Self-locking electrically conductive top drive conversion structure

Abstract

This invention discloses a self-locking electrically conductive top drive conversion structure, relating to the field of intelligent drill pipe technology. It includes a conversion sub body, an electrically conductive drill pipe, and a top drive. The conversion sub body has a water inlet, which communicates with the electrically conductive drill pipe and the top drive. An upper thread is connected to the top of the conversion sub body, which is threadedly connected to the top drive. A lower thread is provided on the outer wall of the bottom of the conversion sub body. A movable conductive component is located above the lower thread, and a middle thread is located above the movable conductive component. The conversion sub body is threadedly connected to the electrically conductive drill pipe through the lower and middle threads. An unlocking component is also connected to the conversion sub body. Through this method, this invention, while ensuring power and signal transmission and torque transmission, transmits signals from the high-speed rotating electrically conductive drill pipe to the non-rotating electrical connection part for collection by the ground system.

Description

Technical Field

[0001] This invention relates to the field of intelligent drill pipe technology, specifically a self-locking electrically conductive top drive conversion structure. Background Technology

[0002] In the late 1980s and early 1990s, drilling technology raised the need to solve the problem of simultaneously transmitting measurement and control data in real time and bidirectionally at high speed while drilling, and also to supply power to the well while drilling. Thus, research on electrically conductive drill pipes began.

[0003] With the continuous research on electrically conductive drill pipes, the connection between the electrically conductive drill pipe and the top drive has become an urgent problem to be solved.

[0004] Therefore, a self-locking electrically conductive top drive conversion structure is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a self-locking electrically conductive top drive conversion structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A self-locking electrically conductive top drive conversion structure includes a conversion sub body, an electrically conductive drill rod, and a top drive. The conversion sub body has a water inlet, which communicates with the electrically conductive drill rod and the top drive. An upper thread is connected to the top of the conversion sub body, and this upper thread is threaded to the top drive. A lower thread is provided on the outer wall of the bottom of the conversion sub body. A movable conductive component is located above the lower thread, and a middle thread is located above the movable conductive component. The conversion sub body is threaded to the electrically conductive drill rod through the lower and middle threads, and the movable conductive component contacts the conductive insert of the electrically conductive drill rod. A self-locking component is connected to the conversion sub body, and this self-locking component is connected to the electrically conductive drill rod and the top drive. An unlocking component is also connected to the conversion sub body.

[0008] Furthermore, the movable conductive component includes an electric slip ring, an electric connector, a connecting wire, and a wire hole. The inner ring of the electric slip ring is installed on the upper end of the side wall of the conversion sub body, the electric connector is installed on the lower outer wall of the conversion sub body, the conversion sub body has a wire hole, a connecting wire is installed in the wire hole, the bottom of the connecting wire is connected to the top of the electric connector, and the top of the connecting wire is connected to the inner ring of the electric slip ring.

[0009] Furthermore, the electrical connector is located between the lower thread and the middle thread, and the bottom of the electrical connector is in contact with the conductive connector of the electrically conductive drill rod.

[0010] Furthermore, the self-locking assembly includes an upper limit straight groove, a T-shaped groove, a T-shaped sleeve plate, a spring, a lower limit straight groove, a movable plate, a triangular limit block, a straight insertion plate, and a straight sliding groove. The bottom of the top drive has upper limit straight grooves evenly spaced along the circumferential direction. The body of the conversion short section has T-shaped grooves evenly spaced along the circumferential direction. A T-shaped sleeve plate is installed in the T-shaped groove. A spring is fixed at the bottom inside the T-shaped sleeve plate. A movable plate is fixed at the top of the spring and slides against the inner wall of the T-shaped sleeve plate. A triangular limit block that inserts into the upper limit straight groove is fixed at the top of the movable plate. A straight insertion plate is fixed at the bottom of the movable plate. A straight sliding groove that slides against the straight insertion plate is opened at the bottom of the T-shaped sleeve plate and the bottom inside the T-shaped groove. The top of the electrically conductive drill rod has lower limit straight grooves evenly spaced along the circumferential direction, and the lower limit straight groove and the straight insertion plate are inserted into each other.

[0011] Furthermore, the inclined surface of the triangular limiting block is set towards the opening direction of the top drive.

[0012] Furthermore, the T-shaped groove is offset from the wire hole.

[0013] Furthermore, when the spring returns to its initial state, the triangular limiting block is inserted into the upper limit straight groove, and at the same time, the bottom of the straight insertion plate is at the middle of the lower limit straight groove.

[0014] Furthermore, the unlocking component includes a first semicircular plate, an electromagnet, a second semicircular plate, a first connecting seat, and a second connecting seat. The first connecting seat is fixed to one end of the first semicircular plate, and the second connecting seat is fixed to one end of the second semicircular plate. The first connecting seat is rotatably connected to the second connecting seat via a riveting shaft. Electromagnets are installed at equal intervals on the outer walls of the first and second semicircular plates, and the number of electromagnet groups is the same as the number of movable plate groups.

[0015] Furthermore, the conversion section body is also connected to a guide component for guiding the movement of the unlocking component.

[0016] Furthermore, the guiding assembly includes a guide block and a straight groove. The guide block is installed on the outer wall of the conversion section body. A straight groove is provided on the inner wall of the first semicircular plate or the second semicircular plate. The guide block and the straight groove are slidably connected in contact. When the guide block and the straight groove are in contact, the electromagnet is located on the outer side of the adjacent movable plate.

[0017] The beneficial effects of this invention are:

[0018] 1. In this invention, the electrically conductive drill rod is in close contact with the electrical connector of the movable conductive component. The signal from the electrically conductive drill rod is transmitted to the slip ring through the electrical connector and connecting wire, and then transmitted to the non-rotating ground acquisition system through the slip ring, thus realizing power and signal transmission. At the same time, the top drive drives the electrically conductive drill rod to rotate through the conversion short section body. The conversion short section body ensures the transmission of torque. Under the premise of ensuring power and signal transmission and torque transmission, the signal in the high-speed rotating electrically conductive drill rod is transmitted to the non-rotating electrical connection part for the ground system to collect.

[0019] 2. When the top drive and the conversion sub body are connected by the upper thread, the top drive pushes the triangular limiting block of the self-locking assembly to move into the T-shaped sleeve plate. After the top drive and the upper thread are connected, the spring restoring force pushes the movable plate upward. The movable plate pushes the triangular limiting block to move into the upper limit straight groove. The triangular limiting block locks the top drive, preventing it from opening counterclockwise. The upper thread also prevents the top drive from rotating clockwise, thus preventing the top drive from reversing. When the triangular limiting block moves into the upper limit straight groove, the bottom of the straight insertion plate is at the middle of the lower limit straight groove. The straight insertion plate and the lower limit straight groove lock the electrically conductive drill rod, preventing it from reversing. This achieves self-locking of the electrically conductive drill rod and the top drive at the upper and lower ends of the conversion sub body, ensuring the stability of the connection between the electrically conductive drill rod and the top drive and the conversion sub body. Both the electrically conductive drill rod and the top drive can be reversed, which is beneficial for drilling.

[0020] 3. In this invention, the first semicircular plate of the unlocking component is sleeved on the outside of the conversion short section body, and then the second semicircular plate is rotated to fit into contact with the conversion short section body. Then, the electromagnet is energized to generate magnetism, and then the first and second semicircular plates are pushed downward to move. The first and second semicircular plates drive the electromagnet that generates magnetism to move downward. The electromagnet that generates magnetism drives the movable plate to move downward. The movable plate drives the triangular limit block to separate from the upper limit straight groove, thereby realizing the unlocking of the upper end of the self-locking component, which facilitates the separation of the top drive from the conversion short section body.

[0021] 4. When the first semicircular plate of the present invention contacts the conversion short section body, the guide block and the straight groove of the guide component contact each other. The guide block and the straight groove guide the first semicircular plate or the second semicircular plate, realize the moving guidance processing of the unlocking component, realize the electromagnet of the unlocking component to make vertical movement on the outside of the adjacent straight insertion plate, and ensure the driving stability of the unlocking component on the straight insertion plate. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 The structural three-dimensional representation of the present invention Figure 1 ;

[0024] Figure 2 This is a front view of the present invention;

[0025] Figure 3 This is a right view of the present invention;

[0026] Figure 4 The structural three-dimensional representation of the present invention Figure 2 ;

[0027] Figure 5 The structural three-dimensional representation of the present invention Figure 3 ;

[0028] Figure 6 For the present invention along Figure 2 A sectional view along the AA direction;

[0029] Figure 7 For the present invention along Figure 3 BB direction sectional view;

[0030] Figure 8 for Figure 6 Enlarged view of the structure at point C;

[0031] Figure 9 for Figure 6 Enlarged view of the structure at point D;

[0032] Figure 10 for Figure 7 Enlarged view of the structure at point E.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Converter short section body 2. Electric slip ring 3. First semicircular plate 4. Electromagnet 5. Electrically conductive drill rod 6. Second semicircular plate 7. Top drive 8. Guide block 9. Straight groove 10. First connecting seat 11. Second connecting seat 12. Upper limit straight groove 13. T-slot 14. T-shaped sleeve 15. Spring 16. Lower limit straight groove 17. Lower thread 18. Electrical connector 19. Middle thread 20. Connecting wire 21. Wire hole 22. Upper thread 23. Water eye 24. Movable plate 25. Triangular limit block 26. Straight insertion plate 27. Straight slide groove. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The present invention will be further described below with reference to embodiments.

[0037] Example 1

[0038] like Figure 1-10 As shown, the self-locking electrically conductive top drive conversion structure includes a conversion sub body 1, an electrically conductive drill rod 5, and a top drive 7. The conversion sub body 1 has a water hole 23, which communicates with the electrically conductive drill rod 5 and the top drive 7. The top of the conversion sub body 1 is connected to an upper thread 22, which is threadedly connected to the top drive 7. The bottom outer wall of the conversion sub body 1 has a lower thread 17. A movable conductive component is provided above the lower thread 17. A middle thread 19 is provided above the movable conductive component. The conversion sub body 1 is threadedly connected to the electrically conductive drill rod 5 through the lower thread 17 and the middle thread 19. The movable conductive component is in contact with the conductive plug of the electrically conductive drill rod 5. The conversion sub body 1 is connected to a self-locking component, which is connected to the electrically conductive drill rod 5 and the top drive 7. The conversion sub body 1 is also connected to an unlocking component.

[0039] The movable conductive assembly includes an electric slip ring 2, an electric connector 18, a connecting wire 20, and a wire hole 21. The inner ring of the electric slip ring 2 is installed on the upper side wall of the conversion sub body 1. The electric connector 18 is installed on the lower outer wall of the conversion sub body 1. The conversion sub body 1 has a wire hole 21. The connecting wire 20 is installed in the wire hole 21. The bottom of the connecting wire 20 is connected to the top of the electric connector 18. The top of the connecting wire 20 is connected to the inner ring of the electric slip ring 2. The electric connector 18 is located between the lower thread 17 and the middle thread 19, and the bottom of the electric connector 18 is in contact with the conductive plug of the electrically conductive drill rod 5.

[0040] The electrically conductive drill rod 5 is in contact with the electrical connector 18 of the movable conductive component. The signal from the electrically conductive drill rod 5 is transmitted to the slip ring 2 through the electrical connector 18 and the connecting wire 20, and then transmitted to the non-rotating ground acquisition system through the slip ring 2, thus realizing power and signal transmission. At the same time, the top drive 7 drives the electrically conductive drill rod 5 to rotate through the conversion short section body 1. The conversion short section body 1 ensures the transmission of torque. Under the premise of ensuring power and signal transmission and torque transmission, the signal in the high-speed rotating electrically conductive drill rod 5 is transmitted to the non-rotating electrical connection part for the ground system to collect.

[0041] Example 2

[0042] Based on Example 1, see Figure 6-10 As shown, the self-locking assembly includes an upper limit straight groove 12, a T-shaped groove 13, a T-shaped sleeve plate 14, a spring 15, a lower limit straight groove 16, a movable plate 24, a triangular limit block 25, a straight insertion plate 26, and a straight slide groove 27. The top drive 7 has upper limit straight grooves 12 evenly spaced along the circumferential direction at its bottom. The conversion short section body 1 has T-shaped grooves 13 evenly spaced along the circumferential direction at its top. A T-shaped sleeve plate 14 is installed in the T-shaped groove 13. A spring 15 is fixed to the bottom of the T-shaped sleeve plate 14. A movable plate 24, which slides and fits against the inner wall of the T-shaped sleeve plate 14, is fixed to the top of the spring 15. A triangular limit block 25, which inserts into the upper limit straight groove 12, is fixed to the top of the movable plate 24. 5. A straight insertion plate 26 is fixed at the bottom of the movable plate 24. A straight sliding groove 27 is opened at the bottom of the T-shaped sleeve plate 14 and the bottom of the T-shaped groove 13 to slide in contact with the straight insertion plate 26. A lower limit straight groove 16 is opened at equal intervals along the circumferential direction at the top of the electric conductive drill rod 5. The lower limit straight groove 16 and the straight insertion plate 26 are inserted into each other. The inclined surface of the triangular limit block 25 is set towards the opening direction of the top drive 7. The T-shaped groove 13 is opened in a staggered manner with the wire hole 21. When the spring 15 returns to the initial state, the triangular limit block 25 is inserted into the upper limit straight groove 12. The top of the triangular limit block 25 is located at the middle of the upper limit straight groove 12, and at the same time, the bottom of the straight insertion plate 26 is located at the middle of the lower limit straight groove 16.

[0043] When the top drive 7 is connected to the upper thread 22 of the conversion short section body 1, the top drive 7 pushes the triangular limit block 25 of the self-locking assembly to move into the T-shaped sleeve plate 14, and the bottom of the straight insertion plate 26 is above the bottom of the lower limit straight groove 16. After the top drive 7 and the upper thread 22 are connected, the restoring force of the spring 15 pushes the movable plate 24 to move upward. The movable plate 24 pushes the triangular limit block 25 to move into the upper limit straight groove 12. The triangular limit block 25 locks the top drive 7, which can prevent the top drive 7 from opening counterclockwise, and the upper thread 22 prevents the top drive 7 from opening clockwise. The needle rotation prevents the top drive 7 from reversing. When the triangular limit block 25 moves into the upper limit straight groove 12, the bottom of the straight insertion plate 26 is at the middle of the lower limit straight groove 16. The straight insertion plate 26 and the lower limit straight groove 16 lock the electrically conductive drill rod 5, preventing it from reversing. This achieves self-locking of the electrically conductive drill rod 5 and the top drive 7 at the upper and lower ends of the conversion short section body 1, ensuring the stability of the connection between the electrically conductive drill rod 5 and the top drive 7 and the conversion short section body 1. Both the electrically conductive drill rod 5 and the top drive 7 can be reversed, which is beneficial for drilling.

[0044] Example 3

[0045] Based on Example 2, see Figure 1-5As shown, the unlocking assembly includes a first semicircular plate 3, an electromagnet 4, a second semicircular plate 6, a first connecting seat 10, and a second connecting seat 11. The first connecting seat 10 is fixed to one end of the first semicircular plate 3, and the second connecting seat 11 is fixed to one end of the second semicircular plate 6. The first connecting seat 10 is rotatably connected to the second connecting seat 11 through a riveting shaft. Electromagnets 4 are installed at equal intervals on the outer walls of the first semicircular plate 3 and the second semicircular plate 6, and the number of sets of electromagnets 4 is the same as the number of sets of movable plate 24.

[0046] The first semicircular plate 3 of the unlocking component is fitted onto the outside of the conversion short section body 1. Then, the second semicircular plate 6 is rotated to fit into contact with the conversion short section body 1. Then, the electromagnet 4 is energized to generate magnetism. The first semicircular plate 3 and the second semicircular plate 6 are pushed downward to move. The first semicircular plate 3 and the second semicircular plate 6 drive the electromagnet 4, which generates magnetism, to move downward. The electromagnet 4 generates magnetism and drives the movable plate 24 to move downward. The movable plate 24 drives the triangular limit block 25 to separate from the upper limit straight groove 12, thereby unlocking the upper end of the self-locking component and facilitating the separation of the top drive 7 from the conversion short section body 1.

[0047] Example 4

[0048] Based on Example 3, see Figure 2 and 4 As shown, the conversion short section body 1 is also connected to a guide component for guiding the movement of the unlocking component. The guide component includes a guide block 8 and a straight groove 9. The guide block 8 is installed on the outer wall of the conversion short section body 1. The straight groove 9 is opened on the inner wall of the first semicircular plate 3 or the second semicircular plate 6. The guide block 8 and the straight groove 9 are slidably connected in contact. When the guide block 8 and the straight groove 9 are in contact, the electromagnet 4 is located on the outer side of the adjacent movable plate 24.

[0049] When the first semicircular plate 3 contacts the conversion short section body 1, the guide block 8 and the straight groove 9 of the guide assembly contact each other. The guide block 8 and the straight groove 9 guide the first semicircular plate 3 or the second semicircular plate 6, realizing the movement guidance processing of the unlocking assembly, realizing the electromagnet 4 of the unlocking assembly to make vertical movement on the outside of the adjacent straight insertion plate 26, ensuring the driving stability of the unlocking assembly on the straight insertion plate 26.

[0050] In actual use: The electrically conductive drill rod 5 is connected to the conversion sub body 1 via the lower thread 17 and the middle thread 19. The top drive 7 is then connected to the conversion sub body 1 via the upper thread 22. The electrically conductive drill rod 5 is in contact with the electrical connector 18 of the movable conductive component. The signal from the electrically conductive drill rod 5 is transmitted to the slip ring 2 via the electrical connector 18 and the connecting wire 20, and then transmitted to the non-rotating ground acquisition system via the slip ring 2, thus achieving power and signal transmission. Simultaneously, the top drive 7 drives the conversion sub body 1 via the upper thread 22. The conversion sub body 1 drives the electrically conductive drill rod 5 to rotate via the lower thread 17 and the middle thread 19. The conversion sub body 1 ensures torque transmission. While ensuring power and signal transmission and torque transmission, the signal from the high-speed rotating electrically conductive drill rod 5 is transmitted to the non-rotating electrical connection part for ground system acquisition. When the top drive 7 is connected to the conversion sub body 1 via the upper thread 22, the top drive... Drive 7 pushes the triangular limit block 25 of the self-locking assembly into the T-shaped sleeve plate 14. Drive 7 and the upper thread 22 are connected. The restoring force of the spring 15 pushes the movable plate 24 upward. The movable plate 24 pushes the triangular limit block 25 into the upper limit slot 12. The triangular limit block 25 locks the drive 7, preventing it from opening counterclockwise. The upper thread 22 also prevents the drive 7 from rotating clockwise, thus preventing both forward and reverse rotation. When the straight insertion plate 26 moves into the upper limit straight groove 12, the bottom of the straight insertion plate 26 is at the middle of the lower limit straight groove 16. The straight insertion plate 26 and the lower limit straight groove 16 lock the electrically conductive drill rod 5, preventing the electrically conductive drill rod 5 from rotating in both directions. This enables the electrically conductive drill rod 5 and the top drive 7 to self-lock at the upper and lower ends of the conversion short section body 1, ensuring the stability of the connection between the electrically conductive drill rod 5 and the top drive 7 and the conversion short section body 1. Furthermore, both the electrically conductive drill rod 5 and the top drive 7 can rotate in both directions, which is beneficial for drilling.

[0051] When the electrically conductive drill rod 5 and the top drive 7 separate from the conversion short section body 1, the first semicircular plate 3 of the unlocking assembly is fitted onto the outside of the conversion short section body 1, and then the second semicircular plate 6 is rotated to make contact with the conversion short section body 1. When the first semicircular plate 3 contacts the conversion short section body 1, the guide block 8 and the straight groove 9 of the guide assembly contact each other. The guide block 8 and the straight groove 9 guide the first semicircular plate 3 or the second semicircular plate 6, realizing the movement guidance of the unlocking assembly. This allows the electromagnet 4 of the unlocking assembly to move vertically on the outside of the adjacent straight insertion plate 26, ensuring the driving stability of the unlocking assembly on the straight insertion plate 26. Then, the electromagnet 4 is energized to generate magnetism. Then, push the first semicircular plate 3 and the second semicircular plate 6 downward to move them. The first semicircular plate 3 and the second semicircular plate 6 drive the electromagnet 4, which generates magnetism, to move downward. The electromagnet 4 generates magnetism and drives the movable plate 24 to move downward. The movable plate 24 drives the triangular limit block 25 to separate from the upper limit straight groove 12, thereby unlocking the upper end of the self-locking component and facilitating the separation of the top drive 7 from the conversion short section body 1. After the top drive 7 separates from the conversion short section body 1, the spring 15 drives the movable plate 24 to move upward. The movable plate 24 drives the straight insertion plate 26 to separate from the lower limit straight groove 16, thereby separating the self-locking component from the electrically conductive drill rod 5 and facilitating the separation of the conversion short section body 1 and the electrically conductive drill rod 5.

[0052] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A self-locking electrically conductive top drive conversion structure, comprising a conversion sub body (1), an electrically conductive drill pipe (5), and a top drive (7), characterized in that: The conversion sub body (1) has a water inlet (23), which is connected to the electrically conductive drill rod (5) and the top drive (7) through the water inlet (23). The top of the conversion sub body (1) is connected to an upper thread (22), which is threaded to the top drive (7). The bottom outer wall of the conversion sub body (1) has a lower thread (17). A movable conductive component is provided above the lower thread (17) on the conversion sub body (1). The conversion short section body (1) has a central thread (19) above the movable conductive component. The conversion short section body (1) is threaded to the electrically conductive drill rod (5) through the lower thread (17) and the central thread (19). The movable conductive component is in contact with the conductive plug of the electrically conductive drill rod (5). The conversion short section body (1) is connected to a self-locking component. The self-locking component is connected to the electrically conductive drill rod (5) and the top drive (7). The conversion short section body (1) is also connected to an unlocking component. The movable conductive component includes an electric slip ring (2), an electric connector (18), a connecting wire (20), and a wire hole (21). The inner ring of the electric slip ring (2) is installed on the upper side wall of the conversion sub body (1). The electric connector (18) is installed on the lower outer wall of the conversion sub body (1). The conversion sub body (1) has a wire hole (21). A connecting wire (20) is installed in the wire hole (21). The bottom of the connecting wire (20) is connected to the top of the electric connector (18). The top of the connecting wire (20) is connected to the inner ring of the electric slip ring (2). The self-locking assembly includes an upper limit straight groove (12), a T-shaped groove (13), a T-shaped sleeve plate (14), a spring (15), a lower limit straight groove (16), a movable plate (24), a triangular limit block (25), a straight insert plate (26), and a straight slide groove (27). The top drive (7) has an upper limit straight groove (12) evenly spaced along the circumferential direction at its bottom. The conversion short section body (1) has a T-shaped groove (13) evenly spaced along the circumferential direction. A T-shaped sleeve plate (14) is installed in the T-shaped groove (13). A spring (15) is fixed at the bottom inside the T-shaped sleeve plate (14). The top of the spring (15) is fixed with a movable plate (24) that slides and fits against the inner wall of the T-shaped sleeve (14). The top of the movable plate (24) is fixed with a triangular limiting block (25) that is inserted into the upper limit straight groove (12). The bottom of the movable plate (24) is fixed with a straight insert plate (26). The bottom of the T-shaped sleeve (14) and the bottom of the T-shaped groove (13) are provided with a straight sliding groove (27) that slides and fits against the straight insert plate (26). The top of the electric conductive drill rod (5) is provided with a lower limit straight groove (16) at equal intervals along the circumferential direction, and the lower limit straight groove (16) and the straight insert plate (26) are inserted into each other. The unlocking assembly includes a first semicircular plate (3), an electromagnet (4), a second semicircular plate (6), a first connecting seat (10), and a second connecting seat (11). The first connecting seat (10) is fixed at one end of the first semicircular plate (3), and the second connecting seat (11) is fixed at one end of the second semicircular plate (6). The first connecting seat (10) is rotatably connected to the second connecting seat (11) through a riveting shaft. Electromagnets (4) are installed at equal intervals on the outer walls of the first semicircular plate (3) and the second semicircular plate (6), and the number of electromagnets (4) is the same as the number of movable plates (24).

2. The self-locking electrically conductive top drive conversion structure according to claim 1, characterized in that: The electrical connector (18) is located between the lower thread (17) and the middle thread (19), and the bottom of the electrical connector (18) is in contact with the conductive plug of the electrically conductive drill rod (5).

3. The self-locking electrically conductive top drive conversion structure according to claim 1, characterized in that: The inclined surface of the triangular limiting block (25) is set to open in the direction of the top drive (7).

4. The self-locking electrically conductive top drive conversion structure according to claim 3, characterized in that: The T-shaped groove (13) is offset from the wire hole (21).

5. The self-locking electrically conductive top drive conversion structure according to claim 4, characterized in that: When the spring (15) returns to its initial state, the triangular limiting block (25) is inserted into the upper limit straight groove (12), and at the same time, the bottom of the straight insertion plate (26) is at the middle of the lower limit straight groove (16).

6. The self-locking electrically conductive top drive conversion structure according to claim 1, characterized in that: The conversion section body (1) is also connected to a guide component for unlocking component guidance movement.

7. The self-locking electrically conductive top drive conversion structure according to claim 6, characterized in that: The guiding assembly includes a guide block (8) and a straight groove (9). The guide block (8) is installed on the outer wall of the conversion section body (1). The inner wall of the first semicircular plate (3) or the second semicircular plate (6) is provided with a straight groove (9). The guide block (8) and the straight groove (9) are in close contact. When the guide block (8) and the straight groove (9) are in close contact, the electromagnet (4) is located on the outer side of the adjacent movable plate (24).

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