Marine geology coring device and method

Abstract

The invention relates to the technical field of marine geology coring, and discloses a marine geology coring device and method.The marine geology coring device comprises a base and a coring cylinder, the bottom of a first motor is fixedly connected with a first threaded rod, one end of the first threaded rod is in threaded connection with a first threaded seat, and one end of the first threaded seat is fixedly connected with a fixing sleeve; the coring barrel is located at the bottom of the fixing sleeve, the first motor is started to drive the first threaded rod to rotate, the first threaded rod drives the first threaded seat, the fixing sleeve and the coring barrel to move downwards, and therefore the bottom of the coring barrel is inserted into a seabed soil layer for coring, and after coring is completed, the coring barrel moves upwards to be reset. Then, a second motor is started to drive a second threaded rod to rotate, the second threaded rod drives a second threaded seat to move, the second threaded seat drives a sealing cover to move to the position below the coring barrel, finally, a first motor is started, the top of the sealing cover is inserted into the bottom of the coring barrel, and therefore the bottom of the coring barrel is sealed.

Description

Technical Field

[0001] The present invention relates to the technical field of marine geological coring, and in particular to a marine geological coring device and method. Background Art

[0002] The ocean covers approximately 71% of the Earth's surface area and contains rich mineral resources beneath it, recording the long history of the Earth's evolution. As a key device for obtaining core samples of the seabed strata, the marine geological coring device is of great significance for marine geological and environmental science research, marine mineral resource exploration, and subsea engineering geological investigation. The cores obtained through it are like "history books" deep in the ocean, providing a core basis for humans to uncover the mysteries of marine geology and rationally develop marine resources.

[0003] Seabed cores are like "time capsules" recording the history of the Earth, containing information on long-term changes in the marine environment. By carefully analyzing microbial fossils, sediment components, isotopes, etc. in the soil cores, scientists can reconstruct the paleoclimate and paleocean environment and gain an in-depth understanding of the evolution history of the Earth's climate. The foraminiferal fossils in the soil cores, the changes in their species and quantities can sensitively reflect environmental parameters such as seawater temperature and salinity at that time, providing important clues for studying the paleoclimate and helping us better understand the evolution law of the Earth's climate system.

[0004] Plate tectonics and geological evolution research: The cores obtained by the marine geological coring device can clearly reveal the structure of the seabed strata, providing key evidence for scientists to study geological processes such as plate movement, seabed volcanic activities, and sedimentation. Through comparative analysis of cores from different regions, we can gain an in-depth understanding of the drift history of the Earth's plates, the formation mechanism of seabed mountains, etc., further deepening our understanding of the Earth's geological evolution and promoting the continuous development of Earth science research.

[0005] Regarding the above related technologies, the inventor believes that there are the following defects: After the existing coring mechanism finishes coring, since the bottom of the coring barrel is not sealed, it is easy to cause sample leakage. Summary of the Invention

[0006] To solve the technical problem that after the existing coring mechanism finishes coring, since the bottom of the coring barrel is not sealed, it is easy to cause sample leakage, the present invention provides a marine geological coring device and method.

[0007] The present invention is implemented by the following technical solutions: An offshore geological coring device includes a base and a coring barrel. A fixed frame is fixedly connected to the top of the base. A plurality of support feet are fixedly connected to the four circumferences of the bottom of the base. A guide rod is fixedly connected to the top of the base. A cross plate is fixedly connected to the top of the guide rod. A first motor is arranged on the top of the cross plate. A first threaded rod is fixedly connected to the bottom of the first motor. One end of the first threaded rod is threadedly connected to a first threaded seat. One end of the first threaded seat is fixedly connected to a fixed sleeve. The coring barrel is located at the bottom of the fixed sleeve. A groove is processed inside the base. The coring barrel penetrates through the inside of the groove; Among them, a sealing cover is movably connected to the top of the base. The sealing cover is plug-connected to the bottom of the coring barrel. A second motor is processed inside the base. A second threaded rod is fixedly connected to one end of the second motor. One end of the second threaded rod is threadedly connected to a second threaded seat. A clamping plate is fixedly connected to the top of the second threaded seat. A fixed block is fixedly connected to one end of the sealing cover. The top of the clamping plate is plug-connected to the inside of the fixed block.

[0008] Preferably, two guide plates are fixedly connected to both ends of the first threaded seat. The guide plates are movably connected to the outside of the guide rod.

[0009] Preferably, a threaded column is fixedly connected to the top of the coring barrel. The threaded column is threadedly connected to the inside of the fixed sleeve. A button is arranged on the outside of the fixed sleeve. A movable block is fixedly connected to the inside of the button.

[0010] Preferably, two limiting grooves are processed inside the fixed sleeve. Two first limiting blocks are fixedly connected to both ends of the movable block. The first limiting blocks are movably connected to the inside of the limiting grooves.

[0011] Preferably, a movable groove is processed inside the threaded column. A second limiting block is movably connected to the inside of the movable groove. A plug block is fixedly connected to one side of the second limiting block. One end of the plug block is plug-connected to the inside of the fixed sleeve. One end of the plug block is in contact connection with one end of the movable block.

[0012] Preferably, a reset spring is arranged inside the movable groove. One end of the reset spring is fixedly connected to the inner wall of one end of the movable groove. The other end of the reset spring is fixedly connected to one side of the second limiting block.

[0013] Preferably, a sliding groove is processed on the top of the base. The second threaded seat is movably connected to the inside of the sliding groove.

[0014] Preferably, two connecting blocks are fixedly connected to the bottom of the sealing cover, two connecting grooves are machined on the top of the base, and the connecting blocks are movably connected inside the clamping blocks.

[0015] Preferably, a clamping block is fixedly connected to the bottom of the connecting block, a clamping groove is machined at the bottom of the connecting groove, the clamping block is movably connected inside the clamping groove, and one end of the clamping groove communicates with the inside of the groove.

[0016] A coring method for a marine geological coring device includes the following steps: S1: Start the first motor. The first motor will drive the first threaded rod to rotate. The first threaded rod will drive the first threaded seat to move downward. The first threaded seat will drive the fixed sleeve to move downward. The fixed sleeve will drive the coring barrel to move downward through the groove, and the coring barrel will core the seabed soil layer. S2: Then start the first motor to drive the coring barrel and the collected soil core to move upward and reset. S3: Then start the second motor. The second motor will drive the second threaded rod to rotate. The second threaded rod will drive the second threaded seat to move. The second threaded seat will drive the sealing cover to move through the clamping plate and the fixed block, so that the sealing cover moves to the lower part of the coring barrel. S4: Then start the first motor. The first motor drives the coring barrel to move downward, so that the top of the sealing cover is inserted into the bottom of the coring barrel, thereby sealing the bottom of the coring barrel. S5: Finally, press the button. The button will drive the movable block to move. The movable block will drive the insertion block to move. The insertion block will drive the second limiting block to move along the inside of the movable groove. When the insertion block completes disengaging from the inside of the fixed sleeve, rotate the coring barrel. The coring barrel will drive the threaded column to rotate along the inside of the fixed sleeve, thereby facilitating the removal of the coring barrel.

[0017] Compared with the prior art, the beneficial effects of the present invention are: When the present invention is in use, by starting the first motor, the first motor will drive the first threaded rod to rotate. The first threaded rod will drive the first threaded seat, the fixed sleeve and the coring barrel to move downward, so that the bottom of the coring barrel is inserted into the seabed soil layer for coring. After coring is completed, start the first motor to drive the coring barrel to move upward and reset. Then start the second motor. The second motor will drive the second threaded rod to rotate. The second threaded rod will drive the second threaded seat to move. The second threaded seat will drive the sealing cover to move to the lower part of the coring barrel. Finally, start the first motor to insert the top of the sealing cover into the bottom of the coring barrel, thereby sealing the bottom of the coring barrel.

[0018] When the present invention is in use, by pressing the button, the button will drive the movable block to move, the movable block will drive the insertion block to move, and the insertion block will drive the second limiting block to move along the inside of the movable groove. When the insertion block is completely disengaged from the inside of the fixed sleeve, rotate the core barrel, and the core barrel will drive the threaded column to rotate along the inside of the fixed sleeve, thereby facilitating the removal of the core barrel. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the connection structure between the core barrel and the fixed sleeve of the present invention; Figure 3 It is a schematic diagram of the internal structure of the threaded column of the present invention; Figure 4 It is a schematic diagram of the connection structure between the base and the sealing cover of the present invention.

[0020] In the figure: 1. Base; 2. Core barrel; 3. Fixed frame; 4. Support feet; 5. Fixed sleeve; 6. First motor; 7. First threaded rod; 8. First threaded seat; 9. Guide rod; 10. Cross plate; 11. Guide plate; 12. Groove; 13. Sealing cover; 14. Button; 15. Movable block; 16. Threaded column; 17. Insertion block; 18. Movable groove; 19. Return spring; 20. First limiting block; 21. Limiting groove; 22. Second limiting block; 23. Second motor; 24. Second threaded rod; 25. Second threaded seat; 26. Clamping plate; 27. Connecting block; 28. Chute; 29. Connecting block; 30. Clamping block; 31. Connecting groove; 32. Card slot. Detailed Embodiments

[0021] Next, in combination with the drawings and specific embodiments, the present invention will be further described. It should be noted that on the premise of no conflict, any combination of the following described embodiments or technical features can form a new embodiment.

[0022] Embodiment 1: Please refer to Figure 1 - Figure 4, a marine geological coring device of this embodiment includes a base 1 and a coring barrel 2. A fixing frame 3 is fixedly connected to the top of the base 1. A plurality of supporting feet 4 are fixedly connected to the four surrounding bottoms of the base 1. A guiding rod 9 is fixedly connected to the top of the base 1. A cross plate 10 is fixedly connected to the top of the guiding rod 9. A first motor 6 is arranged on the top of the cross plate 10. A first threaded rod 7 is fixedly connected to the bottom of the first motor 6. One end of the first threaded rod 7 is threadedly connected to a first threaded seat 8. One end of the first threaded seat 8 is fixedly connected to a fixing sleeve 5. The coring barrel 2 is located at the bottom of the fixing sleeve 5. A groove 12 is machined inside the base 1. The coring barrel 2 penetrates through the inside of the groove 12. A sealing cover 13 is movably connected to the top of the base 1. The sealing cover 13 is plugged and connected to the bottom of the coring barrel 2. A second motor 23 is machined inside the base 1. One end of the second motor 23 is fixedly connected to a second threaded rod 24. One end of the second threaded rod 24 is threadedly connected to a second threaded seat 25. The top of the second threaded seat 25 is fixedly connected to a clamping plate 26. One end of the sealing cover 13 is fixedly connected to a fixing block 27. The top of the clamping plate 26 is plugged and connected to the inside of the fixing block 27; Among them, by starting the first motor 6, the first motor 6 will drive the first threaded rod 7 to rotate. The first threaded rod 7 will drive the first threaded seat 8 to move downward. The first threaded seat 8 will drive the fixing sleeve 5 to move downward. The fixing sleeve 5 will drive the coring barrel 2 to move downward through the groove 12, so that the bottom of the coring barrel 2 is inserted into the seabed soil layer for coring; Secondly, after coring is completed, start the first motor 6 to drive the coring barrel 2 to move upward and reset. Then start the second motor 23. The second motor 23 will drive the second threaded rod 24 to rotate. The second threaded rod 24 will drive the second threaded seat 25 to move. The second threaded seat 25 will drive the sealing cover 13 to move to the lower part of the coring barrel 2. Finally, start the first motor 6. The first motor 6 drives the coring barrel 2 to move downward, so that the top of the sealing cover 13 is plugged into the bottom of the coring barrel 2, thereby sealing the bottom of the coring barrel 2; Furthermore, two guiding plates 11 are fixedly connected to both ends of the first threaded seat 8. The guiding plates 11 are movably connected to the outside of the guiding rod 9. When the first threaded rod 7 rotates to drive the first threaded seat 8 to move downward, the first threaded seat 8 will drive the guiding plates 11 to move along the outside of the first threaded seat 8. By providing the guiding rod 9, the guiding rod 9 will limit the movement of the guiding plates 11, so that the coring barrel 2 keeps a stable state when moving; Furthermore, a sliding groove 28 is machined on the top of the base 1. The second threaded seat 25 is movably connected to the inside of the sliding groove 28. When the second threaded rod 24 drives the second threaded seat 25 to move, the second threaded seat 25 will limit the movement of the second threaded rod 24; Further, two connecting blocks 29 are fixedly connected to the bottom of the sealing cover 13. Two connecting grooves 31 are machined on the top of the base 1. The connecting blocks 29 are movably connected inside the clamping blocks 30. A clamping block 30 is fixedly connected to the bottom of the connecting block 29. A clamping groove 32 is machined at the bottom of the connecting groove 31. The clamping block 30 is movably connected inside the clamping groove 32. One end of the clamping groove 32 communicates with the inside of the groove 12; Among them, when the sealing cover 13 moves, the sealing cover 13 will drive the connecting block 29 to move. The connecting block 29 will move along the inside of the connecting groove 31. The connecting groove 31 will limit the movement of the connecting block 29. When the connecting block 29 drives the clamping block 30 to move, the clamping block 30 will move along the inside of the clamping groove 32. The clamping groove 32 will limit the movement of the clamping block 30, so that the sealing cover 13 remains stable when moving. Since one end of the clamping groove 32 communicates with the inside of the groove 12, when the clamping block 30 disengages from the inside of the clamping groove 32, the clamping groove 32 will release the limit on the sealing cover 13, facilitating the sealing cover 13 to disengage from the top of the base 1.

[0023] Embodiment 2: Based on Embodiment 1, this embodiment introduces the specific structures of the fixed sleeve 5 and the threaded column 16. A threaded column 16 is fixedly connected to the top of the core barrel 2. The threaded column 16 is threadedly connected inside the fixed sleeve 5. A button 14 is arranged outside the fixed sleeve 5. A movable block 15 is fixedly connected to the inner side of the button 14. An activity groove 18 is machined inside the threaded column 16. A second limiting block 22 is movably connected inside the activity groove 18. An insertion block 17 is fixedly connected to one side of the second limiting block 22. One end of the insertion block 17 is inserted and connected inside the fixed sleeve 5. One end of the insertion block 17 is in contact connection with one end of the movable block 15; Among them, by pressing the button 14, the button 14 will drive the movable block 15 to move. The movable block 15 will drive the insertion block 17 to move. The insertion block 17 will drive the second limiting block 22 to move along the inside of the activity groove 18. When the insertion block 17 is completely disengaged from the inside of the fixed sleeve 5, rotate the core barrel 2. The core barrel 2 will drive the threaded column 16 to rotate along the inside of the fixed sleeve 5, thus facilitating the removal of the core barrel 2; Further, two limiting grooves 21 are machined inside the fixed sleeve 5. Two first limiting blocks 20 are fixedly connected to both ends of the movable block 15. The first limiting blocks 20 are movably connected inside the limiting grooves 21. When the movable block 15 moves, the movable block 15 will drive the first limiting blocks 20 to move. The first limiting blocks 20 will move along the inside of the limiting grooves 21. The limiting grooves 21 will limit the movement of the first limiting blocks 20; Further, a reset spring 19 is arranged inside the movable slot 18. One end of the reset spring 19 is fixedly connected to one inner wall of the movable slot 18, and the other end of the reset spring 19 is fixedly connected to one side of the second limiting block 22. By arranging the reset spring 19, when the button 14 is pressed, the movable block 15 will drive the reset spring 19 to compress through the insertion block 17. When the button 14 is released, the reset spring 19 will reset and elongate, and the reset spring 19 will drive the insertion block 17 to move, so that the insertion block 17 is inserted into the inside of the fixed sleeve 5.

[0024] A coring method for a marine geological coring device includes the following steps: S1: Start the first motor 6. The first motor 6 will drive the first threaded rod 7 to rotate. The first threaded rod 7 will drive the first threaded seat 8 to move downward. The first threaded seat 8 will drive the fixed sleeve 5 to move downward. The fixed sleeve 5 will drive the coring barrel 2 to move downward through the groove 12, and the coring barrel 2 will core the seabed soil layer. S2: Then start the first motor 6 to drive the coring barrel 2 and the collected soil core to move upward and reset. S3: Then start the second motor 23. The second motor 23 will drive the second threaded rod 24 to rotate. The second threaded rod 24 will drive the second threaded seat 25 to move. The second threaded seat 25 will drive the sealing cover 13 to move through the clamping plate 26 and the fixed block 27, so that the sealing cover 13 moves to the lower part of the coring barrel 2. S4: Then start the first motor 6. The first motor 6 drives the coring barrel 2 to move downward, so that the top of the sealing cover 13 is inserted into the bottom of the coring barrel 2 to seal the bottom of the coring barrel 2. S5: Finally, press the button 14. The button 14 will drive the movable block 15 to move. The movable block 15 will drive the insertion block 17 to move. The insertion block 17 will drive the second limiting block 22 to move along the inside of the movable slot 18. When the insertion block 17 completes disengaging from the inside of the fixed sleeve 5, rotate the coring barrel 2, and the coring barrel 2 will drive the threaded column 16 to rotate along the inside of the fixed sleeve 5, so as to facilitate the removal of the coring barrel 2.

[0025] Working principle: By starting the first motor 6, the first motor 6 will drive the first threaded rod 7 to rotate. The first threaded rod 7 will drive the first threaded seat 8, the fixed sleeve 5 and the coring barrel 2 to move downward, so that the bottom of the coring barrel 2 is inserted into the seabed soil layer for coring. After coring is completed, start the first motor 6 to drive the coring barrel 2 to move upward and reset. Then start the second motor 23. The second motor 23 will drive the second threaded rod 24 to rotate. The second threaded rod 24 will drive the second threaded seat 25 to move. The second threaded seat 25 will drive the sealing cover 13 to move to the lower part of the coring barrel 2. Finally, start the first motor 6 to insert the top of the sealing cover 13 into the bottom of the coring barrel 2 to seal the bottom of the coring barrel 2.

[0026] The above embodiments are only preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. A marine geological coring device, comprising a base (1) and a coring barrel (2), characterized in that: The top of the base (1) is fixedly connected to a fixing frame (3), the bottom of the base (1) is fixedly connected to a plurality of supporting legs (4), the top of the base (1) is fixedly connected to a guide rod (9), the top of the guide rod (9) is fixedly connected to a horizontal plate (10), a first motor (6) is arranged on the top of the horizontal plate (10), the bottom of the first motor (6) is fixedly connected to a first threaded rod (7), one end of the first threaded rod (7) is threadedly connected to a first threaded seat (8), one end of the first threaded seat (8) is fixedly connected to a fixing sleeve (5), the core barrel (2) is located at the bottom of the fixing sleeve (5), a groove (12) is machined inside the base (1), and the core barrel (2) passes through the inside of the groove (12); The top of the base (1) is movably connected to a sealing cover (13), the sealing cover (13) is plug-connected to the bottom of the core barrel (2), a second motor (23) is processed inside the base (1), one end of the second motor (23) is fixedly connected to a second threaded rod (24), one end of the second threaded rod (24) is threadedly connected to a second threaded seat (25), the top of the second threaded seat (25) is fixedly connected to a clamping plate (26), one end of the sealing cover (13) is fixedly connected to a fixed block (27), and the top of the clamping plate (26) is plug-connected inside the fixed block (27).

2. A marine geological coring device according to claim 1, characterized in that: Two guide plates (11) are fixedly connected to both ends of the first threaded seat (8), and the guide plates (11) are movably connected to the outside of the guide rod (9).

3. The marine geological coring device according to claim 1, characterized in that: The top of the coring barrel (2) is fixedly connected to a threaded column (16), the threaded column (16) is threadedly connected to the inside of the fixing sleeve (5), the outside of the fixing sleeve (5) is provided with a button (14), and the inside of the button (14) is fixedly connected to a movable block (15).

4. A marine geological coring device according to claim 3, characterized in that: Two limiting grooves (21) are machined inside the fixed sleeve (5), two first limiting blocks (20) are fixedly connected to both ends of the movable block (15), and the first limiting blocks (20) are movably connected inside the limiting grooves (21).

5. A marine geological coring device according to claim 4, characterized in that: A movable groove (18) is machined inside the threaded column (16), a second limit block (22) is movably connected inside the movable groove (18), an insert block (17) is fixedly connected to one side of the second limit block (22), one end of the insert block (17) is plug-connected inside the fixed sleeve (5), and one end of the insert block (17) is contact-connected to one end of the movable block (15).

6. A marine geological coring device according to claim 5, characterized in that: A return spring (19) is disposed inside the movable groove (18), one end of the return spring (19) is fixedly connected to an inner wall at one end of the movable groove (18), and the other end of the return spring (19) is fixedly connected to one side of the second limit block (22).

7. The marine geological coring device according to claim 1, characterized in that: A slide groove (28) is processed on the top of the base (1), and the second threaded seat (25) is movably connected inside the slide groove (28).

8. The marine geological coring device according to claim 1, characterized in that: The bottom of the sealing cover (13) is fixedly connected to two connection blocks (29), the top of the base (1) is processed with two connection grooves (31), and the connection block (29) is movably connected to the inside of the clamping block (30).

9. The marine geological coring device according to claim 8, characterized in that: A clamping block (30) is fixedly connected to the bottom of the connection block (29), a clamping groove (32) is machined at the bottom of the connection groove (31), the clamping block (30) is movably connected inside the clamping groove (32), and one end of the clamping groove (32) is in communication with the inside of the groove (12).

10. A coring method for a marine geological coring device, characterized in that: The following steps are involved: S1: starting the first motor (6), the first motor (6) will drive the first threaded rod (7) to rotate, the first threaded rod (7) will drive the first threaded seat (8) to move downward, the first threaded seat (8) will drive the fixing sleeve (5) to move downward, the fixing sleeve (5) will drive the coring barrel (2) to pass through the groove (12) and move downward, and coring of the seabed soil layer is performed through the coring barrel (2); S2: then starting the first motor (6), thereby driving the coring barrel (2) and the collected soil core to move upward and reset; S3: The second motor (23) is started again, the second motor (23) drives the second threaded rod (24) to rotate, the second threaded rod (24) drives the second threaded seat (25) to move, and the second threaded seat (25) drives the sealing cover (13) to move through the clamping plate (26) and the fixing block (27), so that the sealing cover (13) moves to the bottom of the core barrel (2); S4: starting the first motor (6) again, the first motor (6) drives the coring barrel (2) to move downward, so that the top of the sealing cover (13) is inserted into the bottom of the coring barrel (2), thereby sealing the bottom of the coring barrel (2); S5: Finally, the button (14) is pressed, and the button (14) will drive the movable block (15) to move, and the movable block (15) will drive the plug block (17) to move, and the plug block (17) will drive the second limit block (22) to move along the inside of the movable groove (18). When the plug block (17) is completely separated from the inside of the fixed sleeve (5), the core barrel (2) is rotated, and the core barrel (2) will drive the threaded column (16) to rotate along the inside of the fixed sleeve (5), thereby facilitating the removal of the core barrel (2).

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