Iron roughneck spinner

Abstract

The utility model discloses an iron roughneck spinner which comprises a spinning roller mechanism, a multi-stage lifting assembly, a suspension assembly and a supporting frame assembly, the suspension assembly is rotatably connected with the supporting frame assembly, the supporting frame assembly is connected with the spinning roller mechanism, and the multi-stage lifting assembly is connected with the suspension assembly. The multi-stage lifting assembly can drive the suspension assembly to move so as to be used for adjusting the distance between the spinning roller mechanism and the clamp body assembly, and the installation distance between the spinning roller mechanism and the clamp body assembly can be shortened. The space for lifting the spinner can be saved in the limited installation space, meanwhile, the multi-stage lifting assembly can complete multi-stage adjustment of the spinner and the tong body assembly, the lifting adjustment function of the spinner is achieved, and the screwing and unscrewing requirements of special drilling tools such as centralizers can be met.

Description

Technical Field

[0001] This utility model relates to the field of iron drill technology, and in particular to an iron drill screw fastener. Background Technology

[0002] The iron drill bit is an automated rotary coupling device widely used in oil and gas field drilling due to its high efficiency and good operational stability. An iron drill bit typically consists of a tong assembly and a rotary coupling device. The tong assembly generally includes a main tong and a back tong. During operation, the tong assembly holds one lower drill string, while the rotary coupling device holds the other upper drill string. The drill bit is then coupled or uncoupled to complete the coupling function.

[0003] Currently, most iron driller spinners move with the overall lifting and lowering of the tongs assembly. The height distance between the spinner and the tongs assembly is very small or even non-adjustable. This makes it impossible for these iron drillers to handle drill tools such as drill stabilizers, as well as some special length drill sections and pipe clamps that are frequently used in the drilling process. They need to use other drilling platform tools to handle these, which is very inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a rotary screwdriver that solves the problem that the height distance between the rotary screwdriver and the clamp assembly is very small or even non-adjustable in the prior art.

[0005] This utility model is implemented as follows: a steel drill maker's rotary hook includes a rotary wheel mechanism, a multi-stage lifting assembly, a suspension assembly, and a support frame assembly. The suspension assembly is rotatably connected to the support frame assembly, the support frame assembly is connected to the rotary wheel mechanism, and the multi-stage lifting assembly is connected to the suspension assembly.

[0006] The multi-stage lifting assembly can drive the suspension assembly to move, thereby adjusting the distance between the rotating wheel mechanism and the clamp assembly, and shortening the installation distance between the rotating wheel mechanism and the clamp assembly.

[0007] In existing technologies, the height adjustment range between the rotary coupling and the tong assembly is very small. Therefore, in some special cases, other tools are needed to handle the situation, which seriously affects work efficiency. In this utility model, the drive used to raise and lower the rotary wheel mechanism is a multi-stage lifting assembly, which can reduce the initial installation height of the rotary coupling for iron drills. In the space-constrained installation space, it can save space for raising and lowering the rotary coupling. At the same time, the multi-stage lifting assembly can complete the multi-stage adjustment of the rotary coupling and the tong assembly, realizing the lifting and adjustment function of the rotary coupling, which can adapt to the requirements of adding and removing couplings on special drill tools such as stabilizers.

[0008] A further improvement of this utility model: The multi-stage lifting assembly includes a multi-stage telescopic hydraulic cylinder, which is disposed between the rotating wheel mechanism and the clamp assembly and connected to the suspension assembly. The telescopic direction of the multi-stage telescopic hydraulic cylinder is consistent with the center line of the clamping space of the clamp assembly. The multi-stage telescopic hydraulic cylinder's location between the rotating wheel mechanism and the clamp assembly, and its telescopic direction consistent with the center line of the clamping space of the clamp assembly, ensures that the telescopic hydraulic cylinder's telescopic movement does not affect the concentricity of the clamp assembly and the rotary fastener.

[0009] A further improvement of this invention is that the multi-stage lifting assembly further includes a lifting seat assembly. The lifting seat assembly includes a first guide rail, a second guide rail, and a third guide rail that slide / roll sequentially along the extension / retraction direction of the multi-stage telescopic cylinder. The third guide rail is connected to the suspension assembly. One end of the multi-stage telescopic cylinder is connected to the first guide rail, and the other end is connected to the suspension assembly. During the movement of the multi-stage telescopic cylinder, the first, second, and third guide rails are stretched or compressed relative to each other, achieving multi-stage adjustment. This effectively reduces the initial installation height of the rotary hook and provides conditions for the lifting and adjustment of the rotary hook.

[0010] A further improvement of this utility model is that a first limiting screw is provided at the end of the first guide rail, and a second limiting screw is provided at the end of the second guide rail. To prevent the lifting seat assembly from sliding off the corresponding guide rail during extension and retraction, limiting screws are provided at the ends of both the first and second guide rails.

[0011] A further improvement of this utility model: the rotating wheel mechanism includes two sets of rotating wheel assemblies, which can move relative to or away from each other in the horizontal direction along the support assembly. Each rotating wheel assembly includes a rotating wheel body, a rotating wheel bracket, and a rotating wheel sliding bracket. The rotating wheel body is rotatably connected to the rotating wheel bracket. The rotating wheel bracket of at least one set of rotating wheel assemblies is rotatably connected to the rotating wheel sliding bracket. The rotation axis of the rotating wheel bracket is perpendicular to the sliding axis of the rotating sliding bracket. A reset member is rotatably connected between the rotating bracket and the rotating sliding bracket.

[0012] After the height of the rotary wheel mechanism is adjusted to the correct position, the rotary wheel mechanism moves horizontally relative to the support assembly, clamping the drill bit from both sides. Combined with the main tongs whose clamping center is aligned with the rotary wheel mechanism, the rotation of the rotary wheel mechanism enables the coupling and uncoupling of the drill bit. However, for drill bits of different diameters, existing rotary couplings exert additional radial force on the pipe, causing the center positions of the rotary coupling and the main tongs to be inconsistent. This leads to misalignment and eccentricity during coupling. The rotary wheel support and rotary wheel slide are rotatably connected, releasing rotational freedom and enabling self-alignment during clamping. Simultaneously, the reset element between the rotary wheel support and the rotary wheel slide mitigates the eccentricity caused by drill bit outer diameter deviations during drill bit advancement. This solves the problem of misalignment between the drill bit axis held by the rotary coupling and the drill bit axis held by the tongs assembly, thus addressing the issues of reduced work efficiency and quality for drillers.

[0013] A further improvement of this invention is that the rotating wheel body is rotatably connected to the rotating wheel bracket via a pin. After the rotating wheel bracket is adjusted to the correct position, the rotating wheel body can rotate on its own.

[0014] A further improvement of this utility model: the reset component includes a slide cylinder, a slide rod, and a spring. One end of the slide rod can slide along the inside of the slide cylinder, and the spring is placed between the slide cylinder and the slide rod. When the rotary wheel body is subjected to an external force, the slide rod slides along the slide cylinder, and the spring is compressed, allowing the rotary wheel body to adapt to different drilling tools. After the external force disappears, the reset component resets under the action of the spring.

[0015] A further improvement of this utility model: The suspension assembly includes a cantilever and a connecting arm. The cantilever is connected to a multi-stage lifting assembly, and both ends of the connecting arm are connected to the cantilever and the support frame assembly respectively via spherical bearings. The upper part of the connecting arm is flexibly connected to the cantilever via spherical bearings, and the lower part of the connecting arm is flexibly connected to the support frame assembly via spherical bearings. The connecting arm can also adopt a two-shackle structure. The flexible connection at both ends of the connecting arm releases rotational freedom, and the flexible suspension gives the rotary buckle better adaptability.

[0016] A further improvement of this utility model: The support frame assembly includes a frame body, a guide shaft, a clamping cylinder, and a center-of-gravity adjusting slider. The guide shaft is connected to both sides of the frame body. The clamping cylinder drives the rotating wheel mechanism to slide along the guide shaft. The center-of-gravity adjusting slider is slidably disposed on both sides of the frame body and rotatably connected to the suspension assembly. The center-of-gravity adjusting slider is provided with an adjusting component for locking the center-of-gravity adjusting slider and the frame body. The clamping cylinder drives the rotating wheel mechanism to move relative to each other along the guide shaft, which can clamp drill bits of different diameters. Moreover, the center position of the rotating wheel mechanism remains unchanged during the clamping process, thus further ensuring the effectiveness of the rotary clamp. The center-of-gravity adjusting slider is rotatably connected to the suspension assembly and slidably connected to the frame body. The frame body is connected to the rotating wheel mechanism. During the sliding of the center-of-gravity adjusting slider along the frame body, the center position of the rotating wheel mechanism changes, realizing the horizontal position adjustment of the rotating wheel mechanism to adapt to the clamping center of the main clamp.

[0017] A further improvement of this utility model is that the frame has scale lines on both sides to indicate the position of the center of gravity adjustment sliders. The scale lines on the frame allow for a direct visual understanding of the positions of the center of gravity adjustment sliders on both sides, facilitating the adjustment of the sliders to be in the same position and ensuring the center of gravity of the rotary fastener is maintained.

[0018] The beneficial effects of this utility model are as follows: This utility model rotatably connects the rotating wheel body to the bracket, and the bracket and mounting frame are connected by a hinge, releasing rotational freedom and enabling self-adaptive alignment during clamping and screwing. Simultaneously, the elastic component between the bracket and the mounting frame can mitigate the misalignment caused by deviations in the outer diameter of the drill bit during screwing. This solves the problem of misalignment between the drill bit axis held by the rotary coupling and the drill bit axis held by the tong assembly, thus addressing the issues of reduced work efficiency and quality for drillers.

[0019] The rotary locking mechanism in this utility model adopts a clamping mechanism. The movement trajectory of the rotary locking mechanism is a straight line, and the center remains unchanged when clamping drill bits of different diameters.

[0020] The rotary coupling device in this utility model is equipped with an independent lifting system, which can arbitrarily adjust the height distance between the rotary coupling device and the main clamp, enabling drillers to handle special drilling tool loading and unloading operations such as drill tool stabilizers used in the drilling process. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the iron drill screw fastener of this utility model.

[0022] Figure 2 This is a three-dimensional structural diagram of the iron drill screwdriver of this utility model in the lifting state.

[0023] Figure 3 This is an exploded three-dimensional structural diagram of the iron drill screw fastener of this utility model.

[0024] Figure 4 This is a three-dimensional structural diagram showing the connection between the multi-stage lifting assembly and the suspension assembly.

[0025] Figure 5 This is a three-dimensional structural diagram of the lifting suspension assembly.

[0026] Figure 6 This is a three-dimensional structural diagram of the second slide rail.

[0027] Figure 7 This is a three-dimensional structural diagram of the support frame assembly.

[0028] Figure 8 This is a three-dimensional structural diagram of the first rotating wheel assembly.

[0029] Figure 9 This is a three-dimensional structural diagram of the second rotating wheel assembly.

[0030] Figure 10 This is a schematic diagram of the drive system for the rotary wheel mechanism.

[0031] Figure 11 This is a top view of the wheel mechanism.

[0032] Figure 12 This is a sectional view of BB.

[0033] Figure 13 This is a cross-sectional view of AA.

[0034] Figure 14 A schematic diagram of the open structure of the rotating wheel mechanism.

[0035] Figure 15 This is a schematic diagram of the closed structure of the rotary wheel mechanism.

[0036] Reference numerals: 1. Rotating wheel mechanism; 11. Rotating wheel body; 111. Upper drive shaft; 112. Lower drive shaft; 113. First bolt; 12. Rotating wheel bracket; 13. Rotating wheel sliding bracket; 14. Reset component; 141. Slide cylinder; 142. Slide rod; 143. Spring; 144. First pin; 145. Second pin; 15. Shaft.

[0037] 2. Multi-stage lifting assembly; 21. Lifting seat assembly; 211. First guide rail; 212. First guide groove; 213. First limit screw; 214. Second guide rail; 215. Second guide groove; 216. Second limit screw; 217. Third guide rail; 218. First composite roller bearing assembly; 219. Second composite roller bearing assembly; 22. Multi-stage telescopic hydraulic cylinder; 23. Pin shaft; 24. Hydraulic cylinder lug seat.

[0038] 3. Suspension assembly; 31. Cantilever; 32. Connecting arm; 33. Double lug mount;

[0039] 4. Support frame assembly; 41. Frame body; 411. Bolt; 412. Center of gravity adjustment screw; 413. Locking nut; 42. Guide shaft; 43. Clamping cylinder; 44. Center of gravity adjustment slider.

[0040] 6. First rotating wheel assembly; 61. Drive motor; 62. Drive gear; 63. Driven gear; 64. First sliding frame; 7. Second rotating wheel assembly. Detailed Implementation

[0041] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0042] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0043] Example 1:

[0044] Figure 1-15 A rotary hook for iron drills is shown, including a rotary wheel mechanism 1, a multi-stage lifting assembly 2, a suspension assembly 3, and a support frame assembly 4. The suspension assembly 3 is rotatably connected to the support frame assembly 4, the support frame assembly 4 is connected to the rotary wheel mechanism 1, and the multi-stage lifting assembly 2 is connected to the suspension assembly 3.

[0045] The multi-stage lifting assembly 2 can drive the suspension assembly 3 to move, so as to adjust the distance between the rotating wheel mechanism 1 and the clamp body assembly, and can shorten the installation distance between the rotating wheel mechanism 1 and the clamp body assembly.

[0046] In existing technologies, the height adjustment range between the rotary coupling and the tong assembly is very small. Therefore, in some special cases, other tools are needed to handle the situation, which seriously affects work efficiency. In this utility model, the drive used to raise and lower the rotary wheel mechanism is a multi-stage lifting assembly, which can reduce the initial installation height of the rotary coupling for iron drills. In the space-constrained installation space, it can save space for raising and lowering the rotary coupling. At the same time, the multi-stage lifting assembly can complete the multi-stage adjustment of the rotary coupling and the tong assembly, realizing the lifting and adjustment function of the rotary coupling, which can adapt to the requirements of adding and removing couplings on special drill tools such as stabilizers.

[0047] In this embodiment, the multi-stage lifting assembly 2 includes a multi-stage telescopic hydraulic cylinder 22. The multi-stage telescopic hydraulic cylinder 22 is disposed between the rotating wheel mechanism 1 and the clamp assembly, and is connected to the suspension assembly 3. The telescopic direction of the multi-stage telescopic hydraulic cylinder 22 is consistent with the center line of the clamping space of the clamp assembly. The multi-stage telescopic hydraulic cylinder's location between the rotating wheel mechanism and the clamp assembly, and its telescopic direction being consistent with the center line of the clamping space of the clamp assembly, ensures that the telescopic movement of the multi-stage telescopic hydraulic cylinder does not affect the concentricity of the clamp assembly and the rotary fastener.

[0048] In this embodiment, the multi-stage lifting assembly 2 further includes a lifting seat assembly 21. The lifting seat assembly 21 includes a first guide rail 211, a second guide rail 214, and a third guide rail 217 that slide / roll sequentially along the extension / retraction direction of the multi-stage telescopic cylinder 22. The third guide rail 217 is connected to the suspension assembly 3. One end of the multi-stage telescopic cylinder 22 is connected to the first guide rail 211, and the other end is connected to the suspension assembly 3. During the movement of the multi-stage telescopic cylinder, the first guide rail, the second guide rail, and the third guide rail are stretched or compressed relative to each other, achieving multi-stage adjustment. This effectively reduces the initial installation height of the rotary hook and provides conditions for the lifting and adjustment of the rotary hook.

[0049] In this embodiment, the multi-stage telescopic cylinder is used to drive the sliding between the lifting seat components. The multi-stage telescopic cylinder is connected to the hydraulic system so that it is in a floating state when the rotary wheel mechanism is working. When the rotary wheel mechanism is working, it can adapt to the small-amplitude lifting and lowering of the drill bit to ensure the working effect of the rotary screw, so as to realize the thread stroke compensation function of the drill bit during the screwing process.

[0050] In this embodiment, the first guide rail 211 is provided with a first guide groove 212 and a first limiting screw 213, the second guide rail 214 is provided with a second guide groove 215 and a second limiting screw 216, and two sets of second composite roller bearing assemblies 219 are respectively provided on both sides of the third guide rail 217, the second composite roller bearing assemblies 219 rollingly engaging with the second guide groove 215; two sets of first composite roller bearing assemblies 218 are respectively provided on both sides of the second guide rail 214, the first composite roller bearing assemblies 218 rollingly engaging with the first guide groove 212, and the second limiting screw 216 and the first limiting screw 213 are used to prevent the second guide rail 214 and the third guide rail 217 from separating when rolling in the first guide groove 212 and the second guide groove 215, so that the third guide rail 217 can move smoothly in the vertical direction.

[0051] In this embodiment, the multi-stage telescopic hydraulic cylinder 22 in the multi-stage lifting assembly 2 is equipped with an overflow valve or a small accumulator. The accumulator or overflow valve is connected to the hydraulic cylinder to ensure that the rotary valve is always in a floating state when working. When tightening or loosening the drill bit joint, it moves up and down with the drill bit to realize the height compensation function of the drill bit thread. When the tightening or loosening action is completed, the rotary valve can achieve a smooth recovery at the moment of release, with small impact, effectively reducing vibration and improving the stability of operation.

[0052] In this embodiment, the lifting seat assembly 21 is provided with a cylinder lug 24, and the cylinder is connected to the cylinder lug 24 via a pin 23.

[0053] In this embodiment, the first guide rail 211 is provided with a first limiting screw 213 at its end, and the second guide rail 212 is provided with a second limiting screw 216 at its end. To prevent the lifting seat assembly from sliding out of the corresponding guide rail during the extension and retraction process, limiting screws are provided at the ends of both the first and second guide rails.

[0054] In this embodiment, the rotating wheel mechanism 1 includes two sets of rotating wheel assemblies. The two sets of rotating wheel assemblies can move relative to or away from each other in the horizontal direction along the support assembly 4. Each rotating wheel assembly includes a rotating wheel body 11, a rotating wheel bracket 12, and a rotating wheel sliding bracket 13. The rotating wheel body 11 is rotatably connected to the rotating wheel bracket 12. The rotating wheel bracket 12 of at least one set of rotating wheel assemblies is rotatably connected to the rotating wheel sliding bracket 13. The rotation axis of the rotating wheel bracket 12 is perpendicular to the sliding axis of the rotating sliding bracket 13. A reset member 14 is rotatably connected between the rotating bracket 12 and the rotating sliding bracket 13. After the height of the rotary wheel mechanism is adjusted to the correct position, the rotary wheel mechanism moves horizontally relative to the support assembly, clamping the drill bit from both sides. Combined with the main tongs whose clamping center is aligned with the rotary wheel mechanism, the rotation of the rotary wheel mechanism enables the coupling and uncoupling of the drill bit. However, for drill bits of different diameters, existing rotary couplings exert additional radial force on the pipe, causing the center positions of the rotary coupling and the main tongs to be inconsistent. This leads to misalignment and eccentricity during coupling. The rotary wheel support and rotary wheel slide are rotatably connected, releasing rotational freedom and enabling self-alignment during clamping. Simultaneously, the reset element between the rotary wheel support and the rotary wheel slide mitigates the eccentricity caused by drill bit outer diameter deviations during drill bit advancement. This solves the problem of misalignment between the drill bit axis held by the rotary coupling and the drill bit axis held by the tongs assembly, thus addressing the issues of reduced work efficiency and quality for drillers.

[0055] In this embodiment, the rotating body includes two rotating wheels.

[0056] In this embodiment, the end of the rotating wheel body 11 is detachably connected to the rotating wheel bracket 12. When the rotating wheel body needs to be replaced, it can be replaced by disassembling the lower part of the rotating wheel body, while retaining the connecting parts at the top of the rotating wheel body, which is convenient, quick, and shortens downtime.

[0057] In this embodiment, one end of the rotating wheel body 11 is connected to the drive for the rotation of the rotating wheel body via the upper drive shaft 111, and the other end is connected to the rotating wheel bracket 12 via the lower drive shaft 112. The rotating wheel body 11 and the upper drive shaft 111 are connected in a hexagonal detachable manner, and the rotating wheel body 11 and the lower drive shaft 112 are connected in a hexagonal detachable manner. The rotating wheel body 11, the upper drive shaft 111, and the lower drive shaft 112 are connected as one unit by the first bolt 113.

[0058] In this embodiment, the drive system for the rotation of the rotating wheel body includes a drive motor 61, a drive gear 62 connected to the output end of the drive motor 61, and a driven gear 63 meshing with the drive gear. The driven gear is connected to the rotating wheel body through a transmission shaft and is used to drive the rotating wheel body to rotate.

[0059] In this embodiment, the rotating wheel body 11 is rotatably connected to the rotating wheel bracket 12 via a pin. After the rotating wheel bracket is adjusted to the correct position, the rotating wheel body can rotate on its own.

[0060] In this embodiment, the reset component 14 includes a slide cylinder 141, a slide rod 142, and a spring 143. One end of the slide rod 142 can slide along the inside of the slide cylinder 141, and the spring 143 is placed between the slide cylinder 141 and the slide rod 142. When the rotary wheel body is subjected to an external force, the slide rod slides along the slide cylinder, and the spring is compressed, so that the rotary wheel body adapts to different drilling tools; after the external force disappears, the reset component is reset under the action of the spring.

[0061] In this embodiment, the slide cylinder is connected to the rotating wheel bracket 12 via the first pin 144, and the slide rod is connected to the rotating wheel sliding bracket 13 via the second pin 145.

[0062] In this embodiment, the diameter of the end of the slide rod connected to the slide cylinder is smaller than the diameter of the other end, and the spring is sleeved on the end of the slide rod connected to the slide cylinder.

[0063] In this embodiment, the suspension assembly 3 includes a cantilever 31 and a connecting arm 32. The cantilever 31 is connected to the multi-stage lifting assembly 2, and the two ends of the connecting arm 32 are respectively connected to the cantilever 31 and the support frame assembly 4 via spherical bearings. The upper part of the connecting arm is flexibly connected to the cantilever via spherical bearings, and the lower part of the connecting arm is flexibly connected to the support frame assembly via spherical bearings. The connecting arm can also adopt a two-shackle structure. The two ends of the connecting arm are flexibly connected to release rotational freedom. The flexible suspension makes the rotary buckle device more adaptive.

[0064] In this embodiment, the support frame assembly 4 includes a frame body 41, a guide shaft 42, a clamping cylinder 43, and a center-of-gravity adjustment slider 44. The guide shaft 42 is connected to both sides of the frame body 41. The clamping cylinder 43 drives the rotating wheel mechanism 1 to slide along the guide shaft 42. The center-of-gravity adjustment slider 44 is slidably disposed on both sides of the frame body 41 and rotatably connected to the suspension assembly 3. The center-of-gravity adjustment slider 44 is provided with an adjustment component for locking the center-of-gravity adjustment slider 44 and the frame body 41. The clamping cylinder drives the rotating wheel mechanism to move relative to each other along the guide shaft, which can clamp drill bits of different diameters. Moreover, the center position of the rotating wheel mechanism remains unchanged during the clamping process, thus further ensuring the effectiveness of the rotary clamp. The center-of-gravity adjustment slider is rotatably connected to the suspension assembly and slidably connected to the frame body. The frame body is connected to the rotating wheel mechanism. During the sliding of the center-of-gravity adjustment slider along the frame body, the center position of the rotating wheel mechanism changes, realizing the horizontal position adjustment of the rotating wheel mechanism to adapt to the clamping center of the main clamp.

[0065] In this embodiment, two guide shafts are provided on both sides of the frame to ensure the stability of the rotating mechanism when it moves along the guide shafts.

[0066] In this embodiment, the adjustment assembly includes a bolt 411, a center of gravity adjustment screw 412, and a locking nut 413. The center of gravity adjustment slider is provided with a waist-shaped hole, and the frame is provided with a through hole. The center of gravity adjustment slider is connected to the frame by passing the bolt through the waist-shaped hole and the through hole. The other end of the center of gravity adjustment slider is connected to the frame through the center of gravity adjustment screw 412. The center of gravity adjustment screw is provided with a locking nut 413 for fixing the position of the center of gravity adjustment slider.

[0067] In this embodiment, the frame 41 has scale lines on both sides to indicate the position of the center of gravity adjustment slider 44. The scale lines on the frame allow for a clear understanding of the position of the center of gravity adjustment sliders on both sides, facilitating the adjustment of the center of gravity adjustment sliders on both sides to be in the same position, thus ensuring the center of gravity of the rotary buckle.

[0068] The working principle of this utility model is as follows: Figures 1-15 The multi-stage lifting assembly 2 includes a lifting seat assembly 21 for connection to the main tongs assembly of the iron drill, and a multi-stage telescopic cylinder 22 for connecting the lifting seat assembly 21 to the suspension assembly.

[0069] like Figure 3 As shown, the upper part of the connecting arm 32 in the suspension assembly 3 is flexibly connected to the cantilever 31 through a joint bearing, and the lower part of the connecting arm 32 is flexibly connected to the support frame assembly 4 through a joint bearing. The connecting arm 32 can also adopt a structure of two shackles connected together. The two ends of the connecting arm 32 are flexibly connected to release the rotational degree of freedom. The flexible suspension makes the rotary buckle device have better self-adaptability.

[0070] like Figure 3 , Figure 7As shown, the multi-stage lifting assembly 2 is connected to the support frame assembly 4 via the suspension assembly 3. Guide shafts 42 are respectively provided on opposite sides of the frame 41. The rotary wheel mechanism 1 includes a first rotary wheel assembly 6 and a second rotary wheel assembly 7. The first rotary wheel assembly 6 is mounted on the guide shaft on one side of the frame 41, and the second rotary wheel assembly 7 is mounted on the guide shaft on the other side of the frame 41. A clamping area for clamping the drill bit is formed between the first rotary wheel assembly 6 and the second rotary wheel assembly 7. A center-of-gravity adjustment screw 412 is provided on the frame 41. The center-of-gravity adjustment screw 412 is used to finely adjust the horizontal position of the rotary wheel mechanism 1 so that the center line of the clamping area remains vertical. One end of the center-of-gravity adjustment screw 412 is mounted on the frame 41. The other end of the center-of-gravity adjusting screw 412 is installed on the center-of-gravity adjusting slider 44 through the locking nut 413. The center-of-gravity adjusting slider 44 can slide along the groove on the frame 41 and is fixed to the frame 41 through the bolt 411. The frame 41 is connected to the suspension assembly 3 through the center-of-gravity adjusting slider 44. In the initial installation state, the position of the center-of-gravity adjusting slider 44 on the frame 41 is adjusted by adjusting the center-of-gravity adjusting screw 412, so that when the rotary valve is in a free state, the center of the four rotating wheels of the rotary valve coincides with the center of the clamp body of the main clamp of the iron drill. This can effectively ensure that when the rotary valve clamps the pipe, it will not generate additional radial force on the pipe, ensuring the success rate of the rotary valve and improving the working efficiency of the iron drill.

[0071] like Figures 3-6 As shown, the bottom cylinder of the multi-stage telescopic cylinder 22 is connected to the cylinder lug 24 via a pin 23, and the top piston rod of the multi-stage telescopic cylinder 22 is connected to the double lug 33 on the suspension assembly 3 via another pin. The multi-stage telescopic cylinder 22 is preferably a two-stage telescopic cylinder, which can reduce the initial installation height. The telescopic movement of the multi-stage telescopic cylinder 22 drives the suspension assembly 3 and the lifting seat assembly 21 to move up and down, thereby realizing the lifting and adjusting function of the rotary wheel mechanism 1 to adapt to the uncoupling requirements of special drilling tools such as centralizers.

[0072] like Figure 8 , Figure 10 As shown, the drive motor 61 of the first rotating wheel assembly 6 and the second rotating wheel assembly 7 is connected to the drive gear 62. The drive gear 62 meshes with the driven gear 63, and after deceleration and torque increase, it drives the rotating wheel body 11 to rotate, thereby realizing the rotating buckle function.

[0073] like Figure 3 , Figure 8 , Figure 9As shown, the first rotary wheel assembly 6 is slidably connected to the guide shaft 42 via the first sliding frame 64; the rotary wheel bracket 12 is hinged to the rotary wheel sliding bracket 13 via the shaft 15, and the rotary wheel sliding bracket 13 is slidably connected to the guide shaft 42. The clamping cylinder 43 is hinged at both ends to the first sliding frame 64 and the rotary wheel sliding bracket 13 respectively. Under the action of the clamping cylinder 43, the first rotary wheel assembly 6 and the second rotary wheel assembly 7 move simultaneously on the guide shafts 42 on both sides of the frame 41, and the movement trajectory is straight, with good centering. The rotary wheel bracket 12 and the rotary wheel sliding bracket 13 release the axial rotational freedom of the shaft 15 through the hinge. When the clamping cylinder 43 clamps, it is beneficial to achieve adaptive centering of the rotary wheel body 11 of the second rotary wheel assembly 7, and can improve the contact force between the rotary wheel and the drill bit, thus improving working efficiency.

[0074] like Figure 11 , Figure 13 As shown, the slide cylinder 141 is connected to the rotary wheel support 12 via a first pin 144, and the slide rod 142 is connected to the rotary wheel sliding support 13 via a second pin 145. A spring 143 is provided between the slide rod 142 and the slide cylinder 141. The outer cylindrical surface of the slide rod 142 and the inner hole of the slide cylinder 141 are fitted with a pin hole, allowing the slide rod 142 and the slide cylinder 141 to slide freely. When the rotary wheel support 12 rotates around the shaft 15, it drives the slide cylinder 141 to compress the spring 143. After the external force is eliminated, the reset member 14 enables the rotary wheel support 12 to quickly and automatically reset. At the same time, the reset member 14 can mitigate the eccentricity caused by the deviation of the drill string's outer diameter during the drill string's rotation.

[0075] like Figure 12 As shown, the rotary wheel body 11 is connected to the upper drive shaft 111 in a hexagonal detachable manner, and the rotary wheel body 11 is also connected to the lower drive shaft 112 in a hexagonal detachable manner. The rotary wheel body 11, the upper drive shaft 111, and the lower drive shaft 112 are connected as a single unit by the first bolt 113. This structural design facilitates quick replacement of the rotary wheel body 11 without removing the upper drive shaft 111, making disassembly convenient and maintenance easy. Considering the complex well site environment and the variable sludge conditions on the surface of the uncoupling tubing, to ensure sufficient clamping force and twisting torque, the rotary wheel body 11 is arranged with a nested and meshing rotary wheel surface structure. This structure can effectively handle impurities on the tubing surface and ensure uniform force distribution on the tubing, preventing localized damage to the drill string caused by prolonged twisting.

[0076] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary screwdriver for iron drills, characterized in that, It includes a rotating wheel mechanism (1), a multi-stage lifting assembly (2), a suspension assembly (3), and a support frame assembly (4). The suspension assembly (3) is rotatably connected to the support frame assembly (4), the support frame assembly (4) is connected to the rotating wheel mechanism (1), and the multi-stage lifting assembly (2) is connected to the suspension assembly (3). The multi-stage lifting assembly (2) includes a multi-stage telescopic hydraulic cylinder (22), which is connected to the suspension assembly (3) and can drive the suspension assembly (3) to move in order to adjust the distance between the rotating wheel mechanism (1) and the clamp assembly, and can shorten the installation distance between the rotating wheel mechanism (1) and the clamp assembly.

2. The iron drill auger according to claim 1, characterized in that, The multi-stage telescopic cylinder (22) is disposed between the rotary wheel mechanism (1) and the clamp assembly, and the telescopic direction of the multi-stage telescopic cylinder (22) is consistent with the clamping space center line of the clamp assembly.

3. The iron drill auger according to claim 2, characterized in that, The multi-stage lifting assembly (2) further includes a lifting seat assembly (21), which includes a first guide rail (211), a second guide rail (214), and a third guide rail (217) that slide / roll in sequence along the extension / retraction direction of the multi-stage telescopic cylinder (22). The third guide rail (217) is connected to the suspension assembly (3). One end of the multi-stage telescopic cylinder (22) is connected to the first guide rail (211), and the other end is connected to the suspension assembly (3).

4. The iron drill auger according to claim 3, characterized in that, The first guide rail (211) is provided with a first limiting screw (213) at its end, and the second guide rail (214) is provided with a second limiting screw (216) at its end.

5. A steel drill auger according to any one of claims 1-4, characterized in that, The rotating wheel mechanism (1) includes two sets of rotating wheel assemblies. The two sets of rotating wheel assemblies can move relative to or away from each other in the horizontal direction along the support frame assembly (4). The rotating wheel assembly includes a rotating wheel body (11), a rotating wheel bracket (12), and a rotating wheel sliding bracket (13). The rotating wheel body (11) is rotatably connected to the rotating wheel bracket (12). The rotating wheel bracket (12) of at least one set of rotating wheel assemblies is rotatably connected to the rotating wheel sliding bracket (13). The rotation axis of the rotating wheel bracket (12) is perpendicular to the sliding axis of the rotating wheel sliding bracket (13). A reset member (14) is rotatably connected between the rotating wheel bracket (12) and the rotating wheel sliding bracket (13).

6. A steel driller's screwdriver according to claim 5, characterized in that, The swivel body (11) is rotatably connected to the swivel bracket (12) via a pin.

7. A rotary screwdriver for iron drills according to claim 5, characterized in that, The reset component (14) includes a slide cylinder (141), a slide rod (142), and a spring (143). One end of the slide rod (142) can slide along the inside of the slide cylinder (141), and the spring (143) is placed between the slide cylinder (141) and the slide rod (142).

8. A steel drill auger according to any one of claims 1-4, characterized in that, The suspension assembly (3) includes a cantilever (31) and a connecting arm (32). The cantilever (31) is connected to the multi-stage lifting assembly (2). The two ends of the connecting arm (32) are connected to the cantilever (31) and the support frame assembly (4) respectively through joint bearings.

9. A steel drill auger according to any one of claims 1-4, characterized in that, The support frame assembly (4) includes a frame (41), a guide shaft (42), a clamping cylinder (43), and a center of gravity adjustment slider (44). The guide shaft (42) is connected to both sides of the frame (41). The clamping cylinder (43) is used to drive the rotating wheel mechanism (1) to slide along the guide shaft (42). The center of gravity adjustment slider (44) is slidably arranged with both sides of the frame (41) and rotatably connected to the suspension assembly (3). The center of gravity adjustment slider (44) is provided with an adjustment component for locking the center of gravity adjustment slider (44) and the frame (41).

10. A steel driller's screwdriver according to claim 9, characterized in that, The frame (41) has scale lines on both sides for indicating the position of the center of gravity adjustment slider (44).

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