JP2002088738A - Fender - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fender capable of being quickly approached with initial low reaction force in the case of approaching. SOLUTION: The fender integrally formed by elastic body such as a rubber or the like includes an impact receiving section 13 having an approximately flat impact receiving surface 20, a pair of first impact bearing sections 14a and 14b, a pair of mounting sections 15a and 15b connected to the ends of the first impact bearing sections 14a and 14b so as to extend to the outside and mounted to a quaywall or the like and a second impact bearing section 19 connected to the center of the impact receiving section 13 and extending to the direction of a mounted body of the quaywall or the like, and a space 21 is formed between the end of the second impact bearing section 19 and a plane consisting of mounting surfaces 18a and 18b of the mounting sections 15a and 15b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fender, and more particularly to a fender for fishing ports or the like which is required to have durability against shearing force.

[0002]

2. Description of the Related Art FIG. 8 is a perspective view showing a schematic shape of a conventional fender for a fishing port, and FIG. 9 is a sectional view taken along line IX-IX of FIG.

Referring to these drawings, fender 61 is integrally formed of a rubber elastic body, and has a receiving portion 63 having a receiving surface 70 which is substantially flat, and two sides of receiving portion 63. A pair of connected support portions 64a, 64b, and a pair of mounting portions 65a, connected to respective ends of the support portions 64a, 64b for mounting to a mounting body such as a quay. And a mounting portion 65b. The mounting portions 65a,
Each of the mounting portions 65b has a plurality of bolt holes 66 for mounting mounting bolts for mounting the fender 61 to a quay or the like.
Are formed.

Normally, the fender 61 is attached to a quay or the like in a state where the longitudinal direction thereof is vertical, and the ship to be berthed is received by the receiving portion 63.

[0005]

The above-mentioned conventional fenders for fishing ports have a thick structure in order to increase the durability against external force (shear force). Therefore, the initial reaction force increases, so it is necessary to carry out very careful berthing work such as reducing the berthing speed when the ship berthing.
Quick berthing is difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a fender which has a small initial reaction force and a small force for pushing back a ship and enables quick berthing. Aim.

[0007]

Means for Solving the Problems In order to achieve the above object, the invention according to claim 1 is a fender integrally formed of an elastic body such as rubber, and comprises a receiving portion, A pair of first supporting portions connected to both sides of the receiving portion, a pair of mounting portions connected to respective ends of the first supporting portion for mounting on the mounted body, and a center of the receiving portion; And a second support portion extending in the direction of the body to be mounted, wherein a space is provided between an end of the second support portion and a plane formed by each mounting surface of the mounting portion. .

[0008] With this configuration, the displacement is larger than that of the fender without the second support portion for the same energy to be absorbed at the time of berthing.

According to a second aspect of the present invention, in the configuration of the first aspect, a recess is formed in a receiving surface of the receiving portion corresponding to a portion to which the second supporting portion is connected. .

[0010] According to this structure, the displacement at the time of berthing becomes larger than that of the case where no dent is formed.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the ratio of the height L of the space, the width W of the receiving portion, and the height H of the receiving portion is determined. 20 to 240-30
0 to 100.

With this configuration, the ratio of the width W of the receiving surface to the height H is larger than that of the fender having no second support portion for the same energy to be absorbed.

[0013]

As described above, according to the first aspect of the present invention, since the displacement at the time of berthing becomes larger for the same absorbed energy, the reaction force against the berthing ship is reduced, and damage to the marine vessel is reduced. The likelihood decreases. Therefore, the speed of the berthing of the ship can be increased, and a quick berthing can be realized.

According to the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, since the reaction force at the time of berthing becomes smaller due to the depression of the receiving surface, the speed at which the ship can berth can be increased. can do.

According to the third aspect of the present invention, in addition to the effect of the first or second aspect, the ratio of the width of the receiving surface to the height is increased, so that the stress on the ship at the receiving surface is increased. Can be made smaller, so that damage to the ship can be further prevented.

[0016]

FIG. 1 is a perspective view showing a schematic shape of a fender for a fishing port according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II-II of FIG. is there.

Referring to these drawings, fender 11 is integrally formed of an elastic body such as rubber, plastic such as polyurethane having elasticity, or the like, and has a substantially flat receiving surface 20. Part 13 and a pair of first supporting parts 14 connected to both sides of the receiving part 13 and extending obliquely rearward.
a, a first support portion 14b, and a pair of first support portions 14a and 14b, which are connected so as to extend outward from respective ends of the first support portion 14a and the first support portion 14b, and are attached to an attached body such as a quay. Mounting part 1
5a, a mounting portion 15b, and a second support portion 19 connected to the central portion of the receiving portion 13 and extending in the direction of the body to be mounted.

The second supporting portion 19 on the receiving surface 20 of the receiving portion 13
A recess 17 extending in the axial direction is formed at a position corresponding to the connection portion. Also, the tip of the second support portion 19 and the mounting surface 15a of the mounting portion 15a, the mounting surface 15a of the mounting portion 15b, and the mounting surface 1
A space 21 is provided between the plane 21a and the plane 8b.

As the dimensions of the fender 11 in this embodiment, the width W of the receiving portion 13 is 240 mm, the height H of the receiving portion 13 is 100 mm, and the height L of the space 21 is 20 mm. Has become. The thickness _{t 1} of the impact receiving portion 13, the thickness of the thickness _{t 2} and a second支衝portion 19 of the first支衝portion 14a t
₃ are all 25 mm. Thus, in this embodiment, W / H is 2.4, but this value may be selected in the range of 2.4 to 3.0 as described later.

A plurality of bolt holes 16 for inserting mounting bolts are formed in the mounting portions 15a and 15b, and an iron plate or the like (not shown) is provided around the bolt holes 16 in the mounting portions 15a and 15b. Embedded in

The thickness of the receiving portion 13 and the first supporting portion 14 is set smaller than those of the conventional fender shown in FIGS.

FIG. 3 is a diagram showing a deformed state of the fender shown in FIGS. 1 and 2 during compression.

FIG. 3A shows that the fender 11 is mounted on the installation surface 23.
FIG. 4 is a cross-sectional view illustrating a state where the compression ratio is 0%, which is installed on the upper side and the press surface 24 has not yet been lowered.

FIG. 3B is a view showing a state where the fender 11 is compressed by 10%. In this state, the receiving portion 13 is pressed downward by the press surface 24, and the first supporting portion 14a and the first supporting portion 14b are deformed so as to be bent outward. However, in this state, a space of S dimension is still maintained between the tip of the second support portion 19 and the installation surface 23, and the second support portion 19 is in contact with the installation surface 23. There is no state. Further, the shape of the recess 17 formed on the receiving surface 20 of the receiving portion 13 still remains, and the recess is in a state where it can be visually observed.

FIG. 3C shows a state in which the press surface 24 is further lowered from this state and compressed by 30%. As is clear from the figure, in this state, the second
The support portion 19 receives a compressive force from the installation surface 23 and the press surface 24. Then, the recess 17 formed on the receiving surface 20 of the receiving portion 13 is planarly deformed like the surrounding state, and the concave shape disappears. On the other hand, the first support portions 14a and 14b are further deformed so as to be bent outward.

As described above, in the fender 11 according to the first embodiment of the present invention, since the receiving portion 13 and the first supporting portion 14 are thin, the second supporting portion 19 is not required. Is the installation surface 23
Until the contact is made, the deformation is facilitated, and the deformation proceeds while the stress on the press surface 24 is small. Further, when the second support portion 19 comes into contact with the installation surface 23, it is possible to transmit a more stable stress to the press surface 24 via the reception portion 13 as compared with a case where the second support portion 19 is not provided. Thus, in the fender of FIG. 1, the displacement is larger than that of the conventional fender in which the second support portion 19 is not formed, and the initial deformation is smaller for the same absorbed energy. The stress on the receiving surface 20 at the time is reduced.

FIG. 4 is a graph showing the relationship between the displacement of the fender and the absorbed energy according to the first embodiment of the present invention in comparison with the conventional fender.

Referring to the figure, the horizontal axis represents the amount of displacement of the fender in the height direction, and the vertical axis represents the absorbed energy of the fender. The fender according to the first embodiment of the present invention is indicated by a solid line, and the fender of the conventional structure is indicated by a broken line.

[0029] Here, when the E absorbed energy required for Seffunabata, the displacement required to absorb it, A ₁ becomes in fender according to the first embodiment, the conventional structure in any if the _{a 0.} Here, A ₁ > A ₀ . That is, the displacement when absorbing the same energy is larger in the fender according to the first embodiment of the present invention than in the conventional fender.

FIG. 5 is a graph showing the relationship between the reaction force generated in the fender and the displacement.

Referring to the figure, the horizontal axis represents the amount of displacement of the fender in the height direction, and the vertical axis represents the reaction force applied from the fender to a berthing such as a ship. Have been. The solid line is the first
The broken line is due to the conventional fender.

[0032] and A ₁ the displacement of the fender according to the displacement that is, the first embodiment shown here in FIG. 4, when plotted this displacement of the conventional marine fender as A _0, the reaction force generated in the marine fender according to the first embodiment becomes P _1, in the conventional fender becomes P _0. That is, P
_{1> P 0} become. This is because the fender according to the first embodiment has a smaller reaction force applied to the berthing such as a ship from the fender when absorbing the same energy, compared to the conventional fender. Means

As described above, in the fender according to the first embodiment, since the initial reaction force at the time of berthing is small, it is possible to increase the berthing speed as compared with the related art, and as a result, Can be shortened.

FIG. 6 is a perspective view showing the external shape of the fender according to the second embodiment of the present invention, and FIG. 7 is a sectional view taken along the line VII-VII of FIG.

Referring to these figures, the basic shape is the same as that of the first embodiment, but in this embodiment, the receiving surface 20 of the receiving portion 13 has a recess. The point that is not formed, the receiving part 13, the first supporting part 14a,
The difference is that the mutual connecting portions of the respective portions of the first support portion 14b and the second support portion 19 are not rounded but angular as in the previous embodiment. The structure, material, and dimensional relationship of the other parts are the same as in the previous embodiment, and therefore, description thereof will not be repeated.

The characteristics of the fender according to the second embodiment are shown in the graphs of FIGS. That is, in FIG. 4, the fender according to the second embodiment is shown by a dashed line, and is located between the fender according to the first embodiment and the conventional fender. It is. Therefore, if the same absorbed energy is E, the second
The displacement A ₂ due to the fender of the embodiment is A ₁ > A ₂ > A
₀ .

Similarly, in FIG. 5, the fender according to the second embodiment is indicated by a dashed line, which is also located between the fender according to the first embodiment and the conventional fender. are doing. When the plotting displacement _{A 2} obtained in FIG. 4, the reaction force _{P 2} caused by the displacement _{P 0> P} 2> P
₁ is obtained. As a result, the fender having no dent formed at the position of the receiving surface 20 of the receiving portion 13 corresponding to the portion to which the second support portion 19 is connected has a dent formed. Although the generated reaction force is larger, the generated reaction force is smaller than that of the fender in which the second support portion 19 is not formed.

It should be noted that it is considered that the connection portion of each portion is formed to have a round shape so that the connection portion is easily deformed by the same force. As a result, it is possible to further reduce the reaction force generated for the same absorption energy. .

In the case of the conventional fender, the ratio of the width of the receiving surface to the height is about 1.2 to 1.8. However, the first and second embodiments are not limited. In the case of the fender having the second supporting portion 19 provided on the back surface of the receiving portion 13 as in the case of the fender, the deformation can be stabilized, so that the ratio can be set to 2.4 to 3.0. Therefore, the receiving surfaces having the same height can be made wider, and the reaction force per unit area can be further reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an external shape of a fender according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a diagram showing a deformed state of the fender according to the first embodiment of the present invention at the time of compression.

FIG. 4 is a graph showing a relationship between absorbed energy and displacement of the fender.

FIG. 5 is a diagram illustrating a relationship between a generated reaction force of the fender and displacement.

FIG. 6 is a perspective view showing an external shape of a fender according to a second embodiment of the present invention.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;

FIG. 8 is a perspective view showing the appearance of a conventional fender.

FIG. 9 is a sectional view taken along line IX-IX of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Fender 13 ... Reception part 14 ... 1st support part 15 ... Mounting part 17 ... Depression 18 ... Mounting surface 19 ... 2nd support part 20 ... Reception surface In addition, the same code | symbol in each figure is the same or The corresponding parts are shown.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masao Takemoto 1058 Nakao Uozumi-cho Akashi City Inside Shibata Industrial Co., Ltd. (72) Inventor Koji 1058 Nakao Uozumi-cho Akashi City Inside Shibata Industrial Co., Ltd. (72) Inventor Takayasu Hasegawa 1058 Nakao, Uozumi-cho, Akashi City Inside Shibata Industry Co., Ltd.

Claims (3)

[Claims] 1. A fender integrally formed of an elastic body such as rubber, comprising: a receiving portion; a pair of first supporting portions connected to both sides of the receiving portion; A pair of attachment portions connected to each end of the one support portion and attached to the attached body; and a second support portion connected to the center of the receiving portion and extending in the direction of the attached body. A fender, wherein a space is provided between an end portion of the second support portion and a plane formed by each mounting surface of the mounting portion. 2. The receiving surface of the receiving portion corresponding to a portion to which the second supporting portion connects is formed with a recess.
The described fender. 3. The ratio of the height L of the space, the width W of the receiving portion, and the height H of the receiving portion is 20: 240 to 300: 100. The fender described in the above item.