JP2016204906A - Protective cover for horizontal-type pneumatic fender, horizontal-type pneumatic fender, and method of use of horizontal-type pneumatic fender - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective cover for a horizontal-type pneumatic fender, a horizontal-type pneumatic fender, and a method of use of the horizontal-type pneumatic fender that suppress swelling and deterioration of the fender due to adhesion of oil on a water surface.SOLUTION: A detachable protective cover 2 comprising a protective layer body 3 and a fitting part 4 is fitted on a horizontal-type pneumatic fender 1A. The protective layer body 3 covers the fender 1A on at least an outer surface of an entire barrel part 1a and an outer surface area of each mirror part 1b on an outer side in a radial direction, the outer surface area accounting for a half of a total surface area of the mirror part 1b. When oil C floats in a water area where the fender 1A has been installed, the protective layer body 3 isolates the area covered by the protective layer body 3 of the fender 1A from the oil C.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a protective cover for a horizontal pneumatic fender, a horizontal pneumatic fender, and a method of using the horizontal pneumatic fender, and more specifically, the fouling material adheres to oil floating on the water surface. The present invention relates to a protective cover for a horizontal pneumatic fender capable of suppressing swelling deterioration, a horizontal pneumatic fender, and a method of using the horizontal pneumatic fender.

  2. Description of the Related Art Pneumatic fenders are known that are installed on the quay wall or on the shore side for the purpose of preventing damage to the hull and quay when the ship is berthing. The pneumatic fender is a hollow body made of rubber in which a reinforcing material is embedded. The inside of the hollow is filled with air, and when the ship touches the shore, the impact is mitigated by the elastic force generated by the enclosed air.

  The form of the pneumatic fender can be roughly divided into two types, a horizontal type and a vertical type. The horizontal pneumatic fender is used by floating in water with the longitudinal direction being horizontal. The vertical pneumatic fender is used by suspending a predetermined amount of water in the hollow interior and floating on the water in a standing state in which a part thereof is submerged in water and the longitudinal direction is vertical.

  By the way, when oil strays and stays in the water area where the pneumatic fender is installed, the oil floating on the water surface is attached to the outer surface of the pneumatic fender. Since the conventional pneumatic fender does not consider such oil, when this state continues for a long time, the rubber on the part where the oil adheres swells and deteriorates. As a result, there is a problem that the pneumatic fender cannot be used and the service life is shortened.

  As for the horizontal pneumatic fender, a sheet-like protective member that covers the outer surface of the fender has been proposed (see, for example, Patent Document 1). However, this protective member is intended to prevent damage to the fenders caused by contact with the hull or the like, and is not intended for swelling deterioration due to the oil described above. When this protective member is attached to the fender, there are seams in the circumferential direction, and there are cuts at the left and right ends. Since the horizontal pneumatic fender rotates around the central axis of the mirror during use, oil floating on the water surface adheres to the outer surface of the fender through the joints and cuts even when this protective member is installed. . Therefore, with this protective member, it has been difficult to suppress swelling deterioration of the fender.

JP-A-5-25812

  An object of the present invention is to provide a protective cover for a horizontal pneumatic fender, a horizontal pneumatic fender, and a horizontal pneumatic fender that can prevent the floating fouling from adhering to floating oil on the water surface. It is to provide a usage method.

  In order to achieve the above object, the protective cover for a horizontal pneumatic fender according to the present invention is detachably attached to a horizontal pneumatic fender having a bowl-shaped mirror connected to both left and right ends of a cylindrical body. A protective cover for a horizontal pneumatic fender that is mounted on the outer surface of the entire body and at least a region of the outer surface that is half the total area of the mirror portion on the radially outer side of each mirror portion. A protective layer body to be coated; and a mounting portion for disposing the protective layer body at a predetermined position of the fender. When the protective layer body is arranged at a predetermined position of the fender, the protective layer body It is possible to isolate the floating oil from the range covered with the protective layer of the fender.

  A horizontal pneumatic fender according to the present invention is a horizontal pneumatic fender having a cylindrical body part and bowl-shaped mirror parts connected to the left and right ends of the body part, at least the whole body part. And a removable protective layer covering the outer surface of each mirror part and the outer surface area that is half the total area of the mirror part on the outer side in the radial direction of each mirror part. It is possible to isolate the area covered with the protective layer of the fender.

  Another horizontal pneumatic fender according to the present invention is a horizontal pneumatic fender having a cylindrical body and bowl-shaped mirrors connected to the left and right ends of the body, at least the body. A protective layer body that covers the outer surface of the entire part and the outer surface area that is half the total area of the mirror part on the outer side in the radial direction of each mirror part, and this protective layer body is formed of an oil-resistant member In addition, the protective layer body is provided integrally by vulcanization adhesion, and the protective layer body makes it possible to isolate the oil floating on the water surface from the area covered by the protective layer body of the fender. .

  The method of using the horizontal pneumatic fender according to the present invention is the horizontal pneumatic fender described above, wherein the lower end position of the inner peripheral edge of the protective layer body in each mirror part is set to a position higher than the water surface position. When the oil is floating in the water area where the fender is installed, the protective layer body separates the oil and the area covered by the protective layer body of the fender. And

  According to the present invention, there is provided a protective layer body that covers at least the outer surface of the entire body portion and the outer surface area that is half the total area of the mirror portion on the outer side in the radial direction of each mirror portion. The body allows the oil floating on the water surface to be separated from the area covered by the protective layer body of the fender, thus preventing the area covered by the protective layer body from being swollen and deteriorated by the oil floating on the water surface. it can. Moreover, since a layered protective layer body is used, there is no substantial adverse effect on the impact mitigating performance of the fender.

  When the protective layer body covers the outer surface of the entire body part and the outer surface of the entire mirror part, the entire outer surface of the fender is substantially protected from oil floating on the water surface by the protective layer body. Is done. Thereby, it becomes more advantageous to suppress the swelling deterioration of the fender.

  When the protective layer body is formed of an oil-resistant member, it is advantageous to prevent swelling deterioration in a range covered with the protective layer body. As the oil resistant member, for example, an elastic member containing acrylonitrile-butadiene rubber is used.

It is explanatory drawing which illustrates embodiment of the protective cover for horizontal pneumatic fenders of this invention by a side view. It is explanatory drawing which illustrates the protective cover for horizontal type air fenders of FIG. 1 by the front view seen from the mirror part side. It is explanatory drawing which illustrates another embodiment of the protection cover for horizontal type | mold fenders of this invention by a side view. It is explanatory drawing which illustrates the protective cover for horizontal type air fenders of FIG. 3 by the front view seen from the mirror part side. It is explanatory drawing which illustrates embodiment of the horizontal type pneumatic fender of this invention by a longitudinal cross-sectional view. It is explanatory drawing which illustrates another embodiment of a horizontal type air fender in a longitudinal cross-sectional view. It is explanatory drawing which illustrates a horizontal type air fender in the longitudinal cross-sectional view.

  Hereinafter, a protective cover for a horizontal pneumatic fender according to the present invention, a horizontal pneumatic fender, and a method of using the horizontal pneumatic fender will be described based on the embodiments shown in the drawings.

  A conventional horizontal pneumatic fender 1A (hereinafter referred to as fender 1A) includes, as illustrated in FIG. 7, a cylindrical body 1a and bowl-shaped mirrors connected to the left and right ends of the body 1a. Part 1b. A base part 1c and a base part 1d are provided on the right and left mirror parts 1b, respectively. Only the base part 1c may be provided in the mirror part 1b on one side.

  The body part 1a and the mirror part 1b are configured by a member in which a plurality of reinforcing layers are laminated between an inner layer rubber and an outer layer rubber. Air A is filled in a hollow internal space formed by the body portion 1a and the mirror portion 1b. In the drawing, the boundary between the body portion 1a and the mirror portion 1b is indicated by a two-dot chain line.

  The base part 1c is provided with an inlet for injecting air A, a safety valve for preventing the internal pressure of the fender 1A from becoming excessive, a pressure sensor for measuring the internal pressure, and the like. One end of a separate guy chain 5 is connected to each of the cap parts 1c and 1d.

  When the fender 1A is installed on the quay wall or on the side of the quay, the other end of each guy chain 5 connected to the base parts 1c, 1d is fixed to the quay or the hull, respectively. Then, the fender 1A in which the air A is accommodated in the hollow internal space is placed floating in the sea or the like with the longitudinal direction (the cylinder axis direction of the body portion 1a) lying sideways.

  Therefore, when the oil C drifts and stays in the water area where the fender 1A is installed, the oil C floating on the water surface always comes into contact with the body portion 1a and the mirror portion 1b. If the fender 1A continues to be used as it is, the outer layer rubber forming the body portion 1a and the mirror portion 1b swells with the oil C. Due to this swelling, the strength of the body part 1a and the mirror part 1b is reduced, and it becomes impossible to use the fender 1A.

  Therefore, the protective cover 2 (hereinafter referred to as the protective cover 2) for the horizontal pneumatic fender according to the present invention illustrated in FIGS. The protective cover 2 includes a protective layer body 3 that covers at least an outer surface of the entire body portion 1a and an outer surface area that is half the total area of the mirror portion 1b on the radially outer side of each mirror portion 1b, and a protective layer. And an attachment portion 4 for disposing the body 3 at a predetermined position of the fender 1A.

  The protective layer body 3 is a sheet in which an elastic member such as rubber or a resin is thinly formed in a layer shape, and the thickness thereof is, for example, 1 mm to 30 mm. The protective layer body 3 has a specification that substantially does not soak water. The cylindrical protective layer body 3 is continuous without any breaks in both the circumferential direction and the cylinder axis direction. The protective layer body 3 is manufactured, for example, by integrally molding a member into a cylindrical shape. Alternatively, the cylindrical protective layer body 3 is manufactured by joining a plurality of members. In this case, the joint seam of each member is processed so as not to generate a gap so that the oil C does not pass. By the cylindrical protective layer body 3 extrapolated to the fender 1A, at least the outer surface of the entire body portion 1a and the outer surface that is half the total area of the mirror portion 1b on the radially outer side of each mirror portion 1b. The area is covered. The total area of the mirror part 1b does not include the areas of the base parts 1c and 1d.

  More specifically, the region of the mirror portion 1b covered with the protective layer body 3 is an annular region from the outer edge of the mirror portion 1b to the dimension H radially inward as illustrated in FIG. The dimension H is set to, for example, 1 m or more, more preferably 2 m or more. The protective layer body 3 may cover an area that is at least half of the total area of each mirror portion 1b.

  The protective layer body 3 can be formed using an oil-resistant member, or can be formed using a non-oil-resistant member. Moreover, the protective layer body 3 can be formed using an elastic member, or the protective layer body 3 can be formed using a non-elastic member. For example, the protective layer body 3 is formed using an elastic member containing acrylonitrile-butadiene rubber excellent in oil resistance. Other examples of the elastic member having oil resistance include fluorine rubber, chloroprene rubber, and chlorinated polyethylene rubber.

  There may be a slight gap between the inner surface of the protective layer body 3 and the outer surface of the body portion 1a and the mirror portion 1b, or a close contact state without a gap. If the protective layer body 3 is formed of an elastic member, the inner diameter of the protective layer body 3 and the body portion 1a are increased by expanding the cylindrical protective layer body 3 and extrapolating the body portion 1a and the mirror portion 1b. Can be brought into close contact with the outer surface.

  As the attachment part 4, for example, a string-like body 4b (right-side string-like body 4b) that connects the protective layer body 3 extrapolated to the fender 1A and the right mirror part 1b side, and the protective layer body 3 A string-like body 4b (left-side string-like body 4b) that connects the left mirror part 1b side is used. The right end of the protective layer 3 and the surface of the right mirror 1b are directly connected by the right string 4b, or the cap provided on the right end of the protective layer 3 and the right mirror 1b. 1b is connected. The left end of the protective layer body 3 and the surface of the left mirror part 1b are directly connected by the left string-like body 4b, or the base part provided on the left end part of the protective layer body 3 and the left mirror part 1b. 1d is connected.

  In this embodiment, one end of the right string 4b is connected to the right end opening edge of the protective layer body 3 via the connection member 4a. The other end of the right string 4b is connected to the base part 1c via a fixing member 4c fitted on the base part 1c. One end of the left string 4b is connected to the left edge of the protective layer 3 through the connecting member 4a. The other end of the left string 4b is connected to the base part 1d via a fixing member 4c fitted on the base part 1d.

  As the string-like body 4b, a rope or metal chain made of resin or natural fiber can be used. Using a rope made of resin or natural fiber as the string-like body 4b is advantageous for preventing the surface of the mirror portion 1b from being damaged due to the string-like body 4b.

  When this protective cover 2 is used, the protective cover 2 is attached to the fender 1A in which air A is accommodated in a hollow internal space on the ground or on a ship. Thereafter, as illustrated in FIG. 1, the fender 1 </ b> A is installed on the quay wall or on the shore side. The lower end position of the inner peripheral edge of the protective layer body 3 in each mirror part 1b is set to a position higher than the water surface position.

  When the oil C drifts in the water area where the fender 1A is installed and the periphery of the fender 1A is surrounded by the oil C floating on the water surface, the state where the oil C adheres to the outer surface of the protective layer 3 continues. Since a certain area outside the body portion 1a and the mirror portion 1b in the radial direction is covered with the protective layer 3, the oil C does not adhere even if the fender 1A rotates around the cylinder axis. , Isolated from oil C. The oil C varies with the water surface, but the vertical fluctuation of the water surface during normal times at a port or the like is about 1 to 2 m. Further, the fender 1A moves up and down to some extent in synchronization with the wave (water surface). Therefore, the up-and-down fluctuation range of the water surface position is the lower end portion of the body portion 1a that is in the horizontal state.

  Even if there are some gaps between the inner surface of the protective layer body 3 and the outer surfaces of the body part 1a and the mirror part 1b, the water surface position must not exceed the lower end position of the inner peripheral edge of the protective layer body 3 in each mirror part 1b. In this case, oil C does not enter between the gaps. Therefore, unless the wave is higher than normal, the area covered with the protective layer 3 of the fender 1A is isolated from the oil C, and the oil C is prevented from adhering to the fender 1A in normal times. it can. When it is not normal (when the wave is high), it is better to refrain from using the fender 1A. Therefore, by using the protective cover 2 of the present invention, the swelling deterioration of the fender 1A due to the oil C floating on the water surface can be effectively suppressed.

  Further, since the thin protective layer body 3 is used, even when the protective cover 2 is attached to the fender 1A, the fender 1A is not significantly difficult to compress and restore. Therefore, the protective cover 2 does not cause a substantial adverse effect on the impact mitigation performance of the fender 1A.

  When the protective layer body 3 is formed of a non-oil resistant member, the protective layer body 3 is deteriorated due to swelling or the like at an early stage due to the attached oil C as compared with the case where the protective layer body 3 is formed of an oil resistant member. Therefore, when the deterioration of the protective layer body 3 is discovered or after a preset period has elapsed, the deteriorated protective layer body 3 is removed from the fender 1A and replaced with a new protective layer body 3. Alternatively, the protective cover 2 may be replaced with a new one.

  When the protective layer body 3 is formed of an oil resistant member, swelling deterioration in a range covered with the protective layer body 3 can be prevented for a long period of time as compared to the case of forming the protective layer body 3 with a non-oil resistant member. Therefore, it is not necessary to replace with a new protective layer body 3 (protective cover 2). Alternatively, the frequency of replacement with a new protective layer body 3 (protective cover 2) can be reduced.

  When the inner surface of the protective layer body 3 and the outer surfaces of the body portion 1a and the mirror portion 1b are in close contact with each other, there is an advantage that the protective layer body 3 is hardly displaced with respect to the fender 1A. Along with this, the strength of the attachment portion 4 can be set low. Further, even when the water surface position exceeds the lower end position of the inner peripheral edge of the protective layer body 3 in each mirror portion 1b, the oil C hardly enters between the protective layer body 3 and the mirror portion 1b. When the inner surface of the protective layer body 3 and the outer surfaces of the body portion 1a and the mirror portion 1b are brought into close contact with each other, the protective layer body 3 may be formed of an elastic member that can follow the compression and decompression deformation of the fender 1A. .

  If a gap is provided between the inner surface of the protective layer body 3 and the outer surfaces of the body portion 1a and the mirror portion 1b, the protective layer body 3 has an advantage that the compression and decompression deformation of the fender 1A is hardly affected. is there. Moreover, since the elasticity etc. requested | required in order to follow the compression and decompression deformation | transformation of the fender 1A become low, the choice of the member which can be employ | adopted as the protective layer body 3 spreads.

  In the above-described embodiment, a part of the outer surface of each mirror portion 1 b is covered with the protective layer body 3, but there is a portion exposed without being covered with the protective layer body 3. Therefore, in the embodiment of the protective cover 2 illustrated in FIGS. 3 and 4, the protective layer body 3 is configured to cover the outer surface of the entire body portion 1a and the outer surface of the entire mirror portion 1b.

  This protective layer body 3 differs from the previous embodiment only in the range in which the fender 1A is covered (the size of the protective layer 3 with respect to the fender 1A).

  The attachment part 4 of this embodiment is composed of a fastening band 4d and a fastening metal 4e. The fastening band 4d fastens the openings at the right end and the left end of the cylindrical protective layer body 3 and fixes them to the base portions 1c and 1d, respectively. The fastener 4e fastens and fixes the fastening band 4d with a predetermined length and releases it.

  In order to dispose the protective cover 2 at a predetermined position of the fender 1A, after the protective layer body 3 is extrapolated to the fender 1A (the body part 1a and the respective mirror part 1b), the right end of the protective layer body 3 is placed. The openings at the left ends are fastened by the attachment part 4 and attached to the base parts 1c and 1d.

  According to this embodiment, substantially the entire outer surface of the fender 1A is isolated and protected from the oil C floating on the water surface by the protective layer body 3. Thereby, it becomes more advantageous to suppress the swelling deterioration of the fender 1A.

  Also in this embodiment, various configurations described in the previous embodiment can be employed. Also, the method of use and replacement can be performed in the same manner as in the previous embodiment.

  Further, the horizontal pneumatic fender 1 of the present invention (hereinafter referred to as fender 1) is provided with various protective layer bodies 3 detachably with respect to the conventional fender 1A.

  Another embodiment of the fender 1 is illustrated in FIG.

  The fender 1 includes a protective layer body 3 that covers at least the outer surface of the entire body portion 1a and the outer surface area that is half the total area of the mirror portion 1b on the radially outer side of each mirror portion 1b. The protective layer body 3 is integrated as a fender 1 by vulcanization adhesion. That is, the inner surface of the protective layer body 3 is tightly fixed with no gap between the opposing surface. The protective layer body 3 can be additionally vulcanized and bonded to the outer surface of the conventional fender 1A, or the protective layer body 3 can be vulcanized and bonded to the outer layer rubber of the conventional fender 1A.

  As the protective layer body 3, the various specifications described above can be used. However, since it is not the specification which only the protective layer body 3 can attach or detach, the protective layer body 3 cannot be replaced | exchanged. Therefore, the protective layer body 3 is formed of an oil resistant member. Moreover, since it is necessary for the protective layer body 3 to follow compression and decompression deformation, it is preferably formed of an elastic member such as rubber.

  The method of using the fender 1 is the same as in the above-described embodiment. According to the fender 1, the area covered by the protective layer 3 of the fender 1 is isolated from the oil C floating on the water surface, and the oil C is substantially prevented from adhering to the fender 1. it can. Therefore, the swelling deterioration of the fender 1 due to the oil C floating on the water surface can be effectively suppressed.

  This fender 1 has the advantage that the mounting portion 4 described above is unnecessary and the advantage that the protective layer body 3 does not shift.

  In the embodiment illustrated in FIG. 5, a part of the outer surface of each mirror portion 1 b is covered with the protective layer body 3, but there is a portion exposed without being covered with the protective layer body 3. Therefore, in the embodiment of the fender 1 illustrated in FIG. 6, the protective layer body 3 is configured to cover the outer surface of the entire body portion 1a and the outer surface of the entire mirror portion 1b.

  According to this embodiment, substantially the entire outer surface of the fender 1 is isolated and protected from the oil C floating on the water surface by the protective layer body 3. Thereby, it becomes more advantageous to suppress the swelling deterioration of the fender 1.

DESCRIPTION OF SYMBOLS 1 Horizontal pneumatic fender 1A of this invention Conventional horizontal pneumatic fender 1a Body part 1b Mirror part 1c Base part (right side)
1d Base part (left side)
2 Protective cover 3 Protective layer body 4 Attachment portion 4a Connection member 4b String-like body 4c Fixing member 4d Fastening band 4e Fastening bracket 5 Guy chain A Air C Oil

Claims (10)

A protective cover for a horizontal pneumatic fender that is detachably attached to a horizontal pneumatic fender having a bowl-shaped mirror connected to both left and right ends of a cylindrical body,
A protective layer covering at least the outer surface of the entire body part and the outer surface of the outer surface in the radial direction of each mirror part which is half the total area of the mirror part, and this protective layer body is a predetermined part of the fender A mounting portion disposed at a position, and when disposed at a predetermined position of the fender, the protective layer body covers the oil floating on the water surface and the fender material covered by the protective layer body; Protective cover for horizontal pneumatic fenders, characterized in that it can be isolated.   The protective cover for a horizontal pneumatic fender according to claim 1, wherein the protective layer body covers an outer surface of the entire body portion and an outer surface of the entire mirror portion.   The protective cover for a horizontal pneumatic fender according to claim 1, wherein the protective layer body is formed of an oil-resistant member.   The protective cover for a horizontal pneumatic fender according to claim 3, wherein the oil-resistant member is an elastic member containing acrylonitrile-butadiene rubber. In a horizontal pneumatic fender having a cylindrical body part and a bowl-shaped mirror part connected to both left and right ends of the body part,
A removable protective layer body covering at least the outer surface of the entire body part and an outer surface area that is half the total area of the mirror part on the outer side in the radial direction of each mirror part; A horizontal pneumatic fender capable of isolating the oil floating on the fender and the area covered with the protective layer of the fender. In a horizontal pneumatic fender having a cylindrical body part and a bowl-shaped mirror part connected to both left and right ends of the body part,
A protective layer body covering at least the outer surface of the entire body part and the outer surface area that is half the total area of the mirror part on the outer side in the radial direction of each mirror part is provided. It is formed and provided integrally by vulcanization adhesion, and by this protective layer body, it is possible to isolate the oil floating on the water surface from the area covered by the protective layer body of the fender. Features a horizontal pneumatic fender.   The horizontal pneumatic fender according to claim 5, wherein the protective layer body is formed of an oil-resistant member.   The horizontal pneumatic fender according to claim 6 or 7, wherein the oil-resistant member is an elastic member containing acrylonitrile-butadiene rubber.   The horizontal pneumatic fender according to any one of claims 5 to 8, wherein the protective layer body covers an outer surface of the entire body portion and an outer surface of the entire mirror portion.   The horizontal pneumatic fender according to any one of claims 5 to 9 is installed with the lower end position of the inner peripheral edge of the protective layer body in each mirror part set higher than the water surface position. Use of a horizontal pneumatic fender that isolates the oil and the area covered by the protective layer of the fender by the protective layer when oil is floating in the water area where the dredger is installed Method.

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