JP2021016338A - Floating and sinking preserve - Google Patents

Abstract

To provide a floating/sinking preserve facilitating assembling work and, even being enlarged, capable of stably retaining an attitude in floating/sinking.SOLUTION: A floating/sinking preserve 1 comprises a net body 2 for partitioning an aquaculture space 2S, and a support body 3 for suspending and supporting the net body 2. The support body 3 includes a frame body 35 disposed along the horizontal direction, and a plurality of column members 32 disposed along the perpendicular direction to the frame body 35. The column member 32 includes a vertical-type storage chamber 32S in which water or air is stored, and an upper opening part 321 and a lower opening part 322 for communicating the inside and the outside of the storage chamber 32S.SELECTED DRAWING: Figure 1

Description

The present invention relates to a floating and sinking cage.

Conventionally, in aquaculture offshore away from the coastal area, a floating-sink type walrus that can be subsided in the sea according to sea conditions has been used (for example, Patent Document 1). Such a floating and sinking cage has a cage frame that suspends and supports the cage net, and a floating and sinking tank attached to the cage frame. When the floating and sinking cage is floated, the buoyancy of the floating and sinking tank is increased by supplying compressed air to the floating and sinking tank and discharging seawater. On the other hand, when the floating and sinking cage is subsided, the buoyancy of the floating and sinking tank is reduced by injecting seawater into the floating and sinking tank and discharging compressed air.

The floating / sinking cage (fish cage device) described in Patent Document 2 has a cage frame that functions as a floating / sinking tank. This cage frame is composed of a hollow long tube, and water or compressed air can be stored in the hollow long tube. Since the floating / sinking cage described in Patent Document 2 does not require an independent floating / sinking tank, the number of parts is small and the production is easy.

JP-A-2009-89676 Japanese Patent No. 3490028

However, the floating-sink type cage described in Patent Document 2 is difficult to maintain a stable posture, and is not suitable for large-scale aquaculture, which has been increasingly requested in recent years.
Specifically, in the floating / sinking cage described in Patent Document 2, a hollow long tube is configured as a horizontal floating / sinking tank, and a horizontally long storage space exists in the hollow long tube. When water is present in such a horizontally long storage space, the water tends to be biased to one side of the horizontally long storage space, and the water surface tends to shake greatly. As a result, a tipping moment is likely to occur in the hollow long tube, and the posture of the cage becomes unstable. When such a floating-sink type cage is enlarged, the overturning moment generated in the hollow long tube becomes large, and the posture of the cage is tilted.

An object of the present invention is to provide a floating and sinking cage that has a small number of parts, is easy to manufacture, and can maintain a stable posture even when the size is increased.

The float-sink type cage of the present invention is a float-sink type cage including a net body for partitioning aquaculture space and a support for suspending and supporting the net body, and the support is arranged along the horizontal direction. A vertical storage chamber for storing water or air, and a plurality of pillars arranged along the direction perpendicular to the frame. It is characterized in that an upper opening and a lower opening that communicate with each other inside and outside the storage chamber are provided.

In such an invention, the pillar material functions as a floating / sinking tank arranged with respect to the frame body. Specifically, the buoyancy of the pillar material is increased by supplying compressed air to the storage chamber through the upper opening of the pillar material and discharging water in the storage chamber through the lower opening of the pillar material. Further, the buoyancy of the pillar material is reduced by injecting water into the storage chamber through the lower opening of the pillar material and discharging the air in the storage chamber through the upper opening of the pillar material.

Here, the "vertical" storage chamber in the pillar material means that the maximum vertical dimension of the storage chamber is larger than the maximum horizontal dimension of the storage chamber in the pillar material arranged along the vertical direction. Means.
In such a vertical storage chamber, the ratio of the water surface area to the amount of water existing in the storage chamber is smaller than that in the horizontal storage chamber. As a result, the maximum amount of shaking of the water surface existing in the storage chamber can be reduced.
In addition, when the cage is floated or subsided, the amount of air or water remaining in the vertical storage chamber is smaller than that in the horizontal storage chamber. As a result, it is possible to prevent the water remaining in the storage chamber from being significantly biased to one side of the storage chamber.
Therefore, in the present invention, the overturning moment generated in each pillar can be reduced, and the buoyancy of each pillar can be applied to the support in a well-balanced and stable manner. As a result, the posture of the floating / sinking cage can be maintained in a stable state.

Further, in the present invention, the pillar material having the above-mentioned vertical storage chamber is configured as a part of the support. Since this pillar material has both a function as a strength member against waves and a function as a storage chamber for a floating and sinking tank, the floating and sinking type cage of the present invention is compared with the conventional technique in which the floating and sinking tank is attached to the cage. As a result, the number of parts is small and manufacturing is easy.
Therefore, the present invention has durability against waves and the like, has a small number of parts and is easy to manufacture, and can maintain a stable posture during floating and sinking even when the size is increased. We can provide a ceremonial cage.

In the floating and sinking cage of the present invention, the support further has a horizontal diagonal member that connects different portions of the frame body to each other, and the upper end portion of the net body is locked to the horizontal diagonal member. Is preferable.
In the present invention, the frame body is reinforced by a horizontal diagonal member that connects different parts of the frame body. Further, since the upper end portion of the net body is locked to the horizontal diagonal member, the net body can be arranged at a position away from the pillar material. Therefore, even when the net body is deformed by the tidal current, it is possible to prevent the net body from coming into contact with the pillar material and rubbing. As a result, damage to the net body can be suppressed.

In the floating and sinking cage of the present invention, the frame body is connected to the upper end portion of the pillar material, and the support body is a vertical portion connecting the lower end portion or the intermediate portion of the pillar material and the frame body. It is preferable to have more diagonal members.
In the present invention, since the center of gravity of the cage is arranged below the beam due to the configuration in which the vertical diagonal member is connected to the lower end or the middle portion of the pillar, the balance of the cage on the water surface can be stabilized. .. Further, since the vertical diagonal member vertically connects the column member and the frame body, the strength of the entire support is improved. As a result, even when the size of the cage is increased, the durability of the cage against waves and the like can be improved.

In the floating and sinking cage of the present invention, it is preferable that the frame has a polygonal shape formed by a plurality of beam members, and the pillar members connect the ends of the beam members to each other.
In the present invention, a polygonal frame can be formed by combining linear beam members, and the member does not need to be bent as compared with the case where the frame has another shape such as a circular shape. Floating and sinking cages can be manufactured more easily.

According to the present invention, it is possible to provide a floating / sinking cage that is easy to assemble and can maintain a stable posture even when the size is increased.

The perspective view which shows the floating and sinking type cage which concerns on one Embodiment of this invention. The perspective view which shows a part of the floating and sinking type cage of the said embodiment. The schematic diagram which shows the aquaculture system including the floating and sinking type cage of the said embodiment. The cross-sectional view which shows typically the pillar material of the said embodiment. The cross-sectional view which shows typically the pillar material of the said embodiment. The cross-sectional view which shows typically the pillar material of the said embodiment. The cross-sectional view which shows typically the pillar material of the said embodiment. The cross-sectional view which shows typically the pillar material of the said embodiment. The cross-sectional view which shows typically the pillar material of the said embodiment. The cross-sectional view which shows typically the pillar material of the comparative example. The cross-sectional view which shows typically the pillar material of the comparative example. The cross-sectional view which shows typically the pillar material of the comparative example. The cross-sectional view which shows typically the pillar material of the comparative example. The cross-sectional view which shows typically the pillar material which concerns on the modification of the said embodiment. The cross-sectional view which shows typically the pillar material which concerns on the modification of the said embodiment. The schematic diagram which shows the floating-sink type cage which concerns on the modification of the said embodiment. The schematic diagram which shows the floating-sink type cage which concerns on the modification of the said embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the floating / sinking type cage 1 is installed in, for example, in the sea or near the sea surface, and suspends a net body 2 arranged in the sea in a vertical direction (vertical direction) and a net body 2. It includes a support 3 that is lowered and supported, and a hanging body 4 that is suspended from the support 3 via a rope 21 and attached to a net body 2. By storing or discharging compressed air, the floating / sinking cage 1 can float near the surface of the sea or sink into the sea.

The net body 2 may be any one that can obtain water permeability while partitioning the aquaculture space 2S for cultivating seafood, and for example, a wire net, a synthetic fiber net, a resin net, or the like can be used. In FIG. 1, the outer shape of the net body 2 is shown by a chain line for simplification of the figure. However, the net body 2 is, for example, a tubular net unit arranged along the vertical direction in the sea. It is configured to have a ceiling net unit that closes the upper opening of the tubular net unit and a bottom net unit that closes the lower opening of the tubular net unit.

Although the details will be described later, the support 3 has a rectangular frame 35 when viewed from the vertical direction, and a horizontal diagonal member 33 provided at each corner portion 351 of the frame 35, and is viewed from the vertical direction. An octagonal cage frame 36 is configured.
Similar to the configuration of the support 3, the suspension body 4 has a quadrangular frame body 41 when viewed from the vertical direction, and horizontal diagonal members 42 provided at each corner of the frame body 41, and is viewed from the vertical direction. An octagonal cage frame 43 is configured.
In the present embodiment, the cage frame 43 of the hanging body 4 is suspended from the cage frame 36 of the support 3 by a rope 21. Further, the upper end of the net body 2 is tied to the cage frame 36 of the support 3 with a rope, and the lower end of the net body 2 is tied to the cage frame 43 of the hanging body 4 with a rope.

Such a floating and sinking cage 1 is moored, for example, to a buoy floating on the sea surface via a mooring line (not shown). By connecting the buoy to the seabed via a mooring line, the floating and sinking cage 1 is placed at a predetermined position on the sea surface or in the sea.

[Structure of support 3]
Next, the configuration of the support 3 will be described with reference to FIGS. 1 and 2. FIG. 2 is a partially enlarged view showing a part of the support 3 shown in FIG. In FIG. 2, the net body 2 is not shown.
The support 3 has a plurality of beam members 31, pillar members 32, horizontal diagonal members 33, and vertical diagonal members 34, respectively. These members constituting the support 3 are, for example, prismatic steel materials, which are joined to each other by bolts or the like.

In the present embodiment, the plurality of beam members 31 are arranged along the horizontal direction to form a quadrangular frame body 35. The plurality of column members 32 are arranged along the vertical direction at the corner portions 351 of the frame body 35, and connect the end portions 311 of the beam member 31 to each other. Specifically, the end portion 311 of the beam member 31 is joined to the upper end portion 323 of the column member 32 arranged at the corner portion 351.

The pillar 32 is configured to function as a floating / sinking tank, and the pillar 32 is provided with a vertical storage chamber 32S for storing water or air. The "vertical" storage chamber 32S means that the maximum vertical dimension of the storage chamber 32S is larger than the maximum horizontal dimension of the storage chamber 32S in the column members 32 arranged along the vertical direction. Means.

Further, upper openings 321 and lower openings 322 that communicate with each other inside and outside the storage chamber 32S are provided at portions of the pillars 32 that are different from each other in the vertical direction. The upper opening 321 is provided in the upper portion of the pillar 32, and is configured to connect the cage pipe 11 described later. The lower opening 322 is provided in the lower portion of the pillar 32 and is open to the sea.
In the cross-sectional view of the pillar 32 shown in FIG. 6 or 9, the upper opening 321 and the lower opening 322 are arranged on opposite sides of the pillar 32 with the central axis C in between. According to such an arrangement, as shown by the arrow in the figure, the storage chamber 32S has a flow of compressed air A supplied from the upper opening 321 or a seawater W flowing in from the lower opening 322. A flow occurs. That is, an air flow or a water flow in a direction orthogonal to the central axis C is generated in the storage chamber 32S.

The horizontal diagonal member 33 is arranged so as to face each corner portion 351 of the frame body 35, and connects the intermediate portions 312 of the two beam members 31 forming each corner portion 351. Specifically, one end of the horizontal diagonal member 33 is joined to the intermediate portion 312 of the beam member 31, and the other end of the horizontal diagonal member 33 forms a corner portion 351 with the beam member 31. It is joined to the intermediate portion 312 of the other beam member 31.
In the present embodiment, a total of four transverse members 33 are provided on the support 3.

Here, when the area between the two portions where the horizontal diagonal members 33 are joined in each beam member 31 is defined as the cage frame area, the four beam members 31's cage frame area and the four horizontal diagonal members 33 However, an octagonal cage frame 36 is formed. The net body 2 forms an octagonal tubular shape by locking the upper end portion of the net body 2 along the cage frame 36.
A grating 37 or a handrail 38 for the manager of the floating / sinking cage 1 to walk may be provided on the upper portion of the cage frame 36.

The vertical diagonal member 34 is arranged below the beam member 31, and connects the intermediate portion 312 of the beam member 31 and the lower end portion 324 of the column member 32. Specifically, one end of the vertical diagonal member 34 is joined to the intermediate portion 312 of the beam member 31, and the other end of the vertical diagonal member 34 is a column member to which the end portion 311 of the beam member 31 is joined. It is joined to the lower end portion 324 of 32.
In the present embodiment, two vertical diagonal members 34 are joined to each column member 32, and the two vertical diagonal members 34 are joined to different beam members 31. A total of eight vertical diagonal members 34 are provided on the support 3.
In the above support 3, the corner portion 351 of the frame body 35 is reinforced by the horizontal diagonal member 33 and the vertical diagonal member 34.

[Corf floating and sinking system]
As shown in FIG. 3, the cage floating and sinking system 100 includes a floating and sinking cage 1 of the present embodiment and an air supply device 5 for supplying compressed air to the floating and sinking cage 1.

In addition to the above-described configuration, the floating-sink type cage 1 includes four cage pipes 11 provided corresponding to the four pillar members 32. One end of the cage pipe 11 is connected to the upper opening 321 of the corresponding pillar member 32 (see FIG. 2), and the other end of the cage pipe 11 is connected to the common cage pipe 12, and the cage pipe is connected to the common cage pipe 12. The tip of 12 is attached to a floating body such as a float 6 and arranged on the sea surface, and a coupler 13 is connected to the tip. Further, a sluice valve 14 is installed in the cage pipe 12, and the opening and closing can be switched as needed.

The air supply device 5 is loaded on a hull or the like that is accessible to the floating / sinking cage 1, and can supply compressed air to each pillar 32 of the floating / sinking cage 1. The air supply device 5 includes an air source 51 and a pipe 52 connected to the air source 51.

The air source 51 is an electric motor or an engine-driven air compressor (compressor), and supplies compressed air at a predetermined pressure to the pipe 52.
A coupler 57 is provided at the tip of the pipe 52. The coupler 57 can be connected to the coupler 13 of the cage pipe 12. In FIG. 3, the air supply path P1 when the couplers 13 and 57 are connected is illustrated by an arrow.
A sluice valve 55 is installed in the pipe 52, and can be opened and closed as needed.

[Operation of floating and sinking cage]
Next, the operation of the floating / sinking cage 1 will be described with reference to FIGS. 3 to 9.
In the following description, the floating / sinking tank 9 shown in FIGS. 10 to 13 is used as a comparative example with respect to the pillar material 32 shown in FIGS. 4 to 9. The floating / sinking tank 9 of this comparative example is provided with a storage chamber 9S having the same capacity as that of the present embodiment, and the storage chamber 9S is a horizontal type. That is, when the central axis C of the floating / sinking tank 9 is arranged in the vertical direction, the storage chamber 9S is configured to have a maximum size in the horizontal direction larger than a maximum size in the vertical direction.
Further, in FIGS. 4 to 13, the piping connected to the pillar member 32 or the floating / sinking tank 9 is not shown.

In FIG. 3, when the floating and sinking cage 1 is levitated, the coupler 57 on the air supply device 5 side is connected to the coupler 13 on the floating and sinking cage 1, the sluice valves 14 and 55 are opened, and the supply of compressed air is started. ..
At this time, in the pillar material 32 of the floating-sink type cage 1, compressed air A was supplied to the storage chamber 32S from the upper opening 321 and seawater existing in the storage chamber 32S, as shown by a white arrow in FIG. W is discharged into the sea through the lower opening 322. When the amount of compressed air A stored in the storage chamber 32S exceeds a predetermined amount, the floating / sinking cage 1 starts to float due to the buoyancy of the pillar 32. Such supply of compressed air is also performed in the comparative example (see FIG. 10).

While the floating and sinking cage 1 is ascending (or sinking), seawater W having a capacity less than the capacity limit is present in the storage chamber 32S.
Here, in the storage chamber 32S of the present embodiment shown in FIG. 4, the ratio of the water surface area to the amount of seawater W existing inside is smaller than that of the storage chamber 9S of the comparative example shown in FIG. 10, and an inclination is added. The maximum amount of shaking H of the water surface at that time becomes small. Therefore, in the present embodiment, the overturning moment applied to the column member 32 can be reduced as compared with the comparative example.

Further, when the supply of compressed air A is continuing and a predetermined amount or more of seawater W is discharged from the storage chambers 32S and 9S, the undischarged seawater W may be accumulated on one side of the storage chambers 32S and 9S ( (See FIGS. 5 and 11).
Here, in the present embodiment shown in FIG. 5, the amount of seawater W collected on one side of the storage chamber 32S is smaller because the size of the storage chamber 32S in the direction orthogonal to the central axis C is shorter than that in the comparative example shown in FIG. Small (the maximum difference D of the water surface position in the storage chamber 32S in the direction of the central axis C is small). Therefore, as shown in FIG. 6, the compressed air A flowing in the direction orthogonal to the central axis C can push out the seawater W accumulated on one side of the storage chamber 32S.
On the other hand, in the comparative example shown in FIG. 11, the amount of seawater W collected on one side of the storage chamber 9S is large because the size of the storage chamber 9S in the direction orthogonal to the central axis C is long (in the storage chamber 9S in the central axis C direction). The maximum difference D of the water surface position is large). In the comparative example, the direction of the air flow in the storage chamber 9S is the same as that of the present embodiment, but it is difficult to sufficiently push out the seawater W because there is a large amount of seawater W accumulated on one side of the storage chamber 9S. Therefore, seawater W remains on one side of the storage chamber 9S, which causes a tipping moment.
In the present embodiment, the amount of seawater W remaining in the storage chambers 32S and 9S can be suppressed and the overturning moment applied to the column member 32 can be reduced as compared with the comparative example.

When the floating and sinking cage 1 floats by a desired distance, or when compressed air A instead of seawater is discharged from the lower opening 322 of the storage chamber 32S, the sluice valves 14, 55 are shown in FIG. Is closed, the supply of compressed air A is stopped, and the connection of the pair of couplers 13 and 57 may be disconnected. As described above, the ascent of the floating and sinking cage 1 is completed.

In FIG. 3, when the floating floating cage 1 is subsided, the sluice valve 14 is opened and the compressed air A is started to be discharged while the pair of couplers 13 and 57 are disconnected. In FIG. 3, the air discharge path P2 is illustrated by an arrow.

At this time, as shown by the black arrow in FIG. 4, the seawater W flows into the storage chamber 32S from the lower opening 322, and the compressed air A existing in the storage chamber 32S passes through the upper opening 321. It is discharged. The compressed air A discharged from the storage chamber 32S is discharged into the air from the coupler 13 via the cage pipes 11 and 12. When the amount of compressed air A remaining in the storage chamber 32S is equal to or less than a predetermined amount, the floating / sinking cage 1 starts to sink. Such discharge of compressed air A is also performed in the comparative example (see FIG. 10).

Here, consider a case where the pillar member 32 of the present embodiment exists near the sea surface before the sinking of the floating-sink type cage 1. In such a case, in the pillar material 32 (see FIG. 7) of the present embodiment, the liquid level height L from the lower opening 322 to the sea surface is higher than that of the floating / sinking tank 9 (see FIG. 12) of the comparative example. growing. Therefore, in the present embodiment, seawater can be suitably flowed into the storage chamber 32S only by the differential pressure due to the liquid level height L without the need for a power source such as a pump.

When the compressed air A is being discharged and a predetermined amount or more of seawater W flows into the storage chambers 32S and 9S, the undischarged compressed air A may be accumulated on one side of the storage chambers 32S and 9S (FIG. 8). , See FIG. 13).
Here, in the present embodiment shown in FIG. 8, the amount of compressed air A accumulated on one side of the storage chamber 32S is shorter than that of the comparative example shown in FIG. 13 because the size of the storage chamber 32S in the direction orthogonal to the central axis C is shorter. (The maximum difference D of the water surface position in the storage chamber 32S in the direction of the central axis C is small). Therefore, as shown in FIG. 9, the compressed air A accumulated on one side of the storage chamber 32S can be pushed out by the seawater W flowing in the direction orthogonal to the central axis C.
On the other hand, in the comparative example shown in FIG. 13, the amount of compressed air A accumulated on one side of the storage chamber 9S is large because the size of the storage chamber 9S in the direction orthogonal to the central axis C is long (inside the storage chamber 9S in the central axis C direction). The maximum difference D of the water surface position is large). In the comparative example, the flow direction of the seawater W in the storage chamber 9S is the same as that of the present embodiment, but it is difficult to sufficiently push out the compressed air A because there is a large amount of compressed air A accumulated on one side of the storage chamber 9S. Is. Therefore, in the storage chamber 9S, the seawater W is unevenly present due to the compressed air A remaining on one side, which causes a tipping moment.
In the present embodiment, the amount of compressed air A remaining in the storage chambers 32S and 9S can be suppressed and the overturning moment applied to the column member 32 can be reduced as compared with the comparative example.

When the floating and sinking cage 1 sinks by a desired distance, or when seawater instead of air is discharged from the upper opening 321 of the storage chamber 32S, the sluice valve 14 is closed.
With the above, the sinking of the floating and sinking cage 1 is completed.

[Effect of this embodiment]
In the present embodiment as described above, there are the following effects.
In the floating / sinking type cage 1 of the present embodiment, as described above, the pillar member 32 functions as a floating / sinking tank arranged with respect to the frame body 35. Since the pillar material 32 is provided with the vertical storage chamber 32S, the overturning moment generated in each pillar material 32 can be reduced as compared with the horizontal type floating / sinking tank 9 as in the comparative example, and the support 3 can be used. On the other hand, the buoyancy of each pillar 32 can be applied in a well-balanced and stable manner. As a result, the posture of the floating / sinking cage 1 can be maintained in a stable state.

Further, in the floating / sinking cage 1 of the present embodiment, the pillar member 32 that functions as a floating / sinking tank is configured as a part of the support 3. Since the pillar material 32 has both a function as a strength member against waves and a function as a storage chamber 32S of the floating and sinking tank, the floating and sinking type cage 1 of the present embodiment is a conventional one in which the floating and sinking tank is attached to the cage frame. Compared to technology, the number of parts is small and manufacturing is easy.
Therefore, in the present embodiment, it is durable against waves and the like, the number of parts is small and it is easy to manufacture, and even when the floating and sinking type cage 1 is enlarged, the posture at the time of floating and sinking is stable. Can be kept.

The floating / sinking cage described in Patent Document 1 described above stabilizes the posture by arranging a vertical floating / sinking tank (floating body) in the center of the cage frame. However, in such a configuration, the aquaculture space in the cage frame is narrowed due to the presence of the floating / sinking tank, and the aquaculture efficiency is lowered.
On the other hand, in the floating-sink type cage 1 of the present embodiment, since the pillar material 32 that functions as the floating-sink tank is arranged in the frame body 35, it interferes with the aquaculture space 2S inside the frame body 35. There is no. Therefore, according to the floating-sink type cage 1 of the present embodiment, the aquaculture efficiency can be improved as compared with the floating-sink type cage described in Patent Document 1.

In the present embodiment, the frame body 35 is reinforced by the horizontal diagonal members 33 that connect the different parts of the frame body 35 (intermediate portions 312 of the beam members 31). Further, since the upper end portion of the net body 2 is locked to the horizontal diagonal member 33, the net body 2 can be arranged at a position away from the pillar member 32. Therefore, even when the net body 2 is deformed by the tidal current, it is possible to prevent the net body 2 from coming into contact with the pillar member 32 and rubbing against it. As a result, damage to the net body 2 can be suppressed.

In the present embodiment, the vertical diagonal member 34 is connected to the lower end portion 324 of the pillar member 32, so that the center of gravity of the floating / sinking cage 1 is arranged below the beam member 31, so that the floating / sinking cage 1 on the sea surface The balance can be stabilized. Further, since the vertical diagonal member 34 connects the column member 32 and the frame body 35 in the vertical direction, the strength of the entire support 3 is improved. As a result, even when the floating / sinking cage 1 is enlarged, the durability of the floating / sinking cage 1 against waves and the like can be improved.

In the present embodiment, the frame body 35 has a polygonal shape formed by a plurality of beam members 31, and the pillar members 32 connect the ends of the beam members 31 to each other. In such an embodiment, a polygonal frame 35 can be formed by combining the linear beam members 31, and the frame 35 has another shape such as a circular shape (for example, a modification described later). Compared with (FIGS. 16 and 17), the floating / sinking type cage 1 can be manufactured more easily because the member does not need to be bent.

[Modification example]
The present invention is not limited to the above-described embodiment, and modifications within the range in which the object of the present invention can be achieved are included in the present invention.

In the above-described embodiment, the beam member 31, the column member 32, the horizontal diagonal member 33, and the vertical diagonal member 34 constituting the support 3 are exemplified by a prismatic steel material, but the present invention is not limited to this, and other materials are used. Shapes and other materials may be utilized.

In the above embodiment, the plurality of beam members 31 form a quadrangular frame 35 when viewed from the vertical direction, but the frame 35 is not limited to a quadrangle, and may be a triangle, a pentagon, or the like. It may be a polygon of.

In the above-described embodiment, the horizontal diagonal members 33 are provided for each corner portion 351 of the frame body 35, but any or all the horizontal diagonal members 33 may be omitted.
Similarly, in the above-described embodiment, two vertical diagonal members 34 are provided for each column member 32, but any or all vertical diagonal members 34 may be omitted.
Further, in the above-described embodiment, when the buoyancy of each pillar member 32 is insufficient, an additional tank for storing air may be installed in each pillar member 32.

In the above-described embodiment, the vertical diagonal member 34 connects the intermediate portion 312 of the beam member 31 and the lower end portion 324 of the column member 32, but the intermediate portion 312 of the beam member 31 and the intermediate portion of the column member 32 are connected. You may connect. Here, the intermediate portion of the pillar member 32 may be a portion between both ends of the pillar member 32.

In the above embodiment, the upper opening 321 and the lower opening 322 are arranged on opposite sides of the central axis C of the pillar 32, but the present invention is not limited to this, and the upper opening 321 and the lower opening 321 and the lower opening The side opening 322 can be arranged at an arbitrary position.
For example, as shown in FIGS. 14 and 15, the upper opening 321 and the lower opening 322 may be arranged on the same side of the central axis C of the column member 32. In such a modified example, the force of the air flow pushing out the seawater W remaining on one side of the storage chamber 32S is smaller than that of the above embodiment (see FIG. 14), and similarly, it remains on one side of the storage chamber 32S. The force of the water flow that pushes out the compressed air A becomes smaller (see FIG. 15). However, as compared with the above-mentioned comparative example, the amount of seawater W or compressed air A remaining on one side of the storage chamber 32S is small, so that the overturning moment applied to the column member 32 can be reduced.

In the above embodiment, the frame body 35 is formed into a polygonal shape by a plurality of beam members 31, but the frame body of the present invention is not limited to such a configuration.
For example, as shown in FIG. 16 or FIG. 17, the frame body 35A may be formed in a circular shape. In this modification, any structure can be adopted as the connection structure of the column member 32 to the frame body 35A. For example, when the frame body 35A is composed of a plurality of arc-shaped members, the pillar member 32 may be provided so as to connect the ends of the arc-shaped members.
Further, in this modification, it is preferable that the column members 32 are arranged at equal intervals with respect to the frame body 35A. Each end of the horizontal diagonal member 33A is preferably connected to an intermediate portion of adjacent pillar members 32, and the plurality of horizontal diagonal members 33A form a polygonal cage frame 36A when viewed from the vertical direction. Is preferable.

1 ... floating and sinking cage, 100 ... cage floating and sinking system, 11, 12 ... cage piping, 13 ... coupler, 14 ... sluice valve, 2 ... net body, 21 ... rope, 2S ... aquaculture space, 3 ... support, 31 ... beam Material, 311 ... End, 312 ... Middle, 32 ... Pillar, 321 ... Upper opening, 322 ... Lower opening, 323 ... Upper end, 324 ... Lower end, 32S ... Storage chamber, 33, 33A ... Horizontal Diagonal material, 34 ... Vertical diagonal material, 35,35A ... Frame body, 351 ... Corner, 36,36A ... cage frame, 4 ... Suspended body, 5 ... Air supply device, 51 ... Air source, 52 ... Piping, 55 ... Gate valve, 57 ... coupler, 6 ... float, 9 ... floating and sinking tank, 9S ... storage chamber, A ... compressed air, C ... central axis, D ... maximum difference in water surface position, H ... maximum amount of shaking of water surface, P1 ... Air supply path, P2 ... Air discharge path, W ... Seawater.

Claims (4)

A floating and sinking cage provided with a net body for partitioning aquaculture space and a support for suspending and supporting the net body.
The support
Frames arranged along the horizontal direction and
It has a plurality of pillars arranged along the direction perpendicular to the frame, and has.
The pillar material is provided with a vertical storage chamber for storing water or air, and an upper opening and a lower opening for communicating with each other inside and outside the storage chamber. The floating and sinking cage according to claim 1.
The support further has a transverse member that connects different parts of the frame to each other.
A floating and sinking cage characterized in that the upper end portion of the net body is locked to the horizontal diagonal member. The floating and sinking cage according to claim 1 or 2.
The frame body is connected to the upper end portion of the pillar material, and is connected to the upper end portion.
The support is a floating / sinking cage characterized by further having a vertical diagonal member connecting the lower end portion or the intermediate portion of the pillar member and the frame body. The floating / sinking cage according to any one of claims 1 to 3.
The frame body has a polygonal shape formed by a plurality of beam members.
The pillar material is a floating-sink type cage characterized in that the ends of the beam material are connected to each other.

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