Bait container placing device and crab pot

Abstract

The utility model discloses a bait container placing device and a crab pot, and the bait container placing device comprises a bearing body which is fixed in a crab pot body through a supporting structure; the rotating shaft is rotatably connected in the bearing body; the plurality of turning plates are uniformly fixed on the rotating shaft in the circumferential direction, and an accommodating space for accommodating a bait container is formed between the adjacent turning plates and the bearing body; the angle limiting mechanism is arranged on the bearing body and used for limiting the rotating angle of the rotating shaft; the device has the advantages that the bait container can be quickly taken and placed, and the working efficiency and the use convenience are improved.

Description

Technical Field

[0001] This utility model relates to the field of fishing gear technology, and in particular to a bait container placement device and a crab cage. Background Technology

[0002] Crab traps are passive fishing tools widely used in marine fisheries and freshwater aquaculture. They attract and trap crabs by placing bait inside. With the development of fishing technology, bait boxes have gradually become the main method of baiting crab traps. Compared with directly scattering bait, bait boxes can effectively control the release speed and range of bait, improving the baiting effect. In existing technologies, bait boxes usually adopt a sealed or semi-sealed container structure, filled with bait such as fish and shrimp, releasing odors through pre-set ventilation holes or openings, and need to be equipped with appropriate fixing devices to stably install them inside the crab trap.

[0003] Currently, the main methods for securing bait boxes in crab traps are rubber band binding and hook-and-loop fastening. Rubber band binding involves directly securing the bait box to the crab trap frame with rubber bands, while hook-and-loop fastening uses hooks on the trap, with the bait box connected and secured via corresponding hooks. However, both methods present significant operational inconveniences: rubber bands are prone to aging and damage in seawater, and need to be untied and re-tied each time the bait is changed, making the process cumbersome and time-consuming; while hook-and-loop fastening is relatively simpler, it is difficult to accurately align the bait box in the rough seas due to limited space, and the hooks can loosen and fail after prolonged use, affecting the stability of the bait box.

[0004] The inconvenience of the aforementioned fixing methods directly impacts fishermen's operational efficiency, especially in the offshore environment where fishermen need to frequently change bait to maintain its effectiveness. The existing fixing methods make the placement and removal of bait boxes difficult and time-consuming. Therefore, there is an urgent need to develop a bait container placement device that ensures stable installation of the bait box within the crab trap while also enabling convenient placement and removal, thereby improving the efficiency of the crab traps and the convenience of fishermen's operations. Utility Model Content

[0005] One of the objectives of this utility model is to provide a bait container placement device that enables the rapid placement and removal of bait containers, thereby improving operational efficiency and ease of use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bait container placement device, comprising,

[0007] The carrier is fixed to the crab cage body by a supporting structure;

[0008] The rotating shaft is rotatably connected to the support body;

[0009] Multiple flaps are circumferentially and evenly fixed on the rotating shaft, and a receiving space for accommodating bait containers is formed between adjacent flaps and the carrier.

[0010] An angle limiting mechanism is provided on the support body to limit the rotation angle of the rotating shaft.

[0011] Preferably, the carrier includes,

[0012] An arc-shaped plate, wherein the arc-shaped plate is provided with multiple mesh holes;

[0013] Two mesh panels are fixed on both sides of the arc-shaped plate, and the rotating shaft is rotatably connected between the two mesh panels.

[0014] Preferably, the angle limiting mechanism includes,

[0015] A pressure rod, one end of which is movably connected to the side wall of the bearing body, and the other end of which can move downward to press down the rotating shaft;

[0016] An elastic element is connected between the support body and the pressure bar, and the elastic element causes the pressure bar to maintain a downward tendency.

[0017] Preferably, the elastic element is a rubber ring, with both ends of the rubber ring sleeved on the pressure rod, and the middle of the rubber ring stretched and hung on a hook on the side wall of the support body.

[0018] Preferably, the end of the pressure rod has two limiting grooves, and the two ends of the rubber ring are respectively fitted into the two limiting grooves.

[0019] Preferably, the end of the rotating shaft has a polygonal structure and multiple planes for the pressure rod to press.

[0020] Preferably, the end of the rotating shaft has a regular triangular structure, and the number of flaps is three, with the three flaps evenly distributed at a 120-degree angle on the rotating shaft.

[0021] Preferably, the support structure includes,

[0022] The uprights are used to be installed vertically inside the crab cage.

[0023] The snap-fit ​​connectors are located at the upper and lower ends of the column and are used to fix them to the crab cage body.

[0024] The carrier is detachably connected to the column via a connector.

[0025] Another objective of this invention is to provide a crab trap, including a crab trap body and a bait container placement device, wherein the bait container placement device is fixed within the crab trap body.

[0026] Compared with existing technologies, the advantages of this utility model are as follows: The bait container placement device adopts a mechanical structure with a rotating shaft driving the flaps to rotate, realizing the quick loading and unloading function of the bait container. Compared with the traditional rubber band binding and hook fixing methods, this device can open or close the holding space through simple shaft operation, greatly reducing operation time and difficulty. The introduction of the angle limiting mechanism effectively controls the rotation range of the shaft, avoiding disorderly rotation of the flaps under the action of water flow, ensuring that the bait container is always in a safe holding state; the circumferentially evenly distributed design of multiple flaps creates multiple independent holding spaces, allowing more bait containers to be held in a single deployment, enhancing the overall baiting ability; the modular design of the device makes the assembly relationship between the components clear, which not only facilitates on-site assembly, but also facilitates later maintenance and component replacement.

[0027] Of particular importance is that the device’s rapid loading and unloading capabilities significantly improve the operational efficiency of individual fishermen, allowing bait changing operations that originally required multiple people to be completed by a single person. This effectively reduces the labor demand on fishing vessels, lowers labor costs, and brings direct economic benefits to fishery operators. At the same time, the simplification and standardization of operation reduces reliance on the skill requirements of operators, further optimizing the operating cost structure of fishing vessels. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0031] Figure 3 This is a three-dimensional structural diagram of the carrier in this utility model;

[0032] Figure 4 This is a three-dimensional structural diagram of the support structure in this utility model;

[0033] In the diagram, 1. Bait container placement device; 2. Carrier; 3. Support structure; 5. Rotating shaft; 6. Flip plate; 7. Accommodation space; 8. Angle limiting mechanism; 9. Arc plate; 10. Mesh; 11. Mesh plate; 12. Pressure bar; 13. Elastic element; 15. Hook; 16. Limiting groove; 17. Column; 18. Clip-on component; 19. Connector. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Example 1: As Figures 1-4 As shown, a bait container placement device 1 includes,

[0036] The carrier 2 is fixed to the crab cage body by the supporting structure 3;

[0037] The rotating shaft 5 is rotatably connected inside the bearing 2;

[0038] Multiple flaps 6 are evenly fixed on the rotating shaft 5 in a circumferential direction, and a receiving space 7 for accommodating bait containers is formed between adjacent flaps 6 and the carrier body 2.

[0039] An angle limiting mechanism 8 is installed on the carrier 2 to limit the rotation angle of the rotating shaft 5.

[0040] Example 2: Figures 1-4 As shown, unlike Embodiment 1, the carrier 2 includes,

[0041] Arc-shaped plate 9, with multiple mesh holes 10 provided on the arc-shaped plate 9;

[0042] Two mesh panels 11 are fixed on both sides of the arc-shaped plate 9, and the rotating shaft 5 is rotatably connected between the two mesh panels 11.

[0043] As the main structure of the load-bearing body 2, the arc-shaped plate 9 effectively disperses the impact force of the water flow and reduces the resistance of the ocean current to the device. At the same time, the arc design enhances the overall rigidity and deformation resistance of the structure. The multiple mesh holes 10 set on the arc-shaped plate 9 not only significantly reduce the weight of the device and lower material costs, but more importantly, they achieve good water permeability, allowing the bait scent to quickly diffuse into the surrounding waters and improve the attraction effect on crabs.

[0044] Two mesh plates 11 are fixed on both sides of the arc plate 9, forming a stable support frame, providing reliable rotational support for the rotating shaft 5, ensuring that the rotating shaft 5 can still rotate smoothly when bearing the weight of the flip plate 6 and the bait container. The mesh structure of the mesh plate 11 achieves maximum water flow while ensuring structural strength, avoiding the device swaying or instability that may be caused by water flow obstruction.

[0045] In this embodiment, the angle limiting mechanism 8 includes,

[0046] The pressure rod 12 has one end movably connected to the side wall of the bearing 2, and the other end of the pressure rod 12 can move downward to press down the rotating shaft 5;

[0047] The elastic element 13 is connected between the bearing 2 and the pressure rod 12. The elastic element 13 causes the pressure rod 12 to maintain a downward movement tendency.

[0048] The angle limiting mechanism 8 employs a design that combines a pressure rod 12 with an elastic element 13, achieving precise control and automatic positioning of the rotation angle of the rotating shaft 5. The movable connection design between one end of the pressure rod 12 and the side wall of the support body 2 allows the pressure rod 12 a certain degree of freedom of movement in the vertical direction, ensuring that the pressure rod 12 can adapt to different angular positions on the plane at the end of the rotating shaft 5, achieving effective pressing contact. The mechanism of the other end of the pressure rod 12 moving downwards to press the rotating shaft 5, through the polygonal structure at the end of the rotating shaft 5 forming multiple stable positioning points, ensures that the rotating shaft 5 can only remain at a few preset specific angular positions, thereby precisely controlling the opening and closing state of the flap 6.

[0049] The elastic element 13 connects the support body 2 and the pressure rod 12, providing a continuous downward force to the pressure rod 12. This design enables the angle limiting mechanism 8 to have an automatic reset function. When an external force causes the rotating shaft 5 to deviate from the positioning angle, the restoring force of the elastic element 13 can automatically pull the rotating shaft 5 back to the nearest stable position. At the same time, the adjustable characteristics of the elastic element 13 allow the magnitude of the pressing force to be adjusted according to actual usage needs, ensuring both the reliability of positioning and a moderate operating feel when the rotating shaft 5 rotates. The entire mechanism has a simple structure, reliable operation, and requires no external power source. It achieves automated angle control entirely through mechanical principles, greatly improving the practicality and ease of operation of the device.

[0050] Example 3: Figures 1-4 As shown, unlike Embodiment 2, the elastic element 13 is a rubber ring. The two ends of the rubber ring are sleeved on the pressure rod 12, and the middle part of the rubber ring is stretched and hung on the hook 15 on the side wall of the bearing 2.

[0051] The design of the rubber bands fitted onto the pressure rod 12 at both ends ensures that the elastic force can be directly applied to the pressure rod 12, avoiding force transmission loss. Simultaneously, the fitting method ensures a reliable connection between the rubber bands and the pressure rod 12, preventing them from falling off due to vibration or impact. The design of the rubber bands being stretched in the middle and then hooked onto the side wall hooks 15 of the support body 2 ensures that the rubber bands are always in a stretched state during installation, providing a continuous and stable downward pulling force to the pressure rod 12.

[0052] This mounting method is not only simple to install—the operator only needs to hang the stretched rubber ring on the hook 15—but also easy to disassemble and replace, making it particularly suitable for the rapid maintenance needs of offshore operating environments. The rubber ring material itself has excellent seawater corrosion resistance and elastic recovery capabilities, maintaining stable elastic performance even after long-term use in marine environments. Furthermore, the rubber ring is inexpensive and readily available, and can be quickly replaced when it ages or is damaged, significantly reducing the maintenance costs of the device. The entire elastic connection system utilizes the natural elasticity of the rubber ring to achieve automatic reset and angle control of the pressure rod 12, achieving ideal working results without the need for complex mechanical structures.

[0053] In this embodiment, the end of the pressure rod 12 has two limiting grooves 16, and the two ends of the rubber ring are respectively fitted into the two limiting grooves 16.

[0054] The limiting groove 16 provides a precise installation position for the rubber ring, ensuring that both ends of the rubber ring can be accurately positioned at the designated position on the pressure rod 12, preventing the rubber ring from sliding randomly on the surface of the pressure rod 12. This groove-type fixing method makes the force point of the rubber ring more clear and stable. When the rubber ring is subjected to tensile force, the side wall of the limiting groove 16 can withstand the lateral component force, preventing the rubber ring from moving or falling off along the axial direction of the pressure rod 12 due to the force.

[0055] In this embodiment, the end of the rotating shaft 5 is a polygonal structure with multiple planes for the pressure rod 12 to press.

[0056] Each plane of the polygonal structure represents a stable angular position. When the pressure rod 12 is pressed down by the elastic element 13, the end of the pressure rod 12 can accurately fit the plane at the end of the rotating shaft 5, forming a reliable mechanical constraint and preventing the rotating shaft 5 from continuing to rotate. This multi-plane design allows the rotating shaft 5 to have multiple preset stop positions, corresponding to different opening and closing states of the flap 6. The operator can adjust the flap 6 to the most suitable angle to place or remove the bait container as needed.

[0057] Compared to circular cross-sections, polygonal structures have a significant self-locking characteristic. When the pressure rod 12 is pressed onto the plane, even if subjected to external disturbances, the rotating shaft 5 will not easily deviate in angle, ensuring the stable containment of the bait container under the impact of waves. The surface contact between the plane and the pressure rod 12 has a larger contact area than point contact or line contact, which can effectively disperse the pressing force, reduce stress concentration, and improve the durability and reliability of the structure.

[0058] In this embodiment, the end of the rotating shaft 5 has a regular triangular structure, and there are three flaps 6. The three flaps 6 are evenly distributed on the rotating shaft 5 at an angle of 120 degrees.

[0059] The regular triangle has three planes with an included angle of 120 degrees. When the pressure rod 12 is pressed on any of the planes, the rotating shaft 5 is precisely positioned at a specific angle. These three positioning angles correspond exactly to the optimal working positions of the three flaps 6. The design of the three flaps 6 being evenly distributed at an included angle of 120 degrees on the rotating shaft 5 makes full use of the internal space of the carrier 2, forming three equal-sized accommodating spaces 7. Each space can independently accommodate a bait container, significantly increasing the bait capacity for a single delivery.

[0060] In this embodiment, the support structure 3 includes...

[0061] Column 17 is used to be vertically installed inside the crab cage body;

[0062] The snap-fit ​​connector 18 is located at the upper and lower ends of the column 17 and is used to fix it to the crab cage body.

[0063] The carrier 2 is detachably connected to the column 17 via the connector 19.

[0064] The upright column 17, as the main load-bearing component, is vertically installed inside the crab trap, providing a solid support foundation for the entire bait container placement device 1. Its vertical arrangement makes full use of the crab trap's internal space and does not interfere with the crabs' normal entry and exit activities. The snap-fit ​​connectors 18, located at both ends of the upright column 17, achieve multi-point fixation, providing stronger anti-overturning capability and stability compared to single-point fixation. They effectively resist the impact of ocean currents and the torques generated by the crab trap's swaying in various directions. The snap-fit ​​connectors 18 are mechanically connected to the crab trap body, eliminating the need for welding or bolts. Installation and disassembly are extremely convenient, making them particularly suitable for the rapid operational needs of fishermen working at sea.

[0065] The detachable connection design between the carrier 2 and the column 17 via the connector 19 further enhances the flexibility of the system. When cleaning, maintenance or replacement of the carrier 2 is required, it can be quickly separated without dismantling the entire support structure 3, which greatly reduces the complexity of maintenance work.

[0066] The connector 19 adopts an elastic snap-fit ​​structure. One end of the connector 19 is fixedly connected to the carrier 2, and the other end is designed with an elastic deformation part for connection with the column 17. During connection, the elastic part deforms under the action of external force. When aligned with the mating part on the column 17, the elastic part returns to its original shape, forming a snap-fit ​​fixation.

[0067] Example 4: As shown in the figure, unlike Example 3, a crab trap includes a crab trap body and a bait container placement device 1, which is fixed inside the crab trap body.

[0068] Before use, first, fix the snap-fit ​​18 of the support structure 3 to the corresponding position of the crab cage body to ensure that the column 17 is vertical and stable. Then, install the carrier 2 on the column 17 through the elastic connector 19 to complete the fixed installation of the entire device in the crab cage.

[0069] In use, the operator manually rotates the shaft 5 to make the flap 6 rotate. At this time, the accommodating space 7 between the adjacent flap 6 and the side wall of the carrier 2 changes, forming an opening suitable for putting in the bait container. The bait container filled with bait is put into the accommodating space 7 from the opening, ensuring that the bait container is completely placed at the bottom of the accommodating space 7.

[0070] After placement, release the rotating shaft 5. Under the action of the angle limiting mechanism 8, the elastic element 13 keeps the pressure rod 12 moving downward. The pressure rod 12 presses against the plane at the end of the rotating shaft 5, and the rotating shaft 5 automatically positions itself to the preset angle. The flip plate 6 then rotates to the optimal holding position, securely holding the bait container in the space.

[0071] When the bait needs to be changed, repeat the above operation process: rotate the shaft 5 to open the receiving space 7, take out the old bait container, put in the new bait container, and release the shaft 5 to allow it to automatically position itself. The entire operation process does not require the assistance of tools, and a single person can quickly complete the loading and unloading of the bait container, which greatly improves the work efficiency.

[0072] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A bait container placement device, characterized in that: include, The carrier is fixed to the crab cage body by a supporting structure; The rotating shaft is rotatably connected to the support body; Multiple flaps are circumferentially and evenly fixed on the rotating shaft, and a receiving space for accommodating bait containers is formed between adjacent flaps and the carrier. An angle limiting mechanism is provided on the support body to limit the rotation angle of the rotating shaft.

2. The bait container placement device according to claim 1, characterized in that: The carrier includes, An arc-shaped plate, wherein the arc-shaped plate is provided with multiple mesh holes; Two mesh panels are fixed on both sides of the arc-shaped plate, and the rotating shaft is rotatably connected between the two mesh panels.

3. The bait container placement device according to claim 1, characterized in that: The angle limiting mechanism includes, A pressure rod, one end of which is movably connected to the side wall of the bearing body, and the other end of which can move downward to press down the rotating shaft; An elastic element is connected between the support body and the pressure bar, and the elastic element causes the pressure bar to maintain a downward tendency.

4. The bait container placement device according to claim 3, characterized in that: The elastic element is a rubber ring, with both ends of the rubber ring sleeved on the pressure rod, and the middle part of the rubber ring stretched and hung on a hook on the side wall of the support body.

5. The bait container placement device according to claim 4, characterized in that: The end of the pressure rod has two limiting grooves, and the two ends of the rubber ring are respectively fitted into the two limiting grooves.

6. The bait container placement device according to claim 3, characterized in that: The end of the rotating shaft has a polygonal structure and multiple planes for the pressure rod to press.

7. A bait container placement device according to claim 6, characterized in that: The end of the rotating shaft has a regular triangular structure, and there are three flaps, which are evenly distributed at a 120-degree angle on the rotating shaft.

8. The bait container placement device according to claim 1, characterized in that: The support structure includes, The uprights are used to be installed vertically inside the crab cage. The snap-fit ​​connectors are located at the upper and lower ends of the column and are used to fix them to the crab cage body. The carrier is detachably connected to the column via a connector.

9. A crab trap, comprising a crab trap body, characterized in that: It also includes a bait container placement device as described in any one of claims 1-8, the bait container placement device being fixed inside the crab cage body.

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