All-round multi-layer connection belt-lifted anti-rough sea deep sea net cage

Abstract

This invention provides a multi-layered, omnidirectional, lifting, and wave-resistant deep-sea cage, relating to the field of aquaculture equipment technology. It includes a cage body and a positioning mechanism for positioning and installing the cage body. The positioning mechanism includes a ring-shaped top frame and a top airbag mounted on the top frame to float the top frame on the water surface. The top frame is connected to multiple anchor bodies by multiple anchor ropes, each anchored to the seabed. Multiple tracks are vertically arranged at the bottom of the top frame in a ring array. The cage body is positioned between the tracks and can move up and down along the tracks within their length. This cage aims to solve the technical problems of existing deep-sea cages, such as poor wave resistance, susceptibility to damage, single-layer aquaculture space, low utilization rate, and inability to effectively avoid surface environmental risks.

Description

Technical Field

[0001] This invention relates to the field of aquaculture equipment technology, and in particular to a net cage for deep-sea aquaculture. Specifically, it is a wind and wave resistant deep-sea net cage that can avoid severe sea conditions by actively raising and lowering itself and can realize multi-layer three-dimensional aquaculture. Background Technology

[0002] Existing deep-sea cages are mainly floating or semi-submersible structures. The netting and frame structure of these cages are exposed to the ocean surface or subsurface for extended periods, directly bearing the combined effects of wind, waves, and currents. During strong typhoons or giant waves, the immense wave energy and impact of ocean currents can easily cause severe deformation of the cage frame, breakage at joints, and damage to the netting, leading to the escape of large numbers of farmed fish and causing devastating economic losses to aquaculture companies. Simultaneously, damaged cage structures may also pose a threat to maritime navigation safety and become marine debris.

[0003] In addition, traditional deep-sea cages are mostly single-layer, large-volume designs, which have the following drawbacks:

[0004] First, the utilization rate of aquaculture space is low. Although the volume of a single net cage is huge, the aquaculture method is still planar in terms of the projected area per unit sea area, failing to effectively utilize the three-dimensional water resources of the deep sea.

[0005] Secondly, surface environmental disasters cannot be avoided. In addition to wind and waves, the ocean surface may also experience unforeseen events that are detrimental to aquaculture, such as red tides, oil spills, and excessively high water temperatures in summer.

[0006] Furthermore, the fixed depth of traditional net cage operations makes it impossible to quickly transfer cultured organisms to safe deeper waters, resulting in extremely high risks for aquaculture. Therefore, designing a deep-sea net cage that can effectively resist or avoid severe sea conditions such as wind and waves while improving the utilization rate of aquaculture space is a pressing technical challenge that needs to be addressed in this field. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a multi-layered, omnidirectional, wave-resistant deep-sea cage with lifting mechanism. This cage aims to solve the technical problems of existing deep-sea cages, such as poor wave resistance, susceptibility to damage, single-layer aquaculture space, low utilization rate, and inability to effectively avoid surface environmental risks.

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a multi-layered, omnidirectional, lifting, wind-resistant deep-sea cage, comprising a cage body and a positioning mechanism for positioning and installing the cage body, the positioning mechanism comprising a ring-shaped top frame and a top airbag disposed on the top frame for floating the top frame on the water surface, the top frame being connected to multiple anchor bodies by multiple anchor ropes, each anchor body being anchored to the seabed, and multiple tracks being vertically arranged at the bottom of the top frame, the tracks being arranged in a ring array;

[0009] The cage body is located between the tracks and can move up and down along the tracks within the length range of the tracks. The cage body includes multiple layers of circular trusses, each layer of the truss is movably arranged on the tracks, each layer of the truss is provided with a lifting airbag, and netting is provided between adjacent trusses and on the inner side of each layer of the truss.

[0010] Furthermore, the track is provided with a groove along its length, and each layer of the truss is provided with an embedded block that is adapted to and slidably engaged with the groove.

[0011] Furthermore, the track is a circular tube structure, the groove is formed on its side wall, and the embedded block includes a cylindrical block adapted to the inner wall of the circular tube structure, and a connecting block that passes through the groove and connects the cylindrical block and the truss.

[0012] Furthermore, the top of the cage body is arranged in a circular array with multiple pull ropes connected to it. The end of each pull rope away from the cage body passes through the top frame and is connected to a windproof plate. The pull rope is connected to the middle of the windproof plate.

[0013] Furthermore, the top frame is provided with guide tubes in a radial direction, the number of which is the same as the number of pull ropes. The guide tubes lead to the top frame away from its axis, and each pull rope passes through the corresponding guide tube.

[0014] Furthermore, the windproof plate has a hollowed-out section, and multiple layers of lifting fins are arranged in the hollowed-out section. The upper surface of the lifting fins is curved, the lower surface is flat, and the cross-section is wing-shaped. A slot is provided at the position where the windproof plate connects to the pull rope, and the guide tube is inserted into the slot.

[0015] Furthermore, a counterweight is provided on the side of the windproof plate away from the hollowed-out portion.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The core advantage of this invention lies in its active risk avoidance capability. When encountering severe sea conditions such as typhoons, the overall buoyancy can be reduced by draining or venting the lifting airbags on the cage body, allowing the entire cage body to smoothly submerge along the track of the positioning mechanism to a deeper water area with less wind and waves. The positioning mechanism itself ensures positioning stability under severe sea conditions through multi-point anchoring and a ring-shaped floating frame. This design, which transforms passive resistance into active avoidance, fundamentally avoids direct confrontation between the cage structure and huge winds and waves, greatly improving the survival rate and safety of the cage and the aquaculture organisms.

[0018] This invention employs a multi-layered truss structure, expanding traditional planar aquaculture into a vertical "floor-style" aquaculture. Within the same sea area, the volume of aquaculture water can be increased several times, significantly improving the carrying capacity and final yield per unit area, resulting in substantial economic benefits. Furthermore, the multi-layered, independent aquaculture unit design enables precise management of the aquaculture process. Different fish species can be placed in the most suitable vertical water layers according to their ecological habits or different growth stages of the same species. This modular management also greatly facilitates harvesting operations, allowing for layer-by-layer, batch harvesting without disturbing fish at other levels, improving operational efficiency and market flexibility.

[0019] The lifting and lowering of the cage body in this invention is achieved by controlling the inflation and deflation of the lifting airbags on each layer of the truss, which is an active and precise buoyancy adjustment method. The cage body can be moved quickly and smoothly to any target depth as needed, not only to avoid wind and waves, but also to avoid red tides, surface oil pollution, or to find the optimal water temperature layer. The entire lifting and lowering process can be automated through a central control system, reducing the difficulty and risk of manual operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention (in its everyday posture);

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention (in the state of resisting wind and waves);

[0022] Figure 3 This is a schematic diagram of the overall structure of the positioning mechanism of the present invention;

[0023] Figure 4 This is a schematic diagram of the overall structure of the cage body of the present invention;

[0024] Figure 5 This is a detailed structural drawing of the windbreak panel of the present invention;

[0025] Figure 6 This is a detailed structural diagram of the lifting fins of the present invention.

[0026] In the diagram: 1. Top frame; 2. Top airbag; 3. Guide tube; 4. Anchor rope; 5. Anchor body; 6. Track; 7. Slide groove; 8. Truss; 9. Lifting airbag; 10. Embedded block; 11. Netting; 12. Pull rope; 13. Windproof plate; 1301. Hollow part; 1302. Lifting fin; 1303. Counterweight block. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Please see Figure 1-4 This embodiment provides an all-around multi-layered, liftable, wind- and wave-resistant deep-sea cage, which mainly consists of two parts: a positioning mechanism that provides a stable base on the sea surface, and a cage body that can be vertically lifted and lowered under the guidance of this base.

[0032] The core of the positioning mechanism is a massive annular top frame 1 made of high-strength, seawater-corrosion-resistant metal material (such as special alloy steel). The symmetrical annular top frame 1 can evenly withstand and disperse the impact of waves from all 360°, avoiding stress concentration. Multiple large-capacity top airbags 2, made of high-strength composite rubber, are fixed to the top frame 1. When inflated, they provide sufficient buoyancy, allowing the entire top frame 1 to float stably on the sea surface. The outer edge of the top frame 1 is connected to multiple heavy anchor bodies 5 (such as concrete anchor blocks or holding anchors) submerged on the seabed via multiple (e.g., six to eight) high-strength synthetic fiber anchor ropes 4. These anchor ropes 4 are taut from different directions, working together to firmly fix the top frame 1 at the preset coordinate position, effectively resisting horizontal displacement caused by ocean currents and regular waves.

[0033] Multiple parallel tracks 6 extend vertically downwards from the bottom inner edge of the annular top frame 1. These tracks 6 are also made of corrosion-resistant metal, and their surfaces can be specially treated to reduce friction. The tracks 6 are arranged in a circular array, together forming a virtual, robust cylindrical guide cage.

[0034] The net cage body is the main body of the aquaculture activity. It is composed of four or more layers of stacked annular trusses 8. Each layer of truss 8 is an independent structural unit, serving as the "skeleton" of that layer of net cage. These trusses 8 cooperate with the rails 6 of the positioning mechanism through movable connectors installed on them, allowing them to slide up and down along the rails 6. During this process, the guide cages formed by the rails 6 play a stabilizing role for the entire net cage body, effectively resisting the impact of lateral water flow on the net cage body.

[0035] Each truss 8 is surrounded by several lifting airbags 9. These airbags are connected via pipelines to a central air compressor and control valve system located on a surface platform or workboat. This system allows for the independent or unified inflation or deflation of any one or all of the lifting airbags 9. Specifically, by inflating or deflating the lifting airbags 9 of each layer through the control system, the total buoyancy of the entire net cage can be precisely adjusted. When submersion is required, water is drained (or air is expelled) from the airbags, making the total weight of the net cage greater than the buoyancy, causing it to sink smoothly along the track 6. When surfacing is required, air is inflated into the airbags, increasing the buoyancy to exceed the weight, causing the net cage to rise along the track 6.

[0036] Between adjacent truss layers 8, and at the innermost ring of each truss layer 8, high-strength, anti-aging, and biofouling-resistant polyethylene or ultra-high molecular weight polyethylene fiber netting 11 is installed. These netting 11 together enclose multiple isolated aquaculture spaces. For example, a four-truss net cage forms three independent aquaculture "floors" that can be managed separately.

[0037] When installing this invention, firstly, the entire device is deployed in a predetermined deep-sea area. Multiple anchor bodies 5 are thrown into the seabed and firmly grip the seabed. By tightening multiple anchor ropes 4, the positioning mechanism consisting of the annular top frame 1 and the top airbag 2 is stably fixed on the sea surface. The multiple vertical tracks 6 below it are ready for the movement of the net cage body. At this time, the net cage body can be installed between each track 6.

[0038] Under normal weather conditions, by inflating sufficient air into the lifting airbags 9 on each layer of the cage's truss 8, the cage gains enough buoyancy and floats to the sea surface or near the sea surface. At this time, the truss 8 of the cage is movably set on the track 6 of the positioning mechanism, allowing it to undulate slightly with the waves without being swept away by ocean currents, enabling aquaculture workers to carry out daily operations such as feeding and monitoring on the sea surface.

[0039] Upon receiving warnings of severe sea conditions such as typhoons or giant waves, the control system is activated. The system instructs the lifting airbag 9 to begin deflating (or expelling) water, causing the airbag to contract and rapidly reducing the total buoyancy of the net cage. When the total buoyancy is less than its own total weight, the net cage will descend smoothly and controllably vertically along the multiple vertical tracks 6 of the positioning mechanism. Due to the constraint and guidance of multiple circular array tracks 6, the descent process is very stable and will not capsize or rotate. The net cage will eventually descend to a preset deep water area (e.g., 30-50 meters underwater), where the water is almost unaffected by severe winds and waves on the surface, thus placing the fish inside the net cage and the net cage structure itself in a safe environment, achieving active risk avoidance.

[0040] Once the severe weather has passed, the control system reverses its operation. A high-pressure air pump inflates the lifting airbag 9, expelling the seawater and causing it to expand. This increases the total buoyancy of the net cage. When the total buoyancy exceeds the total weight, the net cage will rise smoothly along the track 6, eventually returning to its operating position on the sea surface.

[0041] Each lifting airbag 9 in this invention can be controlled independently, allowing for self-adjustment of the buoyancy of different layers of lifting airbags 9 as needed. When it is necessary to increase the distance between two layers of trusses 8, the control system inflates more air into the lifting airbag 9 above the target layer, increasing its buoyancy. As the upward buoyancy of this layer of trusses 8 increases, it moves upward along the track 6. Simultaneously, the lower truss 8, due to the reduced upward tension from the upper truss 8 (if the buoyancy of the lower truss 8 airbag does not increase significantly), moves downward relative to itself under the combined effects of its own weight and water flow, thus increasing the distance between the two layers of trusses 8. Conversely, to decrease the distance between two layers of trusses 8, the buoyancy of the lifting airbag 9 above the target layer is reduced (e.g., by expelling some air), while the buoyancy of the lower truss 8 lifting airbag 9 can be appropriately increased. This causes the upper truss 8 to move downward relative to itself under gravity, while the lower truss 8 moves upward relative to itself under the support of upward buoyancy, thereby reducing the distance between them. This feature greatly enhances the flexibility and adaptability of the cage. In actual aquaculture, different species and growth stages of fish may be raised in different culture layers, each with varying space requirements. For example, in the early stages of aquaculture, when the fish are smaller, the spacing between the truss beams (8) can be appropriately reduced to increase the stocking density and improve space utilization. As the fish grow and their size increases, the spacing between the truss beams (8) can be increased to provide them with more spacious activity space, preventing growth restriction or disease due to overcrowding. Furthermore, when dealing with complex and changing marine environments, such as abnormal water flow or temperature changes in certain areas, the spacing between the truss beams (8) of the corresponding culture layer can be quickly and specifically adjusted to change the flow rate and volume of water passing through the net cages, minimizing the adverse effects of the external environment on the farmed fish and ensuring the stability and sustainability of aquaculture activities.

[0042] Furthermore, because the net cage itself is divided into multiple independent vertical layers by the netting 11, aquaculture operators can perform precise management. For example, the upper layer can house adult fish that require more light, while the lower layer can house fry that are less sensitive to light. During harvesting, if only the adult fish in the third layer need to be harvested, the work vessel can operate directly on the third layer (e.g., using fish-attracting lights or a dedicated fish-suction pump), while the aquaculture activities in the first, second, and fourth layers remain completely unaffected. This modular operation method greatly simplifies the operational process and improves production efficiency.

[0043] Furthermore, such as Figure 3-4As shown, a groove 7 is provided along the length of the track 6, and each layer of truss 8 is equipped with an embedded block 10 that fits and slides within the groove 7. This structure ensures that the embedded block 10 always moves within the groove 7 as the truss 8 slides up and down along the track 6, providing a precise guiding path for the truss 8. Compared to a structure without this precise fit, the cage body can move more stably along the track 6 during lifting and lowering, avoiding problems such as swaying and deviation caused by inaccurate guidance, and ensuring the stability of the cage body's vertical lifting and lowering. Furthermore, the fit between the embedded block 10 and the groove 7 increases the connection points between the cage body and the positioning mechanism, making the connection between the two more robust. When the cage body is subjected to external forces such as ocean currents and waves, this robust connection can effectively transfer the external force to the positioning mechanism. The multiple anchor ropes 4 and heavy anchor bodies 5 of the positioning mechanism work together to resist the external force, preventing the cage body from shifting or being damaged due to a weak connection.

[0044] Furthermore, such as Figure 3-4 As shown, track 6 is a circular tube structure, with a groove 7 formed on its side wall. The embedded block 10 includes a cylindrical block adapted to the inner wall of the circular tube structure, and a connecting block that penetrates the groove 7 and connects the cylindrical block to the truss 8. The track 6 uses a circular tube structure, and the cylindrical block in the embedded block 10 adapts to the inner wall of the circular tube structure. This design allows the cylindrical block to fit tightly against the inner wall of the circular tube. During the lifting and lowering of the cage body, the cylindrical block, constrained by the inner wall of the circular tube, can move more stably along the track 6, effectively preventing the truss 8 from swaying or shifting on the track 6. Compared to other shapes of track 6 and embedded block 10, the combination of the circular tube and the cylindrical block provides a more uniform support force, further enhancing the stability of the cage body's lifting and lowering. The groove 7 is formed on the side wall of the circular tube, and the connecting block penetrates the groove 7 and connects the cylindrical block to the truss 8. This structure makes the connection between the embedded block 10 and the track 6 more stable, while the groove 7 provides a precise guiding path for the connecting block. When the cage body is raised and lowered, the connecting block moves along the slide groove 7, ensuring that the truss 8 can slide up and down accurately along the track 6, improving the guiding accuracy and avoiding collisions or jamming between the cage body and the track 6 due to guiding deviation.

[0045] Furthermore, such as Figure 1-2 As shown, the top of the net cage body is arranged in a circular array with multiple pull ropes 12 connected to it. The end of each pull rope 12 furthest from the net cage body passes through the top frame 1 and is connected to a windbreak plate 13. The pull ropes 12 are connected to the middle of the windbreak plate 13. When the pull ropes 12 are slack, the windbreak plate 13 lies down and floats on the sea surface. When the pull ropes 12 are taut and continuously pulled underwater (i.e., when the net cage body sinks), the windbreak plate 13 will gradually approach the top frame 1 and eventually flip over to maintain an upright position (as shown). Figure 2As shown in the diagram, several vertically erected windbreak panels 13 surround the top frame 1 and the top airbag 2. These panels form a barrier, effectively blocking some of the direct impact of wind and waves on the top frame 1 and airbag 2. This reduces the swaying effect of wind and waves on the top frame 1, allowing it to float more stably on the sea surface, thus ensuring the overall stability of the positioning mechanism and providing a more reliable base for the vertical lifting and lowering of the cage body. Furthermore, the vertical windbreak panels 13 can guide the direction of water flow to a certain extent, reducing the direct impact of the water flow on the cage body. In severe sea conditions, the water flow may be turbulent; the presence of the windbreak panels 13 allows the water flow to pass through the cage system more orderly, reducing the lateral thrust of the water flow on the cage body and further enhancing its stability. Simultaneously, proper water flow guidance also helps improve the water quality environment inside the cage, providing more suitable living conditions for farmed fish.

[0046] Furthermore, such as Figure 1-3 As shown, the top frame 1 has guide tubes 3 arranged radially in the same number as the pull ropes 12. The guide tubes 3 lead to the top frame 1 away from its axis, and each pull rope 12 passes through a corresponding guide tube 3. When the pull ropes 12 are taut and continuously pulled underwater (i.e., when the net cage body sinks), the windproof plate 13 will gradually approach the end of the guide tube 3, and flip at the end of the guide tube 3 and remain in an upright state (e.g., ...). Figure 2 As shown), the presence of the guide tube 3 increases the distance between the wind deflector 13 and the top airbag 2. On the one hand, it can expand the range of the wind deflector 13's enclosure, allowing the wind deflector 13 to better protect the top frame 1 and the top airbag 2 from wind and waves. On the other hand, it also provides sufficient space for the top airbag 2 to inflate, avoiding squeezing between components.

[0047] Furthermore, such as Figure 5-6As shown, the wind deflector 13 has a perforated section 1301, within which are multiple layers of spaced lifting fins 1302. When the wind deflector 13 is flipped to an upright position, each lifting fin 1302 remains horizontally positioned. The upper surface of the lifting fin 1302 is curved, and the lower surface is flat, with a wing-shaped cross-section. A slot is provided at the location where the wind deflector 13 connects to the pull rope 12. When the wind deflector 13 is flipped at the end of the guide tube 3 and remains upright, the guide tube 3 is inserted into the slot. When the wind deflector 13 is upright and receives lift, due to the design of the guide tube 3 inserted into the slot, each wind deflector 13 can effectively transfer the lift received to the top frame 1 and the top airbag 2 through each guide tube 3. This mechanism allows the top frame 1 and the top airbag 2 to receive additional upward lifting force, ensuring that they remain on the water surface under complex sea conditions and are not easily sunk by large waves. When facing surging waves, this additional lift force can offset some of the downward pressure exerted by large waves on the top frame 1 and top airbag 2, maintaining their stable floating state and providing a reliable base for the entire deep-sea cage system. Furthermore, this design allows the lift generated by the wind deflector 13 to share the buoyancy pressure of the top airbag 2, reducing its workload. This not only helps extend the service life of the top airbag 2 and reduce maintenance and replacement costs, but also ensures the performance stability of the top airbag 2 during long-term use, guaranteeing the normal functioning of the cage system's buoyancy adjustment capabilities.

[0048] Furthermore, such as Figure 5 As shown, a counterweight 1303 is provided on the side of the windproof panel 13 away from the perforated part 1301. This ensures that when the windproof panel 13 collapses and floats on the sea surface, it is in an inclined state. The inclined windproof panel 13 is flipped upright by the pull rope 12. Its initial inclination provides favorable initial conditions for flipping, making the flipping process more stable and reliable. Compared with the horizontally collapsed windproof panel 13, the inclined state reduces the possible jamming and shaking problems during the flipping process, ensuring that the windproof panel 13 can stand stably around the top frame 1 and the top airbag 2, forming a reliable barrier that effectively blocks the direct impact of wind and waves, improving the stability of the protective effect.

[0049] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A multi-layered, omnidirectional, lifting, wave-resistant deep-sea cage, comprising a cage body and a positioning mechanism for positioning and installing the cage body, characterized in that: The positioning mechanism includes a ring-shaped top frame (1) and a top airbag (2) on the top frame (1) for floating the top frame (1) on the water surface. The top frame (1) is connected to multiple anchor bodies (5) by multiple anchor ropes (4). Each anchor body (5) is anchored to the seabed. Multiple tracks (6) are vertically arranged at the bottom of the top frame (1). The tracks (6) are arranged in a ring array. The cage body is located between each of the tracks (6). The cage body can move up and down along the track (6) within the length range of the track (6). The cage body includes multiple layers of circular trusses (8). Each layer of the truss (8) is movably arranged on the track (6). Each layer of the truss (8) is provided with a lifting airbag (9). Netting (11) is provided between adjacent trusses (8) and on the inner side of each layer of the truss (8). The top of the cage body is arranged in a circular array with multiple pull ropes (12). The end of each pull rope (12) away from the cage body passes through the top frame (1) and is connected to a windproof plate (13). The pull rope (12) is connected to the middle of the windproof plate (13). The top frame (1) is provided with guide tubes (3) in the same number as the pull ropes (12) in the radial direction. The guide tubes (3) lead to the top frame (1) away from its axis. Each pull rope (12) passes through each guide tube (3) in a corresponding manner. The windproof plate (13) has a hollow part (1301) and a multi-layered lifting fin (1302) is provided inside the hollow part (1301). The upper surface of the lifting fin (1302) is curved and the lower surface is flat. Its cross-section is wing-shaped. A slot is provided at the position where the windproof plate (13) connects to the pull rope (12). The guide tube (3) is inserted into the slot.

2. The omnidirectional multi-tiered connected belt-lifted anti-rough sea deep sea net cage according to claim 1, characterized in that: The track (6) is provided with a groove (7) along its length direction, and each layer of the truss (8) is provided with an embedded block (10) that is adapted to and slidably engaged with the groove (7).

3. The omnidirectional multi-tiered connected belt-lifted anti-rough sea deep sea net cage according to claim 2, characterized in that: The track (6) is a circular tube structure, the groove (7) is formed on its side wall, and the embedded block (10) includes a cylindrical block that is adapted to the inner wall of the circular tube structure, and a connecting block that passes through the groove (7) and connects the cylindrical block and the truss (8).

4. The omnidirectional multi-tiered connected belt-lifted anti-rough sea deep sea net cage according to claim 1, characterized in that: The windproof plate (13) has a counterweight (1303) on the side away from the hollow part (1301).

Images