WO2016163452A1

WO2016163452A1 - Fender device

Info

Publication number: WO2016163452A1
Application number: PCT/JP2016/061383
Authority: WO
Inventors: 謙太郎清水
Original assignee: 株式会社ブリヂストン
Priority date: 2015-04-07
Filing date: 2016-04-07
Publication date: 2016-10-13
Also published as: BR112017021430A2; JPWO2016163452A1

Abstract

Provided is a fender device (10) that comprises an impact receiving plate (11) facing the quay side, an intermediate plate disposed between the impact receiving plate (11) and the quay side, and a pair of supports (13) that each connect the intermediate plate to the quay side and the impact receiving plate (11) and that are directly coupled across the intermediate plate. A plurality of pairs of supports (13) is disposed in the surface direction D which follows the front and rear faces of the impact receiving plate (11). In the planar view of the impact receiving plate (11), the interval I between the centers of supports (13) that are mutually adjacent in the surface direction D is at least the minimum distance X_min, where the distance X, in the planar view of the impact receiving plate (11), is the shortest distance from the center of the support (13) to the peripheral edge (11a) of the impact receiving plate (11) and the minimum distance X_min is the shortest distance X from among the distances X for each of the plurality of supports (13).

Description

Fender

The present invention relates to a fender.
This application claims priority based on Japanese Patent Application No. 2015-078515 filed in Japan on April 7, 2015, the contents of which are incorporated herein by reference.

Conventionally, for example, a fender device described in Patent Document 1 below is known. The fender is divided into an impact plate portion facing the quay wall surface, an intermediate plate portion disposed between the quay wall surface and the impact plate portion, and an intermediate plate portion, the quay wall surface and the impact plate portion. A pair of support portions that are connected and directly connected to each other via an intermediate plate portion. In the fender, guide means for guiding the compression deformation of the support portion is provided separately from the impact plate portion, the intermediate plate portion, and the support portion. Since the compressive deformation of the support portion is guided by the guide means, the shear deformation of the support portion is suppressed.

Japanese Unexamined Patent Publication No. 63-219715

However, there is room for improvement in simplification in the conventional protection device.

The present invention has been made in view of the above-described circumstances, and an object thereof is to simplify the fender.

In order to solve the above problems, the present invention proposes the following means.
The fender according to the present invention includes an impact receiving plate portion facing the quay wall surface, an intermediate plate portion disposed between the quay wall surface and the impact plate portion, the intermediate plate portion, the quay wall surface, The armoring device includes a pair of support portions that are connected to the receiving plate portion separately and are directly connected to each other via the intermediate plate portion. A plurality of sets of the pair of support portions are arranged in the creeping direction along the front and back surfaces of the receiving plate portion. In a plan view of the impact plate portion, the shortest distance from the center of the support portion to the outer periphery of the impact plate portion is defined as a distance X, and the minimum of the distances X for each of the multiple support portions the distance X in the case of the minimum distance X _min of, in a plan view of the impact receiving plate portion, the distance between the centers of the bearing portion adjacent to each other in said creeping direction is the minimum distance X _min or more.

According to the present invention, simplification can be achieved.

1 is a front view of a fender according to an embodiment of the present invention. It is a top view of the fender shown in FIG. It is a side view of the fender shown in FIG. It is a perspective view of the support part which comprises the fender shown in FIG. It is a top view which shows the state by which the piercing energy was input into the fender apparatus shown in FIG. It is the front view of the fender shown in Drawing 1, and is a figure which added various dimensions.

Hereinafter, a fender apparatus 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5.
The fender 10 is attached to a quay, for example, in order to bring the ship safely into the berth and absorbs the berthing energy of the ship by compressing and deforming it.
As shown in FIGS. 1 to 3, the fender 10 includes an impact plate portion 11 (front frame) facing the quay wall surface Q and an intermediate portion disposed between the quay wall surface Q and the impact plate portion 11. A pair of support portions 13 (fenders) that are connected to each other through the intermediate plate portion 12 by connecting the plate portion 12 (intermediate frame), the intermediate plate portion 12, the quay wall surface Q, and the receiving plate portion 11 to each other. ) And.

The impact plate portion 11 and the intermediate plate portion 12 are arranged in parallel to each other and are arranged in parallel to the quay wall surface Q. The front and back surfaces of the impact receiving plate portion 11 and the intermediate plate portion 12 extend along both the vertical direction D1 and the horizontal direction D2. The impact receiving plate portion 11 and the intermediate plate portion 12 are arranged coaxially with each other, and are formed in a similar shape in a plan view of the impact receiving plate portion 11. The intermediate plate portion 12 is disposed on the inner side of the outer peripheral edge 11 a of the impact receiving plate portion 11 in a plan view of the impact receiving plate portion 11. In the illustrated example, a mooring line 14 is connected to a portion of the receiving plate portion 11 that is located outside the intermediate plate portion 12 in a plan view of the receiving plate portion 11. The mooring cable 14 moores the receiving plate portion 11 to the quay wall surface Q and restricts displacement of the receiving plate portion 11 due to its own weight.

The pair of support portions 13 are arranged on the same straight line with the intermediate plate portion 12 therebetween, and are arranged coaxially with each other. Each central axis O of the pair of support portions 13 is disposed on a common axis. A plurality of pairs of support portions 13 are arranged in a creeping direction D along the front and back surfaces of the impact plate portion 11. In the present embodiment, four pairs of the support portions 13 are arranged so as to form a corner portion A of the rectangle R in the plan view of the impact receiving plate portion 11. The rectangle R has a pair of first sides S1 extending in the vertical direction D1 as the creeping direction D and a pair of second sides S2 extending in the horizontal direction D2 as the creeping direction D. The interval I1 between the centers of the support portions 13 adjacent to each other in the vertical direction D1 (the interval I between the center axes O of the support portions 13) is larger than the interval I2 between the centers of the support portions 13 adjacent to each other in the horizontal direction D2. . In the above-described rectangle R, the first side S1 is longer than the second side S2.

2 and 3, the pair of support portions 13 are formed symmetrically with respect to the intermediate plate portion 12. The pair of support parts 13 are formed by attaching the same support part 13 to the intermediate plate part 12 in a state where the pair of support parts 13 are reversed. The support portion 13 is formed in a cylindrical shape that gradually decreases in diameter as it goes from the quay wall surface Q or the impact plate portion 11 toward the intermediate plate portion 12. In the illustrated example, the support portion 13 is formed in a truncated cone shape (conical shape). The base end portion 13a on the quay wall surface Q side or the impact plate portion 11 side of the support portion 13 has a larger diameter than the distal end portion 13b on the intermediate plate portion 12 side.

As shown in FIG. 4, the support portion 13 is made of an elastic material such as rubber. Attachment members (not shown) are fixed to the base end portion 13a and the tip end portion 13b of the support portion 13, respectively. The attachment member is attached to the quay wall surface Q, the impact plate portion 11 or the intermediate plate portion 12. The attachment member is made of, for example, metal, and is fixed to the quay wall surface Q, the impact plate portion 11 or the intermediate plate portion 12 via a fastening member such as a bolt. The entire mounting member can be embedded in the support portion 13, and a part of the mounting member can be exposed to the outside from the support portion 13.

The support part 13 is compressed and deformed in an orthogonal direction D3 orthogonal to the front and back surfaces of the receiving plate part 11. The bearing 13 is provided with a buckling inducer 15 that induces buckling of the bearing 13 when the bearing 13 is compressed and deformed. The buckling induction portion 15 includes a first buckling induction portion (not shown) provided at the base end portion 13 a of the support portion 13, a second buckling induction portion 16 provided at the distal end portion 13 b of the support portion 13, and Is provided. The first buckling induction portion is formed in a step shape on the inner peripheral surface of the support portion 13. The second buckling induction portion 16 is formed by an annular concave groove formed on the outer peripheral surface of the support portion 13.

Here, as shown in FIG. 1, the distance from the center of the support portion 13 (the central axis of the support portion 13) to the outer peripheral edge 11 a of the impact plate portion 11 in the plan view of the impact plate portion 11 is a distance. Let X be. Further, in a plan view of the impact receiving plate portion 11, of the distance X for each of the plurality of bearings 13, a minimum distance X _min the minimum distance X. Then, in a plan view of the impact receiving plate portion 11, the interval I between the centers of the bearing 13 in the tangential D adjacent to each other is the minimum distance X _min or more is larger than the minimum distance X _min. In this embodiment, all the distances X for each of the plurality of support parts 13 are the same, and the distance X for each support part 13 is the minimum distance _Xmin .

In the plan view of the impact receiving plate portion 11, the distance I between the centers of the support portions 13 adjacent to each other in the creeping direction D is preferably 1.7 times or more the height H of the support portion 13. In this case, it is possible to reliably prevent the support portions 13 adjacent in the creeping direction D from interfering with each other when the support portion 13 is compressed and deformed. Further, the distance X for each of the plurality of support portions 13 is preferably 1.8 times or less the height H of the support portion 13. If the distance X exceeds 1.8 times the height H, the displacement of the impact receiving plate portion 11 may be too large.

As described above, according to the fender device 10 according to the present embodiment, the pair of support portions 13 are directly connected via the intermediate plate portion 12. Therefore, the reaction force is halved compared to the case where the same number of support portions 13 as the support portions 13 used in the fender 10 are arranged in parallel without being directly connected as in the pair of support portions 13. The energy absorption capacity can be equally ensured while suppressing.

Further, in a plan view of the impact receiving plate portion 11, the interval I between the centers of the bearing 13 in the tangential D adjacent to each other is the minimum distance X _min or more. That is, the space | interval I of the centers of the support part 13 is ensured largely, and the support part 13 is arrange | positioned over the wide range of the creeping direction D. FIG. Therefore, for example, as shown in FIG. 5, even when a ship berthing with respect to the quay wall surface Q inputs berthing energy from a direction inclined with respect to the front and back surfaces of the receiving plate 11, a plurality of Among the pair of support portions 13, any one pair of support portions 13 can be reliably compressed and deformed in the orthogonal direction D 3. As a result, the intermediate plate portion 12 can be clamped in the orthogonal direction D3 by the pair of compression-supported support portions 13, and displacement of the intermediate plate portion 12 in the creeping direction D can be restricted.

Further, the minimum distance X _min is equal to or smaller than the interval I between the centers of the support portions 13 adjacent to each other in the creeping direction D in the plan view of the impact receiving plate portion 11. That is, the shortest distance from the center of the support portion 13 to the outer peripheral edge 11a of the impact plate portion 11 in plan view of the impact plate portion 11 is shortened, and the support portion 13 is outside the impact plate portion 11. It is close to the peripheral edge 11a. Therefore, even if the berthing energy is input to the outer peripheral edge 11a of the impact receiving plate portion 11, the pair of support portions 13 disposed close to the input position are compressed and deformed to sandwich the intermediate plate portion 12. It becomes possible. Thereby, it is possible to regulate the displacement of the intermediate plate portion 12 in the creeping direction D.

As described above, by adjusting the arrangement positions of the plurality of pairs of support portions 13, for example, when the berthing energy is input from a direction inclined with respect to the front and back surfaces of the impact receiving plate portion 11, or when the berthing energy is received. Even if it is a case where it inputs into the outer periphery 11a of the impact plate part 11, it can control that the intermediate plate part 12 displaces in the creeping direction D. FIG. This makes it possible to absorb the berthing energy by reliably compressing and deforming the support portion 13 without providing the guide means in the prior art, thereby simplifying the fender 10.

Further, the interval I1 between the centers of the support portions 13 adjacent to each other in the vertical direction D1 is larger than the interval I2 between the centers of the support portions 13 adjacent to each other in the horizontal direction D2. That is, the space | interval I1 of the centers of the support parts 13 mutually adjacent | abutted in the perpendicular direction D1 is ensured large. Therefore, even if the berthing energy is input to the impact receiving plate portion 11 from a portion having a large inclination angle with respect to the vertical direction D1, such as the bow or stern of the ship, the displacement of the intermediate plate portion 12 in the vertical direction D1. Can be effectively suppressed.

Further, the support portion 13 is formed in a cylindrical shape that gradually decreases in diameter as it goes from the quay wall surface Q or the impact plate portion 11 toward the intermediate plate portion 12. Therefore, as shown in FIG. 5, when the support portion 13 is compressed and deformed, the base end portion 13 a and the tip end portion 13 b of the support portion 13 are buckled, and the base portion 13 a and the tip end portion 13 b of the support portion 13 are buckled. By bulging the intermediate portion 13c positioned therebetween in the radial direction, the base end portion 13a and the distal end portion 13b of the support portion 13 can be embedded inside the intermediate portion 13c. As a result, shear deformation in the creeping direction D of the support portion 13 can be restricted. Thereby, the displacement to the creeping direction D of the intermediate plate part 12 can be controlled effectively. If the elastic modulus of the rubber of the pair of support parts 13 is greatly different, the support part 13 having a small elastic modulus of the rubber of the pair of support parts 13 is greatly crushed (compressed and deformed). And the rubber | gum of the boundary of the front-end | tip part 13b and the intermediate part 13c may tear off.

Further, as shown in FIGS. 1 to 3, in the present embodiment, the intermediate plate portion 12 is a solid plate body. That is, the intermediate plate 12 is not a hollow frame (spacer) formed by combining frame materials. Therefore, the strength of the intermediate plate portion 12 can be ensured and the input of the berthing energy can be reliably received. Moreover, the excessive weight reduction of the intermediate plate part 12 can be suppressed, and the displacement of the intermediate plate part 12 in the creeping direction D can be easily controlled.

In the present embodiment, the same material can be adopted as the elastic material forming each of the pair of support portions 13, and the elastic moduli of the pair of support portions 13 can be made equal to each other. Here, the equivalent elastic modulus means that the difference in JIS A type hardness between the support portions 13 is less than 1 °, or the difference in elastic modulus between the support portions 13 is within ± 10%, preferably Means within ± 5%.
Thus, when the elastic moduli of the pair of support portions 13 are equal to each other, when the piercing energy is input to the fender 10, one of the support portions 13 is not preferentially compressed and deformed. Can be easily compressed and deformed equally. Thereby, berthing energy can be absorbed effectively.
Moreover, it can suppress that one bearing part 13 carries out an excessive compression deformation by compressing and deforming both the bearing parts 13 equally. As a result, the amount of compressive deformation of the support portion 13 can be suppressed to an appropriate range without providing a stopper that restricts excessive compressive deformation of the support portion 13. Thereby, simplification of the fender apparatus 10 can be achieved. Note that if the elastic modulus of the rubber of the pair of support portions 13 is greatly different, the support portion 13 having a low elastic modulus is compressed first. As a result, not only is a stopper required, but the berthing energy cannot be effectively absorbed. Therefore, there is a possibility that the amount of displacement in the creeping direction D of the impact receiving plate portion 11 and the intermediate plate portion 12 will increase.

By the way, in the fender 10, as shown in FIG. 6, the shortest along the vertical direction D 1 from the center of the support portion 13 to the outer peripheral edge 11 a of the impact plate portion 11 in a plan view of the impact plate portion 11. The distance is a distance Xv, and the shortest distance along the horizontal direction D2 is a distance Xh.

At this time, among the four pairs of support portions 13, the distance Xv for the two pairs of support portions 13 (hereinafter referred to as “upper support portions 13”) positioned on the upper side in the vertical direction D 1 is received. This is the distance from the center of the support portion 13 to the upper side in the vertical direction D1 to the outer peripheral edge 11a of the impact plate portion 11 in a plan view of the impact plate portion 11. That is, the distance Xv with respect to the upper support portion 13 is from the center of the support portion 13 to the lower side in the vertical direction D1 when reaching the outer peripheral edge 11a of the impact plate portion 11 in a plan view of the impact plate portion 11. Not the distance.

Further, among the four pairs of support portions 13, the distance Xv for the two pairs of support portions 13 (hereinafter referred to as “lower support portions 13”) positioned below the vertical direction D 1 is: This is the distance from the center of the support portion 13 to the lower edge of the vertical direction D1 to the outer peripheral edge 11a of the impact plate portion 11 in a plan view of the impact plate portion 11. That is, the distance Xv with respect to the lower support portion 13 is from the center of the support portion 13 toward the upper side in the vertical direction D1 to the outer peripheral edge 11a of the impact plate portion 11 in a plan view of the impact plate portion 11. Not the distance.
The distance Xv with respect to the upper support portion 13 is equal to or less than the distance Xv with respect to the lower support portion 13. In this embodiment, the distance Xv with respect to the upper support portion 13 and the distance with respect to the lower support portion 13. Xv is equivalent.

Further, in the plan view of the impact receiving plate portion 11, of the four pairs of support portions 13, two pairs of support portions 13 (hereinafter referred to as "left support portions 13") located on the left side in the horizontal direction D2. .)) Is a distance from the center of the support 13 toward the left side in the horizontal direction D2 to the outer peripheral edge 11a of the impact receiving plate 11 in a plan view of the impact receiving plate 11. That is, the distance Xh with respect to the left support portion 13 is the distance from the center of the support portion 13 to the right side in the horizontal direction D2 to the outer peripheral edge 11a of the impact plate portion 11 in plan view of the impact plate portion 11. Not distance.

In addition, in the plan view of the impact receiving plate portion 11, of the four pairs of support portions 13, two pairs of support portions 13 (hereinafter referred to as "right support portions 13") located on the right side in the horizontal direction D2. .) Is a distance from the center of the support portion 13 to the outer peripheral edge 11a of the impact plate portion 11 toward the right side in the horizontal direction D2 in plan view of the impact plate portion 11. That is, the distance Xh with respect to the right support portion 13 is the distance from the center of the support portion 13 to the outer peripheral edge 11a of the impact plate portion 11 toward the left side in the horizontal direction D2 in plan view of the impact plate portion 11. is not.
The distance Xh for the left support portion 13 and the distance Xh for the right support portion 13 are the same.

Here, in each of the plurality of support portions 13, at least one of the distance Xv and the distance Xh is the distance X. That is, at least one of the distance Xv and the distance Xh is the shortest distance from the center of the support portion 13 to the outer peripheral edge 11a of the impact plate portion 11 in a plan view of the impact plate portion 11. In the illustrated example, the distance Xv is the distance X in each support portion 13.

Of the distances Xv for each of the plurality of support portions 13, the minimum distance Xv is the minimum distance Xv _min, and among the distances Xh for each of the plurality of support portions 13, the minimum distance Xh is the minimum distance Xh _min . Sometimes, at least one of the minimum distance Xv _min and the minimum distance Xh _min is the minimum distance X _min . In the illustrated example, the minimum distance Xv _min is smaller than the minimum distance Xh _min and is the minimum distance X _min .

As described above, in the fender 10, the minimum distance Xv _min or the minimum distance Xh _min is the minimum distance X _min . Therefore, in the plan view of the impact receiving plate portion 11, the shortest distance in the vertical direction D1 or the horizontal direction D2 from the center of the support portion 13 to the outer peripheral edge 11a of the impact receiving plate portion 11 is shortened. That is, the support portion 13 is close to the outer peripheral edge 11a of the impact receiving plate portion 11 in the vertical direction D1 or the horizontal direction D2, and the support portion 13 is arranged over a wide range of the creeping direction D. Thereby, the berthing energy can be absorbed reliably.

The minimum distance Xv _min is smaller than the minimum distance Xh _min and is the minimum distance X _min . Accordingly, the shortest distance in the vertical direction D 1 from the center of the support portion 13 to the outer peripheral edge 11 a of the impact plate portion 11 is shortened in plan view of the impact plate portion 11. Thereby, even if it is a case where piercing energy is input into the receiving plate part 11 from the direction which inclines with respect to the perpendicular direction D1, any one pair of a pair of a pair of support parts 13 is comprised. The support portion 13 can be reliably compressed and deformed in the orthogonal direction D3.

Further, the distance Xv with respect to the upper support portion 13 is from the center of the support portion 13 to the upper side in the vertical direction D1 until reaching the outer peripheral edge 11a of the impact plate portion 11 in a plan view of the impact plate portion 11. Distance. In addition, the distance Xv with respect to the lower support portion 13 is the outer peripheral edge 11a of the impact plate portion 11 from the center of the support portion 13 toward the lower side in the vertical direction D1 in the plan view of the impact plate portion 11. It is the distance to reach. Therefore, the lower support portion 13 is brought close to the lower end edge (outer peripheral edge 11a) of the impact receiving plate portion 11 while the upper support portion 13 is brought closer to the upper end edge (outer peripheral edge 11a) of the impact receiving plate portion 11. Can do. Thus, when the berthing energy is input to the impact receiving plate portion 11 from the direction inclined with respect to the vertical direction D1, the upper support portion 13 or the lower support portion 13 or the lower support portion 11 is not required even if the intermediate plate portion 12 is not restrained by the mooring line 14. The side support portion 13 can be reliably compressed and deformed in the orthogonal direction D3.

Further, the distance Xv for the upper support portion 13 is equal to or less than the distance Xv for the lower support portion 13. Therefore, the upper support portion 13 can be reliably brought close to the upper end edge of the impact receiving plate portion 11. Thereby, when the berthing energy is input to the impact receiving plate portion 11 from the vicinity of the upper end edge of the impact receiving plate portion 11, the upper support portion 13 can be reliably compressed and deformed in the orthogonal direction D3.
Here, the general ship is formed in the shape which protrudes in the front-back direction or the left-right direction as it goes upwards from the ship bottom. Such a ship can easily input berthing energy to the impact plate portion 11 from the vicinity of the upper edge of the impact plate portion 11.
From the above, even when the berthing energy is input from the ship to the impact receiving plate part 11 because the distance Xv about the upper support part 13 is equal to or less than the distance Xv about the lower support part 13, It is possible to reliably compress and deform the upper support portion 13 reliably.

The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

For example, the support portion 13 can be formed of an elastic material other than rubber, and can be made of a synthetic resin, for example.
Further, the support portion 13 is not limited to the truncated cone type, and a hollow cylindrical type or the like can also be adopted.
Furthermore, although four pairs of support parts 13 are arrange | positioned, 2 sets, 3 sets, and 5 sets or more may be sufficient.

In addition, it is possible to appropriately replace the constituent elements in the embodiment with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

The verification test about the said effect was implemented.
In this verification test, the fenders of Examples 1 to 9 and Comparative Examples 1 and 2 were prepared. In the fender according to the first embodiment, the same configuration as that of the fender 10 shown in the above embodiment is adopted. Each of the fenders of Examples 2 to 9 and Comparative Examples 1 and 2 employs a configuration in which the fender device of Example 1 is partially different.

It should be noted that in on-site tests using full-scale fenders, due to external factors, such as being affected by the weather, it is difficult to make uniform contact with fenders on very heavy ships. A large impact. Therefore, in this verification test, a gradient compression test using a miniature model was performed. However, the same material as the real thing is used for the material of the impact plate part 11, the intermediate | middle board part 12, and the support part 13 in an Example and each comparative example. In each of the fenders of Examples and Comparative Examples, only the respective dimensions are different from the actual ones.

In each of the above fenders, the support portion 13 has a common configuration. The same rubber is used for the rubber of the support portion 13 of each fender. The outer diameter (maximum outer diameter) of the end edge of each support portion 13 on the base end portion 13a side is 150 mm. The outer diameter (minimum outer diameter) of the end edge of each support portion 13 on the distal end portion 13b side is 85 mm.
Each dimension etc. which produce a difference in each said fender is described in Table 1 and Table 2 mentioned later.
Below, each said fender is demonstrated centering on the main difference with Example 1. FIG.

In the fender according to the second embodiment, the shortest distance Xv _min is made smaller than that of the fender according to the first embodiment.
In the fender according to the third embodiment, the shortest distance Xh _min is made smaller than that of the fender according to the first embodiment.
In the fender device according to the fourth embodiment, the distance Xv at the upper support portion 13 is reduced and the distance Xv at the lower support portion 13 is increased as compared with the fender device according to the first embodiment.

In the fender device according to the fifth embodiment, the arrangement position of the support portion 13 is changed between the vertical direction D1 and the horizontal direction D2 with respect to the fender device according to the first embodiment.
In the fender according to the sixth embodiment, the shape of the receiving plate portion 11 in plan view is changed from a square to a rectangle with respect to the fender according to the first embodiment.

In the fender device according to the seventh embodiment, one set of the support portions 13 is added to the fender device according to the first embodiment. The added set of support portions 13 is arranged on the intersection of the diagonal lines of the rectangle R in the plan view of the impact plate portion 11.
The fender device of Example 8, the interval I1 between the centers in the vertical direction D1 in adjacent bearings 13, although equal to the shortest distance _{X min,} is less than the minimum distance _{Xv min.}
The fender device of Example 9, the interval I2 between the centers of the bearings 13 adjacent in the horizontal direction D2 is, although equal to the shortest distance _{X min,} is less than the minimum distance _{Xh min.}

In the fender according to Comparative Example 1, both the interval I1 and the interval I2 are smaller than the shortest distance _Xmin .
In the fender device of Comparative Example 2, a hollow frame was employed instead of the solid intermediate plate portion 12.

In this verification test, the maximum displacement of the impact receiving plate portion 11 before and after energy was input to the impact receiving plate portion 11 was measured for each of the fenders of Examples 1 to 9 and Comparative Examples 1 and 2.
The measuring method is as follows.
Usually, the locations with the largest displacement are the three upper portions of the impact plate portion 11 indicated by the symbol P in FIG. Therefore, in this verification test, the measurement position of the displacement amount was set at these three locations.
And energy was input perpendicularly (orthogonal direction D3) with respect to the receiving plate part 11 of each fender. The displacement amounts at the three locations at this time were determined by image analysis, and the numerical value (displacement amount) at the location with the largest displacement amount was extracted and indexed. The larger the amount of displacement of the impact receiving plate portion 11, the larger the index number.

The test results are shown in Tables 1 and 2 below. The dimensions are those of an actual miniature model.

From the above, it was confirmed that in Examples 1 to 9, the maximum displacement amount of the impact receiving plate portion 11 was suppressed more than in Comparative Examples 1 and 2.

In the verification test, a load was applied in parallel to the impact receiving plate portion 11. Here, separately, an auxiliary test was performed in which a load was applied to the receiving plate 11 at an angle. In this auxiliary test, a load was applied at an angle of 15 degrees with respect to the surface of the receiving plate 11. As a result, each fender was in the state shown in FIG. And in the fender apparatus of the comparative example 2, the intermediate | middle board part 12 was bent in the center vicinity. However, there was no particular problem with the other fenders.
Further, a test similar to the above-described verification test was performed by making the rubber materials of the pair of support portions 13 different from each other and changing the elastic moduli of the pair of support portions 13 from each other. In this case, the crushing of the rubber support portion 13 having a low elastic modulus was increased, and the rubber in the intermediate portion 13c was damaged.

Simplification of the fender can be achieved.

DESCRIPTION OF SYMBOLS 10 Barrier device 11 Receiving plate part 11a Outer peripheral edge 12 Intermediate plate part 13 Bearing part A Corner part D Creeping direction D1 Vertical direction D2 Horizontal direction I Space | interval Q Rectangle S1 First side part S2 Second side part X Distance Xv distance Xh distance X _min minimum distance Xv _min minimum distance Xh _min minimum distance

Claims

An impact plate facing the quay wall;
An intermediate plate portion disposed between the quay wall surface and the receiving plate portion;
A fender device comprising a pair of support portions that connect the intermediate plate portion and the quay wall surface and the receiving plate portion separately and are directly connected to each other via the intermediate plate portion,
The pair of support parts are arranged in a plurality in a creeping direction along the front and back surfaces of the impact plate part,
In a plan view of the impact plate portion, the shortest distance from the center of the support portion to the outer periphery of the impact plate portion is defined as a distance X, and the minimum of the distances X for each of the multiple support portions When the distance X is the minimum distance Xmin ,
Wherein in a plan view of the impact receiving plate portion, the distance between the centers of the bearing portion adjacent to each other in said creeping direction, fender device wherein is the minimum distance X min or more.
The pair of support portions are arranged in four sets so as to form rectangular corners in a plan view of the receiving plate portion,
The rectangle has a pair of first sides extending in the vertical direction as the creeping direction, and a pair of second sides extending in the horizontal direction as the creeping direction,
The fender device according to claim 1, wherein an interval between centers of the support portions adjacent to each other in the vertical direction is larger than an interval between centers of the support portions adjacent to each other in the horizontal direction.
3. The fender according to claim 1 or 2, wherein the support portion is formed in a cylindrical shape that gradually decreases in diameter from the quay wall surface or the receiving plate portion toward the intermediate plate portion.
The front and back surfaces of the impact plate portion extend along both the vertical direction and the horizontal direction as the creeping direction,
In a plan view of the impact plate portion, the shortest distance along the vertical direction from the center of the support portion to the outer periphery of the impact plate portion is defined as a distance Xv, and the shortest distance along the horizontal direction is defined as a distance Xh. sometimes,
In each of the plurality of support portions, at least one of the distance Xv and the distance Xh is the distance X,
Among the distance Xv for a plurality of the bearing portions, respectively, the minimum of the distance Xv the minimum distance Xv min, among the distance Xh for a plurality of the bearing portions, respectively, the minimum and the minimum of the distance Xh distance Xh min And when
4. The fender according to claim 1, wherein at least one of the minimum distance Xv min and the minimum distance Xh min is the minimum distance X min .
The fender according to claim 4, wherein the minimum distance Xv min is smaller than the minimum distance Xh min and is the minimum distance X min .
The pair of support portions are arranged in four sets so as to form rectangular corners in a plan view of the receiving plate portion,
The rectangle has a pair of first sides extending in the vertical direction as the creeping direction, and a pair of second sides extending in the horizontal direction as the creeping direction,
Among the four pairs of support portions, the distance Xv for the two pairs of support portions positioned on the upper side in the vertical direction is a vertical direction from the center of the support portion in the plan view of the impact plate portion. It is the distance to the outer periphery of the receiving plate part toward the upper side,
Among the four pairs of support portions, the distance Xv for the two pairs of support portions positioned on the lower side in the vertical direction is perpendicular to the center of the support portion in plan view of the impact plate portion. The fender according to claim 4 or 5, wherein the fender device is a distance to the outer peripheral edge of the receiving plate portion toward the lower side in the direction.
Among the four pairs of support portions, the distance Xv for the two pairs of support portions positioned on the upper side in the vertical direction is the distance Xv for the two sets of pair of support portions positioned on the lower side in the vertical direction. The fender according to claim 6, which is equal to or less than the distance Xv.