JP2013121319A - Frame for live-box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that a conventional frame for a live-box takes time for removing work of marine periphyton due to its structure for mounting a plurality of floats in a lower side of the frame for a live-box as a frame.SOLUTION: In the frame 4 for a live-box, a partial frame A41, a partial frame B42 and a partial frame C43 having a cross-sectional shape of a substantially circular shape with a plane surface 44 of a predetermined width on an upper surface and having a space divided into a floating part and a buoyancy adjustment part inside thereof are connected in a corridor shape to form an integral frame body, and a net is hung by a hanging tool 14 and an upper frame 15 on an inner side of the frame body.

Description

  The present invention relates to a ginger frame that surrounds marine products such as fish, shellfish, and seaweed for the purpose of growing temporarily or for a relatively long period of time.

  As a conventional example, there is one described in Patent Document 1, and a net is hung from a ginger frame formed by combining a main frame and a guide frame, and the water surface (hereinafter abbreviated as the sea surface) such as a sea surface or a lake surface. In order to float the sacrifice frame, a plurality of floats are provided below the sacrifice frame.

JP 2006-345792 A

  When a ginger frame and float are installed on the sea surface, shells typified by oysters, crustaceans typified by barnacles, seaweeds typified by rocks (hereinafter abbreviated as marine-adhering organisms) ) Adheres. When marine-adhering organisms attach to ginger frames and floats, the weight of marine-adhering organisms increases, making it difficult to float with float buoyancy, so fishermen using ginger frames and floats regularly remove marine-adhering organisms There is a need.

  Since the structure is such that a large number of floats (16 according to FIG. 1 of Patent Document 1) are attached to the lower side of the frame-shaped sacrifice frame, which is a thin metal pipe of Patent Document 1, each of the attached many Since each float has a lower surface and four side surfaces, the total surface area of many floats is large. For this reason, it has been necessary to perform the removal work of marine adhering organisms of a large number of floats on a large surface area. Further, considering the removal work of marine adhering organisms with a thin frame, there is a problem that complicated marine adhering organisms need to be removed within a wider range.

  Also, because it is divided into a cage frame and multiple floats, it is a skillful technique to assemble to meet the conditions such as supporting the weight of the suspended cage and floating on the sea surface, and at the same time withstanding the waves generated by natural conditions. In addition, there is a problem that it takes time for mastering the technique, which is difficult for unskilled workers.

  Furthermore, the ginger frame differs depending on the material used, but when it is made of a material that supports the weight of the net and has the strength to withstand the waves floating on the sea surface, the overall weight also becomes heavier. There was a problem that it was necessary to increase the number.

  In order to solve the above problems, the present invention takes the following technical means.

  The sacrifice frame of the first invention has a substantially circular cross-sectional shape having a plane with a predetermined width on the upper surface, and has a space partitioned into a floating portion and a buoyancy adjusting portion inside, the floating portion, the buoyancy adjusting portion, Is connected to the corridor to form an integral frame, and a net is suspended inside the frame.

  According to a second aspect of the present invention, in the first aspect of the present invention, the integral frame can be divided into a plurality of metal partial frames, and the cross-sectional sides of the partial frames are connected by flanges. It has become.

  The sacrifice frame according to a third aspect of the present invention is the first aspect or the second aspect, wherein a cover is provided on the surface of the integral frame.

  A sacrifice frame according to a fourth aspect of the present invention is the second aspect or the third aspect, wherein the floating portion is filled with a foamable resin.

  Having the technical means as described above has the following effects.

  According to the first aspect of the present invention, the upper surface has a substantially circular cross-sectional shape having a plane with a predetermined width, and has a space partitioned into a floating portion and a buoyancy adjusting portion inside. The floating portion and the buoyancy adjusting portion are By connecting in a corridor shape, it becomes an integral frame, and the net is suspended from the inside of the frame. Therefore, the sacrifice frame itself has a structure that doubles as a float, and the structure is simple. Therefore, it is easy to remove marine-adherent organisms.

  In addition, when the diameter of the float is the same as that of the float of the conventional example, the sacrifice frame itself also serves as a float, so that the volume becomes the same as that in which individual floats are connected without gaps, and the volume as a float is increased. And as a result, the overall buoyancy can be increased.

  At the same time, since the cross section is close to a circle, it is possible to make the internal volume close to the maximum when using materials of the same width, and when the internal volume becomes close to the maximum, the buoyancy is also close to the maximum. .

  In addition, since the structure of the sacrifice frame also serves as a float and the structure is simple, it is easy to assemble because there are few parts, and the material for obtaining the same buoyancy can be reduced, resulting in a reduction in man-hours and material costs. .

  According to the second invention, using the first invention, the integral frame can be divided into a plurality of metal partial frames, and are integrated by connecting the cross-sectional sides of the partial frames with flanges. Thus, even a non-skilled person can easily assemble and disassemble the sacrifice frame, and can ensure the strength of the frame.

  According to the third invention, using the first invention or the second invention, a cover is provided on the surface of the integral frame, so that marine-adhering organisms adhere to the cover, If the cover is removed when removing organisms, marine-adhering organisms can be removed at the same time.

  According to the fourth invention, the second invention or the third invention is used, and the inside of the floating portion is filled with a foamable resin, so that even if the outer wall of the floating portion is corroded or damaged, the sacrifice frame is It becomes difficult to lose buoyancy, and the sacrifice frame can be used for a long time.

It is a schematic diagram of the whole structure of the sacrifice frame which concerns on Example 1 of this invention. It is the top view (a) and front view (b) of the sacrifice frame which concern on Example 1 of this invention. It is AA sectional drawing of the sacrifice frame which concerns on Example 1 of this invention. It is BB sectional drawing of the sacrifice frame which concerns on Example 1 of this invention. It is the top view (a) and front view (b) of the sacrifice frame which concern on Example 2 of this invention. It is CC sectional drawing of the sacrifice frame which concerns on Example 2 of this invention. It is explanatory drawing about the partial frame A41 of the sacrifice frame which concerns on Example 3 of this invention. It is explanatory drawing about the partial frame B42 of the sacrifice frame which concerns on Example 3 of this invention. It is explanatory drawing about the partial frame C43 of the sacrifice frame which concerns on Example 3 of this invention.

  Embodiments for carrying out the invention will be specifically described with reference to the drawings.

  The overall configuration of the sacrifice according to the present invention will be described with reference to FIG. The sacrifice 1 is composed of a sacrifice frame 4 and a net 7. Each part of the sacrifice frame 4 is provided with a flange 12 which will be described later, and arm-like hanging tools 14 are attached to the upper surface side of the sacrifice frame 4 at predetermined intervals. An upper frame 15 is attached to the upper end of the hanging tool 14, and the upper frame 15 is held by the sacrifice frame 4 via the hanging tool 14. A net 7 is bound to the upper frame 15, whereby the net 7 is suspended from the sacrifice frame 4.

  The net 7 is a rectangular box-shaped net with a bottom made of synthetic resin or metal, taking into consideration the fish species to be cultivated and the cultivation period, and considering the cost-effectiveness of replacement and repair. . Although not illustrated and described, a square frame is provided at the bottom of the net 7, and a weight or a hook connected to the square frame via a rope or chain is attached. As a result, the rectangular box-shaped net with a bottom is installed in a state of being spread under the sea surface.

  The sacrifice frame 4 will be described with reference to FIG. The sacrifice frame 4 is configured in a state in which four sets of the combination of the partial frame A41, the partial frame B42, and the partial frame C43 are connected. The partial frame A41 is substantially L-shaped, to which flanges 12 are connected at both ends, and two hanging tools 14 are attached to the upper part thereof. The partial frame B42 is substantially I-shaped, and the flanges 12 are connected to both ends, and two hanging tools 14 are attached to the upper part thereof. The partial frame C43 is substantially I-shaped, and flanges 12 are connected to both ends, and one hanging tool 14 is attached to the upper part thereof.

  By connecting the flanges 12 of the partial frame A41, the partial frame B42, and the partial frame C43, the corridor-shaped sacrifice frame 4 whose overall shape is a square in plan view is formed. An upper frame 15 is attached to the tips of the plurality of hanging tools 14. Further, a plane portion 44 having a predetermined width is provided on the upper surface side of the partial frame A41, the partial frame B42, and the partial frame C43. The purpose of providing the flat portion 44 with a predetermined width is to allow fishermen and other workers to move to the cage frame 4 and work in a stable state when the cage frame 4 is installed in a state of floating on the sea surface. It is to do. Therefore, the predetermined width of the plane portion 44 is a width that allows a person to put his / her foot on and stabilize, although it varies depending on the diameters of the partial frame A41, the partial frame B42 and the partial frame C43. In addition, the valve | bulb 45 demonstrated later is attached to the plane part 44 of the partial frame C43.

  The internal structure of the sacrifice frame 4 will be described with reference to FIGS. FIG. 3 is a cross-sectional view taken along line AA in FIG. Therefore, although the cross section of the partial frame C43 is described, the cross sectional shape is basically the same in each part of the partial frame A41 and the partial frame B42 although there is a difference in the arrangement of members. The partial frame C43 is formed by rolling a steel plate, which is a flat plate, into a cylindrical shape, stopping the roll processing before it becomes completely cylindrical, so that the flat portion 44 remains on the upper surface side of the partial frame C43, and a cross section close to a circle. It is welded so as to form a substantially D-shaped cylinder. The reason why the flat portion 44 is provided is a scaffold for a person to put his / her foot as described above. Therefore, the flat portion 44 is not rolled so that the flat portion 44 is left, but is rolled into a cylinder that does not leave the flat portion. A method may be used in which a scaffolding flat plate is attached to the upper surface by welding or the like.

  The partial frame C43 is completed by welding the flange 12 to both ends of the cylinder having a substantially D-shaped cross section and welding the hanging tool 14 to the upper part. The steel plate is a rolled steel plate or a stainless steel plate, and an appropriate plate thickness is selected according to the required strength depending on the size of the sacrifice frame 4 and the diameter of the substantially D-shaped cylinder such as the partial frame A41. In addition, when selecting the material which does not have corrosion resistance in seawater, the surface of the material is plated or painted. A hanging tool 14 is attached to the upper part of the flat surface portion 44, and a hole 14 a for attaching the upper frame 15 is provided at the upper end of the hanging tool 14.

  The flange 12 is an annular plate having a thickness that can withstand the overall strength of the sacrifice frame 4. A plurality of holes are formed at equal intervals on a line connected by a circle passing through the substantially central portion of the annular plate of the flange 12, and a plurality of holes of each of the two facing flanges 12 are combined and a bolt is passed through the holes. By tightening with the nut 13, the two flanges 12 facing each other can be joined. Note that the diameter and number of holes formed in the flange 12 and the diameter and number of bolts and nuts 13 associated therewith are appropriately selected according to the strength of the entire sacrifice frame 4. In addition, a packing having a predetermined thickness of a synthetic rubber, a synthetic resin, or a natural material, which has elasticity and has airtightness and durability at the same time, is inserted between the two facing flanges 12. By connecting the partial frame A41, the partial frame B42, and the partial frame C43 via the flange 12, the internal space defined by the partial frame A41, the partial frame B42, and the partial frame C43 is also connected.

  A valve 45 that can be opened and closed in communication with the space inside the partial frame C43 is attached to one portion of the flat portion 22 of the partial frame C43, and a hole 46 through which the seawater 8 around the partial frame C43 enters and exits is provided at the bottom. Is provided. By opening the valve 45, the air 9 inside the partial frame C43 is discharged to the outside of the partial frame C43, and accordingly, the seawater 8 flows into the partial frame C43 from the hole 46. The partial frame A41 and the partial frame B42 are not provided with the valve 45 and the hole 46. One end of the valve 45 is connected to the partial frame C43, but the other end is provided with a screw or a quick joint, and can be easily connected to an air hose, piping, or the like. The reason why the valve 45 and the hole 46 are provided in the partial frame C43 is that the partial frame C43 is used as a buoyancy adjusting unit 22 described later.

  4 is a cross-sectional view taken along the line BB of FIG. 2 and illustrates the internal configuration of the sacrifice frame 4 in a plan view. A partition wall 16 is welded inside the cylindrical shape of the partial frame A41 and the partial frame B42 to partition the space inside the partial frame A41 and the partial frame B42. Due to the presence of the partition wall 16, when the partial frame A 41, the partial frame B 42, and the partial frame C 43 are connected to the flange 12 to form the corridor-shaped sacrifice frame 4, the interior of the sacrifice frame 4 has eight sections. It will be partitioned into chambers. A substantially L-shaped space in which the partial frame A41 and the partial frame B42 are connected becomes the floating portion 21. Further, a substantially I-shaped space in which the partial frame A41 and the partial frame B42 are connected to both ends of the partial frame C43 serves as the buoyancy adjusting unit 22.

  The floating portion 21 has a cylindrical outer wall having a substantially D-shaped cross section of the partial frame A41 and the partial frame B42 (see FIG. 3), and is manufactured to be an air chamber that can maintain airtightness by including the flange 12 and the partition wall 16. Has been. Therefore, the floating portion 21 on the sea surface functions as a part of the frame of the sacrifice frame 4 having strength for holding the net 7 and at the same time functions as a float for floating on the sea surface. Also have.

  The buoyancy adjusting unit 22 has a cylindrical outer wall having a substantially D-shaped cross section of the partial frame A41, the partial frame B42, and the partial frame C43 (see FIG. 3), and becomes a space that can be completely airtight by the flange 12 and the partition wall 16. The valve 45 is provided in the upper part of the partial frame C43 which comprises the buoyancy adjustment part 22, and the hole 46 is provided in the lower part (refer FIG. 3). Therefore, the buoyancy adjusting unit 22 on the sea surface functions as a part of the frame of the sacrifice frame 4 having strength for holding the net 7 and at the same time floats on the sea surface when the valve 45 is closed. It also has a function as a float for the purpose.

  Further, the buoyancy adjusting unit 22 opens the valve 45 (see FIG. 3) at the top of the hole 46 to release the air 9 inside the buoyancy adjusting unit 22, so that the seawater 8 enters the buoyancy adjusting unit 22 from the hole 46. Can be entered. Further, an air hose connected to a compressor (a pump capable of sending high-pressure air) is connected to the valve 45, and the valve 45 is opened to push high-pressure air into the buoyancy adjustment unit 22, The seawater 8 can be discharged from the hole 46 in the lower part of the buoyancy adjusting unit 22. As a result, the four buoyancy adjusting sections 22 have a function as a ballast tank for adjusting the buoyancy of the sacrifice frame 4 and at the same time, increase the amount of seawater 8 that has flowed into the four buoyancy adjusting sections 22. Then, if the weight of the whole sacrifice 1 is made larger than the buoyancy of the four floating portions 21, the sacrifice 1 can be submerged under the sea surface, so that the four buoyancy adjusting portions 22 are used as the floating tanks. The function of can also be demonstrated.

  In addition, the arrangement of the four floating portions 21 in the rectangular configuration of the sacrifice frame 4 is a point-symmetrical position about the center point of the sacrifice frame 4 in plan view. Similarly, the arrangement of the four buoyancy adjustment units 22 is also point-symmetrical about the center point of the sacrifice frame 4 in plan view. The four floating portions 21 and the four buoyancy adjusting portions 22 are arranged in point symmetry so that the balance of the whole sacrifice frame 4 when the sacrifice frame 4 is floated on the sea surface is adjusted to four buoyancy. This can be done easily by adjusting the amount of seawater in the section 22.

  In the sacrifice according to the present invention, the net 7 according to the first embodiment has a rectangular box shape. In the second embodiment, the sacrifice frame 5 is configured to suspend a cylindrical net with a bottom. The cylindrical net with a bottom is the same as the net 7 of the first embodiment except that the shape is the same. Further, since the flange 12 and the hanging tool 14 are the same, the same reference numerals are given and the description thereof is omitted.

  The sacrifice frame 5 will be described with reference to a plan view (a) and a front view (b) of FIG. The sacrifice frame 5 is configured by combining a partial frame A51, a partial frame B52, and a partial frame C53. The partial frame A51, the partial frame B52, and the partial frame C53 have a substantially "<" shape, and are respectively connected to the flanges 12 at both ends. Are almost the same shape, but whether or not the partition wall 16 is provided in the interior, and where the partition wall 16 is attached, the mounting position of the partition wall 16 is different.

  By connecting the flanges 12 of the partial frame A51, the partial frame B52, and the partial frame C53 to each other, the overall shape is 16-hexagonal. A corridor-shaped sacrifice frame 5 is formed. An upper frame 15 a is attached to the tips of the plurality of hanging tools 14. Further, the upper surface side of the partial frame A51, the partial frame B52, and the partial frame C53 has a flat portion 44 having a predetermined width. The purpose of providing the flat portion 44 with a predetermined width is to allow the sacrificial frame 5 to float on the sea surface and transfer it to the sacrificial frame 5 so that it can work in a stable state. Therefore, the predetermined width of the flat portion 44 is a width that allows a person to put his / her feet on and stabilize, although it varies depending on the diameters of the partial frame A51, the partial frame B52 and the partial frame C53.

  The cross-sectional shapes of the partial frame A51, the partial frame B52, and the partial frame C53 are basically the same as those in FIG. A valve 45 similar to that of the first embodiment is attached to the upper surface of one of the two partial frames C53 that are connected in succession, and the seawater 8 is placed at the bottom of one of the partial frames C53. A hole 46 for entering and exiting is provided (see FIG. 3). The valve 45 and the hole 46 are not provided in the partial frame A51 and the partial frame B52.

  FIG. 6 is a cross-sectional view taken along the line CC of FIG. 5 and illustrates the internal configuration of the sacrifice frame 5 in a plan view. The partial frame A51 is divided so that the partition wall 16 has a biased capacity, and the partial frame B52 is divided so that the partition wall 16 has almost the same capacity. The partition wall 16 is not provided in C53. Since the partition wall 16 is welded to the partial frame A51 and the partial frame B52 to partition the internal space, the sacrifice frame 5 in which the partial frame A51, the partial frame B52, and the partial frame C53 are connected by the flange 12 is divided into a plurality of spaces. It will be partitioned. A substantially arcuate space in which the partial frame A51 and the partial frame B52 are connected becomes the floating portion 21a. In addition, a substantially arcuate space in which two partial frames C53 are connected and the partial frame A51 is connected to one end and the partial frame B52 is connected to the other end is the buoyancy adjusting unit 22a.

  The floating portion 21a has a cylindrical outer wall having a substantially D-shaped cross section of the partial frame A51 and the partial frame B52 (see FIG. 3), and is manufactured to be an air chamber that can maintain airtightness by including the flange 12 and the partition wall 16. Has been. Therefore, the four floating portions 21a on the sea surface function as a part of the frame of the sacrifice frame 5 having the strength to hold the bottomed cylindrical net, and at the same time float on the sea surface. It also has a function as a float.

  The buoyancy adjusting unit 22a has a cylindrical outer wall having a substantially D-shaped cross section of the partial frame A51, the partial frame B52, and the partial frame C53 (see FIG. 3), and becomes a space that can be completely airtight by the flange 12 and the partition wall 16. The valve 45 is provided in one upper part of the partial frame C53 constituting the buoyancy adjusting unit 22 and the hole 46 is provided in one lower part of the partial frame C53 (see FIG. 3). Therefore, the four buoyancy adjusting portions 22a on the sea surface function as a part of the frame of the sacrifice frame 5 having a strength for holding a cylindrical net with a bottom, and at the same time close the valve 45. If it is, it also has a function as a float to float on the sea surface.

  In addition, the buoyancy adjustment unit 22a opens the valve 45 (see FIG. 3) at the upper part of the hole 46 to release the air 9 inside the buoyancy adjustment unit 22a, so that the seawater 8 enters the buoyancy adjustment unit 22a from the hole 46. Can be entered. Further, an air hose connected to the compressor is connected to the valve 45, the valve 45 is opened, and high-pressure air is pushed into the buoyancy adjuster 22a, so that the seawater 8 inside is placed in the hole 46 below the buoyancy adjuster 22a. Can be discharged from. As a result, the four buoyancy adjusters 22a function as ballast tanks for adjusting the buoyancy of the sacrifice frame 5, and at the same time, increase the amount of seawater 8 flowing into the four buoyancy adjusters 22a. Then, if the weight of the entire cage consisting of the ginger frame 5 and the bottomed cylindrical net is made larger than the buoyancy of the four floating portions 21a, the ginger frame 5 and the bottomed cylindrical net Since the whole sacrifice can be submerged under the sea surface, the four buoyancy adjusting portions 22a can also function as a floating tank.

  In addition, the arrangement of the four floating portions 21a in the hexagonal corridor-like configuration of the sacrifice frame 5 is point-symmetrical with respect to the center point of the sacrifice frame 5 in plan view. Similarly, the arrangement of the four buoyancy adjusting portions 22a is also point-symmetric with respect to the center point of the sacrifice frame 4 in plan view. By arranging the floating portion 21a and the buoyancy adjusting portion 22a symmetrically, the amount of seawater in the buoyancy adjusting portion 22a is adjusted to adjust the overall balance of the sacrifice frame 5 when the sacrifice frame 5 is floated on the sea surface. Easy to do.

  The third embodiment is a case where a cover is attached to the sacrifice frame 4 of the first embodiment, and the inside of the floating portion 21 is filled with a foamable resin. The description is omitted.

  The case where the cover 31 is attached to the partial frame A41 of the sacrifice frame 4 of Example 1 and the foamable resins 36 and 37 are filled will be described with reference to FIG. The cover 31 is placed on the partial frame A41 so as to cover the outer surface of the partial frame A41 from the lower part of the partial frame A41 toward the upper part. The cover 31 has a length corresponding to the total length when the partial frame A41 is extended, and has a substantially rectangular size obtained by subtracting the length of the width of the plane portion 44 from the circumferential length of the cylinder of the partial frame A41. The cover 31 is made of a synthetic resin such as polyethylene or polypropylene in the form of a sheet having a predetermined thickness. In order to increase the strength of the cover 31, a reinforcing material of synthetic fiber or natural fiber may be included. .

  The purpose of covering the partial frame A41 with the cover 31 is to prevent marine adhering organisms generated on the surface of the partial frame A41 in contact with seawater from directly attaching to the partial frame A41. As for the parts related to the service life such as the material of the cover 31 and the presence / absence of the thickness reinforcing material, it is assumed that the cover 31 is replaced at the time of repair. If it is to be repaired, it is sufficient to select the material that can withstand use on the sea for two years and the presence or absence of a thickness reinforcing material.

  The cover 31 is described as not covering the flat portion 44 of the partial frame A41. In many cases, the flat surface portion 44 is always on the sea surface, and it is relatively difficult for marine-adhering organisms to adhere to the flat surface portion 44, and because an operator or the like is placed on the flat surface portion 44, the cover 31 is easily slipped. This is the reason. Of course, it is better to cover the flat portion 44 with the cover 31 when there is no problem in the work or the like. Further, it is preferable to cover the flange portion 12 as well, but in that case, the partial frame A41 is not a single body. After the partial frame A41, the partial frame B42, and the partial frame C43 are assembled into the sacrifice frame 4, a cover is separately attached to the flange portion 12.

  As means for holding the cover 31 on the surface of the partial frame A41, a plurality of binding tools 32 are wound at right angles to the longitudinal direction of the partial frame A41. The tying member 32 is a tying band, preferably made of nylon or polypropylene, with a locking mechanism at one end, which simply ties the ends of a synthetic resin or natural material string together, welds them by heat, or ties the clasp metal fittings with cacimel or the like. The workability is improved by bundling with the use of. In addition, as another means for closely attaching the cover 31, it may be directly attached to the surface of the partial frame A41 using an adhesive that can be easily attached and detached, such as a silicon sealing material. In addition, as a method of giving the same effect as the cover 31, after applying a spray or a brush on the outer surface of the partial frame A41 in a liquid state, a predetermined thickness is obtained after a lapse of a predetermined time. A method of using a liquid synthetic resin or paint that is easy to peel off because the coating film becomes a coating film and has a certain strength.

  The foamable resins 36 and 37 are obtained by independently foaming a foamable resin having a volume that fits in the space inside the partial frame A41. The foamable resins 36 and 37 are inserted into the partial frame A41 in the order of the foamable resin 36 and the foamable resin 37 from the opening on the right side (right side in FIG. 7) of the partial frame A41. The foamable resins 36 and 37 are filled in A41. In addition, the foamable resin 36 is filled in a state in which it is pushed into the partition wall A41 up to the partition wall 16, and the foamable resin 37 is filled in a state in which the foamable resin 36 is pushed up to the place where the foamable resin 36 is attached.

  For example, the foamable resin is obtained by independently foaming a synthetic resin such as polyurethane, polystyrene, polyethylene, or polypropylene, and has a specific gravity of about 0.1 to 0.3. Is adjusted. The foamable resin 36 is an example in the case where an assembly of an appropriate size such as a so-called foamed polystyrene particle or lump obtained by foaming the above-described polyethylene is placed inside the partial frame A41. Moreover, about the foamable resin 37, the example in the case of carrying out the outside polystyrene molding to the magnitude | size match | combined with the space inside partial frame A41 is shown. As another example for attaching the foamable resins 36 and 37, a method in which a synthetic resin such as liquid polyethylene is independently foamed inside the partial frame A41 and molded as it is can be implemented.

  FIG. 8 shows a case where the cover 31 is attached to the partial frame B42 with a plurality of binding tools 32, and a foamable resin 38 is attached inside the partial frame B42. FIG. 9 illustrates a case where the cover 31 is attached to the partial frame C43. ing. About the cover 31 and the binding tool 32, since it is the same content as partial frame A41, description is abbreviate | omitted. The foamable resin 38 is different from the foamable resins 36 and 37 only in shape, and thus the description thereof is omitted. Further, the case where the cover and the foamable resin are attached to the hexagonal sacrifice frame 5 of the second embodiment is the same as the case where the cover and the foamable resin are attached to the first embodiment, and thus the description thereof is omitted.

  As mentioned above, although this invention has been demonstrated based on the Example, this invention is not limited to the structure of these Examples at all. For example, the number of parts divided into the partial frames constituting the sacrifice frame 4 and the sacrifice frame 5 can be increased or decreased according to the overall size of the sacrifice frames 4 and 5. Further, regarding the relationship between the four floating portions 21 and 21a and the four buoyancy adjusting portions 22 and 22a that change depending on the mounting position and the number of the partition walls 16, the entire sacrifice frame 4 and the sacrifice frame 5 and the entire net suspended by this , And the buoyancy adjustment part 22, 21a or the buoyancy adjustment part 22 or 22a, or the buoyancy adjustment part 22 or 22a or the buoyancy adjustment part. It is also possible to increase only one of 22 and 22a. Furthermore, the shape of the sacrifice frame in plan view is not limited to the rectangular shape of the sacrifice frame 4 or the hexagonal shape of the sacrifice frame 5. For example, the sacrifice frame is formed by connecting partial frames to hexagons or octagons. However, it can also be implemented.

1: Sacrifice 4, 5: Sacrificial frame 7: Net 8: Seawater 9: Air
12: Flange 13: Nut
14: Hanging tool
15: Upper frame 16: Partition 21, 21a: Floating part 22, 22a: Buoyancy adjusting part 31: Cover 32: Bundling tools 36, 37, 38: Expandable resin 41, 51: Partial frame A
42, 52: Partial frame B
43, 53: Partial frame A
44: Flat part 45: Valve 46: Hole

Claims (4)

  By having a substantially circular cross-sectional shape with a plane of a predetermined width on the upper surface, it has a space partitioned into a floating part and a buoyancy adjusting part inside, and the floating part and the buoyancy adjusting part are connected in a gallery shape A sacrifice frame that becomes an integral frame and suspends a net inside the frame.   The sacrifice frame according to claim 1, wherein the integral frame can be divided into a plurality of metal partial frames, and the plurality of partial frames are connected to each other by flanges to form an integral frame.   The sacrifice frame according to claim 1 or 2, wherein a cover is provided on a surface of the integral frame.   The sacrifice frame according to claim 2 or claim 3, wherein the inside of the floating portion is filled with a foamable resin.

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