A lifting type truss net cage for semi-submersible culture sitting on the bottom and avoiding the platform

Abstract

The application belongs to the technical field of marine aquaculture, and discloses a lifting type truss net cage for semi-submersible cultivation and bottom-avoiding platform, which comprises a truss net cage structure, wherein a net is arranged in the truss net cage structure; the lifting type truss net cage further comprises a multi-working-condition ballast tank assembly, a positioning ballast tank, a traction rope and an in-out fish assembly; the multi-working-condition ballast tank assembly is connected to the front and back surfaces of the bottom end of the truss net cage structure; according to the sea condition forecast or real-time monitoring data, the truss net cage structure can be actively and quickly switched between the floating, semi-submersible and fully-submersible states; when extreme weather such as typhoon is encountered, the truss net cage structure can be dived to the semi-submersible or fully-submersible state to avoid the area with the strongest surface wind and wave impact, thereby greatly reducing the damage of the truss net cage structure and the risk of fish escape, and realizing the leap from passive bearing to active avoidance.

Description

Technical Field

[0001] This invention belongs to the field of marine aquaculture technology, and in particular relates to a lifting truss cage for semi-submersible aquaculture with a bottom-sitting platform. Background Technology

[0002] With the decline of global marine fishery resources and the limitation of land-based aquaculture space, deep-sea aquaculture has become an important development direction for the aquaculture industry. Semi-submersible truss cages have become one of the mainstream equipment for deep-sea aquaculture due to their advantages such as strong resistance to wind and waves, wide range of applicable water depths, and large aquaculture capacity.

[0003] Traditional semi-submersible cages typically employ a fixed buoyancy design, meaning their draft and stability remain largely unchanged after deployment. However, the marine environment is complex and variable, presenting different "operating conditions":

[0004] Calm working conditions: The net cage needs to provide a large volume of aquaculture water and maintain a freeboard height above the water surface to facilitate daily operations such as feeding and observation;

[0005] Severe sea conditions (such as typhoons and large waves): The cages need to have stronger survivability by diving to deeper water layers to avoid the direct impact of giant waves and reduce structural stress;

[0006] Existing fish cages lack the ability to actively and quickly switch between different operating conditions. When encountering extreme weather, they can only passively withstand the impact of wind and waves, posing a huge risk of structural damage to the cages and fish escaping. Summary of the Invention

[0007] This invention addresses the problem that existing net cages lack the ability to actively and quickly switch between different operating conditions. In extreme weather, they often can only passively withstand the impact of wind and waves, posing a significant risk of structural damage and fish escape. The invention proposes the following technical solution:

[0008] A lifting truss cage for semi-submersible aquaculture with a bottom-sitting platform includes: a truss cage structure, wherein a net is installed inside the truss cage structure;

[0009] The lifting truss cage also includes a multi-condition ballast tank assembly, a positioning ballast tank, a towing rope, and a fish entry and exit assembly;

[0010] The multi-condition ballast tank assembly is connected to the front and back of the bottom end of the truss gabion structure, and the positioning ballast tank is connected to the other two sides of the bottom end of the truss gabion structure. In cooperation with the multi-condition ballast tank assembly, by controlling the inflow and outflow of each ballast tank, the truss gabion structure can be in a floating, semi-submerged and fully submerged state in the water.

[0011] The number of towing ropes is set to two, and they are respectively connected to two multi-condition ballast tank assemblies;

[0012] The fish entry and exit assembly is connected inside the truss cage structure and is used for fish entry and exit.

[0013] As a preferred embodiment of the above technical solution, a connecting frame is installed on the outside of the truss mesh structure, and a buffer structure is sleeved on the outside of the connecting frame.

[0014] As a preferred embodiment of the above technical solution, the fish inlet / outlet assembly includes two tapered tubes fixedly installed inside the truss cage structure. Multiple positioning blocks are fixedly installed on the outer side of the tapered tubes. One of the positioning blocks is rotatably connected to a rotating plate, and the other positioning block is slidably connected to a fixing pin that passes through the rotating plate.

[0015] As a preferred embodiment of the above technical solution, the tapered tube has multiple placement grooves circumferentially arranged inside, and a circular groove is provided at one end of the placement groove near the rotating plate inside the tapered tube, and a slot is provided inside the tapered tube that communicates with the circular groove.

[0016] As a preferred embodiment of the above technical solution, a circular ring is rotatably connected inside the circular groove of the tapered tube, a pusher is fixedly installed on the outer side of the circular ring at the position inside the groove, and an abutment block is movably connected inside the circular ring at the position of the placement groove, the abutment block being located inside the placement groove.

[0017] As a preferred embodiment of the above technical solution, limit plates are fixedly installed at equal intervals inside the ring, with two adjacent limit plates forming a group. An expansion joint is fixedly installed inside the ring between two limit plates, and the expansion joint is fixedly connected to the abutment block.

[0018] As a preferred embodiment of the above technical solution, a cover plate is fixedly installed at one end of the ring, and the cover plate is in contact with the end face of the abutment block near the rotating plate.

[0019] As a preferred embodiment of the above technical solution, the abutment block is arc-shaped and fits against the inner wall of the conical tube, and the edge of the abutment block near the inner wall of the conical tube has rounded corners.

[0020] As a preferred embodiment of the above technical solution, two circular holes are equidistantly formed on one end face of the positioning block and the push bar, and a limit pin is fixedly installed inside the circular holes.

[0021] The beneficial effects of this invention are as follows:

[0022] (1) The truss cage structure applied for can actively and quickly switch between floating, semi-submerged and fully submerged states according to sea state forecasts or real-time monitoring data. When encountering extreme weather such as typhoons, the truss cage structure can be submerged to a semi-submerged or fully submerged state to avoid the area with the strongest surface wind and waves, which greatly reduces the risk of damage to the truss cage structure and fish escape, and realizes the leap from "passive bearing" to "active avoidance".

[0023] (2) When the wind and waves are small on weekdays, the truss cage structure can remain floating, which is convenient for daily management operations such as feeding, observation and fishing. In general wind and waves or seasonal severe sea conditions, it can be semi-submerged, which ensures safety while maintaining good water exchange. This multi-condition adaptability significantly extends the working time of the truss cage structure, expands its applicable sea area, and improves the economic benefits and reliability of aquaculture.

[0024] (3) The symmetrically arranged multi-condition ballast tank components and the positioning ballast tank together form a stable ballast system, which can accurately control the diving depth and attitude of the truss cage structure, ensuring that it can maintain stable hydrodynamic performance under any working condition, and providing a safe and stable growth environment for fish in the truss cage structure.

[0025] (4) This method changes the existing technology, which requires cutting and replacing the net during the fish entry and exit process. This method saves costs and improves connection efficiency.

[0026] (5) It can make the connection between the fish inlet and outlet pipe more stable, and prevent the fish inlet and outlet pipe from separating from the conical pipe due to wave fluctuations after the connection is made, thereby effectively ensuring the stability of the connection and further facilitating the entry and exit of fish in the net cage. Attached Figure Description

[0027] Figure 1 The diagram shown is a structural schematic of a lifting truss cage for semi-submersible aquaculture with a bottom-sitting platform, as described in Example 1.

[0028] Figure 2 The diagram shown is a cross-sectional view of the multi-condition ballast tank assembly in Embodiment 1;

[0029] Figure 3 The diagram shown is a structural schematic of the fish inlet / outlet assembly in Embodiment 1;

[0030] Figure 4 The diagram shown is a schematic representation of the internal structure of the tapered tube in Example 1;

[0031] Figure 5 The diagram shown is a schematic diagram of the opening structure of the placement slot in Embodiment 1;

[0032] Figure 6The diagram shown is a schematic of the installation structure of the cover plate in Embodiment 1;

[0033] Figure 7 The diagram shown is a schematic diagram of the installation structure of the abutment block in Embodiment 1;

[0034] Figure 8 The diagram shown is a schematic diagram of the installation structure of the telescopic component in Embodiment 1.

[0035] In the diagram: 1. Truss cage structure; 2. Netting; 3. Multi-condition ballast tank assembly; 31. Rectangular ballast tank; 32. Inlet tee; 33. Electric valve; 34. Divider plate; 35. Drain pump; 4. Positioning ballast tank; 5. Towing rope; 6. Fish inlet / outlet assembly; 61. Conical tube; 62. Positioning block; 63. Rotating plate; 64. Fixing pin; 65. Placement slot; 66. Circular slot; 67. Slot opening; 68. Push bar; 69. Ring; 610. Limiting plate; 611. Telescopic component; 612. Abutment block; 613. Cover plate; 7. Connecting frame; 8. Buffer structure. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0037] Example 1

[0038] This invention provides a lifting truss cage for semi-submersible aquaculture with a bottom-sitting platform, such as... Figures 1 to 8 As shown, it includes: a truss mesh box structure 1, and a mesh cover 2 installed inside the truss mesh box structure 1;

[0039] The lifting truss cage also includes a multi-condition ballast tank assembly 3, a positioning ballast tank 4, a towing rope 5, and a fish entry and exit assembly 6;

[0040] The multi-condition ballast tank assembly 3 is connected to the front and back of the bottom end of the truss gabion structure 1. The positioning ballast tank 4 is connected to the other two sides of the bottom end of the truss gabion structure 1 and works in conjunction with the multi-condition ballast tank assembly 3. By controlling the inlet and outlet of each ballast tank, the truss gabion structure 1 can be in a floating, semi-submerged and fully submerged state in the water.

[0041] The number of towing ropes 5 is set to two, and they are respectively connected to two multi-condition ballast tank components 3;

[0042] The fish inlet / outlet assembly 6 is connected inside the truss cage structure 1 and is used for fish inlet / outlet.

[0043] Existing technologies lack the ability to proactively and quickly switch between different working conditions. When encountering extreme weather, they can only passively withstand the impact of wind and waves, posing a huge risk of damage to the cage structure and fish escaping.

[0044] In this application, the multi-condition ballast tank assembly 3 and the positioning ballast tank 4 effectively solve the problems of single working conditions and poor wind and wave resistance of the existing cages.

[0045] Meanwhile, the fish inlet / outlet component 6 of this application effectively solves the problem of slow fish inlet speed and also solves the problem of needing to cut the existing netting 2;

[0046] In use, when the truss cage structure 1 needs to submerge, water is injected into the multi-condition ballast tank assembly 3 and the positioning ballast tank 4. The weight of the water drives the truss cage structure 1 to submerge. When it floats up, the water inside the multi-condition ballast tank assembly 3 and the positioning ballast tank 4 is discharged. When it needs to be semi-submerged, some of the liquid inside the multi-condition ballast tank assembly 3 is discharged. When it needs to be towed, the water inside the multi-condition ballast tank assembly 3 and the positioning ballast tank 4 is emptied. Then, the ship and the towing rope 5 are connected, and then it is towed.

[0047] When fish need to enter or exit, the truss cage structure 1 is floated up. At this time, the fish entry / exit component 6 is opened, and then the fish release pipe is connected to it (the fish release pipe has a protruding ring on the outer side of the end for connecting and fixing with the fish entry / exit component 6).

[0048] The truss cage structure 1 has a net 2 installed inside. The truss cage structure 1 is assembled from multiple columns. Multi-condition ballast tank components 3 are fixedly installed on the front and back of the bottom of the truss cage structure 1. Positioning ballast tanks 4 are fixedly installed on the other two sides of the bottom of the truss cage structure 1. Two towing ropes 5 are provided, each connected to one of the two multi-condition ballast tank components 3. Fish entry / exit components 6 are installed on the columns of the truss cage structure 1. Above the internal frame of the truss cage structure 1, a four-point anchoring positioning system, a multi-energy complementary power supply system, a smart aquaculture monitoring system, and a central control system are also installed. The four-point anchoring positioning system includes a GPS positioning module; the multi-energy complementary power supply system includes a 10kW wind power generation module, a 10kW photovoltaic power generation module, a 75kW diesel emergency power generation module, and a 200kWh energy storage battery module; the smart aquaculture monitoring system includes an environmental... The system includes monitoring sensors, fish school video monitoring equipment, and automatic feeding equipment. The central control system is connected to the multi-condition ballast tank system (positioning ballast tank 4 and multi-condition ballast tank component 3), the mooring positioning system, the multi-energy complementary power supply system, and the smart aquaculture monitoring system to achieve adaptive switching between three conditions and coordinated management of the entire system. The central control system is equipped with a condition switching trigger module, which can automatically or manually start the ballast tank loading adjustment process based on water temperature, dissolved oxygen, and flow rate data collected by environmental monitoring sensors. The multi-energy complementary power supply system includes an energy management unit that supports a tiered power supply logic that prioritizes photovoltaic and wind power supply, replenishes energy storage batteries, and starts diesel generators for emergency power generation. Emergency power supply is prioritized for the ballast system, navigation equipment, and monitoring equipment. The smart aquaculture monitoring system is connected to the shore-based workstation and cloud platform via 5G / dedicated line to achieve real-time data transmission and remote management.

[0049] To achieve the above embodiment, the following solution is provided for how to fit the truss cage structure 1 with the shore: a connecting frame 7 is installed on the outside of the truss cage structure 1, and a buffer structure 8 is sleeved on the outside of the connecting frame 7.

[0050] When the truss cage structure 1 is attached to the bank, the connecting frame 7 is moved, so that the buffer structure 8 of the connecting frame 7 is attached to the bank, thereby achieving the purpose of buffering.

[0051] Specifically, a connecting frame 7 is fixedly installed on the outside of the truss net box structure 1. The connecting frame 7 is composed of multiple columns, horizontal plates, guardrails and climbing ladders. The height of the connecting frame 7 is equal to the height of the net 2. It is used to effectively buffer the shore when it is semi-submerged, fully submerged and floating. Multiple buffer structures 8 are fixedly installed at equal intervals on the outside of the two columns of the connecting frame 7 near the shore. The buffer structures 8 are specifically made of buffer rubber.

[0052] To achieve the floating, semi-submersible, and fully submersible states of the truss cage structure 1 in the above embodiments, the following solutions are provided: Figure 1 and Figure 2As shown, the multi-condition ballast tank assembly 3 includes a rectangular ballast tank 31 fixedly installed on the front and back of the bottom end of the truss gabion structure 1. A liquid inlet tee pipe 32 is symmetrically embedded on both sides of the top of the rectangular ballast tank 31. An electric valve 33 is installed inside the liquid inlet tee pipe 32. Three partition plates 34 are fixedly installed on the inner wall of the rectangular ballast tank 31. The three partition plates 34 divide the interior of the rectangular ballast tank 31 into four placement chambers of equal volume. The two liquid outlets of the liquid inlet tee pipe 32 are located inside two adjacent placement chambers. Drain pumps 35 are installed inside the positioning ballast tank 4 and the multiple placement chambers inside the rectangular ballast tank 31.

[0053] During use, during full submersion: water is pumped into the rectangular ballast tank 31 and the positioning ballast tank 4. When floating is required, the water is drained by the drainage pump 35.

[0054] During the semi-submersion process, by controlling the corresponding electric valves 33, two of the placement compartments of the rectangular ballast tank 31 can be filled with water, while the remaining placement compartments remain empty.

[0055] Specifically, the rectangular ballast tanks 31 at the bottom front and back of the truss gabion structure 1 have symmetrically threaded liquid inlet tee pipes 32 on both sides of the top of the rectangular ballast tanks 31. Electric valves 33 are installed inside the liquid inlet tee pipes 32. Three partition plates 34 are welded to the inner wall of the rectangular ballast tanks 31, dividing the interior of the rectangular ballast tanks 31 into four placement compartments of equal volume. The two liquid outlets of the liquid inlet tee pipes 32 are located inside two adjacent placement compartments. Drain pumps 35 are installed inside the multiple placement compartments inside the positioning ballast tanks 4 and the rectangular ballast tanks 31 by screws. The water outlet of the drainage pumps 35 is located outside the positioning ballast tanks 4 and the rectangular ballast tanks 31. The top of the positioning ballast tanks 4 is connected to a water inlet pipe. The water inlet of both the water inlet pipe and the liquid inlet tee pipe 32 is connected to the water outlet of the water pump.

[0056] To achieve the above embodiment, how to change the way the fish inlet net 2 of the conical tube 61 needs to be cut in the prior art, thereby improving the fish entry and exit speed, the following solution is provided: the fish entry and exit assembly 6 includes two conical tubes 61 fixedly installed inside the truss net box structure 1. Multiple positioning blocks 62 are fixedly installed on the outside of the conical tubes 61. A rotating plate 63 is rotatably connected inside one of the positioning blocks 62, and a fixing pin 64 that passes through the rotating plate 63 is slidably connected inside the other positioning block 62.

[0057] In use, pull the fixing pin 64 to separate the fixing pin 64 from the positioning block 62 and the rotating plate 63, then rotate the rotating plate 63. The rotating plate 63 rotates inside another positioning block 62, thereby opening and closing the tapered tube 61. Then, the fish tube can be directly inserted into the tapered tube 61.

[0058] Specifically, two tapered tubes 61 are welded to the columns of the truss grid structure 1. The diameter of the end of the tapered tube 61 away from the center of the truss grid structure 1 is smaller than the diameter of the other end. Two positioning blocks 62 are symmetrically welded to the outside of the maximum outer diameter of the tapered tube 61. A rotating plate 63 is rotatably connected inside one of the positioning blocks 62 through a rotating shaft. Positioning holes are opened inside the rotating plate 63 and the other positioning block 62. A fixing pin 64 is threadedly connected inside the positioning hole.

[0059] To achieve the above embodiment's method of fixing the inlet and outlet fish tubes, the following solution is provided: Figures 3 to 8 As shown, the tapered tube 61 has multiple placement slots 65 circumferentially arranged inside, with rounded corners at the edges. A circular groove 66 is formed at the end of the tapered tube 61 near the rotating plate 63, and a slot 67 communicating with the circular groove 66 is formed inside the tapered tube 61. A circular ring 69 is rotatably connected inside the circular groove 66 of the tapered tube 61. A pusher strip 68 is fixedly installed on the outer side of the circular ring 69 at the position inside the slot 67. An abutment block 612 is movably connected inside the circular ring 69 at the position of the placement slot 65. The abutment block 612 has an arc-shaped corner at its edge and is located inside the placement slot 65. The circular ring 69 has equidistant... A limiting plate 610 is fixedly installed, with two adjacent limiting plates 610 forming a group. A telescopic component 611 is fixedly installed inside the ring 69 between the two limiting plates 610. The telescopic component 611 is fixedly connected to the abutment block 612. A cover plate 613 is fixedly installed at one end of the ring 69. The cover plate 613 and the end face of the abutment block 612 near the rotating plate 63 are in contact with each other. The abutment block 612 is arc-shaped and is in contact with the inner wall of the tapered tube 61. The edge of the abutment block 612 near the inner wall of the tapered tube 61 has rounded corners. Two circular holes are equidistantly opened on one end face of the positioning block 62 and the push bar 68. Limiting pins are fixedly installed inside the circular holes.

[0060] In use, pull the limiting pin to separate it from the positioning block 62 and the pushing bar 68. Then push the pushing bar 68. As the pushing bar 68 moves along the inside of the slot 67, it drives the ring 69 to rotate inside the circular groove 66. At this time, the ring 69 drives the abutment block 612 to rotate along the inside of the placement groove 65 and move towards the inner wall of the tapered tube 61 through the placement groove 65. At this time, the distance between the abutment block 612 and the inner wall of the tapered tube 61 changes. When the height changes, it drives the abutment block 612 to move. The abutment block 612 drives the telescopic member 611 to run and move towards the axis of the tapered tube 61 between the two limiting plates 610, thereby abutting and fixing the inlet and outlet fish tube inserted into the tapered tube 61.

[0061] The tapered tube 61 has multiple placement slots 65 (at least three, twelve in this application) evenly spaced around its interior. A circular groove 66 is formed at one end of the placement slot 65 near the rotating plate 63. A slot opening 67 communicating with the circular groove 66 is also formed inside the tapered tube 61. A circular ring 69 is rotatably connected inside the circular groove 66. A pusher bar 68, L-shaped, is welded and installed on the outer side of the circular ring 69 at the position inside the slot opening 67. An abutment block 612 is movably connected inside the circular ring 69 at the position of the placement slot 65. The abutment block 612 is located inside the placement slot 65. Limiting plates 610 are fixedly installed at equal intervals inside the circular ring 69, with adjacent limiting plates 610 forming a group. An extension member 611 is fixedly installed inside the 9 between two limiting plates 610. The extension member 611 is composed of two rectangular plates and an elastic rubber. The two rectangular plates are respectively installed on the ring 69 and the abutment block 612 by screws. The extension member 611 is fixedly connected to the abutment block 612. A cover plate 613 is fixedly installed at one end of the ring 69. The cover plate 613 and the end face of the abutment block 612 near the rotating plate 63 are in contact with each other. The abutment block 612 is arc-shaped and is in contact with the inner wall of the tapered tube 61. The edge of the abutment block 612 near the inner wall of the tapered tube 61 has rounded corners. Two round holes are equidistantly opened on one end face of the positioning block 62 and the push bar 68. Limiting pins are fixedly installed inside the round holes to fix the push bar 68.

[0062] Working principle: When the truss cage structure 1 needs to be submerged, during the full submersion process: water is injected into the rectangular ballast tank 31 and the positioning ballast tank 4 by water pumps. When it needs to float, the water is discharged by drainage pump 35.

[0063] During the semi-submersion process, by controlling the corresponding electric valves 33, two of the placement compartments of the rectangular ballast tank 31 are filled with water, while the remaining placement compartments are empty. When towing is required, the water inside the multi-condition ballast tank assembly 3 and the positioning ballast tank 4 is drained, and then the ship and towing rope 5 are connected for towing. When the truss cage structure 1 is attached to the shore, the buffer structure 8 of the connecting frame 7 is attached to the shore first to achieve the purpose of buffering and reduce the impact force between the truss cage structure 1 and the shore.

[0064] Next, pull the fixing pin 64 to separate the fixing pin 64 from the positioning block 62 and the rotating plate 63. Then rotate the rotating plate 63 inside another positioning block 62, thereby opening and closing the conical tube 61. Then, put the fish inlet / outlet tube directly into the conical tube 61. At this time, guided by the conical tube 61, the fish inlet / outlet tube enters the predetermined position.

[0065] Next, pull the limiting pin to separate it from the positioning block 62 and the pushing bar 68. Then push the pushing bar 68. As the pushing bar 68 moves along the inside of the slot 67, it drives the ring 69 to rotate inside the circular groove 66. At this time, the ring 69 drives the abutment block 612 to rotate along the inside of the placement groove 65. Under the action of the rounded corner of the placement groove 65 and the arc angle of the abutment block 612, the abutment block 612 moves along the inner wall of the tapered tube 61 and towards the axis of the tapered tube 61. This causes the position of the abutment block 612 to change. When the height changes, it drives the abutment block 612 to move. The abutment block 612 drives the telescopic member 611 to run and move along the space between the two limiting plates 610 towards the axis of the tapered tube 61, thereby abutting and fixing the inlet and outlet fish tube inserted into the tapered tube 61.

[0066] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A lifting truss cage for semi-submersible aquaculture with a bottom-sitting platform, characterized in that, include: A truss mesh box structure (1) is provided with a mesh cover (2) inside the truss mesh box structure (1). The lifting truss cage also includes a multi-condition ballast tank assembly (3), a positioning ballast tank (4), a towing rope (5), and a fish entry and exit assembly (6). The multi-condition ballast tank assembly (3) is connected to the front and back of the bottom end of the truss gabion structure (1), and the positioning ballast tank (4) is connected to the other two sides of the bottom end of the truss gabion structure (1) and cooperates with the multi-condition ballast tank assembly (3). By controlling the inlet and outlet of each ballast tank, the truss gabion structure (1) is in a floating, semi-submerged and fully submerged state in the water. The number of the traction ropes (5) is set to two, and they are respectively connected to two multi-condition ballast tank assemblies (3). The fish entry and exit assembly (6) is connected inside the truss cage structure (1) and is used for fish entry and exit; The fish inlet / outlet assembly (6) includes two tapered tubes (61) fixedly installed inside the truss cage structure (1). Multiple positioning blocks (62) are fixedly installed on the outside of the tapered tubes (61). One of the positioning blocks (62) is rotatably connected to a rotating plate (63), and the other positioning block (62) is slidably connected to a fixing pin (64) that passes through the rotating plate (63). The tapered tube (61) has multiple placement slots (65) circumferentially arranged inside. The tapered tube (61) has a circular groove (66) connected to the placement slot (65) near the rotating plate (63) at one end. The tapered tube (61) has a slot (67) connected to the circular groove (66). A ring (69) is rotatably connected inside the circular groove (66) of the tapered tube (61). A pusher (68) is fixedly installed on the outside of the ring (69) at the position inside the groove (67). An abutment block (612) is movably connected inside the ring (69) at the position inside the placement groove (65). The abutment block (612) is located inside the placement groove (65). Limiting plates (610) are fixedly installed at equal intervals inside the ring (69). Two adjacent limiting plates (610) form a group. A telescopic member (611) is fixedly installed inside the ring (69) between the two limiting plates (610). The telescopic member (611) is fixedly connected to the abutment block (612).

2. The lifting truss cage for semi-submersible aquaculture with a bottom-sitting platform as described in claim 1, characterized in that, A connecting frame (7) is installed on the outside of the truss mesh structure (1), and a buffer structure (8) is sleeved on the outside of the connecting frame (7).

3. A lifting truss cage for semi-submersible aquaculture with a bottom-sitting platform as described in claim 1, characterized in that, The abutment block (612) is arc-shaped and fits against the inner wall of the tapered tube (61). The abutment block (612) has rounded corners on the edge near the inner wall of the tapered tube (61).

4. A lifting truss cage for semi-submersible aquaculture with a bottom-sitting platform as described in claim 1, characterized in that, The positioning block (62) and the push bar (68) have two circular holes equidistantly spaced on one end face, and a limit pin is fixedly installed inside the circular hole.

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