A stationary bottom-sinking marine benthic organism trapping device

Abstract

The application discloses a static bottom-sinking type marine benthic organism trapping device, which comprises a cage net and a lifting traction mechanism for lifting the cage net, the cage net is composed of an upper annular closed rod, a lower annular closed rod and a plurality of supporting rods, the upper annular closed rod is located at the middle part of the lower annular closed rod, the plurality of supporting rods are located between the upper annular closed rod and the lower annular closed rod and are annularly and equidistantly distributed, the two ends of the supporting rods are connected with the upper annular closed rod and the lower annular closed rod respectively, and the bait diffusion mechanism is further included. The flowing seawater is used as a power source to drive the plurality of propellers to rotate, the propellers drive the driving shafts to rotate synchronously, the biological bait is diffused outward through the leakage holes, in the process, the seawater diffused outward is secondarily diffused at a long distance by using the flow guide opening, the nozzle, the flow collecting pipe, the rod cylinder, the pressing plug and the pressing rod, the uniformity of the biological bait diffusion is ensured, the utilization rate of the biological bait is improved, and the trapping effect is improved.

Description

Technical Field

[0001] The present invention relates to a trapping device, in particular to a stationary bottom-sinking marine benthic organism trapping device. Background Art

[0002] Surveys of marine benthic biological resources are an important part of marine ecological research, and biological samples are usually collected through methods such as bottom trawling and sediment collection. Traditional methods are convenient and fast, but are often limited by conditions such as the type of seabed substrate and the characteristics of benthic organisms. For example, bottom trawling cannot operate in reef areas, and sediment collection is generally used to collect shellfish samples. In addition, the sampling locations of traditional collection methods are prone to change, making it impossible to strictly collect samples at fixed locations year-round. Currently, there are relatively few benthic biological collection devices that have been developed, and most of them use capture methods, with very few using trapping methods. The single type of collection devices can no longer meet the needs of benthic biological resource surveys and research under complex offshore sea conditions.

[0003] The Chinese patent application publication number CN 103109783A discloses a marine life trapping device, comprising a float, a buoyancy airbag, and a trapping device; the float is connected to the upper part of the buoyancy airbag through an inflation tube, and the trapping device is arranged below the buoyancy airbag; the trapping device comprises an anti-escape net ring, a trap, a collection net bag, and a collection bag; the buoyancy airbag is fixedly connected to the loop at the upper end of the anti-escape net ring by a pull rope; the anti-escape net ring is cylindrical, open at both ends, and provided with loops at both ends; the trap is arranged in the anti-escape net ring, and the bottom of the trap is fixedly connected to the loop at the upper end of the anti-escape net ring by a pull rope; the anti-escape net ring is cylindrical, open at both ends, and provided with loops at both ends; the trap is arranged in the anti-escape net ring, and the bottom of the trap is fixedly connected to the anti-escape net ring. The outer edge of the surface is fixedly connected to the circle at the lower end of the anti-escape net circle; the collecting net bag is funnel-shaped, arranged below the trap, and fixedly connected to the outer edge of the lower bottom surface of the trap; the collecting bag is cylindrical, open at one end and closed at the other end, the open end of the collecting bag coincides with and is fixedly connected to the bottom of the collecting net bag, and a tether is provided at the closed end of the collecting bag. However, the device lacks a mechanism for diffusing the bait, so that the bait can only be diffused by water flow, and its diffusion distance is relatively short, the diffusion effect is uneven, and the utilization rate of the bait is reduced. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned problems existing in the prior art marine life trapping devices and provides a stationary bottom-sinking marine benthic life trapping device which can improve bait utilization and trapping effect.

[0005] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions: A stationary bottom-sinking marine benthic organism trapping device of the present invention comprises a cage net and a lifting and traction mechanism for lifting the cage net, wherein the cage net is composed of an upper annular closing rod, a lower annular closing rod and a plurality of support rods, the upper annular closing rod is located in the middle above the lower annular closing rod, and the plurality of support rods are located between the upper annular closing rod and the lower annular closing rod and are distributed in a circular shape with equal intervals, the two ends of the support rods are respectively connected to the upper annular closing rod and the lower annular closing rod, and also includes: a bait diffusion mechanism located in the middle of the cage net and used to store and diffuse biological bait, the bait diffusion mechanism includes a bait barrel and a barrel rack arranged in the middle of the lower surface of the bait barrel, and also includes a fixing plate located on the outer surface of each support rod, the fixing plate is connected to the support rod, the barrel rack is connected to the bait barrel, the outer surface of the bait barrel is penetrated by a plurality of leakage holes distributed in a circular shape with equal intervals, and the middle part of the bait barrel is rotatably installed with a drive shaft through a bearing. Among them, the counterweight ring is used to cooperate with the upper counterweight ring to stabilize the cage net so that the cage net can sink to the bottom. The lower mesh cover has the same structure as the upper mesh cover, and the position of the lower mesh cover corresponds to that of the upper mesh cover. Both sides of the outer surface of the upper annular closing rod are fixed with lifting ears.

[0006] Preferably, an upper counterweight ring is fixedly provided in the middle of the upper annular closing rod, and an upper mesh cover is installed on the inner surface of the upper counterweight ring, a lower counterweight ring is fixedly provided at the bottom of the lower annular closing rod, and a lower mesh cover is installed on the inner surface of the lower counterweight ring, an arc plate is fixedly provided at the bottom of the upper annular closing rod and located between two adjacent support rods, and a plurality of U-shaped joints are installed on the lower surface of the arc plate and are evenly spaced and distributed in an arc-shaped trajectory, and a one-way interception rod for one-way interception of marine life is provided inside the U-shaped joint through a rotating suspension shaft. The one-way interception rod is made of transparent glass, the bottom end of the one-way interception rod extends to the inner ring position of the lower annular closing rod, and the outer surface of the one-way interception rod contacts the outer surface of the lower annular closing rod, and the arc plate, U-shaped joint, suspension shaft and one-way interception rod are provided, so that seabed life can enter the cage net from all directions.

[0007] Preferably, the lifting and traction mechanism includes a crossbeam and a torsion transmission shaft rotatably mounted at the bottom of the crossbeam via a bearing, the outer end of the torsion transmission shaft being connected to the output end of the external drive member via a reducer, a reel being provided on both sides of the outer surface of the torsion transmission shaft, and the reel being slidably arranged with the torsion transmission shaft, a traction rope being wound around the outer surface of the reel, and ratchets being installed at both ends of the outer surface of the reel, a fixed rod being installed on the inner surface of the crossbeam, and ratchets being provided on the outer surface of the fixed rod and at each ratchet position, and the ratchets being elastically arranged with the fixed rod via a torsion spring, and the ratchets being slidably engaged with the ratchets. The two ends of the traction rope are respectively connected to the reel and the lifting lug, the ratchet being coaxial with the reel, a flat key being fixedly provided on the outer surface of the torsion transmission shaft, and a notch being provided inside the reel at the flat key position for cooperating with the flat key to stabilize the reel so that the reel can rotate synchronously with the torsion transmission shaft.

[0008] Preferably, a vertical rod is fixedly provided on the lower surface of the fixed plate, and the bottom end of the vertical rod passes through the drum rack, and the drum rack and the vertical rod are slidably provided, the bottom end of the drive shaft extends to the bottom of the bait drum, and the top end of the drive shaft extends to the inside of the bait drum, a first contact disc is fixedly provided in the middle of the bottom end of the drive shaft, and a second contact disc for lifting the first contact disc is provided in the middle below the first contact disc, the outer surface of the second contact disc and the position of each vertical rod are fixedly provided with a first connecting plate, and the two ends of the first connecting plate are respectively connected to the second contact disc and the vertical rod, the bottom of the first contact disc is provided with a plurality of first round heads distributed in an annular manner with equal spacing, and an arc surface is used to transition between adjacent two first round heads, the top of the second contact disc is provided with a plurality of second round heads distributed in an annular manner with equal spacing, and an arc surface is used to transition between adjacent two second round heads. Wherein, the positions of the first round head and the second round head are staggered, the first contact disc and the second contact disc rotate relative to each other, and a ring support is fixedly provided on the outer surface of the vertical rod and the position at the bottom end of the drum rack.

[0009] Preferably, the outer surface of the bottom of the drive shaft is fixedly mounted with multiple propellers distributed at equal intervals, the leakage hole is designed in a conical structure, a cylinder cover is rotatably mounted on the middle portion of the upper surface of the bait barrel via a cover shaft, and the upper surface of the cylinder cover is penetrated by multiple through holes distributed at equal intervals in an annular pattern, a mounting ring is mounted on the outer surface of the drive shaft and located inside the bait barrel, and multiple cutters distributed at equal intervals in an annular pattern are mounted on both sides of the outer surface of the mounting ring, and both ends of the cutters are provided with cutting edges. The large diameter of the leakage hole faces inward, and the small diameter faces outward. The through hole has the same specifications as the leakage hole, and the large diameter of the through hole faces downward, and the small diameter faces upward.

[0010] Preferably, the bait diffusion mechanism further includes a fixed plate arranged in the middle portion above the bait barrel, and a flow guide port fixedly arranged on the outer surface of the bait barrel and located at each leak hole position, a flow collecting tube fixedly arranged inside the flow guide port, and a plurality of nozzles distributed at equal intervals are arranged on the outer surface of the flow collecting tube, and the opening ends of the nozzles face outward, a rod barrel is fixedly arranged in the middle portion of the top end of the flow collecting tube, and a pressing plug is slidably arranged on the inner surface of the rod barrel, a pressing rod is arranged in the middle portion of the top end of the pressing plug, and the two ends of the pressing rod are respectively connected to the pressing plug and the fixed plate, the bottom end opening of the rod barrel is connected to the top end opening of the flow collecting tube, a second connecting plate is arranged on the outer surface of the fixed plate and located at each fixed plate position, and the two ends of the second connecting plate are respectively connected to the fixed plate and the fixed plate. The openings at both ends of the flow guide port are connected, the inner cavity of the flow collecting tube is connected to the inner cavity of the nozzle, and the second connecting plate is designed in an L-shaped structure.

[0011] Preferably, the bait diffusion mechanism further comprises a bait squeezing mechanism located within the bait barrel and configured to squeeze seawater mixed with the biological bait. The bait squeezing mechanism comprises a plurality of adsorption components distributed in an annular pattern at equal intervals, and a cam fixedly mounted on the outer surface of the drive shaft and configured to intermittently press each adsorption component. The outer surface of the cam protrusion is provided with a plurality of equally spaced notches, and a ball rod is disposed within the cam protrusion. A spherical member is rotatably disposed on the outer surface of the ball rod at each notch. The provision of the spherical member is configured to reduce friction at the joint and reduce the likelihood of jamming.

[0012] Preferably, the adsorption assembly includes a vertical plate installed at the bottom end of the inner surface of the bait tube, a guide rod is fixedly provided on the outer surface of the vertical plate and located on both sides of one end of the cam, and a sponge for adsorbing seawater mixed with biological bait is fixedly provided on the outer surface of the vertical plate and located on one side of the cam, a slider is slidably provided on the outer surface of the guide rod, and a positioning rod is provided between the two sliders, and a pressing wheel is rotatably provided in the middle of the outer surface of the positioning rod, and the spherical part and the pressing wheel are rollingly provided. The sponge is located between the two guide rods, and the pressing wheel is used to cooperate with the cam and the spherical part to squeeze the sponge, and rod supports for centering the pressing wheel are provided on both sides of the outer surface of the positioning rod, and the pressing wheel is located between the two rod supports.

[0013] Therefore, the present invention has the following beneficial effects: the flowing seawater is used as a power source to drive the rotation of multiple propellers, so that the propellers drive the drive shafts to rotate synchronously. At this time, the provided bait squeezing mechanism can be used to squeeze the seawater mixed with the biological bait, so that the biological bait diffuses outward through various leakage holes. During this period, the provided guide port, nozzle, flow collecting tube, rod barrel, pressing plug and pressing rod can be used to perform long-distance secondary diffusion of the seawater that diffuses outward, thereby ensuring the uniformity of the diffusion of the biological bait, improving the utilization rate of the biological bait, and improving the trapping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is an enlarged view of the local structure of the present invention Figure 1 .

[0016] Figure 3 It is a partial cross-sectional enlarged view of the present invention.

[0017] Figure 4 This is an enlarged view of the local structure of the present invention Figure 2 .

[0018] Figure 5 It is a side view of the local structure of the present invention.

[0019] Figure 6 This is a partial structural cross-sectional view of the present invention Figure 1 .

[0020] Figure 7 This is a partial structural cross-sectional view of the present invention Figure 2 .

[0021] In the figure: 100, cage net; 101, upper annular closing rod; 102, net cover; 103, upper counterweight ring; 104, lower annular closing rod; 105, lower counterweight ring; 106, lower net cover; 107, support rod; 108, curved plate; 109, U-shaped joint; 110, hanging shaft; 111, one-way intercepting rod; 200, lifting and traction mechanism; 201, crossbeam; 202, torque transmission shaft; 203, ratchet; 204, winding wheel; 205, traction rope; 206, fixing rod; 207, torsion spring; 208, ratchet; 300, bait diffusion mechanism; 301, bait drum; 302, drum rack; 303, vertical pole; 304, fixing plate; 30 5. First contact plate; 306. Second contact plate; 307. Drive shaft; 308. First connecting plate; 309. Fixed plate; 310. Second connecting plate; 311. Propeller; 312. Converging pipe; 313. Nozzle; 314. Rod barrel; 315. Barrel cover; 316. Cover shaft; 317. Pressing rod; 318. Diversion port; 319. Pressing plug; 320. Leakage hole; 321. Mounting ring; 322. Cutter; 400. Bait squeezing mechanism; 401. Vertical plate; 402. Positioning rod; 403. Sliding block; 404. Ball rod; 405. Cam; 406. Spherical part; 407. Guide rod; 408. Pressing wheel; 409. Sponge. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] See also Figure 1-7The present invention provides a technical solution: a static bottom-sinking marine benthic organism trapping device, comprising a cage net 100 and a lifting and traction mechanism 200 for lifting the cage net 100, wherein the lifting and traction mechanism 200 is located in the middle above the cage net 100, wherein the cage net 100 is composed of an upper annular closing rod 101, a lower annular closing rod 104 and a plurality of support rods 107, the upper annular closing rod 101 is located in the middle above the lower annular closing rod 104, the plurality of support rods 107 are located between the upper annular closing rod 101 and the lower annular closing rod 104 and are distributed in an annular shape with equal intervals, the two ends of the support rod 107 are respectively connected to the upper annular closing rod 101 and the lower annular closing rod 104, the middle of the upper annular closing rod 101 is fixedly provided with an upper counterweight ring 103, and the upper counterweight ring 103 is fixedly provided with an upper counterweight ring 103. The inner surface of the ring 103 is installed with a mesh cover 102, the bottom of the lower annular closing rod 104 is fixedly provided with a lower counterweight ring 105, and the inner surface of the lower counterweight ring 105 is installed with a lower mesh cover 106, which is used to cooperate with the mesh cover 102 to intercept marine life. The bottom of the upper annular closing rod 101 is fixedly provided with an arc plate 108 between two adjacent support rods 107, and the lower surface of the arc plate 108 is installed with multiple U-shaped joints 109 distributed at equal intervals in an arc-shaped trajectory, and the interior of the U-shaped joint 109 is rotated by a hanging shaft 110 to provide a one-way interception rod 111 for one-way interception of marine life. The device also includes: a bait diffusion mechanism 300 located in the middle of the cage net 100 and used to store and diffuse biological bait.

[0024] Specifically, the lifting and traction mechanism 200 includes a crossbeam 201 and a torque transmission shaft 202 rotatably mounted at the bottom of the crossbeam 201 through a bearing. The outer end of the torque transmission shaft 202 is connected to an external driving member, namely a motor, which is not shown and marked in the drawings of the specification. As a prior art, the output end, which is not described here, is connected and assembled through a reducer. Winding wheels 204 are provided on both sides of the outer surface of the torque transmission shaft 202, and the winding wheels 204 and the torque transmission shaft 202 are slidingly arranged to facilitate the staff to adjust the distance between the two winding wheels 204. A traction rope 205 is wound around the outer surface of the winding wheel 204, and ratchets 203 are installed at both ends of the outer surface of the winding wheel 204. A fixed rod 206 is installed on the inner surface of the crossbeam 201, and ratchets 208 are provided on the outer surface of the fixed rod 206 and at the position of each ratchet 203. The ratchet 208 and the fixed rod 206 are elastically arranged by a torsion spring 207, and the ratchet 208 is slidingly engaged with the ratchet 203.

[0025] Specifically, the bait diffusion mechanism 300 includes a bait barrel 301 and a barrel rack 302 arranged in the middle of the lower surface of the bait barrel 301, which is used to drive the set bait barrel 301 to rise and fall synchronously. It also includes a fixing plate 309 located on the outer surface of each support rod 107, the fixing plate 309 is connected to the support rod 107, and the barrel rack 302 is connected to the bait barrel 301. The lower surface of the fixing plate 309 is fixedly provided with a vertical rod 303 for guiding and supporting the barrel rack 302. The bottom end of the vertical rod 303 passes through the barrel rack 302, and the barrel rack 302 and the vertical rod 303 are slidably arranged. The middle part of the bait barrel 301 is rotatably installed with a drive shaft 307 through a bearing, and the bottom end of the drive shaft 307 extends to the bottom of the bait barrel 301, and the top end of the drive shaft 307 extends to the bottom of the bait barrel 301. To the inside of the bait barrel 301, a first contact disk 305 is fixedly provided in the middle of the bottom end of the drive shaft 307, and a second contact disk 306 for lifting the first contact disk 305 is provided in the middle below the first contact disk 305, and a first connecting plate 308 is fixedly provided on the outer surface of the second contact disk 306 and located at the position of each vertical rod 303, and the two ends of the first connecting plate 308 are respectively connected to the second contact disk 306 and the vertical rod 303, and a plurality of first round heads are provided at the bottom of the first contact disk 305 and are distributed in a ring-shaped and equidistant manner, and an arc surface is used to transition between two adjacent first round heads, and a plurality of second round heads are provided at the top of the second contact disk 306 and are distributed in a ring-shaped and equidistant manner, and an arc surface is used to transition between two adjacent second round heads.

[0026] Furthermore, a plurality of propellers 311 are fixedly installed on the outer surface of the bottom of the driving shaft 307 and are distributed at equal intervals. The flowing seawater will cause the propellers 311 to rotate and drive the driving shaft 307 to rotate synchronously. The outer surface of the bait barrel 301 is penetrated by a plurality of leakage holes 320 that are distributed in a circular shape and at equal intervals, and the leakage holes 320 are designed in a conical structure. A barrel cover 315 is rotated through the middle part of the upper surface of the bait barrel 301 by the cover shaft 316. The upper surface of the barrel cover 315 is penetrated by a plurality of through holes that are distributed in a circular shape and at equal intervals. A mounting ring 321 is provided on the outer surface of the driving shaft 307 and is located inside the bait barrel 301, and a plurality of cutting knives 322 that are distributed in a circular shape and at equal intervals are installed on both sides of the outer surface of the mounting ring 321 for chopping and stirring the biological bait. Both ends of the cutting knives 322 are provided with cutting edges.

[0027] Furthermore, the bait diffusion mechanism 300 also includes a fixed plate 304 arranged in the middle of the upper part of the bait barrel 301, and a guide port 318 fixedly arranged on the outer surface of the bait barrel 301 and located at the position of each leakage hole 320. A flow collecting tube 312 is fixedly arranged inside the guide port 318, and a plurality of nozzles 313 are arranged on the outer surface of the flow collecting tube 312 and are distributed at equal intervals, and the opening end of the nozzle 313 faces outward, and a rod barrel 314 is fixedly arranged in the middle of the top of the flow collecting tube 312, and the rod barrel 314 is fixedly arranged. A pressing plug 319 is slidingly provided on the inner surface for pressing water. A pressing rod 317 is provided in the middle of the top of the pressing plug 319, and the two ends of the pressing rod 317 are respectively connected to the pressing plug 319 and the fixed plate 304. The bottom end opening of the rod barrel 314 is connected to the top end opening of the flow collecting tube 312. A second connecting plate 310 is provided on the outer surface of the fixed plate 304 and at the position of each fixed plate 309, and the two ends of the second connecting plate 310 are respectively connected to the fixed plate 304 and the fixed plate 309.

[0028] In the device, the bait diffusion mechanism 300 also includes a bait squeezing mechanism 400 located inside the bait tube 301 and used to squeeze the seawater mixed with the biological bait. Specifically, the bait squeezing mechanism 400 includes a plurality of adsorption components distributed in an annular shape and at equal intervals, and a cam 405 fixedly mounted on the outer surface of the drive shaft 307 and used to intermittently press each adsorption component. The outer surface of the raised portion of the cam 405 is penetrated by a plurality of notches distributed in equal intervals, and the inner portion of the raised portion of the cam 405 is provided with a ball rod 404, and the outer surface of the ball rod 404 is provided with a plurality of notches rotatably located at each notch position. The spherical part 406, specifically, the adsorption component includes a vertical plate 401 installed at the bottom end of the inner surface of the bait barrel 301, and the outer surface of the vertical plate 401 and on both sides of one end of the cam 405 are fixedly provided with guide rods 407, and the outer surface of the vertical plate 401 and on one side of the cam 405 are fixedly provided with a sponge 409 for adsorbing seawater mixed with biological bait, a slider 403 is slidably provided on the outer surface of the guide rod 407, and a positioning rod 402 is provided between the two sliders 403, and a pressing wheel 408 is rotatably provided in the middle of the outer surface of the positioning rod 402, and the spherical part 406 and the pressing wheel 408 are rollingly provided.

[0029] According to the above, the present invention uses flowing seawater as a power source to drive multiple propellers 311 to rotate, so that the propellers 311 drive the drive shaft 307 to rotate synchronously. At this time, the provided bait squeezing mechanism 400 can be used to squeeze the seawater mixed with biological bait, so that the biological bait diffuses outward through each leakage hole 320. During this period, the provided guide port 318, nozzle 313, flow collecting tube 312, rod barrel 314, pressing plug 319 and pressing rod 317 can be used to perform long-distance secondary diffusion of the outward-diffusing seawater, thereby ensuring the uniformity of the diffusion of the biological bait, improving the utilization rate of the biological bait, and improving the trapping effect.

[0030] The embodiment described above is only a preferred solution of the present invention and does not limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solution described in the claims.

Claims

1. A static bottom-sinking marine benthic organism trapping device, comprising a cage net (100) and a lifting and traction mechanism (200) for lifting the cage net (100), characterized in that: The cage net (100) is composed of an upper annular closing rod (101), a lower annular closing rod (104) and a plurality of support rods (107). The upper annular closing rod (101) is located in the middle above the lower annular closing rod (104). The plurality of support rods (107) are located between the upper annular closing rod (101) and the lower annular closing rod (104) and are distributed in an annular shape with equal spacing. The two ends of the support rods (107) are respectively connected to the upper annular closing rod (101) and the lower annular closing rod (104). The cage net (100) is connected to a shaped closing rod (104), and further includes: a bait diffusion mechanism (300) located in the middle of the cage net (100) and used for storing and diffusing biological bait, the bait diffusion mechanism (300) including a bait barrel (301) and a barrel rack (302) arranged in the middle of the lower surface of the bait barrel (301), and further includes a fixing plate (309) located on the outer surface of each support rod (107), the fixing plate (309) being connected to the support rod (107), the barrel The frame (302) is connected to the bait barrel (301), and the outer surface of the bait barrel (301) is penetrated with a plurality of leakage holes (320) distributed in an annular manner with equal spacing. The middle part of the bait barrel (301) is rotatably mounted with a drive shaft (307) through a bearing; the outer surface of the bottom of the drive shaft (307) is fixedly mounted with a plurality of propellers (311) distributed in an equal spacing. The leakage holes (320) are designed in a conical structure. A cylinder cover (315) is rotatably provided in the middle of the surface through a cover shaft (316), and a plurality of through holes distributed in an annular shape and at equal intervals are formed through the upper surface of the cylinder cover (315), a mounting ring (321) is provided on the outer surface of the driving shaft (307) and located inside the bait cylinder (301), and a plurality of cutters (322) distributed in an annular shape and at equal intervals are installed on both sides of the outer surface of the mounting ring (321), and both ends of the cutter (322) are provided with a cutting edge; The bait diffusion mechanism (300) further includes a fixed plate (304) arranged in the middle of the upper part of the bait barrel (301), a flow guide (318) fixedly arranged on the outer surface of the bait barrel (301) and located at the position of each leakage hole (320), and a bait squeezing mechanism (400) located inside the bait barrel (301) and used for squeezing seawater mixed with biological bait, wherein a flow collecting tube (312) is fixedly arranged inside the flow guide (318), and a plurality of nozzles (313) distributed at equal intervals are arranged on the outer surface of the flow collecting tube (312), and the opening ends of the nozzles (313) face outwards, a rod barrel (314) is fixedly arranged in the middle of the top of the flow collecting tube (312), and a pressing plug (319) is slidably arranged on the inner surface of the rod barrel (314), a pressing rod (317) is arranged in the middle of the top of the pressing plug (319), and the two ends of the pressing rod (317) are respectively connected to the pressing plug. (319) is connected to the fixed plate (304), the bottom opening of the rod tube (314) is connected to the top opening of the flow collecting tube (312), the outer surface of the fixed plate (304) and each fixed plate (309) is provided with a second connecting plate (310), and the two ends of the second connecting plate (310) are respectively connected to the fixed plate (304) and the fixed plate (309); the bait squeezing mechanism (400) includes a plurality of adsorption components distributed in a circular shape with equal intervals, and a cam (405) fixedly mounted on the outer surface of the driving shaft (307) and used for intermittently pressing each adsorption component, the outer surface of the raised part of the cam (405) is penetrated by a plurality of notches distributed in equal intervals, and a ball rod (404) is provided inside the raised part of the cam (405), and a spherical part (406) is rotatably provided on the outer surface of the ball rod (404) and each notch position.

2. The static bottom-sinking marine benthic organism trapping device according to claim 1, characterized in that: An upper counterweight ring (103) is fixedly provided at the middle of the upper annular closing rod (101), and a mesh cover (102) is installed on the inner surface of the upper counterweight ring (103). A lower counterweight ring (105) is fixedly provided at the bottom of the lower annular closing rod (104), and a lower mesh cover (106) is installed on the inner surface of the lower counterweight ring (105). An arc plate (108) is fixedly provided at the bottom of the upper annular closing rod (101) and located between two adjacent support rods (107). A plurality of U-shaped joints (109) are installed on the lower surface of the arc plate (108) and are distributed at equal intervals in an arc-shaped trajectory. A one-way interception rod (111) for one-way interception of marine organisms is rotatably provided inside the U-shaped joint (109) via a suspension shaft (110).

3. The static bottom-sinking marine benthic organism trapping device according to claim 1, characterized in that: The lifting and traction mechanism (200) comprises a crossbeam (201), and a torsion transmission shaft (202) rotatably mounted on the bottom of the crossbeam (201) via a bearing, the outer end of the torsion transmission shaft (202) is connected and assembled with the output end of the external driving member via a reducer, and both sides of the outer surface of the torsion transmission shaft (202) are provided with a winding wheel (204), and the winding wheel (204) and the torsion transmission shaft (202) are slidably arranged, and the outer surface of the winding wheel (204) A traction rope (205) is wound around the wheel (204), ratchets (203) are installed at both ends of the outer surface of the wheel (204), a fixing rod (206) is installed on the inner surface of the crossbeam (201), and ratchets (208) are provided on the outer surface of the fixing rod (206) and at the positions of each ratchet (203), and the ratchets (208) and the fixing rod (206) are elastically arranged through a torsion spring (207), and the ratchets (208) are slidably engaged with the ratchets (203).

4. The static bottom-sinking marine benthic organism trapping device according to claim 1, characterized in that: The lower surface of the fixed plate (309) is fixedly provided with a vertical rod (303), and the bottom end of the vertical rod (303) passes through the drum rack (302), and the drum rack (302) and the vertical rod (303) are slidably provided, the bottom end of the driving shaft (307) extends to the bottom of the bait drum (301), and the top end of the driving shaft (307) extends to the inside of the bait drum (301), the middle part of the bottom end of the driving shaft (307) is fixedly provided with a first contact disk (305), and the middle part below the first contact disk (305) is provided with a second contact plate for lifting the first contact disk (305). The first contact plate (306) is provided with a first connecting plate (308) fixedly arranged on the outer surface of the second contact plate (306) and located at the position of each vertical pole (303), and the two ends of the first connecting plate (308) are respectively connected to the second contact plate (306) and the vertical pole (303), the bottom of the first contact plate (305) is provided with a plurality of first round heads distributed in an annular shape with equal intervals, and an arc surface is used to transition between two adjacent first round heads, and the top of the second contact plate (306) is provided with a plurality of second round heads distributed in an annular shape with equal intervals, and an arc surface is used to transition between two adjacent second round heads.

5. The static bottom-sinking marine benthic organism trapping device according to claim 1, characterized in that: The adsorption component includes a vertical plate (401) installed at the bottom end of the inner surface of the bait tube (301), a guide rod (407) is fixedly provided on the outer surface of the vertical plate (401) and on both sides of one end of the cam (405), and a sponge (409) for adsorbing seawater mixed with biological bait is fixedly provided on the outer surface of the vertical plate (401) and on one side of the cam (405), a slider (403) is slidably provided on the outer surface of the guide rod (407), and a positioning rod (402) is provided between the two sliders (403), and a pressing wheel (408) is rotatably provided in the middle of the outer surface of the positioning rod (402), and the spherical member (406) and the pressing wheel (408) are rollingly provided.

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