JP2005253341A - Artificial fish bank based on water-permeable case containing shell - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shell-containing water-permeable case free from restriction on the material, etc., of the water-permeable body, easily producible at a low cost, and having high fish gathering effect and sufficient strength and provide an artificial fish bank produced by using the case. <P>SOLUTION: The water-permeable case 1 is composed of a frame 2 and tubes 3 held in the frame. The frame 2 is composed of a pair of case lids 210, 211 and a plurality of reinforcing angles 25 for the water-permeable body connecting the case lids with each other. The tubes 3 are surrounded with the multiple water-permeable body reinforcing frames 25 along the side face of the tube 3. The right and left openings of the tube 3 are positioned in the frame 2 in a state closed with two case lids 210, 211, and the tubes 3 are pressed against the water-permeable body reinforcing frame 25 from inside by the shells packed in the space surrounded by the tube 3 and two case lids 210, 211 and fixed in the frame 2. The invention further provides an artificial fish bank produced by using the water-permeable case. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a water-permeable case with shells, a fish collection panel using the same, a fish collection block using the same, and an artificial reef based on a water-permeable case with shells using the same.

  Artificial fish reefs that use discarded shells (such as scallop shells, akoya shells, etc.) are already well known. Usually, in order to enhance the fish collection effect and the reproduction effect (hereinafter referred to as fish collection effect), a plurality of shells stored in a water-permeable case are arranged in a panel shape, and an artificial fish reef is configured by using a plurality of these panels. For example, Patent Document 1 describes a water-permeable case in which shells are filled in a resin or metal unit case, and a reinforcing material such as steel is installed along the unit case, and an artificial fish reef using the case. ing.

  Further, Patent Document 2 basically uses a water-permeable case in which a metal mesh is used as a water-permeable surface and a metal reinforcing frame is attached to the crossing edge of the side surface, a fish collection panel using the water-permeable case, and the water-permeable case. Artificial fish reefs are described.

  The water-permeable case described in Patent Document 1 is not particularly limited with respect to the material and the like of the unit case used. Uses a net (metal mesh) made of net of thin iron wire, a net made of light and inexpensive plastic, etc. according to the required specifications. can do. Reinforcing materials are installed on the unit case for shape retention, which is a problem when using a metal mesh, and mechanical strength, which is a problem when using a net made of a plastic net. It is solved by being. However, it is not necessary to provide the reinforcing material directly on the unit case, but it is necessary to provide the reinforcing material on a fish reef frame or the like in which the unit case is stored. Moreover, since the unit case described in patent document 1 is a cylinder shape with which right and left were open | released, it is necessary to cover the opening part on either side. Therefore, it is necessary to form a fish collection panel or an artificial fish reef by sealing the left and right sides of the opening with mortar together with both ends of the reinforcing member in a state where the unit case is surrounded by the reinforcing member. For this reason, not only is the work complicated and the reef is difficult to reef, but the weight of the reef panels and the artificial reef is increased, and there is a problem in workability when installing as a reef.

  Moreover, the water-permeable case described in Patent Document 2 has a configuration in which the crossing edge of the water-permeable surface of the metal mesh is reinforced with a metal reinforcing frame, and the metal mesh is used as the water-permeable surface due to the presence of the metal reinforcing frame. Even in this case, it is possible to maintain a certain shape retaining property and mechanical strength. In addition, the metal reinforcing frame can be directly joined to the fish reef frame using means such as welding. Therefore, they are characterized by being easily reefed. However, in order to ensure sufficient shape retention and mechanical strength, it is necessary to provide a large number of joints by welding or the like between the metal mesh and the metal reinforcing frame, which takes time for manufacturing. In consideration of joining with the metal reinforcing frame, the material of the water flow surface is practically limited to metal, and a water flow body that meets the required specifications could not be used.

Japanese Patent Laid-Open No. 9-163894 (pages 3-4, FIGS. 4-5) Japanese Patent Laid-Open No. 2004-049042 (page 5, FIG. 7)

  The object of the present invention is not limited by the material and the like of the water-permeable body (corresponding to “unit case” in Patent Document 1 and “water-permeable surface” in Patent Document 2), and uses a water-permeable body that meets the required specifications. A shell-permeable water-permeable case that is simple and inexpensive to manufacture, has a high fish collection effect, etc., and has sufficient strength, a fish collection panel using the water-permeable case, and the water-permeable case An artificial fish reef based on the collected fish block and the water-permeable case is provided.

  In order to solve the above-mentioned problem, a water-permeable case containing shells, the water-permeable case includes a frame body and a cylindrical body held inside the frame body, the frame body includes two case lids and the case lid It consists of a plurality of water passage reinforcement frames that connect each other, the cylinder is surrounded by a plurality of water passage reinforcement frames, and the openings at both ends of the cylinder are closed by two case lids. It is located inside the frame in a state, and the cylinder is pressed against the water flow reinforcement frame from the inside by the shell packed in the space between the inside of the cylinder and the two case lids, and fixed inside the frame A water-permeable case with shells was made.

  The shell is packed in the space between the inside of the tube and the two case lids, and is pressed against the water-reinforcing body reinforcement frame from the inside and fixed inside the frame so that the water-permeable body is welded. Since the water-permeable case is fixed inside the frame without joining the frame to the frame, the water-permeable body containing shells using the water-permeable body that meets the required specifications is not subject to restrictions on the material of the water-permeable body. It becomes a case. For example, when a high fish collection effect or weight reduction is required, use a net with a high opening ratio formed by net processing of thin iron wire, and when weight reduction or cost reduction is required, it is made of resin. You can use the net. Also, as described later, using a net made of a rust-proof iron wire coated with a resin as a water-transmitting body, it is highly effective in collecting fish, lightweight and low-cost, but it can be left in the sea for a long time. An aqueous case can be formed.

  Moreover, since the cylinder is pressed against the water passage reinforcing frame from the inside and fixed inside the frame, the water passage is firmly fixed inside the frame while being reinforced by the frame. . Therefore, even when a net obtained by netting a thin iron wire inferior in shape retention is used, the strength of the water-permeable case with shells, particularly the strength against waves in the sea can be ensured.

  Furthermore, since the cylindrical body is surrounded by a plurality of water-permeable body reinforcing frames and the openings at both ends of the cylindrical body are closed by two case lids, the cylindrical body is formed when forming an artificial reef. It is not necessary to seal the opening of the body with mortar together with both ends of the reinforcing material. For this reason, it becomes a water-permeable case with a shell which is easy to work and easily fish.

  At this time, the cylindrical body is preferably a water-permeable case containing a shell formed by bending a net. By using a net with a high opening ratio using a thin iron wire or the like as a water flow body, the fish collection effect and the like are improved. Moreover, since a water-permeable body is formed only by bending a net | network, it becomes a water-permeable case with a shell easily and cheaply.

  The cylindrical body is formed by bending the net while leaving a lap portion with the other end portion at one end portion of the net, and all or a part of the overlapping portion between the wrap portion and the other end portion of the net is either It is also preferable to use a shell-containing water-permeable case that overlaps the water-permeable body reinforcing frame. Even if the mesh is deformed due to the pressure of the shell packed in the water permeable case, the lap part and the other end of the net overlap, so the shell will be water permeable case that the shell does not easily flow out from this overlapping part. . Moreover, it becomes a water-permeable case with a shell which a shell does not flow out more easily by setting it as the structure which the lap | wrap part overlaps with any reinforcement angle.

  The cylinder has a quadrilateral cross section, a plurality of water flow reinforcement frames are four inward angles, and the crossing edges of the side surfaces of the cylinder are fitted into the four inward angles, respectively. It is also preferable to use a water-permeable case. By adopting a configuration in which the cross edges of the net side surface of the cylindrical body are respectively fitted to four inward angles, the strength of the water-permeable case with shells, particularly the strength against waves, can be further improved. In addition, considering the fish collection effect and the like, sufficient strength can be ensured even when a net obtained by netting a thin iron wire with inferior shape retaining property is used as a water passage.

  It is also preferable that the cylindrical body is a shell-permeable water-permeable case formed by bending a net and forming a circular cross section. By using a net with a high opening ratio using a thin iron wire or the like as a water flow body, the fish collection effect and the like are improved. In addition, even if it is difficult to bend because the net is stiff, it is possible to form a cylindrical body with a circular cross-section only by bending the net, so the work is very simple and inexpensive to manufacture. It becomes a water-permeable case with shells.

  The cylindrical body is formed in a circular cross section by bending the net, leaving a lap portion with the other end portion at one end portion of the net, and all or part of the overlapping portion between the wrap portion and the other end portion of the net is formed. It is also preferable to use a shell-containing water-permeable case that overlaps with any water-permeable body reinforcing frame. Even if the mesh is deformed due to the pressure of the shell packed in the water permeable case, the lap part and the other end of the net overlap, so the shell will be water permeable case that the shell does not easily flow out from this overlapping part. . Moreover, it becomes a water-permeable case with a shell which the shell does not flow out more easily by adopting a configuration in which the wrap portion overlaps any one of the water-body reinforcing frames.

  The net is also preferably a water-permeable case containing a shell formed by netting a rust-proof iron wire. By using a net formed by netting a rust-proof iron wire, the corrosion resistance of the water-passing body is improved, and it is possible to meet the demand of leaving it in the sea for a long time. Furthermore, by using a thin rust-proof iron wire, it is possible to provide a highly water-permeable case such as a fish collection effect while meeting the requirement of leaving in the sea for a long time.

  The net is also preferably a water-permeable case with a shell formed by netting a resin-coated rust-proof iron wire. By using a net made of a rust-proof iron wire coated with resin, the corrosion resistance of the water-transmitting body is further improved, and it is possible to meet the demand of leaving it in the sea for a long time. Furthermore, by using a thin resin-coated rust-proof iron wire, it is possible to provide a highly water-permeable case such as a fish collection effect while meeting the requirement of leaving in the sea for a longer period of time.

  As a fish collection panel using the shelled water-permeable case, a fixing flange is provided at both ends of the shelled water-permeable case, and a plurality of shelled water-permeable cases are joined to a pair of metal mounting materials, respectively. A fish-collecting panel integrated with a metal mounting material in an erected state, and an artificial reef using a shell using the fish-collecting panel is an artificial reef using a shell made by arranging a large number of water-permeable cases with shells on the reef frame. The fish reef frame is made by joining metal structural materials to each other, and the metal fittings for the fish collection panel are joined to the metal structural materials for the fish reef frame, so that a large number of water-permeable cases are attached to the fish reef frame. The shell-made artificial fish reef is arranged.

  Thereby, since there is no restriction | limiting about the material of a water transmission body, etc., it can be set as the fish collection panel and seashell utilization artificial fish reef which match | required a required specification. In addition, since it is not necessary to seal with an mortar or the like when forming an artificial fish reef or the like, the work is simple and inexpensive, and an artificial fish reef using shells and shells is obtained. Furthermore, even when using a net with a high aperture ratio and a fine iron wire netting as the water flow body, the strength of the water-permeable case with shells, especially the strength against waves, can be secured, so the fish collection effect is high. In addition, a high-strength fish collection panel and a shell-based artificial reef can be obtained. In addition, by providing fixed flanges at both ends of the water-permeable case, and using the fixed flanges as a fish collection panel joined to a pair of metal mounting materials, a simple and high-strength fish collection panel and a shell-based artificial reef are obtained. be able to.

  On the other hand, as the fish collection block using the water-permeable case with shells, the fish body is a fish-collecting block in which the main body is integrally molded with concrete, and the water-permeable case with shells is held in the main body and placed on the construction site. The shell-containing water-permeable case is a fish collection block formed by shaping the outer shape of the main body so that the outside and the shell-containing water-permeable case are not in close contact with the mounting target surface, The artificial reef used was an artificial reef in which fish collection blocks were arranged in a horizontal direction.

  Thereby, since it does not receive a restriction | limiting about the material of a water flow body, etc., it can be set as the fish collection block and seashell utilization artificial reef which match | required a required specification. In addition, even when using a net with a high opening ratio and a fine iron wire net processed as the water flow body, the strength of the water-permeable case with shells, particularly the strength against waves, can be secured, so the fish collection effect etc. It can be a high and high strength fish collection block and a shell-based artificial reef. Furthermore, by making the main body part into a fish collection block that is integrally formed of concrete, it is possible to provide a fish collection block and a shell-based artificial fish reef that can be installed on the beach, rivers and shallows.

  In order to maintain a natural ecosystem cycle, the fishermen themselves can participate in projects that effectively use shellfish shells for the purpose of improving the fishing ground environment and supplying safe and secure food. As a method of this, there is no restriction on the material of the water transmission body, it is possible to use a water transmission body that meets the required specifications, and it is easy to manufacture, inexpensive, and has a high fish collection effect while ensuring sufficient strength. A shell-containing water-permeable case for shell-based artificial reef, a fish collection panel using the water-permeable case, a fish collection block using the water-permeable case, and an artificial fish reef based on the water-permeable case It becomes possible.

  Hereinafter, a water-permeable case, a fish collection panel, a fish collection block, and an artificial reef of the present invention will be described in detail based on the drawings. 1 is a front view of a water-permeable case with a shell, FIG. 2 is an exploded perspective view of the water-permeable case, FIG. 3 is a perspective view with the other case lid removed, and FIG. FIG. 5 is a plan view of a net used in the water-permeable case of FIGS. 1 to 4, and FIG. 6 is an enlarged cross-sectional view of FIG. 1 viewed from the direction XX ′. 7 is an enlarged cross-sectional view of part P in FIG. 6, FIG. 8 is a cross-sectional view showing an example of a net used in the water-permeable case, FIG. 9 is an enlarged cross-sectional view of part Q in FIG. FIG. 11 is a perspective view showing a second alternative example of the shell-containing water-permeable case, FIG. 12 is a perspective view of a fish collection panel using the water-permeable case, and FIG. Fig. 14 is a perspective view of an artificial reef using a shell made of laminated panels, Fig. 14 is a perspective view of a larger artificial reef using a shell, and Fig. 15 is a water-permeable case. FIG. 16 is an exploded perspective view of a water passage case as a first application example of the present invention, and FIG. 17 is a perspective view of a water case with shells as a first application example of the present invention. 18 is an exploded perspective view of a water-permeable case with shells using the water-permeable case with shells of FIG. 17, and FIG. 19 is an exploded perspective view of a water-permeable case with shells as a second application example of the present invention.

  As shown in FIGS. 1 and 2, the water-permeable case 1 includes a frame body 2 including two case lids 210 and 211 and four reinforcing angle reinforcements 25 as water-permeable body reinforcing frames, and a cylindrical body 3. The case lids 210 and 211 include lid bodies 220 and 221, fixing flanges 230 and 231, and reinforcing flanges 240 and 241.

  The lid bodies 220 and 221 of the case lids 210 and 211 are quadrilaterals with a size that covers the openings 330 and 331 in accordance with the shape of the openings 330 and 331 of the cylindrical body 3. The lid main bodies 220 and 221 are provided with fixing flanges 230 and 231 having a quadrilateral cross-sectional shape so as to protrude toward the outside of the water-permeable case 1. Four reinforcing flanges 240 and 241 are provided on the surfaces of the lid main bodies 220 and 221 opposite to the fixed flange mounting surfaces. The four reinforcing flanges 240 and 241 are respectively provided at positions where the four end faces of the openings 330 and 331 of the cylindrical body 3 having a quadrilateral cross section are reinforced from the outside.

  In the present embodiment, the fixing flanges 230 and 231 protruding toward the outside of the water-permeable case 1 have a quadrilateral cross section, but are not limited thereto. For example, a fixing flange having a triangular cross section or a circular cross section may be provided. However, as will be described later, when the water permeable case 1 is attached to the metal attachment member 41 as a fish collection panel, it is advantageous that the contact area with the metal attachment member 41 is large. Therefore, it is preferable that the fixing flanges 230 and 231 have a polygonal cross section such as a triangular cross section or a quadrilateral cross section.

  In the present embodiment, the fixing flanges 230 and 231 having a quadrilateral cross section are provided so that each side of the quadrilateral cross section has an angle of 45 degrees with the four water flow surfaces 34 of the shell-containing water-permeable case 1 having a quadrilateral cross section. However, it is not limited to this. For example, as shown in FIG. 4, the fixed flanges 232 and 233 having a quadrangular cross section may be configured such that each side of the quadrangular cross section is parallel to the four water-permeable surfaces 34 of the shell-containing water-permeable case 1 having a quadrangular cross section. However, considering the fish collection effect, etc., the fixed flanges 232 and 233 having a quadrilateral cross section are at an angle of 45 degrees with each of the four water flow surfaces 34 of the shell-containing water-permeable case 1 having a quadrilateral cross section. It is preferable to provide in. This is because, when the fish is reefed, the projected area of the water permeable case 1 on the sea surface increases, so that algae can be easily propagated and the fish collection effect and the like are improved.

  Generally, the larger the aperture ratio of the water flow surface 34, the better the fish collection effect and the like. This is because infants and small fish easily enter and exit the shell-containing water-permeable case 1. In addition, the algae can easily settle on shells and the like and function as an algae basin, so that more fish are gathered by the propagated algae. The surface of the algae is inhabited by small crustaceans, small fish such as polychaetes, and prey preferred by infants. Some fish feed on algae, and shellfish such as abalone and turban shell are also important feeds. In the space and surface of the shell in the water permeable case 1, small organisms that inhabit algae inhabit at or above the algae. In addition, the greater the projected area of the water flow surface 34 onto the seawater surface, the better the fish collection effect, etc., and the algae will be easier to lay down by shells etc. and at the same time it will be easier to breed, and more fish will be caught by the propagated algae. Because they gather.

  In the present embodiment, the four reinforcing flanges 240 and 241 are provided on the surface opposite to the mounting surface of the fixing flanges 230 and 231 of the lid main bodies 220 and 221, respectively. However, the present invention is not limited to this, and the reinforcing flanges 240 and 241 may not be provided. . This is because when the shell is large and thick, the shell is less likely to flow out from the contact portion between the end surface of the cylinder 3 and the lid bodies 220 and 221 of the case lids 210 and 211 without providing the reinforcing collars 240 and 241. . When the reinforcing collars 240 and 241 are not provided, the length of the cylindrical body 3 is preferably equal to the length of the reinforcing angle 25. This is because a gap is formed between the end face of the cylindrical body 3 and the lid main bodies 220 and 221, and the shell is prevented from flowing out from the gap.

  In order to completely prevent the shell from flowing out from the gap between the end face of the cylindrical body 3 and the lid body 220, 221 when a small shell or a thin shell is used, the fixing flanges 230, 231 of the lid body 220, 221 are attached. It is preferable to provide reinforcing collars 240 and 241 having a size that covers the gap between both end surfaces of the cylinder 3 and the lid main bodies 220 and 221 on the surface opposite to the surface. Further, as will be described later, the reinforcing collars 240 and 241 also have a role of positioning when the reinforcing angle 25 is fixed to the lid bodies 220 and 221 of the case lids 210 and 211. Also in this respect, it is preferable that the reinforcing collars 240 and 241 are provided. When the reinforcing collars 240 and 241 are provided, the length of the cylindrical body 3 may be the same as the length of the reinforcing angle 25 or may be slightly shortened as shown in FIG. If it is shortened, the area of the net used can be reduced.

  The four reinforcing angles 25 are inward angles, and the length thereof is the same as or slightly longer than the length of the cylindrical body 3 as described above. As shown in FIGS. 6 and 7, the reinforcing angle 25 is a reinforcing body in which the apex portion of the end face in the longitudinal direction of the reinforcing angle 25 is adjacent to the surface of the lid body 221 to which the reinforcing flange 241 is attached. The lid body 221 is inserted between the flanges 241 (there are four locations in the present embodiment) from the inside so that both end portions of one end surface in the longitudinal direction of the reinforcing angle 25 are hooked to the adjacent reinforcing flanges 241 respectively. It is installed upright. As the attaching means, it is possible to weld the reinforcing angle 25 and the reinforcing flange 241 or the like.

  Any material of any thickness can be used for the lid bodies 220 and 221, the fixing flanges 230 and 231, the four reinforcing angles 25, and the four reinforcing flanges 240 and 241. However, considering the availability of materials, workability, strength in seawater, and corrosion resistance, a steel sheet having a thickness of about several tens of millimeters or more is preferable.

  The cylinder 3 is formed by forming a net 31 obtained by netting a resin-coated rust-proof iron wire 32 into a cylindrical shape having a quadrangular cross section. In the present embodiment, a quadrilateral net 31 having a predetermined size is formed by bending as shown in FIG. Specifically, the net 31 is bent at four places in the same direction so as to form four straight portions as the water-permeable surface 34, leaving the lap portion 313 at one end side and the other end side (R in FIG. 5). Part 314) The cylindrical body 3 is formed. 6 and 7, the wrap portion 313 formed on one end surface of the net 31 is connected to the other end portion of the net 31 from one end surface portion of the four end surfaces of the cylinder 3 having a quadrilateral cross section. overlapping.

  The length L of the wrap portion 313 is preferably 1 to 20 cm. If the length of the wrap portion 313 is short, the overlapped portion between the wrap portion 313 and the other end of the net 31 may open due to the pressure of the packed shell, and the shell may flow out from there. Conversely, if the length of the wrap portion 313 is long, not only will the material be wasted, but the aperture ratio may be reduced at the overlapping portion of the wrap portion 313 and the net 31, and the fish collection effect and the like may be reduced. . The length of the wrap portion 313 is more preferably 2 to 10 cm.

  In the present embodiment, the net 31 constituting the cylindrical body 3 is formed by netting a resin-coated rust-proof iron wire 32, but is not limited thereto. For example, a rust-proof plated iron wire, a punching metal, an expanded metal, a reinforcing bar mesh, etc. can be used. However, considering cost merit, fish collection effect, weight reduction, and the like, the resin-coated rust-proof iron wire 32 as in the present embodiment is preferable. When punched metal or expanded metal is used, the net opening ratio is low, and the fish collection effect and the like are low. In addition, when used in fish reefs and left in the sea for a long time, corrosion occurs, and the net may be broken by the influence of waves in the sea. When a net obtained by netting a rust-proof plated iron wire is used, the ratio of the opening is high, and the fish collection effect and the like are high. Corrosion resistance is also improved due to rust prevention processing, but corrosion may occur if left in the sea for a long period of several decades, and the net may be broken in places where the flow of seawater is intense. is there.

  In order to prevent the net from being broken for a long period of several decades even in an environment where the flow of seawater is intense, a thick anti-corrosion plated iron wire or reinforcing steel mesh may be used. However, when these are used, the weight of the shell-containing water-permeable case 1 increases. Further, not only is the bending process difficult, but the aperture ratio of the mesh is reduced, and the fish collection effect and the like are significantly reduced. Therefore, it is preferable to use a net using a resin-coated rust-proof iron wire that is lightweight, excellent in corrosivity, and has a high fish collection effect.

  As rust prevention processing, processing such as galvanization is possible. As the resin for covering the rust-proof iron wire 323, a thermoplastic resin is preferable in consideration of the point that it can follow the bending of the water-permeable body. Among these, it is preferable to use a thermoplastic polyester resin, a vinyl chloride resin, or a polyethylene resin. High density polyethylene resin is more preferable in consideration of environmental consideration and water resistance. In order to maintain the rust prevention effect for a long period of time, it is also preferable to bond the rust prevention iron wire 323 and the resin coating 324 with an adhesive.

  Further, the size of the opening of the net 31 is preferably changed according to the type of shells packed in the water-permeable case 1. If the size of the opening is too small, the opening ratio of the cylinder 3 is lowered, and the fish collection effect and the like are lowered. Conversely, if the size of the opening is too large, the shell will flow out of the opening. Depending on the shell, even if it does not flow out when the fish reef is installed, it may be left in the seawater for a long time, so that the shell is cracked and crushed, and the fragment may flow out from the opening. Depending on the type of shellfish, the size and hardness of the shell will vary, so adopting the size of the opening of the net 31 tailored to each shell will ensure a high fish collection effect, etc. A structure in which the shell does not easily flow out can be obtained. When the opening is approximately square, the length of one side of the opening of the net 31 is 1-4 cm when using oyster shells, 2-5 cm when using Akoya shells, and scallop shells are used. In this case, 3 to 8 cm is preferable.

  The net 31 can be a plain weave made of resin-coated rust-proof iron wire or the like. When using the resin-coated rust-proof iron wire 32, as shown in FIGS. 8 and 9, after making a plain weave at a predetermined pitch, the resin-coated rust-proof iron wire 32 is vertically oriented with respect to the intersection of the resin-coated rust-proof iron wires 32 It is preferable to use a crimped wire net 31 in which a rust-proof iron wire 32 at both ends of the intersection is pressed from the same direction as the overlapping direction while applying pressure from the point of view. Since the resin coatings 324 of the resin-coated rust-proofing iron wires 32 bite each other, displacement between the resin-coated rust-proofing iron wires 32 is unlikely to occur. Therefore, the possibility that the opening of the net 31 expands with time due to the pressure of the packed shells and the shells flow out therefrom can be reduced.

  As shown in FIGS. 2, 6, and 7, one opening 331 of the cylindrical body 3 is in contact with the surface of the one case lid main body 221, and four intersecting edges of the four side surfaces of the cylindrical body 3 are four. The cylindrical body 3 is fitted between the water body reinforcement angles 25 so as to abut against the two water body reinforcement angles 25, respectively. After that, as shown in FIG. 3, the shell is packed into the water passage through the opening 330 of the cylinder 3. The shell is stuffed so that the shell has an amount enough to push the tube 3 from the inside of the tube 3 toward the water body reinforcement angle 25.

  Finally, the opening 330 of the water-filled body filled with shells is covered with the other case lid 210. The apex portions of the end surfaces of the other end portions in the longitudinal direction of the four reinforcing angles 25 surrounding the cylindrical body 3 are respectively located between the adjacent reinforcing collars 240 of the case lid 210 (there are four locations in the present embodiment). The four angles 25 are attached to the lid main body 221 so that both end portions of the end surfaces of the other end portions in the longitudinal direction of the reinforcing angles 25 are caught by the adjacent reinforcing collars 240. Then, the four reinforcing angles 25 and the reinforcing collar 240 of the case lid 210 are joined by welding or the like to complete the shelled water-permeable case 1 for fish reef.

  As a shell feeding method, one opening 331 of the cylinder 3 is in contact with the surface of one case lid main body 221, and the crossing edges of the four side surfaces of the cylinder 3 are formed into four water passage reinforcement angles 25. With the tubular body 3 fitted between the water body reinforcement angles 25 so as to contact each other, waste shells that are no longer needed after being installed at a fishery processing site or the like with the opening 330 facing up are sequentially added. It is possible. The cylinder 3 itself is very light because it uses a net 31 made of a resin-coated rust-proof iron wire 32. Moreover, since it has a cylindrical shape with a square cross section, the installation location is not required. Therefore, it can be easily installed at a fishery processing site. When it is installed at a fish processing site and the shell is full, the opening 330 is closed with the other case lid 210 as described above. If used in this way, it is not necessary to transfer the waste shells generated at the fish processing site into the water body, which is very efficient.

  In the above embodiment, the net 31 obtained by bending the net 31 obtained by netting the resin-coated anticorrosive iron wire 32 is used to form the cylinder 3 having a quadrangular cross section, but the bending process of the net 31 is omitted. Then, if you want to manufacture a water-permeable case with shells more easily, bend the net 31 that has been net-processed with a resin-coated rust-proof iron wire 32 and form a cylindrical section with a circular cross-section as shown in FIGS. The cylindrical body 30 formed in the above may be used.

  As shown in FIGS. 10 and 11, the lid bodies 222 and 223 of the case lids 212 and 213 have a circular shape with a size that covers the openings 332 and 333 according to the shape of the openings 332 and 333 of the cylindrical body 30. The reinforcing collars 242 and 243 have a cylindrical shape with a size in which the circular end faces of the openings 332 and 333 of the cylindrical body 30 having a circular cross section are fitted inside, and the circular shapes of the openings 332 and 333 of the cylindrical body 30 having a circular cross section. The lid main bodies 222 and 223 are provided so as to reinforce the end face from the outside.

  The water passage reinforcing plate 26 as the four water passage reinforcing frames has a long plate shape. Then, as shown in FIG. 10, the four water passage reinforcing plates 26 are attached to the lid body 223 in an upright state by fixing one end portion thereof to the outer surface of the reinforcing flange 243. Although the water passage reinforcing ring 27 is fixed to the central portion of the four water passage reinforcing plates 26, the water passage reinforcing ring 27 may not be provided. However, in order to further improve the strength of the shell-containing water-permeable case 10, it is preferable to provide the water-permeable body reinforcing ring 27.

  Then, the cylinder 30 is fitted between the four water passage reinforcing plates 26. Thereafter, after filling the shell through the opening 333 of the cylindrical body 30, the opening 333 of the water-filled body filled with the shell is covered with the other case lid 212, and the water-passage reinforcing plate 26 The water-permeable case 10 is completed by fixing the other end portion and the reinforcing collar 242 of the case lid 212 by welding or the like.

  FIG. 12 shows an example of a fish collection panel using the water-permeable case 1 of the present invention. The fish collecting panel 4 has three water permeable cases 1 on the upper surface and two water permeable cases 1 on the lower surface of the metal mounting member 41 made of a pair (two) of square steel pipes, and is permeable to the metal mounting material 41 in a staggered relationship. The case 1 is joined. The fish collection panel 4 welds the metal attachment member 41 which is a square steel pipe and the fixing flanges 230 and 231 of the fish collection panel 4, thereby integrating the water permeable cases 1 and the metal attachment member 41.

  It is preferable that the water-permeable case in the fish collection panel 4 is sufficiently filled with seawater in the shells filled with each. For this reason, in this embodiment, the water permeable cases 1 are separated from each other, the surface area of each water permeable case is made as large as possible, and a water flow area is formed between the water permeable cases so as not to disturb the flow of seawater. ing. Moreover, it is preferable to join the water permeable case 1 to the metal attachment member 41 in a staggered relationship as in this embodiment. This is because the projected area of the water flow surface 34 on the seawater surface is increased at the same time that the flow of seawater is not hindered, and the fish collection effect and the like are improved. Moreover, it is also preferable to attach the water-permeable case 1 at 45 degrees as in this embodiment. This is because the flow of seawater is not hindered, and at the same time, the projected area of the water flow surface 34 onto the seawater surface becomes larger, and the fish collection effect and the like are further improved.

  The above-mentioned fish collection panel 4 is a unit component (unit) for manufacturing a shell-based artificial fish reef to the last, mainly small fish and infants that are important food for fish, and small crustaceans that are used as food for these fish. It constitutes a part that exerts a breeding effect such as polychaetes. Such a fish collection panel can be attached to a separately prepared fish reef frame to provide a simple high-rise shell-based artificial reef. As a basic configuration, a simple high-rise shell-based artificial reef shown in FIG. 13 can be shown.

  This simple high-rise shell-made artificial reef 5 has metal vertical angle members 52 (longitudinal metal structural members) erected at each corner of a metal base 51 incorporating H steel materials on four sides. The upper ends of the vertical angle members 52 are connected to each other by a metal horizontal angle member 53 (a metal structure member in the horizontal direction) to constitute a fish reef frame. Here, the interval between the metal vertical angle members 52 is equal to the length of the metal mounting member 41 of the fish collection panel 4, and the metal auxiliary auxiliary angle member 54 is installed at an arbitrary height in the metal vertical angle member 52. A plurality of fish collection panels 4 are laminated in multiple stages by welding the end of the metal attachment member 41 for each fish collection panel to the metal auxiliary auxiliary angle member 54 by welding. The end portion of the metal attachment member 41 may be directly joined to the metal vertical angle member 52, and the fish collection panel 4 may be attached in the vertical direction.

  Since the metal base 51, the metal vertical angle member 52, the metal auxiliary angle member 54, and each fish collection panel 4 are integrated with each other by welding, this simple high-rise shell-made artificial reef 5 is an underwater structure. Boasts high structural strength. Therefore, if this simple high-rise type artificial shell reef 5 using shells is enlarged as a unit, a larger artificial shell reef using shells can be manufactured. In the example shown in FIG. 14, a metal vertical angle member 62 is erected at the intersection of each H steel member of a metal base 61 in which H steel members are assembled in a grid shape in five rows and columns, and the upper end of each metal vertical angle member 62 Are connected to each other by a metal horizontal angle member 63 to form a fish reef frame body, and the fish collection panels 4 each having two tiers as a set are arranged in 3 × 3 pairs in a horizontal plane every other row.

  The enlarging fish reef frame forms a complicated internal structure in which the metal vertical and horizontal angle members 62 and 63 and the metal auxiliary angle member 64 are complicated. Since the shells filled in the water permeable case 1 for each fish collection panel 4 are scattered in the fish reef frame, it is possible to provide a vast habitat that is preferable for aquatic organisms. Thus, the shell-made artificial fish reef 6 according to the present embodiment is not a mere enlargement as an underwater structure, but can enhance fish collection or breeding effects. Moreover, even if it is a fish reef frame of a complicated structure, since each fish collection panel 4 is easy to attach, the shell-made artificial fish reef 6 of the present invention can suppress an increase in manufacturing cost and improve the fish collection or breeding effect. Can be realized at low cost.

  On the other hand, the shell-based artificial reef 6 is difficult to install in the rivers and shallows at the beach. This problem can be solved by using a shell-containing water-permeable case 1 as a fish collection block in which the main body is integrally formed of concrete. FIG. 15 shows a fish collection block 7 using the shell-containing water-permeable case 1 of the present invention. On the inner peripheral surface of the main body portion 71 of the fish collection block 7, five water-permeable cases 1 are installed at substantially equal intervals, and the main body portion 71 and the water-permeable case 1 are integrated.

  It is preferable that the water-permeable case 1 in the fish collection block 7 is sufficiently filled with seawater. For this reason, in this embodiment, the water permeable cases 1 are separated from each other, the surface area of each water permeable case 1 is made as large as possible, and a water flow area is formed between the water permeable cases 1 so as not to disturb the flow of seawater. I am doing so. Moreover, it is also preferable to attach the water-permeable case 1 at 45 degrees as in this embodiment. This is because the flow of seawater is not hindered, and at the same time, the projected area of the water flow surface 34 onto the seawater surface becomes larger, and the fish collection effect and the like are further improved.

  By arranging a plurality of the fish collection blocks 7 in the horizontal direction, an artificial fish reef that can be installed on a river and a shallow water can be obtained.

  In the present invention, the cylindrical body 3 is fitted into a frame body to form a shell-containing water-permeable case 1, but as an application example of the present invention, a water-permeable body case is particularly used when left in calm seawater. A shell-containing water passage case in which shells are packed inside may be a shell-containing water passage case made of a net of a rust-proof iron wire coated with a resin. The water-permeable body case is a case constituted by a water-permeable body, and means a case where there is no frame or the like other than the water-permeable body.

  That is, as shown in FIG. 17, the shell-containing water passage case 35 is submerged directly in the sea without being fitted into the frame. Explaining in detail, as shown in Fig. 16, prepare two two-sided resin-coated rust-proof iron wire nets bent about 90 degrees from the center (81,82). They are connected to form a cylinder with a quadrilateral cross section. As shown in FIG. 5, a water passage body formed by bending a net of a resin-coated rust-proof iron wire into a cylindrical shape with a square cross section may be used. Then, one end is closed with a square net 83 that fits the opening. A shell is put in from the opening at the other end, and then the other end is closed by a square net 84 that fits the opening, thereby completing the water-contained water case 35 with a shell. In this state, it sinks directly into the sea.

  Specifically, a square net 83 is used to close the opening at one end of a water passage having a square cross section (hereinafter referred to as an empty water passage case), with the other end opening facing upward. Installed at the processing site. Then, waste shells that are no longer needed are sequentially introduced from the opening. The empty water passage case is very light because it uses a mesh made of resin-coated rust-proof iron wire. In addition, since it has a quadrangular cross section, the installation area is small. Therefore, the empty water passage case used in the present embodiment can be easily installed at a fishery processing site or the like. It is installed at the fishery processing site, and when the shell is full, the opening of the empty water passage case is closed with a quadrilateral net 84. If it uses in this way, the operation | work which transfers the waste shells in a fishery processing field etc. to a water body becomes unnecessary, and it is very efficient. Further, after the opening is closed, the discarded shell does not spill, and the water-contained water case 35 containing the shell can be transported in a tilted state, which makes handling very easy.

  Various connecting means can be used for connecting the nets. If it is made of metal, welding or the like is possible. When a rust-proof iron wire coated with resin is used as in this embodiment, it cannot be connected by welding, so it is conceivable that the openings of the nets to be connected are tied together with, for example, a resin rope. . In this embodiment, a resin band is used.

  As shown in FIG. 18, it is also possible to fit the shell-containing water passage case 35 of FIG. 17 into the frame so as to form the fish collection panel 4, the fish collection block 7, and the artificial reefs 5 and 6 described above. Since the shell-containing water passage case 35 is fitted into the frame, the strength of the shell-containing water passage case 36 is supplemented, so that it can be installed in seawater with rough waves.

  In addition, as shown in FIG. 19, one end of a cylindrical body 85 formed by bending a net obtained by netting a resin-coated anticorrosive iron wire and having a circular cross section is formed with a circular net 86 that fits the opening. After closing, the shell is introduced from the opening at the other end, and then the other end is closed with a circular net 87 that fits the opening to produce the shell-containing water passage case 36. The water shell case 36 containing the shell is inserted between the water body reinforcing plates 26 and inserted into the water body reinforcing ring 27, and the fish collection panel 4, the fish collection block 7 and the shell-made artificial reefs 5, 6 It is also possible to do. There is no need to bend the net 31 obtained by netting the resin-coated rust-proof iron wire 32, and a water-permeable case with a shell can be easily manufactured.

It is a front view of a water-permeable case with a shell. It is a disassembled perspective view of a water-permeable case. It is a perspective view of the state which removed the other case lid of the water-permeable case with a shell. It is a perspective view which shows the 1st another example of the water-permeable case containing a shell. It is a top view of the net | network used for the water-permeable case of FIGS. It is the expanded sectional view which looked at Drawing 1 from the direction of X-X '. It is an expanded sectional view of the P section of FIG. It is sectional drawing which shows an example of the net | network used for a water-permeable case. It is an expanded sectional view of the Q section of FIG. It is a disassembled perspective view which shows the 2nd another example of a water-permeable case. It is a perspective view which shows the 2nd another example of the water-permeable case containing a shell. It is a perspective view of the fish collection panel using a water-permeable case. It is a perspective view of the artificial fish reef using a shell made by stacking fish collection panels. It is a perspective view of a larger artificial shell reef using shells. It is a perspective view of the fish collection block using a water-permeable case. It is a disassembled perspective view of the water flow body case which is the 1st application example of this invention. It is a perspective view of a water-permeable body case with a shell as a first application example of the present invention. FIG. 18 is an exploded perspective view of a water-permeable case with a shell using the water-permeable case with a shell of FIG. It is a disassembled perspective view of the water-permeable body case with a shell which is the 2nd application example of this invention.

Explanation of symbols

1,10 water permeable case
2 Frame
210,211,212,213 Case lid
220,221,222,223 Lid body
230,231,232,233 fixed flange
240,241,242,243 Reinforcement collar
25 Reinforcement angle (reinforcement frame)
26 Reinforcement plate (reinforcement frame)
27 Reinforcement ring
3,30 cylinder
31 Net
313 Lap
314 R part
32 Resin-coated rust-proof iron wire
323 Anticorrosive iron wire
324 resin coating
330,331.332,333 opening
34 Water surface
35,36 Water body case
4 Fish collection panel
41 Metal mounting material
5 Simple high-rise shellfish reef
51 base
52 Vertical angle material
53 Horizontal angle material
54 Auxiliary angle material
6 Artificial fish reef using shells
61 base
62 Vertical angle material
63 Horizontal angle material
64 Auxiliary angle material
7 Fish collection block
71 Main unit
81,82,83,84,86,87 Net
85 cylinder
L Wrap length

Claims (12)

A water-permeable case with shells,
The water permeable case is composed of a frame body and a cylindrical body held inside the frame body,
The frame body is composed of two case lids and a plurality of water body reinforcing frames that connect the case lids to each other.
The cylindrical body is surrounded by a plurality of water-permeable body reinforcing frames, and the cylindrical body is positioned inside the frame body in a state where the openings at both ends of the cylindrical body are closed by two case lids,
A shell-containing water-permeable case in which a cylindrical body is pressed against a water-permeable body reinforcing frame from the inside by a shell packed in a space between the inside of the cylindrical body and two case lids and fixed inside the frame. The water-permeable case with a shell according to claim 1, wherein the cylindrical body is formed by bending a net. The cylindrical body is formed by bending the net while leaving a lap portion with the other end portion at one end portion of the net, and all or a part of the overlapping portion between the wrap portion and the other end portion of the net is either The water-permeable case with shells according to claim 1, which overlaps with the water-permeable body reinforcing frame. The cylinder has a quadrilateral cross section, a plurality of water passage reinforcing frames are four inward angles, and the cross edges of the net side of the cylinder are fitted into the four inward angles, respectively. 4. A water-permeable case containing shells according to claims 1 to 3. The water-permeable case with a shell according to claim 1, wherein the cylindrical body is formed by bending a net to have a circular cross section. The cylindrical body is formed in a circular cross section by bending the net, leaving a lap portion with the other end portion at one end portion of the net, and all or part of the overlapping portion between the wrap portion and the other end portion of the net is formed. The shell-containing water-permeable case according to claim 1, which overlaps with any one of the water-permeable body reinforcing frames. The water-permeable case with shells according to claim 2, wherein the net is formed by netting a rust-proof iron wire. The water-permeable case containing a shell according to claim 2, wherein the net is formed by netting a resin-coated rust-proof iron wire. A fixing flange is provided at both ends of the shell-containing water-permeable case according to any one of claims 1 to 8, and a plurality of shell-containing water-permeable cases are respectively constructed by joining a pair of metal mounting materials to the fixing flange. A fish collection panel integrated with a metal mounting material. 10. The artificial fish reef using shells in which a large number of water-permeable cases containing shells are arranged with respect to the fish reef frame, wherein the fish reef frame is formed by joining metal structural materials to each other, and the metal of the fish collection panel according to claim 9 An artificial reef using a shell made by joining a metal attachment material to a metal structural material of a fish reef frame and arranging a large number of water-permeable cases on the reef frame. A fish-collecting block in which the main body is integrally formed of concrete, the shell-containing water-permeable case according to any one of claims 1 to 8 is held in the main body, and when placed in a construction site, the water-permeable to shell A fish collection block formed by shaping the outer shape of the main body so that the case is not in close contact with the placement target surface and the outside and the shell-containing water-permeable case communicate with each other. An artificial fish reef in which the fish collection blocks according to claim 11 are arranged in a horizontal direction.

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