Static sinking type marine benthos trapping device

Abstract

The invention discloses a static sinking type marine benthos trapping device which comprises a cage net and a lifting traction mechanism used for lifting the cage net, the cage net is composed of an upper annular closing rod, a lower annular closing rod and a plurality of supporting rods, and the upper annular closing rod is located in the middle of the upper portion of the lower annular closing rod; the multiple supporting rods are located between the upper annular closing rod and the lower annular closing rod and annularly distributed at equal intervals, and the two ends of each supporting rod are connected with the upper annular closing rod and the lower annular closing rod correspondingly. Flowing seawater is used as a power source to push a plurality of propellers to rotate, so that the propellers drive a driving shaft to rotate synchronously, biological baits are diffused outwards through all leaking holes, and during the period, a flow guide opening, a nozzle, a flow gathering pipe, a rod barrel, a pressing plug and a pressing rod are arranged to conduct long-distance secondary diffusion on the seawater diffused outwards, so that the biological baits are diffused outwards. The uniformity of diffusion of the biological bait is guaranteed, the utilization rate of the biological bait is increased, and the trapping effect is improved.

Description

Technical Field

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

[0002] The investigation of marine benthic biological resources is an important part of marine ecological research. Biological samples are usually collected by 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 be used 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, and it is impossible to strictly collect samples at fixed points throughout the year. At present, there are few benthic biological collection devices that have been developed, and most of them use capture methods, and rarely use trapping methods. The single type of collection devices can no longer meet the needs of benthic biological resource investigation and research under complex offshore conditions.

[0003] The Chinese patent application with the publication number CN 103109783A discloses a marine life trapping device, including 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 includes an anti-escape net ring, a trapper, a collection net bag, and a collection bag; the buoyancy airbag is fixedly connected to the ring at the upper end of the anti-escape net ring through a pull rope; the anti-escape net ring is cylindrical, open at both ends, and rings are arranged at both ends; the trapper is arranged in the anti-escape net ring, and the lower bottom of the trapper is fixedly connected to ... 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, one end is open and the other end is closed, 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 the bait can only be diffused by water flow, the diffusion distance is 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 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 purpose, the present invention adopts the following technical scheme: 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, 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, 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 spacing, the two ends of the support rod are respectively connected to the upper annular closing rod and the lower annular closing rod, and also comprises: a bait diffusion mechanism located in the middle of the cage net and used to store and diffuse biological bait, the bait diffusion mechanism comprises a bait barrel, and a barrel rack arranged in the middle of the lower surface of the bait barrel, and also comprises 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 with a plurality of leakage holes distributed in a circular shape with equal spacing, and a driving shaft is rotatably installed in the middle of the bait barrel 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 net cover has the same structure as the upper net cover, and the position of the lower net cover corresponds to that of the upper net cover. Lifting ears are fixed on both sides of the outer surface of the upper annular closing rod.

[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 track, and a one-way interception rod for one-way interception of marine life is provided inside the U-shaped joint through the rotation of the 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 circle 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 the 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 through a bearing, the outer end of the torsion transmission shaft is connected and assembled with the output end of the external driving member through a reducer, winding wheels are arranged on both sides of the outer surface of the torsion transmission shaft, and the winding wheels and the torsion transmission shaft are slidingly arranged, the outer surface of the winding wheel is wound with a traction rope, and ratchets are installed on both ends of the outer surface of the winding wheel, and a fixing rod is installed on the inner surface of the crossbeam, and ratchets are arranged on the outer surface of the fixing rod and at each ratchet position, and the ratchets and the fixing rod are elastically arranged through a torsion spring, and the ratchets are slidingly engaged with the ratchets. Wherein, the two ends of the traction rope are respectively connected to the winding wheel and the lifting lug, the ratchet wheel is coaxial with the winding wheel, the outer surface of the torsion transmission shaft is fixedly provided with a flat key, and a notch is provided inside the winding wheel and at the flat key position, which is used to cooperate with the flat key to stabilize the winding wheel so that the winding wheel 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 frame, and the drum frame and the vertical rod are slidably provided, the bottom end of the driving shaft extends to the bottom of the bait drum, and the top end of the driving shaft extends to the inside of the bait drum, a first contact disk is fixedly provided in the middle of the bottom end of the driving shaft, and a second contact disk for lifting the first contact disk is provided in the middle below the first contact disk, the outer surface of the second contact disk and the first connecting plate are fixedly provided at each vertical rod position, and the two ends of the first connecting plate are respectively connected to the second contact disk and the vertical rod, a plurality of first round heads are provided at the bottom of the first contact disk and are distributed in an annular manner with equal spacing, and an arc surface is used to transition between two adjacent first round heads, a plurality of second round heads are provided at the top of the second contact disk and are distributed in an annular manner with equal spacing, and an arc surface is used to transition between two adjacent second round heads. Wherein, the positions of the first round head and the second round head are staggered, the first contact disk and the second contact disk rotate relative to each other, and a ring support is fixedly provided on the outer surface of the vertical rod and at the bottom end of the drum frame.

[0009] Preferably, the outer surface of the bottom of the driving shaft is fixedly mounted with multiple propellers distributed at equal intervals, the leakage hole is designed in a conical structure, a tube cover is rotatably arranged in the middle of the upper surface of the bait barrel through a cover shaft, and the upper surface of the tube cover is penetrated with multiple through holes distributed at equal intervals in a ring shape, the outer surface of the driving shaft is provided with a mounting ring located inside the bait barrel, and multiple cutting knives distributed at equal intervals in a ring shape are installed on both sides of the outer surface of the mounting ring, and both ends of the cutting knives are provided with cutting edges. Among them, the large diameter of the leakage hole faces inwards, and the small diameter faces outwards, the through hole has the same specifications as the leakage hole, and the large diameter of the through hole faces downwards, and the small diameter faces upwards.

[0010] Preferably, the bait diffusion mechanism also includes a fixed plate arranged in the middle part above the bait barrel, and a flow guide port fixedly arranged on the outer surface of the bait barrel and located at each leakage hole position, a focusing tube is fixedly arranged inside the flow guide port, and a plurality of nozzles distributed at equal intervals are arranged on the outer surface of the focusing tube, and the opening ends of the nozzles face outward, a rod barrel is fixedly arranged in the middle part of the top of the focusing tube, and a pressing plug is slidably arranged on the inner surface of the rod barrel, a pressing rod is arranged in the middle part of the top 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 opening of the rod barrel is connected to the top opening of the focusing 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. Among them, the openings at both ends of the flow guide port are connected, the inner cavity of the focusing 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 inside the bait barrel and used to squeeze the seawater mixed with the biological bait, the bait squeezing mechanism comprises a plurality of adsorption components distributed in an annular shape and at equal intervals, and a cam fixedly mounted on the outer surface of the driving shaft and used to intermittently press each adsorption component, the outer surface of the cam protrusion is penetrated with a plurality of notches distributed in equal intervals, and a ball rod is arranged inside the cam protrusion, and a spherical piece is rotatably arranged on the outer surface of the ball rod and located at each notch position. The provision of the spherical piece is used to reduce the friction at the joint and reduce the possibility of jamming.

[0012] Preferably, the adsorption assembly includes a vertical plate installed at the bottom end of the inner surface of the bait tube, the outer surface of the vertical plate and both sides of one end of the cam are fixedly provided with guide rods, and the outer surface of the vertical plate and one side of the cam is fixedly provided with a sponge for adsorbing seawater mixed with biological bait, 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 arranged. 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 multiple propellers to rotate, 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 each leakage hole. During this period, the provided guide port, nozzle, focusing tube, rod barrel, pressing plug and pressing rod can be used to perform long-distance secondary diffusion of the seawater diffusing 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 It is a partial structural cross-sectional view of the present invention Figure 1 .

[0020] Figure 7 It 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, arc 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, fixed rod; 207, torsion spring; 208, ratchet; 300, bait diffusion mechanism; 301, bait drum; 302, drum rack; 303, vertical rod; 304, fixed 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. Focusing tube; 313. Nozzle; 314. Rod barrel; 315. Barrel cover; 316. Cover shaft; 317. Pressing rod; 318. Guide port; 319. Pressing plug; 320. Leak 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 is further described below in conjunction with 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, wherein the upper annular closing rod 101 is located in the middle above the lower annular closing rod 104, wherein 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 manner with equal spacing, wherein 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, wherein an upper counterweight ring 103 is fixedly arranged in the middle of the upper annular closing rod 101, and the upper counterweight ring 103 is fixedly arranged in the middle of the upper annular closing rod 101, and the upper counterweight ring 103 is fixedly arranged in the middle of the upper annular closing rod 101, and the upper counterweight ring 103 is fixedly arranged in the middle of the upper annular closing rod 104 ... An upper mesh cover 102 is installed on the inner surface of the ring 103, a lower counterweight ring 105 is fixedly installed 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, which is used to cooperate with the set mesh cover 102 to intercept marine life, an arc plate 108 is fixedly installed at the bottom of the upper annular closing rod 101 and between two adjacent support rods 107, and a plurality of U-shaped joints 109 are installed on the lower surface of the arc plate 108 and are evenly spaced and distributed in an arc-shaped trajectory, and a one-way interception rod 111 for one-way interception of marine life is rotatably arranged inside the U-shaped joint 109 through a hanging shaft 110. 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 installed 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 displayed and marked in the drawings of the specification. As a prior art, the output end that is not described here is connected and assembled through a reducer, and winding wheels 204 are arranged 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, and 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, and a fixed rod 206 is installed on the inner surface of the crossbeam 201, and ratchets 208 are arranged on the outer surface of the fixed rod 206 and at the positions of each ratchet 203, and 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, and 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, the barrel rack 302 is connected to the bait barrel 301, and a vertical rod 303 is fixedly arranged on the lower surface of the fixing plate 309, which is used to guide and support 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, and a driving shaft 307 is rotatably installed in the middle of the bait barrel 301 through a bearing, and the bottom end of the driving shaft 307 extends to the bottom of the bait barrel 301, and the top end of the driving shaft 307 extends To the inside of the bait barrel 301, a first contact plate 305 is fixedly provided in the middle of the bottom end of the driving shaft 307, and a second contact plate 306 for lifting the first contact plate 305 is provided in the middle below the first contact plate 305, and a first connecting plate 308 is fixedly provided on the outer surface of the second contact plate 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 plate 306 and the vertical rod 303, a plurality of first round heads are arranged at the bottom of the first contact plate 305 and are evenly spaced in a ring shape, and an arc surface is used to transition between two adjacent first round heads, and a plurality of second round heads are arranged at the top of the second contact plate 306 and are evenly spaced in a ring shape, 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 rotatably provided in the middle of the upper surface of the bait barrel 301 through a cover shaft 316. A plurality of through holes that are distributed in a circular shape and at equal intervals are penetrated on the upper surface of the barrel cover 315. A mounting ring 321 is provided on the outer surface of the driving shaft 307 and 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 focusing tube 312 is fixedly arranged inside the guide port 318, and a plurality of nozzles 313 are arranged on the outer surface of the focusing tube 312 and are distributed at equal intervals, and the opening ends of the nozzles 313 face outwards, and a rod tube 314 is fixedly arranged in the middle of the top of the focusing tube 312, and the rod tube 314 is fixedly arranged. A pressing plug 319 is slidably 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 opening of the rod tube 314 is connected to the top opening of the flow collecting tube 312, and 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 that are evenly spaced and annularly arranged, and a cam 405 that is fixedly mounted on the outer surface of the driving shaft 307 and is 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 that are evenly spaced, and a ball rod 404 is arranged inside the raised portion of the cam 405, and the outer surface of the ball rod 404 is rotatably arranged at each notch position. The spherical member 406, specifically, the adsorption component includes a vertical plate 401 installed at the bottom end of the inner surface of the bait tube 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 is 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 member 406 and the pressing wheel 408 are rollingly provided.

[0029] According to the above, the present invention utilizes 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 bait squeezing mechanism 400 provided 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 diversion port 318, nozzle 313, flow focusing tube 312, rod barrel 314, pressing plug 319 and pressing rod 317 provided can be used to perform long-distance secondary diffusion of the seawater diffusing 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 at the same time.

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

Claims

1. A stationary bottom-sinking marine benthic organism trapping device, comprising a cage net (100) and a lifting and traction mechanism (200) for lifting and lowering 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 supporting rods (107); the upper annular closing rod (101) is located in the middle above the lower annular closing rod (104); the plurality of supporting 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 supporting rod (107) are respectively connected to the upper annular closing rod (101) and the lower annular closing rod (104); and the cage net (100) further comprises: a bait container located in the middle of the cage net (100) and used for storing and diffusing biological bait; A bait diffusion mechanism (300), 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), and 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), the barrel rack (302) is connected to the bait barrel (301), the outer surface of the bait barrel (301) is penetrated by a plurality of leakage holes (320) distributed in an annular shape with equal intervals, and a driving shaft (307) is rotatably mounted in the middle of the bait barrel (301) through a bearing.

2. The static bottom-sinking marine benthic organism trapping device according to claim 1, characterized in that: An upper counterweight ring (103) is fixedly arranged in the middle of the upper annular closing rod (101), and a net cover (102) is installed on the inner surface of the upper counterweight ring (103); a lower counterweight ring (105) is fixedly arranged at the bottom of the lower annular closing rod (104), and a lower net cover (106) is installed on the inner surface of the lower counterweight ring (105); an arc plate (108) is fixedly arranged at the bottom of the upper annular closing rod (101) and located between two adjacent support rods (107), and 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, and a one-way interception rod (111) for one-way interception of marine organisms is rotatably arranged 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 torque transmission shaft (202) rotatably mounted on the bottom of the crossbeam (201) via a bearing, the outer end of the torque transmission shaft (202) being connected and assembled with the output end of an external driving member via a reducer, and winding wheels (204) are arranged 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 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 arranged 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 torsion springs (207), and the ratchets (208) are slidably meshed with the ratchets (203).

4. The static bottom-sinking marine benthic organism trapping device according to claim 1, characterized in that: A vertical rod (303) is fixedly arranged on the lower surface of the fixing plate (309), and the bottom end of the vertical rod (303) passes through the drum frame (302), and the drum frame (302) and the vertical rod (303) are slidably arranged, 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), and a first contact plate (305) is fixedly arranged in the middle of the bottom end of the driving shaft (307), and a second contact plate (305) for lifting the first contact plate (305) is arranged in the middle below the first contact plate (305). The first contact plate (306) is provided with a first connecting plate (308) fixedly disposed 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 spacing, 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 spacing, 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 outer surface of the bottom of the driving shaft (307) is fixedly mounted with a plurality of propellers (311) which are evenly spaced, the leakage hole (320) is designed in a conical structure, a tube cover (315) is rotatably arranged in the middle of the upper surface of the bait barrel (301) via a cover shaft (316), and the upper surface of the tube cover (315) is penetrated with a plurality of through holes which are evenly spaced in a ring shape, the outer surface of the driving shaft (307) is provided with a mounting ring (321) located inside the bait barrel (301), and a plurality of cutting knives (322) which are evenly spaced in a ring shape are installed on both sides of the outer surface of the mounting ring (321), and both ends of the cutting knives (322) are provided with cutting edges.

6. The static bottom-sinking marine benthic organism trapping device according to claim 1, characterized in that: The bait diffusion mechanism (300) further comprises a fixed plate (304) disposed in the middle of the upper part of the bait tube (301), and a flow guide port (318) fixedly disposed on the outer surface of the bait tube (301) and located at the position of each leakage hole (320), a flow collecting tube (312) fixedly disposed inside the flow guide port (318), and a plurality of nozzles (313) distributed at equal intervals are disposed on the outer surface of the flow collecting tube (312), and the opening ends of the nozzles (313) face outwards, and a rod tube (314) is fixedly disposed in the middle of the top end of the flow collecting tube (312), and the rod tube (31 4) is slidably provided with a pressing plug (319), 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 tube (314) is connected to the top end opening of the focusing tube (312), and 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).

7. The static bottom-sinking marine benthic organism trapping device according to claim 1, characterized in that: The bait diffusion mechanism (300) further comprises a bait squeezing mechanism (400) located inside the bait tube (301) and used for squeezing seawater mixed with biological bait, the bait squeezing mechanism (400) comprising 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 driving shaft (307) and used for intermittently pressing each adsorption component, the outer surface of the raised portion of the cam (405) being penetrated by a plurality of notches distributed in equal intervals, a ball rod (404) being arranged inside the raised portion of the cam (405), and a spherical member (406) being rotatably arranged on the outer surface of the ball rod (404) and located at each notch position.

8. The static bottom-sinking marine benthic organism trapping device according to claim 7, characterized in that: The adsorption component comprises a vertical plate (401) mounted at the bottom end of the inner surface of the bait tube (301), guide rods (407) are fixedly arranged 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 arranged on the outer surface of the vertical plate (401) and on one side of the cam (405), a slider (403) is slidably arranged on the outer surface of the guide rod (407), a positioning rod (402) is arranged between the two sliders (403), and a pressing wheel (408) is rotatably arranged in the middle of the outer surface of the positioning rod (402), and the spherical member (406) and the pressing wheel (408) are rollingly arranged.

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