Rapid rock core extraction device for shale gas exploration and use method of rapid rock core extraction device

Abstract

The invention discloses a shale gas exploration rapid rock core extraction device and a using method thereof, and relates to the technical field of shale gas exploration, the shale gas exploration rapid rock core extraction device comprises a workbench and a moving plate, a mechanical frame is arranged above the workbench, a damping adjusting mechanism is arranged in the mechanical frame, and the damping adjusting mechanism comprises a first motor arranged in the mechanical frame; a first gear is arranged at the output end of the first motor, a second gear is in meshed connection with the side edge of the first gear, a first connecting shaft piece is fixedly connected to the upper portion of the second gear, an arc-shaped plate is rotationally connected to the side, away from the second gear, of the first connecting shaft piece, and a first damping plate is fixedly connected to the side, away from the first connecting shaft piece, of the arc-shaped plate; a spring set is arranged on the side edge of the first damping plate, vibration energy is effectively absorbed and dispersed through bidirectional movement of the spring set and application of elastic potential energy, mechanical parts in the rock core extraction mechanism are protected, the service life of the parts is prolonged, meanwhile, the precision and efficiency of rock core extraction are improved, and the adaptability and safety of the device are high.

Description

Technical Field

[0001] The present invention relates to the technical field of shale gas exploration, and in particular to a shale gas exploration fast core extraction device and a use method thereof. Background Art

[0002] Shale gas exploration is a complex and systematic process, which involves knowledge and technology from multiple disciplines such as geology, geophysics, and drilling engineering. Shale gas is mainly stored in the matrix pores, cracks, and surface layers of organic matter or clay minerals in shale layers. It has obvious "in situ" reservoir characteristics, that is, shale gas is formed and accumulated inside the shale layer, and usually does not require long-distance migration. Therefore, the exploration and development of shale gas needs to be carried out according to its specific reservoir characteristics. The shale gas exploration rapid core extraction device is a device specially used for rapid and accurate core extraction during shale gas exploration. The device combines the advantages of modern drilling technology and core sampling technology, and has the characteristics of compact structure, easy operation, and high sampling efficiency.

[0003] After searching, the Chinese patent number CN220667495U discloses a shale gas exploration fast core extraction device, which belongs to the field of shale gas exploration technology, including a mounting plate, a support sleeve is fixed on the top of the mounting plate, a core extraction device body is installed on the top of the support sleeve, and support feet are evenly hinged on the outer side of the bottom of the mounting plate, and an angle adjustment mechanism is arranged between the support feet. By respectively opening hydraulic cylinders inside the support feet, and then using a hydraulic pump to cooperate with a shunt pipe to transport hydraulic oil to the inside of the hydraulic cylinder, the extension and retraction of the support rod inside the support foot can be controlled to adjust the height during use, and during the adjustment process, since the hydraulic cylinders are connected, the pressure value inside them is the same, and then the extension and retraction of the support rod inside the support foot can be automatically controlled to different degrees, ensuring that the bottom end of the support rod fits the ground, making the height adjustment and stability adjustment of the device more convenient.

[0004] However, in actual use of the above-mentioned device, the shale gas exploration rapid core extraction device may encounter rocks with higher hardness when using drilling to sample cores. Drilling through the surface of the rock with higher hardness will produce greater vibrations, which will cause the relative movement between the mechanical parts in the core extraction mechanism to become unstable, thereby increasing the friction and wear between the parts, which will not only reduce the service life of the parts, but also may affect the accuracy and efficiency of core extraction. Therefore, it is necessary to propose a shale gas exploration rapid core extraction device and a method for using the same. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that a shale gas exploration rapid core extraction device may encounter rocks with higher hardness when using drilling to sample cores. When drilling through the surface of the rock with higher hardness, greater vibration will be generated, which will cause the relative movement between the mechanical parts in the core extraction mechanism to become unstable, thereby increasing the friction and wear between the parts, which will not only reduce the service life of the parts, but also may affect the accuracy and efficiency of core extraction. A shale gas exploration rapid core extraction device and a method of using the same are proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A shale gas exploration fast core extraction device, comprising a workbench and a moving plate, a mechanical frame is arranged above the workbench, a shock-absorbing adjustment mechanism is arranged inside the mechanical frame, the shock-absorbing adjustment mechanism comprises a first motor arranged inside the mechanical frame, a first gear is arranged at the output end of the first motor, a second gear is meshedly connected to the side of the first gear, a first coupling is fixedly connected above the second gear, a side of the first coupling away from the second gear is rotatably connected to an arc plate, a side of the arc plate away from the first coupling is fixedly connected to a first shock-absorbing plate, a side of the first shock-absorbing plate is arranged with a spring group, and the operation of the first motor causes the spring group to change from a static state to a moving state;

[0008] A core extraction mechanism is arranged above the workbench, and the core extraction mechanism includes a support plate arranged above the workbench, a fixing piece is fixedly connected above the support plate, a first hydraulic rod is rotatably connected to a side of the fixing piece close to the support plate, a core extraction assembly is arranged on a side of the first hydraulic rod away from the support plate, a guard frame is fixedly connected below the core extraction assembly, a drilling rod is arranged on a side of the core extraction assembly close to the guard frame, and the core extraction assembly can control the drilling rod to quickly perform core extraction operations.

[0009] The above technical solution further includes:

[0010] The mechanical frame is fixedly connected to the first motor, the second gear is rotationally connected to the mechanical frame, a second coupling is rotationally connected to a side of the mechanical frame close to the second gear, and the second coupling is rotationally connected to the arc plate.

[0011] A side of the first coupling member close to the second gear is rotatably connected with a central shaft block, and the central shaft block is fixedly connected to the mechanical frame.

[0012] The second damping plate is fixedly connected to the side of the spring group away from the first damping plate.

[0013] The first gear is meshedly connected with a third gear on a side away from the second gear, and the first gear can control the third gear to drive another set of spring groups to move.

[0014] A connecting plate is fixedly connected below the mechanical frame, and the connecting plate is fixedly connected to the moving plate.

[0015] The support plate is fixedly connected to the movable plate, the guard frame is rotatably connected to the support plate, and a square groove is provided inside the workbench.

[0016] A second motor is fixedly mounted on the inner wall of the square groove, a threaded rod is provided at the output end of the second motor, and the threaded rod is threadedly connected to the moving plate.

[0017] A second hydraulic rod is rotatably connected under the workbench, a side of the second hydraulic rod away from the workbench is fixedly connected to a triangular base, a side of the triangular base is rotatably connected to an L-shaped telescopic plug plate, and a side of the second hydraulic rod close to the workbench is rotatably connected to a telescopic bracket.

[0018] A method for using a shale gas exploration fast core extraction device comprises the following steps:

[0019] Step 1: Start the shock-absorbing adjustment mechanism, the first motor in the shock-absorbing adjustment mechanism starts to run, the first motor drives the first gear to rotate, the first gear drives the second gear to rotate through meshing connection, the rotation of the second gear causes the first coupling member to start moving, the first coupling member drives the arc plate to move, and the arc plate causes the first shock-absorbing plate to start moving;

[0020] Step 2: The first damping plate drives the spring group to move, and the two spring groups move toward each other, and the spring group drives the second damping plate to move, so that the two second damping plates fit the core extraction assembly, and the spring group is compressed and generates elastic potential energy prestress, providing shock absorption protection for the core extraction assembly;

[0021] Step 3: Start the core extraction mechanism, the support plate and the fixing member install the first hydraulic rod on the support plate, the first hydraulic rod drives the core extraction assembly to move, the core extraction assembly rotates around one end of the support plate, and the core extraction assembly drives the guard frame to rotate;

[0022] Step 4: The core extraction assembly drives the drilling rod to rotate, so that the drilling rod performs core extraction operations at an appropriate angle. When the movable plate moves, it drives the core extraction mechanism to adjust the position, so that the core extraction mechanism can adjust the position and angle according to actual conditions. The shock-absorbing adjustment mechanism and the core extraction mechanism work together to achieve efficient and stable extraction of the core.

[0023] The present invention has the following beneficial effects:

[0024] 1. In the present invention, the vibration caused by the high-hardness rock can be effectively reduced during the drilling process by setting up a shock-absorbing adjustment mechanism. The first motor drives the rotation of the first gear and the second gear, thereby driving the movement of the arc plate and the first shock-absorbing plate, so that the spring group generates elastic potential energy prestress. This design can automatically adjust the compression degree of the spring group according to different vibration forces to ensure the stability of the drilling rod during operation. The bidirectional movement of the spring group and the application of elastic potential energy effectively absorb and disperse the vibration energy, protect the mechanical parts in the core extraction mechanism, extend the service life of the parts, and at the same time improve the accuracy and efficiency of core extraction.

[0025] 2. In the present invention, the core extraction mechanism realizes the rapid core extraction operation of the drilling rod at multiple angles through the telescopic connection of the first hydraulic rod and the rotational connection between the guard frame and the support plate. This design enables the drilling rod to adjust the position and angle according to actual conditions, thereby expanding the range of core extraction and improving the flexibility and accuracy of extraction. At the same time, the rapid response capability of the core extraction component also ensures the operating efficiency under complex geological conditions. The operation is simple and the production cost is low, which improves the core recovery rate of the device. The higher the core recovery rate, the more complete and reliable the core data obtained.

[0026] 3. In the present invention, by opening a square groove inside the workbench and installing a second motor, the threaded connection between the threaded rod and the movable plate is utilized to achieve stable movement of the core extraction device. This design enables the device to be accurately adjusted in position within the operating area according to different exploration requirements. In addition, the design of the second hydraulic rod and the triangular base and its L-shaped telescopic plug plate under the workbench ensures the stable fixation of the device on the rugged ground, and enhances the adaptability and safety of the device. This stable fixation and mobility provides reliable technical support for shale gas exploration, thereby ensuring that the device can be applied to exploration or sampling work in different environments and for different materials, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a shale gas exploration rapid core extraction device and a method of using the device is provided in the present invention;

[0028] Figure 2 It is a schematic diagram of the first three-dimensional structure of the present invention;

[0029] Figure 3 It is a schematic diagram of a second three-dimensional structure in the present invention;

[0030] Figure 4 is a schematic diagram of a third three-dimensional structure in the present invention;

[0031] Figure 5 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0032] Figure 6 for Figure 4 Enlarged schematic diagram of the structure at point B in the middle.

[0033] In the figure: 1. workbench; 2. mechanical frame; 3. first motor; 4. first gear; 5. second gear; 6. first coupling; 7. arc plate; 8. second coupling; 9. central shaft block; 10. first damping plate; 11. spring group; 12. second damping plate; 13. third gear; 14. connecting plate; 15. bracket plate; 16. fixing part; 17. first hydraulic rod; 18. core extraction assembly; 19. guard frame; 20. drilling rod; 21. square groove; 22. second motor; 23. threaded rod; 24. moving plate; 25. second hydraulic rod; 26. triangular base; 27. L-shaped telescopic plug plate; 28. telescopic bracket. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] like Figure 1-Figure 6 As shown, a shale gas exploration fast core extraction device includes a workbench 1 and a moving plate 24, a mechanical frame 2 is arranged above the workbench 1, a shock-absorbing adjustment mechanism is arranged inside the mechanical frame 2, and the shock-absorbing adjustment mechanism includes a first motor 3 arranged inside the mechanical frame 2, a first gear 4 is arranged at the output end of the first motor 3, a second gear 5 is meshed and connected to the side of the first gear 4, a first connecting shaft 6 is fixedly connected above the second gear 5, a side of the first connecting shaft 6 away from the second gear 5 is rotatably connected to an arc plate 7, a side of the arc plate 7 away from the first connecting shaft 6 is fixedly connected to a first shock-absorbing plate 10, a spring group 11 is arranged on the side of the first shock-absorbing plate 10, and the operation of the first motor 3 causes the spring group 11 to change from a static state to a moving state;

[0037] A core extraction mechanism is arranged above the workbench 1, and the core extraction mechanism includes a support plate 15 arranged above the workbench 1, a fixing member 16 is fixedly connected above the support plate 15, a first hydraulic rod 17 is rotatably connected to a side of the fixing member 16 close to the support plate 15, a core extraction assembly 18 is arranged on a side of the first hydraulic rod 17 away from the support plate 15, a protective frame 19 is fixedly connected below the core extraction assembly 18, a drilling rod 20 is arranged on a side of the core extraction assembly 18 close to the protective frame 19, and the core extraction assembly 18 can control the drilling rod 20 to quickly perform core extraction operations;

[0038] The mechanical frame 2 is fixedly connected to the first motor 3, the second gear 5 is rotatably connected to the mechanical frame 2, a second coupling 8 is rotatably connected to a side of the mechanical frame 2 close to the second gear 5, and the second coupling 8 is rotatably connected to the arc plate 7;

[0039] A central shaft block 9 is rotatably connected to one side of the first coupling member 6 close to the second gear 5, and the central shaft block 9 is fixedly connected to the mechanical frame 2;

[0040] A second damping plate 12 is fixedly connected to a side of the spring group 11 away from the first damping plate 10;

[0041] The first gear 4 is meshedly connected to a third gear 13 at one side away from the second gear 5. The first gear 4 can control the third gear 13 to drive another set of spring groups 11 to move;

[0042] A connecting plate 14 is fixedly connected to the lower side of the mechanical frame 2 , and the connecting plate 14 is fixedly connected to the moving plate 24 .

[0043] In this embodiment, a mechanical frame 2 is fixedly connected above the workbench 1, and the shock-absorbing adjustment mechanism arranged inside the mechanical frame 2 is started, so that the first motor 3 in the shock-absorbing adjustment mechanism starts to run. When the first motor 3 runs, it starts to control the first gear 4 arranged at its output end to rotate. The side of the first gear 4 is meshed and connected with the second gear 5. When the first gear 4 rotates, it drives the second gear 5 to start rotating. When the second gear 5 rotates, the first coupling 6 arranged above it starts to move. The first coupling 6 is rotationally connected to the side away from the second gear 5. When the first coupling 6 rotates, it drives the arc plate 7 to start moving. A central shaft block 9 is rotationally connected below the first coupling 6. The other end of the central shaft block 9 is fixedly connected to the mechanical frame 2, so that the first coupling 6 rotates around the central shaft block 9 to play a positioning role. The other side of the arc plate 7 is rotationally connected to the second coupling 8. The second coupling 8 is rotationally connected to the mechanical frame 2. The central shaft block 9 is limited by a certain position of the second coupling 8, so that the other end of the arc of the arc plate 7 starts to move. The first gear 4 is meshed and connected to the second gear 5. When the first gear 4 rotates, it drives the second gear 5 to start rotating. When the second gear 5 rotates, the first coupling 6 starts to move. When rotating, the third gear 13 meshing with the side thereof starts to rotate. The third gear 13 drives another set of arc plates 7 to start moving by the same principle, so that the two sets of arc plates 7 move toward each other, forming a movement similar to clamping. The other end of the arc plate 7 is fixedly connected with the first damping plate 10. When the arc plate 7 moves, it drives the first damping plate 10 to start moving. A spring group 11 is fixedly connected between the first damping plate 10 and the second damping plate 12. When the first damping plate 10 moves, it drives the spring group 11 and the second damping plate 12 to move in the same manner. The two groups of second damping plates 12 will gradually approach and fit with the core extraction assembly 18 located in the middle. At this time, the spring group 11 between the second damping plate 12 and the first damping plate 10 begins to be gradually compressed, so that the spring group 11 has elastic potential energy. When the vibration generated by the drilling rod 20 during operation is large, a large elastic potential energy prestress can be applied through the spring group 11, and vice versa, a small elastic potential energy prestress can be applied, so that the vibration force and the elastic potential energy offset each other, thereby reducing the vibration of the core extraction assembly 18 and protecting the core extraction assembly 18;

[0044] A support plate 15 is fixedly connected above the movable plate 24. The support plate 15 is a component in the core extraction mechanism. The core extraction mechanism includes a fixing member 16 fixedly connected above the support plate 15. One end of the fixing member 16 is rotatably connected to a first hydraulic rod 17. The first hydraulic rod 17 can control its own structure to extend and retract. The other end of the first hydraulic rod 17 is connected to a core extraction component 18. When the first hydraulic rod 17 is extended and retracted, the core extraction component 18 can be driven to move. Since the protective frame 19 is rotatably connected to the support plate 15 and the protective frame 19 is fixedly connected to the core extraction component 18, the core extraction component 18 is rotated around one end of the support plate 15. When the core extraction component 18 rotates, it can drive the drilling rod 20 arranged at its output end to rotate, so that the drilling rod 20 can adjust the angle when extracting the core, to ensure that the range of core extraction is sufficient.

[0045] Embodiment 2

[0046] like Figure 1-Figure 6 As shown, the support plate 15 is fixedly connected to the movable plate 24, the guard frame 19 is rotatably connected to the support plate 15, and a square groove 21 is provided inside the workbench 1;

[0047] A second motor 22 is fixedly mounted on the inner wall of the square groove 21, and a threaded rod 23 is provided at the output end of the second motor 22, and the threaded rod 23 is threadedly connected to the moving plate 24;

[0048] A second hydraulic rod 25 is rotatably connected below the workbench 1. A triangular base 26 is fixedly connected to the side of the second hydraulic rod 25 away from the workbench 1. An L-shaped telescopic plug plate 27 is rotatably connected to the side of the triangular base 26. A telescopic bracket 28 is rotatably connected to the side of the second hydraulic rod 25 close to the workbench 1.

[0049] In this embodiment, a square groove 21 is opened inside the workbench 1, and a second motor 22 fixedly installed on the inner wall of the square groove 21 starts to run. When the second motor 22 runs, it controls the threaded rod 23 arranged at its output end to rotate, and the other end of the threaded rod 23 rotates on the inner wall of the square groove 21. The outer thread of the threaded rod 23 is connected with a moving plate 24. When the threaded rod 23 rotates inside the moving plate 24, a spiral force is generated, so that the moving plate 24 starts to move. When the moving plate 24 moves, it can drive the shock absorbing adjustment mechanism and the core extraction mechanism arranged above to move, so that the position of the core extraction can be changed. A second hydraulic rod 25 is rotatably connected below the workbench 1. The second hydraulic rod 25 can control its own structure to be extended and retracted, and the second hydraulic rod 25 can be rotated outside the workbench 1. A triangular base 26 is fixedly connected to the other side of the second hydraulic rod 25. An L-shaped telescopic plug plate 27 is rotatably connected to each side of the triangular base 26. Each group of L-shaped telescopic plug plates 27 can be inserted into the soil according to actual conditions. A telescopic bracket 28 is rotatably connected between the second hydraulic rod 25 and the workbench 1 to ensure that the supporting performance of the second hydraulic rod 25 is good and that the device can be fixed on rugged ground.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shale gas exploration rapid core extraction device, comprising a workbench (1) and a movable plate (24), characterized in that: A mechanical frame (2) is arranged above the workbench (1), a shock-absorbing adjustment mechanism is arranged inside the mechanical frame (2), and the shock-absorbing adjustment mechanism comprises a first motor (3) arranged inside the mechanical frame (2), a first gear (4) is arranged at the output end of the first motor (3), a second gear (5) is meshingly connected to the side of the first gear (4), a first connecting member (6) is fixedly connected above the second gear (5), a side of the first connecting member (6) away from the second gear (5) is rotatably connected to an arc plate (7), a side of the arc plate (7) away from the first connecting member (6) is fixedly connected to a first shock-absorbing plate (10), a side of the first shock-absorbing plate (10) is arranged with a spring group (11), and the operation of the first motor (3) causes the spring group (11) to change from a static state to a moving state; A core extraction mechanism is arranged above the workbench (1), and the core extraction mechanism comprises a support plate (15) arranged above the workbench (1); a fixing member (16) is fixedly connected to the top of the support plate (15); a first hydraulic rod (17) is rotatably connected to the side of the fixing member (16) close to the support plate (15); a core extraction assembly (18) is arranged on the side of the first hydraulic rod (17) away from the support plate (15); a protective frame (19) is fixedly connected to the bottom of the core extraction assembly (18); a drilling rod (20) is arranged on the side of the core extraction assembly (18) close to the protective frame (19); and the core extraction assembly (18) can control the drilling rod (20) to quickly perform a core extraction operation.

2. A shale gas exploration rapid core extraction device according to claim 1, characterized in that: The mechanical frame (2) is fixedly connected to the first motor (3), the second gear (5) is rotationally connected to the mechanical frame (2), a second coupling member (8) is rotationally connected to a side of the mechanical frame (2) close to the second gear (5), and the second coupling member (8) is rotationally connected to the arc plate (7).

3. A shale gas exploration rapid core extraction device according to claim 1, characterized in that: The first connecting member (6) is rotatably connected to a central shaft block (9) on one side close to the second gear (5), and the central shaft block (9) is fixedly connected to the mechanical frame (2).

4. A shale gas exploration rapid core extraction device according to claim 3, characterized in that: A second shock absorbing plate (12) is fixedly connected to a side of the spring group (11) away from the first shock absorbing plate (10).

5. The device for rapid core extraction for shale gas exploration according to claim 1, characterized in that: A third gear (13) is meshedly connected to a side of the first gear (4) away from the second gear (5), and the first gear (4) can control the third gear (13) to drive another group of springs (11) to move.

6. A shale gas exploration rapid core extraction device according to claim 1, characterized in that: A connecting plate (14) is fixedly connected below the mechanical frame (2), and the connecting plate (14) is fixedly connected to the moving plate (24).

7. A shale gas exploration rapid core extraction device according to claim 1, characterized in that: The support plate (15) and the movable plate (24) are fixedly connected, the guard frame (19) and the support plate (15) are rotatably connected, and a square groove (21) is provided inside the workbench (1).

8. A shale gas exploration rapid core extraction device according to claim 7, characterized in that: A second motor (22) is fixedly mounted on the inner wall of the square groove (21); a threaded rod (23) is provided at the output end of the second motor (22); and the threaded rod (23) is threadedly connected to the moving plate (24).

9. A shale gas exploration rapid core extraction device according to claim 1, characterized in that: A second hydraulic rod (25) is rotatably connected to the bottom of the workbench (1); a side of the second hydraulic rod (25) away from the workbench (1) is fixedly connected to a triangular base (26); a side of the triangular base (26) is rotatably connected to an L-shaped telescopic plug plate (27); and a side of the second hydraulic rod (25) close to the workbench (1) is rotatably connected to a telescopic bracket (28).

10. The method for using the shale gas exploration rapid core extraction device according to claim 1, characterized in that: The following steps are involved: Step 1: starting the shock-absorbing adjustment mechanism, the first motor (3) in the shock-absorbing adjustment mechanism starts to operate, the first motor (3) drives the first gear (4) to rotate, the first gear (4) drives the second gear (5) to rotate through meshing connection, the rotation of the second gear (5) causes the first coupling member (6) to start moving, the first coupling member (6) drives the arc plate (7) to move, and the arc plate (7) causes the first shock-absorbing plate (10) to start moving; Step 2: The first damping plate (10) drives the spring group (11) to move, and the two groups of spring groups (11) move toward each other. The spring group (11) drives the second damping plate (12) to move, so that the two groups of second damping plates (12) fit the core extraction component (18), and the spring group (11) is compressed and generates elastic potential energy prestress, thereby providing shock absorption protection for the core extraction component (18); Step 3: Start the core extraction mechanism, the support plate (15) and the fixing member (16) install the first hydraulic rod (17) thereon, the first hydraulic rod (17) drives the core extraction component (18) to move, the core extraction component (18) rotates around one end of the support plate (15), and the core extraction component (18) drives the protective frame (19) to rotate; Step 4: The core extraction assembly (18) drives the drilling rod (20) to rotate, so that the drilling rod (20) performs core extraction at an appropriate angle. When the movable plate (24) moves, it drives the core extraction mechanism to adjust its position, so that the core extraction mechanism can adjust its position and angle according to actual conditions. The damping adjustment mechanism and the core extraction mechanism work together to achieve efficient and stable extraction of the core.

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