Impact torque type drill rod dismounting tool and dismounting method

Abstract

The invention discloses an impact torque type drill rod dismounting tool and a dismounting method. The impact torque type drill rod dismounting tool at least comprises a first lantern ring and a second lantern ring which are coaxially and oppositely arranged. The first lantern ring is provided with a first mounting cavity penetrating in the axial direction, and at least one first protruding part extending towards the second lantern ring along the axis of the first mounting cavity is arranged at the end, close to the second lantern ring, of the first lantern ring. The second lantern ring is provided with a second mounting cavity coaxially penetrating through the first mounting cavity and a second convex part which is arranged close to one end of the first lantern ring and matched with the first convex part; the second protruding parts and the first protruding parts are arranged in a staggered mode in the axis direction of the second installation cavity, the first sleeve ring rotates relative to the second sleeve ring in the axis direction, the first protruding parts are driven to impact the second protruding parts, and therefore impact torque is transmitted to the second sleeve ring. The device has the advantages that the device can be reliably connected with the output end of the drilling machine, the static torque of the drilling machine is converted into impact torque, a drill rod with the thread torque exceeding the maximum output torque of the drilling machine can be detached, the structure is simple, and the detaching efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering machinery for drilling construction, and particularly relates to an impact torque type drill pipe disassembly tooling and a disassembly method. Background Art

[0002] In the application scenarios of drilling rigs such as tunnel excavation and underground mining, deep hole drilling is an essential key link before excavation. By analyzing the strata through deep hole drilling, important basis can be provided for subsequent operations. The depth of such drill holes often reaches dozens of meters or even one or two hundred meters, and a large number of drill pipes need to be connected in sequence through threads and inserted into the drill holes.

[0003] During the process of advancing the drilling operation, the connection threads of the drill pipes will become tighter and tighter due to continuous stress. When the thread torque exceeds the maximum output torque of the drilling rig, if only relying on the static torque output of the drilling rig, it is very difficult to disassemble the drill pipe threads. For drilling rigs with relatively small torque, this problem greatly reduces the work efficiency and may even cause the operation to stagnate seriously.

[0004] Currently, in the actual operation of disassembling drill pipes in deep hole drilling, the difficulty in disassembling threads is quite common. Once such problems occur, manual intervention is usually required, such as knocking and vibrating for disassembly. This not only consumes a lot of time and energy, but also is extremely easy to damage the drill pipes during the operation. The damage of the drill pipes will not only affect the normal operation of the equipment, but also have an adverse impact on the entire construction progress.

[0005] The deep hole drill pipe disassembly tooling disclosed in Chinese Patent CN214055129U mainly includes an upper pressing cover, a lower pressing cover and a rotating handle. During the specific disassembly operation, the upper pressing cover is placed on the upper side of the outer circle of the drill pipe, the lower pressing cover is arranged on the lower side of the outer circle of the drill pipe, the upper pressing cover and the lower pressing cover are locked and fixed through several fasteners, and the rotating handle is fixed on the upper side of the upper pressing cover. This design simplifies the disassembly operation to a certain extent, and attempts to disassemble the drill pipe by applying a certain external force through the rotating handle. However, when facing large thread torques, its limitations become prominent. Since it mainly relies on the external force applied by the rotating handle, when the thread torque is too large, the force that the rotating handle can provide is limited and it is difficult to overcome the huge torque, thus unable to achieve efficient disassembly of the drill pipe.

[0006] The drill pipe disassembly tooling disclosed in Chinese Patent CN213953540U is composed of a first clamping plate, a second clamping plate and a control mechanism. The first clamping plate and the second clamping plate are provided with a square clamping structure adapted to the drill pipe and the stabilizer bar, and the drill pipe or the stabilizer bar can be clamped through the square clamping structure. The control mechanism is connected to the first clamping plate and the second clamping plate, and its function is to control the relative angular change of the two around the drill pipe when the first clamping plate clamps the drill pipe or the stabilizer bar and the second clamping plate clamps the stabilizer bar or the drill pipe. Through the cooperation of the square clamping structure and the control mechanism, this tooling realizes the disassembly operation of the drill pipe to a certain extent. However, when encountering the situation of large thread torque, this tooling also has deficiencies. The square clamping structure may slip when bearing large torque, resulting in the inability to stably clamp the drill pipe, and the control mechanism has limited adjustment ability when dealing with large torque, making it difficult to accurately control the relative angular change of the clamping plate, thereby affecting the disassembly efficiency of the drill pipe. Although the existing drill pipe disassembly tooling can effectively reduce the manual operation intensity to a certain extent, there are still obvious deficiencies in dealing with large thread torque and realizing the efficient disassembly of the drill pipe. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide an impact torque type drill pipe disassembly tooling that can be reliably connected to the output end of the drill rig, convert the static torque of the drill rig into impact torque, can disassemble the drill pipe with a thread torque exceeding the maximum output torque of the drill rig, and has a simple structure and high disassembly efficiency.

[0008] To solve the above technical problem, the technical solution provided by the present invention is an impact torque type drill pipe disassembly tooling, which at least includes a first collar and a second collar arranged coaxially and oppositely;

[0009] The first collar is provided with an axially penetrating first installation cavity, and at least one first protrusion extending along the axis of the first installation cavity towards the second collar is arranged at one end close to the second collar;

[0010] The second collar is provided with a second installation cavity coaxially penetrating with the first installation cavity, and a second protrusion matching the first protrusion is arranged at one end close to the first collar;

[0011] The second protrusion and the first protrusion are arranged in a staggered manner around the axis direction of the second installation cavity, and the first collar rotates relative to the second collar around the axis direction, driving the first protrusion to impact the second protrusion, thereby transmitting impact torque to the second collar.

[0012] In a preferred embodiment, an impact surface is arranged on the side where the first protrusion impacts the second protrusion, a bearing surface adapted to the impact surface is arranged on the second protrusion, and the first protrusion impacts the bearing surface through the impact surface, thereby impacting the second protrusion.

[0013] A preferred embodiment is that the normal direction of the impact surface and the bearing surface is perpendicular to the rotation radius of the first collar.

[0014] A preferred embodiment is that the first convex parts are uniformly arranged radially around the axis direction of the first installation cavity;

[0015] The second convex parts are uniformly arranged radially around the axis direction of the second installation cavity;

[0016] The second convex parts and the first convex parts are arranged alternately one by one around the axis direction of the second installation cavity.

[0017] A preferred embodiment is that at least one positioning part for circumferential positioning is arranged on the inner wall of the first installation cavity and / or the second installation cavity.

[0018] A preferred embodiment is that the first collar and the second collar have the same structure.

[0019] The present invention also provides a disassembly method for using the impact torque type drill pipe disassembly tooling as described in any one of the above, which at least includes the following steps:

[0020] Step S1, install the first collar on the output end of the drill rig, and install the second collar on the drill pipe to be disassembled;

[0021] Step S2, clamp and fix the adjacent drill pipe connected to the drill pipe to be disassembled;

[0022] Step S3, start the drill rig so that the rotation direction of the output end of the drill rig is the same as the loosening direction of the drill pipe to be disassembled;

[0023] Step S4, the output end of the drill rig drives the first collar to rotate relative to the second collar, and the first convex part impacts the second convex part to convert the static torque of the drill rig into impact torque;

[0024] Step S5, under the action of the impact torque, the second collar drives the drill pipe to be disassembled to rotate relative to the adjacent drill pipe, so that the connection between the drill pipe to be disassembled and the adjacent drill pipe becomes loose.

[0025] A preferred embodiment is that step S1 specifically includes the following steps:

[0026] Step S101, insert the end of the drill rig connecting sleeve into the first installation cavity of the first collar, and the first collar is fixedly installed on the output end of the drill rig through the first installation cavity, and the first convex part of the first collar faces the direction of the drill pipe to be disassembled;

[0027] Step S102: Insert the free end of the drill pipe to be disassembled into the second installation cavity of the second collar. The second collar is fixedly installed on the free end of the drill pipe to be disassembled through the second installation cavity, and the second convex part of the second collar is oriented towards the first convex part.

[0028] Step S103: Arrange the first convex part and the second convex part in a staggered manner around the axis of the second installation cavity.

[0029] A preferred embodiment further includes the following steps:

[0030] Step S7: If, after Steps S3, S4, and S5, the connection between the drill pipe to be disassembled and the adjacent drill pipe is not loosened, then correspondingly increase the phase difference between the first convex part and the second convex part that is correspondingly impacted, and repeat Steps S3, S4, and S5.

[0031] Compared with the prior art, the impact torque type drill pipe disassembly tooling and disassembly method disclosed by the present invention have the following beneficial effects:

[0032] (1) The impact torque type drill pipe disassembly tooling disclosed by the present invention includes at least a first collar and a second collar that are oppositely arranged coaxially, ensuring the stability of torque transmission. During the drill pipe disassembly process, the coaxial opposite arrangement enables the first collar and the second collar to maintain a high degree of concentricity when rotating. This ensures that the impact torque can be stably transmitted along the axis direction, avoiding additional vibration and torque loss caused by eccentricity, thereby improving the efficiency of torque transmission, enabling the tooling to more effectively apply energy to the drill pipe threads, and helping to overcome large thread torques. The first collar is provided with an axially penetrating first installation cavity, which provides space for the connection between the first collar and the output end of the drilling rig or the output end of the power head, and the first installation cavity is adapted to the output end of the drilling rig or the output end of the power head to form a reliable connection, enabling the first collar to be accurately installed on the output end of the drilling rig or the output end of the power head.

[0033] One end of the first collar close to the second collar is provided with a first convex part extending from the axis of the first installation cavity towards the second collar. It extends along the axis direction and can accurately impact the second convex part on the second collar when the first collar rotates relative to the second collar. With such a structural design, the transmission of the impact force is more direct and efficient, enabling the energy generated by the rotational motion to be concentratedly converted into impact torque, effectively enhancing the disassembly ability of the drill pipe threads.

[0034] The second set of rings is provided with a second installation cavity that penetrates coaxially with the first installation cavity, ensuring the symmetry and stability of the entire tooling structure. With such a coaxial structure, the first set of rings and the second set of rings can maintain a smooth motion trajectory during relative rotation, reducing the additional stress and vibration caused by structural asymmetry, and improving the working precision and reliability of the tooling. One end of the second set of rings close to the first set of rings is provided with a second convex portion that matches the first convex portion. The first convex portion can accurately impact the second convex portion. This matching design ensures the effective transmission of the impact force and avoids energy loss or impact failure caused by structural mismatch.

[0035] The second convex portion and the first convex portion are arranged in a staggered manner around the axis direction of the second installation cavity. The first set of rings rotates relative to the second set of rings around the axis direction, driving the first convex portion to impact the second convex portion, thereby transmitting impact torque to the second set of rings. When facing the task of removing a drill pipe with a large thread torque, the staggered first convex portion and second convex portion can generate sufficient impact torque to break through the torque limit and ensure that the drill pipe can be successfully removed, effectively solving the problem of inability to remove a large thread torque.

[0036] (2) For an impact torque type drill pipe disassembly tooling disclosed by the present invention, an impact surface is provided on the side where the first convex portion and the second convex portion impact. The second convex portion is provided with a bearing surface adapted to the impact surface. The first convex portion impacts the bearing surface through the impact surface, thereby impacting the second convex portion. The design of the impact surface and the bearing surface being adapted to each other, on the one hand, enables the first convex portion to transmit energy more concentratedly and effectively when impacting the second convex portion. The adapted surface shape can ensure that the impact force acts along a predetermined direction and manner, reducing the dispersion and loss of energy, thereby improving the generation efficiency of the impact torque. On the other hand, the use of the impact surface and the bearing surface design can increase the contact area and stability between the first convex portion and the second convex portion. During frequent impacts, the adapted surfaces can better disperse the impact force, avoid local stress concentration, thereby reducing the wear and damage of the convex portions, and improving the service life and reliability of the tooling.

[0037] The normal directions of the impact surface and the bearing surface are perpendicular to the rotation radius of the first set of rings. With such a structural design, the tangential force generated by the rotation of the first set of rings can be most effectively converted into an impact force and directly transmitted to the second set of rings along the normal direction. This perpendicular relationship ensures that the force transmission path is the shortest and most direct, reducing the loss and deflection of the force during transmission, thereby improving the transmission efficiency of the impact torque and enhancing the ability of the tooling to disassemble the drill pipe thread.

[0038] (3) An impact torque type drill pipe disassembly tooling disclosed by the present invention. The first convex parts are evenly arranged radially around the axis of the first installation cavity, and the second convex parts are evenly arranged radially around the axis of the second installation cavity. The second convex parts and the first convex parts are arranged alternately one by one around the axis of the second installation cavity. With such a structural design, on the one hand, when the first collar rotates relative to the second collar, each convex part can participate in the impact synchronously and evenly. This uniform distribution method avoids the impact torque concentrating on a certain point or a certain area, but evenly transmits the torque to the drill pipe thread, thereby improving the overall disassembly efficiency and avoiding the thread damage caused by the unilateral impact on the drill pipe thread. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic diagram of the overall installation structure of an embodiment of an impact torque type drill pipe disassembly tooling of the present invention;

[0040] Figure 2 is another perspective schematic diagram of the overall installation structure of an embodiment of an impact torque type drill pipe disassembly tooling of the present invention;

[0041] Figure 3 is Figure 2 a schematic diagram of the cross-sectional structure in the A-A direction of

[0042] Figure 4 is Figure 2 a schematic diagram of the cross-sectional structure in the B-B direction of

[0043] Figure 5 is a schematic diagram of the installation structure of the first collar and the second collar of an embodiment of an impact torque type drill pipe disassembly tooling of the present invention;

[0044] Figure 6 is another perspective structural schematic diagram of the installation structure of the first collar and the second collar of an embodiment of an impact torque type drill pipe disassembly tooling of the present invention;

[0045] Figure 7 is Figure 6 a schematic diagram of the structure in the C direction of

[0046] Description of the reference numerals:

[0047] 1 - First collar; 11 - First installation cavity; 111 - Positioning part; 12 - First convex part; 121 - Impact surface; 13 - First half collar; 131 - First installation part; 132 - Positioning groove; 14 - Second half collar; 141 - Second installation part;

[0048] 2 - Second collar; 21 - Second installation cavity; 22 - Second convex part; 221 - Bearing surface;

[0049] 3 - Drill rig connection sleeve;

[0050] 4 - Drill pipe to be disassembled

[0051] 5 - Adjacent drill pipes Detailed implementation manners

[0052] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the accompanying drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific implementation manners and are not intended to limit this application. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0055] In addition, in the present invention, descriptions such as "first", "second", etc. are only for descriptive purposes and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0056] Embodiment 1

[0057] An impact torque type drill pipe disassembly tooling of this embodiment, such as Figure 1 , Figure 2 and Figure 3As shown, it at least includes a first collar 1 and a second collar 2 which are coaxially and oppositely arranged to ensure the stability of torque transmission. During the drill pipe disassembly process, the coaxial and opposite arrangement enables the first collar and the second collar to maintain a high degree of concentricity when rotating. This ensures that the impact torque can be stably transmitted along the axis direction, avoiding additional vibration and torque loss caused by eccentricity, thereby improving the efficiency of torque transmission, enabling the tooling to act on the drill pipe threads more effectively, and helping to overcome large thread torques.

[0058] As Figure 6 and Figure 7 shown, the first collar 1 is provided with a first installation cavity 11 that axially penetrates through it. The first installation cavity provides space for the connection between the first collar and the output end of the drill rig or the output end of the power head, and the first installation cavity is adapted to the output end of the drill rig or the output end of the power head to form a reliable connection, enabling the first collar to be accurately installed on the output end of the drill rig or the output end of the power head. At least one first protrusion 12 extending along the axis of the first installation cavity towards the second collar is provided at one end of the first collar 1 close to the second collar 2. It extends along the axis direction and can accurately strike the second protrusion on the second collar when the first collar rotates relative to the second collar. With such a structural design, the transmission of the impact force is more direct and efficient, enabling the energy generated by the rotational motion to be concentrated and converted into impact torque, effectively enhancing the ability to disassemble the drill pipe threads.

[0059] As Figure 5 shown, the second collar 2 is provided with a second installation cavity 21 that is coaxially penetrated with the first installation cavity 11, ensuring the symmetry and stability of the entire tooling structure. With such a coaxial structure, the first collar and the second collar can maintain a stable motion trajectory when rotating relative to each other, reducing additional stress and vibration caused by structural asymmetry, and improving the working accuracy and reliability of the tooling. A second protrusion 22 matching the first protrusion is provided at one end of the second collar 2 close to the first collar 1. The first protrusion can accurately strike the second protrusion. This matching design ensures the effective transmission of the impact force, avoiding energy loss or impact failure caused by structural mismatch. The second protrusion 22 and the first protrusion 12 are arranged in a staggered manner around the axis direction of the second installation cavity. The first collar 1 rotates relative to the second collar 2 around the axis direction, driving the first protrusion 12 to strike the second protrusion 22, thereby transmitting the impact torque to the second collar 2. When facing the task of disassembling a drill pipe with a large thread torque, the staggered first protrusion and second protrusion can generate sufficient impact torque to break through the torque limit, ensuring that the drill pipe can be smoothly disassembled and effectively solving the problem of the inability to disassemble a drill pipe with a large thread torque.

[0060] As Figure 1 and Figure 4As shown, an impact surface 121 is provided on the side where the first convex portion 12 impacts the second convex portion 22. The second convex portion is provided with a bearing surface 221 adapted to the impact surface. The first convex portion impacts the bearing surface 221 through the impact surface 121, thereby impacting the second convex portion. The design of the impact surface being adapted to the bearing surface enables the first convex portion to transfer energy more concentratedly and effectively when impacting the second convex portion during impact. The adapted surface shape can ensure that the impact force acts along a predetermined direction and manner, reducing the dispersion and loss of energy, thereby improving the generation efficiency of the impact torque. On the other hand, the use of the impact surface and bearing surface design can increase the contact area and stability between the first convex portion and the second convex portion. During frequent impacts, the adapted surfaces can better disperse the impact force, avoiding local stress concentration, thereby reducing the wear and damage of the convex portions and improving the service life and reliability of the tooling.

[0061] The normal directions of the impact surface 121 and the bearing surface 221 are perpendicular to the rotation radius of the first collar 1. With such a structural design, the tangential force generated by the rotation of the first collar can be most effectively converted into an impact force and directly transmitted to the second collar along the normal direction. This perpendicular relationship ensures that the force transmission path is the shortest and most direct, reducing the loss and deflection of the force during transmission, thereby improving the transmission efficiency of the impact torque and enhancing the disassembly ability of the tooling for the drill pipe thread.

[0062] In this embodiment, the cross-section of the first convex portion 12 and / or the second convex portion 22 perpendicular to the axis direction of the first installation cavity is a sector ring. In this embodiment, both the first convex portion 12 and the second convex portion 22 adopt a sector ring cross-section structure.

[0063] Preferably, the central angle range of the sector ring is 30° - 60°. Compared with other simple shapes (such as rectangles, triangles, etc.), the sector ring shape can disperse stress more evenly when bearing impact force and pressure. Its arc edge avoids stress concentration, making it less likely for the convex portion to be locally damaged during impact. When the central angle is within the range of 30° - 60°, it not only ensures sufficient contact area to transmit the impact force but also avoids structural bulkiness and uneven stress distribution caused by excessive area.

[0064] As Figure 4 and Figure 7As shown, the first convex portions 12 are evenly arranged radially around the axis of the first installation cavity 11, and the second convex portions 22 are evenly arranged radially around the axis of the second installation cavity 21. The first convex portions and the second convex portions are arranged alternately one by one around the axis of the second installation cavity. With such a structural design, on the one hand, when the first collar rotates relative to the second collar, each convex portion can participate in the impact synchronously and evenly. This uniform distribution method avoids the impact torque concentrating on a certain point or area, but evenly transfers the torque to the drill pipe thread, thereby improving the overall disassembly efficiency and avoiding the thread damage caused by unilateral impact on the drill pipe thread.

[0065] In this embodiment, as Figure 4 and Figure 7 shown, the first collar 1 adopts a split structure and at least includes a first half collar 13 and a second half collar 14 that are symmetrically distributed. One end of the outer periphery of the first half collar bulges outward to form a first installation portion 131, and one end of the outer periphery of the second half collar bulges outward to form a second installation portion 141 that is adapted to the first installation portion. The first half collar and the second half collar are buckled through the first installation portion and the second installation portion to form the first installation cavity 11. The outer edge position of the first installation portion 131 extends towards the second half collar 14 to form a positioning groove 132 for accommodating the second installation portion 141. The positioning groove can accurately accommodate the second installation portion. During the installation process of the first collar, on the one hand, the second half collar and the first half collar can be quickly and accurately positioned, ensuring the accurate relative position between the two and avoiding the problems of assembly difficulties and subsequent work instability caused by position deviation; on the other hand, the assembly process is simplified, the assembly time and labor costs are reduced, the installation efficiency of the first collar is improved, and the tooling can be put into use faster.

[0066] In this embodiment, as Figure 6 and Figure 7 shown, the first collar 1 is provided with two first convex portions 12 that are symmetrically distributed along the axis of the first installation cavity. The two first convex portions are respectively located at the outer peripheral center positions of the first half collar 13 away from the first installation portion 131 and the second half collar 14 away from the second installation portion 141. On the one hand, the two first convex portions simultaneously impact the second convex portions of the second collar, which can generate a greater impact torque, enhancing the disassembly ability of the tooling for the drill pipe thread and helping to overcome a larger thread torque; on the other hand, the symmetric structure enables the stress to be evenly distributed between the two second convex portions, reducing the local stress concentration phenomenon and improving the service life of the first convex portion and the second convex portion and the reliability of the tooling.

[0067] As Figure 6 and Figure 7 ​As shown, a positioning portion 111 for circumferentially positioning the first collar 1 is provided on the inner wall of the first installation cavity 11. In this embodiment, the inner wall of the first installation cavity 11 is recessed inward to form parallel positioning surfaces, so as to be adapted to the drill rig connection sleeve 3.

[0068] In this embodiment, the first collar and the second collar have the same structure. On the one hand, the same structure enables the first collar and the second collar to be interchangeably used, improving the versatility and flexibility of the tooling and reducing the types and costs of spare parts; on the other hand, the unified structural design simplifies the manufacturing process, reduces the manufacturing difficulty and cost. At the same time, during maintenance, it is more convenient to replace the damaged collar, reducing the maintenance time and workload.

[0069] Embodiment Two

[0070] This embodiment provides a disassembly method for an impact torque type drill pipe disassembly tooling as described in any one of the above, at least including the following steps:

[0071] Step S1, install the first collar 1 on the output end of the drill rig, and install the second collar 2 on the drill pipe 4 to be disassembled;

[0072] Step S2, clamp and fix the adjacent drill pipe 5 connected to the drill pipe to be disassembled;

[0073] Step S3, start the drill rig so that the rotation direction of the output end of the drill rig is the same as the loosening direction of the drill pipe 4 to be disassembled;

[0074] Step S4, the output end of the drill rig drives the first collar 1 to rotate relative to the second collar, and the first convex portion 12 impacts the second convex portion 22, converting the static torque of the drill rig into impact torque;

[0075] Step S5, under the action of the impact torque, the second collar 2 drives the drill pipe 4 to be disassembled to rotate relative to the adjacent drill pipe 5, loosening the connection between the drill pipe to be disassembled and the adjacent drill pipe.

[0076] In this embodiment, step S1 specifically includes the following steps:

[0077] Step S101, insert the end of the drill rig connection sleeve 3 into the first installation cavity 11 of the first collar 1, and the first collar 1 is fixedly installed on the output end of the drill rig through the first installation cavity 11, and the first convex portion 12 of the first collar is oriented towards the drill pipe to be disassembled;

[0078] Step S102, insert the free end of the drill pipe 4 to be disassembled into the second installation cavity 21 of the second collar 2, and the second collar 2 is fixedly installed on the free end of the drill pipe to be disassembled through the second installation cavity 21, and the second convex portion 22 of the second collar is oriented towards the first convex portion;

[0079] Step S103: Arrange the first convex part 12 and the second convex part 22 in a staggered manner around the axis direction of the second installation cavity 21.

[0080] Preferably, step S1 further includes the following steps:

[0081] Adjust the phase difference between the first convex part 12 and the second convex part 22 corresponding to the impact to be greater than 30°.

[0082] In this embodiment, a disassembly method of an impact torque type drill pipe disassembly tooling further includes the following steps:

[0083] Step S7: If after steps S3, S4, and S5, the connection between the drill pipe to be disassembled and the adjacent drill pipe is not loose, then correspondingly expand the phase difference between the first convex part 12 and the second convex part 22 corresponding to the impact, and repeat steps S3, S4, and S5.

[0084] In summary, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An impact torque type drill pipe disassembly tool, characterized in that: It at least comprises a first ring (1) and a second ring (2) which are coaxially arranged opposite to each other; The first collar (1) is provided with a first installation cavity (11) extending axially therethrough, and at least one first protrusion (12) extending toward the second collar along the axis of the first installation cavity is provided near one end of the second collar (2); The second collar (2) is provided with a second installation cavity (21) coaxially penetrating the first installation cavity (11), and a second convex portion (22) matching the first convex portion is provided near one end of the first collar (1); The second protrusion (22) and the first protrusion (12) are arranged in a staggered manner around the axial direction of the second installation cavity, and the first ring (1) rotates relative to the second ring (2) around the axial direction, driving the first protrusion (12) to collide with the second protrusion (22), thereby transmitting an impact torque to the second ring (2).

2. The impact torque drill rod disassembly tool according to claim 1, characterized in that: A collision surface (121) is provided on the side where the first convex portion (12) collides with the second convex portion (22), and the second convex portion is provided with a bearing surface (221) matched with the collision surface, and the first convex portion collides with the bearing surface (221) via the collision surface (121), thereby colliding with the second convex portion.

3. The impact torque type drill rod disassembly tool according to claim 2, characterized in that: The normal directions of the impact surface (121) and the bearing surface (221) are arranged perpendicular to the rotation radius of the first sleeve ring (1).

4. An impact torque drill rod disassembly tool according to any one of claims 1 to 3, characterized in that: The first protrusions (12) are evenly arranged in a radial shape around the axial direction of the first mounting cavity (11); The second protrusions (22) are evenly arranged in a radial shape around the axial direction of the second mounting cavity (21); The second protrusions and the first protrusions are arranged alternately one by one around the axis direction of the second installation cavity.

5. The impact torque type drill rod removal tool according to claim 4, characterized in that: At least one positioning portion (111) for circumferential positioning is provided on the inner wall of the first installation cavity (11) and / or the second installation cavity (21).

6. An impact torque type drill pipe disassembly tool according to any one of claims 1 to 3 or 5, characterized in that: The first ring and the second ring have the same structure.

7. A method for disassembling the impact torque drill rod disassembly tool as claimed in claims 1 to 6, characterized in that: At least the following steps are included: Step S1, installing the first ring (1) on the output end of the drilling rig, and installing the second ring (2) on the drill rod (4) to be disassembled; Step S2, clamping and fixing the adjacent drill rod (5) connected to the drill rod to be removed; Step S3, starting the drilling machine so that the rotation direction of the output end of the drilling machine is the same as the unscrewing direction of the drill rod (4) to be disassembled; Step S4, the output end of the drilling rig drives the first ring (1) to rotate relative to the second ring, and the first protrusion (12) hits the second protrusion (22), thereby converting the static torque of the drilling rig into impact torque; Step S5: under the action of impact torque, the second ring (2) drives the drill rod (4) to be disassembled to rotate relative to the adjacent drill rod (5), so that the connection between the drill rod to be disassembled and the adjacent drill rod is loosened.

8. The impact torque type drill pipe removal tool according to claim 7, characterized in that: The step S1 specifically includes the following steps: Step S101, extending the end of the drilling rig connection sleeve (3) into the first installation cavity (11) of the first collar (1), the first collar (1) is fixedly installed on the output end of the drilling rig through the first installation cavity (11), and the first protrusion (12) of the first collar is facing the direction of the drill rod to be disassembled; Step S102, inserting the free end of the drill pipe (4) to be disassembled into the second installation cavity (21) of the second collar (2), and fixing the second collar (2) to the free end of the drill pipe to be disassembled through the second installation cavity (21), and making the second protrusion (22) of the second collar face the direction of the first protrusion; Step S103, arranging the first convex portion (12) and the second convex portion (22) in a staggered manner around the axial direction of the second mounting cavity (21).

9. The impact torque type drill pipe removal tool according to claim 8, characterized in that: The step S1 further comprises the following steps: The phase difference between the first convex portion (12) and the correspondingly impacted second convex portion (22) is adjusted to be greater than 30°.

10. An impact torque drill rod disassembly tool according to any one of claims 7 to 9, characterized in that: The following steps are also included: Step S7, if after steps S3, S4 and S5, the connection between the drill rod to be disassembled and the adjacent drill rod is not loose, then the phase difference between the first convex part (12) and the corresponding second convex part (22) is correspondingly enlarged, and steps S3, S4 and S5 are repeated.

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