JP3950127B2

JP3950127B2 - Fish farming equipment

Info

Publication number: JP3950127B2
Application number: JP2004173077A
Authority: JP
Inventors: 英水熊井; 貴彦岡田; 清加藤
Original assignee: Kinki University
Current assignee: Kinki University
Priority date: 2004-06-10
Filing date: 2004-06-10
Publication date: 2007-07-25
Anticipated expiration: 2024-06-10
Also published as: JP2005348658A

Description

本発明は、海などを利用してマグロなどの魚類を養殖するための装置に関する。 The present invention relates to an apparatus for culturing fish such as tuna using the sea or the like.

近年、マグロなどの高級魚の養殖が、海岸付近の水域に設けられた生簀内で行われている。 In recent years, farming of high-quality fish such as tuna has been carried out in a ginger provided in a water area near the coast.

マグロのような繊細な魚は、特に夜間に、たとえば生簀の近隣を通過する自動車または漁船の照明装置による光を受けると、その光に興奮し、突然暴れ出す習性を有する。従来の養殖装置では、このような光が遮断されないので、生簀中の養殖魚が、暴れ、生簀網または他の養殖魚に衝突することによって、魚体が損傷し、ひいては魚が死亡するという問題があった。また、暴れることによって体温が上昇し、魚体のタンパク質が変質する、いわゆる身焼けが生じるおそれがある。したがって、生簀に対して光が突然照射されたとしても養殖魚に影響を与えることのない、好適な養殖環境を実現可能な養殖装置が望まれている。 Delicate fish, such as tuna, have the habit of excitement and sudden rampage when exposed to light from, for example, a car or fishing boat illuminator that passes in the vicinity of a ginger at night. In conventional aquaculture equipment, such light is not blocked, and the problem is that cultured fish in the ginger collide with the rampage, ginger net or other aquaculture fish, causing damage to the fish body and eventually killing the fish. there were. In addition, the body temperature rises due to the rampage, and there is a risk that so-called burning will occur in which the protein of the fish body is altered. Therefore, there is a demand for an aquaculture device capable of realizing a suitable aquaculture environment that does not affect the cultured fish even if light is suddenly applied to the ginger.

本発明の目的は、生簀に照射される可視光を遮断し、養殖魚にとって快適な環境を実現可能な養殖装置を提供することである。 An object of the present invention is to provide an aquaculture device capable of blocking the visible light irradiated to a ginger and realizing a comfortable environment for cultured fish.

本発明は、（ａ）生簀２であって、
筒状の側部網１５の下部が底部網１９によって塞がれて上部が開放された養殖空間を形成し、
側部網１５の上端が取り付けられる生簀枠７に、浮力を与える生簀用フロート２３を有する生簀２と、
（ｂ）遮光シート３であって、
側部網１９よりも外方で、生簀枠７に沿って、養殖空間の水面の上下に延び、下端の水面からの長さは、遮光シート３の下端が生簀の内方に向かって変位しても側部網１５に接触しない程度にされる遮光シート３と、
（ｃ）生簀枠７に連結され、遮光シート３を支持する遮光シート支持手段４とを含むことを特徴とする魚類養殖装置である。
また本発明は、遮光シート支持手段４は、
生簀枠７の周方向に間隔をあけて配置される複数の支柱２９であって、各支柱２９は、生簀枠７に、第１ヒンジ２５を介して連結され、上下に延び、遮光シート３が設けられる支柱２９と、
生簀枠７に、第２ヒンジ２６を介して連結され、生簀２の外方に延びる支持部材５と、
支持部材５に取り付けられる支持部材用フロート３８ａ，３８ｂと、
支柱２９と支持部材５とに連結され、遮光シート３に張力を作用する引張りばね６とを有することを特徴とする。
また本発明は、遮光シート支持手段４はさらに、
第１ヒンジ２５に設けられ、支柱２９に、生簀２の外方Ｒへのばね力を作用する第１ねじりばね４６と、
第２ヒンジ２６に設けられ、支持部材５に下方Ｔへのばね力を作用する第２ねじりばね６６とを有することを特徴とする。 The present invention is (a) ginger 2,
The bottom of the cylindrical side net 15 is closed by the bottom net 19 to form an aquaculture space where the top is open,
A ginger 2 having a ginger float 23 which gives buoyancy to the ginger frame 7 to which the upper end of the side net 15 is attached;
(B) a light shielding sheet 3,
Outside the side net 19, it extends along the ginger frame 7 above and below the water surface of the aquaculture space, and the length from the bottom water surface is such that the lower end of the light shielding sheet 3 is displaced toward the inside of the ginger. Even if the light shielding sheet 3 is made so as not to come into contact with the side net 15,
(C) A fish farming apparatus including a light shielding sheet supporting means 4 connected to the ginger frame 7 and supporting the light shielding sheet 3 .
In the present invention, the light shielding sheet supporting means 4
A plurality of support posts 29 arranged at intervals in the circumferential direction of the ginger frame 7, each support post 29 being connected to the ginger frame 7 via the first hinge 25, extending vertically, and the light shielding sheet 3 being A support post 29 provided;
A support member 5 connected to the ginger frame 7 via a second hinge 26 and extending outward of the ginger 2;
Support member floats 38a, 38b attached to the support member 5,
A tension spring 6 is provided which is connected to the support column 29 and the support member 5 and applies tension to the light shielding sheet 3.
In the present invention, the light shielding sheet supporting means 4 further includes
A first torsion spring 46 that is provided on the first hinge 25 and acts on the support post 29 to apply a spring force to the outer side R of the ginger 2;
A second torsion spring 66 is provided on the second hinge 26 and applies a spring force downward T to the support member 5 .

本発明に従えば、生簀の上部に遮光シートが設けられることによって、生簀近辺を通過する自動車または漁船からの可視光を遮断することができる。 According to the present invention, the light shielding sheet is provided on the top of the ginger, so that visible light from an automobile or a fishing boat passing near the ginger can be blocked.

本発明に従えば、引張りばね６が、支柱２９から支持部材５に向かう方向に引張力を作用するので、支柱２９に装着された遮光シート３に張力を作用する。これによって、遮光シート３の装着状態をより安定的に維持することができる。 According to the present invention, the tension spring 6, because they act a tensile force in the direction toward the pillar 29 or we supporting support member 5, which exerts a tension to the light shielding sheet 3 attached to the post 29. Thereby, the mounting state of the light shielding sheet 3 can be maintained more stably.

支柱２９が生簀２の内方に変位し、遮光シート３に作用する張力が弱くなると、生簀２内に遮光シート３が着水するおそれがある。この場合、養殖魚に遮光シート３が絡まるなど、養殖環境を悪化させる原因となる。本発明に従えば、遮光シート３が生簀２の内方に風圧を受けるなどの外力を受けたとしても、引張りばね６が、支柱２９に作用する生簀２の内方への力に対し、逆方向にばね力を作用するので、支柱２９の生簀２の内方への変位を防止することができる。この結果、好適な養殖環境を実現することができる。 Strut 29 is displaced inwardly of the cage 2, the tension acting on the light-shielding sheet 3 is weakened, there is a possibility that impinges the light-shielding sheet 3 to preserve a 2. In this case, the aquaculture environment is deteriorated, for example, the light shielding sheet 3 is entangled with the cultured fish. According to the present invention, even if the light shielding sheet 3 receives an external force such as a wind pressure inward of the ginger 2 , the tension spring 6 is opposite to the inward force of the ginger 2 acting on the support 29. Since the spring force acts in the direction, it is possible to prevent the support 29 from being displaced inward of the ginger 2 . As a result, a suitable aquaculture environment can be realized.

本発明に従えば、支持部材５に支持部材用フロート３８ａ，３８ｂが取り付けられるので、支持部材５に浮力が与えられ、一定の高さを維持することができる。 According to the present invention, the support member for the float 38a in supporting support member 5, because 38b is attached, buoyancy is given to the supporting support member 5, it is possible to maintain a constant height.

本発明は、遮光シート支持手段４は、
生簀枠７の周方向に間隔をあけて配置される複数の支柱２９であって、各支柱２９は、生簀枠７に、第１ヒンジ２５を介して連結され、上下に延び、遮光シート３が設けられる支柱２９と、
第１ヒンジ２５に設けられ、支柱２９に、生簀２の外方Ｒへのばね力を作用する第１ねじりばね４６とを有することを特徴とする。 In the present invention, the light shielding sheet supporting means 4
A plurality of support posts 29 arranged at intervals in the circumferential direction of the ginger frame 7, each support post 29 being connected to the ginger frame 7 via the first hinge 25, extending vertically, and the light shielding sheet 3 being A support post 29 provided;
The first torsion spring 46 is provided on the first hinge 25 and has a first torsion spring 46 that applies a spring force to the outer side R of the ginger 2 .

本発明に従えば、第１ねじりばね４６が、遮光シート３を支持する支柱２９に作用する生簀２の内方への力に対し、逆方向に力を作用するので、支柱２９に装着された遮光シート３に作用する張力を維持することができ、遮光シート３の装着状態をより安定的に維持することができる。また、遮光シート３が生簀２の内方に風圧を受けたとしても、支柱２９の生簀２の内方への変位を防止することができ、遮光シート３が生簀２内に入って養殖魚に絡まるなどの危険はない。 According to the present invention, the first torsion spring 46, a force inward of the cage 2 which acts on the strut 29 supporting the light-shielding sheet 3 against, because they act a force in the opposite direction, mounted to the post 29 can maintain the tension acting on the light-shielding sheet 3, it is possible to maintain the mounted state of the light shielding sheet 3 more stably. Further, even if the light shielding sheet 3 received a wind pressure to the inside of the cage 2, inward displacement into cages 2 posts 29 can be prevented, and light shielding sheet 3 in farmed fish falls within cages 2 There is no danger of tangling.

本発明は、第１ねじりばね４６は、第１コイル部４５を有し、
第１ヒンジ２５は、
一端部が支柱２９に連結され、他端部に第１軸筒部４１ａ，４１ｂが形成される第１連結部材４２と、
一端部が生簀枠７に連結され、他端部に第２軸筒部４３ａ，４３ｂが形成される第２連結部材４４と、
第１連結部材４２の第１軸筒部４１ａ，４１ｂと、第２連結部材４４の第２軸筒部４３ａ，４３ｂと、第１ねじりばね４６の第１コイル部４５とを挿通する第１軸部材４７とを含むことを特徴とする。 In the present invention, the first torsion spring 46 has a first coil portion 45,
The first hinge 25 is
A first connecting member 42 having one end connected to the support column 29 and first shaft cylinders 41a and 41b formed on the other end;
A second connecting member 44 having one end connected to the ginger frame 7 and the other end formed with second shaft cylinders 43a and 43b;
A first shaft that passes through the first shaft tube portions 41 a and 41 b of the first connection member 42, the second shaft tube portions 43 a and 43 b of the second connection member 44, and the first coil portion 45 of the first torsion spring 46. And a member 47 .

本発明に従えば、第１軸部材４７を軸として、第１連結部材４２と第２連結部材４４とが角変位可能であり、第１ねじりばね４６が、生簀２の内方への力に対して、逆方向にばね力を作用する。これによって、遮光シート３に張力を作用してその装着状態をより安定的に維持することができる。 According to the present invention, the first connecting member 42 and the second connecting member 44 are angularly displaceable with the first shaft member 47 as an axis, and the first torsion spring 46 is subjected to an inward force of the ginger 2. On the other hand, a spring force acts in the opposite direction. This can act to tension the screen sheet 3 to maintain the mounted state of its more stably.

本発明は、第２ねじりばね６６は、第２コイル部６５を有し、
第２ヒンジ２６は、
一端部が支持部材５に連結され、他端部に第３軸筒部６１ａ，６１ｂが形成される第３連結部材６２と、
一端部が生簀枠７に連結され、他端部に第４軸筒部６３ａ，６３ｂが形成される第４連結部材６４と、
第３連結部材６２の第３軸筒部６１ａ，６１ｂと、第４連結部材６４の第４軸筒部６３ａ，６３ｂと、第２コイル部６５とを挿通する第２軸部材６７とを含むことを特徴とする。 In the present invention, the second torsion spring 66 has a second coil portion 65,
The second hinge 26 is
A third connecting member 62 having one end connected to the support member 5 and third shaft cylinders 61a and 61b formed at the other end;
A fourth connecting member 64 having one end connected to the ginger frame 7 and the other end formed with fourth shaft cylinders 63a and 63b;
Including third shaft cylinder portions 61 a and 61 b of the third connecting member 62, fourth shaft cylinder portions 63 a and 63 b of the fourth connecting member 64, and a second shaft member 67 through which the second coil portion 65 is inserted. It is characterized by.

本発明に従えば、第２軸部材６７を軸として、第３連結部材６２と第４連結部材６４とが角変位可能であり、第２ねじりばね６６が、支持部材５の上方への力に対して、逆方向にばね力を作用する。これによって、遮光シート３の装着状態をより安定的に維持することができる。 According to the present invention, the third connecting member 62 and the fourth connecting member 64 are angularly displaceable about the second shaft member 67 as an axis, and the second torsion spring 66 is subjected to the upward force of the support member 5. On the other hand, a spring force acts in the opposite direction. Thereby, the mounting state of the light shielding sheet 3 can be maintained more stably.

本発明は、支持部材５に、重錘８３が設けられることを特徴とする。
本発明に従えば、支持部材５に重錘８３が設けられるので、支持部材５に作用する上方への力に対して、逆方向に重錘８３の重力が作用する。これによって、遮光シート３の装着状態をより安定的に維持することができる。 The present invention is characterized in that a weight 83 is provided on the support member 5 .
According to the present invention, since Jutsumu 83 is provided on supporting support member 5, with respect to upward force acting on the supporting support member 5, the gravity of Jutsumu 83 in the opposite direction acts. Thereby, the mounting state of the light shielding sheet 3 can be maintained more stably.

本発明によれば、生簀の上部に遮光シートが設けられることによって、生簀近辺を通過する自動車または漁船からの可視光を遮断することができ、好適な養殖環境を実現することができる。 According to the present invention, by providing the light shielding sheet on the top of the ginger, visible light from an automobile or a fishing boat passing near the ginger can be blocked, and a suitable aquaculture environment can be realized.

また、本発明によれば、引張りばね６が、遮光シート支持手段４の支柱２９に装着された遮光シート３に張力を作用し、遮光シート３の装着状態をより安定的に維持することができる。また、遮光シート３が生簀２の内方に風圧を受けるなどの外力を受けたとしても、引張りばね６が、遮光シート３に作用する生簀２の内方への力に対して、ばね力を作用するので、遮光シート３の生簀２の内方への変位を防止することができる。この結果、好適な養殖環境を実現することができる。 Further, according to the present invention, the tension spring 6 applies tension to the light shielding sheet 3 attached to the support column 29 of the light shielding sheet supporting means 4, and the attached state of the light shielding sheet 3 can be maintained more stably. . Even if the light shielding sheet 3 receives an external force such as receiving wind pressure inside the ginger 2 , the tension spring 6 applies a spring force to the inward force of the ginger 2 acting on the light shielding sheet 3. because they act, it is possible to prevent inward displacement of the of the cage 2 in the light shielding sheet 3. As a result, a suitable aquaculture environment can be realized.

さらに、本発明によれば、支持部材５に支持部材用フロート３８ａ，３８ｂが取り付けられるので、支持部材５に浮力が与えられ、一定の高さを維持することができる。 Furthermore, according to the present invention, the support member for the float 38a in supporting support member 5, because 38b is attached, buoyancy is given to the supporting support member 5, it is possible to maintain a constant height.

さらに、本発明によれば、第１ねじりばね４６が、遮光シート３を支持する支柱２９に作用する生簀２の内方への力に対して、逆方向に力を作用するので、支柱２９に装着された遮光シート３に作用する張力を維持することができ、遮光シート３の装着状態をより安定的に維持することができる。また、遮光シート３が生簀２の内方に風圧を受けたとしても、支柱２９の生簀２の内方への変位を抑えることができ、遮光シート３が生簀２内に入って養殖魚に絡まるなどの危険はない。 Furthermore, according to the present invention, the first torsion spring 46, against the force of the inside of the cage 2 which acts on the strut 29 supporting the light-shielding sheet 3, since a force in the opposite direction, the post 29 can maintain the tension acting on the light shielding sheet 3 attached, it is possible to maintain the mounted state of the light shielding sheet 3 more stably. Further, even if the light shielding sheet 3 received a wind pressure to the inside of the cage 2, the displacement inward of cage 2 posts 29 can be suppressed, light-shielding sheet 3 entangled farmed fish falls within cages 2 There is no danger.

本発明によれば、第１軸部材４２を軸として、第１連結部材４２と第２連結部材４４とが角変位可能であり、第１ねじりばね４６が、生簀２の内方への力に対して、逆方向にばね力を作用する。これによって、遮光シート３に張力を作用してその装着状態をより安定的に維持することができる。 According to the present invention, the first connecting member 42 and the second connecting member 44 are angularly displaceable with the first shaft member 42 as an axis, and the first torsion spring 46 is subjected to an inward force of the ginger 2. On the other hand, a spring force acts in the opposite direction. This can act to tension the screen sheet 3 to maintain the mounted state of its more stably.

本発明によれば、第２軸部材６７を軸として、第３連結部材６２と第４連結部材６４とが角変位可能であり、第２ねじりばね６６が、支持部材５の上方への力に対して、逆方向に力を作用する。これによって、遮光シート３の装着状態をより安定的に維持することができる。 According to the present invention, the third connecting member 62 and the fourth connecting member 64 are angularly displaceable about the second shaft member 67 as an axis, and the second torsion spring 66 is subjected to an upward force on the support member 5. On the other hand, a force is applied in the opposite direction. Thereby, the mounting state of the light shielding sheet 3 can be maintained more stably.

本発明によれば、支持部材５に重錘８３が設けられるので、支持部材５に作用する上方への力に対して、逆方向に重錘８３の重力が作用する。これによって、遮光シート３の装着状態をより安定的に維持することができる。 According to the present invention, since Jutsumu 83 is provided on supporting support member 5, with respect to upward force acting on the supporting support member 5, the gravity of Jutsumu 83 in the opposite direction acts. Thereby, the mounting state of the light shielding sheet 3 can be maintained more stably.

図１は、本発明の実施の一形態である養殖装置１の全体の構成を示す斜視図である。養殖装置１は、クロマグロを養殖するための養殖装置であり、海岸付近の水域に設けられる。本実施の形態である養殖装置１は、基本的には、生簀２と、可視光を遮断する遮光シート３と、遮光シート３を支持する遮光シート支持手段４と、生簀２の外方に延びる第１支持部材５と、遮光シート支持手段４と第１支持部材５とに連結される第１ばね部材６とから構成される。 FIG. 1 is a perspective view showing an overall configuration of an aquaculture device 1 according to an embodiment of the present invention. The aquaculture apparatus 1 is an aquaculture apparatus for cultivating bluefin tuna, and is provided in a water area near the coast. The aquaculture apparatus 1 according to the present embodiment basically has a ginger 2, a light shielding sheet 3 that blocks visible light, a light shielding sheet support means 4 that supports the light shielding sheet 3, and extends outward from the ginger 2. The first support member 5 includes a light shielding sheet support unit 4 and a first spring member 6 connected to the first support member 5.

生簀２は、上部が開放された円筒形の養殖空間を有し、上部が水面上付近に位置するように浮設される。生簀２の上部には、環状の鉄製の生簀枠７が設けられる。生簀枠７は、生簀２の軸線Ｘ方向に間隔をあけて設けられる２つの環状枠８，９と、下方の環状枠９の外方に、生簀２の軸線Ｘの半径方向に間隔をあけて設けられる１つの環状枠１０と、これらの環状枠８，９，１０に沿って生簀２の軸線Ｘまわりに一定の間隔をあけた複数の位置に設けられ、環状枠を互いに連結する環状枠連結部材１１とから構成される。生簀枠７の内側の環状枠８，９の直径は、約３０ｍであり、外側の環状枠１０の直径は、約３１ｍである。環状枠連結部材１１は、上方内側の環状枠８から下方外側の環状枠１０に向かって斜めに延びるように形成される斜め連結部材１２と、下方内側の環状枠９から上方内側の環状枠８に向かって軸線Ｘ方向に立ち上がるように形成される立ち上がり連結部材１３と、下方内側の環状枠９から下方外側の環状枠１０に向かって生簀２の軸線Ｘの半径方向に延びるように形成される横連結部材１４とを含み、これらの３つの連結部材１２，１３，１４の各端の間に、両端を開放した継ぎ手部を形成してなる。各継ぎ手部に各環状枠８，９，１０を挿通することによって、環状枠８，９，１０が互いに連結される。本実施の形態において、これらの環状枠８，９，１０、および環状枠連結部材１１の断面形状は、円形であるが、四角形、またはその他の多角形であってもよい。本実施の形態において、生簀枠７は、鉄製であるが、ステンレス鋼など、その他の金属でもよい。また、生簀枠７の大きさ、形状、構成は、養殖する魚の種類に応じて、適宜選択することができる。 The ginger 2 has a cylindrical aquaculture space with an open top, and is buoyed so that the top is located near the water surface. An annular iron ginger frame 7 is provided on the top of the ginger 2. The ginger frame 7 is spaced apart in the radial direction of the axis X of the ginger 2 on the outside of the two annular frames 8 and 9 provided at intervals in the axis X direction of the ginger 2 and the lower annular frame 9. One annular frame 10 provided, and an annular frame coupling that is provided at a plurality of positions spaced around the axis X of the ginger 2 along these annular frames 8, 9, 10 and connects the annular frames to each other The member 11 is comprised. The diameter of the inner annular frames 8 and 9 of the ginger frame 7 is about 30 m, and the diameter of the outer annular frame 10 is about 31 m. The annular frame connecting member 11 includes an oblique connecting member 12 formed so as to extend obliquely from the upper inner annular frame 8 toward the lower outer annular frame 10, and the upper inner annular frame 8 from the lower inner annular frame 9. And a rising connecting member 13 formed so as to rise in the direction of the axis X toward the upper side, and extending from the lower inner annular frame 9 toward the lower outer annular frame 10 in the radial direction of the axis X of the ginger 2. A joint portion is formed between both ends of the three connecting members 12, 13, 14 including the lateral connecting member 14. The annular frames 8, 9, 10 are connected to each other by inserting the annular frames 8, 9, 10 through the joint portions. In the present embodiment, the cross-sectional shapes of the annular frames 8, 9, 10 and the annular frame connecting member 11 are circular, but may be quadrangular or other polygonal shapes. In the present embodiment, the ginger frame 7 is made of iron, but may be other metals such as stainless steel. In addition, the size, shape, and configuration of the ginger frame 7 can be appropriately selected according to the type of fish to be cultivated.

生簀枠７の内側の２つの環状枠８，９には、生簀２の軸線Ｘまわりに合成樹脂製の円筒状の側部網１５の上端が取り付けられる。側部網１５の下端には、内外２重の金属製の環状枠１６，１７からなる底枠１８が取り付けられる。底枠１８の水面からの深さは、約８〜１０ｍである。底枠１８の内側の環状枠１６の枠内に、合成樹脂製の底部網１９が架設される。側部網１５の下部は、底部網１９によって塞がれ、側部網１５と底部網１９とで、上部を開放した円筒状の養殖空間が形成される。底枠１８の内外の環状枠１６，１７の間には、複数のロープ２１が架橋される。底枠１８の外側の環状枠１７は、生簀枠７の外側の環状枠１０に、複数のロープ２２を用いて連結される。 The upper ends of cylindrical side nets 15 made of synthetic resin are attached to the two annular frames 8 and 9 inside the ginger frame 7 around the axis X of the ginger 2. A bottom frame 18 made up of inner and outer double metal annular frames 16, 17 is attached to the lower end of the side net 15. The depth of the bottom frame 18 from the water surface is about 8 to 10 m. A synthetic resin bottom net 19 is installed in the frame of the annular frame 16 inside the bottom frame 18. The lower part of the side net 15 is closed by the bottom net 19, and the side net 15 and the bottom net 19 form a cylindrical aquaculture space with the top open. A plurality of ropes 21 are bridged between the inner and outer annular frames 16 and 17 of the bottom frame 18. The annular frame 17 outside the bottom frame 18 is connected to the annular frame 10 outside the ginger frame 7 using a plurality of ropes 22.

生簀枠７には、合成樹脂製の生簀用の複数の第１フロート２３が取り付けられる。これによって生簀枠７、したがって生簀２に浮力が与えられ、一定の高さを維持することができる。第１フロート２３は、縦断面形状が略楕円形状の、中空の内部が密閉された略楕円体であり、縦断面の長軸は、約７０ｃｍである。第１フロート２３は、生簀枠７の下方内側の環状枠９と、外側の環状枠１０との間に配置され、第１フロート２３を固定するための帯状の第１フロート固定部材２４によって、両環状枠９，１０に緊縛される。第１フロート固定部材２４は、ねじ止めされることによって、第１フロート２３に固定される。これによって、本実施の形態において、生簀２は、生簀枠７の下方の環状枠９，１０が水面上付近に位置するように浮設される。 A plurality of first floats 23 made of synthetic resin are attached to the ginger frame 7. Thereby, buoyancy is given to the ginger frame 7, and thus the ginger 2, and a constant height can be maintained. The first float 23 is a substantially ellipsoid whose longitudinal section is substantially elliptical and whose hollow interior is sealed, and the major axis of the longitudinal section is about 70 cm. The first float 23 is disposed between the annular frame 9 on the lower inner side of the ginger frame 7 and the outer annular frame 10, and the first float 23 is fixed by the belt-shaped first float fixing member 24 for fixing the first float 23. It is bound to the annular frames 9 and 10. The first float fixing member 24 is fixed to the first float 23 by being screwed. Thereby, in this Embodiment, the ginger 2 is floated so that the cyclic | annular frames 9 and 10 below the ginger frame 7 may be located in the water surface vicinity.

遮光シート３は、長手方向の長さが１２〜１３ｍ、長手方向と垂直な方向の長さが２〜３ｍの矩形の、黒色のシートであり、ポリエチレンまたはポリプロピレンなどのオレフィン系樹脂からなるフィルムを網目状に編んで形成される。本実施の形態においては、遮光シート３の上端は水面から約２ｍ上方に設けられ、下端は水面から約０．５〜１ｍ下方に設けられる。これにより、近隣を通過する自動車または漁船などのライトが生簀２内に入るのを遮断することができる。また、側部網１５よりも外方に配置されるので、遮光シート３が水圧を受け、下端が生簀２の内方に向かって変位したとしても、側部網１５を変形させることはないので、養殖環境を好適に維持することができる。遮光シート３の寸法および設置位置は、近隣を通過する自動車または漁船などのライトが入射し得る角度の範囲に応じて適宜選択される。また、本実施の形態において、遮光シート３の下端を水面から約０．５〜１ｍとしたが、好ましくは、遮光シート３が生簀２の内方に向かって変位しても、側部網１５に接触しない程度の長さにされる。遮光シート３の材料、および遮光率は、養殖魚の種類に応じて、適宜選択される。 The light shielding sheet 3 is a rectangular black sheet having a length in the longitudinal direction of 12 to 13 m and a length in the direction perpendicular to the longitudinal direction of 2 to 3 m, and is a film made of an olefin resin such as polyethylene or polypropylene. It is formed by knitting in a mesh shape. In the present embodiment, the upper end of the light shielding sheet 3 is provided approximately 2 m above the water surface, and the lower end is provided approximately 0.5 to 1 m below the water surface. Thereby, it is possible to block lights such as automobiles or fishing boats passing through the vicinity from entering the ginger 2. Moreover, since it arrange | positions outward rather than the side net | network 15, even if the light-shielding sheet 3 receives a water pressure and a lower end is displaced toward the inward side of the ginger 2, the side net | network 15 is not deformed. The aquaculture environment can be suitably maintained. The size and installation position of the light shielding sheet 3 are appropriately selected according to the range of angles at which lights such as automobiles or fishing boats passing through the vicinity can enter. Moreover, in this Embodiment, although the lower end of the light shielding sheet 3 was about 0.5-1 m from the water surface, Preferably, even if the light shielding sheet 3 is displaced toward the inside of the ginger 2, the side net 15 The length is such that it does not touch the surface. The material of the light shielding sheet 3 and the light shielding rate are appropriately selected according to the type of farmed fish.

遮光シート支持手段４は、生簀枠７の外側の環状枠１０に沿って、生簀２の軸線Ｘまわりにすなわち周方向に一定の間隔をあけて、複数の位置に連結される。本実施の形態において、遮光シート支持手段４は、生簀枠７の第１フロート２３の各固定位置に配置される。また、本実施の形態において、養殖装置１は、８つの遮光シート支持手段４を備えるが、遮光シート支持手段４の数、間隔および位置は、生簀枠７の形状、大きさ、または遮光シート３の大きさなどに応じて、適宜選択することができる。 The light shielding sheet support means 4 is connected to a plurality of positions along the annular frame 10 outside the ginger frame 7 around the axis X of the ginger 2, that is, at a certain interval in the circumferential direction . In the present embodiment, the light shielding sheet support means 4 is disposed at each fixed position of the first float 23 of the ginger frame 7. In this embodiment, the aquaculture apparatus 1 includes eight light shielding sheet support means 4, but the number, interval, and position of the light shielding sheet support means 4 are the shape and size of the ginger frame 7, or the light shielding sheet 3. It can be appropriately selected according to the size of the.

図２は図１の養殖装置１の一部を示す斜視図であり、図３は養殖装置１の一部を示す簡略化した縦断面図であり、図４は遮光シート支持手段４を示す簡略化した横断面図である。本実施の形態において、遮光シート支持手段４は、第１連結手段２５によって、生簀枠７の外側の環状枠１０と連結される。第１支持部材５は、第２連結手段２６によって、生簀枠７の遮光シート支持手段４との連結部２７の下方付近の連結部２８に連結される。 2 is a perspective view showing a part of the aquaculture apparatus 1 of FIG. 1, FIG. 3 is a simplified longitudinal sectional view showing a part of the aquaculture apparatus 1, and FIG. 4 is a simplified illustration showing the light shielding sheet support means 4. FIG. In the present embodiment, the light shielding sheet supporting means 4 is connected to the annular frame 10 outside the ginger frame 7 by the first connecting means 25. The first support member 5 is connected by a second connection means 26 to a connection portion 28 near the lower portion of the connection portion 27 of the ginger frame 7 with the light shielding sheet support means 4.

遮光シート支持手段４は、上下に延びる支柱２９と、支柱２９を支持する支柱受部材３０とから構成されている。支柱２９は、軸方向の長さが約２ｍの棒状のステンレス鋼からなるパイプである。支柱受部材３０は、軸方向の長さが約１ｍの、円筒状のステンレス鋼からなる部材である。支柱受部材３０は、上端面と、側面の一部とが開放されており、支柱２９の外径よりも大径の内径を有する。支柱２９の下端を支柱受部材３０の開放された上端側から挿入することによって、支柱２９を装着することができる。開放された側面の一部は、支柱受部材３０の正面にされる。支柱受部材３０の上端部付近の側面には、一対のアーチ状の連結部３１ａ，３１ｂが形成される。これらの連結部３１ａ，３１ｂに第１ばね部材６の一端部が連結される。 The light shielding sheet support means 4 includes a support column 29 extending vertically and a support member 30 that supports the support column 29. The support column 29 is a pipe made of rod-shaped stainless steel having an axial length of about 2 m. The column receiving member 30 is a member made of cylindrical stainless steel having an axial length of about 1 m. The column receiving member 30 is open at the upper end surface and part of the side surface, and has an inner diameter larger than the outer diameter of the column 29. The column 29 can be mounted by inserting the lower end of the column 29 from the opened upper end side of the column receiving member 30. A part of the opened side surface is the front surface of the column receiving member 30. A pair of arch-shaped connecting portions 31 a and 31 b are formed on the side surface near the upper end portion of the column receiving member 30. One end of the first spring member 6 is connected to the connecting portions 31a and 31b.

支柱２９の上端部付近の両側部と、中央部付近の両側部と、支柱受部材３０の下端部付近の両側部とに、それぞれ一対の突片３２，３３，３４が形成される。これらの突片３２，３３，３４に遮光シート３を繋着することによって、生簀枠７に沿って遮光シート３が遮光シート支持手段４に張架される。この結果、遮光シート３は、遮光シート支持手段４に装着された状態、すなわち装着状態となる。本実施の形態において、支柱２９および支柱受部材３０は、ステンレス鋼からなるが、その他の金属でもよい。支柱２９および支柱受部材３０の寸法および形状は、遮光シート３の寸法などに応じて、適宜選択することができる。 A pair of projecting pieces 32, 33, and 34 are formed on both side portions near the upper end portion of the column 29, both side portions near the center portion, and both side portions near the lower end portion of the column receiving member 30, respectively. By connecting the light shielding sheet 3 to these projecting pieces 32, 33, and 34, the light shielding sheet 3 is stretched around the light shielding sheet support means 4 along the ginger frame 7 . As a result, the light shielding sheet 3 is in a state of being attached to the light shielding sheet support means 4, that is, in an attached state. In the present embodiment, the struts 29 and the strut receiving members 30 are made of stainless steel, but may be other metals. The dimensions and shapes of the support column 29 and the support column receiving member 30 can be appropriately selected according to the size of the light shielding sheet 3 and the like.

第１支持部材５は、断面形状が矩形であり、中空のステンレス鋼からなる角柱状の部材である。第１支持部材５は、基端部３５から生簀２の外方、かつ軸線Ｘに対して垂直な２つの方向に延びるように形成され、平面形状は略Ｖ字形状である。基端部３５から各遊端部３６ａ，３６ｂまでの距離は、約１ｍであり、２つの遊端部３６ａ，３６ｂの間隔は、約１ｍである。各遊端部３６ａ，３６ｂ付近の上面に、アーチ状の連結部３７ａ，３７ｂが形成される。これらの連結部３７ａ，３７ｂに、第１ばね部材６の、遮光シート支持手段４に連結された端部と反対側の端部が連結される。 The first support member 5 is a prismatic member made of hollow stainless steel having a rectangular cross-sectional shape. The first support member 5 is formed so as to extend from the base end portion 35 to the outside of the ginger 2 and in two directions perpendicular to the axis X, and the planar shape is substantially V-shaped. The distance from the base end part 35 to each free end part 36a, 36b is about 1 m, and the distance between the two free end parts 36a, 36b is about 1 m. Arch-shaped connecting portions 37a and 37b are formed on the upper surfaces in the vicinity of the free end portions 36a and 36b. The ends of the first spring member 6 opposite to the ends connected to the light shielding sheet supporting means 4 are connected to the connecting portions 37a and 37b.

第１支持部材５の各遊端部３６ａ，３６ｂ付近には、合成樹脂製の支持部材用の第２フロート３８ａ，３８ｂが取り付けられる。これらの第２フロート３８ａ，３８ｂの平面形状は円形であり、縦断面形状が楕円形の長軸を切断してなる半楕円形状の、中空の密閉された半楕円体である。縦断面の長軸は、約３０ｃｍである。第２フロート３８ａ，３８ｂは、上面を第１支持部材５の下面に当接させた状態で、第２フロート３８ａ，３８ｂを固定するための帯状の第２フロート固定部材３９ａ，３９ｂを、第１支持部材５の連結部３７ａ，３７ｂに挿通し、かつ緊縛することによって、第１支持部材５に固定される。これによって、第１支持部材５に浮力が与えられ、第１支持部材５を一定の高さ、すなわち水上に維持することができる。第２フロート３８ａ，３８ｂの固定方法は、その他の方法を用いてもよい。 In the vicinity of the free end portions 36a and 36b of the first support member 5, second floats 38a and 38b for support members made of synthetic resin are attached. The planar shape of the second floats 38a and 38b is a circular shape, and is a semi-elliptical, hollow, hermetically sealed semi-ellipsoid formed by cutting the long axis having an elliptical cross-sectional shape. The long axis of the longitudinal section is about 30 cm. The second floats 38a and 38b are provided with belt-like second float fixing members 39a and 39b for fixing the second floats 38a and 38b, with the upper surfaces being in contact with the lower surface of the first support member 5. It is fixed to the first support member 5 by being inserted into and tightened to the connecting portions 37a and 37b of the support member 5. Thereby, buoyancy is given to the 1st support member 5, and the 1st support member 5 can be maintained on fixed height, ie, water. Other methods may be used for fixing the second floats 38a and 38b.

第１支持部材５の寸法は、遮光シート支持手段４の寸法に応じて、適宜選択される。本実施の形態において、第１支持部材５の形状は、基端部３５から延びる方向が２つであり、平面形状が略Ｖ字形状であるけれども、基端部３５から延びる方向を３つ以上とする形状であってもよい。また、第１支持部材５の縦断面形状は、円形など、他の形状にしてもよい。本実施の形態において、第１支持部材５は、ステンレス鋼からなるが、その他の金属でもよい。 The dimension of the first support member 5 is appropriately selected according to the dimension of the light shielding sheet support means 4. In the present embodiment, the first support member 5 has two directions extending from the base end portion 35 and has a substantially V-shaped planar shape, but has three or more directions extending from the base end portion 35. The shape may be as follows. Moreover, you may make the longitudinal cross-sectional shape of the 1st support member 5 into other shapes, such as circular. In the present embodiment, the first support member 5 is made of stainless steel, but may be other metals.

図２および図３に示すように、第１支持部材５には、重錘手段８２が設けられる。重錘手段８２は、重錘８３と、重錘８３を保持する重錘保持部材８４とを含む。重錘８３は、軸線方向に垂直な仮想平面における断面の形状が円形であり、軸線に沿って貫通孔を有する円筒状の部材である。重錘８３は、比重の比較的大きい金属からなり、たとえば、鉄またはステンレス鋼が用いられる。重錘保持部材８４は、ステンレス鋼からなる細長い棒状の部材である。重錘保持部材８４の軸線方向に垂直な仮想平面における断面の形状は円形であり、重錘８３の貫通孔の内径よりも小さい外径を有する。重錘保持部材８４は、重錘８３を保持するに適した構成を適宜選択することができ、また、その材料は、その他の金属であってもよく、またはロープであってもよい。 As shown in FIGS. 2 and 3, the first support member 5 is provided with weight means 82. The weight means 82 includes a weight 83 and a weight holding member 84 that holds the weight 83. The weight 83 is a cylindrical member having a circular cross section in a virtual plane perpendicular to the axial direction and having a through hole along the axial line. The weight 83 is made of a metal having a relatively large specific gravity, and for example, iron or stainless steel is used. The weight holding member 84 is an elongated rod-shaped member made of stainless steel. The cross-sectional shape in a virtual plane perpendicular to the axial direction of the weight holding member 84 is circular, and has an outer diameter smaller than the inner diameter of the through hole of the weight 83. A configuration suitable for holding the weight 83 can be appropriately selected for the weight holding member 84, and the material thereof may be other metal or a rope.

本実施の形態において、重錘８３は、重錘保持部材８４を重錘８３の貫通孔に挿通することによって、重錘保持部材８４に保持される。重錘保持部材８４は、両端部をそれぞれ、第１支持部材５の各遊端部３６ａ，３６ｂ付近の側面に固定することによって、第１支持部材５に連結される。こうして、重錘手段８２は、第１支持部材５に設けられる。これによって、第１支持部材５に作用する上方への力に対して、逆方向に重錘手段８２の重力が作用する。この結果、遮光シート３の装着状態をより安定的に維持することができる。 In the present embodiment, the weight 83 is held by the weight holding member 84 by inserting the weight holding member 84 into the through hole of the weight 83. The weight holding member 84 is coupled to the first support member 5 by fixing both end portions to the side surfaces of the first support member 5 near the free end portions 36a and 36b. Thus, the weight means 82 is provided on the first support member 5. Thereby, the gravity of the weight means 82 acts in the opposite direction against the upward force acting on the first support member 5. As a result, the mounting state of the light shielding sheet 3 can be maintained more stably.

重錘保持部材８４の両端部の固定位置は、重錘８３の重力が第１支持部材５に作用するように、適宜選択することができる。また、重錘８３は、第１支持部材５が第２フロート３８ａ，３８ｂの浮力により水上に維持される状態において水上に位置するように保持される。 The fixing positions of both ends of the weight holding member 84 can be appropriately selected so that the gravity of the weight 83 acts on the first support member 5. Further, the weight 83 is held so as to be positioned on the water in a state where the first support member 5 is maintained on the water by the buoyancy of the second floats 38a and 38b.

第１支持部材５に作用する重錘手段８２の重力は、好ましくは、第２フロート３８ａ，３８ｂが第１支持部材５に与える浮力と均衡するように設定される。必要に応じて、重錘保持部材８４に保持される重錘８３の数を増減させることによって、第１支持部材５に作用する重力を調整することも可能である。 The gravity of the weight means 82 acting on the first support member 5 is preferably set so as to balance the buoyancy that the second floats 38a, 38b impart to the first support member 5. It is also possible to adjust the gravity acting on the first support member 5 by increasing or decreasing the number of weights 83 held by the weight holding member 84 as necessary.

重錘８３が重錘保持部材８４の両端部を第１支持部材５に固定する方法は、適宜選択され、たとえば、溶接、ねじ止めなどである。また、固定後に重錘８３を追加または除去することによって第１支持部材５に作用する力を調節可能とするために、重錘保持部材８４の両端部は着脱自在に固定されてもよい。 The method by which the weight 83 fixes both ends of the weight holding member 84 to the first support member 5 is selected as appropriate, for example, welding, screwing, or the like. Further, both ends of the weight holding member 84 may be detachably fixed so that the force acting on the first support member 5 can be adjusted by adding or removing the weight 83 after fixing.

第１ばね部材６は、ステンレス鋼線からなる引張コイルばねである。両端部の形状は、略Ｊ字状に形成される。第１ばね部材６は、支柱受部材５のアーチ状の各連結部３１ａ，３１ｂと、第１支持部材５の各遊端部３６ａ，３６ｂ付近に設けられたアーチ状の各連結部３７ａ，３７ｂとの間で張架される。遮光シート３が風圧を受けるなど、遮光シート支持手段４が生簀２の内方に、たとえば図２および図３における矢印Ｐの方向に力を受けた場合に、第１ばね部材６は、遮光シート支持手段４から第１支持部材５の遊端部３６ａ，３６ｂ付近に向かう方向に引張力を作用する。これによって、遮光シート支持手段４に張架された遮光シート３に張力を作用し、遮光シート３の装着状態をより安定的に維持することができる。本実施の形態において、第１ばね部材６の材料として、ステンレス鋼線を用いたが、その他の引張ばねに用いられる材料であってもよく、たとえば、ばね鋼鋼材、硬鋼線などでもよい。 The first spring member 6 is a tension coil spring made of a stainless steel wire. The shape of both ends is substantially J-shaped. The first spring member 6 includes arch-shaped coupling portions 31a and 31b of the column receiving member 5 and arch-shaped coupling portions 37a and 37b provided in the vicinity of the free end portions 36a and 36b of the first support member 5. It is stretched between. When the light shielding sheet supporting means 4 receives a force inward of the ginger 2, for example, in the direction of arrow P in FIGS. 2 and 3, such as when the light shielding sheet 3 receives wind pressure, the first spring member 6 A tensile force is applied in a direction from the support means 4 to the vicinity of the free ends 36a and 36b of the first support member 5. As a result, tension is applied to the light shielding sheet 3 stretched around the light shielding sheet supporting means 4, and the mounting state of the light shielding sheet 3 can be maintained more stably. In the present embodiment, a stainless steel wire is used as the material of the first spring member 6, but it may be a material used for other tension springs, for example, a spring steel material, a hard steel wire, or the like.

本実施の形態において、第１支持部材５の遊端部３６ａ，３６ｂは、２つであり、２つの第１ばね部材６の各一端部が、各遊端部３６ａ，３６ｂに形成された連結部３７ａ，３７ｂに連結される。これにより、第１ばね部材６は、遮光シート支持手段４に作用する多方向への力に対して、逆方向にばね力を作用することができ、遮光シート３の装着状態をより安定的に維持することができる。第１ばね部材６の数は、第１支持部材５の連結部３７の数、すなわち第１支持部材５の基端部３５から延びる方向の数に応じて、適宜選択される。また、第１ばね部材６の両端部の連結位置、すなわち、支柱受部材３０に設けられる連結部３１ａ，３１ｂおよび第１支持部材５の遊端部３６ａ，３６ｂ付近に設けられる連結部３７ａ，３７ｂの位置は、支柱受部材３０の形状および寸法、ならびに第１支持部材５の形状および寸法などに応じて、第１ばね部材６のばね力が好適に作用するように、適宜選択される。 In the present embodiment, there are two free end portions 36a, 36b of the first support member 5, and one end portions of the two first spring members 6 are connected to the free end portions 36a, 36b. It is connected to the portions 37a and 37b. As a result, the first spring member 6 can apply a spring force in the opposite direction to the multidirectional force acting on the light shielding sheet support means 4, and the mounting state of the light shielding sheet 3 can be made more stable. Can be maintained. The number of first spring members 6 is appropriately selected according to the number of connecting portions 37 of the first support member 5, that is, the number of directions extending from the base end portion 35 of the first support member 5. Further, the connecting positions of both end portions of the first spring member 6, that is, the connecting portions 31 a and 31 b provided in the column receiving member 30 and the connecting portions 37 a and 37 b provided in the vicinity of the free ends 36 a and 36 b of the first support member 5 The position is appropriately selected so that the spring force of the first spring member 6 is suitably applied according to the shape and size of the column support member 30 and the shape and size of the first support member 5.

図５は図３の領域Ａを示す簡略化した拡大断面図であり、図６は第１連結手段２５を示す斜視図であり、図７は第１連結手段２５を示す分解斜視図であり、図８は第２連結手段２６を示す斜視図であり、図９は第２連結手段２６を示す分解斜視図である。 5 is a simplified enlarged cross-sectional view showing a region A in FIG. 3, FIG. 6 is a perspective view showing the first connecting means 25, FIG. 7 is an exploded perspective view showing the first connecting means 25, FIG. 8 is a perspective view showing the second connecting means 26, and FIG. 9 is an exploded perspective view showing the second connecting means 26.

本実施の形態における第１連結手段２５は、ばね部材を備えたヒンジであり、一端部が支柱受部材３０の下端面４０に連結され、他端部に軸筒部４１ａ，４１ｂが形成される第１連結部材４２と、一端部が生簀枠７の外側の環状枠１０に連結され、他端部に軸筒部４３ａ，４３ｂが形成される第２連結部材４４と、コイル部４５を含む第２ばね部材４６と、第１連結部材４２の軸筒部４１ａ，４１ｂと第２連結部材４４の軸筒部４３ａ，４３ｂと第２ばね部材４６のコイル部４５とを挿通する第１軸部材４７とを含む。 The 1st connection means 25 in this Embodiment is a hinge provided with the spring member, One end part is connected with the lower end surface 40 of the support | pillar receiving member 30, and axial cylinder part 41a, 41b is formed in the other end part. The first connecting member 42 includes a first connecting member 42, one end connected to the annular frame 10 outside the ginger frame 7, and the other connecting portion formed with shaft tube portions 43 a and 43 b, and a coil portion 45. A first shaft member 47 that passes through the two spring members 46, the shaft tube portions 41 a and 41 b of the first connection member 42, the shaft tube portions 43 a and 43 b of the second connection member 44, and the coil portion 45 of the second spring member 46. Including.

本実施の形態において、第１連結部材４２は、ステンレス鋼からなる薄板である。第１連結部材４２の一端部には、支柱受部材３０の下端面に一方面を当接させて装着される取付部４８が設けられる。この取付部４８に連なって、一端から取付部４８の支柱受部材３０の下端面に当接する面に対して垂直に立ち上がる支持部４９が形成される。この支持部４９に連なって、取付部４８が設けられる側の反対側の端部に、円筒状の実質的に同一の内径を有する２つの軸筒部４１ａ，４１ｂが、軸線方向に間隔をあけて形成される。 In the present embodiment, the first connecting member 42 is a thin plate made of stainless steel. One end of the first connecting member 42 is provided with a mounting portion 48 that is mounted with one surface abutting against the lower end surface of the column support member 30. A support portion 49 that rises perpendicularly to the surface that contacts the lower end surface of the column receiving member 30 of the attachment portion 48 from one end is formed in continuation with the attachment portion 48. Two axial tube portions 41a and 41b having substantially the same inner diameter in a cylindrical shape are spaced apart in the axial direction at the end opposite to the side on which the mounting portion 48 is provided. Formed.

第１連結部材４２の取付部４８には、３つの開口部５０が互いに等間隔をあけて形成される。これらの開口部５０にねじ５１を挿通して、第１連結部材４２は、支柱受部材３０の下端面にねじ止めによって固定される。第１連結部材４２は、軸筒部４１ａ，４１ｂの軸線方向が支柱受部材３０の軸線方向に対して垂直であり、支柱受部材３０の正面方向に対して垂直となるように、支柱受部材３０に固定される。 Three openings 50 are formed in the attachment portion 48 of the first connecting member 42 at equal intervals. The first connecting member 42 is fixed to the lower end surface of the column receiving member 30 by screwing through the screws 51 through these openings 50. The first connecting member 42 has a column receiving member such that the axial direction of the shaft tube portions 41 a and 41 b is perpendicular to the axial direction of the column receiving member 30 and is perpendicular to the front direction of the column receiving member 30. 30 is fixed.

本実施の形態において、第２連結部材４４は、ステンレス鋼からなる薄板である。第２連結部材４４の一端部には、生簀枠７の外側の環状枠１０に一方面を当接させて装着される取付部５２が形成される。第２連結部材４４の取付部５２の表面形状は、環状枠１０の表面形状に合わせて形成され、本実施の形態の場合、曲面に形成される。この取付部５２に連なって、一端から、環状枠１０に取り付けた状態で生簀２の軸線Ｘの半径方向に立ち上がる支持部５３が形成される。この支持部５３に連なって、取付部５２が形成される側の反対側の端部に、円筒状の実質的に同一の内径を有する２つの軸筒部４３ａ，４３ｂが軸線方向に間隔をあけて形成される。第２連結部材４４の２つの軸筒部４３ａ，４３ｂの軸線方向の間隔、すなわち一方の軸筒部４３ａの内側の端と他方の軸筒部４３ｂの内側の端との距離は、第１連結部材４２の一方の軸筒部４１ａの外側の端から他方の軸筒部４１ｂの外側の端までの距離と同一にされる。 In the present embodiment, the second connecting member 44 is a thin plate made of stainless steel. At one end of the second connecting member 44, an attachment portion 52 is formed that is attached with one surface abutting against the annular frame 10 outside the ginger frame 7. The surface shape of the attachment portion 52 of the second connecting member 44 is formed in accordance with the surface shape of the annular frame 10, and in the case of the present embodiment, it is formed into a curved surface. A support portion 53 is formed that is connected to the attachment portion 52 and rises from one end in the radial direction of the axis X of the ginger 2 while being attached to the annular frame 10. Two axial tube portions 43a and 43b having substantially the same inner diameter with a cylindrical shape are spaced apart in the axial direction at the end opposite to the side on which the attachment portion 52 is formed, connected to the support portion 53. Formed. The distance in the axial direction between the two shaft tube portions 43a and 43b of the second connection member 44, that is, the distance between the inner end of one shaft tube portion 43a and the inner end of the other shaft tube portion 43b is the first connection The distance from the outer end of one shaft tube portion 41a of the member 42 to the outer end of the other shaft tube portion 41b is made the same.

第２連結部材４４の取付部５２には、３つの開口部５４が互いに等間隔をあけて形成される。これらの開口部５４にねじ８１を挿通して、第２連結部材４４は、生簀枠７の外側の環状枠１０に、第１フロート固定部材２４を介してねじ止めによって固定される。第２連結部材４４は、軸筒部４３ａ，４３ｂの軸線方向が生簀２の軸線Ｘの半径方向に対して垂直であり、かつ生簀２の軸線Ｘ方向に対して垂直となるように、生簀枠７に固定される。本実施の形態において、第２連結部材４４は、第１フロート固定部材２４を介して生簀枠７に固定されるが、遮光シート支持手段４および第１支持部材５が生簀枠７の第１フロート２３の固定位置に設けられない場合は、第１フロート固定部材２４を介さずに生簀枠７に固定される。 Three openings 54 are formed at equal intervals in the mounting portion 52 of the second connecting member 44. Screws 81 are inserted through these openings 54, and the second connecting member 44 is fixed to the annular frame 10 outside the ginger frame 7 by screwing via the first float fixing member 24. The second connecting member 44 has a ginger frame so that the axial direction of the shaft cylinder portions 43a and 43b is perpendicular to the radial direction of the axis X of the ginger 2 and perpendicular to the axis X direction of the ginger 2. 7 is fixed. In the present embodiment, the second connecting member 44 is fixed to the ginger frame 7 via the first float fixing member 24, but the light shielding sheet support means 4 and the first support member 5 are the first float of the ginger frame 7. In the case where it is not provided at the fixing position 23, it is fixed to the ginger frame 7 without the first float fixing member 24 interposed therebetween.

本実施の形態において、第１連結部材４２および第２連結部材４４は、ステンレス鋼からなるが、その他の金属であってもよい。 In the present embodiment, the first connecting member 42 and the second connecting member 44 are made of stainless steel, but may be other metals.

本実施の形態において、第２ばね部材４６は、ステンレス鋼線からなるねじりコイルばねであり、両端の腕部５５ａ，５５ｂがそれぞれ略Ｌ字状に屈曲される。自然状態における両端の腕部５５ａ，５５ｂの、コイル部４５の軸線に垂直な仮想平面における相対角度は、約９０度にされる。コイル部４５の軸線方向の長さは、第１連結部材４２の軸筒部間の距離と同一にされる。本実施の形態において、第２ばね部材４６の材料として、ステンレス鋼線を用いたが、その他のねじりばねに用いられる材料であってもよく、たとえば、硬鋼線などでもよい。 In the present embodiment, the second spring member 46 is a torsion coil spring made of a stainless steel wire, and the arm portions 55a and 55b at both ends are bent into a substantially L shape. The relative angle of the arm portions 55a and 55b at both ends in the natural state in a virtual plane perpendicular to the axis of the coil portion 45 is set to about 90 degrees. The length of the coil portion 45 in the axial direction is the same as the distance between the axial tube portions of the first connecting member 42. In the present embodiment, a stainless steel wire is used as the material of the second spring member 46, but it may be a material used for other torsion springs, for example, a hard steel wire.

第２連結部材４４の両軸筒部４３の間に、第１連結部材４２の両軸筒部４１ａ，４１ｂが、互いの軸線が一致するように配置される。第１連結部材４２の両軸筒部４１ａ，４１ｂの間に、第２ばね部材４６のコイル部４５が、互いの軸線が一致するように配置される。 Between the two axial tube portions 43 of the second connecting member 44, the two axial tube portions 41a and 41b of the first connecting member 42 are arranged so that their axes coincide with each other. The coil portions 45 of the second spring member 46 are arranged between the shaft tube portions 41a and 41b of the first connecting member 42 so that their axes coincide with each other.

第１軸部材４７は、ステンレス鋼からなる円柱状の部材であり、一端部に第１および第２連結部材４２，４４の軸筒部４１ａ，４１ｂ，４３ａ，４３ｂの内径よりも大径の外径を有する頭部５６が形成される。第１軸部材４７は、頭部５６が形成されていない側の端部５７から、第１連結部材４２の軸筒部４１ａ，４１ｂと、第２ばね部材４６のコイル部４５と、第２連結部材４４の軸筒部４３ａ，４３ｂとに挿通される。これによって、第１軸部材４７を軸として、第１連結部材４２と第２連結部材４４とが角変位可能となる。頭部５６が形成されていない側の端部５７には、第１および第２連結部材４２，４４の軸筒部４１，４３の内径よりも大径の外径を有し、頭部５６が形成されていない側の端部５７の外径と同一の内径を有し、第１軸部材４７を軸止めする環状の第１軸止め部材５８が装着される。これによって、第１軸部材４７の装着が確実にされる。本実施の形態において、第１軸部材４７および第１軸止め部材５８は、ステンレス鋼からなるが、その他の金属であってもよい。 The first shaft member 47 is a cylindrical member made of stainless steel, and has an outer diameter larger than the inner diameter of the shaft tube portions 41a, 41b, 43a, 43b of the first and second connecting members 42, 44 at one end. A head 56 having a diameter is formed. The first shaft member 47 includes, from the end portion 57 on the side where the head portion 56 is not formed, the shaft tube portions 41a and 41b of the first connection member 42, the coil portion 45 of the second spring member 46, and the second connection. The shaft 44 is inserted into the shaft tube portions 43 a and 43 b of the member 44. Thus, the first connecting member 42 and the second connecting member 44 can be angularly displaced with the first shaft member 47 as an axis. The end portion 57 on the side where the head portion 56 is not formed has an outer diameter larger than the inner diameter of the shaft tube portions 41 and 43 of the first and second connecting members 42 and 44, An annular first shaft locking member 58 that has the same inner diameter as the outer diameter of the end portion 57 on the side that is not formed and that fixes the first shaft member 47 is mounted. Thereby, the mounting of the first shaft member 47 is ensured. In the present embodiment, the first shaft member 47 and the first shaft stop member 58 are made of stainless steel, but may be other metals.

自然状態において、第２ばね部材４６は、一端部が第１連結部材４２の生簀２の内方に向かう面５９に当接し、他端部が第２連結部材４４の上方に向かう面６０に当接するように設けられる。第２ばね部材４６の自然状態における第１連結部材４２と第２連結部材４４との、第１軸部材４７の軸線に垂直な仮想平面における相対角度は、約９０度にされる。遮光シート支持手段４が力を受けることによって、第１連結部材４２が生簀２の内方に、第１軸部材４７の軸線まわりに角変位する場合、すなわち図５に示す矢印Ｑの方向に角変位する場合、第２ばね部材４６は、遮光シート支持手段４に作用する生簀２の内方への力に対して、逆方向、すなわち図５に示す矢印Ｒの方向（生簀２の外方）に、ばね力を作用する。 In the natural state, the second spring member 46 is in contact with a surface 59 of which one end is inward of the sacrifice 2 of the first connecting member 42 and the other end is in contact with the surface 60 of the second connecting member 44. It is provided to touch. The relative angle of the first connecting member 42 and the second connecting member 44 in the natural state of the second spring member 46 in the virtual plane perpendicular to the axis of the first shaft member 47 is about 90 degrees. When the light shielding sheet supporting means 4 receives a force, the first connecting member 42 is angularly displaced inward of the ginger 2 around the axis of the first shaft member 47, that is, in the direction of the arrow Q shown in FIG. when displaced, the second spring member 46, against the force of the inside of the cage 2 which act on the light-shielding sheet supporting means 4, a reverse, i.e. (outside the cage 2) the direction of the arrow R shown in FIG. 5 The spring force is applied to.

本実施の形態における第２連結手段２６は、ばね部材を備えたヒンジであり、一端部が第１支持部材５の基端部３５に連結され、他端部に軸筒部６１ａ，６１ｂが形成される第３連結部材６２と、一端部が生簀枠７の外側の環状枠１０に連結され、他端部に軸筒部６３ａ，６３ｂが形成される第４連結部材６４と、コイル部６５を含む第３ばね部材６６と、第３連結部材６２の軸筒部６１ａ，６１ｂと第４連結部材６４の軸筒部６３ａ，６３ｂと第３ばね部材６６のコイル部６５とを挿通する第２軸部材６７とを含む。 The 2nd connection means 26 in this Embodiment is a hinge provided with the spring member, one end part is connected with the base end part 35 of the 1st support member 5, and axial cylinder part 61a, 61b is formed in the other end part. A third connection member 62, a fourth connection member 64 having one end connected to the annular frame 10 outside the ginger frame 7 and the other end portions formed with shaft tube portions 63a and 63b, and a coil portion 65. A second shaft through which the third spring member 66 including the shaft tube portions 61a and 61b of the third connecting member 62, the shaft tube portions 63a and 63b of the fourth connecting member 64, and the coil portion 65 of the third spring member 66 are inserted. Member 67.

本実施の形態において、第３連結部材６２は、ステンレス鋼からなる薄板である。第３連結部材６２の一端部には、第１支持部材５の基端部３５に一方面を当接させて装着される取付部６８が形成される。この取付部６８に連なって、一端から取付部６８の第１支持部材５の基端部３５に当接する面に対して垂直に立ち上がる支持部６９が形成される。この支持部６９に連なって、取付部６８が設けられる側の反対側の端部に、円筒状の実質的に同一の内径を有する２つの軸筒部６１ａ，６１ｂが軸線方向に間隔をあけて形成される。 In the present embodiment, the third connecting member 62 is a thin plate made of stainless steel. An attachment portion 68 is formed at one end portion of the third connecting member 62 and attached to the base end portion 35 of the first support member 5 with one surface abutting against it. A support portion 69 that rises perpendicularly to the surface of the attachment portion 68 that comes into contact with the base end portion 35 of the first support member 5 is formed from one end of the attachment portion 68. Two axial tube portions 61a and 61b having substantially the same inner diameter in a cylindrical shape are spaced apart from each other in the axial direction at the end opposite to the side where the mounting portion 68 is provided. It is formed.

第３連結部材６２の取付部６８には、３つの開口部７０が互いに等間隔をあけて形成される。これらの開口部７０にねじ７１を挿通して、第３連結部材６２は、第１支持部材５の基端部３５にねじ止めによって固定される。第３連結部材は、軸筒部６１ａ，６１ｂの軸線方向が生簀２の軸線Ｘの半径方向に対して垂直であり、かつ生簀２の軸線Ｘ方向に対して垂直となるように、第１支持部材５に固定される。 Three openings 70 are formed at equal intervals in the attachment portion 68 of the third connecting member 62. The third connecting member 62 is fixed to the proximal end portion 35 of the first support member 5 by screwing through the screws 71 through these openings 70. The third connecting member has a first support so that the axial direction of the axial tube portions 61a and 61b is perpendicular to the radial direction of the axis X of the ginger 2 and perpendicular to the axial X direction of the ginger 2. It is fixed to the member 5.

第４連結部材６４は、ステンレス鋼からなる薄板である。第４連結部材６４の一端部には、生簀枠７の外側の環状枠１０に一方面を当接させて装着される取付部７１が設けられる。第４連結部材６４の取付部７１の環状枠１０に当接する面７２の形状は、環状枠１０の面の形状に合わせて形成され、本実施の形態においては、曲面に形成される。この取付部７１に連なって、一端から、環状枠１０に取り付けた状態で生簀２の軸線Ｘの半径方向に立ち上がる支持部７２が形成される。この支持部７２に連なって、取付部７１が形成される側の反対側の端部に、円筒状の実質的に同一の内径を有する２つの軸筒部６３ａ，６３ｂが軸線方向に間隔をあけて形成される。第４連結部材６４の軸筒部６３ａ，６３ｂの軸線方向の間隔、すなわち一方の軸筒部６３ａの内側の端と他方の軸筒部６３ｂの内側の端との距離は、第３連結部材６２の一方の軸筒部６１ａの外側の端から他方の軸筒部６１ｂの外側の端までの距離とは、同一にされる。 The fourth connecting member 64 is a thin plate made of stainless steel. One end portion of the fourth connecting member 64 is provided with a mounting portion 71 that is mounted with one surface abutting against the annular frame 10 outside the ginger frame 7. The shape of the surface 72 that contacts the annular frame 10 of the mounting portion 71 of the fourth connecting member 64 is formed in accordance with the shape of the surface of the annular frame 10, and is formed into a curved surface in the present embodiment. Continuing from the attachment portion 71, a support portion 72 is formed which rises from one end in the radial direction of the axis X of the ginger 2 while being attached to the annular frame 10. Two axial tube portions 63a and 63b having substantially the same inner diameter are formed at intervals in the axial direction at the end opposite to the side where the attachment portion 71 is formed. Formed. The distance between the axial direction of the axial tube portions 63a, 63b of the fourth connecting member 64, that is, the distance between the inner end of one axial tube portion 63a and the inner end of the other axial tube portion 63b is the third connecting member 62. The distance from the outer end of one shaft tube portion 61a to the outer end of the other shaft tube portion 61b is the same.

第４連結部材６４の取付部７１には、３つの開口部７３が互いに等間隔をあけて形成される。これらの開口部７３にねじ７４を挿通して、取付部７１は、生簀枠７の外側の環状枠１０に、第１フロート固定部材２４を介してねじ止めによって固定される。第４連結部材６４は、軸筒部６３ａ，６３ｂの軸線方向が生簀２の軸線Ｘの半径方向に対して垂直であり、かつ生簀２の軸線Ｘ方向に対して垂直となるように、生簀枠７に固定される。本実施の形態において、第４連結部材６４は、第１フロート固定部材２４を介して生簀枠７に固定されるが、遮光シート支持手段４および第１支持部材５が生簀枠７の第１フロート２３の固定位置に設けられない場合は、第１フロート固定部材２４を介さずに生簀枠７に固定される。 Three openings 73 are formed in the attachment portion 71 of the fourth connecting member 64 at equal intervals. Screws 74 are inserted through these openings 73, and the attachment portion 71 is fixed to the annular frame 10 outside the ginger frame 7 by screwing via the first float fixing member 24. The fourth connecting member 64 has a ginger frame such that the axial direction of the shaft cylinder portions 63a, 63b is perpendicular to the radial direction of the axis X of the ginger 2 and perpendicular to the axis X direction of the ginger 2. 7 is fixed. In the present embodiment, the fourth connecting member 64 is fixed to the ginger frame 7 via the first float fixing member 24, but the light shielding sheet support means 4 and the first support member 5 are the first float of the ginger frame 7. In the case where it is not provided at the fixing position 23, it is fixed to the ginger frame 7 without the first float fixing member 24 interposed therebetween.

本実施の形態において、第３連結部材６２および第４連結部材６４は、ステンレス鋼からなるが、その他の金属であってもよい。 In the present embodiment, the third connecting member 62 and the fourth connecting member 64 are made of stainless steel, but may be other metals.

本実施の形態において、第３ばね部材６６は、ステンレス鋼線からなるねじりコイルばねである。第３ばね部材６６の両端の腕部７５ａ，７５ｂは、それぞれ略Ｌ字状に屈曲される。自然状態における両端の腕部７５ａ，７５ｂの、コイル部６５の軸線方向に垂直な仮想平面における相対角度は、約１８０度にされる。コイル部６５の軸線方向の長さは、第３連結部材６２の軸筒部６１間の距離と同一にされる。本実施の形態において、第３ばね部材６６の材料として、ステンレス鋼線を用いたが、その他のねじりばねに用いられる材料であってもよく、たとえば、硬鋼線などでもよい。 In the present embodiment, the third spring member 66 is a torsion coil spring made of a stainless steel wire. The arm portions 75a and 75b at both ends of the third spring member 66 are bent in a substantially L shape. The relative angle between the arm portions 75a and 75b at both ends in the natural state in a virtual plane perpendicular to the axial direction of the coil portion 65 is about 180 degrees. The length of the coil portion 65 in the axial direction is the same as the distance between the shaft tube portions 61 of the third connecting member 62. In the present embodiment, a stainless steel wire is used as the material of the third spring member 66, but it may be a material used for other torsion springs, for example, a hard steel wire.

第４連結部材６４の両軸筒部６３ａ，６３ｂの間に、第３連結部材６２の両軸筒部６１ａ，６１ｂが、互いの軸線が一致するように配置される。第３連結部材６２の両軸筒部６１ａ，６１ｂの間に、第３ばね部材６６のコイル部６５が、互いの軸線が一致するように配置される。 Between the shaft cylindrical portions 63a and 63b of the fourth connecting member 64, the shaft cylindrical portions 61a and 61b of the third connecting member 62 are arranged so that their axes coincide with each other. The coil portions 65 of the third spring member 66 are arranged between the axial tube portions 61a and 61b of the third connecting member 62 so that their axes coincide with each other.

第２軸部材６７は、ステンレス鋼からなる円柱状の部材であり、一端部に、第３および第４連結部材６２，６４の軸筒部６１ａ，６１ｂ，６３ａ，６３ｂの内径よりも大径の外径を有する頭部７６が形成される。第２軸部材６７は、頭部７６が形成されていない側の端部７７から、第３連結部材６２の軸筒部６１ａ，６１ｂと、第４連結部材６４の軸筒部６３ａ，６３ｂと、第３ばね部材６６のコイル部６５とに挿通される。これによって、第２軸部材６７を軸として、第３連結部材６２と第４連結部材６４とが角変位可能となる。頭部７６が形成されていない側の端部７７には、第３および第４連結部材６２，６４の軸筒部６１，６３の内径よりも大径の外径を有し、頭部７６が形成されていない側の端部７７の外径と同一の内径を有し、第２軸部材６７を軸止めする環状の第２軸止め部材７８が装着される。これによって、第２軸部材６７の装着が確実にされる。本実施の形態において、第２軸部材６７および第２軸止め部材７８は、ステンレス鋼からなるが、その他の金属であってもよい。 The second shaft member 67 is a cylindrical member made of stainless steel, and has a diameter larger than the inner diameter of the shaft tube portions 61a, 61b, 63a, 63b of the third and fourth connecting members 62, 64 at one end. A head 76 having an outer diameter is formed. From the end 77 on the side where the head portion 76 is not formed, the second shaft member 67 includes shaft tube portions 61a and 61b of the third connection member 62, shaft tube portions 63a and 63b of the fourth connection member 64, The coil portion 65 of the third spring member 66 is inserted. Accordingly, the third connecting member 62 and the fourth connecting member 64 can be angularly displaced with the second shaft member 67 as an axis. The end portion 77 on the side where the head portion 76 is not formed has an outer diameter larger than the inner diameters of the shaft tube portions 61 and 63 of the third and fourth connecting members 62 and 64. An annular second shaft stopper member 78 that has the same inner diameter as the outer diameter of the end 77 on the side that is not formed and that fixes the second shaft member 67 is mounted. Thereby, the mounting of the second shaft member 67 is ensured. In the present embodiment, the second shaft member 67 and the second shaft locking member 78 are made of stainless steel, but may be other metals.

第３ばね部材６６は、自然状態において、一端部が第３連結部材６２の上方に向かう面７９に当接し、他端部が第４連結部材６４の上方に向かう面８０に当接するように設けられる。第３ばね部材６６の自然状態における第３連結部材６２と第４連結部材６４との、第２軸部材６７の軸線に垂直な仮想平面における相対角度は、約１８０度にされる。第１支持部材５が力を受けることによって、第３連結部材６２が、上方に、第２軸部材６７の軸線まわりに角変位する場合、すなわち図５に示す矢印Ｓの方向に角変位する場合、第３ばね部材６６は、第１支持部材５に作用する上方への力に対して、逆方向、すなわち図５に示す矢印Ｔの方向（下方）に作用する。 In the natural state, the third spring member 66 is provided so that one end thereof is in contact with the surface 79 facing the upper side of the third connecting member 62 and the other end is in contact with the surface 80 facing the upper side of the fourth connecting member 64. It is done. The relative angle of the third connecting member 62 and the fourth connecting member 64 in the natural state of the third spring member 66 in the virtual plane perpendicular to the axis of the second shaft member 67 is about 180 degrees. When the first support member 5 receives a force, the third connecting member 62 is angularly displaced upward around the axis of the second shaft member 67, that is, when the angular displacement is performed in the direction of the arrow S shown in FIG. The third spring member 66 acts in the opposite direction to the upward force acting on the first support member 5, that is, in the direction of arrow T shown in FIG. 5 (downward) .

本発明の実施の一形態である養殖装置１の全体の構成を示す斜視図である。It is a perspective view which shows the whole structure of the aquaculture apparatus 1 which is one Embodiment of this invention. 養殖装置１の一部を示す斜視図である。1 is a perspective view showing a part of an aquaculture device 1. FIG. 養殖装置１の一部を示す簡略化した縦断面図である。1 is a simplified longitudinal sectional view showing a part of an aquaculture device 1. FIG. 遮光シート支持手段４を示す簡略化した横断面図である。It is the simplified cross-sectional view which shows the light-shielding sheet support means 4. 図３の領域Ａを示す簡略化した拡大断面図である。FIG. 4 is a simplified enlarged cross-sectional view showing a region A in FIG. 3. 第１連結手段２５を示す斜視図である。FIG. 6 is a perspective view showing first connecting means 25. 第１連結手段２５を示す分解斜視図である。FIG. 4 is an exploded perspective view showing first connecting means 25. 第２連結手段２６を示す斜視図である。It is a perspective view which shows the 2nd connection means 26. FIG. 第２連結手段２６を示す分解斜視図である。FIG. 6 is an exploded perspective view showing the second connecting means 26.

Explanation of symbols

１養殖装置
２生簀
３遮光シート
４遮光シート支持手段
５第１支持部材
６第１ばね部材
７生簀枠
２５第１連結手段
２６第２連結手段
２９支柱
３０支柱受部材
３５第１支持部材の基端部
３６ａ，３６ｂ第１支持部材の遊端部
３８ａ，３８ｂ第２フロート
４２第１連結部材
４４第２連結部材
４６第２ばね部材
４７第１軸部材
６２第３連結部材
６４第４連結部材
６６第３ばね部材
６７第２軸部材
８２重錘手段 DESCRIPTION OF SYMBOLS 1 Aquaculture apparatus 2 Ginger 3 Shading sheet 4 Shading sheet support means 5 1st support member 6 1st spring member 7 Ginger frame 25 1st connection means 26 2nd connection means 29 Support | pillar
30 Prop receiving member 35 Base end portion 36a, 36b of first support member Free end portion 38a, 38b of first support member Second float 42 First connection member 44 Second connection member 46 Second spring member 47 First shaft member 62 Third connecting member 64 Fourth connecting member 66 Third spring member 67 Second shaft member 82 Weight means

Claims

(A) Ginger 2
The bottom of the cylindrical side net 15 is closed by the bottom net 19 to form an aquaculture space where the top is open,
A ginger 2 having a ginger float 23 which gives buoyancy to the ginger frame 7 to which the upper end of the side net 15 is attached;
(B) a light shielding sheet 3,
Outside the side net 19, it extends along the ginger frame 7 above and below the water surface of the aquaculture space, and the length from the bottom water surface is such that the lower end of the light shielding sheet 3 is displaced toward the inside of the ginger. Even if the light shielding sheet 3 is made so as not to come into contact with the side net 15,
(C) A fish farming apparatus comprising light shielding sheet support means 4 connected to the ginger frame 7 and supporting the light shielding sheet 3 .

The light shielding sheet support means 4
A plurality of support posts 29 arranged at intervals in the circumferential direction of the ginger frame 7, each support post 29 being connected to the ginger frame 7 via the first hinge 25, extending vertically, and the light shielding sheet 3 being A support post 29 provided;
A support member 5 connected to the ginger frame 7 via a second hinge 26 and extending outward of the ginger 2;
Support member floats 38a, 38b attached to the support member 5,
The fish farming apparatus according to claim 1, further comprising a tension spring (6) connected to the support column (29) and the support member (5) and acting on the light shielding sheet (3 ) .

The light shielding sheet support means 4 further includes:
A first torsion spring 46 that is provided on the first hinge 25 and acts on the support post 29 to apply a spring force to the outer side R of the ginger 2;
The fish farming apparatus according to claim 2 , further comprising a second torsion spring (66) provided on the second hinge (26) and acting on the support member (5) with a downward spring force .

The fish culture apparatus according to claim 2, wherein a weight 83 is provided on the support member 5 .

The light shielding sheet support means 4
A plurality of support posts 29 arranged at intervals in the circumferential direction of the ginger frame 7, each support post 29 being connected to the ginger frame 7 via the first hinge 25, extending vertically, and the light shielding sheet 3 being A support post 29 provided;
Provided in the first hinge 25, the posts 29, fish farming apparatus according to claim 1, characterized in that it has a first torsion spring 46 exerts a spring force outward R of cage 2.

The first torsion spring 46 has a first coil part 45,
The first hinge 25 is
A first connecting member 42 having one end connected to the support column 29 and first shaft cylinders 41a and 41b formed on the other end;
A second connecting member 44 having one end connected to the ginger frame 7 and the other end formed with second shaft cylinders 43a and 43b;
A first shaft that passes through the first shaft tube portions 41 a and 41 b of the first connection member 42, the second shaft tube portions 43 a and 43 b of the second connection member 44, and the first coil portion 45 of the first torsion spring 46. The fish culture apparatus according to claim 3 , further comprising a member 47 .

The second torsion spring 66 has a second coil portion 65,
The second hinge 26 is
A third connecting member 62 having one end connected to the support member 5 and third shaft cylinders 61a and 61b formed at the other end;
A fourth connecting member 64 having one end connected to the ginger frame 7 and the other end formed with fourth shaft cylinders 63a and 63b;
Including third shaft cylinder portions 61 a and 61 b of the third connecting member 62, fourth shaft cylinder portions 63 a and 63 b of the fourth connecting member 64, and a second shaft member 67 through which the second coil portion 65 is inserted. The fish culture apparatus according to claim 3 .