Mooring shock absorber

Abstract

To provide a mooring buffer device which can be made compact without requiring large space, absorb impact in the direction where load is applied and be easily maintained.SOLUTION: A mooring buffer device 1, which is a shock absorber 1 that absorbs and protects the load applied between a fixed support pile (first structure) B and a relatively moving floating pier (second structure) A, includes a solid elastic cushioning member 10 provided on the front surface of one (floating pier A) of the support pile B and the floating pier A, a load receiving member 20 provided on the front surface of the elastic cushioning member 10 for receiving the load of the support frame and the floating pier A and transmitting the load to the elastic cushioning member 10 as surface pressure and a contact plate member 30 that is provided on the front surface of the load receiving member 20 and makes surface contact with the supporting pile and the floating bridge A by reducing friction regardless of the direction of the load.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mooring shock absorber. [Background technology]

[0002] In order to absorb the load acting between a fixed structure and a structure that moves relative to it and protect the structure, mooring buffer devices such as buffer materials installed between the floating pier and the support piles and fenders installed on the quay are used.

[0003] For example, the buffer material disclosed in Patent Document 1 is configured by rotatably and pivotally attaching multiple rollers to the front of an elastic support body attached to a quay wall. Also, as shown in Figure 5(b), a mooring buffer device 100 is also used on floating pier A by attaching multiple single rollers 102 rotatably around a horizontal axis to the front of buffer material 101, and installing three rollers 102 on each of two orthogonal faces of support pile B.

[0004] As structures such as floating pier A become larger, larger loads are applied, so the mooring buffer device 100 is required to have the performance to withstand large loads, and it becomes necessary to make one elastic support or buffer material 101 larger to accommodate the total load, or to install multiple mooring buffer devices 100. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 61-6516 Summary of the Invention [Problem to be solved by the invention]

[0006] However, if a single roller is used and the elastic support and buffer material are enlarged, or if multiple rollers 102 are provided as in the illustrated example, problems such as a large installation space arise. Furthermore, if multiple rollers 102 are installed separately, there is a risk of the load concentrating on one roller 102, resulting in a one-sided load condition depending on the relative movement. Furthermore, with cylindrical rollers 102, contact on the surface of the roller 102 is line contact, resulting in high pressure. Furthermore, because the rollers 102 are rotatable about a horizontal axis, relative movement in the vertical direction is smooth due to rolling friction, but relative movement in the intersecting direction is due to sliding friction, resulting in high frictional resistance. Furthermore, replacing the roller 102 poses maintenance problems, as the roller section, including the bearings, has a complex structure that makes it difficult to replace.

[0007] The present invention has been made in consideration of such conventional technology, and aims to provide a mooring shock absorber that is compact and does not require a large space, can absorb loads regardless of the direction of the load, and is easy to maintain. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention The first perspective The mooring shock absorber according to the present invention is A mooring buffer device that absorbs and protects a load applied between a fixed first structure and a relatively moving second structure, a solid elastic buffer member provided on a front surface of either the first structure or the second structure; a load-receiving member provided on a front surface of the elastic buffer member, receiving the load of the first structure and the second structure and transmitting the load as a surface pressure to the elastic buffer member; The load receiving member is provided on the front surface thereof. 、 The first structure and the second structure On either surface and a contact plate member that makes surface contact. picture, the contact plate member is made of a material that can slide on the surface when subjected to the load, the contact plate member is provided on a slide member that is detachable from the load receiving member, The slide member is configured to be replaceable by being detached from the load receiving member along with the contact plate member. , characterized by:

[0010] In order to achieve the above object, a mooring shock absorber according to a second aspect of the present invention comprises: A mooring buffer device that absorbs and protects a load applied between a fixed first structure and a relatively moving second structure, a solid elastic buffer member provided on a front surface of either the first structure or the second structure; a load-receiving member provided on a front surface of the elastic buffer member, receiving the load of the first structure and the second structure and transmitting the load as a surface pressure to the elastic buffer member; a contact plate member provided on a front surface of the load-receiving member and in surface contact with a surface of the other of the first structure and the second structure; the contact plate member is made of a material that can slide on the surface when subjected to the load, the contact plate member has a stepped pressing portion formed on its peripheral edge, and the pressing portion is pressed by a frame member having a side portion attached to the load receiving member; The frame member is configured such that the side portions on both sides are rotatably supported below or to the side of the load receiving member, and the contact plate member can be attached, detached, and replaced along the load receiving member through a rotated opening. Characterized by .

[0011] It is preferable that the frame member be configured so that the side portions on both sides of the opening can be bent by a plurality of links.

[0012] It is preferable that the frame member is configured to include at least the side portion that presses against the bottom portion of the load-receiving member.

[0013] In order to achieve the above object, a mooring shock absorber according to a third aspect of the present invention comprises: A mooring buffer device that absorbs and protects a load applied between a fixed first structure and a relatively moving second structure, a solid elastic buffer member provided on a front surface of either the first structure or the second structure; a load-receiving member provided on a front surface of the elastic buffer member, receiving the load of the first structure and the second structure and transmitting the load as a surface pressure to the elastic buffer member; a contact plate member provided on a front surface of the load-receiving member and in surface contact with a surface of the other of the first structure and the second structure; the contact plate member is made of a material that can slide on the surface when subjected to the load, The contact plate member is formed in a concave shape corresponding to the width or height of the load receiving member, and is configured to be detachable and replaceable by covering the concave portion along the load receiving member. Characterized by .

[0014] It is preferable that the frame member guides the pressing portion of the contact plate member when detached or replaced.

[0015] In order to achieve the above object, a mooring shock absorber according to a fourth aspect of the present invention comprises: A mooring buffer device that absorbs and protects a load applied between a fixed first structure and a relatively moving second structure, a solid elastic buffer member provided on a front surface of either the first structure or the second structure; a load-receiving member provided on a front surface of the elastic buffer member, receiving the load of the first structure and the second structure and transmitting the load as a surface pressure to the elastic buffer member; a contact plate member provided on a front surface of the load-receiving member and in surface contact with a surface of the other of the first structure and the second structure; the contact plate member is made of a material that can slide on the surface when subjected to the load, The contact plate member has recessed fixing grooves on both sides in the attachment / detachment / replacement direction, A fixing member to be attached to the load receiving member is inserted into the fixing groove and is configured to be fixable and releasable. Characterized by .

[0016] The elastic buffer member preferably has reinforcing plates on the front and rear surfaces.

[0017] The contact plate member is preferably made of a low-friction material with a friction coefficient of 0.1 to 0.2.

[0018] The load-receiving member is preferably made of any one of metal, synthetic resin, and hard rubber.

[0019] It is preferable that either the first structure or the second structure is formed of any one of a floating pier, a berthing facility, a bridge pier, and a water gate. [Effects of the Invention]

[0020] According to the present invention, a compact design is possible without requiring a large space, the load can be buffered regardless of the direction of the applied load, and maintenance is easy. [Brief explanation of the drawings]

[0021] [Figure 1] 1A, 1B, and 1C show a plan view, a front view, and a side view, respectively, of an embodiment of a mooring shock absorber according to the present invention. [Figure 2] 1A, 1B, and 1C are a plan view, a front view, and a side view, respectively, of an elastic cushioning member according to an embodiment of the present invention. [Figure 3] 1A is a plan view, FIG. 1B is a front view, and FIG. 1C is a side view of a load-receiving member according to an embodiment of the present invention. [Figure 4] 1A and 1B are a front view and a side view of the upper half of a contact plate member according to an embodiment of the present invention, respectively; [Figure 5] 1A is a plan view showing the relationship between a floating pier and support piles according to one embodiment of the present invention, and FIG. 1B is a plan view showing a conventional device. [Figure 6] 10A, 10B, and 10C show another embodiment of the present invention, in which (a) is a plan view, (b) is a front view, and (c) is a side view. [Figure 7] 10A, 10B, and 10C are a plan view, a front view, and a side view, respectively, of a load-receiving member according to another embodiment of the present invention. [Figure 8] FIG. 10 is a front view of a slide member according to another embodiment of the present invention. [Figure 9] FIG. 10 is a side view of a sliding state of a sliding member according to another embodiment of the present invention. [Figure 10] 1 is a schematic perspective view of an embodiment of the present invention; [Figure 11] 1A is a plan view, FIG. 1B is a front view, and FIG. 1C is a side view of a load-receiving member according to an embodiment of the present invention. [Figure 12] 1A, 1B, and 1C are a plan view, a front view, and a side view, respectively, of a contact plate member according to an embodiment of the present invention. [Figure 13] 1A, 1B, and 1C are a plan view, a front view, and a side view, respectively, of a frame member according to an embodiment of the present invention. [Figure 14] 1 is a schematic perspective view of an embodiment of the present invention; [Figure 15] 10A, 10B, and 10C are plan, front, and side views, respectively, of a frame member according to another embodiment of the present invention. [Figure 16] 10A and 10B show another embodiment of the present invention, in which (a) is a side view showing a state before replacement, and (b) is a side view showing a state during replacement. [Figure 17] 1 is a schematic perspective view of an embodiment of the present invention; [Figure 18]1A is a plan view, FIG. 1B is a front view, and FIG. 1C is a side view of a load-receiving member according to an embodiment of the present invention. [Figure 19] 1A, 1B, and 1C are a plan view, a front view, and a side view, respectively, of a frame member according to an embodiment of the present invention. [Figure 20] 1A is a side view showing a state before replacement, and FIG. 1B is a side view showing a state during replacement, according to one embodiment of the present invention. [Figure 21] FIG. 10 is a schematic perspective view of another embodiment of the present invention. [Figure 22] 10A and 10B show another embodiment of the present invention, in which (a) is a side view showing a state before replacement, and (b) is a side view showing a state during replacement. [Figure 23] 1 is a schematic perspective view of an embodiment of the present invention; [Figure 24] 1A, 1B, and 1C are a plan view, a front view, and a side view, respectively, of a contact plate member according to an embodiment of the present invention. [Figure 25] 1A is a side view showing a state before replacement, and FIG. 1B is a side view showing a state during replacement, according to one embodiment of the present invention. [Figure 26] FIG. 10 is a schematic perspective view illustrating a replacement operation according to another embodiment of the present invention. [Figure 27] 10A, 10B, and 10C are a plan view, a front view, and a side view, respectively, of a contact plate member according to another embodiment of the present invention. [Figure 28] This shows the work process of another embodiment of the present invention, where (a) is a front view before replacement, (b) is a side view before replacement, (c) is a front view of the contact plate member during replacement, (d) is a side view of the contact plate member during replacement, (e) is a front view before fixing after replacement, and (f) is a side view before fixing after replacement. DETAILED DESCRIPTION OF THE INVENTION

[0022] An embodiment of the present invention will be described in detail below with reference to FIGS.

[0023] A mooring buffer device (hereinafter simply referred to as a buffer device) is configured, for example, to be installed between a floating pier and a support pile, and absorbs and protects the load applied between the fixed support pile (first structure) and the floating pier (second structure) which moves relative to it. As shown in Figure 1, the shock absorber 1 comprises a solid elastic shock absorber 10 provided on the front surface of either the support pile B or the floating pier A, for example, on the front surface of the floating pier A, a load-receiving member 20 provided on the front surface of the elastic shock absorber 10, which receives the load from the support pile B and the floating pier A and transmits it to the elastic shock absorber 10 as a surface pressure, and a contact plate member 30 provided on the front surface of the load-receiving member 20, which makes surface contact with the support pile B and the floating pier A, reducing friction regardless of the direction of the load from the support pile B and the floating pier A.

[0024] As shown in Figures 1 and 2, the elastic buffer member 10 of the shock absorber 1 is configured as a solid rubber body that is installed, for example, on the front surface of the floating pier A. The elastic buffer member 10 is integrally molded from rubber and includes two rectangular plate-shaped flanges, a front flange portion 11 and a rear flange portion 12, at the front and rear, and a solid rubber buffer portion 13 that has a rectangular (quadratic pillar) cross section that is smaller than the front and rear flange portions 11, 12. The two front and rear flange portions 11, 12 are molded with metal (e.g., SS400) reinforcing plates (not shown) inside, and are reinforced by being covered with rubber. A bolt hole 12a is formed through the rear flange portion 12 attached to the front of the floating pier A, and a bolt hole 12a is formed through the front flange portion 11 on the front side connected to the rear surface of the load-receiving member 20, with the bolt holes 11a, 12a being formed offset in the vertical direction from the same straight line. The solid rubber buffer 13 is a solid body with no hollow space and an increased amount of rubber so that it can improve the buffering effect even against a large load (for example, 1000 kN). The rubber buffer 13 is made of rubber with a high spring constant, for example, a spring constant of 1.3 N / mm 2 Those of this order are preferably used.

[0025] 1 and 3, the load-receiving member 20 of the shock absorber 1 is provided on the front surface of the elastic shock absorber 10. The load-receiving member 20 receives the load from the support pile B and the floating pier A, and transmits the load to the elastic shock absorber 10 as surface pressure by dispersing the load without line contact as in the case of rollers or with one-sided contact due to some rollers. The load-receiving member 20 has a front flange portion 21 and a rear flange portion 22 on its front and rear surfaces, and an intermediate base portion 23 arranged in a lattice pattern is provided between the front and rear flange portions 21, 22. The load-receiving member 20 is sometimes immersed in seawater and is made of a corrosion-resistant metal (for example, stainless steel (SUS304)).

[0026] Rear flange portion 22 has the same shape as front flange portion 11 on the front surface of elastic buffer member 10, and is formed with bolt holes 22a that are positioned in the same way as bolt holes 11a on the front surface of elastic buffer member 10. Nuts 22b are welded in advance to the front surface of rear flange portion 22 in correspondence with bolt holes 22a. This makes it possible to easily connect and fix elastic buffer member 10 and load-receiving member 20 using only bolts 24. The front flange portion 21 is the same size as the rear flange portion 22, and is formed with screw holes 21a for attaching the contact plate member 30 so that the contact plate member 30 can be fixed from the front side with bolts 34 (see Figure 1).

[0027] The intermediate base 23 is framed so that it can transmit a large load applied to the front flange 21 to the rear flange 22 without deforming. The intermediate base 23 is framed in a generally lattice shape by three vertical members 23a, two horizontal members 23b arranged vertically and left-right between the two middle vertical members 23a and connecting them, and two end horizontal members 23c arranged left and right at the outer ends of the outer vertical members 23a. In the intermediate base 23, the end horizontal members 23c are positioned so as not to interfere with the tightening of three bolts 24 inserted through the bolt holes 11a in the front flange 11 and the bolt holes 22a in the rear flange 22 of the load-receiving member 20 when connecting and fixing the elastic buffer member 10 to the load-receiving member 20.

[0028] Furthermore, the intermediate base portion 23 only needs to have a structure that is rigid enough to transmit the load to the elastic buffer member 10 via the rear flange portion 22 without deforming even when a large load is applied to the front flange portion 21, and the number of vertical members 23a, horizontal members 23b, and end horizontal members 23c can be increased or decreased to form a lattice-like framework, etc., and the structure can be determined to correspond to the expected load. Furthermore, the load-receiving member 20 is not limited to stainless steel, and may be constructed of other metal materials, synthetic resin materials, hard rubber, or the like, so as to have a structure capable of withstanding the load.

[0029] The contact plate member 30 of the shock absorber 1 is provided on the front surface of the load-receiving member 20. The contact plate member 30 reduces friction and comes into surface contact with the floating pier A and the support pile B regardless of the direction of the load, receiving the load as surface pressure and transmitting it to the load-receiving member 20. As shown in Figures 1 and 4, the contact plate member 30 is made of a material (low-friction material) that has a small friction coefficient μ (static friction coefficient), little wear, and is strong enough to withstand applied loads, and is made of, for example, synthetic resin, metal, ceramics, etc. The contact plate member 30 is preferably made of a low-friction material with a friction coefficient μ of approximately μ=0.1 to 0.2, for example, which reduces the directionality of the sliding direction, reduces the shear load, and also reduces the tipping moment of the elastic buffer member 10.

[0030] The contact plate member 30 is formed to cover the front surface in accordance with the size of the front flange portion 21 of the load-receiving member 20. As shown in Figure 4, the contact plate member 30 is composed of, for example, two resin plates 31 and 32 divided into upper and lower parts. Each of the resin plates 31 and 32 is formed with a bolt hole 33 equipped with a counterbore, and by forming the counterbore larger than the bolt head, the head of the mounting bolt 34 is prevented from protruding from the surface, thereby maintaining a flat surface. The contact plate member 30 has a thickness of, for example, about 50 mm, which is significantly smaller than conventional rollers, for example, those with a diameter of about 370 mm (see Figures 5(a) and (b)).

[0031] In the shock absorber 1 configured in this manner, the rear flange portion 22 of the load-receiving member 20 is placed against the front flange portion 11 of the elastic shock absorber 10, and a bolt 24 is inserted from the bolt hole 11a side into the bolt hole 22a and tightened to the welded nut 22b, thereby connecting and fixing the elastic shock absorber 10 and the load-receiving member 20. Thereafter, the contact plate member 30 is placed against the front surface of the front flange portion 21 of the load-receiving member 20, and a bolt 34 is inserted into the bolt hole 33 with a counterbore, and the contact plate member 30 is tightened into the screw hole 21a of the front flange portion 21, thereby connecting and fixing the contact plate member 30 to the load-receiving member 20. The shock absorber 1 thus assembled is placed such that the rear flange portion 12 of the elastic shock absorber member 10 is placed against the floating pier A, and the bolt holes 12a of the floating pier A are fastened with bolts and nuts 14. Then, the contact plate member 30 is placed against the surface of the support pile B, thereby completing the installation.

[0032] In this type of shock absorber 1, the elastic shock absorber member 10 is composed of a single member, the spring constant of the rubber used is increased, and the hollow portion is eliminated to increase the amount of rubber. This allows a single shock absorber to handle larger loads than conventional shock absorbers that use a roller 102 and hollow shock absorber material, and can absorb large loads, for example, up to 1000 kN (see Figures 5(a) and (b)).

[0033] Furthermore, in the shock absorber 1, the contact plate member 30 that comes into contact with structures such as the support pile B is configured using a contact plate member 30 that has a larger contact area and a smaller friction coefficient μ than conventional rollers 102. This allows the line contact that was previously the case with rollers 102 that come into contact with the support pile B to be changed to surface contact with the contact plate member 30, and the increased contact area at the time of contact makes it possible to distribute the load. This makes the contact plate member 30 less susceptible to wear, thereby reducing wear. Furthermore, by using the contact plate member 30, the structure can be simplified compared to when using the rotatable roller 102, and replacement can be easily and quickly performed, thereby reducing maintenance costs. Furthermore, as shown in Figures 5(a) and 5(b), the dimension H in the front-to-rear direction compared to the roller 102 can be reduced from the previous H to, for example, about H / 1.8, and the installation space D can be reduced to about D / 2, allowing for compact installation.

[0034] Furthermore, in the conventional shock absorber 100 using rollers 102, although the rollers 102 rotate only in the vertical direction, which reduces rolling friction in this direction, sliding friction occurs in the horizontal direction, causing a large shear load, which results in a directional load acting on the shock absorber 101 via the rollers 102, and is particularly prone to problems such as a large overturning moment occurring in the shock absorber 101 due to the shear load. In contrast, in the shock absorber 1, contact with the structure (support pile B) is made via the contact plate member 30, which allows for a small sliding contact with a non-directional friction coefficient μ of approximately 0.1 to 0.2 against the load, reducing the overturning moment generated in the elastic shock absorber member 10 and enabling stable absorption and cushioning of even large loads.

[0035] Next, another embodiment of the present invention will be described in detail with reference to Figures 6 to 9. Note that the same components as those in the embodiment already described above are given the same reference numerals.

[0036] As shown in Figure 6, the shock absorber 1A comprises a solid elastic shock absorber 10 provided on the front surface of either the support pile B or the floating pier A, for example, on the front surface of the floating pier A; a load-receiving member 20A provided on the front surface of the elastic shock absorber 10, which receives the load between the support pile B and the floating pier A and transmits it as surface pressure to the elastic shock absorber 10; a slide member 40 provided on the front surface of the load-receiving member 20A and which can be attached and detached in the vertical direction relative to the load-receiving member 20A; and a contact plate member 30 provided on the front surface of the slide member 40, which makes surface contact between the support pile B and the floating pier A and reduces friction regardless of the direction of the load. That is, in the shock absorber 1A, the contact plate member 30 is attached to the load receiving member 20A via the slide member 40, so that the contact plate member 30 together with the slide member 40 can be detached from the load receiving member 20A and replaced. In the shock absorber 1A, the elastic shock absorber member 10 and the contact plate member 30 already described are used as they are, and therefore a duplicated description will be omitted.

[0037] As shown in Figures 6 and 7, the load-receiving member 20A of the shock absorber 1A is provided on the front surface of the elastic shock absorber 10. The load-receiving member 20A receives the load between the support pile B and the floating pier A, and distributes the load as surface pressure and transmits it to the elastic shock absorber 10 without line contact as occurs with rollers or one-sided contact due to some of the rollers. The load-receiving member 20A has a front flange portion 21A and a rear flange portion 22 on its front and rear surfaces, and an intermediate base portion 23A arranged in a generally lattice pattern is provided between the front and rear flange portions 21A, 22. The load-receiving member 20A may be immersed in seawater, and is therefore made of a corrosion-resistant metal (for example, stainless steel (SUS304)). Like the load-receiving member 20 already described, the load-receiving member 20A can be made of not only stainless steel but also other metal materials, synthetic resin materials, hard rubber, etc., so as to have a structure capable of withstanding the load.

[0038] Rear flange portion 22 has the same shape as front flange portion 11 on the front surface of elastic buffer member 10, and is formed with bolt holes 22a that are disposed in the same positions as bolt holes 11a on the front surface of elastic buffer member 10. Nuts 22b are welded in advance to the front surface of rear flange portion 22 in correspondence with bolt holes 22a. This makes it possible to easily connect and fix elastic buffer member 10 and load-receiving member 20A simply by tightening bolts 24 to nuts 22b. Front flange portion 21A is formed so that both left and right sides protrude laterally from rear flange portion 22. Bolt holes 21b for connecting and fixing to slide member 40 are formed along both sides of front flange portion 21A protruding outward.

[0039] The intermediate base 23A is framed so that it can transmit a large load applied to the front flange 21A to the rear flange 22 without deforming. The intermediate base 23A is framed in a generally lattice pattern by three vertical members 23a, two horizontal members 23b arranged vertically and left and right between the two middle vertical members 23a and connecting them, and two end horizontal members 23Ac arranged left and right at the outer ends of the outer vertical members 23a. The end horizontal members 23Ac are attached with their outer edges inclined from the end of the rear flange 22 toward the wide end of the front flange 21A.

[0040] The slide member 40 is made of a metal plate material such as stainless steel, and its width is formed to match the width of the front flange portion 21A of the load-receiving member 20A. As shown in Figure 6(c), the upper side protrudes upward from the front flange portion 21A, and the lower side is sized to match the lower end of the front flange portion 21A. The portion of slide member 40 that protrudes upward is formed with a long hole 41 that is used for attaching and detaching slide member 40 so that it can be hoisted while sliding. Also, bolt holes 42 for connecting and fixing to load-receiving member 20A are formed in slide member 40 on both sides of front flange portion 21A, aligned with bolt holes 21b. Furthermore, screw holes 43 for attaching contact plate member 30 with a low coefficient of friction μ (for example, μ is approximately 0.1 to 0.2) are formed in alignment with bolt holes 33 with counterbores in contact plate member 30 (see FIG. 6, etc.).

[0041] The contact plate member 30, as already described, is composed of, for example, two divided resin plates 31 and 32, one above the other. The resin plates 31 and 32 are connected and fixed on a flat surface by bolt holes 33 with counterbores, preventing the heads of mounting bolts 34 from protruding from the surface. The low-friction material used for the contact plate member 30 can be synthetic resin, metal, ceramics, etc.

[0042] In the shock absorber 1A configured in this manner, the rear flange portion 22 of the load-receiving member 20A is placed against the front flange portion 11 of the elastic shock absorber 10, and a bolt 24 is inserted from the bolt hole 11a side into the bolt hole 22a and tightened to the welded nut 22b, thereby connecting and fixing the elastic shock absorber 10 and the load-receiving member 20. After this, the slide member 40 is placed against the front surface of the front flange portion 21A of the load-receiving member 20A, and the connection and fixation are achieved by tightening the bolts, nuts, and washers 44 through the bolt holes 21b for connection and fixation provided along both sides of the outwardly protruding front flange portion 21A and the bolt holes 42 of the slide member 40. Either after this, or before connecting the slide member 40 to the load-receiving member 20A, the contact plate member 30 is attached to the slide member 40. To attach the contact plate member 30 to the slide member 40, the contact plate member 30 is placed against the front surface of the slide member 40, bolts 34 are inserted into bolt holes 33 with counterbores, and the contact plate member 30 is fastened to the screw holes 43 of the slide member 40 to connect and fix the contact plate member 30. The shock absorber 1A thus assembled is placed by placing the rear flange portion 12 of the elastic shock absorber member 10 against the floating pier A and fastening it with bolts and nuts 14 through the bolt holes 12a of the floating pier A. Then, the contact plate member 30 is placed against the surface of the support pile B, thereby completing the installation.

[0043] This type of shock absorber 1A has the same effects as the shock absorber 1 already described. That is, by increasing the spring constant of the rubber used in the elastic shock absorber 10 and eliminating the hollow portion to increase the amount of rubber, a single unit can absorb a larger load than conventional shock absorbers that use rollers and hollow shock absorbers, and can absorb a large load of, for example, 1000 kN.

[0044] Furthermore, in the shock absorber 1A, the contact plate member 30 has a larger contact area and a smaller friction coefficient μ (for example, μ is about 0.1 to 0.2) than conventional rollers, which allows the contact plate member 30 to be in surface contact, and the increased contact area at the time of contact allows the load to be distributed, making the contact plate member 30 less susceptible to wear and reducing wear.

[0045] Furthermore, in the shock absorber 1A, contact with the structure (support pile B) is made via the contact plate member 30, resulting in sliding contact with no directionality to the load and a small friction coefficient μ, which reduces the tipping moment generated in the elastic shock absorber member 10 and enables stable absorption and cushioning of even large loads. Furthermore, in the shock absorber 1A, by using the contact plate member 30, the structure can be simplified compared to when a rotatable roller is used, and as in the case of the shock absorber 1, the dimension H in the front-to-rear direction can be reduced compared to the roller, for example from H to about H / 1.8, and the installation space D can be reduced from D to about D / 2, allowing for compact installation (see Figures 5(a) and (b)).

[0046] In addition to these effects, in the shock absorber 1A, when the contact plate member 30 needs to be replaced if it is damaged or worn, the long holes 41 of the slide member 40 are used to support the load, and then the bolts, nuts, and washers 44 connecting and fixing the slide member 40 to the load-receiving member 20A can be removed, and the slide member 40 can be slid along the load-receiving member 20A and pulled up, thereby separating the contact plate member 30 from the load-receiving member 20A together with the slide member 40. This eliminates the need to lift the entire shock absorber 1A onto land for replacement, improving the workability of the replacement work, enabling safe replacement and reducing maintenance costs.

[0047] Next, still another embodiment of the present invention will be described in detail with reference to Figures 10 to 28. Note that the same components as those in the above-described embodiment are given the same reference numerals. The following embodiment makes it easier to maintain the shock absorber even when it is installed, and makes it possible to easily replace the contact plate member 30 when it becomes worn, without requiring a large space.

[0048] 12, in the shock absorber 2, a stepped pressing portion 35 is formed on the periphery of the contact plate member 30, and the portion that comes into contact with the support pile B is formed thicker (see FIGS. 1 and 5). The pressing portion 35 is pressed and fixed by a frame member 50 that is attached to the load-receiving member 20.

[0049] 13, the frame member 50 is formed into a rectangular frame shape with four sides 51 to 54. The frame member 50 has sides 51 and 52 on both sides that protrude to cover the load-receiving member 20, and the four protruding parts at the top and bottom are fixed to fixing nuts 56 attached to the side surfaces of the load-receiving member 20 with fixing bolts 55 and 55a. As shown in FIG. 11, both sides of the load-receiving member 20 are closed by side plates 25, and through holes for fixing bolts 55, 55a are formed in the side plates 25 at four locations, with fixing nuts 56 welded to the inside. As a result, as shown in Figure 10, by removing the upper fixing bolt 55a and loosening the lower fixing bolt 55, the frame member 50 is rotatably supported on the load-receiving member 20 as a hinge structure around a horizontal axis by the lower fixing bolt 55.

[0050] In the shock absorber 2, an opening C can be formed at the top by rotating the frame member 50 around the lower fixing bolt 55 of the hinge structure, and the contact plate member 30 can be hung in the vertical direction along the load-receiving member 20 through the opening C, or lifted up and attached, removed, or replaced. After replacing the contact plate member 30, the frame member 50 is rotated to close the opening C, the upper sides of the sides 51 and 52 of the frame member 50 are fixed with the fixing bolts 55a and the fixing nuts 56, and the lower fixing bolts 55 are tightened to complete the replacement. The elastic buffer member 10 used is the same as that already explained. Furthermore, the frame member 50 can be hinged around a vertical axis relative to the load receiving member 20, and the contact plate member can be opened at the side to be detached and replaced from the side.

[0051] 14 to 16, shock absorber 2A is configured such that side portions 51 and 52 of frame member 50A can be bent using multiple links. Side portion 51 is made up of two split links 51a and 51b, each roughly half the length, and a short connecting link 51c between them, connected by a pin, and has approximately the same length as original side portion 51. Similarly, side portion 52 is made up of split links 52a and 52b and a short connecting link 52c between them, connected by a pin, and has approximately the same length as original side portion 52. 16, the frame member 50A made up of multiple links can form an opening C by removing the fixing bolts 55a of the upper split links 51a, 52a and rotating only the upper split links 51a, 52a around the pins of the intermediate connecting links 51c, 52c. At the same time, the fixing bolts 55 of the lower split links 51b, 52b can be loosened to allow the contact plate member 30 to be attached or detached along the load-receiving member 20.

[0052] In this shock absorber 2A, the amount of protrusion caused by rotation of frame member 50A can be kept small according to the length of upper split links 51a, 52a, allowing replacement of contact plate member 30 in a small space. Also, by using the grooves of frame member 50A of lower split links 51b, 52b and pressing portion 35 of contact plate member 30 as guides, attachment and detachment can be performed smoothly, improving work efficiency.

[0053] 17 to 20, in shock absorber 2B, frame member 50B is separated at lower side 53, and the other side portions 51 and 52 and upper side portion 54 form a U-shape. The other configuration is the same as that of shock absorber 2 (see FIG. 19). 18, the lower side 53 is provided in advance along the lower edge of the load-receiving member 20 and fixed by welding or the like. The U-shaped frame portion of the frame member 50B has both side portions 51 and 52 which are fastened to the load-receiving member 20 with fixing bolts 55 and 55a, similar to the shock absorber 2A, to fix the contact plate member 30.

[0054] When replacing the contact plate member 30, as shown in Figure 20, the U-shaped frame portion of the frame member 50B is removed and the contact plate member 30 is then lifted up. After this, the new contact plate member 30 is hung down and the load is supported by the lower side portion 53. In this state, the U-shaped frame portion of the frame member 50B is attached so as to cover the contact plate member 30 from above, using the retaining portion 35 of the contact plate member 30 and the frame portion as a guide, and fixed in place with four fixing bolts 55, 55a.

[0055] According to the shock absorber 2B, the lower side 53 of the frame member 50B can support the load of the contact plate member 30, and the contact plate member 30 can be replaced in a small space. The side 53 can also be used to position the contact plate member 30, allowing for efficient replacement work. The side portion 53 of the frame member 50B may be provided integrally as a part of the load receiving member 20.

[0056] 21 and 22, in the shock absorber 2C, a frame member 50C is configured such that an upper side 54 is separated and the other two side portions 51 and 52 and a lower side portion 53 are divided into a U-shape. The other configuration is the same as that of the shock absorber 2. The U-shaped frame portion formed by the sides 51, 52, and 53 other than the upper side 54 is provided in advance along both side edges and the bottom edge of the load-receiving member 20 and fixed by welding or the like (see Figures 21 and 22(b)). The upper side 54 of the frame member 50C is arranged as a lid that covers the top of the U-shaped frame portion, and is fixed with a fixing bolt 55 to a fixing nut 56 attached to the load-receiving member 20 (see Figure 22(a)). As shown in FIG. 22, the load-receiving member 20 has its upper surface covered by an upper surface plate 26, which has four through holes for fixing bolts 55 and has fixing nuts 56 welded to the inside.

[0057] In the shock absorber 2C, as shown in Figure 22, when replacing the contact plate member 30, the four fixing bolts 55 are loosened and the edge portion 54 that forms the upper cover of the frame member 50C is removed (see Figure 22(a)). Then, the contact plate member 30 is pulled up using the U-shaped frame portion of the frame member 50C and the load-receiving member 20 as guides. Then, the new contact plate member 30 is lowered and suspended down to the lower edge portion 53 using the U-shaped frame portion and the load-receiving member 20 as guides. In this state, the upper side portion 54 is attached to the contact plate member 30 from above so as to cover it, and is fixed to the fixing nuts 56 with the fixing bolts 55 at four locations.

[0058] According to the shock absorber 2C, the U-shaped sides of the frame member 50C, excluding the upper side 54, are fixed to the load receiving member 20. Therefore, when lowering the contact plate member 30, the U-shaped frame portion and the load receiving member 20 can be used as guides from the beginning to the end to hang it down to the lower side 53, allowing the contact plate member 30 to be replaced in a stable state. Furthermore, the contact plate member 30 can be replaced in a small space. The U-shaped side portions of the frame member 50C may be provided integrally as part of the load receiving member 20. Also, the frame member 50C may be configured so that its U-shaped side portions are attached to the load receiving member 20 sideways, and the contact plate member 20 can be attached and detached from the side.

[0059] As shown in FIGS. 23 to 25, the shock absorber 2D uses a contact plate member 30A, which is attached to cover the surface of the load receiving member 20. The load-receiving member 20 has step portions 27 cut out in a stepped shape on both sides, and a support portion 28 protruding forward is provided at the lower end (see FIG. 25, etc.). As shown in FIG. 24, the contact plate member 30A has a U-shaped cross section, and both side portions 36 are provided with mounting holes for fastening bolts 55, 55a for fastening to the load receiving member 20. As shown in FIG.

[0060] In the shock absorber 2D, as shown in Figures 23 and 25, when replacing the contact plate member 30A, the four fixing bolts 55, 55a on both side portions 36 that secure the contact plate member 30A are loosened and removed (see Figure 25(a)). Next, the contact plate member 30A is pulled up using the load-receiving member 20 as a guide. Thereafter, the new contact plate member 30A is lowered and suspended along the load-receiving member 20 to the lower support portion 28 using the U-shaped both side portions 36 as guides. In this state, the contact plate member 30A is fixed to the screw holes 57 with the four fixing bolts 55, 55a. According to the shock absorber 2D, the contact plate member 30A is fixed directly to the load receiving member 20 without the need for a frame member, thereby reducing the number of components. In addition, the contact plate member 30A can cover the entire surface of the load receiving member 20, thereby increasing the effective area for shock absorption. The contact plate member 30A may be slid from the side to be attached and detached.

[0061] As shown in Figures 26 to 28, the shock absorber 2E uses a contact plate member 30B, so that even when it is fixed with a fixing bolt 58 from the front buffer surface side, working space is ensured and the contact plate member 30B can be attached, detached, and replaced. 26, the contact plate member 30B is formed so that both side portions 37 protrude outward. Fixing grooves 38 are formed in both side portions 37 to receive plate-shaped fixing members 59 that are rotatable for fixing. The fixing grooves 38 are shaped according to the thickness and width of the fixing members 59, and have a length (depth) that allows them to fit approximately half the length of the fixing members 59.

[0062] The load-receiving member 20 has a support portion 28 at its lower end that protrudes forward. The load-receiving member 20 has threaded holes formed in the four corners of its front surface for fastening fixing bolts 58 that fasten fixing members 59. The contact plate member 30B is placed against the front surface of the load-receiving member 20, and the fixing members 59 are inserted into the fixing grooves 38 via the fixing bolts 58 and fastened to the threaded holes, thereby fixing both side portions 37 of the contact plate member 30B. Instead of the screw holes, fixing nuts may be attached to the rear side of the load receiving member 30B by welding or the like. In this fixed state, the fixing bolts 58 of the fixing members 59 that fix both side portions 37 of the contact plate member 30B are lower than the front surface of the contact plate member 30B, and the space (distance) to the front surface allows the fixing bolts 58 to be loosened, the fixing members 59 to be removed from the fixing grooves 38, rotated around the fixing bolts 58, and retreated from above the both side portions 37.

[0063] In the shock absorber 2E, when replacing the contact plate member 30B, the fixing bolts 58 of the fixing members 59 that fix the both side portions 37 of the contact plate member 30B are loosened, the fixing members 59 are removed from the fixing grooves 38, and the fixing members 59 are rotated around the fixing bolts 58 to move them away from above the both side portions 37 of the contact plate member 30B. Then, the contact plate member 30B is removed by pulling it up. Next, a new contact plate member 30B is hung down and the load is supported by the lower support portion 28. In this state, the fixing member 59 is rotated onto the fixing groove 38 of the contact plate member 30B, inserted into the fixing groove 38, and the loosened fixing bolt 58 is tightened. In this way, the contact plate member 30B can be replaced in a small space by loosening the fixing bolt 58 and rotating and retracting the fixing member 59.

[0064] According to the shock absorber 2E, no frame member is required, and the contact plate member 30B can be easily replaced simply by loosening the fixing bolts 58 and rotating and retracting the fixing member 59 using the fixing bolts 58 and the fixing member 59. Furthermore, only a small space is required for replacing the contact plate member 30B, and the load of the contact plate member 30B can be supported by the support parts 28, which can also be used to position the contact plate member 30B, allowing for efficient replacement work.

[0065] The load-receiving members 20, etc. and the frame members 50, etc. described in the above embodiments may be immersed in seawater, and may be constructed not only from stainless steel, but also from other corrosion-resistant metal materials, synthetic resin materials, hard rubber, etc., to withstand the load. As already explained, the contact plate member 30 and the like are made of a material (low-friction material) that has a small coefficient of friction μ (static coefficient of friction), little wear, and is strong enough to withstand an applied load, and are made of, for example, synthetic resin, metal, ceramic, etc. The coefficient of friction μ is preferably a low-friction material with μ=0.1 to 0.2, for example, which reduces the directionality of the sliding direction, reduces the shear load, and also reduces the tipping moment of the elastic buffer member 10.

[0066] As specifically explained above in conjunction with the embodiments, the shock absorber 1 of the present invention is a shock absorber 1 that absorbs and protects the load applied between a fixed support pile (first structure) B and a floating pier (second structure) A that moves relatively, and comprises a solid elastic shock absorber member 10 provided on the front surface of either the support pile B or the floating pier A (floating pier A), a load-receiving member 20 provided on the front surface of the elastic shock absorber member 10 that receives the load of the support pile B and the floating pier A and transmits it as surface pressure to the elastic shock absorber member 10, and a contact plate member 30 provided on the front surface of the load-receiving member 20 that makes surface contact with the support pile B and the floating pier A, reducing friction regardless of the direction of the load.

[0067] According to this configuration, by using the contact plate member 30 instead of the roller, it is possible to provide a shock absorber 1 that does not require a large space and is compact, can absorb the load regardless of the direction of the applied load, has a simplified structure, and is easy to maintain thanks to the contact plate member 30.

[0068] In the shock absorber 1A of the present invention, the contact plate member 30 is provided on a slide member 40 that is detachable from the load receiving member 20A, and the slide member 40 is configured to be replaceable by detaching the contact plate member 30 from the load receiving member 20A. According to this configuration, the contact plate member 30 can be separated from the load-receiving member 20A together with the slide member 40 and lifted up, eliminating the need to lift the entire shock absorber 1A onto land for replacement, improving the workability of the replacement work and enabling safe replacement.

[0069] In the buffer device 2 of the present invention, a contact plate member 30 has a stepped pressing portion 35 formed on its peripheral edge, and the pressing portion 35 is pressed by a frame member 50 having side portions 51 to 54 that are attached to the load-receiving member 20. The frame member 50 is configured so that the side portions 51, 52 on both sides are rotatably supported below or to the side of the load-receiving member 20, and the contact plate member 30 can be attached, detached, and replaced along the load-receiving member 20 through a rotated opening C. According to this configuration, the contact plate member 30, which has a stepped pressing portion 35 formed on its periphery, is rotated downward or sideways to attach to the load-receiving member 20 via the frame member 50, which forms an opening C on the upper or other side. This allows the contact plate member 30 to be attached and detached from the opening C of the rotated frame member 50 by working from either above or side. This allows the contact plate member 30 to be replaced in the small space that forms the opening C, and by leaving bolts and other parts that serve as the rotation center for replacement, positioning can be easily done. Furthermore, interference with piles, floating bodies, etc. can be minimized during the replacement work.

[0070] In the shock absorber 2A of the present invention, the side portions 51 and 52 on both sides of the opening C of the frame member 50A are configured to be bendable by a plurality of links 51a, 51b, 51c, 52a, 52b, and 52c. This allows the amount of protrusion caused by rotation of the frame member 50A to be kept small in accordance with the length of the split links 51a, 52a on one side, making it possible to replace the contact plate member 30 in an even smaller space. Also, by using the grooves of the frame member 50A of the split links 51b, 52b on the other side and the pressing portion 35 of the contact plate member 30 as guides, attachment and detachment can be performed smoothly, improving work efficiency.

[0071] In the shock absorbers 2B and 2C of the present invention, the frame members 50B and 50C are provided with at least side portions 53 that press the bottom portion of the load receiving member 20. This allows the load of the contact plate member 30 to be supported by the side parts 53 located at the bottom of the frame members 50B, 50C, eliminating the need to fix the contact plate member 30 while supporting the load during replacement work, minimizing the force required for the work, and enabling the replacement work to be carried out efficiently in a small space.

[0072] In the shock absorbers 2A to 2C of the present invention, the frame members 50A to 50C guide the pressing portion 35 of the contact plate member 30 for attachment, detachment, and replacement, so that the contact plate member 30 can be attached and detached to and from the load-receiving member 20 smoothly and easily, and work can be done efficiently even in a small space.

[0073] In the shock absorber 2D of the present invention, the contact plate member 30A is formed in a concave shape corresponding to the width or height of the load receiving member 20, and is configured so that the concave portion is placed over the load receiving member 20 and can be detached and replaced. As a result, by using the load receiving member 20 as a guide and pulling up the contact plate member 30A so that it covers the load receiving member 20, the contact plate member 30A can be fixed directly to the load receiving member 20 without the need for a frame member, thereby reducing the number of components. Also, the contact plate member 30A can cover the entire surface of the load receiving member 20, increasing the effective area for cushioning. Furthermore, the contact plate member 30A can be attached, detached, and replaced along the load receiving member 20, allowing replacement work to be done in a small space.

[0074] In the shock absorber 2E of the present invention, the contact plate member 30B is provided with recessed fixing grooves 38 on both sides in the attachment / detachment / replacement direction, and a fixing member 59 attached to the load-receiving member 20 is inserted into the fixing groove 38 so that it can be fixed and released. This makes it possible to easily replace the contact plate member 30B without the need for a frame member, by simply loosening the fastening of the fixing member 59 and rotating and retracting the fixing member 59. Furthermore, the space required for replacing the contact plate member 30B can be reduced, allowing for efficient replacement work.

[0075] In the shock absorbers 1 and 1A of the present invention, the elastic shock absorber 10 is provided with reinforcing plates 11b and 12b on the front and rear surfaces. With this configuration, the rigidity of the front and rear surfaces of elastic buffer member 10 can be increased, the tipping moment generated in elastic buffer member 10 can be reduced, and even large loads can be absorbed and cushioned stably. Similarly, in shock absorbers 2, 2A to 2E, elastic buffer member 10 is provided with reinforcing plates 11b, 12b on the front and rear surfaces, which increases the rigidity of the front and rear surfaces of elastic buffer member 10, reduces the tipping moment generated in elastic buffer member 10, and allows even large loads to be absorbed and cushioned stably.

[0076] In the shock absorbers 1 and 1A of the present invention, the contact plate member 30 is made of a low-friction material having a friction coefficient μ of about 0.1 to 0.2. According to this configuration, by using a low-friction material with a small friction coefficient μ for the contact plate member 30, such as resin, metal, ceramics, etc., it is possible to reduce the directionality of the load, reduce the shear load, and suppress wear. Similarly, in the shock absorbers 2, 2A to 2E, by using a low-friction material with a small friction coefficient μ for the contact plate member 30, such as resin, metal, ceramics, etc., it is possible to reduce the directionality of the load, reduce the shear load, and suppress wear.

[0077] In the shock absorbers 1, 1A of the present invention, the load receiving members 20, 20A are made of any one of metal material, synthetic resin material, and hard rubber. According to this configuration, the necessary rigidity can be ensured by these materials, and the load from the floating pier A can be transmitted as surface pressure to the elastic buffer member 10. Similarly, the necessary rigidity can be ensured by these materials in the buffer devices 2, 2A to 2E, and the load from the floating pier A can be transmitted as surface pressure to the elastic buffer member 10.

[0078] In the shock absorbers 1, 1A of the present invention, either the first structure or the second structure is formed of any one of a floating pier, a berthing facility, a bridge pier, and a water gate. According to this configuration, the shock absorbers 1, 1A can be applied to any of floating piers, quaying facilities, bridge piers, and floodgates, and by using the contact plate members 30 instead of rollers, they can be made compact without requiring a large space, can absorb loads regardless of the direction of the applied load, can have a simplified structure, and can be easily maintained by the contact plate members 30. Similarly, the shock absorbers 1, 1A can be applied to any of floating piers, quaying facilities, bridge piers, and floodgates with the shock absorbers 2, 2A to 2E, and by using the contact plate members 30 instead of rollers, they can be made compact without requiring a large space, can absorb loads regardless of the direction of the applied load, can have a simplified structure, and can be easily maintained by the contact plate members 30.

[0079] The shock absorbers 1 and 1A described in the above embodiment are merely examples, and the structures and shapes of the elastic shock absorber member 10, the load receiving members 20 and 20A, the contact plate member 30, and the slide member 40 are not limited to the illustrated examples, and other structures and shapes may be used. The same applies to the shock absorbers 2, 2A to 2E. Furthermore, the materials constituting the shock absorbers 1, 1A of the present invention are not limited to those described in the above embodiments, and are not limited in any way as long as they have the same functions. The same applies to the shock absorbers 2, 2A to 2E. [Explanation of symbols]

[0080] 1,1A Buffer device (mooring buffer device) 2. Shock absorber (mooring shock absorber) 2A~2E Shock absorber (mooring shock absorber) 10 Elastic cushioning material 11 Front flange 11a Bolt hole 11b Reinforcement plate 12 Rear flange 12a Bolt hole 12b Reinforcement plate 13 Rubber buffer 14 bolts and nuts 20 Load-receiving member 21 Front flange 21a screw hole 22 Rear flange 22a Bolt hole 22b Nut 23 Intermediate platform 23a Vertical member 23b Horizontal member 23c End cross member 24 volts 20A Load-bearing member 21A Front flange 21b Bolt hole 23A Intermediate platform 23Ac End cross member 25 Side plate 26 Top plate 27 Step 28 Support part 30 Contact plate member 30A~30B Contact plate member 31 Resin board 32 Resin board 33 Bolt holes with counterbore 34 volts 35 Presser foot 36,37 Both sides 38 Fixed groove 40 Slide member 41 long hole 42 bolt holes 43 screw holes 44 Bolts, nuts and washers 50 Frame members 50A~50C Frame members 51 Side part (side panel) 52 Side part (side panel) 51a, 51b split link 52a, 52b split link 51c, 52c connecting link 53 Side part (bottom plate) 54 Side (top) 55,55a Fixing bolt 56 Fixing nut 57 screw holes 58 Fixing bolt 59 Fixing member A Floating Pier (Second Structure) B Support pile (first structure) C opening D Installation space (width of support pile) H dimension (distance between floating pier and supporting pile)

Claims

1. A mooring shock absorber that absorbs and protects a load applied between a fixed first structure and a relatively moving second structure, a solid elastic buffer member provided on a front surface of either the first structure or the second structure; a load-receiving member provided on a front surface of the elastic buffer member, receiving the load of the first structure and the second structure and transmitting the load as a surface pressure to the elastic buffer member; a contact plate member provided on a front surface of the load-receiving member and in surface contact with a surface of the other of the first structure and the second structure; the contact plate member is made of a material that can slide on the surface when subjected to the load, the contact plate member is provided on a slide member that is detachable from the load receiving member, The slide member is configured to be replaceable by being detached together with the contact plate member from the load receiving member. A mooring shock absorber characterized by:

2. A mooring buffer device that absorbs and protects a load applied between a fixed first structure and a relatively moving second structure, a solid elastic buffer member provided on a front surface of either the first structure or the second structure; a load-receiving member provided on a front surface of the elastic buffer member, receiving the load of the first structure and the second structure and transmitting the load as a surface pressure to the elastic buffer member; a contact plate member provided on a front surface of the load-receiving member and in surface contact with a surface of the other of the first structure and the second structure; the contact plate member is made of a material that can slide on the surface when subjected to the load, the contact plate member has a stepped pressing portion formed on its peripheral edge, and the pressing portion is pressed by a frame member having a side portion attached to the load receiving member; The frame member is configured such that the side portions on both sides are rotatably supported below or to the side of the load receiving member, and the contact plate member can be attached, detached, and replaced along the load receiving member through a rotated opening. A mooring shock absorber characterized by:

3. The frame member is configured so that the side portions on both sides of the opening can be bent by a plurality of links.

3. The mooring shock absorber according to claim 2.

4. The frame member is configured to include at least the side portion that presses against the bottom portion of the load-receiving member.

3. The mooring shock absorber according to claim 2.

5. A mooring buffer device that absorbs and protects a load applied between a fixed first structure and a relatively moving second structure, a solid elastic buffer member provided on a front surface of either the first structure or the second structure; a load-receiving member provided on a front surface of the elastic buffer member, receiving the load of the first structure and the second structure and transmitting the load as a surface pressure to the elastic buffer member; a contact plate member provided on a front surface of the load-receiving member and in surface contact with a surface of the other of the first structure and the second structure; the contact plate member is made of a material that can slide on the surface when subjected to the load, The contact plate member is formed in a concave shape corresponding to the width or height of the load receiving member, and is configured to be detachable and replaceable by covering the concave portion along the load receiving member. A mooring shock absorber characterized by:

6. The frame member guides the pressing portion of the contact plate member for attachment, detachment, and replacement.

5. The mooring shock absorber according to claim 2, wherein the shock absorber is a mooring shock absorber.

7. A mooring buffer device that absorbs and protects a load applied between a fixed first structure and a relatively moving second structure, a solid elastic buffer member provided on a front surface of either the first structure or the second structure; a load-receiving member provided on a front surface of the elastic buffer member, receiving the load of the first structure and the second structure and transmitting the load as a surface pressure to the elastic buffer member; a contact plate member provided on a front surface of the load-receiving member and in surface contact with a surface of the other of the first structure and the second structure; the contact plate member is made of a material that can slide on the surface when subjected to the load, The contact plate member has recessed fixing grooves on both sides in the attachment / detachment / replacement direction, A fixing member to be attached to the load receiving member is inserted into the fixing groove and configured to be fixed and released. A mooring shock absorber characterized by:

8. The elastic cushioning member has reinforcing plates on the front and rear surfaces. The mooring shock absorber according to any one of claims 1 to 7.

9. The contact plate member is made of a low-friction material having a friction coefficient of 0.1 to 0.

2.

9. The mooring shock absorber according to claim 1.

10. The load-receiving member is made of any one of a metal material, a synthetic resin material, and a hard rubber. The mooring shock absorber according to any one of claims 1 to 9.

11. Either the first structure or the second structure is composed of any one of a floating pier, a berthing facility, a bridge pier, and a water gate. The mooring shock absorber according to any one of claims 1 to 10.

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