A wind and wave protection lifting net cage, system and lifting method

Abstract

The application discloses a lifting type net cage for preventing wind and wave, a system and a lifting method, relates to the technical field of breeding net cages, and comprises a net cage main body, a hydraulic system and a fixing system. The fixing system comprises a rope and a fixing piece, the rope is connected with the fixing piece, the density of the fixing piece is greater than that of seawater, and the fixing piece is used for being fixed to the seabed. The hydraulic system comprises a hydraulic cylinder and an oil tank, the hydraulic cylinder is connected with the oil tank, a piston and a piston rod are arranged in the hydraulic cylinder, an opening is arranged at the bottom of the hydraulic cylinder, one end of the piston rod is connected with the rope through the opening, and the other end of the piston rod is connected with the piston. The hydraulic cylinder is connected with the net cage main body. The application provides a lifting type net cage for preventing wind and wave, a system and a lifting method, and is used for solving the technical problems that the existing deep water wind and wave resistant breeding net cage adopts a mechanical system or a buoyancy adjusting net cage, and the sinking and floating performance is poor and the operation is complicated.

Description

Technical Field

[0001] This invention relates to the field of aquaculture cage technology, and in particular to a lifting cage, system and lifting method for protection against wind and waves. Background Technology

[0002] In recent years, nearshore aquaculture in my country has reached saturation, making the promotion of deep-sea cage aquaculture imperative. However, due to the complex environment of the open sea, with its large waves and frequent typhoons, especially in the South China Sea, cage aquaculture safety is greatly affected. Therefore, the ability to withstand wind and waves directly impacts the lifespan and effectiveness of the cages, and also affects the growth of fish.

[0003] Existing deep-water, wave-resistant aquaculture cages use mechanical systems such as gears, pulleys, and winches, or water injection and air inflation valves on the cage frame, along with an internal water pump, to inject water and air into the frame, adjusting the cage's own weight to achieve sinking and floating. However, these systems have poor buoyancy and are cumbersome to operate. Summary of the Invention

[0004] This invention provides a lifting net cage, system, and lifting method for wind and wave protection, which solves the technical problems of existing deep-water wind and wave resistant aquaculture net cages that use mechanical systems or buoyancy to adjust the position of the net cage, resulting in poor sinking and floating performance and cumbersome operation.

[0005] The present invention provides a lifting cage for wind and wave protection, comprising: a cage body, a hydraulic system, and a fixing system;

[0006] The fixing system includes a rope and a fixing element, wherein the rope is connected to the fixing element;

[0007] The density of the fastener is greater than that of seawater, and the fastener is used to fix it to the seabed;

[0008] The hydraulic system includes a hydraulic cylinder and an oil tank, with the hydraulic cylinder connected to the oil tank.

[0009] The hydraulic cylinder is equipped with a piston and a piston rod. The bottom of the hydraulic cylinder has an opening. One end of the piston rod passes through the opening and is connected to the rope. The other end of the piston rod is connected to the piston.

[0010] The hydraulic cylinder is connected to the main body of the cage.

[0011] Preferably, the fixing system further includes: an upper pulley, a lower pulley, and an automatic reel take-up device;

[0012] The rope passes over the upper pulley and the lower pulley, the upper pulley is connected to the piston rod, and the lower pulley is connected to the fixing member;

[0013] The rope is connected to the automatic take-up device.

[0014] Preferably, multiple anchor chains are symmetrically arranged on the main body of the cage, with one end of the anchor chain connected to the main body of the cage and the other end connected to the seabed.

[0015] Preferably, the hydraulic cylinder is connected to the center of the main body of the cage.

[0016] Preferably, the main body of the cage includes a cage frame, a mesh cover, and a cage lid;

[0017] The netting covers the cage frame, and the cage cover is installed on top of the cage frame.

[0018] Preferably, the cage frame is made of steel.

[0019] Preferably, the fastener is a concrete anchor.

[0020] The present invention provides a lifting system for wind and waves protection, comprising: a control system and the above-mentioned lifting cage for wind and waves protection;

[0021] The main body of the cage is equipped with a depth monitoring device, which is connected to the control system.

[0022] The control system is connected to the hydraulic system and is used to control the oil flow into and out of the hydraulic cylinder.

[0023] The present invention provides a lifting method for a lifting system for wind and wave protection, comprising:

[0024] S1. The control system sets the target depth, the depth monitoring device detects the current depth, and the depth monitoring device sends the current depth to the control system.

[0025] S2. The control system determines whether the main body of the cage needs to rise or sink based on the target depth and the current depth.

[0026] If the target depth is less than the current depth, the main body of the cage needs to be raised. The difference between the target depth and the current depth is the target raising distance.

[0027] If the target depth is greater than the current depth, the main body of the cage needs to be lowered. The difference between the target depth and the current depth is the target lowering distance.

[0028] S3. When the main body of the cage needs to rise, the control system controls the amount of oil entering the first inlet and outlet of the hydraulic cylinder and the amount of oil exiting the second inlet and outlet of the hydraulic cylinder into the oil tank according to the target rising distance, so that the main body of the cage rises to the target depth.

[0029] When the main body of the cage needs to be lowered, the control system controls the amount of oil discharged from the first inlet and outlet of the hydraulic cylinder to the oil tank and the amount of oil fed from the oil tank to the second inlet and outlet of the hydraulic cylinder according to the target lowering distance, so that the main body of the cage can be lowered to the target depth.

[0030] Preferably, S3 specifically comprises:

[0031] When the main body of the cage needs to rise, the control system controls the amount and speed of oil entering the first inlet and outlet of the hydraulic cylinder and the amount and speed of oil exiting the second inlet and outlet of the hydraulic cylinder into the oil tank according to the target rising distance, so that the main body of the cage rises to the target depth.

[0032] When the main body of the cage needs to be lowered, the control system controls the amount and speed of oil discharged from the first inlet and outlet of the hydraulic cylinder to the oil tank, and the amount and speed of oil entering from the oil tank to the second inlet and outlet of the hydraulic cylinder, according to the target lowering distance, so that the main body of the cage can be lowered to the target depth.

[0033] This invention provides a liftable gabion for wind and wave protection, which has the following advantages:

[0034] The system includes: a net cage body, a hydraulic system, and a fixing system; the fixing system includes ropes and fasteners, with the ropes connected to the fasteners; the fasteners have a density greater than seawater and are used to fix the net cage to the seabed; the hydraulic system includes a hydraulic cylinder and an oil tank, with the hydraulic cylinder connected to the oil tank; the hydraulic cylinder has a piston and a piston rod inside, and an opening at the bottom of the hydraulic cylinder; one end of the piston rod passes through the opening and connects to the rope, and the other end of the piston rod connects to the piston; the hydraulic cylinder is connected to the net cage body.

[0035] In this invention, the fixing system is deployed into the sea. Since the density of the fixing component is greater than that of seawater, it can sink and be fixed to the seabed. The hydraulic cylinder is connected to the main body of the net cage. The piston rod inside the hydraulic cylinder passes through the bottom opening of the hydraulic cylinder and is connected to the rope at one end, while the other end is connected to the piston. When the net cage is ready to sink, the piston is located in the hydraulic cylinder near the bottom, and part of the main body of the net cage floats on the water surface. At this time, the rope of the fixing system is in a taut state.

[0036] Oil is fed from the oil tank to the corresponding inlet and outlet of the hydraulic cylinder, and oil is discharged from the corresponding inlet and outlet of the hydraulic cylinder to the oil tank, causing the piston to move upward. However, because the end of the piston rod that passes through the opening is connected to a fixing system, and the fixing components of the fixing system are fixed to the seabed, the piston and piston rod are held back by the fixing system and cannot move upward. Meanwhile, the hydraulic cylinder continues to feed and discharge oil, thereby driving the hydraulic cylinder to descend. The main body of the net cage connected to the hydraulic cylinder also sinks synchronously. This allows the net cage to quickly respond to sudden changes in ocean conditions before typhoons or other emergencies, enabling it to avoid the harsh surface marine environment and prevent significant economic losses.

[0037] The cage rises: oil is fed into the hydraulic cylinder through the oil tank and oil is discharged from the hydraulic cylinder through the corresponding inlet and outlet, causing the piston to move downward. The piston moves downward along the inner wall of the hydraulic cylinder, the rope of the fixing system becomes loose, and the cage body is buoyed upward. The upward movement of the cage body will pull the rope. When the rope is pulled to the point that it is taut, the cage body is restricted from rising.

[0038] This invention controls the lifting and lowering of the net cage body by controlling the inlet and outlet of the hydraulic cylinder, and controls the lifting and lowering distance by controlling the amount of oil entering and exiting. The lifting and lowering of the net cage body and its position in the water can be adjusted as needed. Compared with existing deep-water wind and wave resistant aquaculture net cages that use mechanical systems or buoyancy to adjust the position of the net cage, this invention has higher precision in lifting and lowering the net cage body, consumes less time, improves efficiency, reduces manual labor, and is easier to operate. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a front view of the lifting cage for wind and wave protection described in an embodiment of the present invention;

[0041] Figure 2 This is a top view of the lifting cage for wind and wave protection according to an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of the hydraulic system and fixing system of the lifting cage for wind and waves described in an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the sinking of the main body of the lifting cage for wind and waves as described in an embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram showing the main body of the lifting cage for wind and wave protection as described in an embodiment of the present invention, in preparation for sinking.

[0045] In the diagram: 1. Main body of the cage; 11. Cage frame; 2. Hydraulic system; 3. Hydraulic cylinder; 31. First inlet / outlet; 32. Second inlet / outlet; 33. Opening; 4. Piston; 5. Piston rod; 6. Fixing system; 61. Rope; 62. Upper pulley; 63. Lower pulley; 64. Fixing component; 7. Anchor chain; 71. Tensioning component. Detailed Implementation

[0046] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0047] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 the embodiments of the present 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 the embodiments of the present invention.

[0048] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features.

[0049] In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0051] This invention provides a lifting net cage, system, and lifting method for wind and wave protection, which solves the technical problems of existing deep-water wind and wave resistant aquaculture net cages that use mechanical systems or buoyancy to adjust the position of the net cage, resulting in poor sinking and floating performance and cumbersome operation.

[0052] Please see Figure 1-4 An embodiment of the present invention provides a lifting cage for wind and waves protection, comprising: a cage body 1, a hydraulic system 2, and a fixing system 6;

[0053] The fixing system 6 includes a rope 61 and a fixing member 64, with the rope 61 connected to the fixing member 64;

[0054] The density of fastener 64 is greater than that of seawater, and fastener 64 is used to fix it to the seabed;

[0055] The hydraulic system 2 includes a hydraulic cylinder 3 and an oil tank (not shown in the figure), with the hydraulic cylinder 3 connected to the oil tank;

[0056] The hydraulic cylinder 3 is equipped with a piston 4 and a piston rod 5. The bottom of the hydraulic cylinder 3 is provided with an opening 33. One end of the piston rod 5 passes through the opening and is connected to a rope 61. The other end of the piston rod 5 is connected to the piston 4.

[0057] Hydraulic cylinder 3 connects to the main body 1 of the mesh cage.

[0058] It should be noted that in this invention, the fixing system 6 is deployed into the sea. Since the density of the fixing component 64 is greater than that of seawater, it can sink and be fixed to the seabed. The hydraulic cylinder 3 is connected to the main body 1 of the net cage. The piston rod 5 inside the hydraulic cylinder 3 passes through the bottom opening 33 of the hydraulic cylinder 3 and is connected to the rope 61 at one end, while the other end is connected to the piston 4. When the net cage is about to sink, the piston 4 is located in the hydraulic cylinder 3 near the bottom, and part of the main body 1 of the net cage floats on the water surface. At this time, the rope 61 of the fixing system 6 is in a taut state.

[0059] Oil is fed into the inlet and outlet of the hydraulic cylinder 3 from the oil tank, and oil is discharged from the inlet and outlet of the hydraulic cylinder 3 to the oil tank, causing the piston 4 to move upward. However, since the piston rod 5 is connected to the fixing system 6 at one end through the opening 33, and the fixing part 64 of the fixing system 6 is fixed to the seabed, the piston 4 and piston rod 5 are pulled by the fixing system 6 and cannot move upward. Meanwhile, the hydraulic cylinder 3 continues to feed and discharge oil, thereby driving the hydraulic cylinder 3 to descend. The main body of the net cage connected to the hydraulic cylinder 3 also sinks synchronously. Before the arrival of emergencies such as typhoons, it can quickly respond to sudden changes in ocean conditions, allowing the net cage to avoid the harsh surface marine environment and avoid causing significant economic losses.

[0060] The cage rises: oil is fed into the inlet and outlet of the hydraulic cylinder 3 through the oil tank, and oil is discharged from the inlet and outlet of the hydraulic cylinder 3 to the oil tank, causing the piston 4 to move downward. The piston 4 will move downward along the inner wall of the hydraulic cylinder 3, the rope of the fixing system 6 becomes loose, and the cage body 1 is floated up by buoyancy. The rise of the cage body 1 will pull the rope 61. When the rope 61 is pulled to the point that the rope 61 is in a taut state, the cage body 1 is restricted from rising.

[0061] This invention controls the lifting and lowering of the net cage body 1 by controlling the inlet and outlet of the hydraulic cylinder 3. The lifting and lowering distance is controlled by controlling the amount of oil entering and exiting. The lifting and lowering of the net cage body 1 and its position in the water can be adjusted as needed. Compared with existing deep-water wind and wave resistant aquaculture net cages that use mechanical systems or buoyancy to adjust the position of the net cage, this invention has higher precision in lifting and lowering the net cage body 1, consumes less time, improves efficiency, reduces manual labor, and is easier to operate.

[0062] The rope is a steel wire rope, and those skilled in the art can choose the rope material according to the actual situation.

[0063] Please see Figure 4 In another more specific embodiment, the hydraulic cylinder 3 has a first inlet / outlet 31 on the side wall near the top and a second inlet / outlet 32 ​​on the side wall near the bottom. The first inlet / outlet and the second inlet / outlet are connected to the oil tank.

[0064] The anchoring system 6 is deployed into the sea and secured to the seabed. The hydraulic cylinder 3 is connected to the main body 1 of the net cage. One end of the piston rod 5 inside the hydraulic cylinder 3, passing through the bottom opening of the cylinder 3, is connected to the anchoring system 6, while the other end is connected to the piston 4. When the net cage is ready to sink, the piston 4 is positioned near the bottom inside the hydraulic cylinder 3, and a portion of the main body 1 of the net cage floats on the water surface. At this time, the rope 61 of the anchoring system 6 is taut (e.g., ...). Figure 4 (the left half);

[0065] When the first inlet / outlet 31 of the hydraulic cylinder 3 discharges oil into the oil tank, and the oil tank supplies oil into the second inlet / outlet 32 ​​of the hydraulic cylinder 3, the piston 4 and piston rod 5 are held in place by the fixing system 6, which is fixed to the seabed, because the piston rod 5 is connected to the end of the opening 33. Meanwhile, the first inlet / outlet 31 of the hydraulic cylinder 3 continuously discharges oil, and the second inlet / outlet 32 ​​continuously supplies oil, thus causing the hydraulic cylinder 3 to descend. The main body 1 of the net cage connected to the top of the hydraulic cylinder 3 also sinks synchronously. This allows for a rapid response to sudden changes in ocean conditions before typhoons or other emergencies, enabling the net cage to avoid the harsh surface marine environment and prevent significant economic losses (such as...). Figure 4 (the right half);

[0066] Net cage rises: When oil is fed into the first inlet / outlet 31 of the hydraulic cylinder 3 and oil is discharged into the oil tank from the second inlet / outlet 32 ​​of the hydraulic cylinder 3, the piston 4 will move downward along the inner wall of the hydraulic cylinder 3, the rope 61 of the fixing system 6 will become loose, and the net cage body 1 will be buoyed and rise. The rise of the net cage body 1 will pull the rope 61. When the rope 61 is pulled to the point that the rope 61 is in a taut state, the net cage body 1 will be restricted from rising.

[0067] Please see Figure 1 , 3 5. In a more specific embodiment, the fixing system 6 further includes: an upper pulley 62, a lower pulley 63, and an automatic reel (not shown in the figure);

[0068] Rope 61 passes over upper pulley 62 and lower pulley 63. Upper pulley 62 is connected to piston rod 5, and lower pulley 63 is connected to fixing member 64.

[0069] Rope 61 is connected to an automatic reel-in.

[0070] It should be noted that ballast is set on the main body 1 of the net cage to make the main body 1 of the net cage descend. The weight of the ballast should not be enough to make the main body 1 of the net cage sink completely. The net cage overcomes part of the positive buoyancy and still has part of it on the sea surface. However, the descent of the main body 1 of the net cage will make the rope 61 slack. In order to keep the rope 61 taut, the rope 61 is connected to an automatic line reel, which can be used to reel in the line and tighten it.

[0071] To prevent the piston rod 5 from being submerged in the sea for an extended period, initially, the piston 4 is positioned near the top of the hydraulic cylinder 3, and the piston rod 5 is also retracted into the hydraulic cylinder 3 (e.g., Figure 5 (the left half);

[0072] Only when the main body 1 of the net cage is ready to be lowered, oil is fed into the first inlet and outlet of the hydraulic cylinder 3 from the oil tank, and oil is discharged into the oil tank from the second inlet and outlet of the hydraulic cylinder 3. At the same time, the automatic reel in the rope and pulls the piston 4 down along the inner wall of the hydraulic cylinder 3. At this time, the position of the hydraulic cylinder 3 remains unchanged. The piston 4 is adjusted to a position close to the bottom of the hydraulic cylinder 3, and the piston rod 5 also extends out of the hydraulic cylinder 3. The rope 61 is also in a taut state, and the net cage is ready to be lowered (e.g., ...). Figure 5 (the right half);

[0073] Then, the automatic retractor is controlled to stop retracting the rope, allowing the first inlet and outlet of the hydraulic cylinder 3 to discharge oil into the oil tank, while the oil tank supplies oil into the second inlet and outlet of the hydraulic cylinder. The piston 4 and piston rod 5 are held in place by the fixing system 6 and cannot move upward. The continuous inlet and outlet of oil then drives the hydraulic cylinder 3 to descend, causing the main body of the net cage 1 to sink and avoid the wind and waves.

[0074] In addition, since the length of the hydraulic cylinder 3 and piston rod 5 is limited, an automatic retractor and rope 61 are provided. The automatic retractor can retract and extend the rope to adjust the length of the rope 61, thereby driving the cage body 1 to rise and fall, and expanding the lifting range of the cage body 1.

[0075] In complex or changing underwater environments (such as currents, waves, etc.), the automatic reel can dynamically adjust the length and tension of the rope 61 to cope with these changes and ensure the stability of the cage.

[0076] In emergency situations, such as a failure of hydraulic system 2, the automatic reel can quickly release the rope, and the main body of the net cage 1 can float to the water surface for retrieval.

[0077] Please see Figure 1 In a more specific embodiment, multiple anchor chains 7 are symmetrically arranged on the main body 1 of the net cage, with one end of the anchor chain 7 connected to the main body 1 of the net cage and the other end of the anchor chain 7 connected to the seabed.

[0078] It should be noted that multiple anchor chains 7 are symmetrically set on the main body 1 of the net cage. One end of the anchor chain 7 is connected to the main body 1 of the net cage, and the other end of the anchor chain 7 is connected to the seabed. This can stabilize the two sides of the net cage and provide a certain amount of horizontal movement space for the main body 1 of the net cage, which can offset some of the dynamic pressure caused by water flow and waves.

[0079] The number of anchor chains 7 is adjusted according to the actual situation.

[0080] Please see Figure 1 In a more specific embodiment, the anchor chain 7 is provided with a tensioning element 71.

[0081] It should be noted that the tensioning element 71 is installed on the anchor chain 7 so that the anchor chain 7 is in a tensioned state when the main body 1 of the gabion sinks.

[0082] Tensioner 71 includes a chain and a ball block, one end of the chain is connected to the anchor chain, and the other end of the chain is connected to the ball block.

[0083] Please see Figure 2 In a more specific embodiment, the hydraulic cylinder 3 is connected to the center of the cage body 1.

[0084] It should be noted that the hydraulic cylinder 3 is connected to the center of the net cage body 1, so that when the hydraulic cylinder 3 descends, it can more stably drive the connected net cage body 1 to descend vertically, reducing the degree of tilting and swaying.

[0085] Please see Figure 2 In a more specific embodiment, the cage body 1 includes a cage frame 11, a mesh cover (not shown in the figure), and a cage cover (not shown in the figure);

[0086] The wire mesh covers the wire mesh frame 11, and the wire mesh cover is installed on the top of the wire mesh frame 11.

[0087] It should be noted that the cage frame 11 includes: an upper frame, a lower frame and a side frame; the hydraulic cylinder 3 is located inside the cage frame, the top of the hydraulic cylinder 3 is connected to the center of the upper frame of the cage frame 11, and the bottom of the hydraulic cylinder 3 is connected to the center of the lower frame of the cage frame 11.

[0088] The netting covers the cage frame 11, wrapping and protecting aquatic organisms while providing sufficient water flow to ensure their living environment.

[0089] A cage cover is installed on the top of the cage frame 11 to allow fish to enter the cage;

[0090] The cage cover is designed to open and close, which can prevent fish from escaping or foreign objects from entering.

[0091] In a more specific embodiment, the cage frame is made of steel.

[0092] It should be noted that the steel cage frame has good strength and stability, ensuring that the structure remains intact and stable under various weather conditions, and has good corrosion resistance, making it suitable for long-term placement in seawater.

[0093] In a more specific embodiment, the fastener 64 is a concrete anchor.

[0094] It should be noted that the density of fastener 64 is greater than that of seawater. Its function is to provide a static and stable foundation to ensure that the cage can maintain its positional stability under water flow or other underwater dynamic conditions.

[0095] Concrete anchors have good corrosion resistance, strong load-bearing capacity and resistance to wind and waves, and are not easily displaced on the seabed.

[0096] An embodiment of the present invention provides a lifting system for wind and waves protection, comprising: a control system and the above-described lifting cage for wind and waves protection;

[0097] The main body of the cage is equipped with a depth monitoring device, which is connected to the control system;

[0098] The control system is connected to the hydraulic system and is used to control the oil flow into and out of the hydraulic cylinder.

[0099] It should be noted that the control system is a closed-loop controller, such as a PLC, industrial PC, or dedicated motion controller.

[0100] The hydraulic system also includes servo valves / proportional valves. The control system controls the servo valves / proportional valves to regulate the flow and / or pressure of oil entering and exiting the hydraulic cylinder. The servo valves / proportional valves continuously adjust the flow and / or pressure according to the input signal, allowing for fine control of speed and position.

[0101] Depending on the requirements, the hydraulic system may also include hydraulic pumps, hydraulic hoses, pipes, fittings, and safety and monitoring equipment. Since these are standard equipment, they will not be described in detail here.

[0102] The depth monitoring device is a depth gauge, depth sensor, pressure sensor or linear displacement sensor, which can feed back the current depth to the control system in real time;

[0103] The control system is also connected to an automatic retractor, which can control the retractor to take up and release the line according to the target depth.

[0104] An embodiment of the present invention provides a lifting method for a wave-resistant lifting system, based on the above-described wave-resistant lifting system, comprising:

[0105] S1. The control system sets the target depth, the depth monitoring device detects the current depth, and the depth monitoring device sends the current depth to the control system.

[0106] S2. The control system determines whether the main body of the cage needs to rise or sink based on the target depth and the current depth.

[0107] If the target depth is less than the current depth, the main body of the cage needs to be raised. The difference between the target depth and the current depth is the target raising distance.

[0108] If the target depth is greater than the current depth, the main body of the cage needs to be lowered. The difference between the target depth and the current depth is the target lowering distance.

[0109] S3. When the main body of the cage needs to rise, the control system controls the amount of oil entering the first inlet and outlet of the hydraulic cylinder and the amount of oil exiting the second inlet and outlet of the hydraulic cylinder into the oil tank according to the target rising distance, so that the main body of the cage rises to the target depth.

[0110] When the main body of the cage needs to be lowered, the control system controls the amount of oil discharged from the first inlet and outlet of the hydraulic cylinder to the oil tank and the amount of oil fed from the oil tank to the second inlet and outlet of the hydraulic cylinder according to the target lowering distance, so that the main body of the cage can be lowered to the target depth.

[0111] It should be noted that the target depth is set by the operator on the software interface of the control system;

[0112] Once the main body of the cage rises or sinks to the target depth, the control system will conduct a final assessment to confirm that all parameters are within the normal range and will update the status display to the operator.

[0113] In a more specific embodiment, S3 is specifically:

[0114] When the main body of the cage needs to rise, the control system controls the amount and speed of oil entering the first inlet and outlet of the hydraulic cylinder and the amount and speed of oil exiting the second inlet and outlet of the hydraulic cylinder into the oil tank according to the target rising distance, so that the main body of the cage rises to the target depth.

[0115] When the main body of the cage needs to be lowered, the control system controls the amount and speed of oil discharged from the first inlet and outlet of the hydraulic cylinder to the oil tank, and the amount and speed of oil entering from the oil tank to the second inlet and outlet of the hydraulic cylinder, according to the target lowering distance, so that the main body of the cage can be lowered to the target depth.

[0116] It should be noted that when the cage body approaches the target depth, the control system may slow down the oil inlet and outlet speed and the piston movement speed to achieve a smooth approach and avoid excessive impact.

[0117] If the main body of the cage encounters any resistance or external factors that affect the lifting process, the control system can adjust the speed of oil inlet and outlet to deal with these situations. The control system can also control the direction of the main body of the cage.

[0118] This invention, through the control of a hydraulic system, can precisely control the rising and sinking of the net cages according to the needs of aquaculture. In severe weather conditions such as typhoons, it can quickly sink underwater to protect the organisms inside the cages, and can quickly float up when needed for harvesting or inspection. It also works with anchor chains and a fixing system to secure the position of the net cage body in the water, preventing displacement caused by ocean currents or wind.

[0119] This invention, by controlling the ballast water tank and hydraulic system, can precisely control the rising and sinking of the net cage according to weather conditions or aquaculture needs. In severe weather conditions such as typhoons, it can quickly sink underwater, and the anchor chain and fixing system can determine the position of the net cage body in the water, preventing displacement caused by ocean currents or wind, thus protecting the organisms in the aquaculture cage. After the typhoon, it can float up again to facilitate normal aquaculture activities.

[0120] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting cage for wind and wave protection, characterized in that, include: The cage body, hydraulic system, and fixing system; The securing system includes a rope, a fixing element, and an automatic reel-in, wherein the rope is connected to the fixing element; The density of the fastener is greater than that of seawater, and the fastener is used to fix it to the seabed; The hydraulic system includes a hydraulic cylinder and an oil tank, with the hydraulic cylinder connected to the oil tank. The hydraulic cylinder is equipped with a piston and a piston rod. The bottom of the hydraulic cylinder has an opening. One end of the piston rod passes through the opening and is connected to the rope. The other end of the piston rod is connected to the piston. The hydraulic cylinder is connected to the main body of the cage; The automatic retractor is connected to the rope to adjust its length, allowing the piston rod to have the following two operating states: In the initial state: the piston is located near the top of the hydraulic cylinder, and the piston rod is retracted into the hydraulic cylinder; When the main body of the net cage sinks: oil is fed into the first inlet and outlet of the hydraulic cylinder from the oil tank, and oil is discharged from the second inlet and outlet of the hydraulic cylinder into the oil tank. At the same time, the automatic reel in the rope. The automatic reel in pulls the piston rod to move the piston down along the inner wall of the hydraulic cylinder. At this time, the position of the hydraulic cylinder remains unchanged. The piston is adjusted to a position close to the bottom of the hydraulic cylinder, and the piston rod also extends out of the hydraulic cylinder. The rope is also in a taut state. Then, the automatic reel in is controlled to stop reeling in the rope, so that oil is discharged from the first inlet and outlet of the hydraulic cylinder into the oil tank, and oil is fed into the second inlet and outlet of the hydraulic cylinder from the oil tank. The piston and the piston rod are held up by the fixing system and cannot move up. By continuously feeding and discharging oil, the hydraulic cylinder is driven to descend, causing the main body of the net cage to sink to avoid wind and waves.

2. The lifting cage for wind and wave protection according to claim 1, characterized in that, The fixing system also includes: an upper pulley and a lower pulley; The rope passes over the upper pulley and the lower pulley, the upper pulley being connected to the piston rod, and the lower pulley being connected to the fixing member.

3. The lifting cage for wind and wave protection according to claim 1, characterized in that, Multiple anchor chains are symmetrically arranged on the main body of the cage. One end of the anchor chain is connected to the main body of the cage, and the other end of the anchor chain is connected to the seabed.

4. The lifting cage for wind and wave protection according to claim 1, characterized in that, The hydraulic cylinder is connected to the center of the main body of the cage.

5. The lifting cage for wind and wave protection according to claim 1, characterized in that, The main body of the cage includes a cage frame, a netting, and a cage cover; The netting covers the cage frame, and the cage cover is installed on top of the cage frame.

6. The lifting gabion for wind and wave protection according to claim 5, characterized in that, The cage frame is made of steel.

7. The lifting cage for wind and wave protection according to claim 1, characterized in that, The fastener is a concrete anchor.

8. A lifting system for wind and wave protection, characterized in that, include: The control system and the lifting cage for wind and waves as described in any one of claims 1-7; The main body of the cage is equipped with a depth monitoring device, which is connected to the control system. The control system is connected to the hydraulic system and is used to control the oil flow into and out of the hydraulic cylinder.

9. A lifting method for a lifting system used for wind and wave protection, characterized in that, An implementation of the lifting system for wind and wave protection as described in claim 8 includes: S1. The control system sets the target depth, the depth monitoring device detects the current depth, and the depth monitoring device sends the current depth to the control system. S2. The control system determines whether the main body of the cage needs to rise or sink based on the target depth and the current depth. If the target depth is less than the current depth, the main body of the cage needs to be raised. The difference between the target depth and the current depth is the target raising distance. If the target depth is greater than the current depth, the main body of the cage needs to be lowered. The difference between the target depth and the current depth is the target lowering distance. S3. When the main body of the cage needs to rise, the control system controls the amount of oil entering the first inlet and outlet of the hydraulic cylinder and the amount of oil exiting the second inlet and outlet of the hydraulic cylinder into the oil tank according to the target rising distance, so that the main body of the cage rises to the target depth. When the main body of the cage needs to be lowered, the control system controls the amount of oil discharged from the first inlet and outlet of the hydraulic cylinder to the oil tank and the amount of oil fed from the oil tank to the second inlet and outlet of the hydraulic cylinder according to the target lowering distance, so that the main body of the cage can be lowered to the target depth.

10. The lifting method for a lifting system for wind and wave protection according to claim 9, characterized in that, Specifically, S3 is: When the main body of the cage needs to rise, the control system controls the amount and speed of oil entering the first inlet and outlet of the hydraulic cylinder and the amount and speed of oil exiting the second inlet and outlet of the hydraulic cylinder into the oil tank according to the target rising distance, so that the main body of the cage rises to the target depth. When the main body of the cage needs to be lowered, the control system controls the amount and speed of oil discharged from the first inlet and outlet of the hydraulic cylinder to the oil tank, and the amount and speed of oil entering from the oil tank to the second inlet and outlet of the hydraulic cylinder, according to the target lowering distance, so that the main body of the cage can be lowered to the target depth.

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