JP2004113003A - Crawl apparatus and method for culturing in crawl - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crawl apparatus preventing a crawl from being drifted or broken and stably carrying out culturing even under severe conditions such as installation in a water area at a high water current speed or rough seas or stormy weather by, as necessary, arranging the crawl on or in the water and to provide a method for culturing in the crawl. <P>SOLUTION: The apparatus is equipped with the crawl 12, a buoyancy means 16, as necessary, changing and setting the position of the crawl in an optional sinking position on and in the water while supporting the the crawl 12 on or in the water with buoyancy and mooring means 14 for suppressing planar movement of the crawl 12 and mooring and supporting the crawl. For example, the apparatus is designed to locate the crawl 12 in water with relatively calm waves and float the crawl 12 on the water during operation such as feeding. Thereby, the crawl 12 can be used without being broken even in the open sea, etc., with violent waves and culturing in the crawl can stably be carried out. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cage system and a cage culture method used for aquaculture of fish and shellfish.
[0002]
[Prior art]
Conventionally, the cultivation of fish and shellfish has been done by placing a fish cage on land near the coast or in an inner bay where the current is relatively slow and the waves are gentle, for example, attaching a float to a fish cage frame assembled with wood, bamboo, etc., and floating it on the sea. A net suspended from the frame was stretched underwater to create an enclosure for cultivating seafood.
[0003]
[Problems to be solved by the invention]
In the case where a fish cage is disposed in a slow-flowing inner bay or the like as in the prior art, there has been a problem that the rest of the food given to the fish in the fish cage sediments on the sea floor and becomes sludge, thereby causing marine pollution. In addition, fish diseases are easily transmitted in closed water bodies, such as inner bays, where water exchange is small. In particular, in recent years, nitrogen, phosphorus, and the like contained in wastewater from homes and factories flow into the sea, and eutrophication tends to occur, and red tide is generated on the sea surface, and fish and shellfish are adversely affected. Furthermore, when cultivating a large amount of fish in the limited space in the bay, the fish cages must be densely arranged, and there is a risk that the dissolved oxygen in the water becomes insufficient and the fish die. In addition, in the case of strong winds such as typhoons, the cages floating on the sea surface are directly affected by the swell of strong waves generated by strong winds and the rapid flow of water, so that the cages are washed away or damaged, and furthermore the cages are damaged. The damage caused the seafood to escape, causing severe damage. On the other hand, if a fish cage is placed in the open sea in order to eliminate the effects of marine pollution and seafood, the fish cage will always be directly affected by the swell of strong waves and the rapid flow of water. Similarly, there is a high risk that the cage will be washed away or damaged, making it difficult to install the cage in the open sea.
[0004]
The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to make it possible to float up and down freely, and to arrange it in the water as needed, even in a water area with a fast current or a strong open sea. It is an object of the present invention to provide a live cage device and a live cage culture method capable of preventing ripening and breakage and satisfactorily farming. Another object of the present invention is to provide a pen cage apparatus and a pen cage culture method capable of buffering and dispersing the tension of a rope or the like supporting the pen to stably support the pen. It is a further object of the present invention to provide a fish cage device and a fish cage culture method that protect fish and shellfish by preventing deformation of the fish cage net while ensuring workability when the fish cage is raised.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a living cage 12, a buoyancy means 16 for changing the position of the living cage to an arbitrary sinking position in the water and underwater as necessary while supporting the living cage 12 on or above the water. And a mooring means 14 for restraining the living cage 12 from moving in a plane and mooring and supporting the same.
[0006]
In addition, the living cage 12 may be made of a structure that sinks in water in a free state.
[0007]
In addition, the buoyancy means 16 may include a buoyancy adjustment float 26 capable of adjusting its own buoyancy.
[0008]
In addition, the buoyancy means 16 may include a fixed buoyancy float 24 that constantly supports the living cage 12 on the water.
[0009]
Further, a tension buffer rope mechanism 33 may be provided in cooperation with the mooring means 14 to support the living cage while buffering tension from its surroundings.
[0010]
Further, the tension buffer rope mechanism 33 may include a side tension rope 32 connected to the living cage 12 and arranged so as to surround the periphery of the living cage 12.
[0011]
Further, the mooring means 14 has an anchor 36 and an anchor rope 38 connected to the anchor 36 and the other end connected to the side rope 32, respectively. The mooring float 40 may be connected to the attachment point P to support the attachment point P by buoyancy.
[0012]
In addition, the living cage 12 has an upper frame 18 that can be a working scaffold when floated, and a living cage net 20 attached to the upper frame 18 and stretched underwater. The lower frame 22 may be attached to the side.
[0013]
In addition, the living cage 12 having a net suspended and suspended in the water in a free state and submerged in the water is supported by the buoyancy means 16 on the water or in the water while supporting the water cage 12 as required. It comprises a livestock cage culture method characterized by performing aquaculture while changing the position to the sinking position.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of a cage system and a cage culture method of the present invention will be described with reference to the accompanying drawings. The cage device of the present invention, the position of the frame is set to any sinking position as needed while supporting the cage in the water or buoyancy, thereby, the state in which the frame body floats on the water surface, the frame body in the water This is a living cage device that performs aquaculture while changing the state of sedimentation and arrangement as needed.
[0015]
FIGS. 1 to 4 show an embodiment of a fish cage device of the present invention. In the embodiment, the fish cage device 10 includes a fish cage 12, buoyancy means 16, and mooring means 14 for mooring and supporting the fish cage. ing.
[0016]
In FIG. 1, the cage 12 includes an upper frame 18 and a cage net 20. The living cage 12 is a frame means with an aquaculture net for arranging a frame body, for example, constantly on the water, suspending a net for the aquarium, and putting a bream, a sea bream, a hamachi, other target fish, and the like to be cultured therein for aquaculture. The fish cage net is formed in a square shape with a bottom so that the target fish does not escape, and is suspended in water. As shown in FIG. 2, the upper frame 18 is formed of, for example, a frame in which metal such as a steel pipe is assembled in a rectangular shape in a plan view. The inner and outer frames are assembled to have a certain width so that they can be used as a scaffold. The upper frame 18 has a strength that can withstand the weight of a person and the impact of a certain amount of water flow or waves. The upper frame 18 is not limited to a steel pipe, and may be made of any material having a certain level of strength and corrosion resistance. The mounting structure is not limited to a rectangular shape in a plan view, but may be a triangle, a pentagon, other polygons, a circle, an ellipse, or any other shape. As shown in FIG. 3, a handrail 19 is attached to the upper frame body 18 in the same shape as the inner frame supported by a vertical rod erected from the inner frame. The upper frame 18 is buoyantly supported by buoyancy means 16 having a plurality of floats 24.26 described later. In this embodiment, since the upper frame body 18 is formed from a steel pipe, the mass of the upper frame body itself exceeds the buoyancy and enters the water in a free state alone, that is, in a free state in which the upper frame body is not supported by buoyancy means with a large buoyancy such as a float. Settles. The upper frame 18 serves as a foothold for an operator when floated on the sea surface, and has good workability such as feeding and catching of fish and shellfish.
[0017]
In this embodiment, as shown in FIGS. 1 and 3, the cage net 20 is stretched underwater at a position directly below the central opening of the upper frame 18 to form, for example, a three-dimensional rectangular box. I have. The fish cage net 20 surrounds six sides, that is, up, down, front, back, left, and right, and forms an accommodation space for fish and shellfish therein. A part of the net on the upper surface side can be freely opened and closed to provide a lid net for feeding. In addition, the shape of the net is not limited, and a three-dimensional polygonal shape, a cylindrical shape, and other shapes are formed in accordance with the shape of the upper frame. The living cage net 20 is formed of, for example, a wire net. Since the wire mesh has a certain degree of rigidity, the wire mesh is not easily deformed even when used in a water area where a water flow is fast or a water area where a wave is strong. In addition, the cage net 20 is not limited to a wire net, but may be made of a synthetic fiber such as polyethylene, a rope formed of a rope, or another material suitable for a culture net. When the upper frame 18 is buoyantly supported on the water, the fish net 20 on the upper surface side is positioned above the water surface so that the fish and shellfish are not alerted by the undulating sound caused by the contact between the water and the net. It is good to provide.
[0018]
As shown in FIG. 3, a lower frame 22 is fixed to a lower end side of the net cage 20. As shown in FIGS. 1 and 3, the lower frame 22 is formed of the same steel pipe as the upper frame 18, and is connected and fixed in a rectangular frame shape to the square side on the bottom side of the net cage 20. The lower frame 22 prevents deformation of the cage net 20 due to the water flow, and prevents the fish and shellfish from unexpectedly coming into contact with the net and being damaged. Further, the lower frame 22 fixes the weight body to the lower end side of the net cage 20, thereby lowering the center of gravity of the net cage 12 below and maintaining the stability of the net in the water.
[0019]
In this embodiment, the living cage 12 is composed of a heavy structure in which the upper frame body 18 made of a steel pipe, a wire mesh, or the like and the living cage net 20 are assembled, so that the living cage 12 is free, that is, the living cage 12 (in this embodiment, the upper and lower frames). If the buoyancy is not supported by large buoyancy such as a float, only the bodies 18 and 22 and the net cage 20) will sink in water. The living cage 12 is buoyantly supported by buoyancy means 16 as shown in FIG.
[0020]
In the present embodiment, the buoyancy means 16 is a buoyancy support means of the livestock cage 12 which buoyancy-supports the water above the water and changes and sets an arbitrary sinking position in the water as needed. In this embodiment, the buoyancy means 16 has a fixed buoyancy float 24 and a buoyancy adjustment float 26 as shown in FIGS. As shown in FIGS. 2 and 3, the fixed buoyancy float 24 is, for example, provided in a substantially bale shape, and a plurality of the fixed buoyancy floats 24 are arranged and fixed on the lower surface side of the upper frame 18. The fixed buoyancy float 24 is filled with air, and constantly exerts a constant buoyancy on the living cage 12. The fixed buoyancy float 24 can reduce the weight of the cage 12 in water and reduce the support force of the mooring means 16 during sinking of the cage. If the fixed buoyancy floats 24 are arranged in a well-balanced manner so that the buoyancy to the living pens 12 acts evenly, the living pens are stable and suitable. In this embodiment, the upper frame body 18 is symmetrically arranged on opposing sides, and the four sides are arranged so as to exert the same buoyancy. Since the fixed buoyancy float 24 floats and sinks integrally with the living cage 12, it is formed of a material having high pressure resistance against water pressure.
[0021]
The buoyancy adjusting float 26 adjusts the buoyancy of the entire living pens 12 by freely adjusting its own buoyancy, thereby causing the living pens to float. In this embodiment, as shown in FIGS. 2 and 3, the float 26 for adjusting buoyancy is formed in a substantially bale shape by a hard synthetic resin, for example, and a hollow portion in which air for generating buoyancy is stored. Is formed. The buoyancy adjusting float 26 is arranged and fixed in a well-balanced manner on the lower surface side of the upper frame body 18 at the center of each of four sides of the upper frame body 18, and is installed so that buoyancy is evenly generated. In this embodiment, the float 26 for adjusting buoyancy adjusts the buoyancy of the float itself by allowing water or air to flow into and out of the hollow interior. The float 26 for adjusting the buoyancy is provided with an air valve 28 that communicates with the hollow interior and serves as an air inlet / outlet above the body. A hose is connected to the air valve 28, and air supply means such as a compressor is connected to the extension end side. Further, a water supply / drain port 30 which communicates with the hollow interior and serves as an inlet / outlet of water is provided below the body of the float 26 for adjusting buoyancy. In addition, each float including a buoyancy adjusting float, a fixed buoyancy float, and a mooring float may be appropriately coated with an expandable synthetic resin or the like on the inner and outer surfaces of the float body so as to improve the buoyancy or the protective effect of the float. Good to do.
[0022]
As shown in FIG. 4, when sinking the living cage 12, the air valve 28 is opened and the surrounding water is introduced into the float hollow from the water supply / drain port while exhausting air, thereby reducing the buoyancy of the buoyancy adjusting float. And reduce the weight of the cage to a level greater than the buoyancy to sink the cage. On the other hand, when the living cage 12 is raised, the air is pressure-fed from the air valve 28 by the compressor C to drain the internal water from the water supply / drain opening, and the buoyancy is increased again to float on the water. The rate of change of the internal buoyancy changes due to the adjustment of the sending pressure of the compressor C and the like, and the rising speed of the cage changes. The air enters and exits so that all of the plurality of adjusting floats 26 always have the same buoyancy. When the living cage 12 is raised, the air valve 28 of the buoyancy-adjusting float 26 is closed to prevent sudden escape of air and entry of water, thereby preventing buoyancy from decreasing. In this embodiment, the buoyancy adjustment float is adjusted by using a compressor that pumps air. However, a buoyancy adjustment float may be adjusted by letting water in and out of the buoyancy adjustment float. The number of air valves and water supply / drainage ports is arbitrary, and the installation positions thereof may also be arbitrary. The float for buoyancy adjustment, if you set the maximum buoyancy so that the upper frame body is placed above the water surface when floating the cage, it will not be exposed to waves when putting on the upper frame body Workability such as feeding can be improved.
[0023]
The mooring means 14 is a mooring means for mooring and supporting the living cage 12 at a fixed installation position so that the living cage 12 is not washed away by water currents or waves, and suppresses the planar movement of the living cage. As shown in FIGS. 2 and 3, the mooring means 14 has four anchors 36 and anchor ropes 38 respectively connected to the anchors 36. In this embodiment, the other side of the anchor rope 38 is connected to the side tension rope 32 arranged around the living cage 12 and connected to the living cage 12. That is, the anchor rope 38 connected to the anchor 36 is mooring and supporting the fish cage through the side tension rope 32. In this embodiment, the anchors 36 are arranged at equal intervals so as to surround the cage in the diagonal extension of the upper frame body in plan view. The weight and number of the anchors 36, the length of the anchor ropes 38, and the like are arbitrarily set according to the size and weight of the fish cage, the climate of the installation sea area, the speed of the water flow, the strength of the waves, the water depth, and the like.
[0024]
As shown in FIG. 2, the side tension rope 32 is stretched so as to form a substantially rectangular frame in a plan view larger than the upper frame body 18 so as to surround the living cage 12 in a planar manner, as shown in FIG. 3. , At an arbitrary depth in the water. The side tension rope 32 is connected to the cage 12 and is disposed so as to surround the periphery of the cage, thereby forming a tension buffering rope mechanism 33 that buffers the tension from the periphery of the cage 12. Here, the tension buffer rope mechanism 33 is a tension buffer unit that supports the living cage 12 while cooperating with the mooring means 14 to buffer the tension from around the living cage 12. In the embodiment, the four corners of the quadrangular shape formed by the side tension rope 32 and the four corners of the upper frame 18 are connected and connected by connection ropes 34, respectively. The other ends of the anchor ropes 38 are connected to the respective corners of the rectangular frame of the side tension rope 32, and are always stretched and supported uniformly in four directions by the anchor.
[0025]
When the living cage 12 is floating on the water surface, the supporting tension from the anchor rope 38 having one end fixed to the anchor 36 temporarily extends to the side tension rope 32, and the connection rope 34 connected to this side tension rope. The living cage 12 is indirectly supported via the. Therefore, in this state, for example, when the water area is aging, for example, the tension of the four anchor ropes 38 anchored in the corner extension direction is applied to the side tension ropes 34 and further connected in a square shape. The ropes corresponding to each side of the side rope are attracted to each other and buffered, and the tension is averaged. Further, the connecting ropes 34 connected to the corner positions of the side ropes are connected to the four corners with the averaged stable tension. The upper frame body 18 is pulled and supported from the position. In addition, for example, when the anchor rope 38 is directly connected to the cage, a large tensile force is instantaneously and irregularly and instantaneously applied to the cage in a timely manner, so that the cage is damaged or damaged. There is a possibility that the device itself or the cultured fish may be damaged and escaped, causing serious damage.
[0026]
Further, a mooring float 40 floating on the water is connected via a mooring rope 42 to a connection point P between the side tension rope 32 and the anchor rope 38. Since the side tension rope 32 is buoyantly supported at the binding point P by the mooring float 40, the supporting force of the anchor rope 38 due to the tension toward the sea bottom and the mooring rope 42 due to the buoyancy toward the sea surface. It is kept constant at an arbitrary depth position in the water by balance. The buoyancy of the fixed buoyancy float 24 and the mooring float 40 is set so that the side tension rope 32 does not sink due to the weight of the cage 12 when the cage 12 sinks in water. The side tension rope 32 is always supported at a fixed position irrespective of the state of the living cage 12.
[0027]
As shown in FIG. 4, the lowest position H (vertical movement width of the livestock cage) of the livestock cage 12 is determined by the depth position where the side tension rope 32 is arranged and the length of the connection rope 34. In this embodiment, the underwater arrangement position of the side tension rope 32 is provided so as to be half of the lowest settlement position H, and the connection rope 34 is substantially tensioned when the living cage 12 rises and sinks. The living cage 12 is stably moored and supported. And, since the cages 12 are restricted from sinking to the sea floor, the cages 20 can be prevented from being damaged or deformed due to contact with the sea bottom, and are suitable for fish and shellfish without the sinking of the cages even in deep water. It is possible to realize the use of a fish cage at a water depth (water pressure) position. If the fish net is settled on the bottom of the water, the bottom of the fish net contacts the seabed and is damaged.In the case of a deep sea, water pressure adversely affects fish and shellfish, and the air supply hose is lengthened. Increasing the pressure resistance of the float increases material costs. Also, since the side tension ropes are disposed in the water, the ropes are not obstructed when, for example, approaching the boat to the living cage 12, and the ropes can be prevented from being cut off by screws or the like. When the lowest sinking position H of the fish cage 12 is set so that the bottom side of the fish cage net 20 does not contact the seabed, the side rope 32 is arranged and held at a certain position in the water. In addition, since the living cage 12 floats and sinks while being surrounded by the side tension ropes 32, the planar displacement is more effectively prevented when the living cage 12 moves up and down during settling time. Further, since the side tension ropes 32 are directly connected to the anchor ropes in the water and in a ring shape, that is, in a square shape, the side ropes 32 prevent a large bending of the anchor ropes due to the water flow in the water, and form a living cage in the water. It also has a function to help stable buoyancy support.
[0028]
FIG. 5 shows an embodiment in which a plurality of fish cages 12 are connected to side tension ropes 32. As shown in FIG. 5, a plurality of living cages 12 are connected, side ropes are installed so as to surround them, and corners of the respective living cages are connected to the side ropes. While providing buoyancy support capable of mooring and sinking and sinking a plurality of cage devices collectively, protection of the cages in water can be further performed. Note that the side tension rope is not limited to the rectangular frame shape, and may be stretched in an arbitrary shape corresponding to the shape of the fish cage, the arrangement position of the anchor, and the like.
[0029]
Next, an embodiment of the livestock cultivation method of the present invention will be described together with the operation of the livestock cultivation device according to the embodiment. The fish cage device 10 contains, for example, fish and shellfishes in a fish cage net 20, and is normally arranged with the fish cage 12 floating above the sea, and is moored and supported by the mooring means 14, as shown in FIG. Movement is suppressed. At this time, the inside of the buoyancy adjusting float of the buoyancy means 16 is filled with air, and acts together with the fixed buoyancy float 24 to exert buoyancy capable of floating the living cage 12 on the water surface. For example, in strong winds such as in stormy weather, seawater is introduced from the water supply / drain port 30 to reduce buoyancy while discharging the internal air from the air valves 28 of the respective buoyancy adjustment floats 26 to reduce the buoyancy, thereby sinking the cage in the water. By submerging the cage in the sea, the waves are weaker than the sea surface in the sea, so the influence of the waves received by the cage is weak and the cage can be prevented from being washed away or destroyed. Then, when the strong wind has subsided, the compressor C or the like drains water from the water supply / drain port 30 to increase the buoyancy while sending pressurized air from the air valve 28 of the buoyancy adjustment float to the inside of the buoyancy adjustment float, thereby increasing the buoyancy again. Surface above sea level. Also, when a red tide occurs, the red tide is generated on the water surface side, so that the red tide can be similarly sunk in the sea to avoid an influence on fish and shellfish.
[0030]
Further, as another usage mode, it is also possible to use such a state that the cage is settled in the water where the influence of the wave is weaker than the water surface side, and the cage is raised only when necessary for feeding or catching work. Therefore, even if the cage is placed in the water area where the current is fast flowing or the sea area where the wave is strong, the cage can be prevented from being damaged by disposing the cage in the water. Since it can be used in places where the flow of water is fast, lack of dissolved oxygen and marine pollution are unlikely to occur, and the aquaculture efficiency can be improved. Further, since the temperature change is smaller in the water than in the sea surface, a favorable environment for the fish and shellfish can be maintained.
[0031]
The cage device of the present invention is not limited to the above-described embodiment, and may be arbitrarily modified without departing from the essence of the invention described in the claims. For example, the shape and size of the living cage, the fixed buoyancy float, the float for adjusting buoyancy, and the like are arbitrarily set. Further, the number and arrangement position of the fixed buoyancy float, the float for adjusting buoyancy and the like are arbitrary, and it is preferable to mount the float so that the buoyancy acts evenly. In addition, the float for adjusting buoyancy or other floats may have a metal float structure.
[0032]
【The invention's effect】
As described above, according to the cage device of the present invention, a cage, a buoyancy means for changing the position of the cage to an arbitrary sinking position on the water and in the water as needed while supporting the cage in the water or in the water, and buoyancy means, The structure is provided with a mooring means for suppressing the planar movement of the cage and mooring and supporting the cage, so that the cage can be freely raised and lowered, and the setting of the cage inside and outside the bay according to the water flow and the climatic conditions. The degree of freedom of the position is dramatically increased, and in particular, it is possible to dispose the cage in water that is less affected by waves than the water surface, and to prevent the cage from being washed away or destroyed. In addition, evacuation of the cage in a strong wind and subsequent return can be easily performed. In addition, the fish cage can be used in areas outside the bay where the water flow is fast, or in the open sea where the waves are strong, so that when it is installed in the bay etc., marine pollution due to sludge of the food deposited on the seabed and the transmission of diseases of fish and shellfish And various problems such as generation of red tide and damage to fish and shellfish due to lack of dissolved oxygen.
[0033]
In addition, by using a structure consisting of a structure that sinks in water in a free state, the cage can be used as a weight for sinking the cage while constructing the cage frame as a high-strength structure such as a metal pipe, Floating and sinking control can be facilitated and manufacturing costs can be reduced.
[0034]
In addition, the buoyancy means is configured to include a buoyancy adjustment float capable of adjusting its own buoyancy, so as to increase the buoyancy of the buoyancy adjustment float to support the buoyancy on the water, or to increase the buoyancy of the float, if necessary. Can be reduced and the cage can be sunk and arranged at an arbitrary position in the water, and a configuration in which the cage can float and sink can be realized.
[0035]
In addition, the buoyancy means is configured to include a fixed buoyancy float that constantly supports the buoy on the water, thereby obtaining the necessary buoyancy for the surfacing of the basin, and exerting buoyancy on the basin when the basin sinks, The weight of the underwater cage in water can be reduced, and the supporting force of the mooring means can be reduced.
[0036]
In addition, by using a structure including a tension buffering rope mechanism that supports the cage in connection with the mooring means while buffering the tension from its surroundings, the tension with respect to the cage is dispersed, and the cage is supported with an average tension and the cage is supported quickly. It is possible to stably cultivate fish and shellfish even under severe conditions such as installation in a water stream or in stormy weather or aging.
[0037]
In addition, the tension buffering rope mechanism is configured to include side tension ropes connected to the living cage and arranged so as to surround the surrounding of the living cage, so that the tension can be stabilized with an average tension from the periphery of the living cage with a simple configuration. In addition to supporting the preserved cage, the underwater height position setting when the cage is placed in the water, protection from the anchor rope, and the like can be achieved at the same time.
[0038]
In addition, the mooring means has an anchor and an anchor rope connected to the anchor and the other end side connected to the side rope, respectively, and further, a mooring float is provided at a connection point between the anchor rope and the side rope. The connection point is buoyantly supported at the connection point, so that the connection point between the side rope and the anchor rope is supported by buoyancy to hold the side rope at a constant depth position in the water, and the rope by water flow Various functions of the side rope can be realized by preventing bending of the rope.
[0039]
In addition, the fish cage has an upper frame that can be a working scaffold when floated, and a fish cage net attached to the upper frame and stretched underwater, and at the lower end side of the fish cage net, By adopting a configuration in which the frame is attached, for example, workability during operations such as feeding and catching is good, and deformation and breakage of the fish cage net can be prevented, and further, fish and shellfish can be protected.
[0040]
Furthermore, according to the cage cultivation method of the present invention, by performing culturing while changing the position on the water and any sinking position in the water as needed while supporting buoyancy on the water or in the water in a free state. Depending on the water flow and climatic conditions, the degree of freedom in the location of the cages inside and outside the bay is dramatically increased, especially when the cages are placed in water less affected by waves than the water surface, and the cages are washed away or destroyed Can be prevented. In addition, evacuation of the cage in a strong wind and subsequent return can be easily performed. Furthermore, even in the water area where the water flow is fast or the swell of the waves is strong, the fish cage is always settled in the sea where the influence of the waves is small, and the fish cage is raised only during the work such as feeding. The influence of the waves received can be reduced to prevent the cage from being damaged, and the aquaculture can be carried out well. In addition, because the fish cage can be used in areas outside the bay where the water flow is fast, or in the open sea where the waves are strong, it is possible to realize marine pollution due to sludge of the food that has settled on the bottom of the sea when installing it in the bay, etc., and transmission of fish and shellfish diseases. And various problems such as generation of red tide and damage to fish and shellfish due to lack of dissolved oxygen.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of a fish cage device of the present invention.
FIG. 2 is a partially omitted plan view of the living cage device of FIG.
FIG. 3 is a side view of the cage apparatus of FIG. 1;
FIG. 4 is an operation explanatory view of the living cage device of FIG. 1;
FIG. 5 is an explanatory view of an embodiment in which a plurality of the living cage devices of FIG. 1 are connected.
[Explanation of symbols]
10 Living cage device
12 living cage
14 Mooring means
16 Buoyancy means
18 Upper frame
20 netting net
22 Lower frame
24 fixed buoyancy float
26 Float Adjustment Float
32 Side rope
33 Tension buffer rope mechanism
36 anchor
38 Anchor rope
40 Mooring float

Claims (9)

A living cage,
A buoyancy means for changing the position of the cage to the above water and any sinking position in the water as needed while supporting the cage in the water or buoyancy in the water,
A mooring device, comprising: mooring means for suppressing mooring and supporting the mooring in a planar manner. 2. The cage device according to claim 1, wherein the cage is a structure that sinks in water in a free state. 3. The cage apparatus according to claim 1, wherein the buoyancy means includes a buoyancy adjustment float capable of adjusting the buoyancy of the buoyancy means. 4. The cage apparatus according to claim 1, wherein the buoyancy means includes a fixed buoyancy float that constantly supports the cage in water. 5. The apparatus according to any one of claims 1 to 4, further comprising a tension buffering rope mechanism that supports the living cage while buffering the tension from the surroundings in cooperation with the mooring means. 6. The cage apparatus according to claim 5, wherein the tension buffer rope mechanism includes a side tension rope connected to the cage and arranged to surround the periphery of the cage. The mooring means has an anchor and an anchor rope connected to the anchor and the other end connected to the side rope,
7. The livestock cage device according to claim 6, wherein a mooring float is connected to a connection point between the anchor rope and the side tension rope to support the connection point by buoyancy. The living cage is an upper frame that can be a work scaffold when floated,
A fish cage net attached to the upper frame and stretched underwater,
8. The cage system according to claim 1, wherein a lower frame is attached to a lower end of the cage network. A cage with a net that is suspended in the water and sinks in the water in a free state, and that has a net placed in the water. A livestock cage cultivation method characterized by culturing while changing the setting.

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