A deep-sea long column sampler with waterproof grass winding mechanism

Abstract

The application discloses a deep-sea long-column sampler with a waterproof grass winding mechanism, which comprises a main body, the outer surface of the periphery of the main body is provided with a folding frame, the bottom end outer surface of the folding frame is provided with a movable seat, the top end outer surface of the movable seat is fixedly connected with a shock-absorbing seat, and the outer surface of one side of the movable seat is provided with a limiting buckle. The folding frame can make the columnar sampler vertically fall when falling in seawater. When the main body passes above the water grass, the water grass can be cut by the rotary grinding blade, so that the water grass cannot wind the main body. The limiting of the limiting buckle can separate the first connecting rod from the second connecting rod, so that the folding frame and the movable seat can be folded, the transportation and storage of the main body are facilitated, the practicability and the innovation of the device are greatly improved, and the water grass winding problem of the columnar sampler is effectively prevented.

Description

Technical Field

[0001] This invention relates to the field of marine engineering technology, specifically to a deep-sea long columnar sampler with a waterproof weed-wrapping mechanism. Background Technology

[0002] A columnar sampler, also known as a columnar sampling tube, is a tool for collecting columnar samples of seabed sediments. The sampling tube is lined with a liner to prevent the sample from being disturbed during sampling. Depending on the power source used, they can be classified as gravity sampling tubes, water jet sampling tubes, shallow drills, vibrating piston samplers, burst sampling tubes, and water pressure sampling tubes, etc. In China, gravity sampling tubes or vibrating piston samplers are more commonly used.

[0003] In response, Chinese patent application number CN106813940A relates to marine underwater geological exploration sampling equipment, specifically a columnar sampler for seabed sediment exploration. The device includes a sealed container, a sampling tube, and a hydraulic power unit, a hydraulic cylinder, a connecting rod, and a tamping block, all installed within the sealed container. The upper end of the sealed container is a detachable sealed container cover, and the lower end is connected to the sampling tube. The hydraulic cylinder is connected to the hydraulic power unit and provides power to it. The connecting rod of the hydraulic cylinder is connected to the tamping block, which, driven by the hydraulic cylinder, reciprocates with the connecting rod, tamping the bottom of the sealed container. Two sealed chambers, A and B, are located on the outside of the sealed container. Chamber A contains a power source connected to the hydraulic power unit, providing power to its motor. Chamber B contains a remote acoustic signal transmitting device connected to a ground controller. This invention allows for complete, low-disturbance columnar geological sampling of sediments without damaging the natural marine soil layer. It is equipped with a sealed container, sampling tube and hydraulic power unit, which enables it to perform complete low-disturbance sediment column geological sampling without damaging the natural marine soil layer.

[0004] When current deep-sea cylindrical samplers are used to sample the bottom environment in the deep sea, there are often a lot of seaweed on the bottom, which makes it easy for the sampler to get entangled in the seaweed. Compared with the prior art, its outer surface is long and cylindrical and it does not have a seaweed anti-entanglement mechanism. When it sinks, it is easy for seaweed to get entangled. When the seaweed gets entangled on the outer surface of the sampler, it is easy for the sampler to be unable to sink further and cause the sampling position to be offset due to the seaweed entanglement, which seriously affects the efficiency of the sampling work.

[0005] In view of the above problems, there is an urgent need to propose a deep-sea long columnar sampler with a waterproof grass-wrapping mechanism to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a deep-sea long columnar sampler with a waterweed-proof anti-tangling mechanism, so as to solve the problem mentioned in the background art that the current deep-sea long columnar sampler does not have a waterweed-proof anti-tangling mechanism, which makes it easy for the deep-sea long columnar sampler to be tangled by waterweeds during sampling.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a deep-sea long cylindrical sampler with a waterproof weed-wrapping mechanism, comprising a main body, a folding frame disposed on the outer surface of the main body, a movable seat mounted on the bottom outer surface of the folding frame, a shock-absorbing seat fixedly connected to the top outer surface of the movable seat, a limiting buckle inserted into one side outer surface of the movable seat, a sample tube disposed on the top outer surface of the shock-absorbing seat, a second mounting seat fixedly connected to the upper outer surface of the sample tube, a load-bearing seat mounted above the second mounting seat, a telescopic buckle disposed above the load-bearing seat, a lifting ring fixedly connected to the top outer surface of the telescopic buckle, the folding frame including a first connecting rod disposed on the outer surface of the limiting buckle, a first sliding buckle sleeved on the outer surface of the first connecting rod, the first connecting rod... The top of the connecting rod is provided with a first movable shaft, the inner surface of which is inserted with a fixed rod, and the outer surface of the fixed rod is fitted with a second sliding buckle. The bottom outer surface of the fixed rod is fixedly connected with a fastening seat, and the outer surface of the first sliding buckle is fixedly connected with a first movable rod. The fixed rod is fixedly connected to the top outer surface of the fastening seat by screws. The first connecting rod is rotatably connected to the first movable shaft, and both the first movable shaft and the second sliding buckle are slidably connected to the fixed rod. The first sliding buckle is slidably connected to the first connecting rod. There are four sets of both the first connecting rod and the fixed rod, and the fixed rods are all fixedly installed on the top outer surface of the fastening seat. The first movable rod is rotatably connected to the second sliding buckle, and the top of the fixed rod is fixedly installed on the outer surface of the second mounting base.

[0008] Preferably, the shock absorber includes a base plate, a fastening bolt is inserted into the upper outer surface of the base plate, a first mounting seat is fixedly connected to the top outer surface of the base plate, a sleeve is fixedly installed on the top outer surface of the first mounting seat, a first compression spring is sleeved on the outer surface of the sleeve, a telescopic rod is inserted into the inner surface of the sleeve, and a telescopic cylinder is sleeved on the outer surface of the first mounting seat.

[0009] Preferably, the base plate is fixedly installed on the top outer surface of the movable seat by fastening bolts, and two sets of fastening bolts are provided. The sleeve is fixedly connected to the top outer surface of the first mounting seat by screws. The top end of the telescopic rod is fixedly connected to the inner surface of the telescopic cylinder. The telescopic rod and the sleeve are slidably connected.

[0010] Preferably, the movable seat includes a second connecting rod, a grinding blade is installed inside the second connecting rod, a rotating shaft is installed on the outer surface of the bottom end of the second connecting rod, a fixed seat is provided above the rotating shaft, a sliding rod is fixedly connected to the outer surface of the top end of the fixed seat, a second movable shaft is sleeved on the outer surface of the sliding rod, and a second movable rod is fixedly connected to the outer surface of the second movable shaft.

[0011] Preferably, the grinding blade is fixedly mounted on the inner outer surface of the second connecting rod by screws, the second connecting rod is rotatably connected to the rotating shaft, the bottom end of the second movable rod is disposed on the outer surface of the second connecting rod, the second movable rod is slidably connected to the second connecting rod, and the second movable shaft is slidably connected to the slide rod.

[0012] Preferably, there are four sets of rotary grinding blades, all of which are horizontally and parallelly installed inside the second connecting rod. There are four sets of the second connecting rod, which are arranged in a crisscross pattern. The outer surface of the second connecting rod is a smooth circular structure.

[0013] Preferably, the limiting buckle includes a handle, a connecting plate is fixedly connected to the outer surface of one end of the handle, a telescopic rod is welded to the inner surface of the handle, a tension spring is sleeved on the outer surface of the bottom end of the telescopic rod, a second compression spring is fixedly connected to the outer surfaces of both ends of the telescopic rod, a rotating seat is installed on the left side of the telescopic rod, an insert rod is fixedly connected to the outer surface of one side of the connecting plate, and a slot is sleeved on the outer surface of the insert rod.

[0014] Preferably, the telescopic rod is fixedly connected to the outer surface of one side of the handle by screws, the handle is rotatably connected to the rotating seat, the rotating seat is fixedly installed on the outer surface of the second connecting rod by mounting bolts, the telescopic rod is slidably connected to the tension spring, and the second compression spring is provided with upper and lower sets.

[0015] Preferably, the load-bearing seat is fixedly installed on the top outer surface of the second mounting seat by mounting bolts. There are two sets of load-bearing seats, and the load-bearing seats are all located on the left and right sides of the second mounting seat. A connecting shaft is inserted into the outer surface of the telescopic buckle. The lifting ring is sleeved on the top outer surface of the telescopic buckle by bolts. The outer surface of the lifting ring is a circular metal through hole.

[0016] A deep-sea long column sampling method with a waterproof grass-wrapping mechanism: 1. First, after the folding frame is installed, the main body is placed in the sea. The folding frame allows the main body to fall vertically when it sinks. When the columnar sampler sinks to the seabed or is moved, the shock absorption of the first compression spring causes the telescopic rod and the sleeve to move in and out of the way. In turn, the telescopic cylinder elastically extends and retracts on the upper surface of the first mounting base.

[0017] 2. When the folding frame and movable seat need to be folded, pulling the handle causes the insertion rod to be elastically stretched through the second compression spring and tension spring, allowing the first connecting rod and the second connecting rod to extend and retract. The folding frame and movable seat can be folded and placed. After the folding frame is folded, the movable seat can be extended and retracted through the movement of the second connecting rod and the rotating shaft. The grinding blades are used to harvest the aquatic plants at the bottom of the main body when it sinks. When the columnar sampler sinks to the seabed or is transported, the shock absorption of the first compression spring allows the telescopic rod and the sleeve to extend and retract, thereby protecting the sample tube.

[0018] Compared with the prior art, the beneficial effects of the present invention are: The folding frame allows the columnar sampler to fall vertically in seawater. After passing over aquatic plants, the rotating blades cut the plants, preventing them from tangling. When the sampler needs to be stored and transported, the limiting buckle separates the first and second connecting rods. The folding and extending movements of the second and first movable rods allow the folding frame and movable base to fold, facilitating the transport and storage of the sampler. This greatly improves the practicality and innovation of the device and effectively prevents the columnar sampler from becoming entangled in aquatic plants. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 1 A front view of the structure of the folding frame; Figure 3 For the present invention Figure 1 Overall structural diagram of the folding frame; Figure 4 For the present invention Figure 1 A front view of the structure of the movable seat; Figure 5 For the present invention Figure 1 Top view of the structure of the movable seat; Figure 6 For the present invention Figure 1 A front view diagram of the structure of the middle limit buckle; Figure 7 For the present invention Figure 1 A side view of the structure of the middle shock absorber seat.

[0020] In the diagram: 1. Main body; 2. Folding frame; 201. First connecting rod; 202. First sliding buckle; 203. First movable shaft; 204. Fixed rod; 205. Second sliding buckle; 206. Fastening seat; 207. First movable rod; 3. Shock-absorbing seat; 301. Base plate; 302. Fastening bolt; 303. First mounting seat; 304. Sleeve; 305. First compression spring; 306. Telescopic rod; 307. Telescopic cylinder; 4. Movable seat; 401. Second 402. Connecting rod; 403. Grinding blade; 404. Rotating shaft; 405. Fixed seat; 406. Slide rod; 407. Second movable shaft; 408. Second movable rod; 5. Limit buckle; 501. Pull handle; 502. Connecting plate; 503. Telescopic rod; 504. Tension spring; 505. Second compression spring; 506. Rotating seat; 507. Insert rod; 508. Slot; 6. Sample tube; 7. Second mounting seat; 8. Load-bearing seat; 9. Telescopic buckle; 10. Lifting ring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-7 One embodiment provided by the present invention: A deep-sea long cylindrical sampler with a waterproof grass-wrapping mechanism includes a main body 1. A folding frame 2 is provided on the outer surfaces of the main body 1. A movable seat 4 is mounted on the bottom outer surface of the folding frame 2. A shock-absorbing seat 3 is fixedly connected to the top outer surface of the movable seat 4. A limiting buckle 5 is inserted into one side of the outer surface of the movable seat 4. A sample tube 6 is provided on the top outer surface of the shock-absorbing seat 3. A second mounting seat 7 is fixedly connected to the upper outer surface of the sample tube 6. A load-bearing seat 8 is mounted above the second mounting seat 7. An extension is provided above the load-bearing seat 8. The top outer surface of the telescopic buckle 9 is fixedly connected to a hanging ring 10. The folding frame 2 includes a first connecting rod 201, which is disposed around the outer surface of the limiting buckle 5. A first sliding buckle 202 is sleeved on the outer surface of the first connecting rod 201. A first movable shaft 203 is provided at the top of the first connecting rod 201. A fixing rod 204 is inserted into the inner surface of the first movable shaft 203. A second sliding buckle 205 is sleeved on the outer surface of the fixing rod 204. A fastener is fixedly connected to the bottom outer surface of the fixing rod 204. A first movable rod 207 is fixedly connected to the outer surface of the base 206 and the first sliding buckle 202. A fixed rod 204 is fixedly connected to the top outer surface of the base 206 by screws. A first connecting rod 201 is rotatably connected to a first movable shaft 203. Both the first movable shaft 203 and the second sliding buckle 205 are slidably connected to the fixed rod 204. The first sliding buckle 202 is slidably connected to the first connecting rod 201. Both the first connecting rod 201 and the fixed rod 204... Four sets are provided, and the fixing rods 204 are all fixedly installed on the top outer surface of the fastening seat 206. The first movable rod 207 is rotatably connected to the second sliding buckle 205. The top of the fixing rod 204 is fixedly installed on the outer surface of the second mounting seat 7. After the folding frame 2 is installed, the main body 1 is placed in the sea. The folding frame 2 allows the main body 1 to fall vertically when it sinks, which effectively prevents the main body 1 from getting entangled in aquatic plants and effectively avoids the aquatic plants from getting entangled in the columnar sampler.

[0023] The shock absorber base 3 includes a base plate 301. Fastening bolts 302 are inserted into the upper outer surface of the base plate 301. A first mounting base 303 is fixedly connected to the top outer surface of the base plate 301. A sleeve 304 is fixedly mounted on the top outer surface of the first mounting base 303. A first compression spring 305 is sleeved on the outer surface of the sleeve 304. A telescopic rod 306 is inserted into the inner surface of the sleeve 304. A telescopic cylinder 307 is sleeved on the outer surface of the first mounting base 303. The base plate 301 is fixedly mounted on the top outer surface of the movable base 4 by fastening bolts 302. Two sets of fastening bolts 302 are provided. 04 is fixedly connected to the top outer surface of the first mounting base 303 by screws. The top of the telescopic rod 306 is fixedly connected to the inner surface of the telescopic cylinder 307. The telescopic rod 306 is slidably connected to the sleeve 304. When the columnar sampler sinks to the seabed or is moved, the shock absorption setting of the first compression spring 305 allows the telescopic rod 306 and the sleeve 304 to move in and out, thereby allowing the telescopic cylinder 307 to elastically extend and retract on the upper surface of the first mounting base 303, thereby protecting the sample tube 6 and preventing the sample tube 6 from being damaged by external forces at the bottom.

[0024] The movable seat 4 includes a second connecting rod 401, inside which a grinding blade 402 is installed. A rotating shaft 403 is installed on the outer surface of the bottom end of the second connecting rod 401. A fixed seat 404 is provided above the rotating shaft 403. A sliding rod 405 is fixedly connected to the outer surface of the top end of the fixed seat 404. A second movable shaft 406 is sleeved on the outer surface of the sliding rod 405. A second movable rod 407 is fixedly connected to the outer surface of the second movable shaft 406. The grinding blade 402 is fixedly installed on the inner outer surface of the second connecting rod 401 by screws. The second connecting rod 401 is rotatably connected to the rotating shaft 403. The bottom end of the second movable rod 407 is located on the outer surface of the second connecting rod 401. The second movable rod 407 is slidably connected to the second connecting rod 401. The second movable shaft 406 is slidably connected to the sliding rod 405. Four sets of grinding blades 402 are provided. The second connecting rod 401 is installed horizontally and parallel inside. There are four sets of the second connecting rod 401, which are arranged in a cross pattern. The outer surface of the second connecting rod 401 is a smooth circular structure. When the columnar sampler needs to be transported or stored, it can be folded and placed by folding the folding frame 2 and the movable seat 4. The first connecting rod 201 can be folded by the telescopic movement of the first sliding buckle 202 and the second sliding buckle 205. After the folding frame 2 is folded, the movable seat 4 can be telescopically folded by the movement of the second connecting rod 401 and the rotating shaft 403. The setting of the grinding blade 402 can harvest the aquatic plants at the bottom of the main body 1 when it sinks, preventing the aquatic plants from entangled in the columnar sampler. This facilitates the retraction and placement of the folding frame 2 and the movable seat 4, making the whole unit more convenient for transportation and storage.

[0025] The limit buckle 5 includes a handle 501. A connecting plate 502 is fixedly connected to the outer surface of one end of the handle 501. A telescopic rod 503 is welded to the inner surface of the handle 501. A tension spring 504 is sleeved on the outer surface of the bottom end of the telescopic rod 503. Second compression springs 505 are fixedly connected to the outer surfaces of both ends of the telescopic rod 503. A rotating seat 506 is installed on the left side of the telescopic rod 503. An insert rod 507 is fixedly connected to the outer surface of one side of the connecting plate 502. A slot 508 is sleeved on the outer surface of the insert rod 507. The telescopic rod 503 is fixedly connected to the outer surface of one side of the handle 501 by screws. The handle 501 is rotatably connected to the rotating seat 506, which is fixed by mounting bolts. Installed on the outer surface of the second connecting rod 401, the telescopic rod 503 is slidably connected to the tension spring 504. The second compression spring 505 is provided in two sets, upper and lower. By engaging the insertion rod 507 with the slot 508, the second connecting rod 401 can be engaged with the first connecting rod 201. When it is necessary to fold the folding frame 2 and the movable seat 4, by pulling the handle 501, the insertion rod 507 can be elastically stretched through the second compression spring 505 and the tension spring 504. When the insertion rod 507 is disengaged from the outer surface of the slot 508, the first connecting rod 201 and the second connecting rod 401 can be folded and retracted through the rotation axis, thereby facilitating the folding of the columnar sampler.

[0026] The load-bearing seat 8 is fixedly installed on the top outer surface of the second mounting seat 7 by mounting bolts. There are two sets of load-bearing seats 8, and both load-bearing seats 8 are located on the left and right sides of the second mounting seat 7. The outer surface of the telescopic buckle 9 is inserted with a connecting shaft. The lifting ring 10 is bolted to the top outer surface of the telescopic buckle 9. The outer surface of the lifting ring 10 is a circular metal through hole. The main body 1 can be lowered in seawater through the load-bearing seat 8, and the main body 1 can be moved and controlled through the lifting ring 10.

[0027] A deep-sea long column sampling method with a waterproof grass-wrapping mechanism: 1. First, after the folding frame 2 is installed, the main body 1 is placed in the sea. The folding frame 2 makes the main body 1 fall vertically when it sinks. When the columnar sampler sinks to the seabed or is moved, the shock absorption setting of the first compression spring 305 causes the telescopic rod 306 and the sleeve 304 to move in and out. Then, the telescopic cylinder 307 elastically extends and retracts on the upper surface of the first mounting base 303.

[0028] 2. When the folding frame 2 and the movable seat 4 need to be folded, the pull handle 501 is pulled to make the insertion rod 507 elastically stretched through the second compression spring 505 and the tension spring 504, so that the first connecting rod 201 and the second connecting rod 401 can move in and out. The folding frame 2 and the movable seat 4 can be folded and placed. After the folding frame 2 is folded, the movable seat 4 can be moved in and out through the movement of the second connecting rod 401 and the rotating shaft 403. The grinding blade 402 is set to harvest the aquatic plants at the bottom of the main body 1 when it sinks. When the columnar sampler sinks to the seabed or is transported, the shock absorption setting of the first compression spring 305 allows the telescopic rod 306 and the sleeve 304 to move in and out, thereby protecting the sample tube 6.

[0029] Working principle: After the folding frame 2 is installed, the main body 1 is placed in the sea. The folding frame 2 allows the main body 1 to fall vertically when it sinks. When the columnar sampler sinks to the seabed or is moved, the shock absorption of the first compression spring 305 allows the telescopic rod 306 and the sleeve 304 to move in and out, thereby allowing the telescopic cylinder 307 to elastically extend and retract on the upper surface of the first mounting base 303.

[0030] Furthermore, when the folding frame 2 and the movable seat 4 need to be folded, the pull handle 501 allows the insertion rod 507 to be elastically stretched through the second compression spring 505 and the tension spring 504, enabling the first connecting rod 201 and the second connecting rod 401 to extend and retract. The folding frame 2 and the movable seat 4 can be folded and placed. After the folding frame 2 is folded, the movement of the second connecting rod 401 and the rotating shaft 403 allows the movable seat 4 to extend and retract. The rotary grinding blade 402 can harvest the aquatic plants at the bottom of the main body 1 when it sinks. When the columnar sampler sinks to the seabed or is transported, the shock absorption of the first compression spring 305 allows the telescopic rod 306 and the sleeve 304 to extend and retract, thereby protecting the sample tube 6.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A deep-sea long cylindrical sampler with a waterproof grass-wrapping mechanism, comprising a main body (1), characterized in that: The outer surface of the main body (1) is provided with a folding frame (2). A movable seat (4) is installed on the bottom outer surface of the folding frame (2). A shock-absorbing seat (3) is fixedly connected to the top outer surface of the movable seat (4). A limit buckle (5) is inserted into one side outer surface of the movable seat (4). A sample tube (6) is provided on the top outer surface of the shock-absorbing seat (3). A second mounting seat (7) is fixedly connected to the upper outer surface of the sample tube (6). A load-bearing seat (8) is installed above the second mounting seat (7). (8) is provided with a telescopic buckle (9) above it. A hanging ring (10) is fixedly connected to the top outer surface of the telescopic buckle (9). The folding frame (2) includes a first connecting rod (201). The first connecting rod (201) is provided on the outer surface of the limiting buckle (5). A first sliding buckle (202) is sleeved on the outer surface of the first connecting rod (201). A first movable shaft (203) is provided at the top of the first connecting rod (201). A fixing rod (204) is inserted into the inner surface of the first movable shaft (203). The outer surface of the fixed rod (204) is fitted with a second sliding buckle (205). A fastening seat (206) is fixedly connected to the bottom outer surface of the fixed rod (204). A first movable rod (207) is fixedly connected to the outer surface of the first sliding buckle (202). The fixed rod (204) is fixedly connected to the top outer surface of the fastening seat (206) by screws. The first connecting rod (201) is rotatably connected to the first movable shaft (203). The first movable shaft (203) and the second sliding buckle (205) are both connected to the fixed rod (204). 04) Sliding connection, the first sliding buckle (202) is slidably connected to the first connecting rod (201), the first sliding buckle (202) is slidably connected to the first connecting rod (201), the first connecting rod (201) and the fixing rod (204) are both provided with four sets, and the fixing rod (204) is fixedly installed on the outer surface of the top end of the fastening seat (206), the first movable rod (207) is rotatably connected to the second sliding buckle (205), and the top end of the fixing rod (204) is fixedly installed on the outer surface of the second mounting seat (7).

2. A deep-sea long columnar sampler with a waterproof grass-wrapping mechanism according to claim 1, characterized in that: The shock absorber seat (3) includes a base plate (301), a fastening bolt (302) is inserted into the upper outer surface of the base plate (301), a first mounting seat (303) is fixedly connected to the top outer surface of the base plate (301), a sleeve (304) is fixedly installed on the top outer surface of the first mounting seat (303), a first compression spring (305) is sleeved on the outer surface of the sleeve (304), a telescopic rod (306) is inserted into the inner surface of the sleeve (304), and a telescopic cylinder (307) is sleeved on the outer surface of the first mounting seat (303).

3. A deep-sea long columnar sampler with a waterproof grass-wrapping mechanism according to claim 2, characterized in that: The base plate (301) is fixedly installed on the top outer surface of the movable seat (4) by fastening bolts (302). Two sets of fastening bolts (302) are provided. The sleeve (304) is fixedly connected to the top outer surface of the first mounting seat (303) by screws. The top of the telescopic rod (306) is fixedly connected to the inner surface of the telescopic cylinder (307). The telescopic rod (306) and the sleeve (304) are slidably connected.

4. A deep-sea long columnar sampler with a waterproof grass-wrapping mechanism according to claim 1, characterized in that: The movable seat (4) includes a second connecting rod (401), a grinding blade (402) is installed inside the second connecting rod (401), a rotating shaft (403) is installed on the outer surface of the bottom end of the second connecting rod (401), a fixed seat (404) is provided above the rotating shaft (403), a slide rod (405) is fixedly connected to the outer surface of the top end of the fixed seat (404), a second movable shaft (406) is sleeved on the outer surface of the slide rod (405), and a second movable rod (407) is fixedly connected to the outer surface of the second movable shaft (406).

5. A deep-sea long columnar sampler with a waterproof grass-wrapping mechanism according to claim 4, characterized in that: The grinding blade (402) is fixedly installed on the inner outer surface of the second connecting rod (401) by screws. The second connecting rod (401) is rotatably connected to the rotating shaft (403). The bottom end of the second movable rod (407) is set on the outer surface of the second connecting rod (401). The second movable rod (407) is slidably connected to the second connecting rod (401). The second movable shaft (406) is slidably connected to the slide rod (405).

6. A deep-sea long columnar sampler with a waterproof grass-wrapping mechanism according to claim 4, characterized in that: The grinding blades (402) are provided in four sets. The grinding blades (402) are all horizontally and parallelly installed inside the second connecting rod (401). The second connecting rod (401) is provided in four sets and is arranged in a cross pattern. The outer surface of the second connecting rod (401) is a smooth circular structure.

7. A deep-sea long columnar sampler with a waterproof grass-wrapping mechanism according to claim 1, characterized in that: The limiting buckle (5) includes a handle (501), a connecting plate (502) is fixedly connected to the outer surface of one end of the handle (501), a telescopic rod (503) is welded to the inner surface of the handle (501), a tension spring (504) is sleeved on the outer surface of the bottom end of the telescopic rod (503), a second compression spring (505) is fixedly connected to the outer surfaces of both ends of the telescopic rod (503), a rotating seat (506) is installed on the left side of the telescopic rod (503), a plug rod (507) is fixedly connected to the outer surface of one side of the connecting plate (502), and a slot (508) is sleeved on the outer surface of the plug rod (507).

8. A deep-sea long columnar sampler with a waterproof grass-wrapping mechanism according to claim 7, characterized in that: The telescopic rod (503) is fixedly connected to the outer surface of one side of the handle (501) by screws. The handle (501) is rotatably connected to the rotating seat (506). The rotating seat (506) is fixedly installed on the outer surface of the second connecting rod (401) by mounting bolts. The telescopic rod (503) is slidably connected to the tension spring (504). The second compression spring (505) is provided with upper and lower sets.

9. A deep-sea long columnar sampler with a waterproof grass-wrapping mechanism according to claim 1, characterized in that: The load-bearing seat (8) is fixedly installed on the top outer surface of the second mounting seat (7) by mounting bolts. There are two sets of load-bearing seats (8), and the load-bearing seats (8) are all located on the left and right sides of the second mounting seat (7). The outer surface of the telescopic buckle (9) is inserted with a connecting shaft. The lifting ring (10) is sleeved on the top outer surface of the telescopic buckle (9) by bolts. The outer surface of the lifting ring (10) is a circular metal through hole.

10. A deep-sea long columnar sampling method with a waterproof grass-wrapping mechanism according to claim 1, characterized in that: The steps are as follows: S1: First, after the folding frame (2) is installed, the main body (1) is placed in the sea. The folding frame (2) makes the main body (1) fall vertically when it sinks. When the column sampler sinks to the seabed or is transported, the first compression spring (305) makes the telescopic rod (306) and the sleeve (304) move in and out through the shock absorption setting. Then the telescopic cylinder (307) elastically extends and retracts on the upper surface of the first mounting base (303). S2: When the folding frame (2) and the movable seat (4) need to be folded, the plug rod (507) is elastically stretched by pulling the handle (501) through the second compression spring (505) and the tension spring (504), so that the first connecting rod (201) and the second connecting rod (401) can move in and out. The folding frame (2) and the movable seat (4) can be folded and placed. After the folding frame (2) is folded, the movable seat (4) can be moved in and out by the movement of the second connecting rod (401) and the rotating shaft (403). The grinding blade (402) is set to harvest the aquatic plants at the bottom of the main body (1) when it sinks. When the column sampler sinks to the seabed or is transported, the shock absorption setting of the first compression spring (305) allows the telescopic rod (306) and the sleeve (304) to move in and out, thereby protecting the sample tube (6).

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