Underwater sediment vibration sampling device and sampling method for deep sea bottom

Abstract

The invention relates to the technical field of underwater sampling, and discloses an underwater sediment vibration sampling device for a deep sea seabed, the underwater sediment vibration sampling device comprises an outer rack and a vibration sampling mechanism, the outer rack comprises a top cover, a base and a supporting column, the lower end of the top cover is equidistantly provided with mounting sleeves, the upper end of the supporting column is mounted in an inner cavity of the mounting sleeve, and the vibration sampling mechanism is arranged in the inner cavity of the mounting sleeve. The base comprises a bottom plate, insertion holes connected with the lower ends of the supporting columns in an inserted mode are formed in the upper end of the bottom plate at equal intervals, the lower portions of the outer sides of the supporting columns are welded to the bottom plate, the vibration sampling mechanism comprises a vibrator, a vibration head is installed at the lower end of the vibrator, and a bearing seat is installed at the lower end of the vibration head. Compared with the prior art, the device is reasonable in structural design and high in practicability, effectively enables a sampling pipe to rotate while moving downwards under high-frequency hammering vibration, effectively improves the efficiency of drilling of the sampling pipe into a stratum, and improves the quality of sampling operation.

Description

Technical Field

[0001] This invention relates to the field of underwater sampling technology, specifically to a vibration sampling device and method for underwater sediments on the deep seabed. Background Technology

[0002] In marine geological surveys, both gravity piston samplers and vibratory samplers are used to sample underwater sediments on the seabed. Gravity piston samplers rely on their own weight to generate impact force, causing the sampling tube to penetrate into the seabed sediments. This allows for deep-sea sampling at depths of several thousand meters. However, the equipment is limited by the weight of the sampler and is only suitable for conventional sediment sampling. Vibratory samplers, on the other hand, use high-frequency hammer vibration to penetrate the sampling tube into the sediments. This allows for sampling of dense sediments such as pure sand, ferruginous sand, and hard clay. Especially in soft, shallow overburden layers, vibratory sampling has advantages such as high vibration frequency, low single impact energy, and minimal disturbance to the sample.

[0003] However, when faced with complex strata on the deep seabed, such as iron plate sand and gravel, the traditional vibratory sampler only presses the sampling tube down with vibration, which is difficult to operate and results in poor sampling results. To address this problem, we provide a vibratory sampling device for underwater sediments on the deep seabed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a vibratory sampling device for underwater sediments on the deep seabed, which has advantages such as improving the efficiency of sampling tubes drilling into the formation and improving the quality of sampling operations.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vibration sampling device for underwater sediments on the deep seabed, comprising an outer frame and a vibration sampling mechanism, wherein the outer frame comprises a top cover, a base and a support column, wherein mounting sleeves are equidistantly installed at the lower end of the top cover, and the upper end of the support column is installed in the inner cavity of the mounting sleeve; The base includes a base plate, and the upper end of the base plate is provided with equidistant insertion holes for insertion into the lower end of the support column. The lower outer part of the support column is welded to the base plate. The vibration sampling mechanism includes a vibrator, a vibration head mounted on the lower end of the vibrator, a bearing seat mounted on the lower end of the vibration head, a support shaft rotatably connected to the inner cavity of the bearing seat, a sampling tube screwed to the lower end of the support shaft, a positioning component fixedly sleeved on the outer side of the vibration head, a rotating component jointly installed between the top cover and the bottom plate, and a displacement component meshing with the rotating component mounted on the outer side of the positioning component.

[0006] Furthermore, the positioning component includes two sets of sliding columns installed between the top cover and the bottom plate. Each sliding column has a sliding sleeve movably fitted on its outer side. Each sliding sleeve has a support block connected to its outer side. The two sets of support blocks have a support sleeve connected to their corresponding sides. The support sleeve is fixedly fitted onto the outer side of the vibrating head.

[0007] Furthermore, the displacement assembly includes a first connecting rod and a second connecting rod respectively installed on both sides of the support sleeve. A slider is connected to the outer side of the first connecting rod. Two sets of slide rails that slide in contact with the slider are installed between the top cover and the bottom plate. A T-shaped rod is installed on the outer side of the second connecting rod. Teeth are installed at equal intervals on one side of the T-shaped rod.

[0008] Furthermore, the rotating assembly includes a first support seat installed at the lower end of the top cover, a connecting shaft rotatably connected to the middle of the first support seat, a first sprocket mounted on the outer side of the connecting shaft, a second support seat installed at the upper end of the base plate, a drive shaft rotatably connected to the middle of the second support seat, a second sprocket mounted on the outer side of the drive shaft, a chain meshing between the second sprocket and the first sprocket, multiple sets of teeth meshing with the chain, a second bevel gear mounted on the outer side of the drive shaft, a sleeve installed at the middle of the upper end of the base plate, a mounting groove provided at the upper end of the sleeve, a bearing installed in the inner cavity of the mounting groove, a first bevel gear rotatably installed in the inner cavity of the bearing, the first bevel gear meshing with the second bevel gear, and two sets of limiting strips integrally connected to the inner cavity of the first bevel gear.

[0009] Furthermore, connecting frames are equidistantly installed on the outer side of the base plate, and an outer frame is installed on the outer side of multiple sets of connecting frames. Tripods are equidistantly welded on the outer side of the outer frame, and reinforcing rods are welded to the upper end of the tripods. Fixing sleeves are installed on the outer side of each support column, and the fixing sleeves are connected to the reinforcing rods.

[0010] Furthermore, a fixing frame is welded to the outer side of multiple sets of support columns.

[0011] Furthermore, a through hole is provided in the middle of the upper end of the base plate, and blades are equidistantly connected to the lower end of the sampling tube.

[0012] Furthermore, a chain link is installed at the upper end of the top cover.

[0013] The present invention also provides a method for underwater sediment vibration sampling on the deep seabed, comprising the following steps: S1. First, after the ship connects one end of the chain to the chain link, the sampling device is placed into the deep sea bottom by extending and extending the chain. S2. By starting the vibrator, the vibrator generates high-frequency hammering vibration through the vibrating head. Then, the vibrating head generates synchronous vibration on the bearing seat, support shaft and sampling tube, so that the blade at the lower end of the sampling tube is pressed down into the seabed sediment, and the sampling tube gradually enters the stratum to carry out sampling operations. S3. Then, the vibrating head drives the support sleeve and the second connecting rod to move down synchronously. The second connecting rod drives multiple teeth to move down through the T-shaped rod. The teeth drive the chain to rotate. The chain drives the second sprocket to mesh and rotate synchronously. The second sprocket drives the transmission shaft and the second bevel gear to rotate. The second bevel gear drives the first bevel gear to rotate. The limiting strip on the inner side of the first bevel gear drives the sampling tube to rotate synchronously. This allows the sampling tube to rotate while moving down under high-frequency hammer vibration, enabling the sampling tube to rotate and drill into the formation for sampling. S4. Subsequently, after the sampling tube has completed the sampling, the ship will use a chain to reel in the sampling device, which will then move the entire sampling device upwards away from the ocean, thus completing the seabed sediment sampling operation.

[0014] Compared with the prior art, the present invention provides a vibration sampling device and method for underwater sediments on the deep seabed, which has the following advantages: 1. This underwater sediment vibration sampling device for deep seabed uses a vibrator to generate high-frequency vibration. After the vibrator operates, the vibrator, vibrating head, and sampling tube vibrate and move downward synchronously. The sampling tube is pressed down into the seabed sediment for sampling. The vibrating head drives the displacement component to move downward, which in turn drives the rotating component to rotate. The second bevel gear of the rotating component drives the first bevel gear to rotate, and the limiting strip on the inner side of the first bevel gear drives the sampling tube to rotate synchronously. This allows the sampling tube to rotate while moving downward with high-frequency hammer vibration, effectively improving the efficiency of the sampling tube drilling into the formation and improving the quality of the sampling operation. 2. This underwater sediment vibration sampling device for deep seabed uses multiple connecting frames to connect the outer frame to the outside of the base plate, increasing the bottom load-bearing area of ​​the device and enhancing its support and stability. Furthermore, the tripod on the outside of the outer frame is connected to the fixing sleeve on the outside of the support column by reinforcing rods, further increasing the support strength of the outer frame. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the external frame of the present invention; Figure 3 This is a partial sectional three-dimensional structural diagram of the base of the present invention; Figure 4 This is a three-dimensional structural diagram of the vibration sampling mechanism of the present invention; Figure 5This is a top view schematic diagram of the vibration sampling mechanism of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of a portion of the vibration sampling mechanism of the present invention. Figure 7 This is a three-dimensional structural diagram of a portion of the rotating component of the present invention.

[0016] In the diagram: 1. Top cover; 2. Base; 21. Base plate; 22. Sleeve; 23. First bevel gear; 24. Connecting frame; 25. Outer frame; 26. Tripod; 27. Reinforcing rod; 28. Fixing sleeve; 29. ​​Insertion hole; 210. Through hole; 211. Mounting groove; 212. Bearing; 213. Limiting strip; 3. Mounting sleeve; 4. Support column; 5. Fixing frame; 6. Vibration sampling mechanism; 61. Vibrator; 62. Bearing seat; 63. Support shaft; 64. Sampling tube; 65. Rotating assembly; 651. First support 652. Support seat; 653. Connecting shaft; 654. First sprocket; 655. Chain; 656. Second support seat; 657. Drive shaft; 658. Second sprocket; 659. Second bevel gear; 60. Sliding column; 610. Sliding sleeve; 611. Support block; 612. Slide rail; 613. First connecting rod; 614. Sliding block; 615. Sliding tooth; 616. Limiting groove; 617. Blade; 618. Vibrating head; 7. Chain link. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] Please see Figure 1-7 A vibration sampling device for underwater sediments on the deep seabed includes an outer frame and a vibration sampling mechanism 6. The outer frame includes a top cover 1, a base 2 and a support column 4. The lower end of the top cover 1 is equidistantly equipped with mounting sleeves 3. The upper end of the support column 4 is installed in the inner cavity of the mounting sleeve 3. A chain link 7 is installed on the upper end of the top cover 1.

[0019] The base 2 includes a base plate 21. The upper end of the base plate 21 is provided with equidistant insertion holes 29 that are inserted into the lower end of the support column 4. The lower outer side of the support column 4 is welded to the base plate 21. Connecting brackets 24 are installed equidistantly on the outer side of the base plate 21. An outer frame 25 is installed on the outer side of multiple sets of connecting brackets 24. Tripods 26 are welded equidistantly on the outer side of the outer frame 25. A reinforcing rod 27 is welded to the upper end of the tripod 26. Fixing sleeves 28 are installed on the outer side of the support column 4. The fixing sleeves 28 are connected to the reinforcing rods 27. Fixing brackets 5 are welded on the outer side of multiple sets of support columns 4. A through hole 210 is provided in the middle of the upper end of the base plate 21.

[0020] After connecting one end of the chain to the link 7 via a ship, the device is lowered into the deep sea by extending the ship's chain until the base 2 of the device reaches the bottom of the deep sea. The outer frame 25 is connected to the outside of the base plate 21 by multiple connecting brackets 24, increasing the bottom load-bearing area of ​​the device and enhancing its support and stability. The tripod 26 on the outside of the outer frame 25 is connected to the fixing sleeve 28 on the outside of the support column 4 by reinforcing rods 27, further increasing the support strength of the outer frame. The fixing bracket 5 is welded to the outside of the multiple support columns 4, further increasing the strength of the outer frame and improving its stability during use.

[0021] The vibration sampling mechanism 6 includes a vibrator 61, a vibration head 618 installed at the lower end of the vibrator 61, a bearing seat 62 installed at the lower end of the vibration head 618, a support shaft 63 rotatably connected to the inner cavity of the bearing seat 62, a sampling tube 64 screwed to the lower end of the support shaft 63, and blades 617 equidistantly connected to the lower end of the sampling tube 64.

[0022] By activating the vibrator 61, which emits high-frequency hammering vibrations through the vibrating head 618, the vibrating head 618 then synchronously vibrates the bearing seat 62, the support shaft 63, and the sampling tube 64, thereby pressing the sampling tube 64 down into the seabed sediments. Furthermore, the blade 617 designed at the lower end of the sampling tube 64 reduces the difficulty of pressing down into complex strata such as iron plate sand and gravel, thus improving the efficiency of sampling.

[0023] A positioning component is fixedly installed on the outer side of the vibrating head 618. A rotating component 65 is installed between the top cover 1 and the bottom plate 21. A displacement component that meshes with the rotating component 65 is installed on the outer side of the positioning component.

[0024] The positioning assembly includes two sets of sliding columns 66 installed between the top cover 1 and the bottom plate 21. Sliding sleeves 67 are movably sleeved on the outer side of each sliding column 66. Support blocks 68 are connected to the outer side of each sliding sleeve 67. Support sleeves 612 are connected to the corresponding side of the two sets of support blocks 68. The support sleeves 612 are fixedly sleeved on the outer side of the vibrating head 618.

[0025] After the vibrator 61 starts high-frequency vibration, the vibrator 61, the vibrating head 618, and the sampling tube 64 vibrate and move downward synchronously. The vibrating head 618 drives the outer support sleeve 612, support block 68, and sliding sleeve 67 to move downward synchronously. The sliding sleeve 67 moves downward stably and is limited on the outside of the sliding column 66, which effectively improves the stability of the sampling tube 64 pressing down to sample.

[0026] The displacement assembly includes a first connecting rod 610 and a second connecting rod 613 respectively installed on both sides of the support sleeve 612. A slider 611 is connected to the outer side of the first connecting rod 610. Two sets of slide rails 69 that slide in contact with the slider 611 are installed between the top cover 1 and the bottom plate 21. A T-shaped rod 614 is installed on the outer side of the second connecting rod 613. Teeth 615 are installed at equal intervals on one side of the T-shaped rod 614.

[0027] The rotating assembly 65 includes a first support base 651 mounted on the lower end of the top cover 1. A connecting shaft 652 is rotatably connected to the middle of the first support base 651, and a first sprocket 653 is mounted on the outer side of the connecting shaft 652. A second support base 655 is mounted on the upper end of the base plate 21. A drive shaft 656 is rotatably connected to the middle of the second support base 655, and a second sprocket 657 is mounted on the outer side of the drive shaft 656. A chain 65 meshes between the second sprocket 657 and the first sprocket 653. 4. Multiple sets of teeth 615 mesh with the chain 654. A second bevel gear 658 is installed on the outer side of the drive shaft 656. A sleeve 22 is installed in the middle of the upper end of the base plate 21. An installation groove 211 is provided at the upper end of the sleeve 22. A bearing 212 is installed in the inner cavity of the installation groove 211. A first bevel gear 23 is rotatably installed in the inner cavity of the bearing 212. The first bevel gear 23 meshes with the second bevel gear 658. Two sets of limiting strips 213 are integrally connected to the inner cavity of the first bevel gear 23.

[0028] The vibrating head 618 drives the support sleeve 612, the second connecting rod 613, and the first connecting rod 610 to move downwards synchronously. The second connecting rod 613, via the T-shaped rod 614, drives multiple teeth 615 to move downwards. The teeth 615 drive the chain 654, which meshes with them, to rotate. The chain 654 drives the first sprocket 653 and the second sprocket 657 to rotate synchronously. The second sprocket 657 drives the drive shaft 656 and the second bevel gear 658 to rotate synchronously. The second bevel gear 658 drives the first bevel gear 23, which meshes with it, to rotate. The limiting strip 213 on the inner side of the sampling tube 64 is slidably connected to the limiting groove 616 on the outer side of the sampling tube 64. Thus, when the first bevel gear 23 rotates, the limiting strip 213 on the inner side of the first bevel gear 23 drives the sampling tube 64 to rotate synchronously. This allows the sampling tube 64 to rotate while moving downward under high-frequency hammer vibration, effectively improving the drilling efficiency of the sampling tube 64 into the formation and improving the sampling effect. At the same time, the first connecting rod 610 drives the slider 611 to move downward within the inner cavity of the slide rail 69, effectively improving the stability of the displacement component driving the rotation component 65 to rotate.

[0029] The present invention also provides a method for underwater sediment vibration sampling on the deep seabed, comprising the following steps: S1. First, after the ship connects one end of the chain to the chain link 7, the sampling device is placed into the deep sea bottom by extending and releasing the chain. S2. By starting the vibrator 61, the vibrator 61 emits high-frequency hammering vibration through the vibrating head 618. Then the vibrating head 618 emits synchronous vibration to the bearing seat 62, the support shaft 63 and the sampling tube 64, thereby causing the blade 617 at the lower end of the sampling tube 64 to press down into the seabed sediment, and the sampling tube 64 gradually enters the stratum to carry out sampling operations. S3. Then, the vibrating head 618 drives the support sleeve 612 and the second connecting rod 613 to move down synchronously. The second connecting rod 613 drives multiple teeth 615 to move down through the T-shaped rod 614. The teeth 615 drive the chain 654 to rotate. The chain 654 drives the second sprocket 657 to mesh and rotate synchronously. The second sprocket 657 drives the transmission shaft 656 and the second bevel gear 658 to rotate. The second bevel gear 658 drives the first bevel gear 23 to rotate. The limiting strip 213 on the inner side of the first bevel gear 23 drives the sampling tube 64 to rotate synchronously. This allows the sampling tube 64 to rotate while moving down due to high-frequency hammer vibration, enabling the sampling tube 64 to rotate and drill into the formation for sampling. S4. Subsequently, after the sampling tube 64 has completed the sampling, the ship will use a winding chain to move the entire sampling device upwards away from the ocean, thus completing the seabed sediment sampling operation.

[0030] Working principle: After the ship connects one end of the cable to the chain link 7, the device is lowered into the deep sea by extending the ship's cable until the base 2 of the device reaches the bottom of the deep sea. The outer frame 25 is connected to the outside of the base plate 21 by multiple connecting frames 24, which increases the bottom load-bearing area of ​​the device and increases its support and stability. Furthermore, the tripod 26 on the outer side of the outer frame 25 is connected to the fixing sleeve 28 on the outer side of the support column 4 via the reinforcing rod 27, which further increases the support strength of the outer frame. Then, the vibrator 61 is started, and the vibrator 61 emits high-frequency hammering vibration through the vibrating head 618. Then, the vibrating head 618 emits synchronous vibration to the bearing seat 62, the support shaft 63 and the sampling tube 64, thereby pressing the sampling tube 64 down into the seabed sediment. Moreover, the blade 617 designed at the lower end of the sampling tube 64 reduces the difficulty of pressing down into complex strata such as iron plate sand and gravel, and improves the sampling efficiency. At the same time, the vibrating head 618 drives the outer support sleeve 612, support block 68 and sliding sleeve 67 to move down synchronously, while the sliding sleeve 67 moves down stably and is limited on the outside of the sliding column 66, which effectively improves the stability of the sampling tube 64 pressing down to sample. Furthermore, the vibrating head 618 drives the support sleeve 612, the second connecting rod 613, and the first connecting rod 610 to move downwards synchronously. The second connecting rod 613 drives multiple teeth 615 to move downwards via the T-shaped rod 614. The teeth 615 drive the chain 654 meshing with them to rotate. The chain 654 drives the first sprocket 653 and the second sprocket 657 to mesh and rotate synchronously. The second sprocket 657 drives the transmission shaft 656 and the second bevel gear 658 to rotate synchronously. The second bevel gear 658 drives the first bevel gear 23 meshing with it to rotate. The limiting strip 213 on the inner side of the first bevel gear 23 slides and limits the sampling tube 64 to the limiting groove 616 on the outer side. Thus, while the first bevel gear 23 rotates, the limiting strip 213 on the inner side of the first bevel gear 23 drives the sampling tube 64 to rotate synchronously. This allows the sampling tube 64 to rotate while moving downwards due to high-frequency hammer vibration, effectively improving the drilling efficiency of the sampling tube 64 into the formation and improving the sampling effect.

Claims

1. A vibration sampling device for underwater sediments on the deep seabed, comprising an outer frame and a vibration sampling mechanism (6), characterized in that: The external frame includes a top cover (1), a base (2) and a support column (4). The lower end of the top cover (1) is equidistantly fitted with mounting sleeves (3), and the upper end of the support column (4) is installed in the inner cavity of the mounting sleeves (3). The base (2) includes a base plate (21), and the upper end of the base plate (21) is provided with equidistant insertion holes (29) that are inserted into the lower end of the support column (4). The lower outer part of the support column (4) is welded to the base plate (21). The vibration sampling mechanism (6) includes a vibrator (61), a vibration head (618) is installed at the lower end of the vibrator (61), a bearing seat (62) is installed at the lower end of the vibration head (618), a support shaft (63) is rotatably connected to the inner cavity of the bearing seat (62), a sampling tube (64) is screwed to the lower end of the support shaft (63), a positioning component is fixedly sleeved on the outer side of the vibration head (618), a rotating component (65) is installed between the top cover (1) and the bottom plate (21), and a displacement component that meshes with the rotating component (65) is installed on the outer side of the positioning component.

2. The underwater sediment vibration sampling device for deep-sea seabed according to claim 1, characterized in that: The positioning assembly includes two sets of sliding columns (66) installed between the top cover (1) and the bottom plate (21). Each sliding column (66) has a sliding sleeve (67) movably sleeved on its outer side. Each sliding sleeve (67) has a support block (68) connected to its outer side. The two sets of support blocks (68) are connected to a support sleeve (612) on their corresponding sides. The support sleeve (612) is fixedly sleeved on the outer side of the vibrating head (618).

3. The underwater sediment vibration sampling device for deep-sea seabed according to claim 2, characterized in that: The displacement assembly includes a first connecting rod (610) and a second connecting rod (613) respectively installed on both sides of the support sleeve (612). A slider (611) is connected to the outside of the first connecting rod (610). Two sets of slide rails (69) that slide in contact with the slider (611) are installed between the top cover (1) and the bottom plate (21). A T-shaped rod (614) is installed on the outside of the second connecting rod (613). Teeth (615) are installed at equal intervals on one side of the T-shaped rod (614).

4. The underwater sediment vibration sampling device for deep-sea seabed according to claim 3, characterized in that: The rotating assembly (65) includes a first support base (651) installed at the lower end of the top cover (1), a connecting shaft (652) is rotatably connected to the middle of the first support base (651), and a first sprocket (653) is installed on the outer side of the connecting shaft (652). A second support base (655) is installed on the upper end of the base plate (21). A drive shaft (656) is rotatably connected to the middle of the second support base (655). A second sprocket (657) is installed on the outer side of the drive shaft (656). A chain (654) is meshed between the second sprocket (657) and the first sprocket (653). Multiple sets of teeth (615) mesh with the chain (654). A second bevel gear (658) is installed on the outer side of the drive shaft (656). A sleeve (22) is installed in the middle of the upper end of the base plate (21). An installation groove (211) is provided at the upper end of the sleeve (22). A bearing (212) is installed in the inner cavity of the installation groove (211). A first bevel gear (23) is rotatably installed in the inner cavity of the bearing (212). The first bevel gear (23) meshes with the second bevel gear (658). Two sets of limiting strips (213) are integrally connected to the inner cavity of the first bevel gear (23).

5. The underwater sediment vibration sampling device for deep-sea seabed according to claim 4, characterized in that: Connecting frames (24) are installed at equal intervals on the outer side of the base plate (21). Multiple sets of connecting frames (24) are installed together on the outer side of an outer frame (25). Tripods (26) are welded at equal intervals on the outer side of the outer frame (25). A reinforcing rod (27) is welded to the upper end of the tripod (26). Fixing sleeves (28) are installed on the outer side of each support column (4). The fixing sleeves (28) are connected to the reinforcing rods (27).

6. The underwater sediment vibration sampling device for deep-sea seabed according to claim 5, characterized in that: The outer sides of the multiple sets of support columns (4) are welded together with a fixing frame (5).

7. The underwater sediment vibration sampling device for deep-sea seabed according to claim 6, characterized in that: The upper middle part of the base plate (21) is provided with a through hole (210), and the lower end of the sampling tube (64) is connected with blades (617) at equal intervals.

8. The underwater sediment vibration sampling device for deep-sea seabed according to claim 7, characterized in that: A chain link (7) is installed at the upper end of the top cover (1).

9. The method for underwater sediment vibration sampling from the deep seabed according to any one of claims 1-8, characterized in that, Includes the following steps: S1. First, after the ship attaches one end of the chain to the chain link (7), the sampling device is placed at the bottom of the deep sea by extending and extending the chain. S2. By starting the vibrator (61), the vibrator (61) emits high-frequency hammering vibration through the vibrating head (618). Then the vibrating head (618) emits synchronous vibration to the bearing seat (62), the support shaft (63) and the sampling tube (64), thereby causing the blade (617) at the lower end of the sampling tube (64) to press down into the seabed sediment, and the sampling tube (64) gradually enters the stratum to carry out sampling operations. S3. Then, the vibrating head (618) drives the support sleeve (612) and the second connecting rod (613) to move down synchronously. The second connecting rod (613) drives multiple teeth (615) to move down through the T-shaped rod (614). The teeth (615) drive the chain (654) to rotate. The chain (654) drives the second sprocket (657) to mesh and rotate synchronously. The second sprocket (657) drives the transmission shaft (656) and the second bevel gear (658) to rotate. The second bevel gear (658) drives the first bevel gear (23) to rotate. The limiting strip (213) on the inner side of the first bevel gear (23) drives the sampling tube (64) to rotate synchronously. This allows the sampling tube (64) to rotate while moving down due to high-frequency hammer vibration, so that the sampling tube (64) can rotate and drill into the formation for sampling. S4. After the sampling tube (64) has finished taking samples, the ship will reel in the chain, which will then move the entire sampling device up out of the ocean, and finally complete the seabed sediment sampling operation.

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