CA2669265A1 - Fish preserve, and fish preserve manufacturing method - Google Patents
Fish preserve, and fish preserve manufacturing method Download PDFInfo
- Publication number
- CA2669265A1 CA2669265A1 CA002669265A CA2669265A CA2669265A1 CA 2669265 A1 CA2669265 A1 CA 2669265A1 CA 002669265 A CA002669265 A CA 002669265A CA 2669265 A CA2669265 A CA 2669265A CA 2669265 A1 CA2669265 A1 CA 2669265A1
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- Canada
- Prior art keywords
- net
- frame body
- crawl
- side net
- inner peripheral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 36
- 241000251468 Actinopterygii Species 0.000 title abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims description 60
- 238000007667 floating Methods 0.000 claims description 19
- 239000013535 sea water Substances 0.000 claims description 13
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 8
- 238000010008 shearing Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229910000640 Fe alloy Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Farming Of Fish And Shellfish (AREA)
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 t he rupture. The fish preserve includes a bottom net (1), a side net (2) disp osed 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 an d by connecting the column lines to each other. The side net (2) is so attac hed to the bottom net (1) and the frame (3) that the column lines (a) may ex tend in vertical directions when the fish preserve (100) is disposed.</SDOAB >
Description
Description Title FISH PRESERVE, AND FISH PRESERVE MANUFACTURING METHOD
Field [0001]
The present invention relates to a fish preserve or crawl and a manufacturing method of the same.
Background
Field [0001]
The present invention relates to a fish preserve or crawl and a manufacturing method of the same.
Background
[0002]
As this kind of technology, patent document 1 discloses a crawl including a net which is immersed in and brought into contact with seawater during use for, for example, fish cultivation and the like in the sea. The net of the crawl is, for example, so-called diamond-shaped wire netting (wire netting that wires, each which is bent in a chevron shape at a fixed pitch with a jig, are continuously intertwined with each other and woven so that each stitch is in a diamond shape) shown in Figs. 1, 3 and 4 of patent document 1. Additionally, as the net of the crawl, a net is employed that wires constituting the net are woven in accordance with a uniform manufacturing of the net.
Accordingly, the net for crawls has directionality that the wires constituting the net are subjected to the fixed uniformity.
Citation List Patent Literature
As this kind of technology, patent document 1 discloses a crawl including a net which is immersed in and brought into contact with seawater during use for, for example, fish cultivation and the like in the sea. The net of the crawl is, for example, so-called diamond-shaped wire netting (wire netting that wires, each which is bent in a chevron shape at a fixed pitch with a jig, are continuously intertwined with each other and woven so that each stitch is in a diamond shape) shown in Figs. 1, 3 and 4 of patent document 1. Additionally, as the net of the crawl, a net is employed that wires constituting the net are woven in accordance with a uniform manufacturing of the net.
Accordingly, the net for crawls has directionality that the wires constituting the net are subjected to the fixed uniformity.
Citation List Patent Literature
[0003]
patent document 1: JP2001-190178A (Paragraph No. 1, Figs. 1, 3 and 4) Summary Technical Problem
patent document 1: JP2001-190178A (Paragraph No. 1, Figs. 1, 3 and 4) Summary Technical Problem
[0004]
As described above, a net constituting a crawl has some kind of directionality.
The size of the crawl, which has been conventionally used for fish cultivation and the like, is, at most, 50m (the length of an outer peripheral part of an upper end of a side net) x6 to 15m (depth). Therefore, weight applied to the whole of the crawl is small, and load applied to wires is not so large. Accordingly, the net may be constituted independently of directionality. In terms of ease in construction, a method has been widely employed that is called lateral net, in which wires of the side net extend parallel to the sea surface.
In the case of upsizing the crawl, its own weight thereof sometimes becomes several times as large as that of a conventional crawl. Additionally, under an environment of fish cultivation and the like in the sea, it is impossible to avoid influence of factors such as tides, wave heights and the like. That is, upsizing the crawl forces a large load on the wires. Further, in a material which forms the wire, generally, a lateral modulus (shearing modulus) is smaller than a longitudinal modulus (Young's modulus), and shearing stress is smaller than tensile stress. That is why the crawl constituted by the lateral net is likely to be deformed or broken since its own weight is applied, as load, to an intertwined part of the wires of the side net in a shearing direction. Additionally, the crawl is likely to be deformed or broken due to increased load applied to the wires in a fixed part that the side net is arbitrarily tied in being attached to a frame body. Furthermore, there remains a problem that a broken opening part is enlarged by its own weight.
Additionally, in the case of the lateral net of the diamond-shaped wire netting, wires of the side net continuously intertwined are parallel to the sea surface, and intertwining of the wires has no restriction force. Accordingly, when an external force is applied to the side net in a horizontal direction or a bottom net side direction due to influence of tides and the like, the crawl is likely to be deformed.
Additionally, there remains a problem that the volume of the crawl decreases.
As described above, a net constituting a crawl has some kind of directionality.
The size of the crawl, which has been conventionally used for fish cultivation and the like, is, at most, 50m (the length of an outer peripheral part of an upper end of a side net) x6 to 15m (depth). Therefore, weight applied to the whole of the crawl is small, and load applied to wires is not so large. Accordingly, the net may be constituted independently of directionality. In terms of ease in construction, a method has been widely employed that is called lateral net, in which wires of the side net extend parallel to the sea surface.
In the case of upsizing the crawl, its own weight thereof sometimes becomes several times as large as that of a conventional crawl. Additionally, under an environment of fish cultivation and the like in the sea, it is impossible to avoid influence of factors such as tides, wave heights and the like. That is, upsizing the crawl forces a large load on the wires. Further, in a material which forms the wire, generally, a lateral modulus (shearing modulus) is smaller than a longitudinal modulus (Young's modulus), and shearing stress is smaller than tensile stress. That is why the crawl constituted by the lateral net is likely to be deformed or broken since its own weight is applied, as load, to an intertwined part of the wires of the side net in a shearing direction. Additionally, the crawl is likely to be deformed or broken due to increased load applied to the wires in a fixed part that the side net is arbitrarily tied in being attached to a frame body. Furthermore, there remains a problem that a broken opening part is enlarged by its own weight.
Additionally, in the case of the lateral net of the diamond-shaped wire netting, wires of the side net continuously intertwined are parallel to the sea surface, and intertwining of the wires has no restriction force. Accordingly, when an external force is applied to the side net in a horizontal direction or a bottom net side direction due to influence of tides and the like, the crawl is likely to be deformed.
Additionally, there remains a problem that the volume of the crawl decreases.
[0005]
The present invention was made in order to solve the above problems, and it is a first object of the present invention to provide a crawl designed so as to suppress to a minimum the risk that its own weight has, and further provide a crawl that further enlargement of an opening part caused by breakage can be controlled even when a part of the net is broken by a certain factor. Further, it is a second object to provide a crawl where the cost of materials to the volume of the crawl can be reduced by upsizing the crawl. Furthermore, it is a third object to provide a crawl where the reduction in the volume during use is suppressed to a minimum compared with the volume secured in a stationary state.
Solution to Problem
The present invention was made in order to solve the above problems, and it is a first object of the present invention to provide a crawl designed so as to suppress to a minimum the risk that its own weight has, and further provide a crawl that further enlargement of an opening part caused by breakage can be controlled even when a part of the net is broken by a certain factor. Further, it is a second object to provide a crawl where the cost of materials to the volume of the crawl can be reduced by upsizing the crawl. Furthermore, it is a third object to provide a crawl where the reduction in the volume during use is suppressed to a minimum compared with the volume secured in a stationary state.
Solution to Problem
[0006]
Problems to be solved by the present invention are as described above, and next, means for solving the problems and effects of the means will be described below.
Problems to be solved by the present invention are as described above, and next, means for solving the problems and effects of the means will be described below.
[0007]
According to a first aspect of the present invention, there is provided a crawl constituted as follows. That is, the crawl includes a bottom net, a side net which is peripherally provided on the bottom net, and a frame body which is arranged along the sea surface and to which an upper end of the side net is fastened. The side net is constituted in a manner that wires formed by bending and forming metallic wires each into a predetermined shape are arranged in a row and interlocked with each other.
Additionally, the side net is attached to the bottom net and the frame body so that the plurality of row wires vertically extend when the crawl is in use. According to this constitution, even if any of the plurality of row wires constituting the side net is broken, further enlargement of an opening caused by the breakage can be controlled by other wires adjacent to the broken wire. In the crawl, since the plurality of row wires of the side net vertically extend, load is applied to the wires in a wire axis direction. In a material which forms the wire, generally, a longitudinal modulus (Young's modulus) is larger than a lateral modulus (shearing modulus), and tensile stress is larger than shearing stress. Thus, the risk that its own weight has with regard to breakage or deformation of the crawl, can be controlled, and the crawl can be upsized at minimal risk. Since the plurality of row wires of the side net vertically extend, the crawl attempts to remain at the original position in accordance with bend-rigidity that the plurality of row wires have and its own weight, in the case where an external force generated by tides or the like parallel to the sea surface is applied to the side net.
Thus, the crawl has an excellent shape retaining property. Further, in the crawl, since the row wires of the side net vertically extend, they receive compression force in the case where an external force generated by pushing-up of seawater from the bottom net side is applied to the side net. That is, resistance force of the row wires against the compression force makes the crawl retain its shape, and thus the crawl has an excellent shape retaining property.
According to a first aspect of the present invention, there is provided a crawl constituted as follows. That is, the crawl includes a bottom net, a side net which is peripherally provided on the bottom net, and a frame body which is arranged along the sea surface and to which an upper end of the side net is fastened. The side net is constituted in a manner that wires formed by bending and forming metallic wires each into a predetermined shape are arranged in a row and interlocked with each other.
Additionally, the side net is attached to the bottom net and the frame body so that the plurality of row wires vertically extend when the crawl is in use. According to this constitution, even if any of the plurality of row wires constituting the side net is broken, further enlargement of an opening caused by the breakage can be controlled by other wires adjacent to the broken wire. In the crawl, since the plurality of row wires of the side net vertically extend, load is applied to the wires in a wire axis direction. In a material which forms the wire, generally, a longitudinal modulus (Young's modulus) is larger than a lateral modulus (shearing modulus), and tensile stress is larger than shearing stress. Thus, the risk that its own weight has with regard to breakage or deformation of the crawl, can be controlled, and the crawl can be upsized at minimal risk. Since the plurality of row wires of the side net vertically extend, the crawl attempts to remain at the original position in accordance with bend-rigidity that the plurality of row wires have and its own weight, in the case where an external force generated by tides or the like parallel to the sea surface is applied to the side net.
Thus, the crawl has an excellent shape retaining property. Further, in the crawl, since the row wires of the side net vertically extend, they receive compression force in the case where an external force generated by pushing-up of seawater from the bottom net side is applied to the side net. That is, resistance force of the row wires against the compression force makes the crawl retain its shape, and thus the crawl has an excellent shape retaining property.
[0008]
Preferably, the crawl is constituted as follows. That is, the side net is peripherally provided on the bottom net via a coil-shaped connecting member, and the side net, the bottom net and the connecting member are composed of the same metallic material. According to this constitution, galvanic corrosion between the bottom net or the side net and the connecting member can be avoided, and the side net can be easily connected to the bottom net.
Preferably, the crawl is constituted as follows. That is, the side net is peripherally provided on the bottom net via a coil-shaped connecting member, and the side net, the bottom net and the connecting member are composed of the same metallic material. According to this constitution, galvanic corrosion between the bottom net or the side net and the connecting member can be avoided, and the side net can be easily connected to the bottom net.
[0009]
Preferably, the crawl is constituted as follows. That is, the bottom net and the side net are composed of copper or a copper alloy. According to the material, a crawl can be obtained that a stain-proof effect and a weed-proof effect are exerted by oligodynamie.
Preferably, the crawl is constituted as follows. That is, the bottom net and the side net are composed of copper or a copper alloy. According to the material, a crawl can be obtained that a stain-proof effect and a weed-proof effect are exerted by oligodynamie.
[0010]
Preferably, the crawl is constituted as follows. That is, the upper end of the side net is fastened to the frame body via an insulating member. According to this constitution, even if the frame body is composed of a material different from that of the side net, the galvanic corrosion between the side net and the frame body can be securely avoided, and thus the material of the frame body can be freely selected.
Preferably, the crawl is constituted as follows. That is, the upper end of the side net is fastened to the frame body via an insulating member. According to this constitution, even if the frame body is composed of a material different from that of the side net, the galvanic corrosion between the side net and the frame body can be securely avoided, and thus the material of the frame body can be freely selected.
[0011]
Preferably, the crawl is constituted as follows. That is, the length of the outer peripheral part of the upper end of the side net attached to the frame body is 50m or more. Various advantages are obtained by upsizing the crawl. For example, (1) in the case of a general crawl with a size of I Omx l Omx8m, the surface area for use is 420m2, and the volume for use is 800m3; and, (2) in the case of a crawl with a size of 24mx24mx l Om, the surface area for use is 1536m2, and the volume for use is 5760m3.
The rates of the use area to the volume in the crawl are 1.90m3/m2 in (1), and 3.75m3/m2 in (2). That is, this results in a savings cost of materials to be used for the unit volume of the crawl. If the volume of the crawl is increased by upsizing the crawl, the number of contacts between fish or contacts of fish and the net is reduced, and stress of the fish can be reduced, in the case of, for example, fish cultivation and the like. Thus, a more excellent cultivation environment can be provided.
Preferably, the crawl is constituted as follows. That is, the length of the outer peripheral part of the upper end of the side net attached to the frame body is 50m or more. Various advantages are obtained by upsizing the crawl. For example, (1) in the case of a general crawl with a size of I Omx l Omx8m, the surface area for use is 420m2, and the volume for use is 800m3; and, (2) in the case of a crawl with a size of 24mx24mx l Om, the surface area for use is 1536m2, and the volume for use is 5760m3.
The rates of the use area to the volume in the crawl are 1.90m3/m2 in (1), and 3.75m3/m2 in (2). That is, this results in a savings cost of materials to be used for the unit volume of the crawl. If the volume of the crawl is increased by upsizing the crawl, the number of contacts between fish or contacts of fish and the net is reduced, and stress of the fish can be reduced, in the case of, for example, fish cultivation and the like. Thus, a more excellent cultivation environment can be provided.
[0012]
Preferably, the crawl is constituted as follows. That is, a fastening wire used in attaching the side net to the frame body is provided by at least two meshes of the net.
According to this constitution, its net's own weight can be prevented from deforming the upper part of the net. Additionally, load to be applied to the net and fatigue of the net are reduced, and endurance thereof can be improved.
Preferably, the crawl is constituted as follows. That is, a fastening wire used in attaching the side net to the frame body is provided by at least two meshes of the net.
According to this constitution, its net's own weight can be prevented from deforming the upper part of the net. Additionally, load to be applied to the net and fatigue of the net are reduced, and endurance thereof can be improved.
[0013]
According to a second aspect of the present invention, there is provided a manufacturing method of the crawl including a bottom net, a side net which is peripherally provided on the bottom net, and the frame body which is arranged along the sea surface and to which the upper end of the side net is fastened, including the steps of: annularly connecting the side net to a peripheral edge of the bottom net which is in a state of being developed on an inner peripheral side of the frame body so as to be flush with the frame body; and, bending the side net in a direction orthogonal to an inner peripheral edge of the frame body so that the upper end of the side net is arranged along the inner peripheral edge of the frame body. According to this method, the side net is connected to the frame body and the bottom net with the frame body and the bottom net flush with each other.
According to a second aspect of the present invention, there is provided a manufacturing method of the crawl including a bottom net, a side net which is peripherally provided on the bottom net, and the frame body which is arranged along the sea surface and to which the upper end of the side net is fastened, including the steps of: annularly connecting the side net to a peripheral edge of the bottom net which is in a state of being developed on an inner peripheral side of the frame body so as to be flush with the frame body; and, bending the side net in a direction orthogonal to an inner peripheral edge of the frame body so that the upper end of the side net is arranged along the inner peripheral edge of the frame body. According to this method, the side net is connected to the frame body and the bottom net with the frame body and the bottom net flush with each other.
[0014]
Preferably, the manufacturing method is as follows. That is, the method further includes the step of fastening the upper end of the side net to the frame body before releasing a state where the bottom net is flush with the frame body.
According to this method, the side net is developed by action of its own weight of the bottom net only by releasing the state where the bottom net is flush with the frame body.
Preferably, the manufacturing method is as follows. That is, the method further includes the step of fastening the upper end of the side net to the frame body before releasing a state where the bottom net is flush with the frame body.
According to this method, the side net is developed by action of its own weight of the bottom net only by releasing the state where the bottom net is flush with the frame body.
[0015]
Preferably, the manufacturing method of the crawl is as follows. That is, the method further includes the step of laying a surface member to be 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 body so as to be flush with the frame body regardless of an environment of a manufacturing site of the crawl. That is, the manufacturing site of the crawl can be placed on the sea.
Preferably, the manufacturing method of the crawl is as follows. That is, the method further includes the step of laying a surface member to be 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 body so as to be flush with the frame body regardless of an environment of a manufacturing site of the crawl. That is, the manufacturing site of the crawl can be placed on the sea.
[0016]
Preferably, the step above is as follows. That is, a plurality of wire rods are arranged and laid on the inner peripheral side of the frame body, and then, a plurality of other wire rods are arranged and laid on the inner peripheral side of the frame body so as to be orthogonal to the plurality of wire rods. According to this step, the surface member is strengthened, and thus the state can be securely kept where the bottom net is flush with the frame body when the bottom net is developed on the surface member, and other wire rods serve as a guiding mechanism for developing the bottom net.
Preferably, the step above is as follows. That is, a plurality of wire rods are arranged and laid on the inner peripheral side of the frame body, and then, a plurality of other wire rods are arranged and laid on the inner peripheral side of the frame body so as to be orthogonal to the plurality of wire rods. According to this step, the surface member is strengthened, and thus the state can be securely kept where the bottom net is flush with the frame body when the bottom net is developed on the surface member, and other wire rods serve as a guiding mechanism for developing the bottom net.
[0017]
Preferably, the manufacturing method is as follows. That is, the method further includes the step of providing a floating member having a floating property for seawater under the surface member. According to this method, the state can be more securely kept where the bottom net is flush with the frame body.
Brief Description of Drawings
Preferably, the manufacturing method is as follows. That is, the method further includes the step of providing a floating member having a floating property for seawater under the surface member. According to this method, the state can be more securely kept where the bottom net is flush with the frame body.
Brief Description of Drawings
[0018]
Fig. 1 is a perspective view showing a set-up state of a crawl according to an embodiment of the present invention.
Fig. 2 is a partial enlarged view of Fig. 1.
Fig. 3 is a view similar to Fig. 2.
Fig. 4 is a view showing a part of a connection state of a bottom net and a side net.
Fig. 5 is a cross sectional view taken along line A-A in Fig. 1 and viewed in an arrow direction.
Fig. 6 is a view showing a state where an upper end 2a of a side net 2 is fastened to a pipe member 3c of a frame body 3 via a fastening wire rod 6.
Fig. 7 is a perspective view of the crawl according to the embodiment of the present invention, and a view showing a first step of a manufacturing method of the crawl.
Fig. 8 is a view showing a part of a second step of the manufacturing method of the crawl, and is similar to Fig. 7.
Fig. 9 is a view showing a part of the second step of the manufacturing method of the crawl, and is similar to Fig. 7.
Fig. 10 is a view showing a part of a third step of the manufacturing method of the crawl, and is similar to Fig. 7.
Fig. 11 is a view showing a part of a fourth step of the manufacturing method of the crawl, and is similar to Fig. 7.
Fig. 12 is a view showing a part of the fourth step of the manufacturing method of the crawl, and is similar to Fig. 7.
Reference Signs List
Fig. 1 is a perspective view showing a set-up state of a crawl according to an embodiment of the present invention.
Fig. 2 is a partial enlarged view of Fig. 1.
Fig. 3 is a view similar to Fig. 2.
Fig. 4 is a view showing a part of a connection state of a bottom net and a side net.
Fig. 5 is a cross sectional view taken along line A-A in Fig. 1 and viewed in an arrow direction.
Fig. 6 is a view showing a state where an upper end 2a of a side net 2 is fastened to a pipe member 3c of a frame body 3 via a fastening wire rod 6.
Fig. 7 is a perspective view of the crawl according to the embodiment of the present invention, and a view showing a first step of a manufacturing method of the crawl.
Fig. 8 is a view showing a part of a second step of the manufacturing method of the crawl, and is similar to Fig. 7.
Fig. 9 is a view showing a part of the second step of the manufacturing method of the crawl, and is similar to Fig. 7.
Fig. 10 is a view showing a part of a third step of the manufacturing method of the crawl, and is similar to Fig. 7.
Fig. 11 is a view showing a part of a fourth step of the manufacturing method of the crawl, and is similar to Fig. 7.
Fig. 12 is a view showing a part of the fourth step of the manufacturing method of the crawl, and is similar to Fig. 7.
Reference Signs List
[0019]
1 bottom net 2 side net 2a upper end 2b lower end 3 frame body 4 connecting member insulating member a row wires Description of Embodiments
1 bottom net 2 side net 2a upper end 2b lower end 3 frame body 4 connecting member insulating member a row wires Description of Embodiments
[0020]
Herein, "flush with" means "on the same surface." For example, "B member flush with A member" indicates "B member on a surface the same as a surface which can be directly conceived based on A member."
Herein, "flush with" means "on the same surface." For example, "B member flush with A member" indicates "B member on a surface the same as a surface which can be directly conceived based on A member."
[0021]
An embodiment of the present invention will be described hereinafter. Fig. 1 is a perspective view showing a set-up state of a crawl according to the embodiment of the present invention.
An embodiment of the present invention will be described hereinafter. Fig. 1 is a perspective view showing a set-up state of a crawl according to the embodiment of the present invention.
[0022]
<Summary of Crawl 100>
As shown in Fig. 1, in terms of productivity, the crawls 100 of the embodiment are set up in the sea. The crawl 100 includes a bottom net 1, a side net 2 which is peripherally provided on the bottom net 1, and a frame body 3 which is arranged along the sea surface and to which an upper end 2a of the side net 2 is fastened.
Additionally, a box type (rectangular parallelepiped-shaped) housing space is formed by the bottom net 1 and the hanging side net 2, and fish and the like of a predetermined amount are housed in the housing space. Additionally, the housing space is kept at a fixed distance from the sea surface by adding a floating property to seawater to the frame body 3.
<Summary of Crawl 100>
As shown in Fig. 1, in terms of productivity, the crawls 100 of the embodiment are set up in the sea. The crawl 100 includes a bottom net 1, a side net 2 which is peripherally provided on the bottom net 1, and a frame body 3 which is arranged along the sea surface and to which an upper end 2a of the side net 2 is fastened.
Additionally, a box type (rectangular parallelepiped-shaped) housing space is formed by the bottom net 1 and the hanging side net 2, and fish and the like of a predetermined amount are housed in the housing space. Additionally, the housing space is kept at a fixed distance from the sea surface by adding a floating property to seawater to the frame body 3.
[0023]
<Side net 2>
Fig. 2 is a partial enlarged view of Fig. 1. As shown in Fig. 2, the side net is constituted by a plurality of row wires a which are bent and formed each into a predetermined shape, arranged in a row, and interlocked with each other. That is, the side net 2 is a net constituted in a manner that the wires (row wires a), each which is bent in a chevron shape at a predetermined pitch with a jig, are continuously intertwined with each other and woven so that each stitch is in a diamond shape. As a matter of fact, the side net 2 is classified as so-called diamond-shaped wire netting.
<Side net 2>
Fig. 2 is a partial enlarged view of Fig. 1. As shown in Fig. 2, the side net is constituted by a plurality of row wires a which are bent and formed each into a predetermined shape, arranged in a row, and interlocked with each other. That is, the side net 2 is a net constituted in a manner that the wires (row wires a), each which is bent in a chevron shape at a predetermined pitch with a jig, are continuously intertwined with each other and woven so that each stitch is in a diamond shape. As a matter of fact, the side net 2 is classified as so-called diamond-shaped wire netting.
[0024]
A diameter d of the row wire a is 2.0 to 5.0mm, and a material of the wire is copper or a copper alloy in the embodiment. Compositions of the copper alloy are indicated below.
A diameter d of the row wire a is 2.0 to 5.0mm, and a material of the wire is copper or a copper alloy in the embodiment. Compositions of the copper alloy are indicated below.
[0025]
Cu [Wt%]: 62.0 - 69.0 Sn [Wt%]: 0.2 - 1.0 Ni [Wt%]: 0.1 - 1.0 =The remaining, Zn [Wt%]: 29.0 - 37.7 (containing unavoidable impurities)
Cu [Wt%]: 62.0 - 69.0 Sn [Wt%]: 0.2 - 1.0 Ni [Wt%]: 0.1 - 1.0 =The remaining, Zn [Wt%]: 29.0 - 37.7 (containing unavoidable impurities)
[0026]
Here, reference is made to Fig. 3, as shown in the figure, a lower end 2b of the side net 2 is subjected to double knuckle type processing that the row wire a is bent at approximately 180 and fastened to the adjacent row wire so as to be intertwined therewith. An upper end 2a of the side net 2 is similarly subjected to the double knuckle type processing (see Fig. 1).
Here, reference is made to Fig. 3, as shown in the figure, a lower end 2b of the side net 2 is subjected to double knuckle type processing that the row wire a is bent at approximately 180 and fastened to the adjacent row wire so as to be intertwined therewith. An upper end 2a of the side net 2 is similarly subjected to the double knuckle type processing (see Fig. 1).
[0027]
Additionally, as shown in Fig. 2, the side net 2 is attached to the bottom net and the frame body 3 so that the row wires a vertically extend when the crawl 100 is in use.
Additionally, as shown in Fig. 2, the side net 2 is attached to the bottom net and the frame body 3 so that the row wires a vertically extend when the crawl 100 is in use.
[0028]
<Bottom net 1>
The bottom net 1 of the embodiment is, similar to the side net 2, classified into so-called diamond-shaped wire netting. Processing of an end of the bottom net 1, and the diameter d and the material of the row wire a of the net 1 are similar to those of the side net 2.
<Bottom net 1>
The bottom net 1 of the embodiment is, similar to the side net 2, classified into so-called diamond-shaped wire netting. Processing of an end of the bottom net 1, and the diameter d and the material of the row wire a of the net 1 are similar to those of the side net 2.
[0029]
<Connection of Bottom net 1 and Side net 2>
As described above, the side net 2 is peripherally provided on the bottom net (see Fig. 1). Fig. 4 is a view showing a part of a connection state of the bottom net and the side net.
<Connection of Bottom net 1 and Side net 2>
As described above, the side net 2 is peripherally provided on the bottom net (see Fig. 1). Fig. 4 is a view showing a part of a connection state of the bottom net and the side net.
[0030]
As shown in Fig. 4, the side net 2 is connected to the bottom net 1 via a connecting member 4 formed in a coil shape. That is, the coil-shaped connecting member 4 alternatively (mesh by mesh) passes through a stitch of the side net 2 and a stitch of the bottom net 1, and thus the side net 2 is connected to the bottom net 1.
Additionally, the side net 2, the bottom net 1 and the connecting member 4 are composed of the same metallic material (copper or a copper alloy in the embodiment).
Moreover, the connecting member 4 may be coiled smoothly with no corner or coiled with a corner.
As shown in Fig. 4, the side net 2 is connected to the bottom net 1 via a connecting member 4 formed in a coil shape. That is, the coil-shaped connecting member 4 alternatively (mesh by mesh) passes through a stitch of the side net 2 and a stitch of the bottom net 1, and thus the side net 2 is connected to the bottom net 1.
Additionally, the side net 2, the bottom net 1 and the connecting member 4 are composed of the same metallic material (copper or a copper alloy in the embodiment).
Moreover, the connecting member 4 may be coiled smoothly with no corner or coiled with a corner.
[0031]
<Frame body 3>
Next, the frame body 3 will be described with reference to Fig. 1. As described above, the floating property for seawater is added to the frame body 3.
Specifically, a plurality of floats (not shown) are provided on the frame body 3, the floats float on the seawater so that the frame body 3 has the floating property for seawater, and therefore the frame body 3 is arranged along the sea surface. In the embodiment, a material of the frame body 3 is iron or an iron alloy, and the size of the frame body is 24[m] square.
<Frame body 3>
Next, the frame body 3 will be described with reference to Fig. 1. As described above, the floating property for seawater is added to the frame body 3.
Specifically, a plurality of floats (not shown) are provided on the frame body 3, the floats float on the seawater so that the frame body 3 has the floating property for seawater, and therefore the frame body 3 is arranged along the sea surface. In the embodiment, a material of the frame body 3 is iron or an iron alloy, and the size of the frame body is 24[m] square.
[0032]
The frame body 3 has various functions as follows: a first function of, as described above, keeping the distance constantly from the sea surface to the housing space while the upper end 2a of the side net 2 is fastened to the frame body, the housing space being formed by the side net 2 and the bottom net 1; a second function of keeping the shape of the housing space; and, a third function of providing a footing for smoothly performing work associated with the crawl 100, for example, feeding work for fish and the like housed in the housing space. Additionally, in order to sufficiently fulfill the third function, the frame body 3 includes a plate not shown (plate 3a: see Fig. 5) along the outer periphery.
The frame body 3 has various functions as follows: a first function of, as described above, keeping the distance constantly from the sea surface to the housing space while the upper end 2a of the side net 2 is fastened to the frame body, the housing space being formed by the side net 2 and the bottom net 1; a second function of keeping the shape of the housing space; and, a third function of providing a footing for smoothly performing work associated with the crawl 100, for example, feeding work for fish and the like housed in the housing space. Additionally, in order to sufficiently fulfill the third function, the frame body 3 includes a plate not shown (plate 3a: see Fig. 5) along the outer periphery.
[0033]
<Fastening Side net 2 to Frame body 3>
Next, fastening the upper end 2a of the side net 2 to the frame body 3 will be described in detail. In the embodiment, the upper end 2a of the side net 2 is fastened to the frame body 3 via an insulating member 5.
<Fastening Side net 2 to Frame body 3>
Next, fastening the upper end 2a of the side net 2 to the frame body 3 will be described in detail. In the embodiment, the upper end 2a of the side net 2 is fastened to the frame body 3 via an insulating member 5.
[0034]
Here, reference is made to Fig. 5, which is a cross sectional view taken along line A-A in Fig. 1 and viewed in an arrow direction. As shown in Fig. 5, the frame body 3 includes, from the outer peripheral side to the inner peripheral side, the plate 3a, a main frame body 3b, a pipe member 3c having a predetermined diameter which is fixed to the main frame body 3b via a bridging member 3d and eases fastening the upper end 2a of the side net 2 to the frame body 3, in this order. That is, the metallic pipe member 3c is provided on the inner peripheral side of the frame body 3.
Additionally, the insulating member 5 having a thickness of 2 to 5 [mm] is wound around an outer peripheral surface of the pipe member 3c, the insulating member 5 being composed of resin of vinyl chloride, polyethylene, polypropylene, polyester or the like. Additionally, a slit (not shown) is provided in the insulating member 5 so that the insulating member 5 is easily wound around the outer peripheral surface of the pipe member 3c.
Here, reference is made to Fig. 5, which is a cross sectional view taken along line A-A in Fig. 1 and viewed in an arrow direction. As shown in Fig. 5, the frame body 3 includes, from the outer peripheral side to the inner peripheral side, the plate 3a, a main frame body 3b, a pipe member 3c having a predetermined diameter which is fixed to the main frame body 3b via a bridging member 3d and eases fastening the upper end 2a of the side net 2 to the frame body 3, in this order. That is, the metallic pipe member 3c is provided on the inner peripheral side of the frame body 3.
Additionally, the insulating member 5 having a thickness of 2 to 5 [mm] is wound around an outer peripheral surface of the pipe member 3c, the insulating member 5 being composed of resin of vinyl chloride, polyethylene, polypropylene, polyester or the like. Additionally, a slit (not shown) is provided in the insulating member 5 so that the insulating member 5 is easily wound around the outer peripheral surface of the pipe member 3c.
[0035]
The upper end 2a of the side net 2 is fastened to the frame body 3 via the insulating member 5 and with use of a fastening wire rod 6 composed of a material the same as that of the side net 2. That is, the fastening wire rod 6 includes a knot (not shown), passes through the inside of the stitch of the side net 2, and is wound around an outer periphery of the insulating member 5. Accordingly, the upper end 2a of the side net 2 is fastened to the frame main body 3b via the fastening wire rod 6 passing through the stitch of the side net 2, the insulating member 5 around which the fastening wire rod 6 is wound, and the pipe member 3c having the outer peripheral surface around which the insulating member 5 is wound.
The upper end 2a of the side net 2 is fastened to the frame body 3 via the insulating member 5 and with use of a fastening wire rod 6 composed of a material the same as that of the side net 2. That is, the fastening wire rod 6 includes a knot (not shown), passes through the inside of the stitch of the side net 2, and is wound around an outer periphery of the insulating member 5. Accordingly, the upper end 2a of the side net 2 is fastened to the frame main body 3b via the fastening wire rod 6 passing through the stitch of the side net 2, the insulating member 5 around which the fastening wire rod 6 is wound, and the pipe member 3c having the outer peripheral surface around which the insulating member 5 is wound.
[0036]
Moreover, in the embodiment, a reinforcing wire rod 7, which serves as a wire ~
rod for aligning the ends of the side net 2, are made to penetrate the ends of the side net 2 (upper end 2a side shown in Fig. 5, lower end 2b side shown in Fig. 3).
Additionally, the reinforcing wire 7, which is made to penetrate the ends on the upper end 2a side of the side net 2, is arranged on the inner peripheral side of the fastening wire rod 6, and the other reinforcing wire 7, which is made to penetrate the ends on the lower end 2b side of the side net 2, is arranged on the inner peripheral side of the connecting member 4 shown in Fig. 4.
Moreover, in the embodiment, a reinforcing wire rod 7, which serves as a wire ~
rod for aligning the ends of the side net 2, are made to penetrate the ends of the side net 2 (upper end 2a side shown in Fig. 5, lower end 2b side shown in Fig. 3).
Additionally, the reinforcing wire 7, which is made to penetrate the ends on the upper end 2a side of the side net 2, is arranged on the inner peripheral side of the fastening wire rod 6, and the other reinforcing wire 7, which is made to penetrate the ends on the lower end 2b side of the side net 2, is arranged on the inner peripheral side of the connecting member 4 shown in Fig. 4.
[0037]
Next, a manufacturing method of the crawl 100 will be described. Here, it is assumed that the frame body 3 including the floats is arranged along the sea surface.
Next, a manufacturing method of the crawl 100 will be described. Here, it is assumed that the frame body 3 including the floats is arranged along the sea surface.
[0038]
<First Step: Set-up of Floating member 10>
In the step, the floating member 10 having the floating property for seawater is provided. Fig. 7 is a perspective view of the crawl according to the embodiment of the present invention, and shows the first step of the manufacturing method of the crawl. The floating member 10 is composed of, for example, a resin float having a floating and sinking property, and is arranged at the approximate center of the inner peripheral side of the frame body 3.
<First Step: Set-up of Floating member 10>
In the step, the floating member 10 having the floating property for seawater is provided. Fig. 7 is a perspective view of the crawl according to the embodiment of the present invention, and shows the first step of the manufacturing method of the crawl. The floating member 10 is composed of, for example, a resin float having a floating and sinking property, and is arranged at the approximate center of the inner peripheral side of the frame body 3.
[0039]
<Second Step: Laying Surface member 9>
In the step, a surface member is laid on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3. The step will be described in detail below.
<Second Step: Laying Surface member 9>
In the step, a surface member is laid on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3. The step will be described in detail below.
[0040]
Here, reference is made to Fig. 8, which is a view showing a part of the second step of the manufacturing method of the crawl, and is similar to Fig. 7. As shown in Fig. 8, first, a plurality of bridging wire rods 8a are arranged and laid on the inner peripheral side of the frame body 3.
Here, reference is made to Fig. 8, which is a view showing a part of the second step of the manufacturing method of the crawl, and is similar to Fig. 7. As shown in Fig. 8, first, a plurality of bridging wire rods 8a are arranged and laid on the inner peripheral side of the frame body 3.
[0041]
The bridging wire rod 8a is composed of iron or an iron alloy, and has a diameter of 2 to 4 [mm]. Additionally, the plurality of bridging wire rods 8a are arranged at a predetermined interval (e.g. 50 [cm]) on the inner peripheral side of the frame body 3. At this time, each end of the bridging wire rods 8a is fastened to the pipe member 3c. That is, each bridging wire rod 8a is bridged between a pair of pipe members 3c and 3c opposite to each other. If a proper tension is applied to the bridging wire rod 8a fastened between the pipe members 3c and 3c, anything is applicable as a fastening method of the wire rod 8a. Moreover, at this time, the bridging wire rod 8a is bridged so as to be positioned above the floating member 10.
The bridging wire rod 8a is composed of iron or an iron alloy, and has a diameter of 2 to 4 [mm]. Additionally, the plurality of bridging wire rods 8a are arranged at a predetermined interval (e.g. 50 [cm]) on the inner peripheral side of the frame body 3. At this time, each end of the bridging wire rods 8a is fastened to the pipe member 3c. That is, each bridging wire rod 8a is bridged between a pair of pipe members 3c and 3c opposite to each other. If a proper tension is applied to the bridging wire rod 8a fastened between the pipe members 3c and 3c, anything is applicable as a fastening method of the wire rod 8a. Moreover, at this time, the bridging wire rod 8a is bridged so as to be positioned above the floating member 10.
[0042]
Here, reference is made to Fig. 9, which is a view showing a part of the second step of the manufacturing method of the crawl, and is similar to Fig. 7. The bridging wire rods 8a are arranged and laid on the inner peripheral side of the frame body 3 as described above, and then other bridging wire rods 8b (on the bridging wire rods 8a) are arranged and laid on the inner peripheral side of the frame body 3 so as to be orthogonal to the bridging wire rods 8a.
Here, reference is made to Fig. 9, which is a view showing a part of the second step of the manufacturing method of the crawl, and is similar to Fig. 7. The bridging wire rods 8a are arranged and laid on the inner peripheral side of the frame body 3 as described above, and then other bridging wire rods 8b (on the bridging wire rods 8a) are arranged and laid on the inner peripheral side of the frame body 3 so as to be orthogonal to the bridging wire rods 8a.
[0043]
Material, diameter, interval and fastening method to the pipe member 3c of the bridging wire(s) 8b are similar to those of the bridging wire(s) 8a.
Material, diameter, interval and fastening method to the pipe member 3c of the bridging wire(s) 8b are similar to those of the bridging wire(s) 8a.
[0044]
The plurality of bridging wire rods 8a and the bridging wire rods 8b are thus laid on the inner peripheral side of the frame body 3 so as to be orthogonal to each other, and thus the surface member 9 to be flush with the frame body 3 is laid.
Additionally, the surface member 9 is thus strongly supported by both the frame member 3 having the floating property for seawater and the floating member 10 so as to be separated from the sea surface at a predetermined distance.
The plurality of bridging wire rods 8a and the bridging wire rods 8b are thus laid on the inner peripheral side of the frame body 3 so as to be orthogonal to each other, and thus the surface member 9 to be flush with the frame body 3 is laid.
Additionally, the surface member 9 is thus strongly supported by both the frame member 3 having the floating property for seawater and the floating member 10 so as to be separated from the sea surface at a predetermined distance.
[0045]
<Third Step: Laying Bottom net 1>
In the step, the bottom net 1 is developed on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3. That is, the bottom net 1 is developed on the surface member 9 flush with the frame body 3. The step will be described in detail below.
<Third Step: Laying Bottom net 1>
In the step, the bottom net 1 is developed on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3. That is, the bottom net 1 is developed on the surface member 9 flush with the frame body 3. The step will be described in detail below.
[0046]
Here, reference is made to Fig. 10, which is a view showing a part of the third step of the manufacturing method of the crawl, and is similar to Fig. 7. As shown in Fig. 10, the bottom net 1 is divided into the predetermined number of nets 1 a, 1 a... in a direction parallel to an extending direction D I of the row wires a constituting the bottom net 1 in advance of being developed on the surface member 9. These nets I a, 1 a... are carried to the inner peripheral side of the frame body 3 in an extending direction of the bridging wire rods 8b constituting the surface member 9. At this time, since the bridging wire rods 8b are arranged on the bridging wire rods 8a, the bridging wire rods 8b serve as a guiding mechanism for carrying the nets l a, 1 a... to the inner peripheral side of the frame body 3, and thus smooth carriage of the nets 1 a, 1 a... is realized.
Here, reference is made to Fig. 10, which is a view showing a part of the third step of the manufacturing method of the crawl, and is similar to Fig. 7. As shown in Fig. 10, the bottom net 1 is divided into the predetermined number of nets 1 a, 1 a... in a direction parallel to an extending direction D I of the row wires a constituting the bottom net 1 in advance of being developed on the surface member 9. These nets I a, 1 a... are carried to the inner peripheral side of the frame body 3 in an extending direction of the bridging wire rods 8b constituting the surface member 9. At this time, since the bridging wire rods 8b are arranged on the bridging wire rods 8a, the bridging wire rods 8b serve as a guiding mechanism for carrying the nets l a, 1 a... to the inner peripheral side of the frame body 3, and thus smooth carriage of the nets 1 a, 1 a... is realized.
[0047]
Next, the nets 1 a, 1 a... carried to the inner peripheral side of the frame body 3 are developed in an extending direction D2 of the bridging wire rods 8b, and the ends (ends in a developing direction) of the nets l a, l a adjacent to each other are connected to each other. Thus, the bottom net 1 is developed on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3. Moreover, the ends of the nets 1 a, 1 a adjacent to each other may be stitched to be connected to each other with use of another prepared row wire a, or may be connected to each other by another known connecting method.
Next, the nets 1 a, 1 a... carried to the inner peripheral side of the frame body 3 are developed in an extending direction D2 of the bridging wire rods 8b, and the ends (ends in a developing direction) of the nets l a, l a adjacent to each other are connected to each other. Thus, the bottom net 1 is developed on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3. Moreover, the ends of the nets 1 a, 1 a adjacent to each other may be stitched to be connected to each other with use of another prepared row wire a, or may be connected to each other by another known connecting method.
[0048]
<Fourth Step: Connection of Side net 2 to Bottom net 1>
In the step, the side net 2 is annularly connected to a peripheral edge of the bottom net 1 in a state of being developed on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3, and is bent in a direction orthogonal to an inner peripheral edge of the frame body 3 so that the upper end 2a of the side net 2 is arranged along the inner peripheral edge of the frame body 3. The step will be described in detail below.
<Fourth Step: Connection of Side net 2 to Bottom net 1>
In the step, the side net 2 is annularly connected to a peripheral edge of the bottom net 1 in a state of being developed on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3, and is bent in a direction orthogonal to an inner peripheral edge of the frame body 3 so that the upper end 2a of the side net 2 is arranged along the inner peripheral edge of the frame body 3. The step will be described in detail below.
[0049]
Here, reference is made to Fig. 11, which is a view showing a part of the fourth step of the manufacturing method of the crawl, and is similar to Fig.
7.
Moreover, the thick line arrow in Fig. 11 indicates the extending direction of the row wires a.
Here, reference is made to Fig. 11, which is a view showing a part of the fourth step of the manufacturing method of the crawl, and is similar to Fig.
7.
Moreover, the thick line arrow in Fig. 11 indicates the extending direction of the row wires a.
[0050]
As shown in Fig. 1, the side net 2 is annularly formed when the crawl 100 is in use. However, in consideration of workability of assembling the crawl 100, the side net 2 is carried to the inner peripheral side of the frame body 3 with the net 2 divided into a great number of parts in a direction orthogonal to the extending direction of the row wire a, and spirally rolled.
As shown in Fig. 1, the side net 2 is annularly formed when the crawl 100 is in use. However, in consideration of workability of assembling the crawl 100, the side net 2 is carried to the inner peripheral side of the frame body 3 with the net 2 divided into a great number of parts in a direction orthogonal to the extending direction of the row wire a, and spirally rolled.
[0051]
Then, the side net 2 divided and spirally rolled is developed and mounted on the bottom net 1 so that the plurality of row wires a constituting the side net 2 vertically extend when the crawl 100 is in use. At this time, the lower end 2b of the divided side net 2 is set to be arranged along the peripheral edge of the bottom net 1.
Then, the divisional parts of the side net 2 are stitched so that the side net 2 is annularly formed on the bottom net 1. Fig. 11 is a view showing a state where the side net 2 to be annularly formed is completed not by the whole periphery but by half the periphery.
Then, the side net 2 divided and spirally rolled is developed and mounted on the bottom net 1 so that the plurality of row wires a constituting the side net 2 vertically extend when the crawl 100 is in use. At this time, the lower end 2b of the divided side net 2 is set to be arranged along the peripheral edge of the bottom net 1.
Then, the divisional parts of the side net 2 are stitched so that the side net 2 is annularly formed on the bottom net 1. Fig. 11 is a view showing a state where the side net 2 to be annularly formed is completed not by the whole periphery but by half the periphery.
[0052]
Next, as described above, the reinforcing members 7 are made to penetrate the ends of the upper end 2a side and the lower end 2b side of the side net 2 annularly formed on the bottom net 1, respectively (see Fig. 5 together).
Next, as described above, the reinforcing members 7 are made to penetrate the ends of the upper end 2a side and the lower end 2b side of the side net 2 annularly formed on the bottom net 1, respectively (see Fig. 5 together).
[0053]
Then, the side net 2 is connected to the peripheral edge of the bottom net 1.
As described above, the connecting member 4 formed in the coil shape is used in this connection. At this time, the reinforcing wire 7 penetrating the end on the lower end 2b side of the side net 2 must be arranged on the inner peripheral side of the connecting member 4.
Then, the side net 2 is connected to the peripheral edge of the bottom net 1.
As described above, the connecting member 4 formed in the coil shape is used in this connection. At this time, the reinforcing wire 7 penetrating the end on the lower end 2b side of the side net 2 must be arranged on the inner peripheral side of the connecting member 4.
[0054]
Fig. 12 is a view showing a part of the fourth step of the manufacturing method of the crawl, and is similar to Fig. 7. The side net 2 is annularly connected to the peripheral edge of the bottom net 1, and then, as shown in Fig. 12, is bent in a direction D3 (indicated by a thick line arrow in Fig.12) orthogonal to the inner peripheral edge of the frame body 3 so that the upper end 2a of the side net 2 is arranged along the inner peripheral edge of the frame body 3. The step will be described in detail below.
Fig. 12 is a view showing a part of the fourth step of the manufacturing method of the crawl, and is similar to Fig. 7. The side net 2 is annularly connected to the peripheral edge of the bottom net 1, and then, as shown in Fig. 12, is bent in a direction D3 (indicated by a thick line arrow in Fig.12) orthogonal to the inner peripheral edge of the frame body 3 so that the upper end 2a of the side net 2 is arranged along the inner peripheral edge of the frame body 3. The step will be described in detail below.
[0055]
That is, the side net 2 is folded back in the direction D3 shown in Fig. 12 so that the upper end 2a of the side net 2 positioned at the approximate center of the frame body 3 in the state shown in Fig. 11 is arranged along the inner peripheral edge (pipe member 3c in the embodiment) of the frame body 3.
That is, the side net 2 is folded back in the direction D3 shown in Fig. 12 so that the upper end 2a of the side net 2 positioned at the approximate center of the frame body 3 in the state shown in Fig. 11 is arranged along the inner peripheral edge (pipe member 3c in the embodiment) of the frame body 3.
[0056]
<Fifth Step: Fastening Side net 2 to Frame body 3>
In the step, the upper end 2a of the side net 2 is fastened to the frame body before releasing the state where the bottom net 1 is flush with the frame body 3.
<Fifth Step: Fastening Side net 2 to Frame body 3>
In the step, the upper end 2a of the side net 2 is fastened to the frame body before releasing the state where the bottom net 1 is flush with the frame body 3.
[0057]
Here, reference is made to Fig. 5, which is a view showing a state of the upper end 2a of the side net 2 being fastened to the frame body 3. As shown in the figure, the upper end 2a of the side net 2 is fastened to the pipe member 3c of the frame body 3 with use of the fastening wire rod 6. At this time, since the insulating member 5 is interposed between the fastening wire rod 6 and the pipe member 3c, the fastening wire rod 6 and the pipe member 3c are electrically insulated from each other.
Here, reference is made to Fig. 5, which is a view showing a state of the upper end 2a of the side net 2 being fastened to the frame body 3. As shown in the figure, the upper end 2a of the side net 2 is fastened to the pipe member 3c of the frame body 3 with use of the fastening wire rod 6. At this time, since the insulating member 5 is interposed between the fastening wire rod 6 and the pipe member 3c, the fastening wire rod 6 and the pipe member 3c are electrically insulated from each other.
[0058]
<Sixth Step: Releasing state where Bottom net 1 is flush with Frame body 3>
In the step, the state is released where the bottom net 1 is flush with the frame body 3. That is, the floating member 10 shown in Fig. 7 is removed, the bridging wire rods 8a and bridging wire rods 8b laid on the inner peripheral side of the frame body 3 are slowly thinned out as shown in Fig. 9, the bottom net 1 is slowly sunk into the sea due to its own weight, and thus the state is released where the bottom net 1 is flush with the frame body 3. Thus, the side net 2 bent as shown in Fig. 12 is vertically developed to shift into the state shown in Fig. 1, and manufacturing the crawl 100 is completed.
<Sixth Step: Releasing state where Bottom net 1 is flush with Frame body 3>
In the step, the state is released where the bottom net 1 is flush with the frame body 3. That is, the floating member 10 shown in Fig. 7 is removed, the bridging wire rods 8a and bridging wire rods 8b laid on the inner peripheral side of the frame body 3 are slowly thinned out as shown in Fig. 9, the bottom net 1 is slowly sunk into the sea due to its own weight, and thus the state is released where the bottom net 1 is flush with the frame body 3. Thus, the side net 2 bent as shown in Fig. 12 is vertically developed to shift into the state shown in Fig. 1, and manufacturing the crawl 100 is completed.
[0059]
As described above, the crawl 100 of the embodiment is constituted as follows.
That is, the crawl 100 includes the bottom net 1, the side net 2 which is peripherally provided on the bottom net 1, and the frame body 3 which is arranged along the sea surface and to which the upper end 2a of the side net 2 is fastened. The side net 2 is constituted in a manner that the row wires a formed by bending and forming metallic wires each into a predetermined shape are arranged in a row and interlocked with each other. The side net 2 is attached to the bottom net 1 and the frame body 3 so that the plurality of row wires a vertically extend when the crawl 100 is in use.
According to this constitution, even if any of the plurality of row wires a constituting the side net 2 is broken, further enlargement of an opening caused by a breakage can be controlled by other row wires a adjacent to the broken row wire a. Additionally, according to this constitution, since its own weight of the bottom net 1 makes each of row wires a of the side net 2 as a line, an extreme advantage is obtained in terms of strength, compared with the case where, for example, row wires a are arranged so as to horizontally extend and its own weight of the bottom net 1 makes each of row wires a of the side net 2 further bent. In the crawl 100, since the row wires a of the side net 2 vertically extend, load is applied to the wires in a wire axis direction. In a material which forms the wire, generally, a longitudinal modulus (Young's modulus) is larger than a lateral modulus (shearing modulus), and tensile stress is larger than shearing stress.
Thus, the risk that its own weight has, a breakage or deformation of the crawl, can be controlled, and the crawl 100 can be upsized at minimal risk. Since the plurality of row wires a of the side net 2 vertically extend, the crawl 100 attempts to remain at the original position in accordance with bend-rigidity owned by the row wires a and its own weight, in the case where an external force generated by tides or the like parallel to the sea surface is applied to the side net 2. Thus, the crawl 100 has an excellent shape retaining property. Further, in the crawl 100, since the plurality of row wires a of the side net 2 vertically extend, they receive compression force in the case where an external force generated by pushing-up of seawater from the bottom net 1 side is applied to the side net 2. That is, resistance force of the row wires a against the compression force makes the crawl 100 keep its shape, and thus the crawl 100 has an excellent shape retaining property.
As described above, the crawl 100 of the embodiment is constituted as follows.
That is, the crawl 100 includes the bottom net 1, the side net 2 which is peripherally provided on the bottom net 1, and the frame body 3 which is arranged along the sea surface and to which the upper end 2a of the side net 2 is fastened. The side net 2 is constituted in a manner that the row wires a formed by bending and forming metallic wires each into a predetermined shape are arranged in a row and interlocked with each other. The side net 2 is attached to the bottom net 1 and the frame body 3 so that the plurality of row wires a vertically extend when the crawl 100 is in use.
According to this constitution, even if any of the plurality of row wires a constituting the side net 2 is broken, further enlargement of an opening caused by a breakage can be controlled by other row wires a adjacent to the broken row wire a. Additionally, according to this constitution, since its own weight of the bottom net 1 makes each of row wires a of the side net 2 as a line, an extreme advantage is obtained in terms of strength, compared with the case where, for example, row wires a are arranged so as to horizontally extend and its own weight of the bottom net 1 makes each of row wires a of the side net 2 further bent. In the crawl 100, since the row wires a of the side net 2 vertically extend, load is applied to the wires in a wire axis direction. In a material which forms the wire, generally, a longitudinal modulus (Young's modulus) is larger than a lateral modulus (shearing modulus), and tensile stress is larger than shearing stress.
Thus, the risk that its own weight has, a breakage or deformation of the crawl, can be controlled, and the crawl 100 can be upsized at minimal risk. Since the plurality of row wires a of the side net 2 vertically extend, the crawl 100 attempts to remain at the original position in accordance with bend-rigidity owned by the row wires a and its own weight, in the case where an external force generated by tides or the like parallel to the sea surface is applied to the side net 2. Thus, the crawl 100 has an excellent shape retaining property. Further, in the crawl 100, since the plurality of row wires a of the side net 2 vertically extend, they receive compression force in the case where an external force generated by pushing-up of seawater from the bottom net 1 side is applied to the side net 2. That is, resistance force of the row wires a against the compression force makes the crawl 100 keep its shape, and thus the crawl 100 has an excellent shape retaining property.
[0060]
The crawl 100 is further constituted as follows. That is, the side net 2 is peripherally provided on the bottom net 1 via the coil-shaped connecting member 4.
The side net 2, the bottom net I and the connecting member 4 are composed of the same metallic material. According to this constitution, 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 can be easily connected to the bottom net 1. Further, this constitution allows the side net 2 to rotate relatively to the bottom net 1.
The crawl 100 is further constituted as follows. That is, the side net 2 is peripherally provided on the bottom net 1 via the coil-shaped connecting member 4.
The side net 2, the bottom net I and the connecting member 4 are composed of the same metallic material. According to this constitution, 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 can be easily connected to the bottom net 1. Further, this constitution allows the side net 2 to rotate relatively to the bottom net 1.
[0061]
The crawl 100 is further constituted as follows. That is, the bottom net 1 and the side net 2 are composed of copper or a copper alloy. According to the material, a crawl can be obtained that stain-proof effect and weed-proof effect are exerted by oligodynamie. Further, since the stitches of the side net 2 are not closed according to the stain-proof effect and weed-proof effect, the following extremely advantageous effects (1) to (3) are obtained: (1) labor for cleaning the crawl 100 is reduced; (2) seawater containing a sufficient amount of oxygen is securely supplied into the crawl 100; and, (3) environment load is reduced since weed, shellfish and the like are hardly piled up.
The crawl 100 is further constituted as follows. That is, the bottom net 1 and the side net 2 are composed of copper or a copper alloy. According to the material, a crawl can be obtained that stain-proof effect and weed-proof effect are exerted by oligodynamie. Further, since the stitches of the side net 2 are not closed according to the stain-proof effect and weed-proof effect, the following extremely advantageous effects (1) to (3) are obtained: (1) labor for cleaning the crawl 100 is reduced; (2) seawater containing a sufficient amount of oxygen is securely supplied into the crawl 100; and, (3) environment load is reduced since weed, shellfish and the like are hardly piled up.
[0062]
The crawl 100 is further constituted as follows. That is, the upper end 2a of the side net 2 is fastened to the frame body 3 via the insulating member 5.
According to this constitution, since the galvanic corrosion between the side net 2 and the frame body 3 is securely avoided even if the frame body 3 is composed of a material different from that of the side net 2, a material of the frame body 3 can be freely selected.
The crawl 100 is further constituted as follows. That is, the upper end 2a of the side net 2 is fastened to the frame body 3 via the insulating member 5.
According to this constitution, since the galvanic corrosion between the side net 2 and the frame body 3 is securely avoided even if the frame body 3 is composed of a material different from that of the side net 2, a material of the frame body 3 can be freely selected.
[0063]
The crawl 100 is further constituted as follows. That is, the length of the outer peripheral part of the upper end of the side net 2 attached to the frame body 3 is 50m or more. According to this constitution, various advantages are obtained by upsizing the crawl. For example, (1) in the case of a general crawl with the size of 10mxlOmX8m, the surface area for use is 420m2, and the volume for use is 800m3; and, (2) in the case of a crawl with the size of 24mx24mx 10m, the surface area for use is 1536m2, and the volume for use is 5760m3. The rates of the use area to the volume in the crawl are 1.90m3/m2 in (1), and 3.75m3/m2 in (2). That is, this results in a savings cost of materials to be used for unit volume of the crawl. If the volume of the crawl is increased by upsizing the crawl 100, the number of contacts between fish or contacts of fish and the net is reduced, and stress of the fish can be reduced, in the case of, for example, fish cultivation and the like. Thus, a more excellent cultivation environment can be provided.
The crawl 100 is further constituted as follows. That is, the length of the outer peripheral part of the upper end of the side net 2 attached to the frame body 3 is 50m or more. According to this constitution, various advantages are obtained by upsizing the crawl. For example, (1) in the case of a general crawl with the size of 10mxlOmX8m, the surface area for use is 420m2, and the volume for use is 800m3; and, (2) in the case of a crawl with the size of 24mx24mx 10m, the surface area for use is 1536m2, and the volume for use is 5760m3. The rates of the use area to the volume in the crawl are 1.90m3/m2 in (1), and 3.75m3/m2 in (2). That is, this results in a savings cost of materials to be used for unit volume of the crawl. If the volume of the crawl is increased by upsizing the crawl 100, the number of contacts between fish or contacts of fish and the net is reduced, and stress of the fish can be reduced, in the case of, for example, fish cultivation and the like. Thus, a more excellent cultivation environment can be provided.
[0064]
The crawl 100 is further constituted as follows. That is, the fastening wire rod 6 used in attaching the side net 2 to the frame body 3 is provided by at least two meshes of the net. According to this constitution, its own weight of the net can be prevented from deforming the upper part of the net. Additionally, load to be applied to the net and fatigue of the net are reduced, and endurance thereof can be improved.
The crawl 100 is further constituted as follows. That is, the fastening wire rod 6 used in attaching the side net 2 to the frame body 3 is provided by at least two meshes of the net. According to this constitution, its own weight of the net can be prevented from deforming the upper part of the net. Additionally, load to be applied to the net and fatigue of the net are reduced, and endurance thereof can be improved.
[0065]
According to the embodiment described above, there is provided a manufacturing method of the crawl 100 including the bottom net 1, the side net which is peripherally provided on the bottom net 1, and the frame body 3 which is arranged along the sea surface and to which the upper end 2a of the side net 2 is fastened, including the steps of: annularly connecting the side net 2 to the peripheral edge of the bottom net 1 which is in a state of being developed on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3; and, bending the side net 2 in the direction orthogonal to the inner peripheral edge of the frame body 3 so that the upper end 2a of the side net 2 is arranged along the inner peripheral edge of the frame body 3. According to this method, the side net 2 is connected to the frame body 3 and the bottom net 1 with the frame body 3 and the bottom net 1 flush with each other.
According to the embodiment described above, there is provided a manufacturing method of the crawl 100 including the bottom net 1, the side net which is peripherally provided on the bottom net 1, and the frame body 3 which is arranged along the sea surface and to which the upper end 2a of the side net 2 is fastened, including the steps of: annularly connecting the side net 2 to the peripheral edge of the bottom net 1 which is in a state of being developed on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3; and, bending the side net 2 in the direction orthogonal to the inner peripheral edge of the frame body 3 so that the upper end 2a of the side net 2 is arranged along the inner peripheral edge of the frame body 3. According to this method, the side net 2 is connected to the frame body 3 and the bottom net 1 with the frame body 3 and the bottom net 1 flush with each other.
[0066]
The manufacturing method of the crawl 100 further includes the step of fastening the upper end 2a of the side net 2 to the frame body 3 before releasing the state where the bottom net 1 is flush with the frame body 3. According to this method, the side net 2 is developed by action of its own weight of the bottom net 1 only by releasing the state where the bottom net I is flush with the frame body 3.
The manufacturing method of the crawl 100 further includes the step of fastening the upper end 2a of the side net 2 to the frame body 3 before releasing the state where the bottom net 1 is flush with the frame body 3. According to this method, the side net 2 is developed by action of its own weight of the bottom net 1 only by releasing the state where the bottom net I is flush with the frame body 3.
[0067]
The manufacturing method of the crawl 100 further includes the step of laying the surface member 9 to be flush with the frame body 3 on the inner peripheral side of the frame body 3. According to this method, the bottom net 1 can be developed on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3 regardless of an environment of a manufacturing site of the crawl 100. That is, the manufacturing site of the crawl 100 can be placed on the sea.
The manufacturing method of the crawl 100 further includes the step of laying the surface member 9 to be flush with the frame body 3 on the inner peripheral side of the frame body 3. According to this method, the bottom net 1 can be developed on the inner peripheral side of the frame body 3 so as to be flush with the frame body 3 regardless of an environment of a manufacturing site of the crawl 100. That is, the manufacturing site of the crawl 100 can be placed on the sea.
[0068]
The above step is as follows. That is, a plurality of wire rods (bridging wire rods 8a) are arranged and laid on the inner peripheral side of the frame body 3, and then, a plurality of other wires (bridging wire rods 8b) are arranged and laid on the inner peripheral side of the frame body 3 so as to be orthogonal to the wires (bridging wire rods 8a). According to this step, the surface member 9 is strengthened, and thus the state can be securely kept where the bottom net 1 is flush with the frame body 3 when the bottom net 1 is developed on the surface member 9, and other wires (bridging wire rods 8b) serve as a guiding mechanism for developing the bottom net 1.
The above step is as follows. That is, a plurality of wire rods (bridging wire rods 8a) are arranged and laid on the inner peripheral side of the frame body 3, and then, a plurality of other wires (bridging wire rods 8b) are arranged and laid on the inner peripheral side of the frame body 3 so as to be orthogonal to the wires (bridging wire rods 8a). According to this step, the surface member 9 is strengthened, and thus the state can be securely kept where the bottom net 1 is flush with the frame body 3 when the bottom net 1 is developed on the surface member 9, and other wires (bridging wire rods 8b) serve as a guiding mechanism for developing the bottom net 1.
[0069]
The manufacturing method of the crawl 100 further includes the step of providing the floating member 10 having the floating property for the seawater under the surface member 9. According to this method, the state can be more securely kept where the bottom net 1 is flush with the frame body 3.
The manufacturing method of the crawl 100 further includes the step of providing the floating member 10 having the floating property for the seawater under the surface member 9. According to this method, the state can be more securely kept where the bottom net 1 is flush with the frame body 3.
[0070]
A suitable embodiment of the present invention is described above. However, the above embodiment can be modified as follows and carried out.
A suitable embodiment of the present invention is described above. However, the above embodiment can be modified as follows and carried out.
[0071]
That is, for example, the crawl 100 may be manufactured not only on the sea but on land. In the case where the crawl 100 is manufactured on land, the step of using the surface member 9 and the floating member 10 is not always required.
Moreover, the crawl 100 manufactured on land may be lifted up by, for example, heavy machinery such as a crane, and carried to a predetermined place.
That is, for example, the crawl 100 may be manufactured not only on the sea but on land. In the case where the crawl 100 is manufactured on land, the step of using the surface member 9 and the floating member 10 is not always required.
Moreover, the crawl 100 manufactured on land may be lifted up by, for example, heavy machinery such as a crane, and carried to a predetermined place.
[0072]
The bottom net 1 and the side net 2 may be composed of metal such as iron or an iron alloy, in place of copper or a copper alloy.
The bottom net 1 and the side net 2 may be composed of metal such as iron or an iron alloy, in place of copper or a copper alloy.
[0073]
The frame body 3 may be composed of resin of polyethylene, polypropylene, polyester, nylon or FRP.
The frame body 3 may be composed of resin of polyethylene, polypropylene, polyester, nylon or FRP.
[0074]
The extending direction of the row wires a constituting the bottom net 1 is not limited.
The extending direction of the row wires a constituting the bottom net 1 is not limited.
[0075]
In terms of smooth manufacture of the crawl 100, preferably, temporary fastening is properly performed in fastening the bottom net 2 to the bottom net 1.
In terms of smooth manufacture of the crawl 100, preferably, temporary fastening is properly performed in fastening the bottom net 2 to the bottom net 1.
Claims (11)
1. A crawl comprising:
a bottom net;
a side net which is peripherally provided on the bottom net; and, a frame body which is arranged along the sea surface and to which an upper end of the side net is fastened, wherein the side net is constituted in a manner that row wires formed by bending and forming metallic wires each into a predetermined shape are arranged in a row and interlocked with each other, and the side net is attached to the bottom net and the frame body so that the plurality of row wires vertically extend when the crawl is in use.
a bottom net;
a side net which is peripherally provided on the bottom net; and, a frame body which is arranged along the sea surface and to which an upper end of the side net is fastened, wherein the side net is constituted in a manner that row wires formed by bending and forming metallic wires each into a predetermined shape are arranged in a row and interlocked with each other, and the side net is attached to the bottom net and the frame body so that the plurality of row wires vertically extend when the crawl is in use.
2. The crawl according to claim 1, wherein the side net is peripherally provided on the bottom net via a coil-shaped connecting member, and the side net, the bottom net and the connecting member are composed of the same metallic material.
3. The crawl according to claim 1 or 2, wherein the bottom net and the side net are composed of copper or copper alloy.
4. The crawl according to any one of claims 1 to 3, wherein an upper end of the side net is fastened to the frame body via an insulating member.
5. The crawl according to any one of claims 1 to 4, wherein the length of an outer peripheral part of the upper end of the side net to be fastened to the frame body is 50m or more.
6. The crawl according to any one of claims 1 to 5, wherein a fastening wire rod used in attaching the side net to the frame body is provided by at least two meshes of the net.
7. A manufacturing method of a crawl including a bottom net, a side net which is peripherally provided on the bottom net, and a frame body which is arranged along the sea surface and to which an upper end of the side net is fastened, comprising the steps of:
annularly connecting the side net to a peripheral edge of the bottom net which is in a state of being developed on an inner peripheral side of the frame body so as to be flush with the frame body; and, bending the side net in a direction orthogonal to an inner peripheral edge of the frame body so that the upper end of the side net is arranged along the inner peripheral edge of the frame body.
annularly connecting the side net to a peripheral edge of the bottom net which is in a state of being developed on an inner peripheral side of the frame body so as to be flush with the frame body; and, bending the side net in a direction orthogonal to an inner peripheral edge of the frame body so that the upper end of the side net is arranged along the inner peripheral edge of the frame body.
8. The manufacturing method according to claim 7, further comprising the step of fastening the upper end of the side net to the frame body before releasing a state where the bottom net is flush with the frame body.
9. The manufacturing method according to claim 7 or 8, further comprising the step of laying a surface member to be flush with the frame body on the inner peripheral side of the frame body.
10. A manufacturing method of a crawl, wherein, in the step of claim 9, wire rods are arranged and laid on the inner peripheral side of the frame body, and then, a plurality of other wire rods are arranged and laid on the inner peripheral side of the frame body so as to be orthogonal to the wire rods.
11. The manufacturing method according to claim 9 or 10, further comprising the step of providing a floating member having a floating property in response to seawater under the surface member.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006332345A JP2008142003A (en) | 2006-12-08 | 2006-12-08 | Fish preserve and method for making the same |
| JP2006-332345 | 2006-12-08 | ||
| PCT/JP2007/072799 WO2008069040A1 (en) | 2006-12-08 | 2007-11-27 | Fish preserve, and fish preserve manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2669265A1 true CA2669265A1 (en) | 2008-06-12 |
Family
ID=39491943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002669265A Abandoned CA2669265A1 (en) | 2006-12-08 | 2007-11-27 | Fish preserve, and fish preserve manufacturing method |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2008142003A (en) |
| AU (1) | AU2007330165A1 (en) |
| CA (1) | CA2669265A1 (en) |
| CL (1) | CL2007003521A1 (en) |
| WO (1) | WO2008069040A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012079186A1 (en) * | 2010-12-16 | 2012-06-21 | Ecosea Farming S.A. | Method for assembling and transporting square and circular cage-rafts used for farming and polyethylene flotation system for supporting rigid aquatic structures |
| WO2016190751A1 (en) * | 2015-05-22 | 2016-12-01 | Ullrich Machinery Company Limited | An edge finishing for a mesh |
| CN107530761A (en) * | 2015-05-22 | 2018-01-02 | 乌尔里希机械有限公司 | Edge suitable for net processes |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2008347375B2 (en) * | 2008-01-18 | 2013-04-04 | Nv Bekaert Sa | Aquaculture net with high-tensile steel wires |
| EP2765851A1 (en) * | 2011-10-13 | 2014-08-20 | NV Bekaert SA | Aquaculture net with walls with different wire direction |
| KR101999071B1 (en) * | 2018-12-19 | 2019-07-10 | 김건우 | Manufacturing method of cage net using the Copper alloy net |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5476199U (en) * | 1977-11-08 | 1979-05-30 | ||
| JPS59124473U (en) * | 1983-02-14 | 1984-08-22 | 長崎商事株式会社 | Aquaculture raw “su” |
| JPS61223148A (en) * | 1985-03-28 | 1986-10-03 | Mitsui Mining & Smelting Co Ltd | Corrosion resistant copper alloy for marine use |
| JPH06284837A (en) * | 1992-05-15 | 1994-10-11 | Shigenobu Ueno | Fish preserver for pisciculture |
| JP2004242617A (en) * | 2003-02-17 | 2004-09-02 | Jeitekkusu:Kk | Wire, wire net and crawl and method for producing the wire net |
-
2006
- 2006-12-08 JP JP2006332345A patent/JP2008142003A/en not_active Withdrawn
-
2007
- 2007-11-27 WO PCT/JP2007/072799 patent/WO2008069040A1/en active Application Filing
- 2007-11-27 CA CA002669265A patent/CA2669265A1/en not_active Abandoned
- 2007-11-27 AU AU2007330165A patent/AU2007330165A1/en not_active Abandoned
- 2007-12-05 CL CL200703521A patent/CL2007003521A1/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012079186A1 (en) * | 2010-12-16 | 2012-06-21 | Ecosea Farming S.A. | Method for assembling and transporting square and circular cage-rafts used for farming and polyethylene flotation system for supporting rigid aquatic structures |
| WO2016190751A1 (en) * | 2015-05-22 | 2016-12-01 | Ullrich Machinery Company Limited | An edge finishing for a mesh |
| AU2016267961B2 (en) * | 2015-05-22 | 2017-12-14 | UMC Innovation Limited | An edge finishing for a mesh |
| CN107530761A (en) * | 2015-05-22 | 2018-01-02 | 乌尔里希机械有限公司 | Edge suitable for net processes |
| US10194643B2 (en) | 2015-05-22 | 2019-02-05 | Ullrich Machinery Company Limited | Edge finishing for a mesh |
| CN107530761B (en) * | 2015-05-22 | 2019-10-08 | 乌尔里希机械有限公司 | Edge suitable for net processes |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008142003A (en) | 2008-06-26 |
| WO2008069040A1 (en) | 2008-06-12 |
| AU2007330165A1 (en) | 2008-06-12 |
| CL2007003521A1 (en) | 2008-04-04 |
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