、マウント部結合領域１１ａよりも後面板１１の外周側まで（最長で側面板１３まで）延在していてもよい。この実施形態では、図１Ｆの通り、各放射方向延在部１４ａの厚さは各後面板結合部２１ｂの厚さと同等となっているので、前記投影面内において、各後面板結合部２１ｂの前端断面の全体に各放射方向延在部１４ａの後端断面が重なる。従って、この実施形態では、各放射方向延在部１４ａの後端断面と各後面板結合部２１ｂの前端断面とを前記投影面に投影してなる投影図は、実質的に、図１Ｄから各放射方向延在部１４ａの輪郭線以外の線を消去した如きものとなる。 In this embodiment, as shown in FIGS. 1D to 1F, the length of each radial extending portion 14a is larger than the length of the rear plate coupling portion 21b facing each other. The front end side in the radial direction of the portion 14a extends to the outer peripheral side of the rear plate 11 from each rear plate coupling portion 21b. By comprising in this way, the stress added to the rear surface board 11 from each rear surface board coupling | bond part 21b comes to be spread | distributed more widely via each radial direction extension part 14a. In this case, the length of each radially extending portion 14a is preferably 0.5 to 5.0 times, particularly 1.0 to 3.0 times the length of the rear plate coupling portion 21b facing each other. Further, it is preferably 2.0 to 3.0 times. Each of the radially extending portions 14a may extend to the outer peripheral side of the rear plate 11 (up to the side plate 13 at the longest) from the mount coupling region 11a. In this embodiment, as shown in FIG. 1F, the thickness of each radial extending portion 14a is equal to the thickness of each rear plate coupling portion 21b. The rear end section of each radially extending portion 14a overlaps the entire front end section. Therefore, in this embodiment, the projections formed by projecting the rear end cross section of each radial extending portion 14a and the front end cross section of each rear plate coupling portion 21b onto the projection plane are substantially different from FIG. 1D. It is as if lines other than the outline of the radially extending portion 14a have been deleted.
　図１Ｂ，Ｄの通り、この実施形態では、マウント部結合領域１１ａよりも後面板１１の外周側（マウント部非結合領域）には、連結片１４として、後面板１１及び前面板１２に沿って一方向（以下、便宜上、縦方向という。）に延在した複数個の縦方向延在部１４ｂと、後面板１１及び前面板１２に沿って該縦方向延在部１４ｂと直交方向（以下、便宜上、横方向という。）に延在した複数個の横方向延在部１４ｃとが設けられている。これらの縦方向延在部１４ｂと横方向延在部１４ｃとは、互いに格子状に交わるように配置され、溶接等の結合手段により結合されている。なお、該縦方向延在部１４ｂと横方向延在部１４ｃとの交差角度は直角に限定されない。また、該縦方向延在部１４ｂ及び横方向延在部１４ｃとさらに斜交する連結片が存在していてもよい。 As shown in FIGS. 1B and 1D, in this embodiment, a connecting piece 14 is provided along the rear plate 11 and the front plate 12 on the outer peripheral side of the rear plate 11 (mount unit non-bonded region) with respect to the mount unit connecting region 11 a. A plurality of longitudinally extending portions 14b extending in one direction (hereinafter referred to as the longitudinal direction for convenience), and the longitudinally extending portions 14b along the rear surface plate 11 and the front plate 12 (hereinafter referred to as the vertical direction). A plurality of laterally extending portions 14c extending in the lateral direction for convenience) are provided. The longitudinally extending portion 14b and the laterally extending portion 14c are arranged so as to cross each other in a lattice shape, and are coupled by a coupling means such as welding. In addition, the crossing angle between the longitudinally extending portion 14b and the laterally extending portion 14c is not limited to a right angle. Further, there may be a connecting piece that further obliquely intersects with the longitudinally extending portion 14b and the laterally extending portion 14c.
　マウント部結合領域１１ａは、１対の縦方向延在部１４ｂ及び１対の横方向延在部１４ｃによって取り囲まれている。各放射方向延在部１４ａの放射方向の先端側は、これらの縦方向延在部１４ｂ及び横方向延在部１４ｃのいずれかに対し溶接等の結合手段により結合されている。 The mount part coupling region 11a is surrounded by a pair of longitudinally extending parts 14b and a pair of laterally extending parts 14c. The distal end side of each radial extending portion 14a in the radial direction is coupled to either the longitudinal extending portion 14b or the lateral extending portion 14c by a coupling means such as welding.
　マウント部結合領域１１ａ内には、マウント部２０の後面板結合部２１ｂの前方に位置しない連結片１４が存在してもよい。例えばこの実施形態では、マウント部結合領域１１ａの補強のために、一部の放射方向延在部１４ａ，１４ａ同士の間にも縦方向延在部１４ｂが配材されている。また、互いに隣り合っているが、各々の放射方向の先端側が共通の縦方向延在部１４ｂ又は横方向延在部１４ｃに結合されていない放射方向延在部１４ａ，１４ａ同士の間には、これらの先端部同士を連結するように先端連結用連結片１４ｄが配材されている。ただし、連結片１４の配置はこれに限定されない。 In the mount unit coupling region 11a, there may be a connecting piece 14 that is not positioned in front of the rear plate coupling unit 21b of the mount unit 20. For example, in this embodiment, in order to reinforce the mount portion coupling region 11a, the longitudinally extending portion 14b is also distributed between some of the radially extending portions 14a and 14a. In addition, between the radially extending portions 14a, 14a that are adjacent to each other but whose radial ends are not coupled to the common longitudinally extending portion 14b or the laterally extending portion 14c, 14 d of tip connection parts are distributed so that these tip parts may be connected. However, the arrangement of the connecting pieces 14 is not limited to this.
　受衝部材１０及びマウント部２０は、それぞれ、全体が鉄等の剛性材料により構成されている。受衝部材１０及びマウント部２０の具体的な材質や、各部の肉厚等の寸法は、該受衝部材１０に加えられる荷重の最大許容値等に応じて適宜設定される。 Each of the impact receiving member 10 and the mount portion 20 is made of a rigid material such as iron. Specific materials of the impact receiving member 10 and the mount portion 20 and dimensions such as the thickness of each portion are appropriately set according to the maximum allowable value of the load applied to the impact receiving member 10.
　このように構成された受衝部材１０が防舷材本体２の前面部に設置された防舷材１において、該受衝部材１０に対し船舶等の接岸物が接触した場合、該接岸物からの荷重により、防舷材本体２は、その軸心線方向の途中部を拡径させつつ該軸心線方向に潰れるように変形して衝撃を吸収する。その際、受衝部材１０の後退に伴ってマウント部２０が防舷材本体２の内方へ潜り込むことにより、防舷材本体に直に受衝部材が取り付けられた防舷材に比べて、防舷材本体２の変形量が大きなものとなる。これにより、防舷材１は、より高い衝撃吸収性能を発揮することができる。 In the fender 1 in which the receiving member 10 configured in this manner is installed on the front surface of the fender body 2, when a berthing thing such as a ship comes into contact with the receiving member 10, With this load, the fender main body 2 is deformed so as to be crushed in the axial direction while expanding the middle part in the axial direction, and absorbs the impact. At that time, the mount 20 sinks inward of the fender main body 2 as the impact receiving member 10 is retracted, so that the fender is directly attached to the fender main body. The amount of deformation of the fender main body 2 is large. Thereby, the fender 1 can exhibit higher impact absorption performance.
この受衝部材１０にあっては、前記投影面内において、各放射方向延在部１４ａの後端断面のうち各後面板結合部２１ｂの前端断面と重なった部分の面積は、各々が重なった後面板結合部２１ｂの前端断面の全体の面積の２５％以上となっている（特に好ましくは各後面板結合部２１ｂの前端断面の略全体に各放射方向延在部１４ａの後端断面が重なっている）ので、受衝部材１０が前方から荷重を受けたときに各後面板結合部２１ｂから後面板１１に加えられる応力をより効率よく各放射方向延在部１４ａによって分散させることができる。これにより、受衝部材１０の各部の要求強度を比較的低く設定することが可能となる。その結果、受衝部材１０の軽量化や、受衝部材１０の材料コストの削減を実現することが可能となる。 In the impact receiving member 10, the areas of the portions of the rear end cross section of each radial extending portion 14a that overlap the front end cross section of each rear plate coupling portion 21b in the projection plane overlap each other. It is 25% or more of the entire area of the front end cross section of the rear plate coupling portion 21b (particularly preferably, the rear end cross section of each radially extending portion 14a overlaps substantially the entire front end cross section of each rear plate coupling portion 21b. Therefore, when the impact receiving member 10 receives a load from the front, the stress applied to the rear plate 11 from each rear plate coupling portion 21b can be more efficiently dispersed by each radial extending portion 14a. Thereby, the required strength of each part of the impact receiving member 10 can be set relatively low. As a result, it is possible to reduce the weight of the impact receiving member 10 and reduce the material cost of the impact receiving member 10.
　この実施形態では、マウント部２０の各後面板結合部２１ｂと、連結片１４の各放射方向延在部１４ａとは、それぞれ後面板１１に沿って軸状部２１ａから放射状に延在したものとなっている。これにより、受衝部材１０が前方から荷重を受けたときに各後面板結合部２１ｂから後面板１１に加えられる応力がこれらの後面板結合部２１ｂ及び放射方向延在部１４ａに沿って放射状に広範囲に分散されるため、後面板１１に加えられる応力を一層効率よく分散させることができる。 In this embodiment, each rear plate coupling portion 21b of the mount portion 20 and each radial extending portion 14a of the connecting piece 14 extend radially from the shaft-like portion 21a along the rear plate 11, respectively. It has become. Thereby, when the impact receiving member 10 receives a load from the front, the stress applied to the rear plate 11 from each rear plate coupling portion 21b radiates along the rear plate coupling portion 21b and the radially extending portion 14a. Since it is dispersed over a wide range, the stress applied to the rear plate 11 can be more efficiently dispersed.
　上記の実施形態は本発明の一例であり、本発明は図示以外の構成をもとりうる。例えば、マウント部２０の台座部２１は、軸状部２１ａが省略され、各後面板結合部２１ｂが防舷材本体２の軸心位置から後面板１１の後面に沿って放射状に延在した構成であってもよい。 The above-described embodiment is an example of the present invention, and the present invention may have a configuration other than that illustrated. For example, the pedestal portion 21 of the mount portion 20 is configured such that the shaft-shaped portion 21 a is omitted, and each rear plate coupling portion 21 b extends radially from the axial center position of the fender body 2 along the rear surface of the rear plate 11. It may be.
　上記の実施形態では、各後面板結合部２１ｂは、全体が後面板１１の後面に沿って軸状部２１ａから放射方向に延在したものとなっているが、該放射方向以外の方向に延在していてもよい。また、上記の実施形態では、各後面板結合部２１ｂは、全体が後面板１１の後面に沿って一直線状に延在しているが、Ｌ字状やＴ字状、Ｙ字状、Ｘ字状、ジグザグ状、円弧状など、一直線状以外の形状に延在していてもよい。例えば、各後面板結合部２１ｂは、少なくとも一部が軸状部２１ａの周方向に円弧状に延在していてもよい。 In the above embodiment, each rear plate coupling portion 21b extends in a radial direction from the shaft-shaped portion 21a along the rear surface of the rear plate 11, but extends in a direction other than the radial direction. May be present. In the above embodiment, each of the rear plate coupling portions 21b extends in a straight line along the rear surface of the rear plate 11, but is L-shaped, T-shaped, Y-shaped, X-shaped. The shape may extend in a shape other than a straight line, such as a shape, a zigzag shape, or an arc shape. For example, at least a part of each rear plate coupling portion 21b may extend in an arc shape in the circumferential direction of the shaft-shaped portion 21a.
　上記の実施形態では、軸状部２１ａの前端側が受衝部材１０の内部に配置されているが、軸状部２１ａの前端側を受衝部材１０の内部に配置する代わりに、該軸状部２１ａと略同一径の略円筒状の連結片を該軸状部２１ａと同軸状に受衝部材１０の内部に配材してもよい。 In the above embodiment, the front end side of the shaft-shaped portion 21a is disposed inside the impact receiving member 10, but instead of disposing the front end side of the shaft-shaped portion 21a inside the impact receiving member 10, the shaft-shaped portion You may distribute | circulate the substantially cylindrical connection piece of the substantially same diameter as 21a in the inside of the impact receiving member 10 coaxially with this axial part 21a.
　上記の実施形態では、軸状部２１ａは、断面円形状となっているが、軸状部２１ａの断面形状はこれに限定されない。軸状部２１ａは、例えば断面楕円形や断面多角形状などであってもよい。また、上記の実施形態では、軸状部２１ａは、内部に空洞を有した筒状となっているが、内部に空洞を有しない中実な棒状であってもよい。 In the above embodiment, the shaft-shaped portion 21a has a circular cross section, but the cross-sectional shape of the shaft-shaped portion 21a is not limited to this. The shaft-shaped portion 21a may be, for example, an elliptical cross section or a polygonal cross section. Further, in the above-described embodiment, the shaft-shaped portion 21a has a cylindrical shape having a hollow inside, but may be a solid rod shape having no hollow inside.
　後面板１１の後面に２個以上のマウント部２０が設けられてもよい。 Two or more mount portions 20 may be provided on the rear surface of the rear plate 11.
［比較例］
　図２Ａ～図２Ｃの比較例に係る防舷材１Ａにおいては、受衝部材１０Ａ内に配置された連結片１４Ａは、特許文献１と同様に、全体が、互いに格子状に交わった複数個の縦方向延在部１４ｂ及び横方向延在部１４ｃのみから構成されている。 [Comparative example]
In the fender 1A according to the comparative example of FIG. 2A to FIG. 2C, the connecting piece 14A arranged in the impact receiving member 10A has a plurality of pieces that intersect with each other in the form of a lattice, as in Patent Document 1. It is comprised only from the vertical direction extension part 14b and the horizontal direction extension part 14c.
　この受衝部材１０Ａを防舷材本体２に連結したマウント部２０Ａは、台座部２１Ａの軸状部２１ａ’の前端面が各後面板結合部２１ｂの前端面と面一状となっている。この軸状部２１ａ’の前端側は、受衝部材１０Ａの内部に配置されることなく、後面板１１の後面に突き当てられて溶接等の結合手段により該後面板１１に結合されている。 In the mount portion 20A in which the impact receiving member 10A is connected to the fender body 2, the front end surface of the shaft portion 21a 'of the pedestal portion 21A is flush with the front end surface of each rear plate coupling portion 21b. The front end side of the shaft-shaped portion 21a 'is not disposed inside the impact receiving member 10A, but is abutted against the rear surface of the rear surface plate 11, and is coupled to the rear surface plate 11 by a coupling means such as welding.
　この防舷材１Ａのその他の構成は、実施形態に係る防舷材１と同様であり、図２Ａ～図２Ｃにおいて図１Ａ～図１Ｆと同一符号は同一部分を示している。 Other configurations of the fender 1A are the same as those of the fender 1 according to the embodiment, and in FIGS. 2A to 2C, the same reference numerals as those in FIGS. 1A to 1F denote the same parts.
　この防舷材１Ａにあっては、図２Ｂの通り、後面板１１のマウント部結合領域１１ａにも、直交２方向にそれぞれ延在した縦方向延在部１４ｂ及び横方向延在部１４ｃが配設されている。各縦方向延在部１４ｂ及び横方向延在部１４ｃは、マウント部２０Ａの各後面板結合部２１ｂの全体には対向せず、各後面板結合部２１ｂの前方を横切っている部分が局所的に対向したものとなっている。かかる防舷材１Ａにあっては、連結片１４（縦方向延在部１４ｂ及び横方向延在部１４ｃ）の後端断面と各後面板結合部２１ｂの前端断面とを、防舷材本体２の軸心線と略直交する共通の投影面に投影した場合に、該投影面内において、該連結片１４の後端断面のうち各後面板結合部２１ｂの前端断面と重なった部分の面積は、各後面板結合部２１ｂの前端断面の全体の面積の２５％に満たない。 In this fender 1A, as shown in FIG. 2B, a longitudinally extending portion 14b and a laterally extending portion 14c respectively extending in two orthogonal directions are also arranged in the mount portion coupling region 11a of the rear plate 11. It is installed. Each of the longitudinally extending portions 14b and the laterally extending portions 14c does not face the entire rear surface plate coupling portion 21b of the mount portion 20A, and a portion crossing the front of each rear surface plate coupling portion 21b is locally present. It has become opposite to. In such a fender 1A, the rear end cross section of the connecting piece 14 (longitudinal extending portion 14b and lateral extending portion 14c) and the front end cross section of each rear plate coupling portion 21b are connected to the fender main body 2. When projected onto a common projection plane that is substantially orthogonal to the axial center line, the area of the portion of the rear end cross section of the connecting piece 14 that overlaps the front end cross section of each rear plate coupling portion 21b in the projection plane is , Less than 25% of the total area of the front end cross section of each rear plate coupling portion 21b.
［荷重負荷実験］
　実施形態に係る防舷材１の受衝部材１０と、比較例に係る防舷材１Ａの受衝部材１０Ａとにそれぞれ前方から同一の条件で荷重を加え、後面板１１に対しマウント部２０，２０Ａの各後面板結合部２１ｂから加えられた応力の分布をＦＥＭ解析した（使用プログラム：汎用構造解析プログラムＭＳＣ．ＭａｒｃＭｅｎｔａｔ、要素数：受衝部材（前面板＋後面板＋連結片＋マウント部）１６０００個、防舷材本体４０００個、要素タイプ：８節点ソリッド要素）。 [Load test]
A load is applied to the impact receiving member 10 of the fender 1 according to the embodiment and the impact receiving member 10A of the fender 1A according to the comparative example from the front under the same conditions. FEM analysis was performed on the stress distribution applied from each of the rear plate coupling portions 21b of 20A (use program: general-purpose structural analysis program MSC.MarcMentat, number of elements: impact member (front plate + rear plate + connecting piece + mount portion) 16000 pieces, fender body 4000 pieces, element type: 8-node solid element).
　図３Ａ，図３Ｂにそれぞれの測定結果を示す。 3A and 3B show the measurement results.
［考察］
　図３Ａの通り、実施形態に係る防舷材１にあっては、後面板１１に加えられた応力のピーク領域は、放射方向延在部１４ａに沿って広い範囲にわたっている。これにより、応力が放射方向延在部１４ａにより効果的に分散されていることが分かる。 [Discussion]
As shown in FIG. 3A, in the fender 1 according to the embodiment, the peak region of the stress applied to the rear plate 11 extends over a wide range along the radially extending portion 14a. Thereby, it turns out that stress is effectively disperse | distributed by the radial direction extension part 14a.
　これに対し、図３Ｂの通り、比較例に係る防舷材１Ａにあっては、後面板１１に加えられた応力のピーク領域は、各後面板結合部２１ｂと縦方向延在部１４ｂ又は横方向延在部１４ｃとの交点に集中していることがわかる。そのため、比較例に係る防舷材１Ａにあっては、このように応力が集中しても十分に耐えうるように後面板１１を高強度とする必要があり、重量及び材料コストが嵩む。 On the other hand, as shown in FIG. 3B, in the fender 1A according to the comparative example, the peak areas of the stress applied to the rear plate 11 are the rear plate coupling portions 21b and the longitudinally extending portions 14b or the lateral portions. It turns out that it concentrates on the intersection with the direction extension part 14c. Therefore, in the fender 1A according to the comparative example, it is necessary to make the rear plate 11 high in strength so that it can sufficiently withstand even if stress is concentrated in this way, and the weight and material cost increase.
　特願２０１２－２４５１８０の開示はその全体が参照により本明細書に取り込まれる。本明細書に記載された全ての文献、特許出願、および技術規格は、個々の文献、特許出願、および技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に参照により取り込まれる。 The entire disclosure of Japanese Patent Application No. 2012-245180 is incorporated herein by reference. All documents, patent applications, and technical standards mentioned in this specification are to the same extent as if each individual document, patent application, and technical standard were specifically and individually described to be incorporated by reference, Incorporated herein by reference.

Claims (8)

  1. 　防舷材本体の前面部に設置される受衝部材であって、
    　防舷材本体側に位置する後面板と、
    　該後面板に対峙する前面板と、
    　該前面板と後面板とを連結した連結片と、
    　該後面板の後面に結合した後面板結合部を有するマウント部と
    を備えた受衝部材において、
    　該連結片の後端断面と、該後面板結合部の前端断面とを、防舷材本体の軸心線と略直交する共通の投影面に投影した場合に、該投影面内において、該連結片の後端断面のうち該後面板結合部の前端断面と重なった部分の面積は、該後面板結合部の前端断面の全体の面積の２５％以上である受衝部材。     An impact receiving member installed on the front surface of the fender body,
    A rear plate located on the fender body side,
    A front plate facing the rear plate;
    A connecting piece connecting the front plate and the rear plate;
    In the receiving member comprising a mount portion having a rear plate coupling portion coupled to the rear surface of the rear plate,
    When the rear end cross section of the connecting piece and the front end cross section of the rear plate coupling portion are projected onto a common projection plane that is substantially orthogonal to the axial center line of the fender body, the connection is within the projection plane. An impact receiving member in which the area of the rear end cross section of the piece that overlaps the front end cross section of the rear plate coupling portion is 25% or more of the total area of the front end cross section of the rear plate coupling portion.
  2. 　請求項１において、
    　前記投影面内において、前記後面板結合部の前端断面の略全体に前記連結片の後端断面が重なっている受衝部材。     In claim 1,
    An impact receiving member in which the rear end section of the connecting piece overlaps substantially the entire front end section of the rear plate coupling portion in the projection plane.
  3. 　請求項１又は２において、前記後面板結合部の少なくとも一部と、その前方位置に存在した前記連結片の少なくとも一部とは、前記後面板に沿って該後面板の所定位置からの放射方向に延在している受衝部材。 3. The radial direction from a predetermined position of the rear plate along the rear plate according to claim 1, wherein at least a part of the rear plate coupling portion and at least a part of the connecting piece present at a front position thereof are arranged along the rear plate. The receiving member that extends to
  4. 　請求項１ないし３のいずれか１項において、前記マウント部は、前記後面板結合部の後端が連なる取付座部を有している受衝部材。 4. The impact receiving member according to any one of claims 1 to 3, wherein the mount portion has a mounting seat portion in which a rear end of the rear plate coupling portion is continuous.
  5. 　請求項４において、前記マウント部は、前記後面板から後方に延出し、後端が前記取付座部に連なる軸状部を有しており、
    　前記後面板結合部の少なくとも一部は、該軸状部から該後面板の後面に沿って放射方向に延在している受衝部材。     In Claim 4, the mount portion has a shaft-like portion that extends rearward from the rear surface plate and has a rear end continuous to the mounting seat portion.
    An impact receiving member in which at least a part of the rear plate coupling portion extends radially from the shaft-like portion along the rear surface of the rear plate.
  6. 　請求項５において、前記軸状部は、前記後面板を貫いて前記前面板と前記取付座部とを連結している受衝部材。 6. The impact receiving member according to claim 5, wherein the shaft-like portion penetrates the rear plate and connects the front plate and the mounting seat portion.
  7. 　請求項１ないし６のいずれか１項において、前記連結片の後端に、前記後面板の前面に重なるフランジ部が設けられている受衝部材。 The impact receiving member according to any one of claims 1 to 6, wherein a flange portion is provided at a rear end of the connecting piece so as to overlap a front surface of the rear plate.
  8. 　請求項１ないし７のいずれか１項に記載の受衝部材が防舷材本体の前面部に設置された防舷材。 A fender having the impact receiving member according to any one of claims 1 to 7 installed on a front surface portion of the fender body.
PCT/JP2013/080153 2012-11-07 2013-11-07 Fender and impact-bearing member thereof WO2014073618A1 (en)

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CN104554654A (en) * 2014-12-18 2015-04-29 福建省马尾造船股份有限公司 Ship body fender beam structure
CN104554653A (en) * 2014-12-18 2015-04-29 福建省马尾造船股份有限公司 Fender structure for offshore mobile platform

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CN104005332B (en) * 2014-05-30 2016-03-02 江苏博泓新材料科技有限公司 There is the anticollision device of pier of dispersing impact forces function
CN106049366A (en) * 2016-05-23 2016-10-26 中交第航务工程局有限公司 Construction technique for fender positioning plate
CN107792315B (en) * 2017-10-18 2019-12-13 天津魁普重工机械有限公司 A parallel translation backplate structure for boats and ships are berthhed
CN108891552A (en) * 2018-06-21 2018-11-27 招商局重工（江苏）有限公司 A kind of jack-up unit towage protective device

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Publication number Priority date Publication date Assignee Title
CN104554654A (en) * 2014-12-18 2015-04-29 福建省马尾造船股份有限公司 Ship body fender beam structure
CN104554653A (en) * 2014-12-18 2015-04-29 福建省马尾造船股份有限公司 Fender structure for offshore mobile platform

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AU2013342498A1 (en) 2015-05-21
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AU2013342498B2 (en) 2016-05-19
CN104769186A (en) 2015-07-08

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