JPH06113695A - Raft frame for aquaculture - Google Patents

Abstract

PURPOSE:To provide a raft frame for aquaculture, capable of keeping the culture area in a net in nearly circular form to enable efficient utilization of the area, having a high culture utilization ratio and producible at a low cost by mutually connecting plural peripheral members through joint members to form an assembled raft having nearly hexagonal form when viewed from the top. CONSTITUTION:The peripheral member 12 of this raft frame 10 producible at a low cost is composed of an inside member 16 produced by cutting a log such as cedar log to a prescribed length and an outside member 18 produced by cutting a log to a length slightly longer than the length of the inside member. Six peripheral members 12 are assembled by connecting the end parts with a joint member 14 into a nearly hexagonal form when viewed from the top. An upper plate 20 and a lower plate 22 are connected to the upper and lower faces of the joint end parts of the inside members 16 and the outside members 18 and fixed with bolts 24. A culture net 26 is suspended in the hexagonal space to a prescribed depth. Plural raft frames can be connected with each other in honeycomb form without leaving gap to improve the culture utilization ratio of the water surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aquaculture raft frame for aquaculture of fish.

[0002]

2. Description of the Related Art In recent years, due to the expansion of pollution caused by seawater and water pollution of rivers, the coastal fisheries of Japan have gradually decreased their catches, and the coastal fisheries have been significantly deteriorated. Also, in the pelagic and offshore fisheries, the catches are gradually decreasing due to the regulation of economic zones in each country. Therefore, in order to compensate for the decrease in catches under such circumstances, the promotion of the cultivated fishery as a new fishing method is promoted, and for example, the aquaculture raft frame is moored in a floating manner on the surface of coastal seawater. Aquaculture fisheries, in which juvenile high-class fish such as yellowtail and Thailand are released by laying a net inside the frame and then aquaculture for a predetermined period of time and then shipping, are being actively conducted in various places. In this aquaculture raft frame, a rectangular frame made of wood or steel is used to float on the water surface while being supported by a float, and a plurality of these rectangular frames are connected to each other to form aquaculture net inside. The stakeout is widespread.

[0003]

[Problems to be Solved by the Invention] However, since the fish swim circularly in the net of the aquaculture raft frame, the corners of the rectangular aquaculture raft frame become useless sections in which the fish hardly swim. In order to form a circular culture raft frame with no wasted space for fish to swim, it requires a high level of skill to form and connect multiple arc frames, and the production costs due to the leftovers. There was a problem that it was expensive and that when circular aquaculture raft frames were installed in series, there was a wasteful section on the outer periphery, and in any case the utilization rate of aquaculture for the water surface was low and the cost was high. .

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to form a round aquaculture compartment in a net formed by forming a culture raft frame into a substantially hexagonal shape in plan view. Providing an aquaculture raft frame that can be used without waste by maintaining a shape close to that of the above, and that a plurality of aquaculture raft frames can be connected in a honeycomb shape without gaps, which has a high aquaculture utilization rate on the water surface and is inexpensive to manufacture. It is in.

[0005]

In order to achieve the above object, the present invention comprises a plurality of peripheral members 12 connected to each other through a joint member 14 and assembled in a substantially regular hexagonal shape in plan view. It consists of a farm raft frame 10. Further, the plurality of peripheral members 12 may be pivotally connected to each joint member 14. Further, a plurality of aquaculture raft frames 10 may be used so as to be continuously formed in a honeycomb shape. In addition, the peripheral members 1 corresponding to the adjacent sides of the adjacent aquaculture raft frames 10 which are continuously formed in the honeycomb shape.
2 is a set of peripheral members 1 so that they are common to each other.
It may be shared by two. Further, the joint member 14 may have side portions 44 whose peripheral edge portion is radially divided into three equal parts, and the end portion of the peripheral member 12 may be pivotally attached to each side portion.

[0006]

In the aquaculture raft frame of the present invention, six peripheral members of the same length are connected by joint members in a substantially regular hexagonal shape in plan view. This aquaculture raft frame is, for example, fixed with a float on the lower surface, suspended and moored above the sea surface, and an aquaculture net is stretched inside the aquaculture raft. To feed and farm. The fish being cultivated grow while circling in the aquaculture net, but can be migrated in a substantially circular shape along the raft frame of a regular hexagon in plan view,
There is no waste in the inner compartment, and the peripheral members can use straight members, so the manufacturing cost is low. Further, the plurality of peripheral members may be pivotally connected to each joint member. As a result, when the water surface swells due to wind or the like and the aquaculture raft frame sways, the peripheral members and the joint members move freely in response to the sway, without applying undue stress to the connecting portion. It is possible to prevent breakage of the connecting portion between the peripheral member and the joint member. Further, the aquaculture raft frame may be formed by continuously connecting the peripheral members formed in a substantially regular hexagonal shape using a plurality of them in a honeycomb shape. In this aquaculture raft frame that is continuously provided, the peripheral members are in close contact with each other and wasteful sections are not formed, and the utilization rate of the water surface can be improved. Further, when a plurality of the aquaculture raft frames are continuously formed in a honeycomb shape, the peripheral members corresponding to the adjacent sides of the aquaculture raft frames are shared by one set of peripheral members so as to be common to each other. Further, as a joint member of the peripheral members gathering in a Y shape, a peripheral member is divided into three parts which are radially symmetrically divided, and the end parts of the peripheral members are pivotally attached to the respective side parts. You may arrange. This allows
Peripheral members and joint members when aquaculture raft frames are connected in a honeycomb shape can be saved and manufacturing costs are low, and even if the aquaculture raft frame sways due to the water surface swelling due to wind, etc., the joint members and peripheral members The connection part with and can move freely, and it can be used for a long period of time while preventing occurrence of breakage or the like in the connection part.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 show a farm raft frame 10 according to an embodiment of the present invention. In the figure, a culture raft frame 10 has six peripheral members 12 arranged in a circular shape, and the ends of the peripheral members 12 that are joined to each other are assembled by a joint member 14 into a substantially regular hexagonal shape in plan view. It is set up. As shown in FIG. 1, each of the peripheral members 12 is composed of an inner member 16 obtained by cutting a log material such as cedar into a predetermined length, and an outer member 18 cut a little longer than the inner member 16. , The joint member 1 is provided at the ends of the inner and outer members 16 and 18.
A plurality of bolt holes for connecting to 4 are vertically opened through. Each of the six inner members 16 of the same length,
Six pieces of each of the outer members 18 having the same length are arranged in a substantially regular hexagon in plan view. About 2 to 3 floats F are fixed to the lower surfaces of the inner and outer members 16 and 18 of the peripheral member 12 to float on the water surface. If thinning materials are used for the inner and outer materials 16 and 18, the manufacturing cost can be saved. The peripheral member 12 may be formed by arranging about 3 to 4 logs in parallel. Further, it is not limited to a log material, and a square material may be used. Although the cost is slightly high, a steel material such as an angle material may be used to arrange them in a hexagonal shape.

As shown in FIGS. 1 and 3, the joint member 14 is
Is made of, for example, a zinc-plated approximately square-shaped lightweight metal plate or a hard synthetic resin plate, and each inner member 16 and outer member 18
Of the upper surface of each of the joining ends of the upper plate and the lower surface
And a bottom plate 22. The upper plate 20 and the lower plate 2
A bolt hole communicating with a bolt hole provided at the ends of the inner member 16 and the outer member 18 is opened in 2 and communicates with the upper plate 20, the inner and outer members 16, 18 and the lower plate 22. The bolts 24 are fixed through the formed bolt holes to assemble the culture raft frame 10 having a substantially regular hexagonal shape. In the embodiment, the aquaculture raft frame 10 is formed such that the outer member 18 of the peripheral member 12 has a length of about 3.5 m and the circumscribed circle has a diameter of about 7.2 m.

As shown in FIGS. 1 and 2, the aquaculture raft frame 10 is fixed with a float F on its lower surface and moored by an appropriate mooring line so as not to move while floating above the water surface. The aquaculture net 26 is suspended to a predetermined depth, and the ends of the aquaculture net 26 are attached to the inner and outer members 16 and 18 of the peripheral member 12.
If fry of high-class fish such as yellowtail and Thailand is released into the inside of the aquaculture net 26 and aquaculture, the fish migrate in the aquaculture net 26 in a nearly circular shape and can use the internal compartment of the aquaculture net 26 without waste. Become.

In addition, instead of fixedly connecting the plurality of peripheral members 12 to the joint member 14, a hinge is provided at the end surface of each joint member 14 to form inner and outer plates 16 of each peripheral member 12.
The ends of 18 may be pivotally connected to the hinge. As a result, when the water surface of the aquaculture raft frame 10 rocks due to wind or the like, the peripheral member 12 and the joint member 14 can freely move in response to the rocking, and an unreasonable force is applied to the connecting portion. Without this, it is possible to prevent breakage of the connecting portion between the peripheral member 12 and the joint member 14.

As shown in FIG. 4, the aquaculture raft frame 10
May be continuously formed in a honeycomb shape by using a plurality of them on the water surface. In this case, in the aquaculture raft frames 10 to be joined, the joint members 14 are connected to each other by the joint plate 30 while the cushion members 28 such as discarded tires of the peripheral members 12 are interposed. And are connected like a honeycomb. Each joint member 14 is, as shown in FIG.
Since the bolts 24 penetrate the upper surface plate 20 to the lower surface plate 22, the bolts 24 of the joint members 14 at the joining positions
It is possible to connect a plurality of aquaculture raft frames 10 while connecting the joint members 14 with each other by a joint plate 30 made of a metal plate, a hard synthetic resin plate or the like. As a result, the aquaculture raft frames 10 joined in a honeycomb shape do not form wasteful compartments due to the mutual outer peripheral surfaces being in close contact with each other, and the water surface can be used as aquaculture compartments without waste, improving the yield per unit area of fish. It will be possible. The outer members 18 may be connected to each other in the joined peripheral members 12 by a joint plate or a connecting cable.

FIGS. 5 and 6 show a joint member 1 of another embodiment.
4a is shown. The joint member 14a includes a frame 32, 32 framed with an angle member, and a frame 32,
A plurality of support members 34 in which 32 are fixed in parallel and U which is detachably engaged with bolt holes provided in each of the frame portions 32, 32.
Shaped bolt 36. In this joint member 14a, each of the shape frames 32, 3 is formed without opening a plurality of bolt holes at the ends of the inner and outer members 16, 18 of the peripheral member 12.
Inner and outer members 16 and 18 are joined to the lower surfaces of both ends of 2, and a plurality of U-shaped bolts 36 are circulated around the inner and outer members 16 and 18, and the U-shaped bolts 36 are locked to the respective frame 32 and 32. Then, the peripheral members 12 can be jointly fixed easily.

Next, FIGS. 7 to 10 show another embodiment of the aquaculture raft frame 10 which is continuously arranged in a honeycomb shape. In this embodiment, the peripheral members corresponding to the sides of the adjacent aquaculture raft frames 10 which are continuously arranged in a honeycomb shape are composed of one peripheral member 12 arranged so as to be common to each other. A joint member 14b is arranged at each inner corner where the three members 12 gather in a Y shape, and each peripheral member 1
The two ends are pivotally attached.

As shown in FIGS. 7 and 8, the peripheral member 12
Has two long side members 38, 38 of the same length made of a log material, a square material, or a steel material.
Is fixed with bolts 40 by sandwiching a cushion material 28 on the inner surface side, and one end portion of an H-shaped connecting member 42 is inserted into the grooves provided at both ends of the long side members 38, 38 so that the bolt 40
It is fixed at. The joint member 14b is made of a steel material, and the side portions 44, 4 are radially symmetrically divided into three parts at the peripheral edge portion.
It is formed by a triangular frame 46 having four and fourty-four, and a pair of hinges 48, 48 is provided on the outer surface of each side portion 44 of the triangular frame 46 so as to project.

A connecting member 42 fixed to an end of the peripheral member 12 is pivotally attached to the hinges 48, 48 of each side portion 44 of the joint member 14b, and the peripheral member 12 is pivotally attached to the joint member 14 in a Y shape. While wearing, a substantially regular hexagonal culture raft frame 10 is continuously installed in a honeycomb shape. These aquaculture raft frames 10 are sequentially assembled on the surface of the water, the floats F are fixed to the lower surface of the peripheral member 12 for floating mooring, and the aquaculture nets 26 are mounted inside the aquaculture raft frames 10 respectively. Reinforcing cords 50 are connected to each joint member 14 in the aquaculture raft frame 10 for reinforcement.

As described above, the aquaculture raft frame 10 is shared by one peripheral member 12 while being pivotally connected to the joint member 14b to be assembled in a honeycomb shape, thereby saving the peripheral member 12 and the joint member 14b. It is possible to manufacture at low cost, and even if each aquaculture raft frame 10 swings due to the water surface swelling due to wind or the like, the joint portion between the joint member 14b and the peripheral member 12 can freely move and the joint portion is broken or the like. It can be used for a long period of time while preventing the occurrence of.

[0017]

As described above, according to the aquaculture raft frame of the first aspect, the plurality of peripheral members are connected to each other through the joint members and are assembled in a substantially regular hexagonal shape in plan view. As a result, the aquaculture compartment in the net stretched inside can be maintained in a shape close to a circle and can be used without wasting compartments for swimming fish, and multiple aquaculture raft frames can be connected in a honeycomb shape without gaps High utilization rate for aquaculture and low manufacturing cost.

According to a second aspect of the present invention, since the plurality of peripheral members are pivotally connected to each joint member, the joint member and the periphery thereof can be formed even if the water surface swells and the aquaculture raft frame swings. It is possible to prevent breakage or the like of the connecting portion while freely moving with the member.

Further, according to claim 3, the plurality of aquaculture raft frames are continuously formed in a honeycomb shape so that the aquaculture raft frames can be connected to each other without a gap, and the aquaculture utilization ratio to the water surface can be obtained. Can be increased.

According to a fourth aspect of the present invention, the peripheral members corresponding to the adjacent sides of the adjacent aquaculture raft frames that are continuously formed in a honeycomb shape are provided with a set of peripheral members so that they are common to each other. Since it is commonly used, the material cost of peripheral members and joint members when a large number of aquaculture cages are continuously arranged can be saved.

According to a fifth aspect of the present invention, the joint member has a side portion whose peripheral portion is radially symmetrically divided into three parts,
Since the end portions of the peripheral members are pivotally attached to the respective side portions, the joint member and the peripheral members are free to move even if the water surface swells due to wind or the like in the aquaculture raft frame continuously connected in a honeycomb shape. However, breakage of the connecting portion can be prevented.

[Brief description of drawings]

FIG. 1 is a plan view of an aquaculture cage frame according to an embodiment of the present invention.

FIG. 2 is a view taken along the line AA of FIG.

FIG. 3 is an enlarged view taken along the line BB of FIG.

FIG. 4 is a plan view in which a plurality of aquaculture cages are continuously arranged in a honeycomb shape.

FIG. 5 is an enlarged bottom view showing another joint member.

6 is a view taken along the line CC of FIG.

FIG. 7 is a partial plan view of a case where aquaculture cages are continuously arranged in a honeycomb shape while sharing peripheral members and joint members.

FIG. 8 is an enlarged plan view of a joint member used when aquaculture cages are continuously arranged in a honeycomb shape while sharing peripheral members and joint members.

9 is a view taken along the line DD of FIG.

10 is a view taken along the line EE of FIG.

[Explanation of sign]

 10 Aqua Raft Frame 12 Peripheral Member 14 Joint Member 26 Aquaculture Net 44 Side F Float

Claims (5)

[Claims] 1. A culture raft frame formed by connecting a plurality of peripheral members to each other via a joint member and assembling them in a substantially regular hexagonal shape in plan view. 2. The aquaculture raft frame according to claim 1, wherein the plurality of peripheral members are pivotally connected to each joint member. 3. The aquaculture raft frame according to claim 1, wherein a plurality of the aquaculture raft frames are continuously formed in a honeycomb shape. 4. The peripheral members corresponding to the adjacent sides of the adjacent aquaculture raft frames formed continuously in the honeycomb shape are shared by a set of peripheral members so as to be common to each other. Aquaculture raft frame described in 3. 5. The joint member according to claim 3, wherein a peripheral portion of the joint member has side portions that are radially symmetrically divided into three parts, and an end portion of the peripheral member is pivotally attached to each side portion. Aquaculture raft frame described.