JP2003041553A - Fender for floating structure and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fender for a floating structure easily attachable/ detachable to/from a column type frame varied in form. SOLUTION: This fender 6 is provided with a float 3 and the column type frame 1 for connecting and fixing the float. The fender 6 used for a preserve 2 for mooring a ship is constructed of a resiliently deformable elastic material and formed into a spiral shape woundable around a frame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fender for a floating structure, such as a floating pier, aquaculture cage, and the like, for mooring ships and a method for manufacturing the same.

[0002]

2. Description of the Related Art Usually, a floating structure of this type has a structure in which a plurality of floats are connected and fixed by a metal frame. In a floating pier, a deck is mounted on the frame, and in a fish cage, 4 A net is installed inside a frame formed in a rectangular frame shape or a circular shape to form an aquaculture area. In such a floating structure, when the ship is moored, they often come into contact with each other. Usually, in order to mitigate the impact at that time and prevent damage to the hull and the floating structure, the side of the ship or the floating structure Fenders are often attached to objects. As this kind of fender, for example, the structure disclosed in Japanese Patent Laid-Open No. 7-292620 is known. It is described that the frame is provided with a locking member having a T-shaped cross section, and a fender is engaged with the locking member, which facilitates replacement.

[0003]

In the fender described in the above publication, an engaged member is formed on the fender and an engaging member is formed on the frame side so that both are engaged and fixed. Therefore, the engaging member must be attached to the frame side,
The workability is not always good. In reality, it is often the case that a thick rope is wound around the frame or old tires are hung by the rope.

The present invention has been made in consideration of the above circumstances, and is easy to install and remove.
Another object is to provide a fender for a floating structure that can be attached to most columnar frames without any special processing on the frame side.

The present invention (claim 1) comprises at least a float and a columnar frame for connecting and fixing the float,
A fender for a floating structure on which a ship is moored,
The elastic member is elastically deformable, and is formed in a spiral shape that can be wound around the frame.

In such a structure, the fender is helically wound around a predetermined portion of the frame by utilizing its elasticity. Since the fender is made of an elastic material, the pitch can be changed during winding. Further, it can be wound regardless of the sectional shape of the frame. That is, a frame having a circular cross section can be wound closely even if it has a different diameter, and a frame having a quadrangular cross section, for example, can be wound around this. When the diameter of the frame is larger than the inner diameter of the fender, after the winding, the fender elastically tightens the frame to fix the position.

In the present invention (claim 2), the fender is formed of a solid body, and is formed into a rectangular parallelepiped having a flat cross section. In such a structure, the flat surface of the fender comes into contact with the frame, and especially in the case of a cylindrical frame, the contact area becomes large, and the fender elastically tightens the frame to fix the position.

In the present invention (claim 3), the fender comprises a hollow tube having a circular cross section. With such a structure, the weight of the fender is reduced, the elasticity is increased, and the cushioning action is increased.

In the present invention (claim 4), the fender for the floating structure is manufactured by heating and vulcanizing a thin unvulcanized rubber spirally wound around a metal columnar body. It is something. According to such a manufacturing method, the spiral fender can be formed at low cost and by simple operation without using a die having a complicated structure.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partial perspective view showing a state in which a fender is helically attached to a frame of a floating structure, for example, aquaculture cage, 1 is a columnar metal frame in the cage 2 and has a net. It is formed in a square shape for installation. Specifically, the frame 1 has a three-dimensional structure such as a frame assembled vertically and horizontally in a lattice pattern and a reinforcing frame provided obliquely, and the frame itself is a hollow body having a circular cross section. Has become. 3 is a cylindrical float attached to the lower position of this frame. The float 3 is an appropriate connecting and fixing member 4 such as a wire or rope,
The whole circumference is evenly tied up at several places and connected and fixed to the frame 1. A circumferential groove 5 for winding the connection fixing member 4 is formed on the float 3.

[0012] Here, a vessel is moored in the cage 2, and required work such as getting on and off of a person, capturing of cultured fish, feeding, etc. is performed. Fenders are usually equipped to prevent damage to the ship. 6 is the fender, which is formed by spirally winding it around the outermost frame 1 of the cage 2. The fender 6 is made of elastic material such as EP (ethylene propylene) rubber having a JISA hardness of about 70 degrees,
As shown in FIG. 2 (b), for example, it is a solid body formed into a rectangular parallelepiped having a width of 50 mm and a thickness of 10 mm, and a spiral strip having a required length, for example, about 1 m. is there.

Therefore, the solid fender 6 made of an elastic material is wound around one end of the frame 1 as shown in FIG. 2 (a) and spirally adhered to the surface of the frame 1. Wrap up to the end. In that case, if the inner diameter of the fender 6 is set to be smaller than the outer diameter of the frame 1, the tightening force works by the elastic force after winding,
The position of the fender 6 is fixed by tightening the frame 1. In this case, when the frame 1 has a cylindrical shape, the flat surface of the solid fender has a large contact area with the cylindrical frame 1, and the fixing force of the fender 6 to the frame 1 increases. Then, it is securely fixed. An example of the outer dimensions of the frame 1 and the fender 6 is shown. The frame 1 has an outer diameter of 60 mm, and the fender 6 has an inner diameter of 50 m.
The outer diameter of the frame is smaller than that of m, and the frame is attached to the frame 1 in a spiral shape over a length of about 1 m. If the fender 6 is wound and mounted in this way, the fender 6 itself generates a tightening force due to elasticity after being wound, and the fender 6 is stably and reliably fixed to the frame 1 to improve its mounting workability. Further, the fender 6 can be easily removed from the frame 1 if necessary.

Further, since the fender 6 is made of an elastic material and can be deformed, the winding pitch, that is, the interval of the spiral portion can be freely changed and adjusted during the winding, so that the branching is performed during the winding as shown in FIG. Even if the frame 1 is present, it can be wound (avoid) over it without any hindrance. Even if the frame 1 is curved, it can be wound along it. As a result, even a frame having a complicated shape can be supported and can be attached.
Further, in the frame 1 having a circular cross section, the fender 6 can be wound in close contact with it even if the diameter thereof is different.
Even if the frame 1 has a square cross section, the fender 6
Can be wound and can be mounted regardless of the cross-sectional shape of the frame 1. Therefore, it can be easily attached to most of the columnar type frames 1.

FIG. 4 shows a case in which another form of the fender 6B, that is, the fender 6B, which is a hollow tube having a circular cross section, is mounted in a spiral shape. Also in this case, the fender 6B is made of an elastic material such as rubber and is a rubber tube (rubber hose) having a hollow inside, which is wound around the frame 1 in a spiral shape. The fender 6B is, for example, a cylindrical fender 6 having a hollow body with a diameter of 30 mm and a wall thickness of 5 mm.
It can be B.

This fender 6B having a hollow structure is also used for the frame 1
In this case, the elastic force of the elastic material is used to sufficiently tighten and fix the elastic member, and the elastic deformation force allows the pitch to be adjusted arbitrarily for winding. Further, the fender 6B in this case has a hollow interior, which reduces the weight and also has the advantage that the elasticity is increased due to the presence of the hollow portion, so that the cushioning effect is increased.

FIG. 5 shows a fender 6 made of the above elastic material,
By attaching the cage 2 between the frame 1 and the float 3 so as to be sandwiched between them, the fender function is fulfilled, and at the same time, the friction between the float 3 and the frame 1 is prevented. By thus forming the fender 6 in a spiral shape on the portion of the frame 1 supporting the float 3, the wound fender 6 protects the frame 1 and the float 3 from the impact when the ship is moored. This prevents the frame 1 and the float 3 from being rubbed against each other and worn, thereby extending the life of the facility and reducing the operating cost. Further, due to the fender 6 made of an elastic material spirally applied to the frame 1 shown in each of the above-mentioned examples, the rust-preventive film or the like formed on the surface of the frame 1 itself contacts and wears when the ship is docked on the cage. You can also prevent it from being damaged.

In the above example, the cage was described as the floating structure, but it can be applied to other floating structures such as a floating pier. In the case of a floating pier, the deck is mounted on the frame.

The fender 6 is manufactured by spirally winding an elongated unvulcanized rubber 7 formed by extrusion as shown in FIG. 6, and putting it in a vulcanization pot and heating it. It is done by doing. Specifically, an aluminum columnar body 8 having a diameter of 5 cm and a length of 1.3 m has a rectangular cross section (50 mm
× 10 mm), 4 m long unvulcanized EP rubber 7 is wrapped (the length becomes 1 m by making it spiral), and it is vulcanized by heating at 150 ° C for 25 minutes in a steam vulcanization kettle. Molding is completed. Therefore, a mold having a complicated structure is not required, and it can be manufactured at a low cost and with a simple operation.

[0020]

According to the present invention (Claim 1), the fender applied to a floating structure such as a floating pier or a cage can be obtained by spirally winding an elastically deformable elastic material such as rubber around the frame of the floating structure. Since it is rotated, it is less bulky than conventional fenders such as tires, is lightweight, is easy to install, and can be easily installed. In addition, even if the fender is small in scale, its fender function can be fully exerted as before, and because of its elastic force, a tightening force is generated after winding, and a separate rope, etc. is fixed. It can be attached to the frame by itself without any means, and can be securely fixed. Further, since the winding pitch can be changed by the elastic deformation force to be mounted on the frame, it is convenient that the frame can be easily wound even if the frame has a complicated shape and any sectional shape.

According to the present invention (claim 2), the fender made of an elastic material is a solid body formed in a rectangular parallelepiped having a flat cross section, so that the flat surface comes into contact with the frame. In addition to the stable fixing, especially when the frame has a cylindrical shape, the contact area is increased and the fixing force of the fender is increased, so that the fender can be mounted more reliably.

In the present invention (Claim 3), by using the fender of hollow body having a hollow cross-section with a hollow interior, the weight can be further reduced and the handleability can be improved.
Due to the hollow inside, the elasticity increases and the cushioning effect increases, so that a high fender effect can be obtained, the life of the floating structure can be extended, and the operation cost can be reduced. Become.

According to the present invention (claim 4), the fender is a long unvulcanized rubber formed by extrusion molding, which is spirally wound around a metal columnar body, which is placed in a vulcanization kettle and heated. Since it can be manufactured by doing so, a mold having a complicated structure is not required, and the fender can be manufactured at low cost and by a simple operation.

[Brief description of drawings]

FIG. 1 is a partial structural perspective view of a floating structure equipped with a fender according to the present invention.

2A and 2B are a perspective view of a main part showing a manner of mounting a fender structure to a frame of a floating structure, and FIG. 2B is a view showing a cross-sectional shape of the fender.

FIG. 3 is a perspective view of essential parts showing that the fender can be mounted by adjusting the winding pitch.

FIG. 4 is a perspective view of a main part showing an example of mounting a fender having a hollow inside (FIG. A), and a view showing a sectional shape of the fender (FIG. B).

FIG. 5 is a perspective view of essential parts showing an example in which a fender is attached to a floating structure effectively to prevent wear and damage of its float and frame.

FIG. 6 is a diagram schematically showing a method for manufacturing a spiral fender according to the present invention.

[Explanation of symbols]

1 frame 2 cage 3 floats 4 Connection fixing member 6,6B fender 7 Unvulcanized rubber 8 metal columns

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Toshinori Kihara             No.8 Yokomachi Shinmachi, Nishi-ku, Hiroshima-shi, Hiroshima             Company Morten (72) Inventor Hideki Yamashita             No.8 Yokomachi Shinmachi, Nishi-ku, Hiroshima-shi, Hiroshima             Company Morten F-term (reference) 2B104 CA01 CC02 CG07                 2D059 BB11

Claims (4)

[Claims] 1. A fender for a floating structure on which a ship is moored, comprising at least a float and a columnar frame for connecting and fixing the float, the fender being made of an elastically deformable elastic material and wound around the frame. A fender for a floating structure, characterized by being formed in a rotatable spiral shape. 2. A fender for a floating structure, characterized in that the fender is made of a solid material and is formed into a rectangular parallelepiped having a flat cross section. 3. The fender for a floating structure according to claim 1, wherein the fender is a hollow tube having a circular cross section. 4. A fender for a floating structure according to claim 1, wherein the elongated unvulcanized rubber is spirally wound around a metal columnar body and then heat-vulcanized. Method.