An underwater fish trailing net

Abstract

The utility model discloses an underwater fish dragging catching cage, including cage body, the middle position of cage body is connected with reinforcing ring, and the inside of cage body is equipped with fixed ring, and the outside of fixed ring is connected with reinforcing ring through support rod, and the inside of fixed ring is equipped with trapping cylinder, and the outside of trapping cylinder is equipped with detachable mechanism, and detachable mechanism includes the wedge -shaped block of setting in the outside of trapping cylinder, and the wedge -shaped groove is equipped on fixed ring, and the wedge -shaped block is matched with wedge -shaped groove, and the threaded hole is equipped on fixed ring, and the screw rod is connected with screw rod in threaded hole, and the one end of screw rod is in contact with trapping cylinder, and the one end of screw rod is connected with rotating plate, and the utility model discloses the setting trapping cylinder in the middle position of cage body, and the smell of this central layout makes the bait release even spread to all around, and effectively covers all lateral conical fish mouth, and attracts the target fish class from different directions to enter the cage actively. Meanwhile, the detachable mechanism of setting outside trapping cylinder can ensure that trapping cylinder does not shake or fall off in the process of dragging, and guarantees the trapping stability.

Description

Technical Field

[0001] This utility model relates to the field of marine fishing technology, specifically to an underwater trawler trap. Background Technology

[0002] In numerous fields such as marine fisheries and aquatic biological resource surveys, underwater towed traps, as a non-destructive or low-impact sampling tool, have been widely used for the trapping and collection of target fish or other aquatic organisms. These devices typically consist of core components such as a cage, an inlet, and a retrieval mechanism. Their basic working principle involves slowly towing a baited trap to a specific water depth or close to the seabed by a vessel. The scent released by the bait attracts target organisms to swim into the cage through the inlet, and structures such as one-way barbs, funnel-shaped channels, or flexible valves prevent escape, thereby achieving selective capture of specific species or sizes of organisms.

[0003] When bait is placed inside the existing trap, it is usually suspended directly inside the trap. During the dragging process, it is easy to shift, loosen or even fall off due to water flow or collision. Furthermore, such a structure is also difficult to prevent non-target creatures with strong exploration capabilities, such as octopuses and crabs, from directly eating the bait from the outside, resulting in ineffective attraction and waste of resources. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes an underwater fish trawler to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] An underwater fish trap includes a cage body with a reinforcing ring connected to the middle of the cage body. A fixing ring is provided inside the cage body, and the outside of the fixing ring is connected to the reinforcing ring via a support rod. A trapping tube is provided inside the fixing ring, and a detachable mechanism is provided on the outside of the trapping tube. The detachable mechanism includes a wedge-shaped block located on the outside of the trapping tube. A wedge-shaped groove is provided on the fixing ring, and the wedge-shaped block matches the wedge-shaped groove. A threaded hole is provided on the fixing ring, and a screw is threadedly connected inside the threaded hole. One end of the screw abuts against the trapping tube, and the other end of the screw is connected to a rotating plate.

[0007] Furthermore, to facilitate the filling of bait inside the trapping tube, a protective cap is threaded onto one side of the trapping tube, and a through hole is provided on the trapping tube.

[0008] Furthermore, the cage has a cone-shaped fish inlet on its side.

[0009] Furthermore, in order to connect the bottom cover, an installation ring is connected to the bottom end of the cage. The bottom cover is located on one side of the installation ring, and a rotating ring is connected to one side of the bottom cover. A rotating rod is rotatably connected inside the rotating ring, and both ends of the rotating rod are connected to the installation ring. The installation ring is provided with an installation groove, and the rotating ring is located inside the installation groove.

[0010] Furthermore, to ensure the stability of the bottom cover connection, mounting plates are connected to the mounting ring and one side of the bottom cover respectively, and the two mounting plates are fixed together by bolts and nuts.

[0011] Furthermore, the wedge-shaped block is connected to the trapping tube.

[0012] Furthermore, to facilitate the connection of the towing rope, a lifting ring is provided at the top of the cage.

[0013] The beneficial effects of this utility model are as follows:

[0014] (1) By setting the trap tube in the middle of the cage, the central layout allows the scent released by the bait to diffuse evenly in all directions, effectively covering all lateral cone-shaped fish inlets. Regardless of the direction of water flow, a stable scent gradient field can be formed, thereby attracting target fish from different directions to actively enter the cage. At the same time, the trap tube is initially positioned by the wedge block set on the outside and the wedge groove on the fixing ring, and then tightened and fixed by the screw in the threaded hole. The end of the screw is connected to the rotating plate. The locking or loosening operation can be completed by simply rotating the rotating plate, which can ensure that the trap tube does not shake or fall off during the dragging process, thus ensuring the stability of the trapping.

[0015] (2) The bottom cover is hinged to the mounting groove of the mounting ring by the rotating ring and the rotating rod to achieve stable rotation opening and closing; with the mounting plates on both sides and the bolt and nut locking structure, it has good sealing and pressure resistance in the closed state to prevent the fish from leaking; when opening, the bottom cover can be flipped around the rotating rod by simply loosening the bolts, which makes it easy to quickly take out the catch. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front view of an underwater fish trawler according to an embodiment of the present utility model;

[0018] Figure 2 This is a side view of an underwater fish trawler according to an embodiment of the present utility model;

[0019] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0021] Figure 5 This is a structural diagram of an underwater fish-trapping cage trap according to an embodiment of the present utility model.

[0022] In the picture:

[0023] 1. Cage body; 2. Reinforcing ring; 3. Support rod; 4. Fixing ring; 5. Trapping tube; 6. Detachable mechanism; 601. Wedge block; 602. Wedge groove; 603. Threaded hole; 604. Screw; 605. Rotating plate; 7. Protective cover; 8. Through hole; 9. Conical fish inlet; 10. Mounting ring; 11. Bottom cover; 12. Rotating ring; 13. Rotating rod; 14. Mounting groove; 15. Mounting plate; 16. Lifting ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] According to an embodiment of the present invention, an underwater fish trawling cage is provided.

[0026] like Figures 1-5As shown, the underwater trawler trap according to an embodiment of this utility model includes a cage body 1. The cage body 1 serves as the basic frame of the entire trapping device and is made of high-strength, corrosion-resistant materials to ensure long-term stable use in complex marine environments. A reinforcing ring 2 is connected to the middle of the cage body 1, and a fixing ring 4 is provided inside the cage body 1. The outside of the fixing ring 4 is connected to the reinforcing ring 2 through a support rod 3, which enhances the overall rigidity and pressure resistance of the cage body 1, enabling it to maintain structural integrity in deep-sea or strong current environments and avoid deformation due to external pressure or collision. A trapping tube 5 is provided inside the fixing ring 4, and a detachable mechanism 6 is provided on the outside of the trapping tube 5. The detachable mechanism 6 is located on a wedge-shaped block 601 on the outside of the trapping tube 5, and the wedge-shaped block 601 is connected to the trapping tube 5 for fixation. The ring 4 has a wedge-shaped groove 602, and the wedge-shaped block 601 matches the wedge-shaped groove 602. The fixing ring 4 has a threaded hole 603, and a screw 604 is threadedly connected inside the threaded hole 603. One end of the screw 604 abuts against the trapping tube 5, and the other end of the screw 604 is connected to the rotating plate 605. By rotating the rotating plate 605, the tightness of the screw 604 can be adjusted, and the locking or releasing operation of the trapping tube 5 can be easily completed. A protective cover 7 is threadedly connected to one side of the trapping tube 5. The protective cover 7 not only facilitates the loading and replacement of bait, but also effectively prevents the bait from being accidentally lost during transportation or deployment. The trapping tube 5 has a through hole 8, which allows the scent emitted by the bait to diffuse evenly to the surrounding waters, attracting target fish from a distance. At the same time, the through hole 8 is of moderate size, which can ensure the effective spread of the scent, while being sufficient to prevent non-target organisms from directly contacting the bait.

[0027] like Figures 1-4 As shown, the cage body 1 has a conical fish inlet 9 on its side. The conical fish inlet 9 is equipped with a one-way channel mechanism with a valve structure, which allows fish to enter the cage body 1 only in the direction of water flow and scent. Once inside, it is difficult for fish to swim out in the opposite direction. The bottom of the cage body 1 is connected to an installation ring 10. The installation ring 10 has a bottom cover 11 on one side. The bottom cover 11 has a rotating ring 12 connected to one side. The rotating ring 12 has a rotating rod 13 rotatably connected inside. The two ends of the rotating rod 13 are connected to the installation ring 10. The installation ring 10 has an installation groove 14. The rotating ring 12 is located inside the installation groove 14. The installation ring 10 and the bottom cover 11 are respectively connected to an installation plate 15. The two installation plates 15 are fixed together by bolts and nuts, which can facilitate quick opening and cleaning of the catch, and also ensure that the bottom cover 11 is tightly closed during towing. The top of the cage body 1 has a hanging ring 16, which provides a convenient hanging point for the capture cage. Whether towed by a ship or used in conjunction with a buoy system, the cage body 1 can be easily deployed and retrieved.

[0028] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0029] In use, before deploying the trap, the operator first needs to open the protective cover 7 on one side of the trap tube 5 and fill it with pre-prepared bait. After filling, the operator installs the wedge-shaped block 601 on the outside of the protective cover 7 into the wedge-shaped groove 602. Next, the operator adjusts the screw 604 on the fixing ring 4 by rotating the rotating plate 605, so that one end of the screw 604 is tightly against the surface of the trap tube 5, thus locking the trap tube 5. This further enhances the stability of the trap tube 5 within the cage body 1, ensuring that it will not shift or fall off during towing. After all preparations are completed, the trap is suspended from the towing device or buoy system of the ship via the top hanging ring 16, and then slowly lowered into the water. The multiple conical fish inlets 9 on the side of the cage body 1 then come into play. These inlets utilize the principles of water flow guidance and fish chemotaxis to guide the target fish into the cage along the water flow and the scent emitted by the bait. The internal valve-type one-way channel mechanism effectively prevents fish from swimming backwards, thereby significantly improving the capture efficiency. During towing, the reinforcing ring 2 in the middle of the cage 1 and the internal fixing ring 4 connected by the support rod 3 work together to greatly enhance the overall rigidity and compressive strength of the cage 1. After the capture operation is completed, the capture cage is pulled out of the water and placed on a boat or other recovery platform. At this time, the bolts and nuts between the mounting plates 15 on both sides of the bottom cover 11 are loosened, and the bottom cover 11 is easily opened by rotating the hinge system composed of the ring 12 and the rotating rod 13, so as to quickly clean and remove the catch, and to facilitate the disassembly and removal of the trap tube 5 through the bottom cover 11.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An underwater trawler for catching fish, characterized in that, The cage includes a cage body (1), a reinforcing ring (2) connected in the middle of the cage body (1), a fixing ring (4) inside the cage body (1), and the outer side of the fixing ring (4) connected to the reinforcing ring (2) by a support rod (3). The fixing ring (4) has a trapping tube (5) inside, and a detachable mechanism (6) is provided on the outer side of the trapping tube (5). The detachable mechanism (6) includes a wedge block (601) on the outer side of the trapping tube (5), a wedge groove (602) on the fixing ring (4), the wedge block (601) and the wedge groove (602) are matched, and a threaded hole (603) is provided on the fixing ring (4). A screw (604) is threadedly connected inside the threaded hole (603). One end of the screw (604) abuts against the trapping tube (5), and the other end of the screw (604) is connected to the rotating plate (605).

2. The underwater fish trawler according to claim 1, characterized in that, A protective cover (7) is connected to one side of the trapping tube (5) by a thread, and a through hole (8) is provided on the trapping tube (5).

3. The underwater fish trawler according to claim 1, characterized in that, The cage (1) has a cone-shaped fish inlet (9) on its side.

4. The underwater trawler trap according to claim 1, characterized in that, The bottom of the cage (1) is connected to an installation ring (10). A bottom cover (11) is provided on one side of the installation ring (10). A rotating ring (12) is connected on one side of the bottom cover (11). A rotating rod (13) is rotatably connected inside the rotating ring (12). The two ends of the rotating rod (13) are connected to the installation ring (10). An installation groove (14) is provided on the installation ring (10). The rotating ring (12) is located inside the installation groove (14).

5. The underwater trawler trap according to claim 4, characterized in that, Mounting ring (10) and bottom cover (11) are respectively connected to mounting plates (15), and the two mounting plates (15) are fixed together by bolts and nuts.

6. The underwater trawler trap according to claim 1, characterized in that, The top of the cage (1) is equipped with a lifting ring (16).

Images