Efficient automatic corer for marine geological drilling

Abstract

The invention belongs to the technical field of marine geological exploration, and provides an efficient automatic corer for marine geological drilling, which comprises a base, a working head is arranged on the base, a lifting assembly for controlling the height of the working head is arranged between the working head and the base, and the bottom of the working head is in transmission connection with a connecting shaft. The connecting shaft is detachably connected with a drill rod through an automatic connecting assembly. And the switching wheel is horizontally and rotationally connected to the base through a switching driving part, a plurality of containing holes are vertically formed in the top of the switching wheel and used for containing working heads, and the switching driving part is used for enabling the drill rod in one containing hole to be located below the connecting shaft. The device can achieve the purpose of automatically sampling for multiple times when entering water once, and the working efficiency of marine geological drilling coring is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of marine geological exploration, and in particular relates to a high-efficiency automatic coring device for marine geological drilling. Background Art

[0002] In the field of marine geological exploration, drilling sampling is the most widely used exploration method. International research on marine drilling sampling technology began in the 1970s. Through practical applications in marine drilling programs such as DSDP, ODP, and IODP, various types of drilling sampling tools have been developed and successfully used in deep-sea drilling sampling work around the world.

[0003] Traditional marine geological drilling corers have the following defects: 1. Low efficiency: the entire drill pipe needs to be recovered after a single coring, which is time-consuming and cannot be operated continuously; 2. Poor sample integrity: the core is easily broken by seawater erosion or pressure changes during the recovery process; 3. High dependence on manual labor: operations such as switching the core tube rely on manual intervention, which is difficult to adapt to the complex deep-sea environment. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-efficiency automatic coring device for marine geological drilling to solve the above-mentioned problems and achieve the purpose of automatically taking multiple samples in one launch.

[0005] To achieve the above-mentioned object, the present invention provides the following solution: a high-efficiency automatic coring device for marine geological drilling, comprising:

[0006] A base, a working head is provided on the base, a lifting assembly for controlling the height of the working head is provided between the working head and the base, the bottom of the working head is transmission-connected with a connecting shaft, and the connecting shaft is detachably connected to a drill rod through an automatic connecting assembly;

[0007] A switching wheel is horizontally rotatably connected to the base through a switching drive member. A plurality of placement holes are vertically opened on the top of the switching wheel. The placement holes are used to place the working head. The switching drive member is used to make the drill rod in one of the placement holes be located below the connecting shaft.

[0008] Preferably, the switching drive member includes a fixed frame fixedly connected to the base, the switching wheel is rotatably connected in the fixed frame, and a second motor is vertically fixedly connected to the top of the fixed frame. The second motor is coaxially arranged with the switching wheel, and the second motor is transmission-connected to the switching wheel.

[0009] Preferably, a second working groove is formed on a side wall of the fixing frame close to the working head, and the second working groove is used to avoid the drill rod;

[0010] A first working groove is defined between the top and bottom ends of the switching wheel, and the first working groove is used to avoid the drill rod.

[0011] Preferably, a plurality of jacks are provided at the bottom of the placement hole, and the plurality of jacks are adapted to the drill bits at the bottom of the drill rod.

[0012] Preferably, the lifting assembly includes a support plate vertically fixedly connected to the base, a first screw rod is vertically rotatably connected inside the support plate, one end of the first screw rod is transmission-connected to a first motor, and also includes a sliding rod vertically fixedly connected to the base, a movable plate is slidably sleeved on the sliding rod, one end of the movable plate is threadedly sleeved on the first screw rod, and the other end of the movable plate is fixedly connected to the working head.

[0013] Preferably, a third motor is fixedly connected inside the working head, and the third motor is transmission-connected to the connecting shaft.

[0014] Preferably, the automatic connection assembly includes a transition shaft coaxially fixedly connected to the top of the drill pipe, the top of the transition shaft is provided with a connection groove adapted to the connection shaft, and an automatic clamping member is provided between the connection groove and the connection shaft;

[0015] The automatic connecting part includes several horizontal sliding grooves opened on the side walls of the connecting shaft, and the sliding grooves are respectively slidably connected with a card block, a spring is abutted between the card block and the bottom of the sliding groove, and the bottom of the sliding groove is fixedly connected with an electromagnet, and the electromagnet is arranged corresponding to the card block. Several card slots are opened on the side walls of the connecting groove, and several of the card slots are respectively adapted to several of the card blocks.

[0016] Preferably, a plurality of flexible metal plates are slidably connected to the side wall of the drill rod along the axis of the drill rod, a lower pressure ring is fixedly connected between the tops of the plurality of flexible metal plates, and a lower pressure assembly for pressing down the lower pressure ring is provided at the bottom of the working head;

[0017] A plurality of exit holes are opened on the bottom of the inner wall of the drill rod. When the flexible metal plates move downward under the downward pressure of the lower pressure ring, the bottom ends of the flexible metal plates pass through the exit holes and are located at the inner bottom of the drill rod.

[0018] Preferably, the downward pressure assembly includes several connecting rods vertically slidably connected to the inside of the working head, an upper pressure ring is fixedly connected between the bottoms of several of the connecting rods, the upper pressure ring and the lower pressure ring are arranged correspondingly, and a downward pressure driving member is arranged between several of the connecting rods and the working head.

[0019] Preferably, the downward driving member includes a connecting plate fixedly connected between the tops of several connecting rods, and the connecting plate is located above the third motor; the inner top of the working head is vertically fixedly connected to the fourth motor, and the output shaft of the fourth motor is coaxially fixedly connected to the second screw rod, and the second screw rod is threadedly sleeved on the connecting plate.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects: the main function of the base is to make the corer stably on the seabed; the main function of the lifting assembly is to drive the working head to rise and fall, complete the action of connecting and releasing the drill rod, and at the same time drive the drill rod to rotate and descend to complete the coring work; the main function of the automatic connection assembly is to complete the automatic connection or automatic release of the connecting shaft and the drill rod, thereby achieving the purpose of automatically replacing the drill rod and facilitating automatic multiple sampling underwater; the main function of the switching drive member is to drive the switching wheel to rotate so that a placement hole is located below the connecting shaft, facilitating the connecting shaft to grab or release the drill rod. Overall, the present invention, by providing a switching wheel that can carry multiple drill rods, allows the corer to carry multiple drill rods when it is launched into the water at one time, and at the same time, the automatic connection assembly is provided to realize the automatic connection and release of the drill rod by the working head underwater, thereby achieving the effect of completing multiple automatic coring tasks in one launch, effectively improving the working efficiency of the corer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 is a schematic diagram of a corer of the present invention;

[0023] Figure 2 is a cross-sectional view of the switching wheel of the present invention;

[0024] Figure 3 A top view of the switching wheel of the present invention;

[0025] Figure 4 is a cross-sectional view of the working head of the present invention;

[0026] Figure 5 is a cross-sectional view of a drill pipe and an automatic connection assembly according to the present invention;

[0027] Figure 6 for Figure 5 A partial enlarged view in FIG;

[0028] Among them, 1. base; 2. working hole; 3. slide rod; 4. first screw rod; 5. support plate; 6. first motor; 7. movable plate; 8. working head; 9. upper pressure ring; 10. connecting shaft; 11. transition shaft; 12. lower pressure ring; 13. drill rod; 14. drill bit; 15. fixed frame; 16. second motor; 17. switching wheel; 18. placement hole; 19. first working slot; 20. socket; 21. flexible metal plate; 22. block; 23. slot; 24. spring; 25. electromagnet; 26. slide slot; 27. third motor; 28. fourth motor; 29. ​​second screw rod; 30. connecting plate; 31. connecting rod; 32. second working slot. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1-6 The present invention provides a high-efficiency automatic coring device for marine geological drilling, comprising:

[0032] A base 1 is provided with a working head 8, a lifting assembly for controlling the height of the working head 8 is provided between the working head 8 and the base 1, a connecting shaft 10 is connected to the bottom of the working head 8 in a transmission manner, and the connecting shaft 10 is detachably connected to the drill rod 13 through an automatic connecting assembly;

[0033] The switching wheel 17 is connected to the base 1 through a horizontal rotation of the switching drive member. A plurality of placement holes 18 are vertically opened on the top of the switching wheel 17. The placement holes 18 are used to place the working head 8. The switching drive member is used to make the drill rod 13 in a placement hole 18 be located below the connecting shaft 10.

[0034] The main function of the base 1 is to keep the corer stable on the seabed; the main function of the lifting assembly is to drive the working head 8 to rise and fall, completing the action of connecting and releasing the drill rod 13, and at the same time drive the drill rod 13 to rotate and descend to complete the coring operation; the main function of the automatic connection assembly is to complete the automatic connection or automatic release of the connecting shaft 10 and the drill rod 13, thereby achieving the purpose of automatically replacing the drill rod 13 and facilitating automatic multiple sampling underwater; the main function of the switching drive member is to drive the switching wheel 17 to rotate, so that a placement hole 18 is located below the connecting shaft 10, facilitating the connecting shaft 10 to grasp or release the drill rod 13. Overall, by providing a switching wheel that can carry multiple drill rods, the present invention allows the corer to carry multiple drill rods during a single launch. At the same time, the automatic connection assembly is provided to enable the working head to automatically connect and release drill rods underwater, thereby achieving the effect of completing multiple automatic coring operations in a single launch, effectively improving the working efficiency of the corer.

[0035] To further optimize the solution, a working hole 2 is opened on the base 1, and the working hole 2 is coaxially arranged with the connecting shaft 10, so as to facilitate the drill rod 13 to pass through the base 1 to perform coring work on the seabed.

[0036] A further optimized solution is that the switching drive component includes a fixed frame 15 fixedly connected to the base 1, a switching wheel 17 is rotatably connected in the fixed frame 15, and a second motor 16 is vertically fixedly connected to the top of the fixed frame 15. The second motor 16 is coaxially arranged with the switching wheel 17, and the second motor 16 is transmission-connected to the switching wheel 17.

[0037] like Figure 1 and Figure 3 As shown, during underwater operation, the switching wheel 17 is driven to rotate by the second motor 16, so that a placement hole 18 on the switching wheel 17 can be rotated to the bottom of the connecting shaft 10, so as to facilitate the connection of the drill rod 13 in the placement hole 18 with the connecting shaft 10, or to facilitate the placement of the drill rod 13 on the connecting shaft 10 into the placement hole 18.

[0038] like Figure 3 As shown, when the placement hole 18 is rotated to the inner side of the fixing frame 15, the top of the fixing frame 15 can close the top opening of the placement hole 18 to prevent the drill rod 13 from being lost.

[0039] As a further optimization solution, a second working groove 32 is provided on one side wall of the fixing frame 15 close to the working head 8. The second working groove 32 is used to avoid the drill rod 13.

[0040] A first working groove 19 is defined between the top and bottom ends of the switching wheel 17 . The first working groove 19 is used to avoid the drill rod 13 .

[0041] like Figure 1-Figure 3As shown, in order to avoid interference of the switching wheel 17 and the fixed frame 15 on the core drilling operation, a first working groove 19 and a second working groove 32 are provided to form a vertical downward avoidance structure on the switching wheel 17 and the fixed frame 15, so as to facilitate the drill rod 13 to drill downward into the seabed.

[0042] To further optimize the solution, a plurality of insertion holes 20 are provided at the bottom of the placement hole 18 , and the plurality of insertion holes 20 are adapted to the drill bit 14 at the bottom of the drill rod 13 .

[0043] like Figure 2 As shown, after the drill rod 13 is placed in the placement hole 18, the drill bit 14 is inserted into the insertion hole 20 by rotating the drill rod 13, so that the drill rod 13 can be stably placed in the placement hole 18 and the drill rod 13 can be prevented from rotating in the placement hole 18, which is beneficial to the connection between the connecting shaft 10 and the drill rod 13.

[0044] To further optimize the solution, the lifting assembly includes a support plate 5 vertically fixedly connected to the base 1, a first screw rod 4 is vertically rotatably connected inside the support plate 5, one end of the first screw rod 4 is transmission-connected to the first motor 6, and also includes a slide rod 3 vertically fixedly connected to the base 1, a movable plate 7 is slidably sleeved on the slide rod 3, one end of the movable plate 7 is threadedly sleeved on the first screw rod 4, and the other end of the movable plate 7 is fixedly connected to the working head 8.

[0045] like Figure 1 As shown, when the working head 8 needs to be raised, the first motor 6 is controlled to rotate to drive the first screw 4 to rotate. The rotation of the first screw 4 drives the movable plate 7 to move upward through the thread transmission, thereby driving the working head 8 to move upward. Similarly, the working head 8 can be controlled to move downward by controlling the first motor 6 to rotate in the reverse direction.

[0046] According to a further optimized solution, a third motor 27 is fixedly connected to the working head 8 , and the third motor 27 is in transmission connection with the connecting shaft 10 .

[0047] Further optimized solution, the automatic connection assembly includes a transition shaft 11 coaxially fixedly connected to the top of the drill rod 13, the top of the transition shaft 11 is provided with a connection groove adapted to the connection shaft 10, and an automatic clamping member is provided between the connection groove and the connection shaft 10;

[0048] The automatic connecting parts include several horizontal sliding grooves 26 opened on the side walls of the connecting shaft 10, and the sliding grooves 26 are respectively slidably connected with the card blocks 22. A spring 24 is abutted between the card blocks 22 and the bottom of the sliding groove 26. The bottom of the sliding groove 26 is fixedly connected with an electromagnet 25. The electromagnet 25 is arranged corresponding to the card block 22. Several card slots 23 are opened on the side walls of the connecting groove, and several card slots 23 are respectively adapted to several card blocks 22.

[0049] like Figure 1 and Figure 5As shown, the block 22 is an iron piece, and the electromagnet 25 can attract the block 22 to retract into the slide groove 26 when it is energized.

[0050] When the drill rod 13 needs to be released, the control electromagnet 25 is energized, and the electromagnet 25 attracts the clamping block 22 to slide into the chute 26 and disengage from the clamping slot 23. After that, the working head 8 moves upward, and the connecting shaft 10 can be disengaged from the connecting slot, thereby releasing the drill rod 13.

[0051] When it is necessary to connect the drill rod 13, first control the electromagnet 25 to be energized, and then insert the connecting shaft 10 into the connecting groove. After that, the electromagnet 25 is powered off, and then the connecting shaft 10 is slowly rotated. When the connecting shaft 10 rotates to the point where the block 22 corresponds to the slot 23, the block 22 is inserted into the slot 23 under the elastic force of the spring 24, thereby realizing the connection between the connecting shaft 10 and the transition shaft 11, and then realizing the connection with the drill rod 13.

[0052] In a further optimized solution, a plurality of flexible metal plates 21 are slidably connected to the side wall of the drill rod 13 along the axis of the drill rod 13, a lower pressure ring 12 is fixedly connected between the tops of the plurality of flexible metal plates 21, and a lower pressure assembly for pressing down the lower pressure ring 12 is provided at the bottom of the working head 8;

[0053] The bottom of the inner wall of the drill rod 13 is provided with a plurality of holes. When the plurality of flexible metal plates 21 move downward under the downward pressure of the lower pressure ring 12 , the bottom ends of the flexible metal plates 21 pass through the holes and are located at the inner bottom of the drill rod 13 .

[0054] like Figure 5 As shown, after coring is completed, the lower pressure ring 12 moves downward under the action of the lower pressure assembly, driving several flexible metal plates 21 to move downward. The bottom of the flexible metal plate 21 extends from the outlet hole and inserts into the inner side of the drill rod 13, playing the role of fixing the core.

[0055] A further optimized solution is that the downward pressure assembly includes several connecting rods 31 vertically slidably connected to the inside of the working head 8, an upper pressure ring 9 is fixedly connected between the bottoms of the several connecting rods 31, the upper pressure ring 9 and the lower pressure ring 12 are arranged correspondingly, and a downward pressure drive member is arranged between the several connecting rods 31 and the working head 8.

[0056] A further optimized solution is that the downward driving component includes a connecting plate 30 fixedly connected between the tops of several connecting rods 31, and the connecting plate 30 is located above the third motor 27; the inner top of the working head 8 is vertically fixedly connected to the fourth motor 28, and the output shaft of the fourth motor 28 is coaxially fixedly connected to the second screw rod 29, and the second screw rod 29 is threadedly sleeved on the connecting plate 30.

[0057] like Figure 1 and Figure 4As shown, when the flexible metal plate 21 needs to be inserted into the drill rod 13, the fourth motor 28 is controlled to rotate, and the fourth motor 28 drives the second screw rod 29 to rotate. The connecting plate 30 moves downward under the threaded transmission of the second screw rod 29, and the upper pressure ring 9 is pushed downward through the connecting rod 31. The upper pressure ring 9 moves downward and fits into the lower pressure ring 12 and pushes the lower pressure ring 12 downward, and finally achieves the effect of the flexible metal plate 21 extending from the exit hole.

[0058] The working process of this embodiment is as follows: In this embodiment, four groups of placement holes 18 are provided in the switching wheel 17. Before use, the drill rods 13 are respectively placed in the four groups of placement holes 18.

[0059] The corer is lowered to the seabed, and the switching wheel 17 is driven to rotate so that a placement hole 18 is located below the connecting shaft 10. The first motor 6 is then used to control the working head 8 to move downward, so that the connecting shaft 10 is inserted into the transition shaft 11. The connecting shaft 10 is then slowly rotated so that the clamping block 22 is inserted into the clamping groove 23, completing the connection of the drill pipe 13. The working head 8 is then raised, and the drill pipe 13 is removed from the placement hole 18. The switching wheel 17 is then rotated again to expose the first working groove 19, and the working head 8 is lowered again to complete the coring.

[0060] After coring is completed, the fourth motor 28 is controlled to insert the flexible metal plate 21 into the drill rod 13, and then the working head 8 is controlled to lift, the drill rod is taken out, and then the switching wheel 17 is rotated to expose the idle placement hole 18, and then the drill rod 13 is placed in the placement hole 18.

[0061] Move the corer to the next working position and repeat the above-mentioned action to complete the coring work of the next drill rod 13.

[0062] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0063] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A high-efficiency automatic coring device for marine geological drilling, characterized in that: include: A base (1), a working head (8) is provided on the base (1), a lifting assembly for controlling the height of the working head (8) is provided between the working head (8) and the base (1), a connecting shaft (10) is connected to the bottom of the working head (8) in a transmission manner, and the connecting shaft (10) is detachably connected to a drill rod (13) via an automatic connecting assembly; A switching wheel (17) is horizontally rotatably connected to the base (1) via a switching drive member, a plurality of placement holes (18) are vertically opened on the top of the switching wheel (17), the placement holes (18) are used to place the working head (8), and the switching drive member is used to position the drill rod (13) in one of the placement holes (18) below the connecting shaft (10).

2. The high-efficiency automatic coring device for marine geological drilling according to claim 1, characterized in that: The switching drive member comprises a fixed frame (15) fixedly connected to the base (1); the switching wheel (17) is rotatably connected in the fixed frame (15); a second motor (16) is vertically fixedly connected to the top of the fixed frame (15); the second motor (16) and the switching wheel (17) are coaxially arranged, and the second motor (16) and the switching wheel (17) are transmission-connected.

3. The high-efficiency automatic coring device for marine geological drilling according to claim 2, characterized in that: A second working groove (32) is provided on a side wall of the fixing frame (15) close to the working head (8), and the second working groove (32) is used to avoid the drill rod (13); A first working groove (19) is provided between the top and bottom ends of the switching wheel (17), and the first working groove (19) is used to avoid the drill rod (13).

4. The high-efficiency automatic coring device for marine geological drilling according to claim 1, characterized in that: A plurality of insertion holes (20) are provided at the bottom of the placement hole (18), and the plurality of insertion holes (20) are adapted to the drill bit (14) at the bottom of the drill rod (13).

5. The high-efficiency automatic coring device for marine geological drilling according to claim 1, characterized in that: The lifting assembly includes a support plate (5) vertically fixedly connected to the base (1), a first screw rod (4) vertically rotatably connected inside the support plate (5), one end of the first screw rod (4) being transmission-connected to a first motor (6), and a slide rod (3) vertically fixedly connected to the base (1), a movable plate (7) being slidably sleeved on the slide rod (3), one end of the movable plate (7) being threadedly sleeved on the first screw rod (4), and the other end of the movable plate (7) being fixedly connected to the working head (8).

6. The high-efficiency automatic coring device for marine geological drilling according to claim 1, characterized in that: A third motor (27) is fixedly connected inside the working head (8), and the third motor (27) is transmission-connected to the connecting shaft (10).

7. The high-efficiency automatic coring device for marine geological drilling according to claim 1, characterized in that: The automatic connection assembly comprises a transition shaft (11) coaxially fixedly connected to the top of the drill rod (13); a connection groove adapted to the connection shaft (10) is provided on the top of the transition shaft (11); and an automatic clamping member is provided between the connection groove and the connection shaft (10); The automatic clamping part comprises a plurality of slide grooves (26) horizontally opened on the side wall of the connecting shaft (10), wherein the slide grooves (26) are respectively slidably connected with clamping blocks (22), a spring (24) is abutted between the clamping blocks (22) and the bottom of the slide groove (26), an electromagnet (25) is fixedly connected to the bottom of the slide groove (26), and the electromagnet (25) is correspondingly arranged with the clamping block (22), and a plurality of clamping grooves (23) are opened on the side wall of the connecting groove, and the plurality of clamping grooves (23) are respectively adapted to the plurality of clamping blocks (22).

8. The high-efficiency automatic coring device for marine geological drilling according to claim 6, characterized in that: A plurality of flexible metal plates (21) are slidably connected to the side wall of the drill rod (13) along the axis of the drill rod (13), a lower pressure ring (12) is fixedly connected between the tops of the plurality of flexible metal plates (21), and a lower pressure assembly for pressing down the lower pressure ring (12) is provided at the bottom of the working head (8); A plurality of exit holes are provided on the bottom of the inner wall of the drill rod (13). When the plurality of flexible metal plates (21) move downward under the downward pressure of the lower pressure ring (12), the bottom ends of the flexible metal plates (21) pass through the exit holes and are located at the inner bottom of the drill rod (13).

9. The high-efficiency automatic coring device for marine geological drilling according to claim 8, characterized in that: The pressing assembly comprises a plurality of connecting rods (31) vertically slidably connected to the inside of the working head (8); an upper pressing ring (9) is fixedly connected between the bottoms of the plurality of connecting rods (31); the upper pressing ring (9) and the lower pressing ring (12) are arranged correspondingly; and a pressing driving member is arranged between the plurality of connecting rods (31) and the working head (8).

10. The high-efficiency automatic coring device for marine geological drilling according to claim 9, characterized in that: The downward driving member includes a connecting plate (30) fixedly connected between the tops of several connecting rods (31), and the connecting plate (30) is located above the third motor (27); the inner top of the working head (8) is vertically fixedly connected to the fourth motor (28), and the output shaft of the fourth motor (28) is coaxially fixedly connected to the second screw rod (29), and the second screw rod (29) is threadedly sleeved on the connecting plate (30).

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