Marine aquaculture device

Abstract

The application discloses a marine aquaculture device, which comprises a net cage assembly, a floating plate assembly, a wind and wave resisting mechanism, a power storage control system and a power generation assembly; the bottom of the net cage assembly is provided with a counterweight assembly and an anchoring assembly; the floating plate assembly is installed on the top of the outer wall of the net cage assembly; the outer wall of the floating plate assembly is provided with a buffer assembly; the wind and wave resisting mechanism comprises a rotating ring and a plurality of guide plate assemblies; the rotating ring is rotationally connected to the outer wall of the buffer assembly, and the plurality of guide plate assemblies are circumferentially and spacedly installed on the outer wall of the rotating ring; the power storage control system is installed on the net cage assembly; the power generation assembly comprises a wind power generation device and a photovoltaic power generation device, and the wind power generation device and the photovoltaic power generation device are both installed on the top of the net cage assembly; wherein the wind power generation device and the photovoltaic power generation device are both electrically connected with the power storage control system. The application can effectively disperse and weaken the impact force of wind and waves, provide a stable growth environment for the cultured organisms, significantly improve the wind and wave resisting capacity, and improve the aquaculture efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of aquaculture, in particular to a marine aquaculture device. Background Art

[0002] In the field of marine aquaculture, traditional aquaculture equipment often exposes numerous flaws when faced with adverse weather conditions. First, existing equipment generally lacks effective wind and wave resistance. This results in aquaculture organisms being easily disturbed or even escaping during extreme weather conditions such as strong winds and high waves, seriously affecting aquaculture efficiency and survival rates. Second, traditional aquaculture equipment also lacks buoyancy stability and resistance to marine environmental impacts, making it easily damaged by wave impacts, which in turn affects the growth environment of aquaculture organisms and leads to low aquaculture efficiency.

[0003] Therefore, a marine aquaculture device is proposed. Summary of the Invention

[0004] The object of the present invention is to provide a marine aquaculture device, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above-mentioned object, the present invention provides the following solution: The present invention provides a marine aquaculture device, comprising:

[0006] A net cage assembly, wherein a counterweight assembly and an anchor assembly are installed at the bottom of the net cage assembly;

[0007] A floating plate assembly is mounted on the top of the outer wall of the cage assembly; a buffer assembly is mounted on the outer wall of the floating plate assembly;

[0008] An anti-wave mechanism, comprising a rotating ring and a plurality of guide plate assemblies; the rotating ring is rotatably connected to the outer wall of the buffer assembly, and the plurality of guide plate assemblies are circumferentially spaced apart and mounted on the outer wall of the rotating ring;

[0009] an electricity storage control system, the electricity storage control system being mounted on the grid cage assembly;

[0010] A power generation component, the power generation component including a wind power generation device and a photovoltaic power generation device, the wind power generation device and the photovoltaic power generation device are both installed on the top of the cage component;

[0011] Wherein, the wind power generation equipment and the photovoltaic power generation equipment are both electrically connected to the power storage control system.

[0012] According to a marine aquaculture device provided by the present invention, an underwater robot is provided in the cage assembly, a propeller and a camera are installed on the underwater robot, wing panels are installed on both sides of the underwater robot, cleaning brushes are installed on the wing panels, and the camera and the propeller are electrically connected to the power storage control system.

[0013] According to a marine aquaculture device provided by the present invention, the floating plate assembly includes a first mounting ring, a second mounting ring and several elliptical air bags; the first mounting ring is fixedly sleeved on the top of the outer wall of the cage assembly, and the second mounting ring is arranged on the outside of the first mounting ring; the several elliptical air bags are fixedly connected and communicated through cylindrical air bags, and the cylindrical air bags are fixedly installed between the first mounting ring and the second mounting ring; the buffer assembly is fixedly installed on the outer wall of the second mounting ring.

[0014] According to a marine aquaculture device provided by the present invention, the buffer assembly includes a plurality of first rubber columns and a plurality of second rubber columns, the plurality of first rubber columns and the plurality of second rubber columns are circumferentially mounted on the outer wall of the second mounting ring at equal intervals, the second rubber columns are located directly below the first rubber columns, and the plurality of first rubber columns and the plurality of second rubber columns are arranged in a one-to-one correspondence;

[0015] A rubber connecting column is fixedly installed between the first rubber column and the second rubber column, and a plurality of buffer through holes are formed through the side walls of the first rubber column and the second rubber column;

[0016] A support ring is fixedly mounted on one end of the first rubber column away from the second mounting ring. The second rubber column is fixedly connected to the support ring. The rotating ring is rotatably connected to the outer wall of the support ring.

[0017] According to a marine aquaculture device provided by the present invention, the guide plate assembly includes a guide plate body arranged obliquely, a plurality of energy dissipation grooves are opened through the guide plate body, and a plurality of the guide plate bodies are installed on the outer wall of the rotating ring at equal intervals in the circumferential direction.

[0018] According to a marine aquaculture device provided by the present invention, the cage assembly includes a support frame and a net, a number of reinforcing ribs are installed between the support frames, and the net is detachably connected to the inner wall of the support frame; the counterweight assembly and the anchor assembly are both installed at the bottom of the support frame, the power storage control system is installed on the support frame, the wind power generation equipment and the photovoltaic power generation equipment are both installed on the top of the support frame, the first mounting ring is fixedly sleeved on the top of the outer wall of the support frame, and the underwater robot is arranged in the net.

[0019] According to a marine aquaculture device provided by the present invention, the counterweight assembly includes a plurality of counterweight blocks, and the plurality of counterweight blocks are fixedly mounted on the bottom of the support frame via connecting ropes; the plurality of counterweight blocks are arranged at equal intervals.

[0020] According to a marine aquaculture device provided by the present invention, the anchoring assembly includes a plurality of anchoring chains, which are installed at intervals on the bottom of the outer side wall of the support frame, and a fixed anchor is installed at one end of the anchoring chain away from the support frame.

[0021] According to a marine aquaculture device provided by the present invention, a T-shaped slider is installed on the outer wall of the support ring, a T-shaped slot is opened on the inner wall of the rotating ring, and the T-shaped slider is slidably connected to the T-shaped slot.

[0022] The present invention discloses the following technical effects:

[0023] The wind and wave resistance mechanism of the present invention includes a rotating ring and a guide plate assembly. The guiding action of the guide plate assembly can convert the impact of wind and waves into the rotation of the rotating ring, thereby effectively dispersing and weakening the impact force of wind and waves, significantly improving the stability of the device and enhancing the wind and wave resistance. It provides a stable growth environment for the cultured organisms in the cage assembly, thereby improving the culture efficiency and protecting the cultured organisms from the influence of severe weather.

[0024] The present invention makes full use of the abundant natural energy of the ocean through wind power generation equipment and photovoltaic power generation equipment, realizes energy self-sufficiency of the aquaculture device, reduces dependence on external power sources, and promotes environmental protection and sustainable development;

[0025] The present invention not only enhances the buoyancy stability of the device through the floating plate component and the buffer component, but also further protects the aquaculture device from direct impact of the marine environment through the buffering effect, thereby further improving the aquaculture efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic structural diagram of the marine aquaculture device of the present invention;

[0028] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0029] Figure 3Schematic diagram of the structure of the underwater robot in the present invention;

[0030] Figure 4 It is a schematic diagram of the connection between the wind and wave resistance mechanism and the second mounting ring in the present invention.

[0031] Among them, 1. Wind power generation equipment; 2. Photovoltaic power generation equipment; 3. Underwater robot; 4. Mounting seat; 5. Thruster; 6. Camera; 7. First mounting ring; 8. Second mounting ring; 9. Elliptical airbag; 10. Cylindrical airbag; 11. First rubber column; 12. Second rubber column; 13. Rubber connecting column; 14. Buffer through hole; 15. Support ring; 16. Rotating ring; 17. Guide plate body; 18. Energy dissipation groove; 19. Support frame; 20. Net; 21. Reinforcement rib; 22. Counterweight; 23. Connecting rope; 24. Anchor chain; 25. Fixed anchor; 26. T-type slider; 27. T-type slide. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figure 1-Figure 4 The present invention provides a marine aquaculture device, comprising:

[0035] The cage assembly has a counterweight assembly and an anchor assembly installed at the bottom;

[0036] A floating plate assembly is installed on the top of the outer wall of the cage assembly; a buffer assembly is installed on the outer wall of the floating plate assembly;

[0037] The wind and wave resistance mechanism includes a rotating ring 16 and a plurality of guide plate assemblies; the rotating ring 16 is rotatably connected to the outer wall of the buffer assembly, and the plurality of guide plate assemblies are circumferentially spaced and installed on the outer wall of the rotating ring 16;

[0038] The power storage control system is installed on the grid cage assembly;

[0039] The power generation component includes a wind power generation device 1 and a photovoltaic power generation device 2. The wind power generation device 1 and the photovoltaic power generation device 2 are both installed on the top of the cage component;

[0040] The wind power generation equipment 1 and the photovoltaic power generation equipment 2 are both electrically connected to the power storage control system; the power storage control system includes a PLC controller and a battery, and the wind power generation equipment 1, the photovoltaic power generation equipment 2 and the battery are electrically connected to the PLC controller;

[0041] Thus, the wind and wave resistance mechanism of the present invention includes a rotating ring 16 and a guide plate assembly. The guiding action of the guide plate assembly can convert the impact of wind and waves into the rotation of the rotating ring 16, thereby effectively dispersing and reducing the impact force of wind and waves, significantly improving the stability of the device and enhancing the wind and wave resistance, providing a stable growth environment for the cultured organisms in the cage assembly, thereby improving the culture efficiency and protecting the cultured organisms from the influence of severe weather.

[0042] The present invention fully utilizes the abundant natural energy of the ocean through the wind power generation equipment 1 and the photovoltaic power generation equipment 2, realizes energy self-sufficiency of the aquaculture device, reduces dependence on external power sources, and promotes environmental protection and sustainable development.

[0043] The present invention not only enhances the buoyancy stability of the device through the floating plate component and the buffer component, but also further protects the aquaculture device from direct impact of the marine environment through the buffering effect, thereby further improving the aquaculture efficiency.

[0044] In a further optimized solution, an underwater robot 3 is provided within the cage assembly. A propeller 5 and a camera 6 are mounted on the underwater robot 3. Wings (not shown) are mounted on both sides of the underwater robot 3. Cleaning brushes (not shown) are mounted on the wings. The camera 6 and propeller 5 are both electrically connected to the power storage control system. The propeller 5 is mounted on the outer wall of the underwater robot 3 via a mounting base 4.

[0045] With such an arrangement, the underwater robot 3 can move freely in the cage assembly driven by the propeller 5 to perform tasks such as inspection, monitoring water quality, and observing the growth of farmed organisms; the camera 6 is used to capture underwater images in real time and transmit the data to the battery control system for the convenience of remote monitoring by the farmer; the cleaning brush can clean the attachments on the net 20, keep the inside of the cage assembly clean, and be conducive to the growth of farmed organisms.

[0046] Further optimized solution, the floating plate assembly includes a first mounting ring 7, a second mounting ring 8 and a plurality of elliptical air bags 9; the first mounting ring 7 is fixedly mounted on the top of the outer wall of the cage assembly, and the second mounting ring 8 is arranged outside the first mounting ring 7; the plurality of elliptical air bags 9 are fixedly connected and communicated by cylindrical air bags 10, and the cylindrical air bags 10 are fixedly mounted between the first mounting ring 7 and the second mounting ring 8; the buffer assembly is fixedly mounted on the outer wall of the second mounting ring 8;

[0047] The elliptical airbag 9 and the cylindrical airbag 10 are used to provide the buoyancy required by the cage assembly. The elliptical airbag 9 enhances the stability of the device. The elliptical airbag 9 and the cylindrical airbag 10 are both made of elastic material, which can absorb and disperse the energy of external impact, thereby playing a shock-absorbing role, helping to protect the device, reduce damage from waves, and extend the service life of the device.

[0048] Further optimized, the buffer assembly includes a plurality of first rubber columns 11 and a plurality of second rubber columns 12, the plurality of first rubber columns 11 and the plurality of second rubber columns 12 are circumferentially evenly installed on the outer wall of the second mounting ring 8, the second rubber columns 12 are located directly below the first rubber columns 11, and the plurality of first rubber columns 11 and the plurality of second rubber columns 12 are arranged in a one-to-one correspondence;

[0049] A rubber connecting column 13 is fixedly installed between the first rubber column 11 and the second rubber column 12. A plurality of buffer through holes 14 are formed through the side walls of the first rubber column 11 and the second rubber column 12.

[0050] A support ring 15 is fixedly mounted on one end of the first rubber column 11 away from the second mounting ring 8 , the second rubber column 12 is fixedly connected to the support ring 15 , and a rotating ring 16 is rotatably connected to the outer wall of the support ring 15 ;

[0051] With this arrangement, the first rubber column 11 and the second rubber column 12 are connected by the rubber connecting column 13 to form an integral buffer structure. When wind and waves impact the aquaculture device, the first rubber column 11, the second rubber column 12, and the rubber connecting column 13 undergo elastic deformation, absorbing and dissipating the impact energy, protecting the aquaculture device from damage. The buffer through-hole 14 further enhances the buffering effect of the rubber column, allowing air and seawater to flow inside the buffer through-hole 14, thereby more effectively absorbing the impact energy.

[0052] To further optimize the solution, the guide plate assembly includes an inclined guide plate body 17, a plurality of energy dissipation grooves 18 are opened through the guide plate body 17, and the plurality of guide plate bodies 17 are installed on the outer wall of the rotating ring 16 at equal intervals in the circumferential direction; the inclined guide plate body 17 can guide the impact direction of wind and waves so that it acts on the rotating ring 16 and promotes its rotation, thereby effectively dispersing the impact force of wind and waves and reducing damage to the aquaculture device; the energy dissipation grooves 18 can further weaken the impact force of wind and waves and improve stability.

[0053] A further optimized solution is provided, in which the cage assembly includes a support frame 19 and a net 20. Several reinforcing ribs 21 are installed between the support frames 19, and the net 20 is detachably connected to the inner wall of the support frame 19. The counterweight assembly and the anchor assembly are both installed at the bottom of the support frame 19, the power storage control system is installed on the support frame 19, the wind turbine 1 and the photovoltaic power generation equipment 2 are both installed at the top of the support frame 19, the first mounting ring 7 is fixedly mounted on the top of the outer wall of the support frame 19, and the underwater robot 3 is located within the net 20.

[0054] The support frame 19 and the reinforcing ribs 21 constitute the main structure of the cage assembly, providing sufficient strength and stability to support the weight of the net 20 and the cultured organisms; the net 20 is connected to the support frame 19 by a detachable connection, which allows for easy replacement or cleaning of the net 20.

[0055] To further optimize the solution, the counterweight assembly includes a number of counterweight blocks 22, and the counterweight blocks 22 are fixedly installed on the bottom of the support frame 19 through connecting ropes 23; the counterweight blocks 22 are arranged at equal intervals; the counterweight blocks 22 are fixed to the bottom of the support frame 19 through connecting ropes 23, which provides the necessary stability and wind and wave resistance for the aquaculture device, and the counterweight blocks 22 arranged at equal intervals ensure the balance of the device in the water.

[0056] To further optimize the solution, the anchoring assembly includes a number of anchoring chains 24, which are installed at intervals on the bottom of the outer wall of the support frame 19, and a fixed anchor 25 is installed at one end of the anchoring chain 24 away from the support frame 19; the anchoring chain 24 and the fixed anchor 25 constitute a fixing system for the aquaculture device, and by embedding the fixed anchor 25 into the seabed or seabed rock, it is ensured that the aquaculture device will not drift or tip over in wind and waves, further improving the wind and wave resistance and improving the aquaculture stability.

[0057] To further optimize the solution, a T-shaped slider 26 is installed on the outer wall of the support ring 15, and a T-shaped groove 27 is opened on the inner wall of the rotating ring 16. The T-shaped slider 26 is slidingly connected to the T-shaped groove 27 to ensure stable rotation of the rotating ring 16 on the support ring 15.

[0058] To further optimize the solution, a water quality sensor component is installed on the inner wall of the support frame 19. The water quality sensor component includes a dissolved oxygen sensor, a pH sensor, a temperature sensor, and a salinity sensor. The dissolved oxygen sensor, pH sensor, temperature sensor, and salinity sensor are all electrically connected to the power storage control system for real-time monitoring of water quality parameters and transmitting data to the power storage control system.

[0059] To further optimize the solution, an aeration device and a pH agent dosing device are installed in the support frame 19. The aeration device and the agent dosing device are both electrically connected to the power storage control system. The power storage control system controls the opening and closing of the aeration device and the opening and closing of the pH agent dosing device according to the data of the water quality sensor, thereby automatically adjusting the dissolved oxygen content and pH value in the water body; the water quality parameters of the breeding environment are monitored in real time through the water quality sensor to ensure that the breeding organisms are in a suitable growth environment; the power storage control system automatically adjusts the water quality according to the monitoring data, reduces manual intervention, and improves breeding efficiency.

[0060] To further optimize the solution, a feed bin is installed on the top of the support frame 19 for storing the feed required by the farmed organisms; an automatic feeding device is installed at the bottom of the feed bin, including a conveying pipe and a feeding nozzle, for evenly delivering the feed into the cage assembly; combined with the camera 6 of the underwater robot 3, the feeding situation of the farmed organisms is observed in real time, and accurate feeding is achieved according to the growth stage and feeding needs of the farmed organisms, thereby avoiding feed waste and improving feed utilization.

[0061] To further optimize the solution, an acoustic wave driving device and an infrared monitoring device are installed on the outer wall of the support frame 19 cage assembly. Both the acoustic wave driving device and the infrared monitoring device are electrically connected to the power storage control system. The infrared monitoring device is used to monitor the surrounding environment in real time. When a potential threat is found, the acoustic wave driving device is activated. The acoustic wave driving device is used to drive away large marine organisms (such as fish, seabirds, etc.) that may prey on farmed organisms; the acoustic wave driving device and the infrared monitoring device can effectively prevent the invasion of predators and ensure the safety of farmed organisms.

[0062] To further optimize the solution, a high-pressure water gun is installed on the underwater robot 3 to clean stubborn attachments (such as algae, shellfish, etc.) on the net 20. The high-pressure water gun can quickly clean the net 20, keep the inside of the cage assembly clean, extend its service life, and reduce breeding costs.

[0063] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0064] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A marine aquaculture device, characterized in that: include: A net cage assembly, wherein a counterweight assembly and an anchor assembly are installed at the bottom of the net cage assembly; A floating plate assembly is mounted on the top of the outer wall of the cage assembly; a buffer assembly is mounted on the outer wall of the floating plate assembly; An anti-wave mechanism, comprising a rotating ring (16) and a plurality of guide plate assemblies; the rotating ring (16) is rotatably connected to the outer wall of the buffer assembly, and the plurality of guide plate assemblies are circumferentially spaced and installed on the outer wall of the rotating ring (16); an electricity storage control system, the electricity storage control system being mounted on the grid cage assembly; A power generation assembly, the power generation assembly comprising a wind power generation device (1) and a photovoltaic power generation device (2), the wind power generation device (1) and the photovoltaic power generation device (2) both being installed on the top of the cage assembly; Wherein, the wind power generation equipment (1) and the photovoltaic power generation equipment (2) are both electrically connected to the power storage control system.

2. The marine aquaculture device according to claim 1, characterized in that: An underwater robot (3) is provided in the cage assembly, a propeller (5) and a camera (6) are installed on the underwater robot (3), wing plates are installed on both sides of the underwater robot (3), cleaning brushes are installed on the wing plates, and the camera (6) and the propeller (5) are both electrically connected to the power storage control system.

3. The marine aquaculture device according to claim 2, characterized in that: The floating plate assembly comprises a first mounting ring (7), a second mounting ring (8) and a plurality of elliptical air bags (9); the first mounting ring (7) is fixedly sleeved on the top of the outer wall of the cage assembly, and the second mounting ring (8) is arranged on the outer side of the first mounting ring (7); the plurality of elliptical air bags (9) are fixedly connected and communicated through cylindrical air bags (10), and the cylindrical air bags (10) are fixedly mounted between the first mounting ring (7) and the second mounting ring (8); the buffer assembly is fixedly mounted on the outer wall of the second mounting ring (8).

4. The marine aquaculture device according to claim 3, characterized in that: The buffer assembly includes a plurality of first rubber columns (11) and a plurality of second rubber columns (12), the plurality of first rubber columns (11) and the plurality of second rubber columns (12) are all mounted on the outer wall of the second mounting ring (8) at equal intervals in the circumferential direction, the second rubber columns (12) are located directly below the first rubber columns (11), and the plurality of first rubber columns (11) and the plurality of second rubber columns (12) are arranged in a one-to-one correspondence; A rubber connecting column (13) is fixedly installed between the first rubber column (11) and the second rubber column (12), and a plurality of buffer through holes (14) are provided through the side walls of the first rubber column (11) and the second rubber column (12); A support ring (15) is fixedly mounted on one end of the first rubber column (11) away from the second mounting ring (8); the second rubber column (12) is fixedly connected to the support ring (15); and the rotating ring (16) is rotatably connected to the outer wall of the support ring (15).

5. The marine aquaculture device according to claim 1, characterized in that: The guide plate assembly comprises an inclined guide plate body (17), a plurality of energy dissipation slots (18) are provided through the guide plate body (17), and the plurality of guide plate bodies (17) are circumferentially and evenly spaced on the outer wall of the rotating ring (16).

6. The marine aquaculture device according to claim 3, characterized in that: The cage assembly comprises a support frame (19) and a net (20); a plurality of reinforcing ribs (21) are installed between the support frame (19); the net (20) is detachably connected to the inner wall of the support frame (19); the counterweight assembly and the anchor assembly are both installed at the bottom of the support frame (19); the power storage control system is installed on the support frame (19); the wind power generation equipment (1) and the photovoltaic power generation equipment (2) are both installed at the top of the support frame (19); the first mounting ring (7) is fixedly sleeved on the top of the outer wall of the support frame (19); and the underwater robot (3) is arranged in the net (20).

7. The marine aquaculture device according to claim 6, characterized in that: The counterweight assembly comprises a plurality of counterweight blocks (22), and the plurality of counterweight blocks (22) are fixedly mounted on the bottom of the support frame (19) via connecting ropes (23); the plurality of counterweight blocks (22) are arranged at equal intervals.

8. The marine aquaculture device according to claim 6, characterized in that: The anchoring assembly comprises a plurality of anchoring chains (24), which are installed at intervals on the bottom of the outer wall of the support frame (19), and a fixed anchor (25) is installed at one end of the anchoring chain (24) away from the support frame (19).

9. The marine aquaculture device according to claim 4, characterized in that: A T-shaped slider (26) is installed on the outer wall of the support ring (15), a T-shaped slot (27) is opened on the inner wall of the rotating ring (16), and the T-shaped slider (26) is slidably connected to the T-shaped slot (27).

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