JPH088608Y2 - Frame connection part of cage for marine aquaculture - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cage for aquaculture of fish that is hard to be damaged even in the open sea where the force of waves acts greatly.

[0002]

2. Description of the Related Art In a cage where a fish is cultivated in a natural state by hanging a fence net that divides a playground area on a frame that floats on the ocean, a structure that can withstand the force of waves in bad weather and is not damaged For this reason, conventionally, as shown in FIG. 3, the outer frame A, which is a floating body, has a polygonal integral structure in which a frame member B made of a steel pipe or thick wood is fixed at a connecting portion C. It is common.

[0003]

In the conventional fixed cage of the outer frame constructed as described above, the outer frame A of the raft type which floats between the waves corresponds to the large swell of the waves in the stormy weather. Therefore, the frame member is easily damaged, and depending on the wave condition, the weight of the cage and the wave load are particularly strongly concentrated on the connecting portion C and are likely to be damaged, resulting in a polygonal shape as shown in FIG. Can not be maintained and will be totally damaged.

That is, in the conventional cage, the outer frame A does not vertically rise and fall in parallel with the ups and downs of the wave swell, but rather floats on the wave front in a complicated state of ridges and valleys. When each frame member B is deformed in a complicated manner in a state of being separated from each other, and particularly when a part of the frame member B is left on the wave surface of the rising mountain, the adjacent frame member B falls to the ridge of the undulation with the wave. The problem is that the weight of the surrounding net, which also includes the weight of seawater containing fish, causes a large and complicated twisting action to be repeated over the entire outer frame A, resulting in damage to the connecting portion C of the frame member. Had.

Therefore, a strong material such as steel or thick wood is required for the material of the frame member B in order to maintain the integral structure of the frame and prevent damage. Especially, in the case of steel, the connecting portion C is made strong so that it is perfect. Welding is required and it becomes a large and expensive heavy object, but it is still inevitable to break.

Further, even when the connecting portion has a flexible structure, it is necessary to use a retaining rod or other extra member also serving as a reinforcement in order to maintain the overall polygonal shape, and a large number of floats are required to create buoyancy. It becomes quite expensive.

In the present invention, the frame member may be made of synthetic resin and is light in weight, and it does not need to float if it is an extra member for retaining the shape or a small size for buoyancy. Even if it is a large size, it is lighter than the steel cage. It can flexibly respond to the force of waves and rocks and is hardly damaged, and can provide a cage for the open sea at an extremely low cost.

[0008]

Means for Solving the Problems The present invention provides a frame member of a polygonal or circular frame for hanging an enclosure net, a hollow pipe made of a lightweight synthetic resin or a similar material, or urethane foam or the like inside. The tubular body enclosing the foam body is used, and the polygonal connecting portion formed by a large number of frame members has a flexible structure that does not require a shape-retaining material. Therefore, the end portions of each frame member to be the connecting portion are fixed. A connecting fan-shaped plate in which the connecting member is an L-shaped plate made of a set of two metal or similar materials, and a connecting fan-shaped plate bent at a right angle is formed on the fixed plate to which the frame member of the hollow tube is fixed. One end of each of them is abutted against each other with an angle of a size as necessary with a slight distance between the side edges, and elastic strips of rubber or the like are spliced at the joints, and both sides of the strip are connected to the connection fan-shaped plates. Characterized by a structure in which several bolts, etc., are fixed through Than it is.

[0009]

In the present invention, the connecting portion for connecting a large number of frame members in a polygonal shape or a circular shape is formed by abutting L-shaped plate bodies made of metal such as iron or the like and joining them with elastic strips. Therefore, the elastic force of the elastic band plate of the connecting portion flexibly responds to the movements of the frame members that move up and down intricately in response to the fluctuation of the wavefront, thereby alleviating the impact.

That is, when adjacent frame members oscillate vertically in parallel with each other due to the action of waves, the fluctuation of the polygon in the circumferential direction is caused by the L-shaped plate member fixed to the end of each frame member. The elastic strips provided at the joints of the abutting gaps of the connecting sector plates are bent up and down to form a flexible connecting portion, which disperses the wave force directly acting on the frame member.

In the case where adjacent frame members cross each other back and forth and oscillate vertically due to the operation of a complicated wave, that is, in the case of a swing in the direction of the center of the polygon, the elastic strips of the seam are of the plate-like body. It acts to straighten the connecting fan-shaped plates made of metal or a similar material fixed to both sides in parallel to each other, and flexibly holds the polygonal shape of the entire frame to prevent damage.

Therefore, the frame member does not need a tough material as in the prior art, and may be a lightweight member such as a synthetic resin such as vinyl chloride or a similar material, and may be a lightweight material composed of a hollow tube into which air can enter. Encapsulation of air makes it possible to maintain sufficient buoyancy, and in the case of a small size, it is not particularly necessary to float to give buoyancy. Further, the polygonal shape of the entire frame is always held by a plate-shaped elastic strip plate, and there is no need for a die-holding member for keeping the polygonal shape, which is extremely economical to manufacture.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the structure of the present invention, when the connecting portion of the frame member is made to have a flexible structure, it has sufficient flexibility and can withstand the force of waves and maintain the polygonal shape of the frame body without requiring other members. The frame member is a hollow tube made of synthetic resin or similar material that is lightweight and small, but it does not float, but sufficient buoyancy can be obtained, and even if it is large, it floats by the amount measured from the steel cage. It is a cage that is not needed, and a fence 1
The polygonal floating outer frame is a hollow tubular body 2 made of a synthetic resin such as vinyl chloride or a similar material as the frame member on each side of the polygon, and the connecting portion is a pair of Ls.
A flexible structure in which an elastic strip 3 is used for joining the template D, and a connecting fan-shaped plate 4 obtained by bending the hollow tube 2 as a frame member to the fixed plate 3 fixed to the outside at a right angle. Formed,
One end of the connecting sector plate 4 has an angle corresponding to the number of polygonal corners. Then, the side edges of the adjacent connection fan-shaped plates 4 are butted to each other with a little space left between them, and elastic band plates 5 made of rubber or the like are spliced to the joints, and both sides of the connection fan-shaped plates 4 are connected to each other with a contact metal 6. The plate 5 is fixed to the plate 5 with several bolts 7. If necessary, a foam body such as urethane foam may be enclosed in the hollow tube, and the bolt may be a tack or other fastening member. In the case of a large size, as shown in FIG. 4, the elastic strip plate 5 may be separated and affixed to the upper side with a plurality of pad plates 6 and fixed by bolts.

The present invention does not have to be a fixed type in which the connecting portions of the frame members of the frame body that hangs down the surrounding net 1 are fixed by welding or a shape retention material, and can be made flexible with the connection fan-shaped plate 4 made of a strong metal such as iron. Regardless of which, the frame member is a connecting portion composed of an elastic strip 5 which is strong against the front-rear twisting force, and the frame member is a synthetic resin or a similar material, which is a lightweight hollow tubular body 2 or a foam of urethane foam or the like. It can be a tubular body that encloses the body,
The entire frame is lightweight and does not easily break without the need for extra members, and the frame itself is a buoyant body that floats in the waves as a buoyancy body and hangs down as a cage. The fish can be cultivated by swimming in the fence net.

One acute angle inside the polygonal shape of the connecting sector plate 4 determines its size according to the size of the polygonal shape, and the larger the number of angles, the smaller the angle.

[0016]

[Effects of the Invention] The present invention can flexibly cope with the movement of waves without fixing the connecting portion of each frame member of the polygonal frame body that hangs the cage net of the cage floating on the sea by welding or fixing the shape retention material. In making a flexible structure, the connection fan-shaped plates of the L-shaped plate made of metal or similar material are butted, and the elastic strips are fixed at the joints, so that it can be moved up and down by complicated movement of waves. The destructive force due to the action of torsion is absorbed by the L-shaped plate body and can be corrected so that the polygonal shape formed by the frame member is always kept flat, and the frame member is almost free from damage and the frame member is made of synthetic resin or a similar material. However, since it can be configured as a hollow tube that can also enclose vinyl chloride air or a tube that encloses a foam, it is lightweight and is not easily damaged, and it has the effect of being economical and extremely cheap to produce as a cage with sufficient buoyancy. .

[Brief description of drawings]

FIG. 1 is a perspective view of a connection part of the present invention.

FIG. 2 is an overall perspective view of the present invention.

FIG. 3 is an explanatory view of a conventional cage.

FIG. 4 is a perspective view of an example.

[Explanation of symbols]

 1 Enclosure 2 Hollow tube 3 Fixing plate 4 Connection fan-shaped plate 5 Elastic band plate 6 Pad 7 Bolt

Claims (1)

[Scope of utility model registration request] 1. A frame member of a cage in which a frame body with a hanging net is floated in the ocean to cultivate fish is formed into a polygonal or circular shape composed of a large number of frame members and a connecting portion of a flexible structure. Is a hollow tube made of synthetic resin or similar material, and the connecting part has a butt structure of L-shaped plate fixed to each hollow tube, and the hollow tube is bent at a right angle to the fixed plate. Frames of cages for marine aquaculture that are formed by abutting the side edges of the connecting fan-shaped plates formed on each other and applying elastic strips to their joints and fixing both sides of the connecting fan-shaped plates to the adjacent connecting fan-shaped plates through a metal plate. Body connection part.