A thread tightening device for drill pipe joint mating

Abstract

This utility model provides a threaded tightening device for drill pipe joint mating, including a worktable. A first mating bracket and a second mating bracket are fixedly connected above the worktable. A second driving component is fixedly connected to the inner side of the first mating bracket, and a first driving component is fixedly connected to the outer side of the second mating bracket. Multiple mating rollers are fixedly connected to the power output end of the second driving component. A drill pipe joint is rotatably connected above the mating rollers. Multiple rotating brackets are fixedly connected above the worktable. Positioning shafts one and two are rotatably connected to the inner sides of the two rotating brackets, respectively. The L-shaped brackets can be driven by a positioning push rod to move the positioning pressure plate and positioning rollers downwards to press the drill pipe joint. Flexible fixing can be achieved using universal ball bearings and positioning rollers, effectively suppressing jumps during rotation. Operation is simple. When loading and unloading the drill pipe joint, the L-shaped brackets can be flipped to make room, facilitating hoisting operations and improving the flexibility and safety of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of drill pipe connection technology, and in particular to a thread tightening device for drill pipe joint connection. Background Technology

[0002] Drill pipe is an indispensable key component in oil and gas drilling operations, forming the main body of the drill string. Structurally, a single drill pipe is a hollow, thick-walled steel pipe several meters to over ten meters long, connected at both ends by precision-machined threads (male and female connectors). This allows hundreds or even thousands of drill pipes to be strung together downhole into a powerful power transmission channel leading directly from the drilling rig to the drill bit. In the complex processes of oil exploration and extraction, the performance of the drill pipe's threaded connections directly affects the safety and efficiency of the entire drilling operation, as it serves as a crucial component connecting drilling tools and transmitting power and torque.

[0003] Due to the harsh working environment downhole, drill pipe joint threads must not only withstand enormous axial tensile and compressive forces, but also cope with the complex torque generated during drilling. If potential problems that may arise in the actual use of drill pipe joint threads can be identified and resolved in advance, operational safety and efficiency can be improved. Therefore, it is extremely important to pre-grind the threads of male and female joints during the production of drill pipe joints. At this time, equipment is needed to quickly test whether the drill pipe joints can be properly connected. Utility Model Content

[0004] In view of this, the present invention aims to provide a thread tightening device for drill pipe joint mating, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0005] The technical solution of this utility model embodiment is implemented as follows: A threaded tightening device for drill pipe joint mating includes a worktable. A mating bracket 1 and a mating bracket 2 are fixedly connected above the worktable. A driving component 2 is fixedly connected to the inner side of the mating bracket 1, and a driving component 1 is fixedly connected to the outer side of the mating bracket 2. Multiple mating rollers are fixedly connected to the power output end of the driving component 2. A drill pipe joint is rotatably connected above the mating rollers. Multiple rotating brackets are fixedly connected above the worktable. A positioning shaft 1 and a positioning shaft 2 are rotatably connected to the inner side of the two rotating brackets respectively. Multiple L-shaped brackets are fixedly connected above the positioning shaft 1 and the positioning shaft 2 respectively. A positioning pressure plate is fixedly connected to the upper side of the L-shaped bracket above the positioning shaft 2. Multiple universal ball bearings are fixedly connected to the lower side of the positioning pressure plate. A positioning roller is rotatably connected to the upper side of the L-shaped bracket above the positioning shaft 1.

[0006] In some embodiments, the drive assembly one and drive assembly two include a rotary motor, drive rollers, synchronous pulleys and synchronous belts. The drive rollers are fixedly connected to the power output end of the rotary motor, and multiple synchronous belts and drive rollers are connected by synchronous pulley transmission.

[0007] In some embodiments, the rotary motor on one side of the second drive assembly is fixedly connected to the inside of the first docking bracket, and the synchronous belt on one side of the second drive assembly is fixedly connected to one end of the docking roller, and the docking roller is rotatably connected to the inside of the first docking bracket.

[0008] In some embodiments, a plurality of support platforms are fixedly connected to one side of the workbench, and a positioning push rod is rotatably connected above the support platforms.

[0009] In some embodiments, one side of the positioning shaft one and the positioning shaft two are respectively fixedly connected to a drive link, and the other end of the drive link is rotatably connected to the movable end above the positioning push rod on the corresponding side.

[0010] In some embodiments, an external hexagonal rod is rotatably connected to one side of the docking bracket 2, a rotary motor on one side of the drive assembly 1 is fixedly connected to the top of the docking bracket 2, and a synchronous belt on one side of the drive assembly 1 is fixedly connected to the other end of the external hexagonal rod.

[0011] In some embodiments, a translation bracket is fixedly connected above one side of the second docking bracket, and a lead screw nut is slidably connected above the translation bracket.

[0012] In some embodiments, the upper end of the translation bracket is fixedly connected to the motor end of an electric lead screw, and the screw end of the electric lead screw is threaded to the inside of the lead screw nut.

[0013] In some embodiments, a translation fork is fixedly connected above the lead screw nut, and the translation fork is slidably connected above the translation support.

[0014] In some embodiments, a docking sleeve is slidably connected to the outer side of the external hexagonal rod, and a drive groove is opened on one side of the docking sleeve. The translation fork is rotatably connected to the docking sleeve.

[0015] The present invention has the following advantages due to the adoption of the above technical solution:

[0016] 1. A threaded tightening device for drill pipe joint mating, wherein an L-shaped bracket can be driven by a positioning push rod to drive a positioning pressure plate and a positioning roller to press the drill pipe joint downward. Flexible fixing can be achieved by using universal ball bearings and positioning rollers, effectively suppressing the jumping during rotation. The device is easy to operate. When loading and unloading the drill pipe joint, the L-shaped bracket can be flipped to make room, which facilitates the operation of hoisting equipment and improves the flexibility and safety of equipment use.

[0017] 2. A thread tightening device for drill pipe joint mating, wherein drive assembly one and drive assembly two drive the mating roller and the external hexagonal rod to rotate respectively, so that the drill pipe joints on both sides can rotate simultaneously in opposite directions. Since the inner hole of the mating sleeve and the cross section of the external hexagonal rod are matched, torque can be transmitted during rotation, thereby driving the drill pipe joint to rotate smoothly. This realizes synchronous drive of the drill pipe joint during rotation, which is conducive to smooth thread engagement and improves the stability and efficiency of mating.

[0018] 3. Pre-grinding can effectively reduce the risk of drill pipe failure during actual drilling, improve the safety and success rate of drilling operations, and also help extend the service life of drill pipes, reduce drilling costs, and provide a solid guarantee for the efficient and stable development of the petroleum industry.

[0019] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is the main view of the present invention.

[0022] Figure 2 This is an installation structure diagram of the docking bracket of this utility model;

[0023] Figure 3 This is a side view of the present invention.

[0024] Figure 4 This is a diagram showing the installation structure of the universal ball bearing of this utility model;

[0025] Figure 5 This is a structural diagram of the translation fork frame of this utility model.

[0026] Figure label:

[0027] 1. Workbench; 2. Docking bracket one; 3. Docking bracket two; 4. Drive assembly one; 5. Drive assembly two; 6. Docking roller; 7. Rotating bracket; 8. Support platform; 9. Positioning push rod; 10. Drive connecting rod; 11. Positioning rotating shaft one; 12. L-shaped bracket; 13. Positioning roller; 14. Rotary motor; 15. Drive roller; 16. Synchronous pulley; 17. Synchronous belt; 18. Positioning rotating shaft two; 19. Positioning pressure plate; 20. Universal ball bearing; 21. External hexagonal rod; 22. Drive groove; 23. Translation fork; 24. Lead screw nut; 25. Electric lead screw; 26. Translation bracket; 27. Docking sleeve. Detailed Implementation

[0028] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0029] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] Example 1:

[0031] like Figure 1-5 As shown, a threaded tightening device for drill pipe joint mating includes a workbench 1. A mating bracket 1 2 and a mating bracket 2 3 are fixedly connected above the workbench 1. A drive assembly 2 5 is fixedly connected to the inner side of the mating bracket 1 2. A drive assembly 4 is fixedly connected to the outer side of the mating bracket 2 3. Multiple mating rollers 6 are fixedly connected to the power output end of the drive assembly 2 5. A drill pipe joint is rotatably connected above the mating rollers 6. Multiple rotating brackets 7 are fixedly connected above the workbench 1. A positioning shaft 1 11 and a positioning shaft 2 18 are rotatably connected to the inner side of the two rotating brackets 7 respectively. Multiple L-shaped brackets 12 are fixedly connected above the positioning shaft 1 11 and the positioning shaft 2 18 respectively. A positioning pressure plate 19 is fixedly connected to the upper side of the L-shaped bracket 12 above the positioning shaft 2 18. Multiple universal ball bearings 20 are fixedly connected to the lower side of the positioning pressure plate 19. A positioning roller 13 is rotatably connected to the upper side of the L-shaped bracket 12 above the positioning shaft 1 11.

[0032] The drive assembly 1 4 and drive assembly 2 5 each include a rotary motor 14, a drive roller 15, a synchronous pulley 16, and a synchronous belt 17. The drive roller 15 is fixedly connected to the power output end of the rotary motor 14. Multiple synchronous belts 17 and drive rollers 15 are connected by transmission through synchronous pulleys 16. On one side of drive assembly 2 5, the rotary motor 14 is fixedly connected to the inside of docking bracket 1 2. On one side of drive assembly 2 5, the synchronous belt 17 is fixedly connected to one end of docking roller 6. The docking roller 6 is rotatably connected to docking bracket 1 2.

[0033] The docking bracket 23 has an external hexagonal rod 21 rotatably connected inside one side. The rotary motor 14 on one side of the drive assembly 4 is fixedly connected to the top of the docking bracket 23. The synchronous belt 17 on one side of the drive assembly 4 is fixedly connected to the other end of the external hexagonal rod 21. A translation bracket 26 is fixedly connected above one side of the docking bracket 23. A lead screw nut 24 is slidably connected above the translation bracket 26.

[0034] An electric lead screw 25 motor end is fixedly connected to the upper end of the translation bracket 26. The screw end of the electric lead screw 25 is threaded to the inside of the lead screw nut 24. A translation fork 23 is fixedly connected above the lead screw nut 24. The translation fork 23 is slidably connected to the upper part of the translation bracket 26. A docking sleeve 27 is slidably connected to the outside of the outer hexagonal rod 21. A drive groove 22 is opened on one side of the docking sleeve 27. The translation fork 23 is rotatably connected to the inside of the docking sleeve 27.

[0035] When installing the drill pipe joint, simply place the drill pipe joint above the docking roller 6 and the docking sleeve 27, that is, place the male and female joints on the two docking rollers and the two docking sleeves. Then, the L-shaped bracket 12 rotates with the positioning shaft 11 and the positioning shaft 28, which can drive the positioning pressure plate 19 and the positioning roller 13 above to rotate. The universal balls at the lower end of the multiple universal ball bearings 20 and the positioning roller 13 are used to squeeze and fix the drill pipe joint to prevent it from jumping when rotating.

[0036] Then, the rotary motors 14 in the drive assembly 1 4 and drive assembly 2 5 are driven simultaneously, which can drive the docking roller 6 and the external hexagonal rod 21 to rotate. At the same time, because the docking sleeve 27 has an opening with the same cross-section as the external hexagonal rod 21, the rotation of the external hexagonal rod 21 can drive the docking sleeve 27 to rotate synchronously. This can drive the drill pipe joints on both sides to rotate in opposite directions at the same time.

[0037] Further start the electric lead screw 25, and drive the upper translation fork 23 to move through one end of the electric lead screw 25, moving the drill pipe joint above the docking sleeve 27 to the drill pipe joint above the docking roller 6. In this way, while the drill pipe joint above the docking sleeve 27 is moving, it can rotate and perform stable threaded connection or threaded disassembly with the drill pipe joint above the docking roller 6.

[0038] During the installation and disassembly (tightening or loosening of threads) of the drill pipe joint, the drill pipe joint can be moved by a crane, robot or other lifting equipment simply by rotating the L-shaped bracket 12, which effectively avoids obstacles and facilitates operation.

[0039] In this embodiment, a plurality of support platforms 8 are fixedly connected to one side of the workbench 1, and a positioning push rod 9 is rotatably connected above the support platform 8. A drive connecting rod 10 is fixedly connected to one side of the positioning rotating shaft 11 and the positioning rotating shaft 2 18 respectively, and the other end of the drive connecting rod 10 is rotatably connected to the movable end above the positioning push rod 9 on the corresponding side.

[0040] By rotating the positioning push rods 9 on both sides simultaneously, the positioning pressure plate 19 and the positioning roller 13 can be driven to flip and move simultaneously and press tightly against the drill rod joints on both sides, which can achieve more stable and effective installation positioning.

[0041] In this embodiment: when grinding the drill pipe joint, it is only necessary to place the drill pipe joint above the docking roller 6 and the docking sleeve 27, and then extend the positioning push rod 9 to push one end of the drive connecting rod 10 to move. Since the other end of the drive connecting rod 10 is fixedly connected to the corresponding positioning rotating shaft 11 or positioning rotating shaft 28, the drive connecting rod 10 will swing during the pushing process, that is, the positioning rotating shaft 11 or positioning rotating shaft 28 will achieve a self-rotation effect. During the self-rotation, the L-shaped bracket 12 can rotate with the positioning rotating shaft 11 and positioning rotating shaft 28, that is, drive the positioning pressure plate 19 and positioning roller 13 above to move in a flipping manner. The universal balls at the lower end of the multiple universal ball bearings 20 and the positioning roller 13 are used to squeeze and fix to prevent the drill pipe joint from jumping when rotating. The universal ball bearings can ensure the squeezing force while not affecting the axial movement of the drill pipe joint.

[0042] Subsequently, the rotary motors 14 in drive assembly 1 4 and drive assembly 2 5 are driven simultaneously to drive the docking roller 6 and the outer hexagonal rod 21 to rotate via the pulley assembly. At the same time, because the inner side of the docking sleeve 27 has an opening with the same cross-section as the outer hexagonal rod 21, the rotation of the outer hexagonal rod 21 can synchronously drive the docking sleeve 27 to rotate. By controlling the rotation direction, the drill pipe joints on both sides can be driven to rotate in opposite directions simultaneously.

[0043] Start the electric lead screw 25, and drive the upper translation fork 23 to move through one end of the electric lead screw 25, moving the drill pipe joint above the docking sleeve 27 towards the drill pipe joint above the docking roller 6. In this way, the drill pipe joint above the docking sleeve 27 can rotate and form a stable threaded connection with the drill pipe joint above the docking roller 6 while it is translating.

[0044] Specifically, when the connecting sleeve is pushed by the translation fork, since the external hexagonal rod only limits the rotational direction of the connecting sleeve and there is no axial limitation, the connecting sleeve can be pushed to move axially without affecting the rotation. That is, the two drill pipe joints rotate in opposite directions, and one drill pipe joint can move towards the other drill pipe joint to simulate the action of two parts approaching each other during threaded connection. During the movement, one drill pipe joint is pressed by the positioning roller and is difficult to push easily in the axial direction, while the other drill pipe joint, because it abuts against the universal ball bearing, is pressed against the two connecting sleeves, and the friction between it and the connecting sleeves increases. Thus, the connecting sleeve can drive the drill pipe joint to move axially. During the axial movement, the universal ball bearing and the drill pipe joint have rolling friction, which does not affect the movement effect.

[0045] During the installation and disassembly of the device, simply rotating the L-shaped bracket 12 is sufficient to open it and then using a crane or other lifting equipment to move the drill pipe joint with slings, or a robotic arm to grab the drill pipe joint, making installation very convenient and quick.

[0046] By rotating the positioning push rods 9 on both sides simultaneously, the positioning pressure plate 19 and the positioning roller 13 can be driven to move downwards at the same time to fix the drill rod joints on both sides, which can achieve more stable and effective installation positioning.

[0047] By changing the rotation direction of the coupling sleeve and coupling roller, the tightening and loosening effects can be achieved. Through repeated thread selection, the purpose of effective thread grinding can be achieved.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A threaded screwing device for the butt joining of drill pipe joints, comprising a worktable (1), characterized in that: The workbench (1) is fixedly connected to a first docking bracket (2) and a second docking bracket (3). The second drive assembly (5) is fixedly connected to the inner side of the first docking bracket (2). The first drive assembly (4) is fixedly connected to the outer side of the second docking bracket (3). Multiple docking rollers (6) are fixedly connected to the power output end of the second drive assembly (5). A drill rod connector is rolled above the docking rollers (6). Multiple rotating brackets (7) are fixedly connected to the top of the workbench (1). Positioning shaft one (11) and positioning shaft two (18) are rotatably connected to the inner side of the rotating brackets (7) on both sides respectively. Multiple L-shaped brackets (12) are fixedly connected above the positioning shaft one (11) and positioning shaft two (18) respectively. A positioning pressure plate (19) is fixedly connected to the upper side of the L-shaped bracket (12) above the positioning shaft two (18). Multiple universal ball bearings (20) are fixedly connected to the lower side of the positioning pressure plate (19). A positioning roller (13) is rotatably connected to the upper side of the L-shaped bracket (12) above the positioning shaft one (11).

2. A threaded make-up apparatus for use in the make-up of a drill pipe joint according to claim 1, characterised in that: The drive assembly one (4) and drive assembly two (5) include a rotary motor (14), a drive roller (15), a synchronous pulley (16) and a synchronous belt (17). The drive roller (15) is fixedly connected to the power output end of the rotary motor (14), and multiple synchronous belts (17) and drive rollers (15) are connected by synchronous pulleys (16).

3. A threaded make-up apparatus for use in the make-up of a drill pipe joint according to claim 2, characterised in that: The rotary motor (14) on one side of the drive assembly 2 (5) is fixedly connected to the inside of the docking bracket 1 (2), and the synchronous belt (17) on one side of the drive assembly 2 (5) is fixedly connected to one end of the docking roller (6). The docking roller (6) is rotatably connected to the inside of the docking bracket 1 (2).

4. A threaded make-up apparatus for use in the make-up of a drill pipe joint as defined in claim 1, characterized in that: The workbench (1) is fixedly connected to one side of a plurality of support platforms (8), and a positioning push rod (9) is rotatably connected above the support platform (8).

5. The thread tightening device for drill pipe joint mating according to claim 4, characterized in that: One side of each of the positioning shafts 1 (11) and 2 (18) is fixedly connected to a drive link (10), and the other end of the drive link (10) is rotatably connected to the movable end above the corresponding positioning push rod (9).

6. A thread tightening device for drill pipe joint mating according to claim 2, characterized in that: The docking bracket 2 (3) is internally rotatably connected to an external hexagonal rod (21) on one side. The rotary motor (14) on one side of the drive assembly 1 (4) is fixedly connected to the top of the docking bracket 2 (3). The synchronous belt (17) on one side of the drive assembly 1 (4) is fixedly connected to the other end of the external hexagonal rod (21).

7. A thread tightening device for drill pipe joint mating according to claim 6, characterized in that: A translation bracket (26) is fixedly connected above one side of the docking bracket (3), and a screw nut (24) is slidably connected above the translation bracket (26).

8. A thread tightening device for drill pipe joint mating according to claim 7, characterized in that: The upper end of the translation bracket (26) is fixedly connected to the motor end of the electric lead screw (25), and the screw end of the electric lead screw (25) is threaded to the inside of the lead screw nut (24).

9. A thread tightening device for drill pipe joint mating according to claim 8, characterized in that: A translation fork (23) is fixedly connected above the lead screw nut (24), and the translation fork (23) is slidably connected above the translation support (26).

10. A threaded tightening device for drill pipe joint mating according to claim 6, characterized in that: The outer hexagonal rod (21) is slidably connected to a docking sleeve (27), and a drive groove (22) is opened on one side of the docking sleeve (27). The translation fork (23) is rotatably connected inside the docking sleeve (27).

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