Drill rod assembling and disassembling clamp

Abstract

The utility model relates to the technical field of clamps, one embodiment of the utility model provides a drill rod assembling and disassembling clamp which is used for being arranged on a derrick of a drilling machine, the derrick is provided with an operation hole used for allowing a drill rod to penetrate through, the drill rod assembling and disassembling clamp comprises a positioning seat, a rotating wheel and a clamping plate, and the positioning seat is used for being rotationally arranged on the derrick; the rotating wheels are used for being arranged on the positioning seat in a relative rotation mode, all the rotating wheels are arranged around the axis of the operation hole to form a clamping cavity for inserting a drill rod, and after rotating, the rotating wheels are used for driving the drill rod to rotate through friction force; the clamping plates are arranged on the positioning seat in a sliding mode, and all the clamping plates are used for clamping the drill rod after sliding into the clamping cavity, so that the positioning seat is used for driving the drill rod to rotate. Through cooperation of the rotating wheels and the clamping plates, connection between the two drill rods is firmer, and potential safety hazards can be reduced.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of clamping technology, and more specifically, to a drill pipe mounting and dismounting clamp. Background Technology

[0002] During drilling operations, drill pipes are required. Each time the drilling depth increases by the length of a drill pipe, a new drill pipe needs to be connected to the existing one. The drill pipes are connected by threads. Currently, this typically involves inserting the drill pipe into a clamping cavity formed by multiple rotating wheels. The rotating wheels then rotate, and the friction between the wheels and the drill pipe drives the drill pipe to rotate, thus connecting two drill pipes together. However, relying solely on rotating wheels is insufficient for disassembling drill pipes and poses safety hazards. Utility Model Content

[0003] To overcome the above-mentioned defects, the embodiments of this disclosure provide a drill pipe mounting and dismounting fixture, which solves the technical problem in the related art that relying solely on rotating wheels does not meet the requirements for disassembling drill pipes and poses safety hazards.

[0004] According to one aspect, at least one embodiment of this disclosure provides a drill pipe loading / unloading clamp for mounting on a drilling rig derrick, the derrick having an operating hole for passing a drill pipe through, the drill pipe loading / unloading clamp comprising:

[0005] A positioning seat is rotatably mounted on the derrick and located on the side of the operating hole for inserting the drill pipe, wherein the axis of rotation of the positioning seat coincides with the axis of the operating hole;

[0006] A rotating wheel is mounted on the positioning seat for relative rotation. The axis of the rotating wheel is the same as the axis of the operating hole. There are multiple rotating wheels, and all the rotating wheels are arranged around the axis of the operating hole to form a clamping cavity for inserting the drill rod. After the rotating wheel rotates, it drives the drill rod to rotate by friction.

[0007] A clamping plate is slidably disposed on the positioning seat and located between two adjacent rotating wheels. The sliding direction of the clamping plate is perpendicular to the axial direction of the rotating wheel. There are multiple clamping plates. After all the clamping plates slide into the clamping cavity, they are used to clamp the drill rod so that the positioning seat can drive the drill rod to rotate.

[0008] For example, in a drill pipe mounting and dismounting fixture provided in at least one embodiment of this disclosure, the surface of the rotating wheel has anti-slip protrusions, and there are multiple anti-slip protrusions, with all the anti-slip protrusions on the same rotating wheel arranged at intervals along the axial direction of the rotating wheel.

[0009] For example, in a drill pipe mounting and dismounting fixture provided in at least one embodiment of this disclosure, the clamping plate has anti-slip ridges on the side facing the drill pipe, and there are multiple anti-slip ridges, with all the anti-slip ridges on the same clamping plate arranged at intervals along the length direction of the drill pipe.

[0010] For example, in at least one embodiment of the drill pipe assembly / disassembly fixture provided in this disclosure, the positioning seat has an arc-shaped side surface, and the arc-shaped side surface is coaxially disposed with the positioning seat. The drill pipe assembly / disassembly fixture also includes...

[0011] An arc-shaped rack, wherein the arc-shaped rack is disposed on the arc-shaped side surface;

[0012] The toothed plate is slidably mounted on the derrick, and the sliding direction is perpendicular to the axis of the rotating wheel. The toothed plate is located outside the arc-shaped rack and meshes with the arc-shaped rack. After the toothed plate slides, it drives the arc-shaped rack and the positioning seat to rotate.

[0013] For example, in a drill pipe assembly / disassembly fixture provided in at least one embodiment of this disclosure, the drill pipe assembly / disassembly fixture further includes a sliding drive mechanism. One end of the sliding drive mechanism is used to connect with the derrick, and the other end of the sliding drive mechanism is connected with the toothed plate. After the sliding drive mechanism extends or retracts, it is used to drive the toothed plate to slide.

[0014] For example, in a drill pipe mounting and dismounting fixture provided in at least one embodiment of this disclosure, the shape of the clamping plate facing the drill pipe side matches the shape of the drill pipe.

[0015] For example, in a drill pipe assembly / disassembly fixture provided in at least one embodiment of this disclosure, the drill pipe assembly / disassembly fixture further includes a positioning cover, the positioning cover is disposed on the positioning seat and located around the rotating wheel, the rotating wheel is rotatably connected to the positioning cover, and the clamping plate is located between two adjacent positioning covers, or the clamping plate is located inside the positioning cover.

[0016] For example, in at least one embodiment of the present disclosure, a drill pipe assembly / disassembly fixture further includes a rotary drive mechanism. The rotary drive mechanism is disposed on the positioning seat and is connected to the rotating wheel for driving the rotating wheel to rotate.

[0017] For example, in a drill pipe mounting and dismounting fixture provided in at least one embodiment of this disclosure, the number of the rotary drive mechanism and the number of the rotating wheels are equal and they are connected in a one-to-one correspondence.

[0018] For example, in a drill pipe mounting and dismounting fixture provided in at least one embodiment of this disclosure, the drill pipe mounting and dismounting fixture further includes a telescopic mechanism. The telescopic mechanism extends in a direction perpendicular to the axial direction of the rotating wheel. The fixed end of the telescopic mechanism is connected to the positioning seat. The extended end of the telescopic mechanism is located between two adjacent rotating wheels and is connected to the clamping plate. After the telescopic mechanism extends, it is used to slide the clamping plate into the clamping cavity.

[0019] The beneficial effects of the embodiments disclosed herein are as follows: When the drilling rig is in use, the derrick is in an upright state, the operating hole is located at the lower end of the derrick, and the axes of the rotating wheel and the operating hole are both set in the vertical direction. The positioning seat can rotate around the axis of the operating hole, and the rotating wheel and the clamping plate rotate synchronously with the positioning seat. A larger clamping force is required in the later stages of connecting the two drill rods and in the initial stages of disassembly. After the lower end of the new drill rod passes sequentially through the clamping cavity formed by all the rotating wheels and the operating hole on the derrick, the new drill rod is aligned with the drill rod in the well. Then, the rotating wheel begins to rotate. Since the drill rod is inserted into the clamping cavity formed by multiple rotating wheels, friction is generated between the rotating wheel and the drill rod surface when the rotating wheel rotates. Using this friction, the rotating wheel can drive the drill rod to rotate, thereby achieving the threaded connection between the new drill rod and the existing drill rod in the well, completing the first rotation of the drill rod. Then, move the clamping plate toward the drill pipe, clamp it in the clamping cavity, and then rotate the positioning seat. The positioning seat drives the clamping plate to rotate, and the clamping plate drives the new drill pipe to rotate a second time, completing the threaded connection between the new drill pipe and the existing drill pipe in the well. Then, the clamping plate moves in the opposite direction to return to the initial position, and the positioning seat rotates in the opposite direction to return to the initial position.

[0020] When disassembling drill pipes, first clamp the drill pipes with a clamping plate, then rotate the drill pipes in the opposite direction. The large clamping force of the clamping plate on the drill pipes can quickly overcome the large locking force between the two drill pipes. Then separate the clamping plate from the drill pipes, and use the rotating wheel to drive the drill pipes to rotate in the opposite direction to achieve separation between the two drill pipes.

[0021] The clamping force applied to the drill pipes by the clamping plates makes the connection between the two drill pipes more secure, reducing safety hazards and making disassembly faster. Furthermore, the positioning seat only needs to rotate a small angle to achieve a reliable connection between the two drill pipes, reducing the rotation range of the positioning seat. Attached Figure Description

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

[0023] Figure 1 This is a schematic diagram of the structure of one embodiment of the present disclosure in a specific use, showing one direction.

[0024] Figure 2 This is a schematic diagram of the structure of one embodiment of the present disclosure in another direction during specific use;

[0025] Figure 3 This is a cross-sectional view of one embodiment of the present disclosure;

[0026] Figure 4 This is a schematic diagram of the structure of one embodiment of the present disclosure in one direction;

[0027] Figure 5 This is a schematic diagram of the structure of one embodiment of the present disclosure in another direction;

[0028] Figure 6 for Figure 4 Enlarged view of A in the middle;

[0029] Figure 7 This is a front view of one embodiment of the present disclosure.

[0030] In the diagram: 1. Positioning seat, 2. Rotating wheel, 3. Clamping plate, 4. Clamping cavity, 5. Anti-slip convex ring, 6. Anti-slip convex strip, 7. Arc-shaped side, 8. Arc-shaped rack, 9. Tooth plate, 10. Sliding drive mechanism, 11. Positioning cover, 12. Rotary drive mechanism, 13. Telescopic mechanism, 14. Derrick, 15. Operating hole, 16. Drill pipe. Detailed Implementation

[0031] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0032] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0033] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0034] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0036] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] like Figures 1-5The diagram illustrates a drill pipe loading and unloading clamp according to an embodiment of this disclosure. The clamp is mounted on a drilling rig derrick 14, which has an operating hole 15 for a drill pipe 16 to pass through. The clamp includes a positioning seat 1, a rotating wheel 2, and a clamping plate 3. The positioning seat 1 is rotatably mounted on the derrick 14 and located on the side of the operating hole 15 for inserting the drill pipe 16. The axis of rotation of the positioning seat 1 coincides with the axis of the operating hole 15. The rotating wheel 2 is rotatably mounted on the positioning seat 1, and its axial direction coincides with the axis of the operating hole 15. The holes 15 are axially aligned, and there are multiple rotating wheels 2. All the rotating wheels 2 are arranged around the axis of the operating hole 15 to form a clamping cavity 4 for inserting the drill rod 16. After the rotating wheels 2 rotate, they are used to drive the drill rod 16 to rotate by friction. The clamping plate 3 is slidably set on the positioning seat 1 and is located between two adjacent rotating wheels 2. The sliding direction of the clamping plate 3 is perpendicular to the axis of the rotating wheel 2. There are multiple clamping plates 3. After all the clamping plates 3 slide into the clamping cavity 4, they are used to clamp the drill rod 16 so that the positioning seat 1 drives the drill rod 16 to rotate.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown in this disclosure, when the drilling rig is in use, the derrick 14 is in an upright position, the operating hole 15 is located at the lower end of the derrick 14, and the axes of the rotating wheel 2 and the operating hole 15 are both arranged in the vertical direction. The positioning seat 1 can rotate around the axis of the operating hole 15, and the rotating wheel 2 and the clamping plate 3 rotate synchronously with the positioning seat 1.

[0039] In the later stages of connecting the two drill pipes 16 and the initial stages of disassembly, a large clamping force is required. After the lower end of the new drill pipe 16 is passed through the clamping cavity 4 formed by all the rotating wheels 2 and the operating hole 15 on the derrick 14 in sequence, the new drill pipe 16 is aligned with the drill pipe in the well. Then, the rotating wheels 2 are started to rotate. Since the drill pipe 16 is inserted into the clamping cavity 4 formed by multiple rotating wheels 2, friction is generated between the rotating wheels 2 and the surface of the drill pipe 16 when the rotating wheels 2 rotate. Using this friction, the rotating wheels 2 can drive the drill pipe 16 to rotate, thereby realizing the threaded connection between the new drill pipe 16 and the existing drill pipe in the well, completing the first rotation of the drill pipe 16. Then, the clamping plate 3 is moved toward the drill pipe 16, enters the clamping cavity 4, and clamps the drill pipe 16. Then, the positioning seat 1 is rotated, and the positioning seat 1 drives the clamping plate 3 to rotate. The clamping plate 3 drives the new drill pipe 16 to rotate a second time, completing the threaded connection between the new drill pipe 16 and the existing drill pipe in the well. Then, clamp 3 moves in the opposite direction to return to its initial position, and positioning seat 1 rotates in the opposite direction to return to its initial position.

[0040] When disassembling drill rod 16, first clamp drill rod 16 with clamping plate 3, drive drill rod 16 to rotate in the opposite direction. The large clamping force of clamping plate 3 on drill rod 16 can quickly overcome the large locking force between the two drill rods 16. Then separate clamping plate 3 from drill rod 16, and then drive drill rod 16 to rotate in the opposite direction with rotating wheel 2 to achieve separation between the two drill rods 16.

[0041] The clamping force of the clamping plate 3 on the drill rod 16 makes the connection between the two drill rods 16 more secure, reducing safety hazards and making the disassembly process faster. Moreover, the positioning seat 1 only needs to rotate a small angle to achieve a reliable connection between the two drill rods 16, which can reduce the rotation range of the positioning seat 1.

[0042] In some examples, the surface of the rotating wheel 2 has anti-slip protrusions 5, and there are multiple anti-slip protrusions 5, with all anti-slip protrusions 5 on the same rotating wheel 2 arranged at intervals along the axial direction of the rotating wheel 2.

[0043] like Figure 6 As shown, the anti-slip convex ring 5 can increase the contact area and friction coefficient between the rotating wheel 2 and the drill rod 16. When the rotating wheel 2 rotates, it can more effectively drive the drill rod 16 to rotate synchronously, preventing the drill rod 16 from slipping due to insufficient friction. It can ensure that the drill rod 16 can rotate stably with the rotating wheel 2 when connecting or disassembling the drill rod 16, reducing the interruption of operation caused by slippage, speeding up the installation and disassembly of the drill rod 16, and improving the efficiency of drilling operations.

[0044] In some examples, the clamping plate 3 has anti-slip ridges 6 on the side facing the drill rod 16. There are multiple anti-slip ridges 6, and all the anti-slip ridges 6 on the same clamping plate 3 are spaced apart along the length of the drill rod 16.

[0045] For example, such as Figure 6 As shown, during use, the derrick 14 is erected, the axis of the rotating wheel 2 is set in the vertical direction, and all the anti-slip ridges 6 on the side of the clamping plate 3 are distributed at intervals in the vertical direction. When the clamping plate 3 clamps the drill rod 16 and drives the drill rod 16 to rotate, the anti-slip ridges 6 can increase the friction between the clamping plate 3 and the drill rod 16, making the clamping effect of the clamping plate 3 on the drill rod 16 more continuous and stable.

[0046] In some examples, the positioning seat 1 has an arc-shaped side 7, which is coaxially arranged with the positioning seat 1. A drill pipe mounting and dismounting fixture also includes an arc-shaped rack 8 and a toothed plate 9. The arc-shaped rack 8 is arranged on the arc-shaped side 7. The toothed plate 9 is slidably arranged on the derrick 14, and the sliding direction is perpendicular to the axis of the rotating wheel 2. The toothed plate 9 is located outside the arc-shaped rack 8 and meshes with the arc-shaped rack 8. After the toothed plate 9 slides, it is used to drive the arc-shaped rack 8 and the positioning seat 1 to rotate.

[0047] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 3 As shown, the positioning seat 1 has two arc-shaped sides 7 on the left and right. Each arc-shaped side 7 is equipped with an arc-shaped rack 8. The length direction of the rack 9 is set along the front-back direction and meshes with the arc-shaped rack 8. When the rack 9 slides along the front-back direction on the derrick 14, it will drive the arc-shaped rack 8 to rotate. The arc-shaped rack 8 drives the positioning seat 1 to rotate, which can accurately control the rotation angle of the positioning seat 1, thereby accurately controlling the rotation angle of the drill pipe 16.

[0048] In some examples, a drill pipe loading and unloading clamp also includes a sliding drive mechanism 10, one end of which is connected to the derrick 14 and the other end of which is connected to the toothed plate 9. After the sliding drive mechanism 10 extends or retracts, it is used to drive the toothed plate 9 to slide.

[0049] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the sliding drive mechanism 10 uses its telescopic function to push the toothed plate 9 to slide back and forth along the derrick 14. The operator only needs to control the start, stop and telescopic degree of the sliding drive mechanism 10, without having to manually push the toothed plate 9. This can greatly improve the convenience and automation of operation, reduce the labor intensity of the operator, and improve the safety of drilling operations.

[0050] In some examples, the shape of the clamp 3 facing the drill pipe 16 matches the shape of the drill pipe 16.

[0051] For example, such as Figure 3 and Figure 6 As shown, the side of the clamping plate 3 facing the drill rod 16 is designed according to the outer contour of the drill rod 16, such as round, hexagonal, etc. (depending on the cross-section of the drill rod). When clamping, it can increase the contact area between the clamping plate 3 and the drill rod 16, improve the clamping effect of the clamping plate 3 on the drill rod 16, and at the same time, it can evenly distribute the clamping force, avoid excessive local pressure and damage to the drill rod 16, and reduce the risk of deformation of the drill rod 16 due to uneven force.

[0052] In some examples, a drill pipe mounting and dismounting fixture also includes a positioning cover 11, which is disposed on the positioning seat 1 and located around the rotating wheel 2. The rotating wheel 2 is rotatably connected to the positioning cover 11, and the clamping plate 3 is located between two adjacent positioning covers 11, or the clamping plate 3 is located inside the positioning cover 11.

[0053] For example, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the rotating wheels 2 and the positioning covers 11 can be connected one-to-one, or multiple rotating wheels 2 can be installed on the same positioning cover 11, as long as the drill rod 16 can be inserted into the clamping cavity 4 formed by all the rotating wheels 2. When the rotating wheels 2 and the positioning covers 11 are connected one-to-one, the clamping plate 3 is located between two adjacent positioning covers 11. When multiple rotating wheels 2 are installed on the same positioning cover 11, the clamping plate 3 is located inside the positioning cover 11. The number of rotating wheels 2 in this disclosure is preferably four, and the number of positioning covers 11 is preferably two. Taking the two positioning covers 11 symmetrically arranged on the left and right sides of the operating hole 15 as an example, the two front and rear rotating wheels 2 on the left share one positioning cover 11, and the two front and rear rotating wheels 2 on the right share one positioning cover 11. The right side of the left positioning cover 11 is open, and the left side of the right positioning cover 11 is open. The positioning covers 11 provide support and positioning for the rotating wheels 2 and ensure that the four rotating wheels 2 can contact the drill rod 16. Installing one positioning cover 11 can realize the connection between two rotating wheels 2 and the derrick 14, which is simpler and more convenient.

[0054] In some examples, a drill pipe loading and unloading fixture also includes a rotary drive mechanism 12, which is mounted on the positioning seat 1 and is connected to the rotating wheel 2 for driving the rotating wheel 2 to rotate.

[0055] Compared with manual rotation of the drill rod by the operator, the present disclosure uses the rotary drive mechanism 12 to drive the rotating wheel 2 to rotate, which can complete the connection and disassembly of the drill rod 16 more quickly, saving more time and effort, greatly reducing the labor intensity of the operator, shortening the operation time, and improving the drilling efficiency.

[0056] In some examples, the number of rotary drive mechanisms 12 and rotating wheels 2 are equal and they are connected in a one-to-one correspondence.

[0057] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, each rotating wheel 2 is powered by a dedicated rotary drive mechanism 12. The one-to-one connection ensures precise and independent power transmission. When the rotary drive mechanism 12 is activated, the power is directly transmitted to the corresponding rotating wheel 2, resulting in low power loss. This makes the rotation of the rotating wheel 2 more stable, precise, and controllable. Each rotating wheel 2 can operate at the required speed and torque, providing a uniform and stable driving force to the drill pipe 16.

[0058] In some examples, a drill pipe mounting and dismounting clamp also includes a telescopic mechanism 13, the telescopic direction of which is perpendicular to the axis of the rotating wheel 2. The fixed end of the telescopic mechanism 13 is connected to the positioning seat 1, and the extended end of the telescopic mechanism 13 is located between two adjacent rotating wheels 2 and connected to the clamping plate 3. After the telescopic mechanism 13 extends, it is used to slide the clamping plate 3 into the clamping cavity.

[0059] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, when installing the drill pipe 16, the derrick 14 is in an upright state, the telescopic mechanism 13 is in a horizontal state on the positioning seat 1 and is located between two adjacent rotating wheels 2. The telescopic mechanism 13 drives the clamping plate 3 to move horizontally, so that the clamping plate 3 contacts or separates from the drill pipe 16. The mechanized operation is more time-saving and labor-saving.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A drill pipe mounting and dismounting clamp for mounting on a drilling rig derrick (14), the derrick (14) having an operating hole (15) for passing a drill pipe (16), characterized in that, The drill pipe mounting and dismounting fixture includes: Positioning seat (1), the positioning seat (1) is rotatably mounted on the derrick (14) and located on the side of the operating hole (15) for inserting the drill rod (16), the axis of rotation of the positioning seat (1) coincides with the axis of the operating hole (15); Rotating wheel (2), the rotating wheel (2) is used to rotate relative to the positioning seat (1), the axial direction of the rotating wheel (2) is the same as the axial direction of the operating hole (15), there are multiple rotating wheels (2), all the rotating wheels (2) are arranged around the axis of the operating hole (15) to form a clamping cavity (4) for inserting the drill rod (16), after the rotating wheel (2) rotates, it is used to drive the drill rod (16) to rotate by friction; The clamping plate (3) is slidably disposed on the positioning seat (1) and located between two adjacent rotating wheels (2). The sliding direction of the clamping plate (3) is perpendicular to the axis of the rotating wheel (2). There are multiple clamping plates (3). After all the clamping plates (3) slide into the clamping cavity (4), they are used to clamp the drill rod (16) so that the positioning seat (1) drives the drill rod (16) to rotate.

2. The drill pipe assembly / disassembly clamp according to claim 1, characterized in that, The surface of the rotating wheel (2) has anti-slip protrusions (5), and there are multiple anti-slip protrusions (5). All the anti-slip protrusions (5) on the same rotating wheel (2) are arranged at intervals along the axial direction of the rotating wheel (2).

3. The drill pipe assembly / disassembly clamp according to claim 1, characterized in that, The clamping plate (3) has anti-slip ridges (6) on its side facing the drill rod (16). There are multiple anti-slip ridges (6), and all the anti-slip ridges (6) on the same clamping plate (3) are arranged at intervals along the length direction of the drill rod (16).

4. A drill pipe mounting and dismounting clamp according to claim 1, characterized in that, The positioning seat (1) has an arc-shaped side surface (7), which is coaxially arranged with the positioning seat (1). The drill pipe mounting and dismounting fixture also includes... Arc-shaped rack (8), the arc-shaped rack (8) is disposed on the arc-shaped side surface (7); The toothed plate (9) is used to slide on the derrick (14) and the sliding direction is perpendicular to the axis of the rotating wheel (2). The toothed plate (9) is located outside the arc-shaped rack (8) and meshes with the arc-shaped rack (8). After the toothed plate (9) slides, it is used to drive the arc-shaped rack (8) and the positioning seat (1) to rotate.

5. A drill pipe mounting and dismounting clamp according to claim 4, characterized in that, The drill pipe mounting and dismounting fixture also includes a sliding drive mechanism (10). One end of the sliding drive mechanism (10) is used to connect with the derrick (14), and the other end of the sliding drive mechanism (10) is connected with the toothed plate (9). After the sliding drive mechanism (10) extends and retracts, it is used to drive the toothed plate (9) to slide.

6. A drill pipe mounting and dismounting clamp according to claim 1, characterized in that: The shape of the clamp (3) facing the drill rod (16) matches the shape of the drill rod (16).

7. A drill pipe mounting and dismounting clamp according to claim 1, characterized in that, The drill pipe mounting and dismounting fixture also includes a positioning cover (11), which is disposed on the positioning seat (1) and located around the rotating wheel (2). The rotating wheel (2) is rotatably connected to the positioning cover (11). The clamping plate (3) is located between two adjacent positioning covers (11), or the clamping plate (3) is located inside the positioning cover (11).

8. A drill pipe mounting and dismounting clamp according to claim 1, characterized in that, The drill pipe mounting and dismounting fixture also includes a rotary drive mechanism (12), which is mounted on the positioning seat (1) and is connected to the rotating wheel (2) for driving the rotating wheel (2) to rotate.

9. A drill pipe assembly / disassembly clamp according to claim 8, characterized in that, The number of the rotary drive mechanism (12) and the number of the rotating wheels (2) are equal, and they are connected in a one-to-one correspondence.

10. A drill pipe assembly / disassembly clamp according to claim 1, characterized in that, The drill pipe mounting and dismounting clamp also includes a telescopic mechanism (13). The telescopic direction of the telescopic mechanism (13) is perpendicular to the axis of the rotating wheel (2). The fixed end of the telescopic mechanism (13) is connected to the positioning seat (1). The extended end of the telescopic mechanism (13) is located between two adjacent rotating wheels (2) and is connected to the clamping plate (3). After the telescopic mechanism (13) is extended, it is used to make the clamping plate (3) slide into the clamping cavity.

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