Folding stichopus japonicus trapping device and application thereof

Abstract

The invention relates to a folding type stichopus japonicus trapping device and application thereof. The device comprises a folding supporting framework, a nylon netting covering the folding supporting framework and trapping bait, the folding supporting framework comprises a bottom connecting piece, a plurality of framework units, a tensioning rope and a top pull ring, and the framework units are connected to the bottom connecting piece and are in a radial shape with the bottom connecting piece as the center; each framework unit is formed by connecting a plurality of framework single sections through a connecting pin shaft, one end of each framework single section is provided with a turnup limiting block, the rotating angle of each framework single section around the corresponding connecting pin shaft is limited in the folded state during harvesting, and it is guaranteed that the folding type stichopus japonicus trapping device is always in a hemisphere shape or an umbrella shape in the folded state. The device is simple and light in structure, easy to manufacture and convenient to transport, and a mechanical stichopus japonicus catching mode which is high in economical efficiency and practicability is provided.

Description

Technical Field

[0001] The invention relates to the technical field of marine aquaculture, in particular to a capture technology for proliferating sea cucumbers, and in particular to a foldable sea cucumber trapping device and an application thereof. Background Art

[0002] Sea cucumbers have gradually become a popular tonic product for people due to their high nutrition, high protein and low fat. They are one of the "eight delicacies of the sea". With the increasing demand for sea cucumbers and the difficulty of meeting the demand with the number of wild sea cucumbers, more and more people are investing in sea cucumber farming, but the fishing of sea cucumbers is a problem. In recent years, the marine ranch ecological farming model with artificial reefs as the main means has become the main development trend of marine aquaculture. Artificial reefs are structures set up in the sea by humans. Their purpose is to improve the ecological environment of the sea area, create a good environment for marine organisms to live, and provide fish with a place to reproduce, grow, feed and shelter from enemies, so as to achieve the purpose of protection, proliferation and increase the catch. Artificial reef construction has been widely carried out at home and abroad to repair offshore marine habitats and fishing grounds, and good results have been achieved. In the artificial reef areas of the Yellow Sea and Bohai Sea, sea cucumbers with higher economic value are mostly seeded and multiplied, while taking into account the natural aggregation of crabs, snails, fish and other organisms. The sea cucumber harvesting in the artificial reef area is currently mainly done by artificial diving, which does not match the production needs of modern marine ranches.

[0003] Traditionally, sea cucumber harvesting is mainly done by diving, which is dangerous and labor-intensive, especially in areas with turbid water or strong winds and waves. Although there have been many research and development results such as underwater harvesting robots, the actual application of bottom seeding and artificial reef area sea cucumber harvesting has not yet been realized, which cannot meet the actual application needs of the existing industry. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a foldable sea cucumber trapping device and its application, which utilizes the biological habits of sea cucumbers and uses the trapping device to capture them during the sea cucumber feeding season, thereby solving the many disadvantages of traditional diving capture, such as high risk, high cost, and limited seawater transparency.

[0005] The present invention adopts the following technical solutions: A foldable sea cucumber trapping device comprises a foldable support frame, a nylon net covering the foldable support frame and a trapping bait, wherein the trapping bait is tied to the foldable support frame; The folding support frame includes a bottom connecting piece, a plurality of frame units, a tension rope and a top pull ring; the plurality of frame units are connected to the bottom connecting piece and are radiated with the bottom connecting piece as the center, and the nylon net is covered and fixed between the plurality of frame units; the frame unit is connected to the top pull ring through the tension rope, and the length of the tension rope is not shorter than the length of the frame unit, so as to ensure that the foldable sea cucumber trapping device can be flatly spread out after being put into the seabed; the top pull ring is connected to the retracting cable, and the retracting cable is used for the placement and harvesting of the foldable sea cucumber trapping device; The skeleton unit is composed of a plurality of skeleton sections connected by connecting pins. A tilted limit block is arranged at one end of the skeleton section to limit the rotation angle of the skeleton section around the connecting pin in the folded state during harvesting, thereby ensuring that the foldable sea cucumber trapping device always presents a hemispherical or umbrella shape in the folded state, thereby avoiding squeezing damage to the captured object.

[0006] Furthermore, the outer edges of the bottom connector and the top pull ring are equidistantly provided with limit connection holes, and are correspondingly provided. The outer edges of the bottom connector are equidistantly provided with limit connection holes, which facilitates the positioning and connection of multiple skeleton units, and the outer edges of the top pull ring are equidistantly provided with limit connection holes, which facilitates the connection of tension ropes.

[0007] Further preferably, the bottom connecting piece is an annular structure, and the center hole of the annular structure of the bottom connecting piece increases the water permeability; the limiting connecting hole of the bottom connecting piece is a groove structure, which is convenient for the skeleton unit to be embedded in the groove structure and connected by a connecting pin shaft, so as to achieve inward folding during harvesting.

[0008] Furthermore, the ends of the skeleton units are connected to the tensioning ropes via shackles, the connection is convenient and the connection can be flexibly rotated to adapt to the impact of water flow in the seabed environment.

[0009] Furthermore, the tilting angle of the limit block of the single section of the skeleton is 15° to 25°.

[0010] Furthermore, a buckle is provided on the retractable cable, and the buckle is a shackle or a ring. The buckle is movably connected to the fixed cable, that is, the buckle is sleeved outside the fixed cable and can slide along the fixed cable, and is used for the fixed-point delivery of the foldable sea cucumber trapping device and the fixation when it is used on the seabed.

[0011] Furthermore, the distance from the position where the buckle is fixed on the retractable cable to the top pull ring of the foldable sea cucumber trapping device is equal to the length of the skeleton unit in the unfolded state, that is, equal to the radius of the foldable sea cucumber trapping device.

[0012] Furthermore, the trapping bait comprises solid particles with slow-release capability, and the trapping bait is tied to the bottom connecting piece.

[0013] The application of the above-mentioned foldable sea cucumber trapping device is specifically implemented in the following steps: (1) Preparation for the fixed-point deployment of the foldable sea cucumber trapping device Prepare to place a foldable sea cucumber trapping device at a fixed point in the sea cucumber bottom seeding area or the reef interval area of ​​the artificial fish reef area, drive a fixed stake connected to a fixed cable into the seabed for fixed point fixation, tie a buoy to the top of the fixed cable, and float on the sea surface for fixed point marking; (2) Foldable sea cucumber trapping device is deployed at fixed points At the end of the summer or winter hibernation of the sea cucumber, the foldable sea cucumber trapping device is released, the retracting and releasing cable end of the foldable sea cucumber trapping device is tied to the buoy, the buckle on the retracting and releasing cable is movably sleeved to the fixed cable, and then the foldable sea cucumber trapping device is counterweighted and released to the seabed along the fixed cable to achieve fixed-point release. At this time, the foldable sea cucumber trapping device is in an unfolded state, that is, each skeleton unit of the foldable support frame is unfolded in contact with the seabed, and the foldable sea cucumber trapping device is laid flat on the seabed; at this time, the trapping bait is tied to the bottom connecting piece of the foldable support frame and placed in the center of the foldable sea cucumber trapping device. The trapping bait does not disperse when it is released, and gradually disperses after the foldable sea cucumber trapping device is stably laid flat on the seabed, so that the sea cucumber is induced to enter the foldable sea cucumber trapping device unobstructed to find food; (3) Harvesting using the foldable sea cucumber trapping device When harvesting, the retracting and releasing cable is untied at the float and lifted. At this time, the retracting and releasing cable drives the skeleton units of the folding support skeleton to be folded through the top pull ring, so that the sea cucumbers in the foldable sea cucumber trapping device are harvested; during the folding process, the limit blocks of each skeleton section limit the rotation angle of the skeleton section around the connecting pin shaft, so that the foldable sea cucumber trapping device is always in a hemispherical or umbrella shape, avoiding squeezing damage to the captured object.

[0014] Furthermore, in the sea area of ​​artificial fish reefs with regular layout in strips or with fixed reef spacing, the foldable sea cucumber trapping devices can be deployed in a row, and two fixed wooden stakes connected to fixed cables are driven into the seabed for positioning. The top of the cable is connected to a buoy, which floats on the sea surface. The tops of the fixed cables are connected to cross cables, and multiple foldable sea cucumber trapping devices are tied to the cross cables at intervals by retracting and releasing the cables. At the same time, multiple buoys are set on the fixed cables for positioning marks.

[0015] The beneficial effects of the present invention compared with the prior art are: 1. The present invention provides a highly economical and practical mechanical harvesting mode for sea cucumbers. Through fixed-point delivery and harvesting, it is easy to implement and highly efficient. The delivery and harvesting methods are simple. When delivering, the fixed cable is directly connected to easily achieve fixed-point delivery. When harvesting, the cable can be hoisted and retracted. Mechanized harvesting saves time and labor, and solves many disadvantages of traditional diving harvesting, such as high risk, high cost, and limited by seawater transparency. Moreover, the sea cucumber harvesting devices can be reused, reducing the use cost. 2. The foldable sea cucumber harvesting device of the present invention has a simple and lightweight structure, is easy to manufacture and convenient to transport. The skeleton unit, which is composed of several skeleton sections connected by connecting pins, changes the rigid support structure into a flexible structure. After being dropped into the seabed, it is in an unfolded state that fits the seabed, so that the sea cucumbers can enter the device unimpeded to forage. When harvesting, the pulling force of the retracted cable is used to form a folded state to harvest the sea cucumbers trapped in the device. The limit blocks on the skeleton sections limit the rotation angle of the skeleton sections around the connecting pins, so that the foldable sea cucumber harvesting device in the folded state always presents a hemispherical or umbrella shape, avoiding squeezing damage to the captured objects. The device does not require additional power to use, and the manufacturing and use costs are low. 3. The foldable sea cucumber harvesting device of the present invention can be deployed independently or in rows, and is highly practical and can also be used in various artificial reef construction sea areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the foldable sea cucumber trapping device of the present invention; Figure 2 yes Figure 1 Side view of Figure 3 yes Figure 1 A top view of Figure 4 yes Figure 1 Schematic diagram of the unfolded state of the middle folding support frame; Figure 5 yes Figure 1 Schematic diagram of the folded state of the middle folding support frame; Figure 6 yes Figure 4 The partial enlarged view of the middle part Ⅰ; Figure 7 yes Figure 4 The partial enlarged view of the middle Ⅱ; Figure 8This is a diagram of the fixed-point placement and use state of the foldable sea cucumber trapping device in Example 1 of the present invention; Fig. 9 This is a flow chart of the application of the foldable sea cucumber trapping device in Example 1 of the present invention; Fig.10 It is a flow chart of the application of the foldable sea cucumber trapping device in Example 2 of the present inventor; Fig.11 2 is a diagram showing the use of the foldable sea cucumber trapping device in Example 2 of the present invention in an artificial fish reef area; In the figure: 1 top pull ring, 2 tension rope, 3 nylon net, 4 single frame section, 5 connecting pin, 6 shackle, 7 bottom connecting piece, 8 limit block, A foldable sea cucumber trapping device, B fixed wooden stake, D fixed cable, F float, C buckle, E retractable cable, G horizontal cable. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0019] Example 1 The foldable sea cucumber trapping device and method for artificial fish reef areas of the present invention are used to capture sea cucumbers in the sea area where artificial fish reefs are constructed in the sea area of ​​the stone reef in Changhai County of Dalian City.

[0020] like Figures 1 to 3 As shown, a foldable sea cucumber trapping device A for artificial fish reef areas comprises a foldable support frame, a nylon net 3 covering the foldable support frame, and trapping bait.

[0021] like Figure 4 and Figure 5 As shown, the folding support frame includes a bottom connecting member 7, a plurality of frame units, a tension rope 2 and a top pull ring 1. The bottom connecting member 7, the plurality of frame units and the top pull ring 1 are made of corrosion-resistant metals such as stainless steel or aluminum alloy. The plurality of frame units are connected to the bottom connecting member 7 and are radially centered on the bottom connecting member 7. Figures 1 to 3As shown, the nylon net 3 covers and is fixed between the multiple skeleton units; the ends of the skeleton units are connected to the tension rope 2 through the shackle 6, which is convenient to connect and the connection can be flexibly rotated to adapt to the impact of water flow in the seabed environment. The length of the tension rope 2 is not shorter than the length of the skeleton unit, ensuring that the foldable sea cucumber trapping device A can be flatly spread out after being put into the seabed. The tension rope 2 is connected to the top pull ring 1, and the top pull ring 1 is connected to the retracting cable E, which is used for the placement and harvesting of the foldable sea cucumber trapping device A.

[0022] like Figure 4 and Figure 5 As shown, the skeleton unit is composed of a plurality of skeleton sections 4 connected by connecting pins 5. Figure 6 As shown, a tilted limit block 8 is provided at one end of the skeleton single section 4, and the tilting angle of the limit block 8 is 15° to 25°. When the skeleton single section 4 is in the folded state during harvesting, the rotation angle around the connecting pin 5 is limited, so as to ensure that the sea cucumber trapping device A always presents a hemispherical shape when in the folded state, thereby avoiding squeezing damage to the captured sea cucumbers and other captured organisms.

[0023] like Figure 5 and Figure 7 As shown, the bottom connector 7 is an annular structure, and the center hole of the annular structure of the bottom connector 7 increases the water permeability; the outer edges of the bottom connector 7 and the top pull ring 1 are equidistantly provided with limit connection holes, and are correspondingly provided. The limit connection holes of the bottom connector 7 are groove structures, which facilitate the skeleton unit to be embedded in the groove structure and connected through the connecting pin 5, so as to achieve inward folding and folding during harvesting. The outer edge of the top pull ring 1 is equidistantly provided with limit connection holes to connect the tensioning rope 2.

[0024] like Figure 8 As shown, a buckle C is provided on the retractable cable E, and the buckle C is a shackle or a ring. The buckle C is movably connected to the fixed cable D, that is, the buckle C is sleeved outside the fixed cable D and can slide along the fixed cable D. The buckle C is fixed on the retractable cable E, and the distance to the top pull ring 1 of the foldable sea cucumber trapping device A is equal to the length of the skeleton unit in the unfolded state, that is, equal to the radius of the foldable sea cucumber trapping device A.

[0025] like Fig. 9 As shown, the application of the above-mentioned foldable sea cucumber trapping device is specifically implemented in the following steps: (1) Preparation for the fixed-point deployment of the foldable sea cucumber trapping device like Figure 8 As shown, a foldable sea cucumber trapping device A is prepared for fixed-point placement in the reef interval area of ​​the sea cucumber bottom seeding area or the artificial fish reef area, a fixed wooden stake B connected to a fixed cable D is driven into the seabed for fixed-point fixation, a buoy F is tied to the top of the fixed cable D, and the buoy F floats on the sea surface for fixed-point marking; (2) Foldable sea cucumber trapping device is deployed at fixed points like Figure 8 As shown, at the end of the summer or winter hibernation of the sea cucumber, the foldable sea cucumber trapping device A is released, the buckle C on the retractable cable E is movably connected to the fixed cable D, and the foldable sea cucumber trapping device A is weightedly released along the fixed cable D to the seabed to achieve fixed-point release, and then the end of the retractable cable E on the sea surface is tied to the buoy F for fixation. At this time, the foldable sea cucumber trapping device A placed on the seabed is in an unfolded state, that is, each skeleton unit of the foldable support skeleton is unfolded in accordance with the seabed topography, so that the foldable sea cucumber trapping device A is spread on the seabed; at this time, a solid granular trapping bait with a diameter of 6-8 cm and a slow-release ability is placed in a hollow net bag or a container, and is tied to the bottom connecting piece 7 of the foldable support skeleton. When the foldable sea cucumber trapping device A is spread on the seabed, the trapping bait is placed at the center of the foldable sea cucumber trapping device A. The trapping bait does not disperse when it is placed. After the foldable sea cucumber trapping device A is stably spread on the seabed, it gradually disperses, so that the sea cucumbers are induced to enter the foldable sea cucumber trapping device A unobstructedly to find food; (3) Harvesting using the foldable sea cucumber trapping device According to the proliferation density of sea cucumbers, the foldable sea cucumber trapping device A is put into use for 2-3 days for harvesting. When harvesting, the retracting and releasing cable E is untied at the floating ball F, and the retracting and releasing cable E is lifted. At this time, the retracting and releasing cable E drives the skeleton units of the foldable support skeleton to be folded through the top pull ring 1, so that the sea cucumbers in the foldable sea cucumber trapping device A are harvested; during the folding process, the limit blocks 8 of each skeleton single section limit the rotation angle of the skeleton single section 4 around the connecting pin shaft 5, so as to ensure that the foldable sea cucumber trapping device A always presents a hemispherical or umbrella shape, so as to avoid squeezing damage to the captured object.

[0026] Example 2 The foldable sea cucumber trapping device of the present invention is used to capture sea cucumbers in the artificial reef construction area of ​​Changhai County, Dalian City. The reef construction layout is in the form of strips. The structure of the foldable sea cucumber trapping device A used in the artificial reef area of ​​this embodiment is the same as that of Example 1, but there is no buckle C on the retractable cable E. Fig.10 As shown, the application of the above-mentioned foldable sea cucumber trapping device is specifically implemented in the following steps: (1) Preparation for the fixed-point deployment of the foldable sea cucumber trapping device like Fig.11 As shown, along the length direction of the reef interval area of ​​the strip-shaped artificial reef area, a foldable sea cucumber trapping device A is prepared to be placed in a row, two fixed wooden stakes B connected to the fixed cable D are driven into the seabed for fixed point fixation, a buoy F is tied to the top of the fixed cable D, and the buoy F floats on the sea surface for fixed point marking, and a cross cable G is connected between the tops of the fixed cables D; (2) Folding sea cucumber trapping device A: Fixed-point placement and sea cucumber trapping like Fig.11As shown, at the end of the summer or winter hibernation of the sea cucumber, the foldable sea cucumber trapping device A is released, the retracting cables E of the multiple foldable sea cucumber trapping devices A are tied to the fixed cable G at intervals, and the foldable sea cucumber trapping device A is weighted and released into the interval area of ​​the strip-shaped artificial fish reef group; a solid granular trapping bait with a diameter of 6-8 cm and a slow-release ability is placed in a hollow net bag or container, and tied to the bottom connecting piece 7 of the foldable support frame, and the foldable sea cucumber trapping device A is placed on the seabed and then spread on the seabed. At this time, the trapping bait is placed in the center of the foldable sea cucumber trapping device A, and the trapping bait is not dispersed when it is released. After the foldable sea cucumber trapping device A is stably spread on the seabed, it is gradually dispersed, so as to induce the sea cucumber to enter the foldable sea cucumber trapping device A to forage; (3) Folding Sea Cucumber Trapping Device A Harvesting According to the proliferation density of sea cucumbers in the artificial reef area, the foldable sea cucumber trapping device A is harvested 2-3 days after it is put into use. When harvesting, the retracting cable E connected to the foldable sea cucumber trapping device A is untied from the fixed cable G, and the retracting cable E is lifted. At this time, the retracting cable E drives the foldable sea cucumber trapping device A to be folded through the top pull ring 1 to achieve the sea cucumber harvesting. During the folding process, the limit block 8 of each skeleton single section limits the rotation angle of the skeleton single section 4 around the connecting pin 5, ensuring that the foldable sea cucumber trapping device A always presents a hemispherical or umbrella shape, avoiding squeezing damage to the captured object.

[0027] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A foldable sea cucumber trapping device, characterized in that: It comprises a folding support frame, a nylon net covering the folding support frame and a trapping bait, wherein the trapping bait is tied to the folding support frame; The folding support frame includes a bottom connecting piece, a plurality of frame units, a tension rope and a top pull ring; the plurality of frame units are connected to the bottom connecting piece and are radiated with the bottom connecting piece as the center, and the nylon net is covered and fixed between the plurality of frame units; the frame unit is connected to the top pull ring through the tension rope, and the length of the tension rope is not shorter than the length of the frame unit, so as to ensure that the foldable sea cucumber trapping device can be flatly spread out after being put into the seabed; the top pull ring is connected to the retracting cable, and the retracting cable is used for the placement and harvesting of the foldable sea cucumber trapping device; The skeleton unit is composed of a plurality of skeleton sections connected by connecting pins. A tilted limit block is arranged at one end of the skeleton section to limit the rotation angle of the skeleton section around the connecting pin in the folded state during harvesting, thereby ensuring that the foldable sea cucumber trapping device always presents a hemispherical or umbrella shape in the folded state, thereby avoiding squeezing damage to the captured object.

2. The foldable sea cucumber trapping device according to claim 1, characterized in that: The outer edges of the bottom connecting piece and the top pull ring are equidistantly provided with limiting connecting holes, and are arranged correspondingly.

3. The foldable sea cucumber trapping device according to claim 2, characterized in that: The bottom connecting piece is an annular structure, and the center hole of the annular structure of the bottom connecting piece increases the water permeability; the limiting connecting hole of the bottom connecting piece is a groove structure, which is convenient for the skeleton unit to be embedded in the groove structure and connected by a connecting pin shaft, so as to achieve inward folding and collection during harvesting.

4. The foldable sea cucumber trapping device according to claim 1, characterized in that: The ends of the skeleton units are connected to the tensioning ropes through shackles.

5. The foldable sea cucumber trapping device according to claim 1, characterized in that: The tilting angle of the limit block of the single section of the skeleton is 15° to 25°.

6. The foldable sea cucumber trapping device according to claim 1, characterized in that: The retractable cable is provided with a buckle, which is a shackle or a ring. The buckle is movably sleeved on the fixed cable, that is, the buckle is sleeved outside the fixed cable and can slide along the fixed cable, and is used for the fixed-point delivery of the foldable sea cucumber trapping device and the fixation when it is used on the seabed.

7. The foldable sea cucumber trapping device according to claim 1, characterized in that: The distance from the position where the buckle is fixed on the retractable cable to the top pull ring of the foldable sea cucumber trapping device is equal to the length of the skeleton unit in the unfolded state, that is, equal to the radius of the foldable sea cucumber trapping device.

8. The foldable sea cucumber trapping device according to claim 1, characterized in that: The trapping bait comprises solid particles with slow-release capability, and the trapping bait is tied to the bottom connecting piece.

9. The use of the foldable sea cucumber trapping device according to claim 1, characterized in that: The specific implementation steps are as follows: (1) Preparation for the fixed-point deployment of the foldable sea cucumber trapping device Prepare to place a foldable sea cucumber trapping device at a fixed point in the sea cucumber bottom seeding area or the reef interval area of ​​the artificial fish reef area, drive a fixed stake connected to a fixed cable into the seabed for fixed point fixation, tie a buoy to the top of the fixed cable, and float on the sea surface for fixed point marking; (2) Foldable sea cucumber trapping device is deployed at fixed points At the end of the summer or winter hibernation of the sea cucumber, the foldable sea cucumber trapping device is released, the retracting and releasing cable end of the foldable sea cucumber trapping device is tied to the buoy, the buckle on the retracting and releasing cable is movably sleeved to the fixed cable, and then the foldable sea cucumber trapping device is counterweighted and released to the seabed along the fixed cable to achieve fixed-point release. At this time, the foldable sea cucumber trapping device is in an unfolded state, that is, each skeleton unit of the foldable support frame is unfolded in contact with the seabed, and the foldable sea cucumber trapping device is laid flat on the seabed; at this time, the trapping bait is tied to the bottom connecting piece of the foldable support frame and placed in the center of the foldable sea cucumber trapping device. The trapping bait does not disperse when it is released, and gradually disperses after the foldable sea cucumber trapping device is stably laid flat on the seabed, so that the sea cucumber is induced to enter the foldable sea cucumber trapping device unobstructed to find food; (3) Harvesting using the foldable sea cucumber trapping device When harvesting, the retracting and releasing cable is untied at the float and lifted. At this time, the retracting and releasing cable drives the skeleton units of the folding support skeleton to be folded through the top pull ring, so that the sea cucumbers in the foldable sea cucumber trapping device are harvested; during the folding process, the limit blocks of each skeleton section limit the rotation angle of the skeleton section around the connecting pin shaft, so that the foldable sea cucumber trapping device is always in a hemispherical or umbrella shape, avoiding squeezing damage to the captured object.

10. The use of the foldable sea cucumber trapping device according to claim 8, characterized in that: The foldable sea cucumber trapping device can be deployed in a row, and two fixed wooden stakes connected to fixed cables are driven into the seabed for fixing. The top of the fixed cable is connected to a buoy, and the tops of the fixed cables are connected to horizontal cables. Multiple foldable sea cucumber trapping devices are tied to the horizontal cables at intervals by retracting and releasing the cables.

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