Fishing cage for lobster breeding

Abstract

The utility model relates to the technical field of aquatic product fishing cage tools, and discloses a fishing cage for lobster culture, which comprises a fishing cage main part, the fishing cage main part comprises a main body frame group, a main body netting is fixedly arranged on the outer wall of the main body frame group, two ends of the main body netting are fixedly connected with cage tip netting bags, and a plurality of inverted beard inlets are arranged on the front and back surfaces of the main body netting. Selecting net assemblies are arranged at the multiple inverted beard inlets, the sizes of meshes of the selecting net assemblies are matched with the sizes of freshwater shrimps, and the selecting net assemblies cover the inverted beard inlets; according to the fishing cage, the selection net assembly is arranged at the inlet of the original inverted beard inlet, the screening effect can be achieved through the selection net assembly, the fishing cage can conduct accurate fishing on freshwater shrimps, the selective fishing effect is achieved, and it is avoided that ungrown lobsters and river crabs enter the fishing cage to cause economic losses; in addition, the selection net assembly can be rapidly disassembled and assembled, the selection net assembly can be disassembled when other aquatic products are caught, and operation is easy and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture fishing cage tools, and more specifically to a fishing cage for lobster farming. Background Art

[0002] A fishing cage, also known as a bottom-set net, is a stationary fishing gear used to catch aquatic animals and is widely used in the capture of marine and freshwater aquatic animals. In freshwater pond aquaculture, green shrimp are often polycultured with varieties such as Chinese mitten crabs, lobsters, and koi carps, and the main fishing tool is the bottom-set net; in polyculture ponds, the growth of green shrimp is not synchronized with that of Chinese mitten crabs, lobsters, etc., so fishing needs to be carried out at different times. From May to June and from September to October each year, it is necessary to catch green shrimp that have grown into commercial specifications in batches. At this time, varieties such as lobsters or Chinese mitten crabs are not yet mature. When using an ordinary bottom-set net to catch green shrimp, Chinese mitten crabs and other immature shrimp will also enter the net. This not only affects the activities of polycultured animals such as Chinese mitten crabs and lobsters, but also increases their casualties. Frequent fishing often affects the survival rate and causes losses. To solve this problem, some farmers hang the bottom-set net with the shrimp-dumping opening open above the water surface, allowing the Chinese mitten crabs or lobsters that enter the net to climb out by themselves, while the green shrimp cannot leave the water and stay in the net tip. However, there are still many Chinese mitten crabs and lobsters in the net that are reluctant to climb out and will eat the green shrimp, causing losses.

[0003] Chinese Patent (202123128691.8) discloses "a bottom-set net for selective fishing", which provides a solution. An inserting net perpendicular to the inlet surface is arranged at the middle position of the inlet of the bottom-set net's reverse barb. The inserting net divides the reverse barb inlet into two openings that only allow green shrimp to enter freely while crabs cannot enter. The provided solution can better solve the problem of catching green shrimp in polyculture with Chinese mitten crabs.

[0004] However, in polyculture ponds, there are other aquatic species such as Chinese mitten crabs, green shrimp, and lobsters (Procambarus clarkii). It is difficult to achieve results by setting the inserting net. There are still cases where green shrimp and immature lobsters enter the bottom-set net together, and the problem of selective fishing cannot be completely solved. Therefore, a fishing cage for lobster farming is proposed. Summary of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a fishing cage for lobster farming to solve the problem that the existing fishing cage in the above-mentioned background art cannot accurately catch the green shrimp that grow first.

[0006] The utility model provides the following technical solution: A fishing cage for lobster farming, including the main fishing cage component, the main fishing cage component includes a main body frame group, the outer wall of the main body frame group is fixedly installed with a main body net, both ends of the main body net are fixedly connected with cage tip net bags, both the front and back of the main body net are provided with a plurality of reverse barb inlets, and a selection net assembly is provided at the inlet of each of the plurality of reverse barb inlets. The mesh size of the selection net assembly is adapted to the volume of grown green shrimps, and the selection net assembly covers the inlet of the reverse barb inlet; The selection net assembly includes an outer frame and a main net body, the main net body is fixedly connected to the inner wall of the outer frame, and a plurality of convenient opening and closing lock components are fixedly connected to the outer wall of the outer frame. The plurality of convenient opening and closing lock components are respectively docked with the main body frame group and the main body net.

[0007] Further, the outer frame includes two horizontal flexible rope belts and two vertical rigid columns, and the tops and bottoms of the two vertical rigid columns are fixedly connected by the two horizontal flexible rope belts respectively.

[0008] Further, the plurality of convenient opening and closing lock components are evenly distributed on the four sides of the outer frame.

[0009] Further, the vertical rigid column is made of aluminum alloy material and is of a hollow structure.

[0010] Further, the convenient opening and closing lock component includes a hoop and a fixing ring. The hoop is fixedly installed on the side wall of the main body frame group or the net line of the main body net. The fixing ring is fixedly connected to the side wall of the outer frame. A pin column is fixedly connected to the side wall of the fixing ring, a convex column is fixedly connected to the side wall of the hoop, a sleeve cover is movably sleeved on the side wall of the convex column, the pin column is inserted into the inside of the sleeve cover, two sliding grooves are opened on the side wall of the pin column, an annular groove communicated with the sliding grooves is opened on the side wall of the pin column, and two clamping blocks are fixedly connected to the inner wall of the sleeve cover.

[0011] Further, the side wall of the pin column is closely attached to the inner wall of the sleeve cover.

[0012] Further, the mesh size of the selection net assembly is 2*2 cm.

[0013] Further, the outer frame is fixed to the main body frame group and the main body net by fixing ropes or buckles.

[0014] The technical effects and advantages of the utility model:

[0015] By arranging a selection net assembly at the entrance of the original reverse barb inlet, the utility model can achieve a screening effect through the selection net assembly, so that the fishing cage can accurately catch green shrimps, realize the selective fishing effect, avoid the economic loss caused by the entry of ungrown lobsters and crabs into the fishing cage, and in addition, the selection net assembly can be quickly disassembled and assembled. When fishing other aquatic products, the selection net assembly can be disassembled, and the operation is simple and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the top view of the present utility model;

[0017] Figure 2 is the partial front view of the present utility model;

[0018] Figure 3 for the present utility model Figure 2 is the structural schematic diagram of the selection net assembly therein;

[0019] Figure 4 for the present utility model Figure 3 is the structural schematic diagram of the convenient opening and closing lock assembly therein.

[0020] The reference numerals are: 1, main body frame group; 2, main body net; 3, inverted beard inlet; 4, cage tip net bag; 5, selection net assembly; 51, outer frame; 52, main net body; 53, convenient opening and closing lock assembly; 511, horizontal flexible rope belt; 512, vertical rigid column; 531, hoop; 532, convex column; 533, cover; 534, pin column; 535, fixed ring; 536, block; 537, chute; 538, annular groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings.

[0022] Referring to Figure 1 and Figure 2 、 3 , the present utility model provides a lobster breeding fishing cage, which includes a main fishing cage component. The main fishing cage component includes a main body frame group 1. The outer wall of the main body frame group 1 is fixedly installed with a main body net 2. Both ends of the main body net 2 are fixedly connected with cage tip net bags 4. Multiple inverted beard inlets 3 are provided on the front and back sides of the main body net 2. Selection net assemblies 5 are provided at the inlets of the multiple inverted beard inlets 3. The mesh size of the selection net assemblies 5 is adapted to the volume of grown green shrimps, and the selection net assemblies 5 cover the inlets of the inverted beard inlets 3. The selection net assemblies 5 include an outer frame 51 and a main net body 52. The main net body 52 is fixedly connected to the inner wall of the outer frame 51. A plurality of convenient opening and closing lock assemblies 53 are fixedly connected to the outer wall of the outer frame 51. The plurality of convenient opening and closing lock assemblies 53 are respectively docked with the main body frame group 1 and the main body net 2.

[0023] Referring to Figure 3, the outer frame 51 includes two horizontal flexible straps 511 and two vertical rigid columns 512. The top and bottom of the two vertical rigid columns 512 are respectively fixedly connected by the two horizontal flexible straps 511. The flexibility of the two horizontal flexible straps 511 facilitates the lateral folding of the selection net assembly 5, while the rigidity of the two vertical rigid columns 512 can prevent the selection net assembly 5 from knotting during disassembly and storage, and it is easier to deploy when installing the selection net assembly 5.

[0024] Refer to Figure 3 , a plurality of convenient opening and closing lock components 53 are evenly distributed on the four sides of the outer frame 51 to prevent a large gap from appearing between the selection net assembly 5 and the inlet of the barbed inlet 3.

[0025] Refer to Figure 3 , the vertical rigid column 512 is made of aluminum alloy material and has a hollow structure. The aluminum alloy material has a certain rigidity and is not easy to bend, and it is not easy to rust. By setting the hollow structure, the weight reduction effect can be achieved.

[0026] Refer to Figure 4 , the convenient opening and closing lock component 53 includes a hoop 531 and a fixed ring 535. The hoop 531 is fixedly installed on the side wall of the main frame group 1 or the net line of the main net 2. The fixed ring 535 is fixedly connected to the side wall of the outer frame 51. A pin 534 is fixedly connected to the side wall of the fixed ring 535. A convex column 532 is fixedly connected to the side wall of the hoop 531. A sleeve cover 533 is movably sleeved on the side wall of the convex column 532. The pin 534 is inserted into the inside of the sleeve cover 533. Two chutes 537 are opened on the side wall of the pin 534. An annular groove 538 communicating with the chute 537 is opened on the side wall of the pin 534. Two blocks 536 are fixedly connected to the inner wall of the sleeve cover 533. Connecting and disassembling the pin 534 and the sleeve cover 533 achieves the opening and closing effects of the convenient opening and closing lock component 53. When the pin 534 is inserted into the inside of the sleeve cover 533, the two blocks 536 respectively slide into the two chutes 537. When the pin 534 is completely inserted into the inside of the sleeve cover 533, the block 536 slides into the annular groove 538. Then, by rotating the sleeve cover 533 to drive the block 536 to shift in the annular groove 538, the block 536 is misaligned with the chute 537, achieving the locking effect of the pin 534 inside the sleeve cover 533. Thus, through the convenient opening and closing lock component 53, the selection net assembly 5 can ensure firmness after installation and is also convenient for disassembly and installation.

[0027] Refer to Figure 4 , the side wall of the pin 534 is closely attached to the inner wall of the sleeve cover 533, so that the pin 534 has a certain tightness inside the sleeve cover 533, preventing the sleeve cover 533 from spinning.

[0028] Refer to Figure 2, select the mesh size of the selection net component 5 to be 2 * 2 cm, randomly select organisms such as green shrimp, Procambarus clarkii, and Chinese mitten crabs caught in the pond, measure their body weight, the length of the widest part of the body, and the circumference, and the results are shown in Table 1. The individual size of general commercial green shrimp is 4 - 7 grams, and the proportion of those with a body weight of more than 7 grams is 21.6%. The maximum individual weight is 12.3 grams (which is a very large individual in general cultured green shrimp, and the population proportion is less than 3%), the length of the widest part is 1.7 cm, and the circumference of the widest part of the body is 6 cm. Therefore, almost all green shrimp can smoothly pass through an aperture with a diameter of 2 cm and a circumference of 8 cm.

[0029] The working principle of the present utility model: Aquatic products (green shrimp, Chinese mitten crabs, lobsters) can enter the interior of the main frame group 1 through the inverted barb inlet 3, and the selection net component 5 plays a filtering effect. The selection net component 5 can intercept Chinese mitten crabs and lobsters, and only green shrimp can pass through, achieving the effect of separately fishing for green shrimp.

[0030] Table 1. Body indicators of pond shrimp and crabs

[0031]

[0032]

[0033]

[0034] Example 2:

[0035] Based on Example 1: The outer frame 51 is fixed to the main frame group 1 and the main netting 2 through fixing ropes or buckles. On the premise of firmly fixing the selection net component 5, cost savings can be achieved through fixing ropes or buckles.

[0036] Example 3:

[0037] Use a 10 - meter folding knotted net single - head fishing cage, 24 joints / 22 inlets, the net frame is 33 * 45 (cm), the side length of the mesh is 0.8 cm, the diameter of the net bone is 4.0 mm, the whole set is leather, the inlets are set at one - way intervals, and it is a single - head shrimp (crab) - pouring type. Install a selection net component 5 with a size of 32×44 (cm) (the side length of the mesh is 2 cm, the material is polyethylene, and the thickness diameter is 1 mm). Four fixing ropes are evenly used around to fix it on the surrounding skeletons on the side inlet side of the cage. The inlet net can only allow green shrimp or shrimp fry to pass through freely. Using this modified cage, lower the cage to catch shrimp according to the conventional method, and 100% of green shrimp and lobster fry under 20 grams can be caught, without affecting the life of Chinese mitten crabs. When it is necessary to catch Chinese mitten crabs later, remove the selection net component 5 and catch Chinese mitten crabs normally.

[0038] Example 4:

[0039] 15-meter folding knotted fishing cage, 30 sections / 56 inlets, net frame 40 * 50 (cm), mesh side length 0.4 cm, net bone diameter 4.0 mm, full set of leather, double inlets at the opposite ends, double-headed for shrimp (crab). A selection net component 5 is installed at the entrance, with a mesh side length of 2 cm, made of polyethylene, thickness diameter of 2 mm, and all 56 inlets are installed. With this modified ground cage, when setting the cage to catch shrimp in the conventional method, it can catch 100% of the green shrimp, and can catch lobster seedlings and Australian lobster seedlings under 20 grams, without affecting the life of river crabs at all. When it is necessary to catch river crabs later, remove the selection net component 5, and then it can normally catch river crabs, lobsters, etc.

[0040] The above shows and describes the basic principles, main features and advantages of the present utility model. The present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lobster farming fishing cage, comprising a fishing cage main part, the fishing cage main part comprising a main frame group (1), the main frame group (1) having a main net (2) fixedly mounted on its outer wall, the main net (2) having cage tips (4) fixedly connected at both ends, the main net (2) having a plurality of inverted whisker inlets (3) disposed on both the front and back sides, characterized in that: A selection net assembly (5) is provided at each of the plurality of inverted whisker inlets (3); the size of the mesh of the selection net assembly (5) is adapted to the size of the grown green shrimp; the selection net assembly (5) covers the inverted whisker inlet (3); the selection net assembly (5) comprises an outer frame (51) and a main net body (52); the main net body (52) is fixedly connected to the inner wall of the outer frame (51); a plurality of convenient opening and closing lock buckle assemblies (53) are fixedly connected to the outer wall of the outer frame (51); the plurality of convenient opening and closing lock buckle assemblies (53) are respectively connected to the main frame assembly (1) and the main net garment (2).

2. A lobster farming trap according to claim 1, characterized in that: The outer frame (51) comprises two transverse flexible ropes (511) and two vertical rigid columns (512), and the tops and bottoms of the two vertical rigid columns (512) are fixedly connected by the two transverse flexible ropes (511) respectively.

3. A lobster farming trap according to claim 1, characterized in that: The plurality of convenient opening and closing lock components (53) are evenly distributed on the four sides of the outer frame (51).

4. A lobster farming trap according to claim 2, characterized in that: The vertical rigid column (512) is made of aluminum alloy and has a hollow structure.

5. The lobster farming catching cage according to claim 1, characterized in that: The convenient opening and closing lock assembly (53) comprises a clamp (531) and a fixing ring (535). The clamp (531) is fixedly installed on the side wall of the main frame group (1) or the mesh line of the main mesh (2). The fixing ring (535) is fixedly connected to the side wall of the outer frame (51). The side wall of the fixing ring (535) is fixedly connected with a pin (534). The side wall of the clamp (531) is fixedly connected with a convex column (532). The side wall of the convex column (532) is movably sleeved with a cover (533). The pin (534) is inserted into the inside of the cover (533). The side wall of the pin (534) is provided with two slide grooves (537). The side wall of the pin (534) is provided with an annular groove (538) connected to the slide groove (537). The inner wall of the cover (533) is fixedly connected with two clamping blocks (536).

6. A lobster farming trap according to claim 5, characterized in that: The side wall of the pin (534) is tightly fitted with the inner wall of the sleeve cover (533).

7. A lobster farming trap according to claim 5, characterized in that: The mesh size of the selection net component (5) is 2*2 cm.

8. The lobster farming catching cage according to claim 1, characterized in that: The outer frame (51) is fixed to the main frame assembly (1) and the main net garment (2) via fixing ropes or buckles.

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