A cage towing floating device and towing method thereof

Abstract

The present invention belongs to the technical field of towing and floating devices, and in particular, to a net cage towing and floating device and a towing method thereof. The net cage towing and floating device comprises a net cage, with multiple air bags evenly tied on both sides of the net cage, a tugboat is arranged on the front side of the net cage, a connecting assembly is arranged on the rear side of the tugboat, a cable is connected between the connecting assembly and the front side of the net cage, a slide rail is horizontally arranged on the top of the connecting assembly, two first sliders are slidably installed in the slide rail, and a driving assembly is connected between the tops of the two first sliders. The present invention is provided with a connecting assembly, and in the process of the tugboat dragging the net cage to move, when the net cage intermittently pulls the cable due to sea surface fluctuations, the towing rod can drive the fixing ring to move backward through the latch under the tension of the cable and squeeze the second shock-absorbing spring, thereby reducing the influence of sea surface fluctuations on the tugboat pulling the net cage.

Description

Technical Field

[0001] The invention belongs to the technical field of towing and floating devices, and in particular relates to a net cage towing and floating device and a towing method thereof. Background Art

[0002] Marine aquaculture cages are cages set up at sea for fish farming. Existing cages are mainly composed of metal frames, net bags, fixing systems and supporting facilities. After the cages are built, they need to be towed to the designated location by ships.

[0003] When using a ship to tow an existing cage, it is necessary to tie air bags on both sides of the cage to make it float on the sea, then tie a cable between the ship and the cage, and then use the ship to tow it to a designated location. However, during the towing process, the cage will shake due to the wind and waves on the sea. As the cage shakes, the cage can intermittently pull the ship through the cable, causing wear or damage to the connection between the ship and the cable;

[0004] In addition, after the cage is towed to the designated location, due to the lack of suitable fixing devices, when using cables to connect and fix the cage to the anchor pre-buried on the seabed, the shaking of the cage also increases the difficulty of connecting the cable.

[0005] Therefore, it is necessary to invent a cage towing floating device and a towing method thereof to solve the above problems. Summary of the invention

[0006] In view of the above problems, the present invention provides a cage towing and floating device and a towing method thereof to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A net cage towing and floating device comprises a net cage, wherein a plurality of air bags are evenly tied to both sides of the net cage, a tugboat is arranged at the front side of the net cage, a connecting assembly is arranged at the rear side of the tugboat, a cable is connected between the connecting assembly and the front side of the net cage, a slide rail is arranged horizontally at the top of the connecting assembly, two first sliders are slidably installed in the slide rail, a driving assembly is connected between the tops of the two first sliders, a fixing plate is fixedly connected to the rear side of the first slider horizontally and vertically, a slot is provided on the side where the two fixing plates are separated, and the front and rear sides of the slot are both open, and the two A card plate is horizontally arranged on the side away from the fixed plate, the side of the card plate away from the fixed plate is designed as an inclined surface, and the width of the card plate gradually narrows from front to back, the front side of the card plate is fixedly connected to a second slider, the second slider is slidably installed in the slide rail, the side of the card plate close to the fixed plate is slidably inserted into the slot, a plurality of telescopic rods are vertically fixedly connected between the side of the card plate close to the fixed plate and the slot, a first shock-absorbing spring is sleeved on the telescopic rod, and the two ends of the first shock-absorbing spring are respectively fixedly connected to the inner wall of the slot and the card plate, and a bayonet is provided on the side of the card plate away from the fixed plate.

[0009] Furthermore, the net box includes a plurality of vertical columns and two upper and lower frames, the plurality of columns are evenly fixedly connected to the edges and corners of the two frames, and the diameter of the columns is smaller than the opening width of the bayonet, and a plurality of cross-shaped reinforcing rods are fixedly connected between the edges of the two frames, and the reinforcing rods are located between two adjacent columns.

[0010] Furthermore, the connecting assembly includes a horizontally arranged sleeve, and the upper middle part of the sleeve is designed to be open, the front end of the sleeve and the rear end of the tugboat are connected together by a Hook hinge, the rear end of the sleeve is slidably inserted into the towing rod, the rear end of the towing rod is connected to a towing ring, the part of the towing rod located in the sleeve is sleeved with a second shock-absorbing spring and a fixing ring, and the fixing ring is located at the front end of the second shock-absorbing spring, and a locking assembly is inserted through the top of the fixing ring.

[0011] Furthermore, the locking assembly includes a pin, which is inserted into the fixing ring and the towing rod in sequence from top to bottom, and the bottom end of the pin is flush with the bottom surface of the fixing ring, the bottom end of the pin is vertically fixedly connected with a locking screw, a strip-shaped limiting hole is penetrated at a position opposite to the locking screw at the bottom of the sleeve, and the length direction of the limiting hole is parallel to the length direction of the sleeve, the locking screw is inserted into the limiting hole, and the part of the locking screw outside the sleeve is threaded with a nut, and the diameter of the nut is larger than the width of the limiting hole.

[0012] Furthermore, the driving assembly includes a horizontally arranged driving screw, and one end of the driving screw is transmission-connected to a driving motor, two movable blocks are symmetrically threadedly sleeved on the driving screw, and the threads of the driving screw and the two movable blocks are oppositely designed relative to each other, and fixed blocks are rotatably sleeved near the two ends of the driving screw, and the fixed block is fixedly connected to the top of the slide rail, and a strip hole is penetrated through the area of ​​the top of the slide rail facing the two movable blocks, and two connecting blocks are inserted through the strip hole, and the bottoms of the two connecting blocks are respectively fixedly connected to the two first sliding blocks, and the tops of the two connecting blocks are respectively fixedly connected to the bottoms of the two movable blocks.

[0013] Furthermore, the top end of the nut is rotatably connected to an arc-shaped pressing plate, and the pressing plate is rotatably sleeved on the locking screw, and the top surface of the pressing plate is in contact with the bottom surface of the sleeve.

[0014] Furthermore, a locking pin is inserted horizontally through the locking screw near the bottom end, and the locking pin is located at the bottom of the nut.

[0015] Furthermore, a roller is rotatably connected between the front and rear inner walls of the bayonet, and the middle portion of the roller is concave inwardly to form a smooth arc surface.

[0016] Furthermore, rubber pads are provided on the inclined surface of the card plate and the front and rear inner walls of the card slot, and the width of the rubber pads matches the thickness of the card plate.

[0017] The present invention also provides a towing method of a cage towing floating device, comprising the following steps:

[0018] Step 1: Before dragging the cage into the sea, lay several cylindrical air bags in parallel on the ground near the sea, and make the direction of the air bags parallel to the front direction of the cage, and the laying length of the air bags is greater than the length of the cage. Then use the lifting equipment to lift the cage onto the laid air bags, and then tie several air bags symmetrically on both sides of the cage, and ensure that the sum of the buoyancy generated by the tied air bags is greater than the weight of the cage;

[0019] Step 2: After the airbags are tied, use a forklift to push the cage into the sea. During the process of pushing the cage into the sea, the airbags laid on the ground can act as rollers;

[0020] Step 3: After the cage is pushed into the sea, it can float on the sea surface under the buoyancy generated by the airbag, and then the cable is used to connect the cage to the connecting component of the tugboat;

[0021] Step 4: Start the tugboat to tow the cage floating on the sea to the designated location;

[0022] Step 5: After the cage arrives at the designated location, the tugboat is moved toward the cage, and the two columns on the front side of the cage are connected and locked through the bayonet holes on the two clamping plates, thereby realizing a direct connection between the cage and the tugboat, and then the cage can be stably operated by the tugboat to prevent the cage from swinging due to sea fluctuations;

[0023] Step 6: Use cables to connect the cage to the anchor pre-buried on the seabed, so as to achieve fixed-point operation of the cage. After the connection is completed, the connection between the card plate and the cage is released through the driving component and the cable between the connecting component and the cage is untied.

[0024] Technical effects and advantages of the present invention:

[0025] 1. The present invention is provided with a connecting assembly. When the cage is towed by the tugboat and the cage intermittently pulls the cable due to sea surface fluctuations, the towing rod can drive the fixing ring to move backward through the latch under the tension of the cable and squeeze the second damping spring, thereby converting the intermittent pulling force of the cable on the tugboat into the elastic potential energy of the second damping spring, thereby reducing the influence of sea surface fluctuations on the tugboat pulling the cage;

[0026] 2. The present invention is provided with a pallet. When the net cage is towed to a designated position, the distance between the two pallets can be adjusted by a driving assembly, so that when the tugboat approaches the net cage, the net cage can be connected to the tugboat as a whole through the cooperation of the column and the pallet. Then, the tugboat can be controlled to directly adjust the position of the net cage, thereby improving the convenience of controlling the net cage. At the same time, since the tugboat is connected to the net cage, the overall stability of the tugboat and the net cage is also improved, and it is more convenient to connect the net cage to the anchor pre-buried on the seabed through a cable later;

[0027] 3. The present invention is provided with a roller. When the column is inserted into the bayonet, the clamping plate can be tightly attached to the column under the thrust of the first shock-absorbing spring. When the net cage shakes to both sides due to sea surface fluctuations, the column can drive the roller to rotate through friction, thereby converting the sliding friction between the column and the inner wall of the bayonet into rolling friction between the column and the roller, avoiding the generation of large noise due to the mutual friction between the column and the bayonet, and also having a certain protective effect on the column and the bayonet. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the overall structure of the tugboat in the present invention;

[0030] Figure 3 is a three-dimensional schematic diagram of a connection assembly in the present invention;

[0031] Figure 4 It is a three-dimensional schematic diagram of the structures of the towing rod, the towing ring, the first shock absorbing spring and the sleeve in the present invention;

[0032] Figure 5 is a three-dimensional cross-sectional view of the sleeve and the towing rod in the present invention;

[0033] Figure 6 It is a three-dimensional schematic diagram of the structures such as the driving assembly, the clamping plate and the fixing plate in the present invention;

[0034] Figure 7 It is a three-dimensional cross-sectional view of the fixing plate in the present invention.

[0035] In the figure: 1. net box; 101. column; 102. frame; 103. reinforcement rod; 2. air bag; 3. tugboat; 4. cable; 5. slide rail; 6. first slider; 7. fixed plate; 8. clamping plate; 9. second slider; 10. telescopic rod; 11. first shock-absorbing spring; 12. bayonet; 13. sleeve; 14. Hook hinge; 15. tow rod; 16. tow ring; 17. second shock-absorbing spring; 18. fixing ring; 19. latch; 20. locking screw; 21. nut; 22. drive screw; 23. drive motor; 24. movable block; 25. fixed block; 26. connecting block; 27. pressure plate; 28. locking pin; 29. ​​roller; 30. rubber pad. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0037] The present invention provides Figures 1 to 7A net cage towing and floating device shown in the figure comprises a net cage 1, wherein the net cage 1 comprises a plurality of vertical columns 101 and two upper and lower frames 102, wherein the plurality of columns 101 are evenly fixedly connected to the edges and corners of the two frames 102, and the diameter of the columns 101 is smaller than the opening width of the bayonet 12, a plurality of cross-shaped reinforcing rods 103 are fixedly connected between the edges of the two frames 102, and the reinforcing rods 103 are located between two adjacent columns 101, a plurality of air bags 2 are evenly tied to both sides of the net cage 1, a tugboat 3 is arranged on the front side of the net cage 1, a connecting assembly is arranged on the rear side of the tugboat 3, a cable 4 is connected between the connecting assembly and the front side of the net cage 1, a slide rail 5 is horizontally arranged on the top of the connecting assembly, two first sliders 6 are slidably installed in the slide rail 5, and a driving assembly is connected between the tops of the two first sliders 6. Parts, the rear side of the first slider 6 is horizontally and vertically fixedly connected with a fixing plate 7, a slot is provided on one side of the two fixing plates 7, and the front and rear sides of the slot are both open, a card plate 8 is horizontally arranged on one side of the two fixing plates 7, the side of the card plate 8 away from the fixing plate 7 is designed as an inclined surface, and the width of the card plate 8 gradually narrows from front to back, a second slider 9 is fixedly connected to the front side of the card plate 8, the second slider 9 is slidably installed in the slide rail 5, the side of the card plate 8 close to the fixing plate 7 is slidably inserted in the slot, a plurality of telescopic rods 10 are vertically fixedly connected between the side of the card plate 8 close to the fixing plate 7 and the slot, a first shock-absorbing spring 11 is sleeved on the telescopic rod 10, and the two ends of the first shock-absorbing spring 11 are respectively fixedly connected to the inner wall of the slot and the card plate 8, and a bayonet 12 is provided on the side of the card plate 8 away from the fixing plate 7;

[0038] The driving assembly includes a horizontally arranged driving screw 22, and one end of the driving screw 22 is drivingly connected to a driving motor 23, two movable blocks 24 are symmetrically threadedly sleeved on the driving screw 22, and the threads of the driving screw 22 and the two movable blocks 24 are of opposite design relative to each other, and the positions of the driving screw 22 near both ends are rotatably sleeved with fixed blocks 25, and the fixed blocks 25 are fixedly connected to the top of the slide rail 5, and a strip hole is opened through the top of the slide rail 5 and the area opposite to the two movable blocks 24, and two connecting blocks 26 are inserted through the strip hole, and the bottoms of the two connecting blocks 26 are respectively fixedly connected to the two first sliding blocks 6, and the tops of the two connecting blocks 26 are respectively fixedly connected to the bottoms of the two movable blocks 24;

[0039] When the net box 1 tied with the air bag 2 enters the sea under the push of the forklift, the net box 1 can float on the sea surface under the action of the buoyancy of the air bag 2, and then the tugboat 3 is connected to the net box 1 through the cable 4. When the cable 4 is connected, as the tugboat 3 moves forward, the net box 1 can move to the designated area under the pull of the tugboat 3. When the tugboat 3 moves to the designated position, since there is no direct connection between the net box 1 and the tugboat 3, the net box 1 will continue to float forward for a distance under the action of inertia. When the net box 1 reaches the designated position, since there is no direct connection between the tugboat 3 and the net box 1, when it is necessary to adjust the position of the net box 1, it is difficult to operate the tugboat 3 to control the net box 1, especially when there are wind and waves on the sea, it is not convenient to fix the net box 1.

[0040] At this time, by providing the card plate 8, when the net cage 1 is towed to the specified position, the drive motor 23 can be started to adjust the distance between the two movable blocks 24 by driving the screw rod 22, and as the movable block 24 moves, the movable block 24 can drive the first slider 6 and the fixed plate 7 to move through the connecting block 26, and as the fixed plate 7 moves, the two card plates 8 can also be driven by the telescopic rod 10 and the first shock-absorbing spring 11 to move, thereby realizing the adjustment of the distance between the two card plates 8. When the distance between the opposite sides of the two bayonet ports 12 is equal to the distance between the two columns 101 on the front side of the net cage 1, the drive motor 23 is turned off, and then the tugboat 3 is controlled to make its tail close to the net cage 1. When the two card plates 8 When the inclined surface of the clamping plate 8 contacts the two upright posts 101 on the front side of the net box 1, the two clamping plates 8 can move toward each other under the pressure of the two upright posts 101. During this process, the telescopic rod 10 and the first shock-absorbing spring 11 are gradually compressed, and the upright posts 101 gradually approach the bayonet 12. When the two upright posts 101 are respectively opposite to the two bayonet 12, the two clamping plates 8 can move in the direction of separation under the thrust of the first shock-absorbing spring 11, so that the upright posts 101 are clamped through the bayonet 12 on the clamping plate 8, and then the direct connection between the tugboat 3 and the net box 1 is realized through the connection between the clamping plate 8 and the upright posts 101. At this time, the tugboat 3 can be controlled to directly adjust the position of the net box 1, thereby improving the convenience of controlling the net box 1.

[0041] At the same time, since the tugboat 3 is connected to the cage 1, the overall stability of the tugboat 3 and the cage 1 is improved, and it is also more convenient to connect the cage 1 to the anchor pre-buried on the seabed through the cable 4 later;

[0042] When the net box 1 is connected to the anchor, the cable 4 between the connecting assembly and the net box 1 is first untied, and then the driving motor 23 is started to drive the two movable blocks 24 to move towards each other through the driving screw 22. As the movable blocks 24 move, the two clamping plates 8 can also move downward relative to each other, so that the column 101 can fall off from the clamping port 12, and finally the tugboat 3 can be controlled to leave the net box 1.

[0043] like Figures 2 to 5 As shown, the connecting assembly includes a sleeve 13 arranged horizontally, and the upper half of the middle of the sleeve 13 is designed to be open. The front end of the sleeve 13 is connected to the rear end of the tugboat 3 through a Hook hinge 14. The rear end of the sleeve 13 is slidably plugged into a towing rod 15, and the rear end of the towing rod 15 is connected to a towing ring 16. The part of the towing rod 15 located in the sleeve 13 is sleeved with a second shock-absorbing spring 17 and a fixing ring 18, and the fixing ring 18 is located at the front end of the second shock-absorbing spring 17. The top of the fixing ring 18 is penetrated and plugged with a locking assembly, and the locking assembly includes a latch 1 9, the latch 19 is inserted through the fixing ring 18 and the drag rod 15 in sequence from top to bottom, and the bottom end of the latch 19 is flush with the bottom surface of the fixing ring 18, and the bottom end of the latch 19 is vertically fixedly connected with a locking screw 20, and a strip-shaped limiting hole is penetrated at the position of the bottom of the sleeve 13 directly opposite to the locking screw 20, and the length direction of the limiting hole is parallel to the length direction of the sleeve 13, and the locking screw 20 is inserted through the limiting hole, and the part of the locking screw 20 located outside the sleeve 13 is threadedly sleeved with a nut 21, and the diameter of the nut 21 is greater than the width of the limiting hole;

[0044] By providing the connection assembly, before the tugboat 3 drags the net cage 1 through the cable 4, the second damping spring 17 and the fixing ring 18 can be attached according to the instructions. Figure 5 The method is as follows: insert the sleeve 13 from the opening of the upper part of the sleeve 13 into the sleeve 13, then insert the towing rod 15 into the sleeve 13 from the rear end of the sleeve 13 and insert it into the inner side of the second shock absorbing spring 17 and the fixing ring 18 in sequence, then insert the latch 19 through the fixing ring 18 and the towing rod 15 from top to bottom in sequence, and make the locking screw 20 pass through the limiting hole, and finally screw the nut 21 onto the locking screw 20, so as to lock the latch 19;

[0045] When the tugboat 3 is used to tow the net cage 1, the cable 4 is tied between the towing ring 16 and the front side of the net cage 1. When the tugboat 3 is towing the net cage 1, when the net cage 1 intermittently pulls the cable 4 due to the fluctuation of the sea surface, the towing rod 15 can drive the fixing ring 18 to move backward through the latch 19 under the pulling force of the cable 4 and squeeze the second shock-absorbing spring 17, thereby converting the intermittent pulling force of the cable 4 on the tugboat 3 into the elastic potential energy of the second shock-absorbing spring 17, thereby reducing the influence of the sea surface fluctuation on the tugboat 3 pulling the net cage 1;

[0046] In addition, since the casing 13 is connected to the tugboat 3 through the Hook hinge 14, when the cage 1 is tilted from the forward direction of the tugboat 3 under the action of sea breeze or waves, the Hook hinge 14 can also meet the deflection requirements of the tugboat 3 on the cage 1 in any direction;

[0047] In addition, since the second shock absorbing spring 17 can be disassembled relatively conveniently, when the second shock absorbing spring 17 is damaged during the long-term operation of the tugboat 3, the second shock absorbing spring 17 can also be conveniently replaced.

[0048] like Figure 4 and Figure 5 As shown, the top of the nut 21 is rotatably connected to an arc-shaped pressing plate 27, and the pressing plate 27 is rotatably sleeved on the locking screw 20, and the top surface of the pressing plate 27 is in contact with the bottom surface of the sleeve 13;

[0049] By providing a pressure plate 27, when the nut 21 is screwed onto the locking screw 20, the pressure plate 27 can fit with the bottom of the sleeve 13, thereby increasing the contact area between the nut 21 and the sleeve 13, and thus allowing the nut 21 to lock the pin 19 more stably.

[0050] like Figure 4 and Figure 5 As shown, a locking pin 28 is inserted horizontally through the locking screw 20 near the bottom end, and the locking pin 28 is located at the bottom of the nut 21;

[0051] By providing the locking pin 28, when the nut 21 and the locking screw 20 are screwed together, the locking pin 28 can be inserted into the locking screw 20, thereby restricting the nut 21 and preventing the nut 21 from accidentally falling off the locking screw 20 due to vibration.

[0052] like Figure 6 and Figure 7 As shown, a roller 29 is rotatably connected between the front and rear inner walls of the bayonet 12, and the middle of the roller 29 is concave inwardly to form a smooth arc surface;

[0053] By providing the roller 29, when the column 101 is inserted into the bayonet 12, the clamping plate 8 can be tightly attached to the column 101 under the thrust of the first shock-absorbing spring 11. When the net cage 1 shakes to both sides due to sea surface fluctuations, the column 101 can drive the roller 29 to rotate through friction, thereby converting the sliding friction between the column 101 and the inner wall of the bayonet 12 into a rolling friction between the column 101 and the roller 29, avoiding the generation of loud noise due to the mutual friction between the column 101 and the bayonet 12, and also providing a certain protective effect on the column 101 and the bayonet 12.

[0054] like Figure 2 , Figure 6 and Figure 7 As shown, rubber pads 30 are provided on the inclined surface of the card plate 8 and the front and rear inner walls of the card slot 12, and the width of the rubber pads 30 matches the thickness of the card plate 8;

[0055] By providing the rubber pad 30 , when the inclined surface of the cardboard 8 and the card opening 12 contact the column 101 of the net box 1 , the rubber pad 30 can reduce the collision force of the column 101 on the cardboard 8 , thereby protecting the cardboard 8 .

[0056] The present invention also provides a towing method of a cage towing floating device, comprising the following steps:

[0057] Step 1: Before dragging the net cage 1 into the sea, first lay a number of cylindrical air bags 2 in parallel on the ground near the sea, and make the direction of the air bags 2 parallel to the front direction of the net cage 1, and the laying length of the air bags 2 is greater than the length of the net cage 1. Then use a lifting device to lift the net cage 1 onto the laid air bags 2, and then symmetrically tie a number of air bags 2 on both sides of the net cage 1, and ensure that the sum of the buoyancy generated by the tied air bags 2 is greater than the gravity of the net cage 1;

[0058] Step 2: After the airbags 2 are tied, use a forklift to push the net cage 1 into the sea. During the process of the net cage 1 being pushed into the sea, the airbags 2 laid on the ground can act as rollers;

[0059] Step 3: After the net cage 1 is pushed into the sea, the net cage 1 can float on the sea surface under the buoyancy generated by the airbag 2, and then the cable 4 is used to connect the net cage 1 to the connecting component of the tugboat 3;

[0060] Step 4: Start the tugboat 3 to tow the cage 1 floating on the sea to a designated location;

[0061] Step 5: After the net cage 1 reaches the designated position, the tugboat 3 is moved toward the net cage 1, and the two upright posts 101 on the front side of the net cage 1 are connected and locked through the bayonet 12 on the two clamping plates 8, so as to realize the direct connection between the net cage 1 and the tugboat 3, and then the net cage 1 can be stably operated by the tugboat 3 to prevent the net cage 1 from swinging due to the fluctuation of the sea surface;

[0062] Step six: Use the cable 4 to connect the cage 1 to the anchor pre-buried on the seabed, so as to achieve fixed-point operation of the cage 1. After the connection is completed, the connection between the clamping plate 8 and the cage 1 is released by the driving component and the cable 4 between the connecting component and the cage 1 is untied.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A net cage towing and floating device, comprising a net cage (1), characterized in that: A plurality of air bags (2) are evenly tied to both sides of the net box (1); a tugboat (3) is arranged on the front side of the net box (1); a connecting assembly is arranged on the rear side of the tugboat (3); a cable (4) is connected between the connecting assembly and the front side of the net box (1); a slide rail (5) is arranged horizontally on the top of the connecting assembly; two first sliders (6) are slidably mounted in the slide rail (5); a driving assembly is connected between the tops of the two first sliders (6); a fixing plate (7) is fixedly connected horizontally and vertically to the rear side of the first slider (6); a slot is provided on the separated side of the two fixing plates (7); and the front and rear sides of the slot are both designed to be open; a clamping plate (7) is arranged horizontally on the separated side of the two fixing plates (7). 8), the side of the card plate (8) away from the fixed plate (7) is designed as an inclined surface, and the width of the card plate (8) gradually narrows from front to back, the front side of the card plate (8) is fixedly connected to a second slider (9), the second slider (9) is slidably installed in the slide rail (5), the side of the card plate (8) close to the fixed plate (7) is slidably inserted into the slot, a plurality of telescopic rods (10) are vertically fixedly connected between the side of the card plate (8) close to the fixed plate (7) and the slot, the telescopic rods (10) are sleeved with a first shock absorbing spring (11), and the two ends of the first shock absorbing spring (11) are respectively fixedly connected to the inner wall of the slot and the card plate (8), and a bayonet (12) is provided on the side of the card plate (8) away from the fixed plate (7); The net box (1) comprises a plurality of vertical columns (101) and two upper and lower frames (102); the plurality of columns (101) are evenly fixedly connected to the edges and corners of the two frames (102); and the diameter of the columns (101) is smaller than the opening width of the bayonet (12); The connection assembly comprises a sleeve (13) arranged horizontally, and the upper middle part of the sleeve (13) is designed to be open, the front end of the sleeve (13) and the rear end of the tugboat (3) are connected together via a Hook hinge (14), the rear end of the sleeve (13) is slidably plugged into a towing rod (15), the rear end of the towing rod (15) is connected to a towing ring (16), the part of the towing rod (15) located in the sleeve (13) is sleeved with a second damping spring (17) and a fixing ring (18), the fixing ring (18) is located at the front end of the second damping spring (17), and the top of the fixing ring (18) is penetrated and plugged with a locking assembly.

2. The net cage towing and floating device according to claim 1, characterized in that: A plurality of cross-shaped reinforcing rods (103) are fixedly connected between the edges of the two frames (102), and the reinforcing rods (103) are located between two adjacent columns (101).

3. The net cage towing and floating device according to claim 2, characterized in that: The locking assembly comprises a latch (19), the latch (19) being inserted through the fixing ring (18) and the drag rod (15) in sequence from top to bottom, and the bottom end of the latch (19) is flush with the bottom surface of the fixing ring (18), the bottom end of the latch (19) is vertically fixedly connected with a locking screw (20), a strip-shaped limiting hole is penetrated through the bottom of the sleeve (13) at a position directly opposite to the locking screw (20), and the length direction of the limiting hole is parallel to the length direction of the sleeve (13), the locking screw (20) is inserted through the limiting hole, and a nut (21) is threadedly sleeved on a portion of the locking screw (20) outside the sleeve (13), and the diameter of the nut (21) is greater than the width of the limiting hole.

4. The net cage towing and floating device according to claim 3, characterized in that: The driving assembly comprises a horizontally arranged driving screw (22), one end of which is drivingly connected to a driving motor (23), two movable blocks (24) are symmetrically threadedly sleeved on the driving screw (22), and the threads of the driving screw (22) and the two movable blocks (24) are designed in opposite directions relative to each other, fixed blocks (25) are rotatably sleeved at positions near both ends of the driving screw (22), the fixed blocks (25) are fixedly connected to the top of the slide rail (5), a strip hole is penetrated through the area of ​​the top of the slide rail (5) facing the two movable blocks (24), two connecting blocks (26) are inserted through the strip hole, the bottoms of the two connecting blocks (26) are respectively fixedly connected to the two second sliding blocks (9), and the tops of the two connecting blocks (26) are respectively fixedly connected to the bottoms of the two movable blocks (24).

5. The net cage towing and floating device according to claim 4, characterized in that: The top end of the nut (21) is rotatably connected to an arc-shaped pressing plate (27), and the pressing plate (27) is rotatably sleeved on the locking screw (20), and the top surface of the pressing plate (27) is in contact with the bottom surface of the sleeve (13).

6. The net cage towing and floating device according to claim 5, characterized in that: A locking pin (28) is inserted and penetrated horizontally at a position near the bottom end of the locking screw (20), and the locking pin (28) is located at the bottom of the nut (21).

7. The net cage towing and floating device according to claim 6, characterized in that: A roller (29) is rotatably connected between the front and rear inner walls of the bayonet (12), and the middle portion of the roller (29) is concave inwardly to form a smooth arc surface.

8. The net cage towing and floating device according to claim 7, characterized in that: Rubber pads (30) are provided on the inclined surface of the clamping plate (8) and the front and rear inner walls of the clamping opening (12), and the width of the rubber pads (30) matches the thickness of the clamping plate (8).

9. A towing method using the cage towing floating device according to claim 8, characterized in that: The following steps are involved: Step 1: Before dragging the net cage (1) into the sea, first lay a number of cylindrical air bags (2) in parallel on the ground near the sea, and make the direction of the air bags (2) parallel to the front direction of the net cage (1), and the laying length of the air bags (2) is greater than the length of the net cage (1), then use a lifting device to lift the net cage (1) onto the laid air bags (2), and then symmetrically tie a number of air bags (2) on both sides of the net cage (1), and ensure that the sum of the buoyancy generated by the tied air bags (2) is greater than the weight of the net cage (1); Step 2: After the airbag (2) is tied, use a forklift to push the net cage (1) into the sea. During the process of pushing the net cage (1) into the sea, the airbag (2) laid on the ground can act as a roller; Step 3: After the net cage (1) is pushed into the sea, the net cage (1) can float on the sea surface under the buoyancy generated by the air bag (2), and then the net cage (1) is connected to the connecting component of the tugboat (3) using a cable (4); Step 4: Start the tugboat (3) to tow the cage (1) floating on the sea to a designated location; Step 5: After the net cage (1) reaches the designated position, the tugboat (3) is moved towards the net cage (1), and the two upright posts (101) on the front side of the net cage (1) are connected and locked through the bayonet holes (12) on the two clamping plates (8), thereby achieving a direct connection between the net cage (1) and the tugboat (3), and then the net cage (1) can be stably operated by the tugboat (3), thereby preventing the net cage (1) from swinging due to sea surface fluctuations; Step 6: Use the cable (4) to connect the cage (1) to the anchor pre-buried on the seabed, so as to achieve fixed-point operation of the cage (1). After the connection is completed, the connection between the clamping plate (8) and the cage (1) is released by the driving component and the cable (4) between the connecting component and the cage (1) is untied.

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