Liftable aquaculture net cage utilizing offshore wind power jacket and working method thereof

Abstract

The invention relates to the technical field of deep sea aquaculture devices, in particular to a liftable aquaculture net cage utilizing an offshore wind power jacket and a working method of the liftable aquaculture net cage. The lifting guide rail is arranged at the bottom of the offshore wind power jacket, and the two sides of the lifting guide rail are zigzag; the aquaculture net cage body is arranged on the lifting guide rail in a sleeving mode and located below the offshore wind power jacket; the aquaculture net cage body comprises a net cage cover plate and a net cage supporting device, and the net cage cover plate is connected to the lifting guide rail and selectively locked to the lifting guide rail; the net cage supporting device is hinged to the net cage cover plate; the driving devices are arranged at the top and the bottom of the aquaculture net cage body respectively and used for controlling the aquaculture net cage body; the driving device comprises a driving motor and a transmission gear; the driving motor is used for driving the transmission gear; and the transmission gear is meshed with sawteeth on the lifting guide rail. The device is lifted and folded through the driving device, the load is reduced, and fish collection and net drying are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of deep - sea aquaculture devices, and particularly to a lift - type aquaculture cage utilizing an offshore wind power jacket and its working method. Background Art

[0002] Offshore wind power is developing rapidly and gradually moving from shallow waters to deep - sea areas. However, with the increase in water depth, the cost of the support structure of the offshore wind power jacket also rises, bringing pressure to reduce costs and increase efficiency in offshore wind power development. To address this challenge, the integration of wind power and fisheries has become a new option.

[0003] The integration of wind power and fisheries is an innovative marine resource development model that combines wind power development and fishery aquaculture, achieving the comprehensive utilization of marine resources and maximizing benefits. The co - structure integration refers to arranging aquaculture cages in the space under the jacket, and through the dual - function integration of wind power generation and fishery aquaculture, realizing the efficient utilization of resources and the creation of additional value. By using the space under the jacket for fishery aquaculture, additional income can be created, thereby amortizing the development cost of offshore wind power.

[0004] However, the co - structure integration model still has the following problems: The arrangement of cages increases the wave and current loads borne by the jacket structure, which may affect the stability of the jacket; Since the cages are arranged under or around the jacket, the fish - harvesting operation may be restricted to a certain extent; Fouling organisms are easily attached to the netting during the aquaculture process, affecting the aquaculture effect and the service life of the netting. However, due to the cages being arranged under or around the jacket, the cleaning of the netting may become more difficult. At the same time, the existing aquaculture cage structure cannot fully lift and fold the cage, which will increase the load borne by the jacket when typhoons and surges arrive. Therefore, there is an urgent need to design an aquaculture cage to solve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a lift - type aquaculture cage utilizing an offshore wind power jacket and its working method for solving the technical problem that the aquaculture cage increases the wave and current loads borne by the jacket in view of the above - mentioned prior art.

[0006] The object of the present invention is achieved by the following technical solutions: In a first aspect, the present invention provides a lift - type aquaculture cage utilizing an offshore wind power jacket, comprising: Lifting guide rails, which are arranged at the bottom of the offshore wind power jacket, and the two sides of the lifting guide rails are serrated; The aquaculture cage body is sleeved on the lifting guide rail and located below the offshore wind power jacket; the aquaculture cage body includes a cage cover plate and a cage support device, the cage cover plate is connected to the lifting guide rail and is selectively locked to the lifting guide rail; the cage support device is hinged to the cage cover plate. Driving devices are respectively arranged at the top and bottom of the aquaculture cage body for controlling the aquaculture cage body; the driving devices include driving motors and transmission gears; the driving motors are used to drive the transmission gears; the transmission gears are meshed with the sawteeth on the lifting guide rail.

[0007] As a further improvement of the present invention, the cage cover plate includes an upper cover plate and a lower cover plate which are symmetrically arranged up and down; a plurality of connecting ear plates are correspondingly arranged on the upper cover plate and the lower cover plate, and a waterproof bearing is arranged on each connecting ear plate for hinging the cage support device through a rotating shaft.

[0008] As a further improvement of the present invention, the plurality of connecting ear plates are uniformly spaced along the circumferential direction of the upper cover plate and the lower cover plate.

[0009] As a further improvement of the present invention, the cage support device includes a plurality of support components, and each support component is a multi-link telescopic structure; the multi-link telescopic structure is four connecting rod members hinged end to end.

[0010] As a further improvement of the present invention, a rotating shaft is arranged at the connection end of the multi-link telescopic structure and the cage cover plate, and the rotating shaft is matched and installed with the waterproof bearing of the connecting ear plate through a pin shaft.

[0011] As a further improvement of the present invention, a net is foldably covered around the cage support device, and the net is made of a flexible material.

[0012] As a further improvement of the present invention, the transmission gear adopts a self-locking worm and worm structure.

[0013] As a further improvement of the present invention, the lifting guide rail is a vertically arranged long strip structure, and the sawteeth on both sides of the long strip structure are evenly distributed in the vertical direction.

[0014] As a further improvement of the present invention, the aquaculture cage further includes a control device for linking with weather forecasts, and the control device is used to control the driving device to make corresponding actions according to early warnings of different weather levels; When the weather level early warning is a first-level early warning, a reinforcement program is started to shrink the volume of the aquaculture cage body by 20% - 50%; When the weather level early warning is a second-level early warning, the aquaculture cage body is lowered to the middle water area and the position is locked; When the weather level early warning is a third-level early warning, the aquaculture cage body is completely folded and lifted to a safe position above the water surface.

[0015] In a second aspect, the present invention provides a working method for a liftable aquaculture cage utilizing an offshore wind power jacket, comprising: Installing the liftable aquaculture cage utilizing an offshore wind power jacket as described above on the offshore wind power jacket; When a typhoon is encountered, driving the transmission gear to engage with the serrations of the lifting guide rail through a driving motor, so that the aquaculture cage body slides downward along the lifting guide rail to the bottom of the jacket; When harvesting fish, driving the transmission gear to engage with the serrations of the guide rail through the driving motor, so that the aquaculture cage body is lifted upward along the guide rail above the water surface; In the folded state after harvesting fish, by controlling the differential movement of the top and bottom driving devices, a relative displacement is generated in the cage cover plate, driving the cage support device and the rotating shaft to rotate to realize the radial contraction of the cage.

[0016] The beneficial effects of the present invention are as follows: The present invention provides a liftable aquaculture cage utilizing an offshore wind power jacket. By controlling the lifting of the cage through a double driving device, the aquaculture water depth can be adjusted in real time, improving the biological survival rate. The aquaculture cage body moves up and down along the lifting guide rail through the driving device. This enables the cage to be conveniently lifted above the sea surface, facilitating the cleaning and maintenance of the netting. When the netting needs to be cleaned, the operator can lift the cage to the sea surface, and the operator can directly clean it on the sea surface without performing complex operations underwater. The double driving device can drive the aquaculture cage body into a folded state. When severe weather such as typhoons and swells arrives, the operator can lift the cage above the sea surface and fold it, reducing the impact and load on the cage in the water. Furthermore, the additional load borne by the jacket under severe weather conditions is effectively reduced, avoiding damage or deformation of the jacket under extreme weather conditions. At the same time, the safety and stability of the entire system are improved. The cage support device is hinged to the cage cover plate, enabling the cage to flexibly adjust its angle and position during lifting, further enhancing the adaptability and safety of the cage under severe weather conditions, reducing the load, and realizing fish harvesting and net drying.

[0017] Furthermore, the symmetrical arrangement of the upper cover plate and the lower cover plate makes the entire cage cover plate structure more balanced and stable. This symmetry helps to evenly distribute the load from the cage support device, avoiding structural deformation or damage caused by unilateral stress. The waterproof bearing can effectively prevent seawater from entering the bearing interior, avoiding seawater corrosion and bearing damage, and extending the service life of the bearing. The waterproof bearing can reduce the friction between the rotating shaft and the bearing, making the cage support device move more smoothly during lifting, reducing the operating force, and improving the operational convenience. Through the hinge connection of the rotating shaft, the cage support device can flexibly adjust its angle and position to adapt to different sea conditions and water flow conditions. The cage can better adapt to environmental changes during lifting, improving the adaptability and safety of the aquaculture cage.

[0018] Furthermore, each support component adopts a multi-link design, enabling the cage support device to flexibly adjust its length and angle as needed to adapt to different sea conditions and water flow conditions. The multi-link telescopic structure can occupy a smaller space when retracted, facilitating the lifting and storage of the cage, and can provide sufficient support force when deployed to ensure the stability of the cage. The multi-link structure can evenly distribute the weight of the cage and external loads to each link, avoiding structural damage caused by excessive single-point stress. This evenly distributed load design improves the load-bearing capacity of the cage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is a three-dimensional schematic diagram of the novel wind-fishing integrated jacket of the present invention; Figure 2 is the front view of the novel wind-fishing integrated jacket in the normal working state in the embodiment of the present invention; Figure 3 is the front view of the novel wind-fishing integrated jacket under typhoon conditions in the embodiment of the present invention; Figure 4 is the front view of the novel wind-fishing integrated jacket in the net drying state in the embodiment of the present invention; Figure 5 is the front view of the novel wind-fishing integrated jacket after the cage is folded in the embodiment of the present invention; Figure 6 is a schematic diagram of the top of the cage and the transmission mechanism in the embodiment of the present invention; Figure 7 is a schematic diagram of the structure of the cage in the normal working state in the embodiment of the present invention; Figure 8 is a schematic diagram of the structure of the cage in the folded state in the embodiment of the present invention; In the figure, 1, jacket; 2, aquaculture cage body; 21, upper cover plate driving device; 22, aquaculture cage bottom plate driving device; 3, lifting guide rail; 211, driving motor; 212, transmission gear; 231, cage cover plate; 232, support component; 233, link connecting ear plate; 234, netting. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives and technical solutions of the present invention clearer and easier to understand, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Among them, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] Embodiment 1 As Figures 1 to 8 shown, this embodiment provides a liftable aquaculture cage using an offshore wind power jacket. The aquaculture cage mainly includes: Lifting guide rails 3 are arranged at the bottom of the offshore wind power jacket 1, and both sides of the lifting guide rails 3 are serrated; the serrations on both sides of the lifting guide rails 3 in this embodiment are evenly distributed.

[0024] The aquaculture cage body 2 is sleeved on the lifting guide rails 3 and is located below the offshore wind power jacket 1. The aquaculture cage body 2 includes a cage cover plate 231 and a cage support device. The cage cover plate 231 is connected to the lifting guide rails 3 and is selectively locked to the lifting guide rails 3; the cage support device is hinged to the cage cover plate 231; Driving devices are respectively arranged at the top and bottom of the aquaculture cage body (i.e., the upper cover plate driving device 21 and the aquaculture cage bottom plate driving device 22). The cage cover plate 231 of the aquaculture cage body 2 is controlled by the driving devices. Both the upper cover plate driving device 21 and the aquaculture cage bottom plate driving device 22 include a driving motor 211 and a transmission gear 212; the driving motor 211 is used to drive the transmission gear 212; the transmission gear 212 meshes with the serrations on the lifting guide rails 3. As Figure 6 shown, the transmission gear 212 is installed on the transmission shaft of the lifting guide rails 3, and the transmission shaft is fixed in the driving device through bearings or other support structures, so that the transmission gear 212 can rotate smoothly. The upper cover plate driving device 21 and the aquaculture cage bottom plate driving device 22 drive the transmission gear 212 to rotate through the transmission shaft. The rotating transmission gear 212 generates a circumferential force by tightly meshing with the serrations of the lifting guide rails 3 and acts on the serrations of the lifting guide rails 3, thereby driving the aquaculture cage body to move up and down along the lifting guide rails 3.

[0025] The driving motor 211 serves as a power source to drive the transmission gear 212 to rotate. The rotating transmission gear 212 is tightly meshed with the serrations on the lifting rail 3 to generate a circumferential force, which acts on the serrations of the lifting rail 3, thereby driving the aquaculture cage body to move up and down along the lifting rail 3. The upper cover driving device 21 and the aquaculture cage bottom driving device 22 can be controlled independently, and the folding of the aquaculture cage body can be achieved by controlling the lifting and lowering of the upper cover and the cage bottom respectively. When the cage needs to collect fish or encounters bad weather, the cage body can be folded and raised to completely leave the water surface and be placed on top of the conduit frame 1 to prevent the conduit frame from being subjected to additional loads due to the cage, thereby improving the safety and reliability of the entire system.

[0026] By arranging the aquaculture cage body 2 in the lower space of the conduit frame 1, the aquaculture cage body 2 can move up and down along the lifting rail. The driving devices at the upper and lower covers of the aquaculture cage body 2 can be independently controlled, thereby realizing the independent movement of the upper cover and the bottom plate of the aquaculture cage, thereby realizing the folding of the aquaculture cage body. After the aquaculture cage body is folded and raised, it can not only collect fish, but also completely leave the water surface, and after being folded, it is placed on the top of the conduit frame 1 to avoid the conduit frame receiving additional load due to the cage.

[0027] Furthermore, the net box cover includes an upper cover and a net box bottom plate which are symmetrically arranged up and down. The upper cover and the net box bottom plate are correspondingly provided with a plurality of connecting ear plates, each of which is provided with a waterproof bearing for articulating the net box support device through a rotating shaft.

[0028] As a further preferred embodiment of this embodiment, a plurality of connecting ear plates are evenly spaced and distributed along the circumferential direction of the upper cover plate and the bottom plate of the cage.

[0029] In this embodiment, bidirectional guide wheels are arranged at symmetrical positions passing through the center of the circle on the cage cover, and the bidirectional guide wheels are mainly distributed on both sides of the lifting guide rail 3, and the gap between the two sides of the lifting guide rail 3 is controlled at 0.5~1mm. When the cage cover is tilted more than 5°, the eccentric adjustment structure (adjustable by ±2mm) is used to adapt to the installation error of the guide rail, and the shaft hydraulic cylinder drives the compensation connecting rod to adjust the angle of the support device to ensure the lateral centering of the cage cover during lifting and lowering, maintain a horizontal balance state, and avoid overloading of the lifting guide rail 3 and the transmission gear 212.

[0030] As a further preferred embodiment of the present invention, the cage support device includes a plurality of support components 232, each of which is a multi-link telescopic structure. Figure 8 Furthermore, the multi-link telescopic structure is composed of four connecting rods hinged end to end, and adjacent rods are connected by hinge axes to form a parallelogram motion mechanism.

[0031] The four connecting rod members hinged end to end in this embodiment have the same length, and connecting rod connection lugs 233 are provided at both ends respectively. The connecting rod connection lugs 233 are hinged through pin shafts.

[0032] As a further preferred embodiment, in order to further improve the stability and durability of the multi-link telescopic structure, a rotating shaft is provided at the connection end of the multi-link telescopic structure and the net cage cover plate. The rotating shaft is matched and installed with the waterproof bearing of the connection lug through a pin shaft. The diameter and length of the rotating shaft are optimized according to the size and weight of the net cage to ensure that it will not deform or break under the maximum load. The waterproof bearing adopts a sealed design, which can effectively prevent moisture and impurities from entering the bearing interior and ensure the normal operation of the bearing in a harsh environment.

[0033] In order to adapt to net cages of different heights and different load conditions, the multi-link telescopic structure of the support assembly 232 needs to have adjustment and locking functions: a length adjustment device is provided on each connecting rod member, which can be adjusted manually or electrically; the adjustment device adopts a threaded structure or a rack and pinion structure to ensure the accuracy and stability of the adjustment process.

[0034] In addition, a locking device is provided at the adjustment position of each connecting rod member in this embodiment to ensure that it can be firmly locked after being adjusted to the required length and prevent sliding during use. The locking device can adopt various forms such as a mechanical lock, a spring lock or a hydraulic lock, and is selected according to specific requirements.

[0035] In addition, high-strength alloy steel or aluminum alloy materials are selected for the connecting rod members and the rotating shaft. High-strength alloy steel has excellent strength and wear resistance and can bear the huge load of the net cage during the aquaculture process; aluminum alloy materials have good lightweight characteristics, which can reduce the overall weight of the net cage and the load of the driving device. Engineering plastics or stainless steel materials are used for the waterproof bearing and the connection lug. Engineering plastics have good corrosion resistance and self-lubricating performance, and stainless steel materials have high strength and excellent corrosion resistance, which can adapt to the high-salt and high-humidity conditions in the marine environment and improve the durability of the support device.

[0036] The periphery of the net cage support device is foldably covered with a netting 234, such as Figure 7As shown, the netting 234 is made of a flexible material. In this embodiment, the netting 234 is made of a material with self-cleaning function, such as a flexible material with a nanoscale superhydrophobic and superoleophobic coating on its surface. This coating makes it difficult for pollutants such as algae and microorganisms attached to the surface of the netting to adhere, and it is easier to fall off under the scouring of seawater, reducing the frequency and workload of manually cleaning the netting 234. In addition, in this embodiment, a sensor array is embedded in the support assembly 232 or the top plate / bottom plate, including water quality sensors (monitoring parameters such as dissolved oxygen, pH value, temperature, etc.) and biological sensors (monitoring the growth status and health status of cultured fish, etc.). The data collected by these sensors is transmitted to the onshore monitoring center in real time, facilitating the aquaculture personnel to timely understand the aquaculture environment and fish growth conditions in the cage, and realizing intelligent aquaculture management.

[0037] In addition, the transmission gear adopts a self-locking worm and worm gear structure to ensure that the cage can maintain its current position in case of power failure or failure, preventing accidental lifting and lowering.

[0038] The lifting guide rail 3 is a vertically arranged long strip structure, and the sawteeth on both sides of the long strip structure are evenly distributed in the vertical direction. The lifting guide rail 3 is made of high-strength stainless steel or aluminum alloy material, with good corrosion resistance and mechanical strength. The surface of the guide rail is hardened and coated with an anti-corrosion coating to improve its wear resistance and service life.

[0039] Furthermore, the liftable aquaculture cage system in this embodiment further includes a control device for linkage with weather forecasts. The control end of the control device is arranged in a control room adjacent to the installation of the liftable aquaculture cage, or installed on the aquaculture platform. The control device is connected to the drive device through waterproof and corrosion-resistant wire and cable, and thus realizes the control of the drive device. A corresponding control program is written in the control device, which is used to control the drive device to make corresponding actions according to different weather level warnings: When the weather level warning is a first-level warning (for example, wind speed 15m / s), the reinforcement program is started to shrink the volume of the aquaculture cage body by 20% - 50%; When the weather level warning is a second-level warning (for example, 20m / s), the aquaculture cage body is lowered to the middle water area and locked in position; When the weather level warning is a third-level warning (for example, 25m / s), the aquaculture cage body is completely folded and lifted to a safe position above the water surface. The safe position in this embodiment refers to a position that can avoid various dangers and damages brought by the third-level warning weather (such as wind speed reaching 25m / s).

[0040] Alternatively, when the weather forecast indicates an approaching heavy rainstorm (i.e., a level-three warning), the control device can calculate the appropriate depth to raise or lower the net cage according to a preset algorithm, and drive the driving motor to rotate a corresponding number of turns or angles, so that the transmission gear drives the net cage to rise or fall along the lifting guide rail to the specified position. When the weather conditions improve, the control device can control the aquaculture net cage according to the opposite logic.

[0041] The working principle of the aquaculture net cage in this embodiment specifically includes: When the aquaculture net cage body 2 is in a normal working state, the net cage cover plate is flush with the sea level, as Figure 2 shown.

[0042] When a typhoon approaches, to avoid excessive loads on the net cage, the driving motors 211 in the upper cover plate driving device 21 and the aquaculture net cage bottom plate driving device 22 slide downward simultaneously, and the aquaculture net cage body 2 slides downward along the lifting guide rail to the bottom of the jacket 1, as Figure 3 shown.

[0043] When harvesting fish, the driving motors 211 in the upper cover plate driving device 21 and the aquaculture net cage bottom plate driving device 22 slide upward simultaneously, and the aquaculture net cage body 2 is lifted above the water surface along the lifting guide rail, as Figure 4 and Figure 5 shown. This is convenient for fish harvesting and also for drying and cleaning the netting.

[0044] After harvesting fish, by using the relative movement of the driving motors 211 in the upper cover plate driving device 21 and the aquaculture net cage bottom plate driving device 22, the relative movement between the upper cover plate and the aquaculture net cage bottom plate is controlled, and the support assembly 232 is compressed, and the entire aquaculture net cage body 2 is folded, thereby reducing the wind and wave loads on the aquaculture net cage body 2, and thus reducing the force transmitted from the net cage to the jacket 1.

[0045] Embodiment 2 As a further preferred embodiment of Embodiment 1, in this embodiment, a wear-resistant coating, such as a ceramic coating or a polymer wear-resistant coating, is added to the serrated surface of the lifting guide rail 3 to improve the wear resistance and service life of the guide rail, and reduce the influence of serration wear caused by long-term use on the transmission accuracy.

[0046] A lubrication channel is also provided inside the lifting guide rail 3, and lubricant is regularly injected onto the serrated surface through an automatic lubrication system to reduce the friction coefficient between the transmission gear 212 and the serrations, further reducing wear and also reducing the operating noise.

[0047] Embodiment 3 As a preferred embodiment of Embodiment 1, a self-lubricating ceramic bearing is used at the connecting ear plate and the rotating shaft in this embodiment, and the friction coefficient is reduced to 0.002 - 0.005, reducing the maintenance frequency (the maintenance period is extended to 2 - 3 years) to adapt to the high humidity and high salinity environment of the ocean.

[0048] Embodiment 4 The working principle of the aquaculture cage in this embodiment specifically includes: When the aquaculture cage body 2 is in a normal working state, the cage cover is flush with the sea level, as Figure 2 shown.

[0049] When a typhoon comes, to avoid the cage from bearing excessive loads, the driving motors 211 in the upper cover driving device 21 and the aquaculture cage bottom plate driving device 22 slide downward simultaneously, and the aquaculture cage body 2 slides downward along the lifting guide rail to the bottom of the jacket 1, as Figure 3 shown.

[0050] When harvesting fish, the driving motors 211 in the upper cover driving device 21 and the aquaculture cage bottom plate driving device 22 slide upward simultaneously, and the aquaculture cage body 2 is lifted upward along the lifting guide rail above the water surface, as Figure 4 and Figure 5 shown. This is convenient for harvesting fish and also for drying and cleaning the netting.

[0051] After harvesting fish, by using the relative movement of the driving motors 211 in the upper cover driving device 21 and the aquaculture cage bottom plate driving device 22, the relative movement between the upper cover and the aquaculture cage bottom plate is made, and the support assembly 232 is controlled to be compressed, and the entire aquaculture cage body 2 is folded, thereby reducing the wind and wave loads on the aquaculture cage body 2, and thus reducing the force transmitted from the cage to the jacket 1.

[0052] In addition, this embodiment also uses a control device linked with weather forecasts. The control device is used to control the driving device to make corresponding actions according to early warnings of different weather levels; When the weather level early warning is a first-level early warning, the reinforcement program is started, and the volume of the aquaculture cage body is reduced by 20% - 50%; When the weather level early warning is a second-level early warning, the aquaculture cage body is lowered to the middle water area and the position is locked; When the weather level early warning is a third-level early warning, the aquaculture cage body is completely folded and lifted to a safe position above the water surface.

Claims

1. A liftable aquaculture cage utilizing an offshore wind power jacket, characterized in that, Comprising: Lifting guide rails, which are arranged at the bottom of the offshore wind power jacket, and the two sides of the lifting guide rails are serrated; Aquaculture cage body, which is sleeved on the lifting guide rails and is located below the offshore wind power jacket; the aquaculture cage body includes a cage cover plate and a cage support device, the cage cover plate is connected to the lifting guide rails and is selectively locked to the lifting guide rails; The cage support device is hinged to the cage cover plate; Drive devices, which are respectively arranged at the top and bottom of the aquaculture cage body for controlling the aquaculture cage body; the drive devices include drive motors and transmission gears; the drive motors are used to drive the transmission gears; the transmission gears are meshed with the serrations on the lifting guide rails.

2. The liftable aquaculture cage using an offshore wind power jacket according to claim 1, wherein The cage cover plate includes an upper cover plate and a cage bottom plate which are symmetrically arranged up and down; a plurality of connecting ear plates are correspondingly arranged on the upper cover plate and the cage bottom plate, and a waterproof bearing is arranged on each connecting ear plate for hinging the cage support device through a rotating shaft.

3. The liftable aquaculture cage using an offshore wind power jacket according to claim 2, wherein, A plurality of connecting ear plates are evenly spaced along the circumferential direction of the upper cover plate and the cage bottom plate.

4. The liftable aquaculture cage using an offshore wind power jacket according to claim 2, characterized in that The cage support device includes a plurality of support components, and each support component is a multi-link telescopic structure; the multi-link telescopic structure is four connecting rod members hinged end to end.

5. The liftable aquaculture cage using an offshore wind power jacket according to claim 4, characterized in that A rotating shaft is arranged at the connection end of the multi-link telescopic structure and the cage cover plate, and the rotating shaft is matched and installed with the waterproof bearing of the connecting ear plate through a pin shaft.

6. The liftable aquaculture cage using an offshore wind power jacket according to claim 1, wherein, A netting is foldably covered around the cage support device, and the netting is made of a flexible material.

7. The liftable aquaculture cage using an offshore wind power jacket according to claim 1, characterized in that, The transmission gear adopts a self-locking worm and worm structure.

8. The liftable aquaculture cage using an offshore wind power jacket according to claim 1, wherein The lifting guide rails are vertically arranged strip-shaped structures, and the serrations on both sides of the strip-shaped structures are evenly distributed in the vertical direction.

9. The liftable aquaculture cage using an offshore wind power jacket according to claim 1, wherein, The aquaculture cage further includes a control device for linkage with weather forecasts, and the control device is used to control the drive devices to make corresponding actions according to early warnings of different weather levels; When the weather level early warning is a first-level early warning, a reinforcement program is started to shrink the volume of the aquaculture cage body by 20% - 50%; When the weather level early warning is a second-level early warning, the aquaculture cage body is lowered to the middle water area and the position is locked; When the weather level early warning is a third-level early warning, the aquaculture cage body is completely folded and lifted to a safe position above the water surface.

10. A working method of a liftable aquaculture cage using an offshore wind power jacket, characterized in that, Comprising: Installing the liftable aquaculture cage using the offshore wind power jacket as described in claims 1 to 9 on the offshore wind power jacket; When encountering a typhoon, driving the transmission gear to engage with the serrations of the lifting guide rails through the drive motor, so that the aquaculture cage body slides down along the lifting guide rails to the bottom of the jacket; When harvesting fish, driving the transmission gear to engage with the serrations of the guide rails through the drive motor, so that the aquaculture cage body is lifted above the water surface along the guide rails; In the folded state after harvesting fish, by controlling the differential movement of the top and bottom drive devices, a relative displacement is generated on the cage cover plate, driving the cage support device and the rotating shaft to rotate to realize the radial contraction of the cage.

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