WO2008069040A1

WO2008069040A1 - Fish preserve, and fish preserve manufacturing method

Info

Publication number: WO2008069040A1
Application number: PCT/JP2007/072799
Authority: WO
Inventors: Shunji Sonoda; Seiji Seto
Original assignee: Ashimori Industry Co., Ltd.
Priority date: 2006-12-08
Filing date: 2007-11-27
Publication date: 2008-06-12
Also published as: CL2007003521A1; CA2669265A1; JP2008142003A; AU2007330165A1

Abstract

Provided is a fish preserve which can suppress, in case a portion of net has ruptured for some cause, any further extension of an opening formed by the rupture. The fish preserve includes a bottom net (1), a side net (2) disposed around the bottom net (1), and a frame (3) retaining the upper end (2a) of the side net (2). This side net (2) is constituted by juxtaposing column lines (a) formed of metallic element wires bent in a predetermined shape and by connecting the column lines to each other. The side net (2) is so attached to the bottom net (1) and the frame (3) that the column lines (a) may extend in vertical directions when the fish preserve (100) is disposed.

Description

Specification

Ginger and ginger production method

Technical field

[0001] The present invention relates to ginger and a method for producing ginger.

Background art

[0002] As this type of technology, Patent Document 1 discloses a ginger having a net that is immersed in and brought into contact with seawater when used for culturing fish and the like in the sea. For example, as shown in FIGS. 1, 3 and 4 of Patent Document 1, this ginger net is a so-called rhombus wire mesh (wires bent in a chevron with a constant pitch by a jig are continuously entangled with each other to form a mesh. The wire mesh knitted so as to form a rhombus), and when the net is manufactured, a plurality of strands constituting the net are woven according to certain rules. Therefore, the ginger net has a direction according to a certain rule with a plurality of strands constituting the net.

Patent Document 1: Japanese Patent Laid-Open No. 2001-190178 (paragraph number 0001, FIG. 1, FIG. 3, FIG. 4)

Disclosure of the invention

Problems to be solved by the invention

[0004] As described above, when a net forms a ginger, it has some direction. Conventionally, the size of the ginger used for aquaculture of fish etc. is at most 50m or less at the top outer circumference of the side net X depth 6 ~; about 15m. Therefore, the weight of the whole ginger is light. Therefore, it was possible to construct a ginger regardless of the above directionality. In general, due to the ease of construction, a method called a horizontal net in which the extending direction of the strands of the side net is parallel to the sea surface has been adopted.

When trying to increase the size of a ginger, its weight may be several times that of a conventional ginger. Furthermore, in the environment where fish are cultivated in the sea, the influence of tidal current, wave height and other factors cannot be avoided. In other words, increasing the size of the ginger imposes a great burden on the strands. Furthermore, generally speaking, a material that is a strand has a transverse elastic modulus (deviation elastic modulus) smaller than a longitudinal elastic modulus (Young's modulus), and a shear stress is smaller than a tensile stress. For this reason, the ginger made up of the above horizontal net has its own weight in the tangled part of the side net. As a result, a load force is applied in the shear direction, so that it is easily deformed or broken. Further, when the side net is attached to the frame body, the fixing portion arbitrarily bound is easily deformed or broken by a force or a burden on the increased strands. Furthermore, there is a problem that the fracture opening expands due to its own weight.

In addition, for example, in the case of the above-mentioned horizontal net of the rhombus metal mesh, the side lines of the continuously intertwined side nets are parallel to the sea surface, and there is no binding force between the line lines. Therefore, when an external force from the horizontal direction or the bottom network side is applied to the side network due to the influence of tidal currents, it is easily deformed. There is a problem ^S that the volume in the ginger is reduced.

[0005] The present invention has been made to solve the above problems, and a first object of the present invention is to provide a sacrifice designed to minimize the risk to its own weight. This is to provide a ginger that can suppress the further expansion of the opening caused by the fracture even when a part of the fracture occurs for some reason.

Furthermore, the second purpose is to provide a ginger that can reduce the cost of materials relative to the ginger volume by increasing the size of the ginger.

Furthermore, the third purpose is to provide a ginger that minimizes the decrease in the use environment compared to the volume secured in a stationary state.

Means and effects for solving the problems

[0006] The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

[0007] According to a first aspect of the present invention, a ginger configured as follows is provided. That is, a bottom net, a side net provided around the bottom net, and a frame body that is arranged along the sea surface and that connects the upper end of the side net. The side net is formed by juxtaposing row wires formed by bending metal element wires into a predetermined shape, and linking them to each other. The column lines are attached to the bottom net and the frame so that the extending direction of the column lines is the vertical direction. According to this configuration, even if any one of the plurality of column lines constituting the side network breaks, due to the presence of another column line adjacent to the broken column line, Further expansion of the generated opening can be suppressed. The ginger Since the extending direction of the plurality of column lines in the side network is the vertical direction, the load applied to the strands is in the strand axis direction. In general, the tensile stress, which is greater in the longitudinal elastic modulus (Young's modulus) than the transverse elastic modulus (displacement elastic modulus), is greater than the shear stress in the material that becomes the strand. This can reduce the risk of breakage and deformation due to its own weight. This can increase the size of the ginger with less risk. Since the extending direction of the plurality of row lines is up and down in the side net, the ginger has its own weight when the side net receives an external force such as a tidal current in a horizontal direction with respect to the sea surface. In addition, it tries to stay in its original position due to the bending rigidity of the row lines. Therefore, it has excellent shape retention. Further, since the extending direction of the plurality of row lines is vertical in the side net, the ginger is subjected to an external force such as seawater thrust from the bottom net side. ! /, And the row lines of the side network are subjected to compression. In other words, it works to retain the shape of the ginger by its resistance to compression. Therefore, it has excellent shape retention.

[0008] The above-mentioned ginger is preferably configured as follows. That is, the side net is provided around the bottom net via a spiral connecting member. These side nets, bottom nets, and connecting members are all made of the same metal material. According to this configuration, galvanic corrosion between the bottom mesh or the side mesh and the connecting member can be avoided, and a simple connection of the side mesh to the bottom mesh is realized. .

[0009] The above-mentioned ginger is preferably configured as follows. That is, the bottom net and the side net are made of copper or a copper alloy. According to this material, it can be a ginger that exhibits antifouling and algal control effects due to trace metal action (Oligodynamie).

[0010] The above-mentioned ginger is preferably configured as follows. That is, the upper end of the side net is secured to the frame body via the insulating member. According to this configuration, even if the frame is made of a material different from that of the side net, galvanic corrosion between the side net and the frame is reliably avoided, so that the material of the frame can be freely set. Can be selected.

[0011] The above-mentioned ginger is preferably configured as follows. That is, the length of the outer periphery of the upper end of the side net attached to the frame is 50 m or more. Increasing the size has various advantages. For example, (1) For a typical ginger with a size of 10m x 10m x 8m, the surface area used is 420m ² and the volume is 800m ³ . For example, (2) the size is 24m X 24m X 10m In the case of ginger, the surface area used is 1536 m ² and the volume is 5760 m ³ . Ratio of cages used area to raw bamboo volume (1) 1. to ^{^{90m 3 / m 2, (2}} ) is 3. is 75 m ³ / m ^2. In other words, it leads to reduction of material cost used per ginger volume. For example, when fish are cultivated by increasing the size of the ginger, if the ginger volume is increased, the contact between fishes or nets can be reduced and the stress of the fish can be reduced. This can provide a better aquaculture environment.

[0012] The above-mentioned ginger is preferably configured as follows. In other words, the connecting wire used when the side net is attached to the frame body is provided at least at two locations on the net. According to this structure, it is possible to prevent the upper part of the net from being deformed by its own weight. In addition, the load capacity and fatigue of the net can be reduced and the durability can be improved.

[0013] According to the second aspect of the present invention, a bottom net, a side net provided around the bottom net, and a frame body that is disposed along the sea surface and that connects the upper end of the side net. The production of ginger comprising the above is performed by the following method. That is, the side net is connected to the periphery of the bottom net in a state of being deployed on the inner peripheral side of the frame so as to be flush with the frame, and the upper end of the side net Bending the side net in a direction perpendicular to the inner peripheral edge of the frame body so as to extend along the inner peripheral edge of the frame body. According to this method, the side network can be connected to the frame and the bottom net while maintaining the same state of the frame and the bottom net.

[0014] The production of the above-mentioned ginger is preferably performed by the following method. That is, the method further includes a step of connecting the upper end of the side net to the frame before releasing the flush state of the bottom net with respect to the frame. According to this method, the side net is developed by the action of the weight of the bottom net only by releasing the flush state of the bottom net with respect to the frame.

[0015] The production of the above-mentioned ginger is preferably performed by the following method. That is, it further includes a step of laying a surface member that is flush with the frame body on the inner peripheral side of the frame body. According to this method, the bottom net can be developed on the inner peripheral side of the frame so as to be flush with the frame regardless of the environment of the ginger manufacturing site. That is, the power S is used to make the ginger production site offshore.

[0016] This step is preferably the following step. That is, a plurality of frames are provided on the inner peripheral side of the frame. These wire rods are arranged and bridged, and then, a plurality of other wire rods are arranged and bridged on the inner peripheral side of the frame so as to be orthogonal to the plurality of wire rods. According to this step, since the surface member becomes strong, the surface of the bottom mesh with respect to the frame body when the bottom mesh is deployed on the surface member can be reliably maintained, and the A plurality of other wire rods act as a guide mechanism used for the development of the bottom net.

[0017] The production of the above-mentioned ginger is preferably carried out by the following method. That is, the method further includes a step of providing a levitation member having buoyancy with respect to seawater below the surface member. According to this method, the flush state of the bottom mesh with respect to the frame body is more reliably maintained. Brief Description of Drawings

FIG. 1 is a perspective view showing an installation state of a ginger according to an embodiment of the present invention.

[Figure 2] Partial enlarged view of Figure 1

[Figure 3] Figure similar to Figure 2

[Fig. 4] Explanatory drawing showing a part of the connection between the bottom net and the side net

[Fig.5] A-A line cross-sectional view of Fig. 1

FIG. 6 is a diagram for explaining a state in which the upper end 2a of the side net 2 is locked to the pipe member 3c of the frame 3 by the connecting wire 6.

FIG. 7 is a perspective view of a ginger according to an embodiment of the present invention, showing a first step in the ginger manufacturing process.

[Fig. 8] A diagram showing a part of the second step in the ginger manufacturing process, similar to Fig. 7. [Fig. 9] A diagram showing a part of the second step in the ginger manufacturing process. FIG. 10 is a diagram showing a part of the third step in the ginger manufacturing process, and is a diagram similar to FIG. 7. FIG. 11 is the fourth step in the ginger manufacturing process. FIG. 12 is a view similar to FIG. 7 and FIG. 12 is a view showing a part of the fourth step in the ginger manufacturing process, and is similar to FIG.

[0019] 1 Bottom net

2 side network

2a Top edge

2b Bottom 3 Frame

4 Connecting member

5 Insulating material

a 歹 IJ'fe

BEST MODE FOR CARRYING OUT THE INVENTION

[0020] (In the present specification, "equal plane" means "in the same plane", for example, "B member that is flush with A member" means "directly from A member." "B-members with the same surface as the surface that can be conceived in the" ".

Hereinafter, embodiments of the present invention will be described. FIG. 1 is a perspective view showing an installation state of a ginger according to an embodiment of the present invention.

[0022] <Outline of Ginger 100>

As shown in FIG. 1, in this embodiment, a plurality of ginger 100 is installed in the sea from the viewpoint of productivity. The ginger 100 includes a bottom net 1, a side net 2 that is provided around the bottom net 1, a frame 3 that is disposed along the sea surface and that connects the upper end 2a of the side net 2, and Comprising. A box-shaped (cuboid-shaped) accommodation space is formed by the bottom net 1 and the hanging side net 2, and a predetermined amount of fish and the like are accommodated in the accommodation space. The accommodation space is maintained at a constant distance from the sea surface by adding buoyancy to seawater to the frame 3.

[0023] <Side network 2>

Please refer to FIG. 2, which is a partially enlarged view of FIG. The side net 2 is composed of a plurality of column lines a which are bent and formed in a predetermined shape as shown in FIG. In other words, this side net 2 is configured as a net knitted so that the strands (column lines a) bent in a chevron at a constant pitch by a jig are continuously entangled with each other so that the mesh becomes a rhombus. Yes. In short, the side net 2 is classified as a so-called diamond wire mesh.

[0024] The diameter d of the row line a is 2.0 to 5.0 [mm], and the material thereof is copper or a copper alloy in the present embodiment. The components of the copper alloy are exemplified below.

[0025]-Cu [wt%]: 62. 0—69. 0

• Sn [wt%]: 0.2-2.1.0 • Ni [wt%]: 0.;! ~ 1 · 0

• The balance is Zn (including inevitable impurities)

[0026] Reference is now made to FIG. As shown in the figure, the lower end 2b of the side net 2 is processed into a double knurled type in which the column line a is bent by approximately 180 degrees and tied so as to be entangled with adjacent column lines. The upper end 2a of the side network 2 is similarly processed into a double knuckle type (see Fig. 1).

Then, as shown in FIG. 2, the side net 2 has the bottom net 1 and the frame body so that the extending direction of the plurality of column lines a is vertical when the ginger 100 is installed. Attached to 3

[0028] <Bottom net 1>

In the present embodiment, the bottom net 1 is classified as a so-called rhombus metal net, as with the side net 2. The processing of the end of the bottom mesh 1, the diameter d of the column line a, and the material of the column line a are the same as those of the side network 2.

[0029] <Connection between bottom net 1 and side net 2>

As described above, the side network 2 is provided around the bottom network 1 (see FIG. 1). Refer to Figure 4 here. FIG. 4 is an explanatory diagram showing a part of the connection state between the bottom network and the side network.

As shown in the figure, the side net 2 is connected to the bottom net 1 via a connecting member 4 formed in a spiral shape (coil shape). That is, the side net 2 is connected to the bottom net 1 by the spiral connecting member 4 passing through the net of the side net 2 and the net of the bottom net 1 alternately (one mesh at a time). The side net 2, the bottom net 1, and the connecting member 4 are all made of the same metal material (in the present embodiment, the above-described copper or copper alloy). The spiral connecting member 4 may have a shape that smoothly swirls without a corner, or may have a shape that swirls while including a corner.

[0031] <Frame 3>

Next, the frame 3 will be described with reference to FIG. As described above, the frame 3 has buoyancy with respect to seawater. Specifically, the frame 3 is provided with a plurality of floats (not shown), and the float 3 floats with respect to seawater, so that the frame 3 has buoyancy with respect to seawater. 3 will be placed along the sea surface. In the present embodiment, the material of the frame 3 is iron or an iron alloy, and its size is 24 [m] square.

[0032] The frame 3 plays various roles. The first role is to float the upper end 2a of the side net 2 as described above, thereby increasing the distance from the sea surface of the accommodation space formed by the side net 2 and the bottom net 1. To keep it constant. The second role is to maintain the shape of this containment space. The third role is to provide a scaffold for smoothly performing work related to the ginger 100, such as feeding work for fish accommodated in the accommodation space. And in order to fully fulfill | perform said 3rd role, the said frame 3 is provided with the flat plate (not shown) (refer flat plate 3a: FIG. 5) along the outer periphery.

[0033] <Securing side network 2 to frame 3>

Next, the locking of the upper end 2a of the side network 2 to the frame 3 will be described in detail. In this embodiment, the upper end 2a of the side net 2 is connected to the frame 3 via an insulating member 5.

[0034] Reference is now made to FIG. FIG. 5 is a cross-sectional view taken along line AA in FIG. As shown in the figure, the frame 3 is fixed in order from the outer peripheral side to the inner peripheral side with respect to the flat plate 3a, the frame main body 3b, and the frame main body 3b via a bridge member 3d. Further, a force is formed with a pipe member 3c having a predetermined diameter for making it easy to lock the upper end 2a of the side net 2 to the frame 3. In other words, a metal pipe member 3 c is provided on the inner peripheral side of the frame 3. An insulating member 5 made of a resin such as vinyl chloride, polyethylene, polypropylene, or polyester and having a thickness of 2 to 5 [mm] is wound on the outer peripheral surface of the pipe member 3c. In order to facilitate winding of the insulating member 5 around the outer peripheral surface of the pipe member 3c, a slit (not shown) is formed in the insulating member 5.

[0035] The upper end 2a of the side net 2 is connected to the frame body 3 via the insulating member 5 described above, and a connecting wire 6 as a wire made of the same material as the material of the side net 2 is used. It is locked. That is, the connecting wire 6 is provided with a knot (not shown), passes through the inside of the side net 2 and circulates around the outer periphery of the insulating member 5. Accordingly, the upper end 2a of the side net 2 includes the anchoring wire 6 that penetrates the mesh of the side net 2, the insulating member 5 around which the anchoring wire 6 circulates, and the insulating member 5 on the outer peripheral surface. The pipe member 3c to be wound, in order Via the frame body 3b.

In this embodiment, the end of the side net 2 is connected to the end of the side net 2 (the upper end 2a side shown in FIG. 5 and the lower end 2b side shown in FIG. 3). Reinforcing wire 7 as a wire for aligning in a straight line is penetrated. The reinforcing spring material 7 penetrating the end portion on the upper end 2a side of the side net 2 is arranged on the inner peripheral side of the anchoring spring material 6, while the end on the lower end 2b side of the side net 2 is provided. The reinforcing wire 7 penetrating the part is arranged on the inner peripheral side of the connecting member 4 shown in FIG.

[0037] Next, a method for manufacturing the above-described ginger 100 will be described. Here, it is assumed that the frame 3 having the above-described float is already arranged along the sea surface.

[0038] <First step: Installation of levitation member 10>

This step is a step of providing a levitation member 10 having buoyancy with respect to seawater. See Figure 7. FIG. 7 is a perspective view of a ginger according to an embodiment of the present invention, and is a diagram showing a first step in the ginger manufacturing process. The levitation member 10 is made of, for example, a floatable resin float, and is arranged at the substantially center on the inner peripheral side of the frame 3.

[0039] <Second step: laying of face member 9>

This step is a step of laying a surface member that is flush with the frame 3 on the inner peripheral side of the frame 3. Specifically, it is as follows.

[0040] See FIG. FIG. 8 is a view showing a part of the second step in the manufacturing process of ginger and is similar to FIG. As shown in this figure, first, a plurality of bridge wires 8a are arranged side by side on the inner peripheral side of the frame 3 and bridged.

[0041] The material of the bridge wire 8a is iron or an iron alloy, and its diameter is 2 to 4 [mm]. A plurality of bridge wires 8a are arranged in parallel on the inner peripheral side of the frame 3 at a predetermined interval (for example, 50 [cm]). At this time, each end of the bridge wire 8a is locked to the pipe member 3c described above. In other words, each of the bridge wires 8a is bridged between a pair of pipe members 3c and 3c facing each other. The method of securing the bridge wire 8a to the pipe member 3c may be any method that can give appropriate tension. At this time, the bridge wire 8a is bridged so as to be on the upper side of the floating member 10.

[0042] Reference is now made to FIG. FIG. 9 is a diagram showing a part of the second step in the ginger manufacturing process, which is similar to FIG. As described above, a plurality of bridges are provided on the inner peripheral side of the frame 3. After the wires 8a are lined up and bridged, as shown in this figure, the other bridge wires 8b (on the upper side of the bridge wires 8a) are placed on the inner peripheral side of the frame 3 so as to be orthogonal to these bridge wires 8a. Multiple bridges are arranged side by side.

[0043] The material, diameter, distance, and method of locking the pipe member 3c to the bridge wire 8b are the same as those of the bridge wire 8a.

[0044] In this way, the plurality of bridge wires 8a and the plurality of bridge wires 8b are bridged on the inner peripheral side of the frame 3 so as to be orthogonal to each other. A surface member 9 that will be flush with each other will be laid. In addition, the surface member 9 is strongly supported by both the frame body 3 having buoyancy with respect to seawater and the levitation member 10 as described above, so that the surface member 9 is separated from the sea surface by a predetermined distance. Is done.

[0045] <Third step: Laying the bottom net 1>

This step is a step of developing the bottom net 1 on the inner peripheral side of the frame 3 so as to be flush with the frame 3. In other words, it is a step of developing the bottom net 1 on the surface member 9 that is flush with the frame 3. Specifically, it is as follows.

[0046] Reference is now made to FIG. FIG. 10 is a diagram showing a part of the third step in the ginger manufacturing process, which is similar to FIG. The bottom mesh 1 is predetermined in a direction parallel to the extending direction D1 of the column line a constituting the bottom mesh 1 as shown in FIG. It is divided into a number of nets la 'la' · · ·. These nets 1 a ′ la— are conveyed to the inner peripheral side of the frame body 3 along the extending direction of the bridge wire 8b constituting the surface member 9. At this time, since the bridge wire 8b is arranged on the upper side of the bridge wire 8a, the bridge wire 8b is used for transporting the mesh la'la '... to the inner peripheral side of the frame 3. As a guide mechanism, it is possible to smoothly transport these nets la 'la'.

[0047] Next, these nets la'la '... conveyed to the inner peripheral side of the frame 3 are developed in the extending direction D2 of the bridge wire 8b, and the end portions of the adjacent nets la'la are expanded. (Ends in the unfolding direction) Connect the two together. Accordingly, the bottom net 1 is developed on the inner peripheral side of the frame 3 so as to be flush with the frame 3. The ends of adjacent meshes la 'la''' may be connected to each other by stitching using a separately prepared column line a! /, And other known connection methods Can be linked together!

[0048] <Fourth process: Connection of side network 2 to bottom network 1>

In this step, the side net 2 is annularly connected to the peripheral edge of the bottom net 1 in a state of being developed on the inner peripheral side of the frame 3 so as to be flush with the frame 3. In this step, the side net 2 is bent in a direction perpendicular to the inner peripheral edge of the frame 3 so that the upper end 2 a of the side net 2 is along the inner peripheral edge of the frame 3. Specifically, it is as follows.

[0049] Reference is now made to FIG. FIG. 11 is a view showing a part of the fourth step in the manufacturing process of ginger and is similar to FIG. In this figure, a thick arrow means the extending direction of the column line a.

[0050] As shown in FIG. 1, the side net 2 is formed in an annular shape when the ginger 100 is installed. However, in consideration of the workability of assembling the ginger 100, the side net 2 is divided into a large number in the direction orthogonal to the extending direction of the column line a, and is rolled up into a spiral shape. Transport to the inner periphery of body 3.

[0051] Then, when the side net 2 that has been divided and wound into a spiral shape is installed, the extending direction of the plurality of column lines a constituting the side net 2 when the ginger 100 is installed is in the vertical direction. Then, unfold and place on the bottom mesh 1. At this time, the lower end 2b of the side net 2 in a divided state is set along the periphery of the bottom net 1. Then, the side nets 2 in a divided state are stitched together to form the side nets 2 on the bottom net 1 in an annular shape. Fig. 11 shows a state in which the side network 2 to be formed in a ring shape is completed for half a circle instead of one.

[0052] Next, the reinforcing wire 7 is penetrated through the end portions of the side net 2 formed in an annular shape on the bottom net 1 on the upper end 2a side and the lower end 2b side as described above (see FIG. 5 together). See).

Next, the side net 2 is connected to the periphery of the bottom net 1. For this connection, the connecting member 4 formed in a spiral shape as described above is used. At this time, it should be noted that the reinforcing wire 7 penetrating the end of the side net 2 on the lower end 2b side is arranged on the inner peripheral side of the connecting member 4.

[0054] Reference is now made to FIG. FIG. 12 is a view showing a part of the fourth step in the manufacturing process of ginger and is similar to FIG. After the side net 2 is connected to the periphery of the bottom net 1 in a ring shape, the upper end 2a of the side net 2 is the inner peripheral edge of the frame 3 as shown in the figure. The side net 2 is bent in a direction D3 (illustrated by a thick arrow in the figure) perpendicular to the inner peripheral edge of the frame 3 so as to extend along the line. Specifically, it is as follows.

That is, the upper end 2a of the side net 2 located near the center of the frame 3 in the state shown in FIG. 11 is the inner peripheral edge of the frame 3 (in this embodiment, the pipe member 3c). The side network 2 is folded back in the direction D3 shown in FIG.

[0056] <Fifth step: Securing side network 2 to frame 3>

This step is a step of securing the upper end 2a of the side net 2 to the frame 3 before releasing the flush state of the bottom net 1 with respect to the frame 3.

[0057] Please refer to FIG. 5 showing a state where the upper end 2a of the side network 2 is locked to the frame 3.

As shown in the figure, the upper end 2a of the side net 2 is secured to the pipe member 3c of the frame 3 using the aforementioned securing wire 6. At this time, since the insulating member 5 is interposed between the connecting wire 6 and the pipe member 3c, the connecting wire 6 and the pipe member 3c are electrically insulated from each other. .

[0058] <Sixth step: release of flush state of bottom net 1 relative to frame 3>

This step is a step of releasing the flush state of the bottom net 1 with respect to the frame 3. That is, the floating member 10 shown in FIG. 7 is removed, and the bridge wire 8a and the bridge wire 8b bridged on the inner peripheral side of the frame 3 are gradually thinned out as shown in FIG. The bottom net 1 is gradually submerged into the sea by its own weight, thereby releasing the flush state of the bottom net 1 with respect to the frame 3. As a result, the side net 2 in the bent state as shown in FIG. 12 is developed in the vertical direction and shifts to the state shown in FIG. 1, whereby the production of the sacrifice 100 is completed.

As described above, in this embodiment, the ginger 100 is configured as follows. That is, a bottom net 1, a side net 2 provided around the bottom net 1, and a frame 3 arranged along the sea surface and connecting the upper end 2 a of the side net 2 are provided. The side net 2 is configured by arranging row lines a formed by bending metal strands into a predetermined shape and linking them together. The side net 2 is attached to the bottom net 1 and the frame 3 so that the extending direction of the plurality of row lines a is the vertical direction when the ginger 100 is installed. According to this configuration, even if any one of the plurality of column lines a constituting the side network 2 is broken, this broken line Due to the presence of another column line a adjacent to the column line a, further expansion of the opening caused by the breakage can be suppressed. Further, according to this configuration, the self-weight of the bottom mesh 1 acts to make the column line a of the side network 2 straight, for example, the column line a so as to extend in the horizontal direction. Compared with the case where the weight of the bottom net 1 acts so that the column line a of the side net 2 is further bent, it can be said that it is extremely advantageous in terms of strength. In the ginger 100, since the extending direction of the plurality of column lines a in the side network 2 is the vertical direction, the load applied to the strands is in the strand axis direction. In general, the tensile stress, which is greater in the longitudinal elastic modulus (Young's modulus) than the transverse elastic modulus (shear elastic modulus), is greater than the shear stress in the material that becomes the strand. As a result, the risk of breakage and deformation due to its own weight can be suppressed. This makes it possible to increase the size of the sacrifice 100 with less risk. In the ginger 100, since the extending direction of the plurality of row lines a is upward and downward in the side network 2, the side network 2 was subjected to an external force such as a tidal current in a horizontal direction with respect to the sea surface. In some cases, in addition to its own weight, it tries to remain in its original position due to the bending rigidity of the row line a. Therefore, it has excellent shape retention. Furthermore, since the extending direction of the plurality of column lines a in the side net 2 is the vertical direction, the ginger 100 has an external force such as pushing up seawater from the bottom net 1 side. In this case, the side line 2 of the side network 2 receives a compression force. In other words, it works to keep the ginger 100 shaped by the resistance to compression. Therefore, it has excellent shape retention.

[0060] The above-described ginger 100 is further configured as follows. That is, the side net 2 is provided around the bottom net 1 via a connecting member 4 having a spiral shape. These side net 2, bottom net 1, and connecting member 4 are all made of the same metal material. According to this configuration, galvanic corrosion between the bottom net 1 or the side net 2 and the connecting member 4 can be avoided, and the side net 2 with respect to the bottom net 1 can be simplified. Concatenation is realized. Furthermore, according to this configuration, relative rotation of the side net 2 with respect to the bottom net 1 is allowed.

[0061] The above-described ginger 100 is further configured as follows. That is, the bottom net 1 and the side net 2 are made of copper or a copper alloy. According to this material, it can be a ginger that exhibits an antifouling effect and an algae-proof effect by a trace metal action (Oligodynamie). Furthermore, according to these antifouling and algal control effects, the mesh of the side net 2 is not blocked. It is said that the labor required for cleaning is reduced, (2) seawater containing enough oxygen is reliably supplied into the ginger 100, and (3) the burden on the environment due to accumulation of algae and shellfish can be reduced (1) The extremely advantageous effects described in (3) are exhibited.

[0062] The above-described ginger 100 is further configured as follows. That is, the upper end 2a of the side net 2 is secured to the frame 3 via the insulating member 5. According to this configuration, even if the frame 3 is made of a material different from that of the side net 2, galvanic corrosion between the side net 2 and the frame 3 can be reliably avoided. Body 3 material can be freely selected

[0063] The above-described ginger 100 is further configured as follows. That is, the length of the outer periphery of the upper end of the side net 2 attached to the frame 3 is 50 m or more. According to this configuration, an increase in size has various advantages. For example, (1) For a typical ginger with a size of 10m x 10m x 8m, the surface area used is 420m ² and the volume is 800m ³ . For example, (2) If the size is 24 m x 24 m x 10 m, the surface area used is 1536 m ² and the volume is 5760 m ³ . Ratio of cages used area to preserve volume (1) 1. to ^{90m 3 / m 2, (2} ) is ³ · 75m 3 / m ^2. In other words, this leads to a reduction in material costs used per ginger volume. By increasing the size of the ginger 100, for example, when fish is cultivated, if the ginger volume is increased, the contact between fishes or nets can be reduced and the stress on the fish can be reduced. Thereby, a better aquaculture environment can be provided.

[0064] The above-mentioned ginger 100 is further configured as follows. That is, the connecting wire 6 used when the side net 2 is attached to the frame 3 is provided at least at one location of the net. According to this structure, it is possible to prevent the upper part of the net from being deformed by the weight of the net. In addition, the load resistance and fatigue resistance of the net can be reduced and the durability can be improved.

As described above, in the above embodiment, the bottom network 1, the side network 2 provided around the bottom network 1, and the upper end 2 a of the side network 2 are arranged along the sea surface. The ginger 100 provided with the frame 3 to be stopped is manufactured by the following method. That is, the side net 2 is annularly connected to the peripheral edge of the bottom net 1 in a state of being expanded on the inner peripheral side of the frame 3 so as to be flush with the frame 3. The upper end 2a of the side net 2 is along the inner periphery of the frame 3 A step of bending the side net 2 in a direction orthogonal to the inner peripheral edge of the frame 3. According to this method, the side network 2 can be connected to the frame 3 and the bottom net 1 while maintaining the flush state of the frame 3 and the bottom net 1.

[0066] The production of the above-described ginger 100 is further performed by the following method. That is, it further includes a step of locking the upper end 2a of the side net 2 to the frame 3 before releasing the flush state of the bottom net 1 with respect to the frame 3. According to this method, the side net 2 is developed by the action of its own weight only by releasing the flush state of the bottom net 1 with respect to the frame 3.

[0067] Production of the above-described ginger 100 is further performed by the following method. That is, it further includes a step of laying a surface member 9 that is flush with the frame 3 on the inner peripheral side of the frame 3. According to this method, the bottom net 1 can be deployed on the inner peripheral side of the frame 3 so as to be flush with the frame 3 regardless of the environment of the manufacturing site of the ginger 100. That is, the production site of the ginger 100 can be offshore.

[0068] This step is specifically the following step. That is, a plurality of wire rods (bridge wire rods 8a) are arranged and bridged on the inner peripheral side of the frame body 3, and then a plurality of other wire rods (bridge wire rods 8b) are connected to the inner peripheral side of the frame body 3 This is a process of bridges arranged side by side perpendicular to the wire (bridge wire 8a). According to this step, since the surface member 9 becomes strong, it is ensured that the bottom mesh 1 is flush with the frame 3 when the bottom mesh 1 is spread on the surface member 9. And a plurality of the other wire rods (bridge wire rods 8b) act as a guide mechanism that is used for unfolding the bottom mesh 1.

[0069] The production of the above-mentioned ginger 100 is further performed by the following method. That is, the method further includes a step of providing a levitation member 10 having buoyancy with respect to seawater below the surface member 9. According to this method, the flush state of the bottom net 1 with respect to the frame 3 is more reliably maintained.

[0070] Although the preferred embodiments of the present invention have been described above, the above embodiments can be modified and implemented as follows.

[0071] That is, for example, in the above embodiment, the ginger 100 is a force that is manufactured at sea. When manufacturing this ginger 100 on land, the process using the above-mentioned face member 9 and levitation member 10 is not an essential process. Made on land The produced ginger 100 may be lifted and transported to a predetermined place using a heavy machine such as a crane.

[0072] ♦ The material of the bottom net 1 and the side net 2 is a force S made of copper or a copper alloy. Alternatively, other metals such as iron or an iron alloy may be used instead.

[0073] ♦ Frame 3 is made of, for example, polyethylene, polypropylene, polyester, nylon, FR

Resin such as P may be used.

♦ The extending direction of the column line a constituting the bottom net 1 is not particularly limited.

[0075] ♦ From the viewpoint of smooth production of the ginger 100, it is preferable that the bottom net 2 is secured to the bottom net 1 by appropriate temporary fixing! /.

Claims

The scope of the claims

[1] Bottom net,

A side network installed around the bottom network;

A frame that is arranged along the sea surface and that locks the upper end of the side net;

A ginger with

The side nets are formed by juxtaposing row lines formed by bending metal element wires into a predetermined shape and interconnecting them.

The side net is attached to the bottom net and the frame so that the extending direction of the plurality of row lines is in the vertical direction when the ginger is installed.

Ginger characterized by

[2] The side net is provided around the bottom net via a spiral connecting member,

These side nets, bottom nets, and connecting members are all made of the same metal material.

The ginger of claim 1

[3] The bottom net and the side net are made of copper or a copper alloy.

Ginger according to claim 1 or 2, characterized in that

[4] The upper end of the side net is secured to the frame body via an insulating member.

The ginger according to any one of claims 1 to 3, wherein

[5] The length of the outer periphery of the upper end of the side net attached to the frame is 50 m or more.

The ginger according to any one of claims 1 to 4, wherein

[6] The connecting wire used when the side net is attached to the frame is provided at least at one position on two meshes.

Ginger according to any one of claims 1 to 5, characterized in that

[7] Bottom net,

A side network installed around the bottom network;

A method for producing ginger comprising:

The side net is connected to the periphery of the bottom net in a state of being deployed on the inner circumference side of the frame so as to be flush with the frame, and the upper end of the side net is Inner edge of the frame A step of bending the side net in a direction perpendicular to the inner peripheral edge of the frame body so as to follow the frame.

[8] Before releasing the flush state of the bottom net with respect to the frame body, the method further includes a step of locking an upper end of the side net to the frame body.

The method for producing ginger according to claim 7,

[9] The method further includes a step of laying a surface member that is flush with the frame on the inner peripheral side of the frame.

The method for producing ginger according to claim 7 or 8,

[10] In the process according to claim 9, a plurality of wire rods are arranged and bridged on the inner peripheral side of the frame body, and then another plurality of wire rods are formed on the inner peripheral side of the frame member to the plurality of wire rods. Bridge them side by side so that they are orthogonal to each other,

A method for producing ginger characterized in that

[11] The method further includes a step of providing a levitation member having buoyancy with respect to seawater below the surface member.

The method for producing ginger according to claim 9 or 10, wherein: