Submersible intelligent fish nest

Abstract

The invention relates to the field of submersible type intelligent fish nests, in particular to a submersible type intelligent fish nest which comprises an upper-layer frame body, a lower-layer frame body, a middle frame body, a fixing frame, a recognition assembly, a connecting structure and a folding mechanism, the middle frame body comprises multiple sets of folding pipes capable of being folded, and a placing net is arranged between the upper-layer frame body and the lower-layer frame body; the folding mechanism comprises an electric cylinder and a connecting rope, and the connecting rope is connected with the multiple supporting pipes of the upper-layer frame body. Through the arrangement of the folding mechanism, the whole fish nest is shrunk when big fishes approach, roes and newly hatched juvenile fishes are concentrated in the center of the placing net, meanwhile, gaps of the fish nest are shrunk, the big fishes are not prone to entering the gaps, and the roes and the juvenile fishes are not prone to being caught and eaten. Meanwhile, the contraction action of the whole fish nest also has a frightening effect on big fishes. Therefore, the probability that the fish eggs in the fish nest and newly hatched juvenile fishes are caught by big fishes can be reduced, and the maturity rate of the juvenile fishes and the fish eggs is improved.

Description

Technical Field

[0001] This invention relates to the field of submersible intelligent fish nests, and specifically to a submersible intelligent fish nest. Background Technology

[0002] Large numbers of waterbirds directly prey on fishery resources, leading to a decline in the populations of some fish species. To prevent birds from overfeeding fish within protected areas and to provide foraging and shelter for small fish such as schizothorax and bitterling, submerged smart fish nests are typically deployed in the water to provide habitats for the fish and deter birds. These submerged smart fish nests usually consist of multiple PVC pipes and a net on which shellfish and palm flakes suitable for fish spawning are placed. The fish lay their eggs on the shellfish and palm flakes. When the eggs hatch into fry, the fry briefly attach themselves to the shellfish and palm flakes until they are fully developed and begin swimming freely before leaving.

[0003] However, there are also large fish in the water that feed on juvenile fish and fish eggs. These large fish can easily enter the submersible smart fish nest through the gaps between the PVC pipes and prey on the fish eggs attached to the net and the juvenile fish that have not yet fully developed, thus greatly reducing the maturity rate of juvenile fish and fish eggs. Summary of the Invention

[0004] The technical solution adopted by the present invention to solve its technical problem is as follows: a submersible intelligent fish nest is provided, including an upper frame, a lower frame, a middle frame and a fixed frame. The upper frame and the lower frame each include multiple support tubes. The multiple support tubes of the upper frame are all inserted into the fixed frame. The middle frame includes multiple sets of foldable tubes. A placement net is provided between the upper frame and the lower frame. The placement net is connected to the middle frame. The placement net is used to place filter-feeding shellfish. A palm sheet for fish eggs to attach is hung at the bottom of the placement net.

[0005] It also includes an identification component for identifying nearby fish;

[0006] The upper frame, middle frame, and lower frame are movably connected by the connecting structure.

[0007] The folding mechanism includes an electric cylinder and a connecting rope connected to the output end of the electric cylinder. The electric cylinder is mounted on a fixed frame. The connecting rope is connected to multiple support tubes of the upper frame. When the identification component identifies that the approaching fish is a large fish, the electric cylinder drives the multiple support tubes of the upper frame to move closer to each other through the connecting rope, thereby causing the folding tube to fold in half, ultimately causing the placement net to shrink.

[0008] Furthermore, each set of folded tubes includes two opposing folded tubes with a metal sheet between them. When folded, the two folded tubes rotate relative to each other, and the metal sheet bends.

[0009] Furthermore, the metal sheet is provided with an arched groove.

[0010] Furthermore, the metal sheet has creases formed by pre-bending. The metal is folded along the creases. When not folded, the creases are located on the end face of the metal sheet near the center of the mesh in the thickness direction.

[0011] Furthermore, the folded tube is provided with a limiting hole, a limiting rod is provided in the limiting hole, and a limiting groove is provided on the metal sheet, with the limiting rod passing through and sliding in the limiting groove.

[0012] Furthermore, each of the multiple support tubes of the upper frame is equipped with a limiting frame for fixing the connecting rope, and the connecting frame is located slightly below the midpoint of each support tube.

[0013] Furthermore, the output end of the electric cylinder is provided with a fixing block, the fixing block is provided with a connecting rod and a connecting frame, the connecting frame is movably connected to multiple support tubes of the upper frame, and the connecting rod passes through the fixing frame and is connected to the connecting rope.

[0014] Furthermore, the connecting frame is provided with multiple connecting rings, and the connecting frame is provided with through holes for the connecting rings to pass through. The top ends of the multiple support tubes of the upper frame are provided with connecting grooves for the connecting rings to pass through. The opening size of the through holes and connecting grooves is much larger than the cross-sectional size of the connecting rings.

[0015] Furthermore, the connection structure includes a support shell and a support column disposed within the support shell. The support column is provided with multiple springs, and the ends of the support tube and the folded tube located within the same support shell are elastically connected by corresponding springs and support columns.

[0016] Furthermore, both the fixing frame and the support shell are provided with through grooves for passing through the support tube and the folded tube. The size of the through grooves is much larger than the outer diameter of the support tube and the folded tube.

[0017] The beneficial effects of this invention are as follows: By employing a folding mechanism, the entire fish nest contracts when a large fish approaches. During this contraction, the fish eggs and newly hatched fry placed on the net are concentrated in the center of the net, while the gaps in the fish nest are reduced, making it difficult for large fish to enter and prey on the eggs and fry. Simultaneously, the contraction of the entire fish nest also has a deterrent effect on large fish, further reducing their approach. This decreases the probability of fish eggs and newly hatched fry being preyed upon by large fish, thereby improving the maturity rate of the fry and eggs. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] In the picture: Figure 1 This invention provides an overall structural diagram of a submersible intelligent fish nest;

[0020] Figure 2 for Figure 1 The diagram shows the three-dimensional structure of the submersible intelligent fish nest when it contracts.

[0021] Figure 3 for Figure 1 The diagram shows the three-dimensional structure of the submersible intelligent fish nest after the hidden part of the structure is shown.

[0022] Figure 4 for Figure 1 A three-dimensional structural diagram of the part shown;

[0023] Figure 5 for Figure 1 A three-dimensional structural diagram of the part shown;

[0024] Figure 6 for Figure 1 The exploded view of the intermediate frame structure shown;

[0025] Figure 7 for Figure 6 The diagram shows the three-dimensional structure of the metal sheet.

[0026] Explanation of reference numerals in the attached drawings: 100, Submersible intelligent fish nest; 10, Upper frame; 11, Support tube; 111, Limiting frame; 112, Fixing rod; 113, Connecting groove; 12, Placement net; 20, Lower frame; 30, Middle frame; 311, Folded tube; 3112, Limiting rod; 312, Metal sheet; 3121, Arched groove; 3122, Limiting slide groove; 3123, Crease; 41, Electric cylinder; 411, Fixing block; 412, Connecting rod; 413, Connecting frame; 4131, Connecting ring; 4132, Through hole; 42, Connecting rope; 50, Connecting structure; 51, Support shell; 52, Support column; 521, Spring; 60, Fixing frame; 61, Through groove. Detailed Implementation

[0027] To make the technical problem to be solved, the technical solution, and the beneficial effects of this invention clearer, the invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the invention, and therefore only shows the components relevant to the invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0028] Please refer to Figure 1 and Figure 3 This invention provides a submersible intelligent fish nest 100, including an upper frame 10, a lower frame 20, a middle frame 30, a folding mechanism and a connecting structure 50, a fixing frame 60 and an identification component. The upper frame 10, the middle frame 30 and the lower frame 20 are movably connected by the connecting structure 50. The fixing frame 60 is located at the top of the upper frame 10. The identification component is used to identify approaching fish. When the identification component identifies a large fish, the folding mechanism drives the upper frame 10 to retract the placement net 12.

[0029] Please refer to Figure 3 Both the upper frame 10 and the lower frame 20 include multiple support tubes 11. The multiple support tubes 11 of the upper frame 10 are all threaded onto the fixed frame 60. The intermediate frame 30 includes multiple sets of folded tubes, each set including two opposing folded tubes 311. Specifically, in this embodiment, the upper frame 10 includes five support tubes 11, and the lower frame 20 and the intermediate frame 30 respectively form two pentagonal base linkage structures. The two pentagonal base linkage structures are interconnected through a connecting structure 50 to form a relatively stable frame.

[0030] Please refer to Figure 3 and Figure 5 The connecting structure 50 includes a support shell 51 and a support column 52 disposed in the support shell 51. The support column 52 is provided with multiple springs 521. The ends of the support tube 11 and the folded tube 311 located in the same support shell 51 are elastically connected to the support column 52 through the corresponding springs 521.

[0031] Specifically, in this embodiment, the spring 521 is a tension spring 521. The ends of the folding tube 311 and the support tube 11 that penetrate into the support shell 51 are each provided with a fixing rod 112 for fixing the spring 521. Both the fixing frame 60 and the support shell 51 are provided with through slots 61 for the support tube 11 and the folding tube 311 to pass through. Since the movement trajectories of the support tube 11 and the folding tube 311 during the contraction process of the upper frame 10 and the placement net 12 include multiple processes such as translation and oscillation, the dimensions of the through slots 61 are much larger than the outer diameters of the support tube 11 and the folding tube 311, so as to leave sufficient space for the movement of the support tube 11 and the folding tube 311.

[0032] Please refer to Figure 2 and Figure 3 A placement net 12 is provided between the upper frame 10 and the lower frame 20. The placement net 12 is connected to the intermediate frame 30 by a rope (the rope is not shown in the figure). The placement net 12 is used to place filter-feeding shellfish. A palm sheet is hung at the bottom of the placement net 12 for fish eggs to attach to (the palm sheet and the filter-feeding shellfish are not shown in the figure).

[0033] Filter-feeding mollusks primarily provide spawning grounds for fish such as bitterlings that lay their eggs inside shells. They also purify the water, further increasing the survival rate of the fish. Palm sheets are mainly used to provide a substrate for the adhesion of sticky fish eggs.

[0034] Please refer to Figure 3 and Figure 4 The folding mechanism includes an electric cylinder 41 and a connecting rope 42 connected to the output end of the electric cylinder 41. The electric cylinder 41 is connected to the fixed frame 60. The connecting rope 42 is connected to multiple support tubes 11 of the upper frame 10. The electric cylinder 41 is used to drive the connecting rope 42 to move the multiple support tubes 11 of the upper frame 10 closer together. The electric cylinder 41 is powered by a lithium battery. In actual operation, staff will periodically remove the fish nest to check its condition and replace the lithium battery.

[0035] For further details, please refer to Figure 3 and Figure 4 The output end of the electric cylinder 41 is provided with a fixing block 411. The fixing block 411 is provided with a connecting rod 412 and a connecting frame 413. The connecting rod 412 passes through the fixing frame 60 and is connected to the connecting rope 42. Specifically, the support tube 11 of the upper frame 10 is provided with a limiting frame 111 for fixing the connecting rope 42. In order to reduce the possibility of the connecting rope 42 slipping off the limiting frame 111 and to facilitate the connection between the connecting rod 412 and the connecting rope 42, the end of the limiting frame 111 and the lower end of the connecting rod 412 are both barbed structures.

[0036] like Figure 1As shown, the connecting rope 42 consists of multiple ropes. The connecting rope 42 in the figure is only a simplified illustration; the intersections shown on the connecting rope 42 indicate one or more knots at that point. The multiple ropes are knotted with the limiting brackets 111 on each support tube 11 of the upper frame 10 to form a complete loop. A section of rope is then knotted from the limiting brackets 111 on each support tube 11, merged at the center of the placement net 12, and finally knotted. The lower end of the connecting bracket 413 hooks onto the final knot of the connecting rope 42. Simultaneously, to make it easier for the electric cylinder 41 to drive the connecting rope 42 and move the support tube 11, the connecting bracket 413 is positioned slightly below the midpoint of each support tube 11. When the placement net 12 is not retracted, the connecting rope 42 is taut.

[0037] When the electric cylinder 41 drives the center of the connecting rope 42 to rise through the connecting rod 412, the multiple support pipes 11 of the upper frame 10 are all pulled towards the center of the placement net 12 and thus move closer to each other, the tops of the multiple support pipes 11 of the upper frame 10 rise relative to the fixed frame 60.

[0038] Please refer to Figure 3 The connecting frame 413 is provided with multiple connecting rings 4131, and the connecting frame 413 is movably connected to the support tubes 11 of the upper frame 10 through the connecting rings 4131. Specifically, the connecting frame 413 is provided with through holes 4132 for the connecting rings 4131 to pass through. The top ends of the multiple support tubes 11 of the upper frame 10 are provided with connecting grooves 113 for the connecting rings 4131 to pass through. Since the movement trajectory of the multiple support tubes 11 of the upper frame 10 has projected displacement along the diameter direction and the height direction of the fixed frame 60 when the entire fish nest retracts, in order to leave room for the multiple support tubes 11 of the upper frame 10 to move, the opening size of the through holes 4132 and the connecting grooves 113 is much larger than the cross-sectional size of the connecting rings 4131.

[0039] Please refer to Figure 6 and Figure 7 A metal sheet 312 is provided between the two folded tubes 311, and the placement net 12 and the folded tubes 311 are connected by a rope. The two ends of the metal sheet 312 along its length are located inside the two folded tubes 311. When folding, the metal sheet 312 is folded along its central axis. Specifically, the support tube 11, the folded tubes 311, and the placement net 12 are all made of PVC.

[0040] An arched groove 3121 is provided on the metal sheet 312. In this embodiment, the arched groove 3121 is provided along the length direction of the metal sheet 312. When folded, it is folded along the centerline of the length direction of the metal sheet 312. The arched groove 3121 makes the side view cross-section of the metal sheet 312 form an arc-shaped cross-section, which enhances the bending stiffness of the metal sheet 312 and thus makes the metal sheet 312 rigid. When the metal sheet 312 is not folded, the arched groove 3121 changes the stress distribution, so that the metal sheet 312 can resist the bending deformation caused by gravity when it is not folded, that is, it can remain straight and not droop within a certain length, thus making it easy for the metal sheet 312 to maintain an unfolded state when the upper frame 10 is not retracted.

[0041] In addition, to prevent the edges of the net 12 from bulging upwards and causing filter-feeding shellfish to fall off when the net 12 contracts, the metal sheet 312 can only... Figure 2 The metal sheet 312 is folded towards the lower frame 20. To define the folding direction of the metal sheet 312, it requires pre-bending in this embodiment. Specifically, a crease 3123 is formed at the central axis along the length of the metal sheet 312 through pre-bending. When not folded, the crease 3123 is located on the end face of the metal sheet 312 near the center of the placement mesh 12 along its thickness direction.

[0042] To prevent the metal sheet 312 from deflecting relative to the folding tube 311 when not folded, thus causing the crease 3123 on the metal sheet 312 to be located at the end of the metal sheet 312 furthest from the center of the placement net 12, please refer to... Figure 6 The folded tube 311 is provided with a limiting hole, and a limiting rod 3112 is fixed in the limiting hole by a nut. The metal sheet 312 is provided with a limiting groove 3122, and the limiting rod 3112 passes through the limiting groove 3122.

[0043] Specifically, in this embodiment, the limiting groove 3122 is provided along the length direction of the metal sheet 312. The width of the limiting groove 3122 is adapted to the outer diameter of the limiting rod 3112. At the same time, since the metal sheet 312 has displacement relative to the folding tube 311 when folded, the length of the limiting groove 3122 is greater than the outer diameter of the limiting rod 3112, so that the limiting rod 3112 can slide relative to the limiting groove 3122 when the metal sheet 312 is folded.

[0044] The identification component includes an identification mechanism and a control module. The control module is electrically connected to the electric cylinder 41. The identification mechanism is used to identify fish. Specifically, in this embodiment, the identification mechanism is mounted on the mounting frame 60 and is not shown in the figure. The identification mechanism uses a fish acoustic imaging observation device or an underwater camera. The specific model of the fish acoustic imaging observation device is ARISEXPLORER 3000, which uses the active sonar imaging principle to image underwater targets. The underwater camera is an HT002-2KIPC series underwater camera manufactured by Qingdao Hangtai Automation Technology Co., Ltd. The identification mechanism observes the behavior and swimming speed of predatory fish in the surrounding area, thereby identifying large fish approaching the submersible intelligent fish nest and transmitting the identification results to the control module. The control module uses a PLC controller, which receives the identification results from the fish acoustic imaging observation device and controls the electric cylinder 41 according to the identification results.

[0045] For waterproof design purposes, a sealed shell (not shown in the figure) is also provided on the fixed shell. The lithium battery that powers the electric cylinder 41, the main body and control module of the electric cylinder 41, and the waterproof parts of the identification mechanism are all located inside the sealed shell.

[0046] The working process of the submersible intelligent fish nest 100 provided by the present invention is as follows: When the identification mechanism detects that a large fish is approaching, the electric cylinder 41 is activated. The electric cylinder 41 drives the connecting rod 412 to raise the center of the connecting rope 42 upward. Since the connecting rope 42 is simultaneously connected to one end of the multiple support tubes 11 of the upper frame 10 near the lower frame 20, the multiple support tubes 11 of the upper frame 10 are simultaneously subjected to a pulling force toward the center of the placement net 12. Therefore, the bottom ends of the multiple support tubes 11 of the upper frame 10 all move toward the center of the placement net 12, and at the same time, the top ends of the multiple support tubes 11 of the upper frame 10 all have an upward displacement relative to the fixed shell.

[0047] At this time, the connecting frame 413 is driven by the electric cylinder 41 and also moves upward. The top of the support tube 11 is pulled upward by the connecting frame 413, which further provides power to move the multiple support tubes 11 of the upper frame 10.

[0048] Simultaneously, the two folded tubes 311 located between two adjacent support tubes 11 rotate relative to each other, and the metal sheet 312 located between the two folded tubes 311 moves along the pre-bent crease 3123. Figure 2 The direction shown is reversed. Except for the five support pipes 11 located at the bottom, all other support pipes 11 in the lower frame 20 swing towards the center of the placement net 12. The entire upper frame 10 and placement net 12 ultimately form as shown... Figure 2As shown in the contracted state, the filter-feeding mollusks on net 12 concentrate in the drooping center of net 12 as it contracts. Larger fish find it difficult to access these mollusks. Simultaneously, after contraction, the gaps between the upper frame 10 and the lower frame 20, as well as between the middle frame 30 and the lower frame 20, become smaller, making it harder for large fish to enter these gaps and thus harder for them to access the palm fronds hanging on the bottom of net 12. Therefore, after the upper frame 10 contracts, larger fish find it difficult to prey on the fish eggs and newly hatched fry on net 12.

[0049] At the same time, the contraction of the entire fish nest also has a deterrent effect on large fish, making it even more difficult for them to approach the net 12. Ultimately, this improves the maturity rate of juvenile fish and eggs.

[0050] When it is necessary to restore the original state, the electric cylinder 41 drives the connecting rod 412 and the connecting frame 413 to descend, thereby removing the tension applied to the connecting rope 42, resetting the metal plate 312, pulling the two folded tubes 311 to reset, and then applying an outward pulling force to the support tube 11. At the same time, the connecting frame 413 applies a downward pushing force to the top of the support tube 11, ultimately resetting the entire fish nest and unfolding the net 12.

Claims

1. A submersible intelligent fish nest, comprising an upper frame, a lower frame, a middle frame, and a fixing frame, wherein both the upper and lower frames include multiple support tubes, characterized in that: The upper frame has multiple support tubes that are threaded through the fixed frame. The middle frame includes multiple sets of foldable tubes that can be folded in half. A placement net is provided between the upper frame and the lower frame. The placement net is connected to the middle frame. The placement net is used to place filter-feeding shellfish. A palm leaf for fish eggs to attach to is hung at the bottom of the placement net. It also includes an identification component for identifying nearby fish; The upper frame, middle frame, and lower frame are movably connected by the connecting structure. The folding mechanism includes an electric cylinder and a connecting rope connected to the output end of the electric cylinder. The electric cylinder is mounted on a fixed frame. The connecting rope is connected to multiple support tubes of the upper frame. When the identification component identifies that the approaching fish is a large fish, the electric cylinder drives the multiple support tubes of the upper frame to move closer to each other through the connecting rope, thereby causing the folding tube to fold in half, ultimately causing the placement net to shrink.

2. The submersible intelligent fish nest according to claim 1, characterized in that: Each set of folded tubes includes two folded tubes arranged opposite each other, with a metal sheet between the two folded tubes. When folded, the two folded tubes rotate relative to each other, and the metal sheet bends.

3. The submersible intelligent fish nest according to claim 2, characterized in that: The metal sheet has an arched groove.

4. The submersible intelligent fish nest according to claim 2, characterized in that: The metal sheet has creases formed by pre-bending. The metal is folded along the creases. When not folded, the creases are located on the end face of the metal sheet near the center of the mesh in the thickness direction.

5. The submersible intelligent fish nest according to claim 2, characterized in that: The folded tube is provided with a limiting hole, a limiting rod is provided in the limiting hole, and a limiting groove is provided on the metal sheet. The limiting rod passes through and slides in the limiting groove.

6. The submersible intelligent fish nest according to claim 1, characterized in that: Each of the multiple support tubes of the upper frame is equipped with a limiting frame for fixing the connecting rope, and the connecting frame is located slightly below the midpoint of each support tube.

7. The submersible intelligent fish nest according to claim 1, characterized in that: The output end of the electric cylinder is provided with a fixed block, and the fixed block is provided with a connecting rod and a connecting frame. The connecting frame is movably connected to multiple support tubes of the upper frame, and the connecting rod passes through the fixed frame and is connected to the connecting rope.

8. The submersible intelligent fish nest according to claim 7, characterized in that: The connecting frame is provided with multiple connecting rings and through holes for the connecting rings to pass through. The top ends of the multiple support tubes of the upper frame are provided with connecting grooves for the connecting rings to pass through. The opening size of the through holes and connecting grooves is much larger than the cross-sectional size of the connecting rings.

9. The submersible intelligent fish nest according to claim 1, characterized in that: The connection structure includes a support shell and a support column disposed within the support shell. The support column is provided with multiple springs. The ends of the support tube and the folded tube located within the same support shell are elastically connected by corresponding springs and support columns.

10. The submersible intelligent fish nest according to claim 9, characterized in that: Both the fixing frame and the support shell are provided with through grooves, which are used to pass through the support tube and the folded tube. The size of the through grooves is much larger than the outer diameter of the support tube and the folded tube.

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