Crab cage frame and folding crab cage

Abstract

The utility model discloses a crab cage frame and folding crab cage wherein the crab cage frame comprises an upper frame ring and a lower frame ring, the lower end of the upper frame ring is evenly provided with a plurality of upper connecting ribs in the circumferential direction, the upper end of the lower frame ring is evenly provided with a plurality of lower connecting ribs in the circumferential direction, and the upper connecting ribs are connected with the corresponding lower connecting ribs through threaded sleeves. The upper frame ring and the lower frame ring are detachably connected; the folding chair has the advantages that the folding chair can be quickly folded and unfolded and is convenient to transport and store, and structural stability and durability are kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crab cage, especially to a crab cage frame and a folding crab cage. BACKGROUND

[0002] Marine fishing industry is one of the important economic activities in the world, and crab catching as an important part of it plays an important role in maintaining the balance of fishery economy and ecology. The traditional crab cage usually adopts a fixed frame design, mainly composed of plastic grid, with stable and durable overall structure. This design can effectively prevent crabs from escaping and show high capture rate during the catching process. However, with the continuous expansion of fishing range and the enhancement of environmental protection consciousness, some inherent problems of traditional crab cage gradually appear, which need to be improved to meet the new needs.

[0003] Firstly, the biggest disadvantage of traditional crab cage is its non-foldability. After the crab catching operation is completed, these fixed cages occupy a large amount of storage space on the ship, which not only increases the transportation cost but also limits the carrying capacity of the ship, especially in long-distance fishing, the limited cabin space becomes an important factor restricting the operation efficiency. In addition, large fixed crab cages are very inconvenient to carry, which requires a lot of manpower and material resources, which is a big burden for fishermen who go to sea for a long time. Secondly, the fixed structure of the crab cage performs poorly in the face of unexpected situations. For example, in the case of severe weather or emergency evacuation, it is particularly important to quickly recover and properly dispose of the crab catching equipment, but due to the large size and heavy weight of traditional crab cages, it is often difficult to handle quickly, which not only affects the operation efficiency but also threatens the safety of fishermen.

[0004] Although some folding crab cages have appeared in the market to try to solve these problems, they generally have the problems of complex structure and difficult assembly. Many designs sacrifice the strength and stability of the cage body in pursuit of folding function, resulting in a significant reduction in crab catching effect in actual use. In addition, frequent disassembly and assembly operations can easily cause wear and tear at the connection parts, accelerate the aging of the equipment and shorten the service life.

[0005] Therefore, how to realize the lightweight, easy to carry and quick assembly of the crab cage while ensuring the crab catching performance has become a technical problem to be solved in the current marine fishing field. The present application arises in such a background and aims to provide a more modern fishing solution. UTILITY MODEL CONTENTS

[0006] One of the purposes of the utility model is to provide a crab cage frame which can be quickly folded and unfolded, convenient for transportation and storage, and at the same time maintain the stability and durability of the structure.

[0007] To achieve the above object, the utility model provides the following technical scheme: a crab cage frame, including upper frame ring and lower frame ring, the lower end of the upper frame ring is uniformly provided with a plurality of upper connecting ribs in circumference, the upper end of the lower frame ring is uniformly provided with a plurality of lower connecting ribs in circumference, the upper connecting rib is connected with the lower connecting rib corresponding through the threaded sleeve, to realize the detachable connection between the upper frame ring and the lower frame ring.

[0008] Preferably, the upper frame ring and the lower frame ring are both circular ring structures, and the diameters of the two are equal, the inside of the upper frame ring is radially provided with at least one upper reinforcing rib, and the inside of the lower frame ring is radially provided with at least one lower reinforcing rib.

[0009] Preferably, the number of the upper connecting ribs is not less than three, and the upper connecting ribs are connected with the upper frame ring in a welded manner, the number of the lower connecting ribs is the same as that of the upper connecting ribs, and the lower connecting ribs are connected with the lower frame ring in a welded manner.

[0010] Preferably, the threaded sleeve is provided with internal threads, and the end portions of the upper connecting ribs and the lower connecting ribs are provided with external threads, and the upper connecting ribs and the lower connecting ribs are connected through the cooperation of the internal threads and the external threads.

[0011] The second purpose of the utility model is to provide a folding crab cage, which comprises a net and a crab cage frame, the net is tied on the crab cage frame, and the crab cage frame is the aforementioned crab cage frame.

[0012] Preferably, the side wall of the net is provided with one or more luring entrances, and the cutting edge of the luring entrance is connected with a funnel-shaped net with gradually inwardly shrinking caliber.

[0013] Preferably, the net is a cylindrical structure, and the upper end and the lower end of the net are fixed on the upper frame ring and the lower frame ring respectively through sewing or binding.

[0014] Preferably, the net is made of a fishing net made of polyethylene or nylon material, and the mesh size is 20-40 mm.

[0015] Preferably, the crab cage frame is provided with a bait box, and the bottom and the top of the net are respectively provided with a taking and placing opening.

[0016] Preferably, the outer surface of the net is provided with a plurality of reinforcing ropes, the reinforcing ropes are longitudinally arranged along the net, and the two ends of the reinforcing ropes are fixed on the upper frame ring and the lower frame ring respectively.

[0017] Compared with the prior art, the crab cage frame has the following advantages: firstly, the structure is convenient for transportation and storage, the upper frame ring and the lower frame ring can be separated, the occupied space is greatly reduced, the transportation efficiency is improved, and the storage cost is reduced; secondly, the circumferential uniform distribution of the connecting ribs ensures that the overall structure is uniformly stressed, and the stability and load-carrying capacity of the frame are enhanced; thirdly, the threaded sleeve connection method is not only simple and convenient to operate, but also firm and reliable, can withstand various stresses in underwater environment, and is convenient for disassembly and assembly; and finally, when the frame parts are damaged, the damaged parts can be replaced, and the whole frame does not need to be replaced, thereby saving the maintenance cost and prolonging the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a three-dimensional structure schematic view of the embodiment one of the present application.

[0020] Figure 2 It is a front view of the embodiment two of the present application.

[0021] In the figure, 1 is an upper frame ring, 2 is a lower frame ring, 3 is an upper connecting rib, 4 is a lower connecting rib, 5 is a threaded sleeve, 6 is an upper reinforcing rib, 7 is a lower reinforcing rib, 8 is a net cover, 9 is an entrance, 10 is a funnel net, 11 is a bait box, 13 is a reinforcing rope, 14 is a crab cage frame, and 15 is a folding crab cage. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Embodiment one: as Figure 1As shown, a crab cage frame 14 comprises an upper frame ring 1 and a lower frame ring 2, the lower end of the upper frame ring 1 is circumferentially uniformly provided with a plurality of upper connecting ribs 3, the upper end of the lower frame ring 2 is circumferentially uniformly provided with a plurality of lower connecting ribs 4, the upper connecting rib 3 and the corresponding lower connecting rib 4 are connected through a threaded sleeve 5 to realize the detachable connection between the upper frame ring 1 and the lower frame ring 2.

[0024] In the embodiment, the upper frame ring 1 and the lower frame ring 2 are both circular ring structures and have equal diameters, the inside of the upper frame ring 1 is radially provided with at least one upper reinforcing rib 6, and the inside of the lower frame ring 2 is radially provided with at least one lower reinforcing rib 7.

[0025] In the above structure, the upper frame ring 1 and the lower frame ring 2 are both circular ring structures and have equal diameters, which can ensure the symmetry of the entire frame structure, so that the force transmission and stress are more uniform, and the overall stability and carrying capacity of the frame are improved, and the setting of the upper reinforcing rib 6 and the lower reinforcing rib 7 can greatly improve the rigidity and bending resistance of the frame ring itself, making the entire frame structure more solid and able to withstand greater external forces and loads.

[0026] In the embodiment, the number of the upper connecting rib 3 is not less than three, and the upper connecting rib 3 is connected to the upper frame ring 1 by welding, the number of the lower connecting rib 4 is the same as that of the upper connecting rib 3, and the lower connecting rib 4 is connected to the lower frame ring 2 by welding.

[0027] In the above structure, the number of the upper connecting rib 3 and the lower connecting rib 4 is the same and not less than three, which can provide enough support points to make the connection between the upper frame ring 1 and the lower frame ring 2 more firm and reliable, thereby greatly improving the carrying capacity and stability of the entire frame structure, at the same time, the multiple connecting ribs also provide multiple channels for the transmission of external forces, making the stress distribution more uniform and reducing the risk of local excessive stress.

[0028] Each connecting rib adopts a welding connection method, which can realize overall integration and avoid frame instability caused by loose connecting parts, and the welding connection has higher strength and stronger anti-vibration and impact capacity, which is especially suitable for crab cage frames 14 subjected to wave impact in marine environments.

[0029] In the embodiment, the threaded sleeve 5 is provided with an internal thread, the end of the upper connecting rib 3 and the end of the lower connecting rib 4 are correspondingly provided with an external thread, and the connection of the upper connecting rib 3 and the lower connecting rib 4 is realized through the cooperation of the internal thread and the external thread.

[0030] The threaded connection has the characteristics of convenient assembly and disassembly, and during the transportation and storage of the crab cage frame 14, the upper frame ring 1 and the lower frame ring 2 can be separated, which is beneficial to save space and reduce transportation cost, and after reaching the use site, the entire frame structure can be quickly assembled by only tightening the connection of the upper connecting rib 3 and the lower connecting rib 4 through the threaded sleeve 5, greatly saving manpower and time.

[0031] The threaded connection also enables the adjustability between the upper frame ring 1 and the lower frame ring 2. By rotating the threaded sleeve 5, the distance between the upper frame ring 1 and the lower frame ring 2 can be precisely adjusted, so that the crab cage frame 14 structure maintains a moderate pretension, thereby improving the overall rigidity and stability. This adjustability is also conducive to the crab cage frame 14 to cope with changes in different usage environments, thus improving its adaptability.

[0032] In addition, the threaded connection also has reliable self-locking performance. The engagement between the internal thread of the threaded sleeve 5 and the external thread of the connecting rib will generate a certain thread friction force, making the connection less prone to automatic loosening due to external torque, thereby ensuring the connection reliability of the frame structure.

[0033] Example 2: Figure 2 As shown, a foldable crab trap 15 includes a net 8 and a crab trap frame 14. The net 8 is tied to the crab trap frame 14, which is the crab trap frame 14 in Embodiment 1.

[0034] The crab trap frame 14 itself possesses excellent rigidity, load-bearing capacity, and detachability. The crab trap frame 14 adopts an upper and lower circular structure with internal reinforcing ribs to form a sturdy whole. The upper frame ring 1 and the lower frame ring 2 are connected by welded connecting ribs to ensure high strength and impact resistance. Threaded sleeves 5 are also used for detachable connection between the frame rings, facilitating assembly, disassembly, and adjustment. These designs make the frame structure both stable and durable, as well as easy to transport and store.

[0035] The flexible net 8 is tied to the sturdy frame, which gives the crab trap good overall performance. The frame provides basic support for the net 8, allowing it to maintain the required opening shape and size, making it easy for crabs to enter the trap. The flexibility of the net 8 itself gives the crab trap a certain degree of elasticity, which can absorb the impact of waves and prevent damage to the frame.

[0036] Thanks to the detachable connection, the upper frame 1 and lower frame 2 can be separated simply by rotating the threaded sleeve 5, and the net 8 can be folded up accordingly, greatly reducing its size and making transportation and storage much easier. After arriving at the place of use, it can be tightened and reassembled to quickly unfold into a complete crab trap shape, making it convenient and efficient to use.

[0037] In this embodiment, the sidewall of the mesh 8 has one or more inlet openings 9, and the cut edges of the inlet openings 9 are connected to a funnel mesh 10 whose diameter gradually narrows inward.

[0038] The purpose of setting the entrance 9 is to guide the crabs to enter the crab cage voluntarily. Crabs and other crustaceans have special behavior habits and are easy to be induced to enter a closed space to forage. By opening the entrance 9 on the side wall of the net 8, a channel for the crabs to enter the crab cage is provided, thereby improving the capture efficiency.

[0039] The design of connecting the funnel net 10 at the entrance 9 makes it difficult for the crabs to escape after entering the crab cage. The caliber of the funnel net 10 gradually shrinks from outside to inside, forming a structure similar to a trap. When the crabs are induced to enter, they are difficult to return along the original path, and thus are trapped in the cage, thereby effectively avoiding the escape of the captured target and ensuring the fishing effect.

[0040] In this embodiment, the net 8 is a cylindrical structure, and the upper end and the lower end thereof are fixed to the upper frame ring 1 and the lower frame ring 2 respectively by sewing or binding.

[0041] In the above structure, the cylindrical net 8 structure can well match the circular frame, and the geometric shapes of the two are consistent, which is beneficial to the unfolding of the net 8 on the frame and the maintenance of the required opening shape and size, thereby maximizing the fishing function.

[0042] The fixing of the net 8 to the frame by sewing or binding can ensure the reliable connection between the net 8 and the frame. The sewing can firmly bind the net 8 and the frame together, and the binding can adjust the tension of the net 8 according to the actual needs, so that the unfolding degree is moderate. No matter which way is adopted, the net 8 can be prevented from detaching from the frame during use and causing the escape of the captured target.

[0043] In this embodiment, the net 8 is made of a polyethylene or nylon fishing net, and the mesh size is 20-40 mm.

[0044] The structure design selects polyethylene or nylon as the raw material of the net 8, which has good corrosion resistance, aging resistance and tensile strength, and can be used in the marine environment for a long time without being easily degraded. At the same time, the two materials are flexible in texture, and the net 8 can be made with a small mesh size. The mesh size of 20-40 mm can allow smaller crabs and other small organisms to enter and exit, and can also prevent larger crabs from escaping, thereby improving the selectivity and efficiency of fishing. In addition, such a mesh size is also beneficial to the circulation of water flow, avoiding the lack of oxygen in the crab cage and affecting the survival rate.

[0045] In this embodiment, the bait box 11 is arranged in the crab cage frame 14, and the bottom and the top of the net 8 are respectively provided with a taking and placing opening.

[0046] The bait box 11 is arranged to place the bait, and the crabs are guided into the trap by the smell of the bait. The bait box 11 is arranged inside the frame to avoid the risk of the bait being washed away by the waves. The bottom and top of the net 8 are provided with access openings, which are convenient for placing and replenishing the bait and also convenient for taking out the crabs in the crab trap later.

[0047] In this embodiment, the outer surface of the net 8 is provided with a plurality of reinforcing ropes 13. The reinforcing ropes 13 are arranged longitudinally along the net 8 and are fixed at the upper frame ring 1 and the lower frame ring 2 at both ends.

[0048] The reinforcing ropes 13 are mainly arranged to enhance the overall strength and stability of the net 8. The longitudinally arranged reinforcing ropes 13 can share the tensile force received by the net 8 during use to prevent the net 8 from being excessively deformed or cracked, thereby ensuring the integrity of the crab trap. In addition, the two ends of the reinforcing ropes 13 are fixed to the upper and lower frame rings 2 of the frame, which makes the connection between the net 8 and the frame more firm and reliable and avoids the phenomenon of falling off. Furthermore, the introduction of the reinforcing ropes 13 also increases the impact resistance of the net 8. When subjected to wave impact, the flexible ropes can produce moderate deformation to absorb the impact force, and the net 8 will not be damaged due to being too rigid.

[0049] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A crab pot frame comprising an upper hoop and a lower hoop, characterised in that: The lower end of the upper frame ring is circumferentially and uniformly provided with a plurality of upper connecting ribs, the upper end of the lower frame ring is circumferentially and uniformly provided with a plurality of lower connecting ribs, and the upper connecting ribs and the corresponding lower connecting ribs are connected through threaded sleeves to realize detachable connection between the upper frame ring and the lower frame ring.

2. A crab pot frame according to claim 1, characterised in that: The upper frame ring and the lower frame ring are both circular ring structures and have equal diameters, the upper frame ring is radially provided with at least one upper reinforcing rib inside, and the lower frame ring is radially provided with at least one lower reinforcing rib inside.

3. A crab pot frame according to claim 1, wherein: The number of the upper connecting ribs is not less than three, and the upper connecting ribs are connected to the upper frame ring in a welded manner, the number of the lower connecting ribs is the same as that of the upper connecting ribs, and the lower connecting ribs are connected to the lower frame ring in a welded manner.

4. A crab pot frame according to claim 1, wherein: The threaded sleeve is internally threaded, the end portions of the upper connecting ribs and the lower connecting ribs are correspondingly externally threaded, and the upper connecting ribs and the lower connecting ribs are connected through cooperation of the internal threads and the external threads.

5. A collapsible crab pot comprising a netting and a crab pot frame, the netting being tied to the crab pot frame, characterised in that: The crab cage frame is the crab cage frame according to any one of claims 1 to 4.

6. A folding crab pot according to claim 5, wherein: The side wall of the net cover has one or more luring entrances, and the cutting edges of the luring entrances are connected to funnel-shaped nets with gradually inwardly converging diameters.

7. A folding crab pot according to claim 5, wherein: The net cover is a cylindrical structure, and the upper end and the lower end of the net cover are fixed to the upper frame ring and the lower frame ring respectively through sewing or binding.

8. The folding crab pot of claim 5, wherein: The net cover is made of a polyethylene or nylon fishing net, and the mesh size is 20-40 mm.

9. The folding crab pot of claim 5, wherein: The crab cage frame is provided with a bait box, and the bottom and the top of the net cover are respectively provided with taking and placing openings.

10. The folding crab pot of claim 5, wherein: The outer surface of the net cover is provided with a plurality of reinforcing ropes, the reinforcing ropes are longitudinally arranged along the net cover, and the two ends of each reinforcing rope are fixed to the upper frame ring and the lower frame ring respectively. The outer surface of the net cover is provided with a plurality of reinforcing ropes, the reinforcing ropes are longitudinally arranged along the net cover, and the two ends of each reinforcing rope are fixed to the upper frame ring and the lower frame ring respectively.

Images