Cage culture catching device

Abstract

The utility model relates to the technical field of culture net cages, in particular to a net cage culture catching device which comprises a net cage body and a netting fixedly connected with the periphery of the net cage body, the top of the net cage body is connected with an external lifting device through a lifting rope, and a plurality of layers of screening pieces are arranged in the net cage body. The screening part is used for performing classified screening on fishes; wherein the screening part comprises a supporting frame and a grading grid plate, the supporting frame is fixed to the net cage body through an inserting assembly, the supporting frame is detachably connected with the grading grid plate, and when an inserting rod is pulled to unlock the supporting frame, the inserting rod can be fixed to a bent part through rotation to avoid resetting of the inserting rod; the fixing efficiency of the supporting frame is improved, the grading grid plates can be fixed through the check blocks and the limiting rods, the grading grid plates of different specifications can be replaced in the supporting frame, and then fishes of different sizes can be screened.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture cage technology, and in particular to a cage aquaculture harvesting device. Background Technology

[0002] Cage aquaculture is a fish farming method conducted in waterways. Its overall structure includes a frame, netting, floats, sinkers, and cables. The frame can be made of metal, wood, or bamboo, and its design must consider resistance to wind and waves. The netting includes the net skirt, net bottom, net cover, and feeding channels, and its design comes in various forms, such as square, octagonal, and hexagonal.

[0003] Fish farming cages are used to raise fish, and once the fish reach a certain size, they need to be harvested. For example, Chinese Patent Publication No. CN215736485U discloses a grading and harvesting basket for farmed fish, including a basket body with a frame. The top of the frame is equipped with hooks or hanging rings, and a net is installed on the side walls of the frame. It also includes at least two layers of grading grids arranged from top to bottom, with the spacing between the upper grading grids being greater than that between the lower grading grids. Each grading grid includes a left grid and a right grid, with the left end of the left grid hinged to the frame and the right end of the right grid hinged to the frame. The right end of the left grid and the left end of the right grid are detachably connected by a pin. Both the left and right grids include at least two dividing areas with different grid spacing directions. With multiple grading grids, smaller fish can pass through the grading grids due to differences in body width, while larger fish remain in the current layer, achieving a grading effect based on fish size within a certain range.

[0004] In practice, the grading grids on both sides of the same layer are fixedly connected by pins. However, this method of fixing with pins is not convenient for quick fixing and unlocking of the grading grids on both sides, which can easily affect the efficiency of fish harvesting. After the pins are fixed, they still need to be fixed with ropes, rubber rings, etc., which is cumbersome and inconvenient for replacement and maintenance after long-term use. Furthermore, the rectangular frame and the grading grids cannot be disassembled and replaced, which means that the grading grids can only sort fish of a fixed size and cannot be replaced with grids of different sizes, resulting in poor flexibility. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of the existing technology, such as the inability to quickly fix and unlock the grading grids on both sides, and the inability to disassemble and replace the rectangular frame and the grading grids, and to propose a net cage aquaculture harvesting device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a cage aquaculture harvesting device, including a cage body and a net fixedly connected to its periphery. The top of the cage body is connected to an external lifting device by a suspension rope. Several layers of screening components are set inside the cage body for grading and screening fish.

[0008] The screening component includes a support frame and a grading grid. The support frame is fixed to the main body of the cage via a plug-in assembly, and the support frame and the grading grid are detachably connected.

[0009] Furthermore, the main body of the cage is rectangular in shape and is enclosed on all four sides with both ends connected. The support frame is rotatably connected to the middle and bottom layers of the main body of the cage. The bottom of the support frame extends inward to form an extension, and the graded grid plate is placed on the extension.

[0010] Furthermore, the plug-in assembly includes a bracket, and at least one of the brackets is fixedly connected to the top of one end of the support frame away from the rotating end. The bracket has a U-shaped structure and a plug rod is slidably connected to its top. One end of the plug rod is plugged into the main body of the cage.

[0011] Furthermore, one end of the insertion rod is fixedly connected to a stop rod, and a first spring is sleeved around it. The two ends of the first spring abut against the stop rod and the bracket respectively. The bracket has a bent portion on its end face, and a slot is provided at the other end of the bent portion. The stop rod abuts against the bracket, and the stop rod can also engage with the slot.

[0012] Furthermore, limit rods are provided on both sides of the inner wall of the support frame, and limit grooves are provided on both sides of the graded grid plate, with the limit grooves slidably connected to the limit rods.

[0013] Furthermore, a groove is provided at one end of the support frame, and a stop block is movably inserted into the groove by a second spring, the stop block abutting against the top of the other side of the graded grid plate.

[0014] The present invention provides a cage aquaculture harvesting device with the following advantages: The device uses a plug-in assembly to fix the support frame and the cage body together, and employs several layers of grading grates to grade and screen fish of different sizes. When the plug is pulled to unlock the support frame, rotation can fix the plug at the bend to prevent it from resetting, thus improving the efficiency of fixing the support frame next time. Furthermore, the grading grates can be fixed by blocks and limit rods. The detachable connection allows for the replacement of different grading grates within the support frame, enabling the screening of fish of different sizes. The device is simple to operate and highly practical. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the sieve component of this utility model;

[0017] Figure 3 for Figure 2 A magnified structural diagram of area A;

[0018] Figure 4 This is an enlarged cross-sectional view of the limiting rod and limiting groove of this utility model;

[0019] Figure 5 This is an enlarged cross-sectional view of the stop block of this utility model.

[0020] In the diagram: 1. Main body of the cage; 11. Netting; 12. Suspension rope; 2. Screening component; 21. Support frame; 22. Grading grid; 23. Extension section; 24. Limiting rod; 25. Limiting groove; 26. Slide groove; 27. Second spring; 28. Stop block; 3. Plug-in assembly; 31. Bracket; 32. Insert rod; 33. Abutment rod; 34. First spring; 35. Bending section; 351. Slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-5 A net cage aquaculture harvesting device includes a net cage body 1 and a net 11 fixedly connected to its periphery. The top of the net cage body 1 is connected to an external lifting device via a suspension rope 12. Several layers of screening components 2 are arranged inside the net cage body 1, and the screening components 2 are used to grade and screen fish.

[0023] The screening component 2 includes a support frame 21 and a grading grid 22. The support frame 21 is fixed to the main body 1 of the cage via a plug-in assembly 3, and the support frame 21 and the grading grid 22 are detachably connected.

[0024] It should be added that the lifting device is mostly a crane installed on the fishing boat. The crane pulls the lifting rope 12 by retracting the hook, thereby lifting the main body 1 of the net cage. The graded grid plate 22 is a grid plate. The grid diameter of each layer of graded grid plate 22 is different, and the grid diameter gradually decreases from top to bottom.

[0025] Furthermore, the main body 1 of the cage has a rectangular structure, and its four sides are enclosed and the two ends are connected. The middle and bottom parts of the cage body 1 are rotatably connected to the support frame 21. The bottom of the support frame 21 extends inward to form an extension 23, and the graded grid plate 22 is placed on the extension 23.

[0026] Furthermore, the plug-in assembly 3 includes a bracket 31. At least one bracket 31 is fixedly connected to the top of the end of the support frame 21 away from the rotating end. The bracket 31 has a U-shaped structure and a plug rod 32 is slidably connected to its top. One end of the plug rod 32 is plugged into the main body 1 of the cage.

[0027] More specifically, one end of the insertion rod 32 is fixedly connected to a stop rod 33, and a first spring 34 is sleeved around it. The two ends of the first spring 34 respectively abut against the stop rod 33 and the bracket 31. The end face of the bracket 31 is provided with a bent portion 35, and the other end of the bent portion 35 is provided with a slot 351. The stop rod 33 abuts against the bracket 31, and the stop rod 33 can also be engaged with the slot 351.

[0028] It is worth mentioning that the insertion rod 32 has an L-shaped structure, that is, the end away from the insertion end is bent. Under normal circumstances, the first spring 34 provides elastic support for the insertion rod 32, and then the insertion rod 32 is inserted into the main body 1 of the cage to fix the support frame 21.

[0029] Next, pull the plug rod 32 to detach it from the main body 1 of the net cage and unlock the support frame 21. It should be noted that when the plug rod 32 moves, the abutment rod 33 and the bending part 35 do not contact each other. After the plug rod 32 is detached from the main body 1 of the net cage, rotate the plug rod 32 through the bending part so that the end of the abutment rod 33 engages with the slot 351 to prevent the plug rod 32 from resetting and to facilitate the next fixation of the support frame 21.

[0030] Normally, the plug-in component 3 is located at the bottom of the support frame 21, which makes it easy to rotate the support frame 21 layer by layer from bottom to top to clean up the captured fish.

[0031] In general, the inner walls of the support frame 21 are provided with limit rods 24 on both sides, and the graded grid plate 22 is provided with limit grooves 25 on both sides, and the limit grooves 25 are slidably connected to the limit rods 24.

[0032] It should be noted that the limiting groove 25 is adapted to the limiting rod 24. The grading grid plate 22 is vertically connected to the limiting rod 24 via the limiting groove 25, and then mounted on the extension 23 by rotation. When the limiting groove 25 and the limiting rod 24 are vertically aligned, the grading grid plate 22 can be removed.

[0033] Finally, a groove 26 is provided at one end of the support frame 21, and a stop 28 is movably inserted into the groove 26 by a second spring 27. The stop 28 abuts against the top of the other side of the graded grid plate 22.

[0034] Specifically, the top of the stop block 28 near the grading grid plate 22 extends outward to form a snap-fit ​​part. The stop block 28 is elastically supported by the second spring 27 and uses the snap-fit ​​part to snap-fit ​​the top of the other side of the grading grid plate 22, thereby fixing both sides of the grading grid plate 22.

[0035] The top of the slide 26 is provided with a guide groove, and the top of the stop 28 is extended and slidably connected in the guide groove. The extended part of the top of the stop 28 facilitates pushing the stop 28 to unlock the graded grid plate 22.

[0036] Furthermore, the first spring 34 and the second spring 27 are preferably made of materials resistant to seawater corrosion, such as stainless steel.

[0037] Working method: During operation, the fish in the main body of the net cage 1 are placed in different layers of the main body of the net cage 1 through the grading and screening effect of the multi-layer grading grid 22. For example, the grid diameter of the grading grid 22 gradually decreases from top to bottom, that is, the larger fish are placed in the top layer of the main body of the net cage 1, and the smaller fish are placed in the bottom layer of the main body of the net cage 1.

[0038] Then, by pulling the bent part of the insertion rod 32, the insertion rod 32 is disengaged from the main body 1 of the cage, thereby unlocking the support frame 21. The end of the abutment rod 33 will also engage with the slot 351 to prevent the insertion rod 32 from resetting, making it easier to fix the support frame 21 next time.

[0039] Similarly, after rotating the insertion rod 32 in the opposite direction, the abutment rod 33 is disengaged from the slot 351 and then inserted into the main body 1 of the net cage under the action of the first spring 34.

[0040] Finally, when the grading grid plate 22 needs to be replaced, push the stop block 28 to disengage the grading grid plate 22, then rotate the grading grid plate 22. When the limiting groove 25 is vertically aligned with the limiting rod 24, the grading grid plate 22 can be removed.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cage aquaculture harvesting device, comprising a cage body (1) and a net (11) fixedly connected to its periphery, characterized in that: The top of the main body (1) of the net cage is connected to an external lifting device by a hoisting rope (12). Several layers of screening components (2) are provided inside the main body (1) of the net cage. The screening components (2) are used to grade and screen fish. The screening component (2) includes a support frame (21) and a grading grid (22). The support frame (21) is fixed to the main body (1) of the cage via a plug-in assembly (3), and the support frame (21) and the grading grid (22) are detachably connected.

2. The cage aquaculture harvesting device according to claim 1, characterized in that: The main body (1) of the cage is rectangular and enclosed on all four sides with the two ends connected. The middle and bottom parts of the cage are rotatably connected to the support frame (21). The bottom of the support frame (21) extends inward to form an extension (23). The graded grid plate (22) is placed on the extension (23).

3. The cage aquaculture harvesting device according to claim 2, characterized in that: The plug-in assembly (3) includes a bracket (31). At least one bracket (31) is fixedly connected to the top of one end of the support frame (21) away from the rotating end. The bracket (31) has a U-shaped structure and a plug rod (32) is slidably connected to its top. One end of the plug rod (32) is plugged into the main body (1) of the cage.

4. The cage aquaculture harvesting device according to claim 3, characterized in that: One end of the insertion rod (32) is fixedly connected to a stop rod (33), and a first spring (34) is sleeved around it. The two ends of the first spring (34) abut against the stop rod (33) and the bracket (31) respectively. The end face of the bracket (31) is provided with a bent part (35), and the other end of the bent part (35) is provided with a slot (351). The stop rod (33) abuts against the bracket (31), and the stop rod (33) can also be engaged with the slot (351).

5. The cage aquaculture harvesting device according to claim 1, characterized in that: Limiting rods (24) are provided on both sides of the inner wall of the support frame (21), and limiting grooves (25) are provided on both sides of the graded grid plate (22). The limiting grooves (25) are slidably connected to the limiting rods (24).

6. The cage aquaculture harvesting device according to claim 1, characterized in that: A groove (26) is provided at one end of the support frame (21), and a stop (28) is movably inserted into the groove (26) by a second spring (27). The stop (28) abuts against the top of the other side of the graded grid plate (22).

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