Ground cage sampling equipment and sampling method for investigating fish resources in deepwater reservoir

Abstract

The invention discloses ground cage sampling equipment and a sampling method for deep water reservoir fish resource investigation, and relates to the technical field of fish breeding, the ground cage sampling equipment comprises a floating body, a propeller is fixedly connected to the side face of the floating body, and an air bag is fixedly connected to the position, close to the edge, of the surface of the floating body; the top of the floating body is fixedly connected with a lifting mechanism. According to the ground cage sampling equipment and method for deep water reservoir fish resource investigation, the bottom of the sampling and collecting mechanism makes contact with the water bottom, fishes enter the sampling and collecting mechanism under attraction of food, after a period of time, a hoist rotates reversely to make a screw rotate and move upwards, and an anti-blocking assembly cleans the surface of the screw; and the sampling and collecting mechanism carries the fishes and water to a position above the floating body, so that the problem of how to sample the fishes cultured in a deep water area so as to conveniently observe the growth condition of the fishes is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of fish breeding, and specifically to a cage sampling device and sampling method for fish resource investigation in deep-water reservoirs. Background Technique

[0002] The data collected by fish monitoring can be used to quantitatively describe the species composition and community structure status of fish in various water bodies, analyze the interaction relationship between them and environmental factors, and guide fishery resource management, etc. Therefore, the investigation tools or devices used for fish monitoring also need to meet the monitoring requirements of various water bodies. Currently, in the fish investigations carried out in various types of waters in China, there are a wide variety of investigation methods and fishing gears, including trawling, fishing weirs, silk nets, electrofishing, etc. However, these methods or tools are mostly used in the ocean or shallow lakes and reservoirs, and are not suitable for some deep lakes or reservoirs with relatively deep water and complex bottom topography. Chinese Patent Publication No.: CN115104561B discloses "An Automatic Sampling Device and Cultivation System for Observation of Turbot Fish Egg Hatching". The collected samples in this patent can show the hatching status of fish eggs at different times in real time. There is a lifting and filtering mechanism in the hatching frame. After the fish eggs are hatched, the lifting drive mechanism drives the hatching frame to rise, lifting the hatched fry close to the water surface, and using an industrial camera to take pictures and record the hatching rate and growth status. Through the samples, the hatching rate and other relevant information of this batch of fish eggs can be analyzed. There are "W"-shaped continuously distributed guide plates at the bottom of the hatching frame, and the guide plates are provided with fine slits, which can export the fish eggs with poor quality downward into the cultivation pond. On the one hand, it ensures that the hatching space of turbot fish eggs is cleaner, and on the other hand, it also prevents these necrotic fish eggs from being photographed by the subsequent industrial camera, thus ensuring that the collected samples are more reasonable.

[0003] For the existing cage sampling devices and sampling methods for fish resource investigation in deep-water reservoirs, due to structural design defects, there are problems such as how to sample the fish cultured in deep waters to facilitate the observation of the growth status of the fish, and how to avoid stress injuries to the fish during the sampling process. Summary of the Invention

[0004] The present invention provides a cage sampling device and sampling method for fish resource investigation in deep-water reservoirs, which solves the problems mentioned in the above background technique.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A cage sampling device for fish resource investigation in a deep-water reservoir, including a floating body, a propeller is fixedly connected to the side position of the floating body, an airbag is fixedly connected to the position of the floating body surface close to the edge, a lifting mechanism is fixedly connected to the top of the floating body, a support plate is fixedly connected to the bottom of the lifting mechanism, and further includes:

[0006] Sampling and collection mechanism, which is fixedly installed in the middle position of the surface of the support plate. The sampling and collection mechanism is used for inducing, sampling and detecting fish in the deep water area of aquaculture and releasing the fish without stress after sampling.

[0007] Stabilizing component, which is fixedly installed near the edge of the top of the support plate. The stabilizing component is used for the stable connection between the support plate and the underwater soil. The propeller drives the floating body to move randomly on the water surface. The elastic buffer of the airbag can prevent damage caused by the rigid impact of the floating body. When it is necessary to investigate the growth status of fish breeding underwater, the hoist drives the screw rod to rotate and move downward. The roller makes the screw rod and the cylinder body rotate and connect. The support plate is driven by the screw rod to move closer to the bottom of the water. The stabilizing component extends into the internal part of the underwater soil, so that the whole device will not move with the impact of the water flow.

[0008] Among them, the sampling and collection mechanism includes a sampling cylinder. The bottom of the sampling cylinder is fixedly installed in the middle position of the top of the support plate. An induction component is sleeved on the surface of the sampling cylinder. A sealing sleeve body is fixedly connected to the middle position of the inner side surface of the sampling cylinder. An opening pipe is fixedly connected above the surface of the sealing sleeve body. An electromagnet is fixedly connected to the bottom of the opening pipe. An opening and closing component is sleeved on the surface of the opening pipe. A traction rope is fixedly connected to the top of the opening and closing component. A winding device is fixedly connected to the top of the floating body. One end of the traction rope far away from the opening and closing component is fixedly installed on the surface of the winding device.

[0009] Preferably, a power supply device is fixedly connected to the top of the inner side surface of the sealing sleeve body. A bottom shell is fixedly connected to the bottom of the support plate near the sampling cylinder. The bottom of the sealing sleeve body is fixedly connected with a pressure detector.

[0010] Preferably, the induction component includes an arc-shaped shell. An extension plate is fixedly connected to the end face position of the arc-shaped shell. A tubular net is clamped on the inner side surface of the arc-shaped shell.

[0011] Preferably, there are two arc-shaped shells. Bolts are connected to the surface of the extension plate through threads. A drawstring is fixedly connected to the end face position of the tubular net. The inner side surface of the arc-shaped shell is in close contact with the position of the sampling cylinder surface near the opening. The floating body floats on the water surface. The middle positions of the sampling cylinder and the floating body surface are opposite. When the screw rod rotates and moves downward, the bottom of the bottom shell is in direct contact with the bottom of the water. When the pressure detector detects that the bottom shell touches the bottom, the output end of the pressure detector is electrically connected to the input end of the electromagnet. The electromagnet is powered off. The winding device winds the traction rope. The opening and closing component is pulled to move upward. The opening pipe guides the movement of the opening and closing component.

[0012] Preferably, the opening and closing assembly includes an arc-shaped cover. An inner groove block is fixedly connected to the inner side surface of the arc-shaped cover. The inner side surface of the inner groove block is slidably connected to the surface of the slotted pipe. A gravity roller is fixedly connected to the bottom of the arc-shaped cover.

[0013] Preferably, the lifting mechanism includes a hoist and a cylinder body. The bottom of the hoist is fixedly installed on the top of the floating body. A screw rod is threadedly connected to the inner side surface of the hoist. The cylinder body is fixedly installed on the top of the support plate. A roller is arranged between the bottom end of the screw rod and the inner side surface of the cylinder body. Extension plates are arranged at the relative positions between two arc-shaped shells. The bait is stuffed into the inside of the tubular net. The two ends of the tubular net are tightened by the drawstring. The arc-shaped shell is fixedly installed at the opening position of the sampling cylinder. The fine holes on the surface of the tubular net enable the bait to attract fish to forage. At the same time, due to the small aperture, the time for attracting fish is effectively increased, making the sampling efficiency of the sampling cylinder for fish higher.

[0014] Preferably, the lifting mechanism further includes a flared wall. The flared wall is fixedly installed at a position on the bottom of the floating body close to the hoist. A anti-jamming component is fixedly connected to the bottom of the flared wall.

[0015] Preferably, the anti-jamming component includes an internally threaded pipe. The top of the internally threaded pipe is fixedly installed at the bottom of the flared wall. The inner side surface of the internally threaded pipe is in close contact with the surface of the screw rod.

[0016] Preferably, the anti-jamming component further includes a guide sliding table. The inner side surface of the guide sliding table is fixedly installed on the outer surface of the internally threaded pipe. A sliding rod is slidably connected to the inner side surface of the guide sliding table. A spiral piece is fixedly connected to the surface of the sliding rod. The inner side surface of the inner groove block is slidably connected to the surface of the slotted pipe. The inner groove block is made of a magnetic material. When the sampling cylinder moves downward, the inner groove block is attracted to the electromagnet by magnetic force. The arc-shaped shell is pressed on the top of the sampling cylinder. The sampling cylinder moves downward with the support plate. The electromagnet is disconnected. The traction rope pulls the arc-shaped cover upward, enabling the fish inside the sampling cylinder to be released underwater. During the sampling process, the sampling cylinder is at the bottom of the water. Debris underwater is likely to accumulate on the surface of the screw rod, and algae is also likely to deposit on the surface of the screw rod, causing the hoist to fail.

[0017] Preferably, the stabilizing assembly includes a bottom cylinder fixedly installed on the top of the support plate. Above the surface of the bottom cylinder, a connecting body is hermetically connected by threads. The inner side of the connecting body is threadedly connected with an installation pipe. The top of the installation pipe is fixedly connected with a protective strip. In the middle of the surface of the connecting body, a pressure valve is fixedly connected. The bottom cylinder is fixedly installed at the edge position of the top of the support plate. When the sampling cylinder is above the floating body, the air pump is above the water surface. The air pump injects gas into the inside of the rubber wall. Due to the blockage of the pressure valve, the rubber wall expands. After the support plate moves downward, the position between the bottom of the plunger rod and the bottom cylinder is submerged in water, causing the plunger rod to move upward. When the bottom shell moves downward close to the bottom of the water, the fish covered by the bottom of the bottom shell can escape through the opening, thus avoiding the fish being covered and injured.

[0018] Preferably, the stabilizing assembly further includes a plunger rod slidably installed on the inner side of the bottom cylinder. The bottom of the plunger rod is fixedly connected with a drill bit. An air pump is fixedly connected to the surface of the installation pipe. A rubber wall is fixedly connected to the inner side of the installation pipe. A waterproof tape is wound around the outer surface of the installation pipe.

[0019] A cage sampling method for fish resources investigation in deep water reservoirs includes the following steps:

[0020] Step 1: Underwater positioning. The propeller drives the floating body to move randomly on the water surface. The elastic buffer of the airbag can prevent the floating body from being damaged by rigid impact. When it is necessary to investigate the growth status of fish breeding underwater, the hoist drives the screw rod to rotate and move downward. The roller enables the screw rod to be rotatably connected with the cylinder body. The support plate is driven by the screw rod to move close to the bottom of the water. The stabilizing assembly extends into the internal bottom soil of the water, and the bottom of the sampling and collection mechanism contacts the bottom of the water.

[0021] Step 2: Open the cover for sampling. When the pressure detector detects that the bottom shell touches the bottom, the output end of the pressure detector is electrically connected to the input end of the electromagnet. The electromagnet is powered off. The winding device winds up the towing rope. The opening and closing assembly is pulled to move upward. The slotted pipe guides the movement of the opening and closing assembly. The top of the sampling cylinder is separated from the bottom of the opening and closing assembly. Fish enter the sampling cylinder to forage.

[0022] Step 3: Induce foraging. Extension plates are arranged at the relative positions between the two arc-shaped shells. The bait is stuffed into the inside of the tubular net. The two ends of the tubular net are tightened by the drawstring. The arc-shaped shells are fixedly installed at the opening positions of the sampling cylinder. The fine holes on the surface of the tubular net enable the bait to attract fish to forage. At the same time, due to the small aperture, the time for attracting fish is effectively increased, making the sampling efficiency of the sampling cylinder for fish higher.

[0023] Step 4: Debris removal and improvement. When the sampling cylinder is at the bottom of the water, underwater debris easily accumulates on the surface of the screw, and algae also easily deposit on the surface of the screw, causing the hoist to fail. In this device, the inner side of the internal thread pipe is slidably connected to the surface of the screw. When the screw rotates and moves upward, the sediment is scraped off by the internal thread pipe, and the water flow easily drives the spiral blade to rotate. The sliding rod slides on the inner side of the guide slide under the drive of the spiral blade, so that the debris accumulated near the internal thread pipe is driven away.

[0024] The present invention provides a cage sampling device and a sampling method for fish resources investigation in deep-water reservoirs, having the following beneficial effects:

[0025] 1. For the cage sampling device and the sampling method for fish resources investigation in deep-water reservoirs, the bottom of the sampling and collection mechanism contacts the bottom of the water. Fish are attracted by food and enter the interior of the sampling and collection mechanism. After a period of time, the hoist reverses to make the screw rotate and move upward, and the anti-jamming component cleans the surface of the screw to prevent debris from jamming on the inner side of the hoist. The sampling and collection mechanism carries fish and water to a position above the floating body, solving the problem of how to sample the fish cultured in deep water areas to facilitate the observation of the growth status of the fish.

[0026] 2. For the cage sampling device and the sampling method for fish resources investigation in deep-water reservoirs, the sealing sleeve body seals and protects the power supply device and the wiring. The power supply device supplies power to the electromagnet and the pressure detector. The top of the sampling cylinder is separated from the bottom of the opening and closing component. The interior of the induction component contains food, and the food overflows through the openings on the surface of the sampling cylinder. Fish enter the sampling cylinder to forage. After a period of time, the sampling cylinder is driven upward by the screw, and the sampling cylinder transports part of the water and fish to a position above the floating body at the same time, making the fish sampling efficiency higher.

[0027] 3. For the cage sampling device and the sampling method for fish resources investigation in deep-water reservoirs, the gravity rollers increase the self-weight of the arc-shaped cover. The uniformly arranged multiple gravity rollers make the arc-shaped cover move more stably up and down and not easily damaged by the water flow impact. When the bottom of the bottom shell contacts the bottom of the water, the electromagnet is powered off, and the winding device uses the traction rope to pull the arc-shaped cover upward. The bottom of the arc-shaped cover is separated from the top of the sampling cylinder. The opening and closing of the arc-shaped cover enable the fish to be released at a deep water position, solving the problem of how to avoid the fish being stressed and injured by the water splash impact during the sampling process.

[0028] 4. For the cage sampling device and the sampling method for fish resources investigation in deep-water reservoirs, the inner side of the internal thread pipe is slidably connected to the surface of the screw. When the screw rotates and moves upward, the sediment is scraped off by the internal thread pipe, and the water flow easily drives the spiral blade to rotate. The sliding rod slides on the inner side of the guide slide under the drive of the spiral blade, so that the debris accumulated near the internal thread pipe is driven away, preventing the sampling cylinder from being unable to sample normally.

[0029] 5. The cage sampling device and sampling method for fish resources investigation in deep-water reservoirs. When the bottom shell is in firm contact with the ground, the pressure valve opens. The outside of the rubber wall receives water pressure, and the gas inside the rubber wall is quickly ejected under the dual action of elastic potential energy and water pressure. The top of the plunger rod receives a rapid air pressure impact, and the water at the bottom of the plunger rod is quickly discharged, enabling the drill bit to quickly insert into the bottom soil. When sampling relying on the bait inside the tubular net, the position of the sampling cylinder is not easily drifted by the water flow and is more stable, and the fish are not easily frightened and escape, resulting in higher sampling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a flowchart of the cage sampling method for fish resources investigation in deep-water reservoirs of the present invention;

[0031] Figure 2 It is a perspective view of the overall top of the cage sampling device for fish resources investigation in deep-water reservoirs of the present invention;

[0032] Figure 3 It is a perspective view of the overall bottom of the cage sampling device for fish resources investigation in deep-water reservoirs of the present invention;

[0033] Figure 4 It is a schematic structural view of a partial lifting mechanism of the present invention;

[0034] Figure 5 It is a schematic structural view of a partial cage sampling device for fish resources investigation in deep-water reservoirs of the present invention;

[0035] Figure 6 It is a schematic structural view of the anti-jamming component of the present invention;

[0036] Figure 7 It is a schematic structural view of the sampling collection mechanism of the present invention;

[0037] Figure 8 It is a schematic structural view of the opening and closing component of the present invention;

[0038] Figure 9 It is a schematic structural view of the induction component of the present invention;

[0039] Figure 10 It is a schematic structural view of the stabilizing component of the present invention.

[0040] In the figure: 1. Floating body; 2. Propeller; 3. Airbag; 4. Lifting mechanism; 41. Hoist; 42. Screw rod; 43. Cylinder body; 44. Roller; 45. Flared wall; 46. Anti-jamming assembly; 461. Internal threaded pipe; 462. Guide sliding table; 463. Sliding rod; 464. Spiral blade; 5. Support plate; 6. Sampling and collection mechanism; 61. Sampling cylinder; 62. Sealing sleeve body; 63. Bottom shell; 64. Pressure detector; 65. Inducing assembly; 651. Arc-shaped shell; 652. Extension plate; 653. Tubular net; 654. Drawstring; 66. Slotted pipe; 67. Electromagnet; 68. Opening and closing assembly; 681. Arc-shaped cover; 682. Inner groove block; 683. Gravity roller; 69. Power supply device; 7. Stabilizing assembly; 71. Bottom cylinder; 72. Plunger rod; 721. Drill bit; 73. Connecting body; 74. Pressure valve; 75. Installation pipe; 76. Protective strip; 77. Rubber wall; 78. Air pump; 79. Waterproof strip; 8. Towing rope; 9. Reel device. Detailed implementation mode

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] The first embodiment: As Figures 1-3 shown, the present invention provides a technical solution: A cage sampling device for fish resource investigation in deep-water reservoirs, including a floating body 1, a propeller 2 is fixedly connected to the side position of the floating body 1, an airbag 3 is fixedly connected to the position near the edge of the surface of the floating body 1, a lifting mechanism 4 is fixedly connected to the top of the floating body 1, a support plate 5 is fixedly connected to the bottom of the lifting mechanism 4, and further includes:

[0043] A sampling and collection mechanism 6, the sampling and collection mechanism 6 is fixedly installed at the middle position of the surface of the support plate 5, and the sampling and collection mechanism 6 is used for inducing fish in the deep aquaculture area, sampling and detecting, and stress-free releasing of fish after sampling;

[0044] A stabilizing assembly 7, the stabilizing assembly 7 is fixedly installed at the position near the edge of the top of the support plate 5, and the stabilizing assembly 7 is used for the stable connection between the support plate 5 and the bottom soil;

[0045] A reel device 9 is fixedly connected to the top of the floating body 1, and one end of the towing rope 8 far away from the opening and closing assembly 68 is fixedly installed on the surface of the reel device 9;

[0046] The lifting mechanism 4 includes a hoist 41 and a cylinder body 43. The bottom of the hoist 41 is fixedly installed on the top of the floating body 1. A screw rod 42 is connected to the inner side surface of the hoist 41 by threads. The cylinder body 43 is fixedly installed on the top of the support plate 5. A roller 44 is arranged between the bottom end of the screw rod 42 and the inner side surface of the cylinder body 43. The lifting mechanism 4 further includes a flared wall 45. The flared wall 45 is fixedly installed at a position on the bottom of the floating body 1 close to the hoist 41. The bottom of the flared wall 45 is fixedly connected with an anti-jamming component 46.

[0047] During use, the propeller 2 drives the floating body 1 to move randomly at the water surface position. The elastic buffer of the airbag 3 can prevent the floating body 1 from being damaged by rigid impact. When it is necessary to investigate the growth status of fish breeding underwater, the hoist 41 drives the screw rod 42 to rotate and move downward. The roller 44 enables the screw rod 42 and the cylinder body 43 to be rotationally connected. The support plate 5 is driven by the screw rod 42 to move close to the bottom of the water. The stabilizing component 7 extends into the internal part of the underwater soil, so that the whole device will not move under the impact of water flow. The bottom of the sampling and collection mechanism 6 contacts the bottom of the water. The fish enter the inside of the sampling and collection mechanism 6 under the attraction of food. After a period of time, the hoist 41 reverses to make the screw rod 42 rotate and move upward. The anti-jamming component 46 cleans the surface of the screw rod 42 to prevent sundries from jamming on the inner side surface of the hoist 41. The sampling and collection mechanism 6 carries the fish and water to a position above the floating body 1, solving the problem of how to sample the fish cultured in deep water areas to facilitate the observation of the growth status of the fish.

[0048] The second embodiment: As Figure 3 、 Figure 4 、 Figure 5 shown, the sampling and collection mechanism 6 includes a sampling cylinder 61. The bottom of the sampling cylinder 61 is fixedly installed at the middle position on the top of the support plate 5. An induction component 65 is sleeved on the surface of the sampling cylinder 61. A sealing sleeve body 62 is fixedly connected to the middle position of the inner side surface of the sampling cylinder 61. An opening tube 66 is fixedly connected to the upper position on the surface of the sealing sleeve body 62. An electromagnet 67 is fixedly connected to the bottom of the opening tube 66. An opening and closing component 68 is sleeved on the surface of the opening tube 66. A traction rope 8 is fixedly connected to the top of the opening and closing component 68. A winding device 9 is fixedly connected to the top of the floating body 1. One end of the traction rope 8 far away from the opening and closing component 68 is fixedly installed on the surface of the winding device 9;

[0049] A power supply device 69 is fixedly connected to the top of the inner side surface of the sealing sleeve body 62. A bottom shell 63 is fixedly connected to the position on the bottom of the support plate 5 close to the sampling cylinder 61. A pressure detector 64 is fixedly connected to the bottom of the sealing sleeve body 62.

[0050] During use, the floating body 1 floats on the water surface. The sampling cylinder 61 is opposite to the middle position of the surface of the floating body 1. When the screw 42 rotates and moves downward, the bottom of the bottom shell 63 directly contacts the bottom of the water. When the pressure detector 64 detects that the bottom shell 63 touches the bottom, the output end of the pressure detector 64 is electrically connected to the input end of the electromagnet 67. The electromagnet 67 is powered off, and the winding device 9 winds the towing rope 8. The opening and closing assembly 68 is pulled upward. The slotted tube 66 guides the movement of the opening and closing assembly 68. The sealing sleeve 62 seals and protects the power supply device 69 and the wire routing. The power supply device 69 supplies power to the electromagnet 67 and the pressure detector 64. The top of the sampling cylinder 61 is separated from the bottom of the opening and closing assembly 68. The induction assembly 65 contains food inside. The food overflows through the openings on the surface of the sampling cylinder 61. Fish enter the sampling cylinder 61 to forage. After a period of time, the sampling cylinder 61 is driven upward by the screw 42. The sampling cylinder 61 conveys part of the water and fish to the upper position of the floating body 1 at the same time, making the fish sampling efficiency higher.

[0051] Third Embodiment: As Figure 3 , Figure 6 shown, the induction assembly 65 includes an arc-shaped shell 651. An extension plate 652 is fixedly connected to the end face position of the arc-shaped shell 651. A tubular net 653 is clamped on the inner side surface of the arc-shaped shell 651. There are two arc-shaped shells 651. Bolts are connected to the surface of the extension plate 652 by threads. A drawstring 654 is fixedly connected to the end face position of the tubular net 653. The inner side surface of the arc-shaped shell 651 is in close contact with the position on the surface of the sampling cylinder 61 close to the opening.

[0052] The opening and closing assembly 68 includes an arc-shaped cover 681. An inner groove block 682 is fixedly connected to the inner side surface of the arc-shaped cover 681. The inner side surface of the inner groove block 682 is slidably connected to the surface of the slotted tube 66. A gravity roller 683 is fixedly connected to the bottom of the arc-shaped cover 681.

[0053] During use, extension plates 652 are arranged at the relative positions between the two arc-shaped shells 651. The bait is stuffed into the interior of the tubular net 653, and the two ends of the tubular net 653 are tightened by the drawstring 654. The arc-shaped shells 651 are fixedly installed at the opening positions of the sampling cylinder 61. The small holes on the surface of the tubular net 653 enable the bait to attract fish to forage. At the same time, due to the small aperture, the time for attracting fish is effectively increased, making the sampling efficiency of the sampling cylinder 61 for fish higher. The gravity rollers 683 increase the self-weight of the arc-shaped cover 681, and the uniformly arranged multiple gravity rollers 683 make the arc-shaped cover 681 move more stably up and down and not easily damaged by the impact of the water flow. When the bottom of the bottom shell 63 contacts the bottom of the water, the electromagnet 67 is powered off, and the retracting device 9 pulls the arc-shaped cover 681 upward by the towing rope 8. The bottom of the arc-shaped cover 681 is separated from the top of the sampling cylinder 61. The opening and closing of the arc-shaped cover 681 enable the fish to be released at a deep water position, solving the problem of how to avoid stress injuries to fish caused by the impact of water splashes during the sampling process.

[0054] Fourth Embodiment: As Figure 6 , Figure 7 , Figure 8 shown, the anti-jamming assembly 46 includes an internally threaded tube 461. The top of the internally threaded tube 461 is fixedly installed at the bottom of the flared wall 45. The inner side surface of the internally threaded tube 461 is in close contact with the surface of the screw rod 42. The anti-jamming assembly 46 further includes a guide slide 462. The inner side surface of the guide slide 462 is fixedly installed on the outer surface of the internally threaded tube 461. A slide bar 463 is slidably connected to the inner side surface of the guide slide 462, and a spiral piece 464 is fixedly connected to the surface of the slide bar 463;

[0055] An extension plate 652 is fixedly connected to the end face position of the arc-shaped shell 651. A tubular net 653 is clamped to the inner side surface of the arc-shaped shell 651. There are two arc-shaped shells 651. Bolts are connected to the surface of the extension plate 652 by threads. A drawstring 654 is fixedly connected to the end face position of the tubular net 653. The inner side surface of the arc-shaped shell 651 is in close contact with the surface of the sampling cylinder 61 near the opening;

[0056] An inner groove block 682 is fixedly connected to the inner side surface of the arc-shaped cover 681. The inner side surface of the inner groove block 682 is slidably connected to the surface of the slotted tube 66. Gravity rollers 683 are fixedly connected to the bottom of the arc-shaped cover 681.

[0057] During use, the inner side surface of the inner groove block 682 is in sliding connection with the surface of the slotted pipe 66. The inner groove block 682 is made of magnetic material. When the sampling cylinder 61 moves downward, the inner groove block 682 is attracted to the electromagnet 67 by magnetic force, and the arc-shaped shell 651 is pressed on the top of the sampling cylinder 61. The sampling cylinder 61 moves downward with the support plate 5. The electromagnet 67 is disconnected, and the traction rope 8 pulls the arc-shaped cover 681 upward, so that the fish inside the sampling cylinder 61 can be released underwater. During the sampling process, the sampling cylinder 61 is at the bottom of the water, and underwater sundries are likely to accumulate on the surface of the screw rod 42, and algae are also likely to deposit on the surface of the screw rod 42, causing the hoist 41 to fail. In this device, the inner side surface of the internal thread pipe 461 is in sliding connection with the surface of the screw rod 42. When the screw rod 42 rotates and moves upward, the sediment is scraped off by the internal thread pipe 461. The water flow easily drives the spiral blade 464 to rotate, and the sliding rod 463 slides on the inner side surface of the guide slide 462 under the drive of the spiral blade 464, so that the sundries accumulated near the internal thread pipe 461 are driven away, preventing the sampling cylinder 61 from being unable to sample normally.

[0058] The fifth embodiment is as Figure 8 , Figure 9 , Figure 10 shown, a tubular net 653 is clamped on the inner side surface of the arc-shaped shell 651. There are two arc-shaped shells 651. Bolts are connected to the surface of the extension plate 652 by threads. A drawstring 654 is fixedly connected to the end face position of the tubular net 653. The inner side surface of the arc-shaped shell 651 is in close contact with the surface of the sampling cylinder 61 near the opening;

[0059] An inner groove block 682 is fixedly connected to the inner side surface of the arc-shaped cover 681. The inner side surface of the inner groove block 682 is in sliding connection with the surface of the slotted pipe 66. A gravity roller 683 is fixedly connected to the bottom of the arc-shaped cover 681;

[0060] The stabilizing assembly 7 includes a bottom cylinder 71, which is fixedly installed on the top of the support plate 5. A connecting body 73 is threadedly and sealedly connected above the surface of the bottom cylinder 71. An installation pipe 75 is threadedly connected to the inner side surface of the connecting body 73. A protective strip 76 is fixedly connected to the top of the installation pipe 75. A pressure valve 74 is fixedly connected to the middle position of the surface of the connecting body 73. The stabilizing assembly 7 further includes a plunger rod 72, which is slidably installed on the inner side surface of the bottom cylinder 71. A drill bit 721 is fixedly connected to the bottom of the plunger rod 72. An air pump 78 is fixedly connected to the surface of the installation pipe 75. A rubber wall 77 is fixedly connected to the inner side surface of the installation pipe 75. A waterproof tape 79 is wound around the outer surface of the installation pipe 75.

[0061] During use, the bottom cylinder 71 is fixedly installed at the edge position on the top of the support plate 5. When the sampling cylinder 61 is above the floating body 1, the air pump 78 is above the water surface. The air pump 78 injects gas into the inside of the rubber wall 77. Due to the blockage of the pressure valve 74, the rubber wall 77 expands. After the support plate 5 moves downward, the position between the bottom of the plunger rod 72 and the bottom cylinder 71 is submerged in water, causing the plunger rod 72 to move upward. When the bottom shell 63 moves downward close to the bottom of the water, the fish pressed by the bottom of the bottom shell 63 can escape through the opening holes, thus avoiding the fish being pressed and injured. When the bottom shell 63 is in firm contact with the ground, the pressure valve 74 opens. The outside of the rubber wall 77 receives water pressure, and the gas inside the rubber wall 77 quickly rushes out under the dual action of elastic potential energy and water pressure. The top of the plunger rod 72 receives a rapid air pressure impact, and the water at the bottom of the plunger rod 72 is quickly discharged, causing the drill bit 721 to quickly insert into the bottom soil. When sampling relying on the bait inside the tubular net 653, the position of the sampling cylinder 61 is not easily drifted by the water flow and is more stable, and the fish are not easily frightened and escaped, making the sampling accuracy higher.

[0062] The sixth embodiment: As Figures 1-10 shown, a cage sampling method for fish resources investigation in deep water reservoirs includes the following steps:

[0063] Step 1, underwater positioning. The propeller 2 drives the floating body 1 to move randomly on the water surface. The elastic buffer of the airbag 3 can prevent the floating body 1 from being damaged by rigid impact. When it is necessary to investigate the growth status of fish breeding underwater, the hoist 41 drives the screw rod 42 to rotate and move downward. The roller 44 enables the screw rod 42 to be rotationally connected with the cylinder body 43. The support plate 5 is driven by the screw rod 42 to move close to the bottom of the water, and the stabilizing assembly 7 extends into the bottom soil, and the bottom of the sampling and collection mechanism 6 contacts the bottom of the water;

[0064] Step 2, opening the lid for sampling. When the pressure detector 64 detects that the bottom shell 63 touches the bottom, the output end of the pressure detector 64 is electrically connected to the input end of the electromagnet 67. The electromagnet 67 is powered off, and the winding device 9 winds up the towing rope 8. The opening and closing assembly 68 is pulled to move upward, and the slotted pipe 66 guides the movement of the opening and closing assembly 68. The top of the sampling cylinder 61 is separated from the bottom of the opening and closing assembly 68, and fish enter the sampling cylinder 61 to forage;

[0065] Step 3, inducing foraging. Extension plates 652 are arranged at the relative positions between the two arc-shaped shells 651. The bait is stuffed into the inside of the tubular net 653, and the two ends of the tubular net 653 are tightened by the drawstring 654. The arc-shaped shells 651 are fixedly installed at the opening positions of the sampling cylinder 61. The small holes on the surface of the tubular net 653 enable the bait to attract fish to forage. At the same time, due to the small aperture, the time for attracting fish is effectively increased, making the sampling efficiency of the sampling cylinder 61 for fish higher;

[0066] Step 4: Impurity removal and improvement. The sampling cylinder 61 is in the bottom position underwater. Debris underwater is likely to accumulate on the surface of the screw rod 42, and algae are also likely to deposit on the surface of the screw rod 42, causing the hoist 41 to fail. In this device, the inner side surface of the internal thread pipe 461 is slidably connected to the surface of the screw rod 42. When the screw rod 42 rotates and moves upward, the deposits are scraped off by the internal thread pipe 461. The water flow easily drives the spiral blade 464 to rotate, and the sliding rod 463 slides on the inner side surface of the guide slide 462 under the drive of the spiral blade 464, so that the debris accumulated near the internal thread pipe 461 is driven away.

[0067] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

Claims

1. A ground trap sampling device for deep-water reservoir fish resource survey, comprising a floating body (1), characterized in that: The side of the floating body (1) is fixedly connected to a propeller (2), the surface of the floating body (1) near the edge is fixedly connected to an air bag (3), the top of the floating body (1) is fixedly connected to a lifting mechanism (4), the bottom of the lifting mechanism (4) is fixedly connected to a support plate (5), and further comprises: A sampling and collecting mechanism (6), the sampling and collecting mechanism (6) is fixedly mounted at a middle position of the surface of the support plate (5), and the sampling and collecting mechanism (6) is used for induction, sampling and testing of fish in deep water aquaculture areas, and stress-free release of fish after sampling; A stabilizing component (7), wherein the stabilizing component (7) is fixedly mounted on the top of the support plate (5) near the edge, and the stabilizing component (7) is used for stabilizing the connection between the support plate (5) and the underwater soil; The sampling and collecting mechanism (6) comprises a sampling tube (61), the bottom of which is fixedly mounted at the middle position of the top of the support plate (5), the surface of which is sleeved with an induction component (65), the middle position of the inner side surface of the sampling tube (61) is fixedly connected with a sealing sleeve (62), the upper position of the surface of the sealing sleeve (62) is fixedly connected with a slotted tube (66), the bottom of the slotted tube (66) is fixedly connected with an electromagnet (67), the surface of the slotted tube (66) is sleeved with an opening and closing component (68), the top of the opening and closing component (68) is fixedly connected with a traction rope (8), the top of the floating body (1) is fixedly connected with a reeling device (9), and the end of the traction rope (8) away from the reeling device (9) is fixedly mounted on the surface of the reeling device (9).

2. The ground cage sampling device for deep-water reservoir fish resource survey according to claim 1, characterized in that: The top of the inner side of the sealing sleeve (62) is fixedly connected to a power supply device (69), the bottom of the support plate (5) near the sampling tube (61) is fixedly connected to a bottom shell (63), and the bottom of the sealing sleeve (62) is fixedly connected to a pressure detector (64).

3. The ground cage sampling device for deep-water reservoir fish resource survey according to claim 2, characterized in that: The induction component (65) comprises an arc-shaped shell (651), an end surface of the arc-shaped shell (651) is fixedly connected with an extension plate (652), and the inner side surface of the arc-shaped shell (651) is clamped with a tubular net (653).

4. The ground cage sampling device for deep-water reservoir fish resource survey according to claim 3 is characterized in that: There are two arc-shaped shells (651), the surface of the extension plate (652) is connected with bolts via threads, the end surface of the tubular net (653) is fixedly connected with a cinch band (654), and the inner side surface of the arc-shaped shell (651) is in close contact with the surface of the sampling tube (61) near the opening.

5. The ground cage sampling device for deep-water reservoir fish resource survey according to claim 4, characterized in that: The opening and closing assembly (68) comprises an arc-shaped cover (681), the inner side surface of the arc-shaped cover (681) is fixedly connected to an inner groove block (682), the inner side surface of the inner groove block (682) is slidably connected to the surface of the slotted tube (66), and the bottom of the arc-shaped cover (681) is fixedly connected to a gravity roller (683).

6. The ground trap sampling device for deep-water reservoir fish resource survey according to claim 5, characterized in that: The lifting mechanism (4) comprises a gate hoist (41) and a cylinder (43); the bottom of the gate hoist (41) is fixedly mounted on the top of the floating body (1); the inner side surface of the gate hoist (41) is connected to a screw rod (42) via a thread; the cylinder (43) is fixedly mounted on the top of the support plate (5); and a roller (44) is provided between the bottom end of the screw rod (42) and the inner side surface of the cylinder (43).

7. The ground trap sampling device for deep-water reservoir fish resource survey according to claim 6, characterized in that: The lifting mechanism (4) further comprises a flared wall (45), wherein the flared wall (45) is fixedly mounted at a position at the bottom of the floating body (1) close to the hoist (41), and an anti-jamming component (46) is fixedly connected to the bottom of the flared wall (45).

8. The ground trap sampling device for deep-water reservoir fish resource survey according to claim 7, characterized in that: The anti-jamming assembly (46) comprises an internally threaded tube (461), the top of which is fixedly mounted on the bottom of the flared wall (45), and the inner side surface of the internally threaded tube (461) is in close contact with the surface of the screw rod (42).

9. The ground trap sampling device for deep-water reservoir fish resource survey according to claim 8, characterized in that: The anti-jamming component (46) also includes a guide slide (462), the inner side surface of the guide slide (462) is fixedly mounted on the outer surface of the internal threaded tube (461), the inner side surface of the guide slide (462) is slidably connected to a sliding rod (463), and the surface of the sliding rod (463) is fixedly connected to a spiral sheet (464).

10. A sampling method for deep-water reservoir fish resource survey using the ground trap sampling device of claim 9, characterized in that: The following steps are involved: Step 1: Positioning after launching into water. The propeller (2) drives the floating body (1) to move randomly on the water surface. The elastic buffer of the airbag (3) can prevent the floating body (1) from being damaged by rigid impact. When it is necessary to investigate the growth status of underwater breeding fish, the hoist (41) drives the screw rod (42) to rotate and move downward. The roller (44) makes the screw rod (42) and the cylinder (43) rotatably connected. The support plate (5) is driven by the screw rod (42) to move close to the bottom of the water. The stabilizing component (7) extends to the inside of the bottom soil. The bottom of the sampling and collecting mechanism (6) contacts the bottom of the water. Step 2: Open the cover to take a sample. The pressure detector (64) detects that the bottom shell (63) has touched the bottom. The output end of the pressure detector (64) is electrically connected to the input end of the electromagnet (67). The electromagnet (67) is powered off. The reeling device (9) reels the traction rope (8). The opening and closing assembly (68) is pulled upward. The slotted tube (66) guides the opening and closing assembly (68) to move. The top of the sampling tube (61) is separated from the bottom of the opening and closing assembly (68), and the fish enter the sampling tube (61) to feed. Step 3: Induce foraging. An extension plate (652) is provided at a relative position between the two arc-shaped shells (651). The bait is inserted into the interior of the tubular net (653). The ends of the tubular net (653) are tightened by using a drawstring (654). The arc-shaped shell (651) is fixedly installed at the opening position of the sampling tube (61). The fine holes on the surface of the tubular net (653) enable the bait to attract fish foraging. At the same time, due to the small aperture, the time for attracting fish is effectively increased, so that the sampling efficiency of the sampling tube (61) for fish is higher. Step 4, remove debris and lift. The sampling tube (61) is at the bottom of the water. Underwater debris is easy to accumulate on the surface of the screw (42). Algae are also easy to deposit on the surface of the screw (42), causing the gate opening machine (41) to fail. In this device, the inner side of the internal threaded tube (461) is slidably connected to the surface of the screw (42). When the screw (42) rotates and moves upward, the sediment is scraped off by the internal threaded tube (461). The water flow easily drives the spiral blade (464) to rotate. The sliding rod (463) slides on the inner side of the guide slide (462) driven by the spiral blade (464), so that the debris accumulated near the internal threaded tube (461) is driven away.

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