A long-size petroleum drill rod turning device

Abstract

The application is suitable for the technical field of turning processing equipment, and provides a long-specification petroleum drill rod turning processing device for turning processing on a long-specification petroleum drill rod body, which comprises a turning processing device body, an auxiliary supporting mechanism and a moving adjusting mechanism, the turning processing device body is used for clamping and driving the long-specification petroleum drill rod body to rotate around its own axis to cooperate with a turning tool to implement turning processing, the auxiliary supporting mechanism can be moved to the corresponding supporting area along the axial direction of the long-specification petroleum drill rod, and the overall supporting height is adjusted through the first electric push rod and the second electric push rod, so that the auxiliary supporting position can be changed according to the petroleum drill rods with different lengths and different turning processing areas.

Description

Technical Field

[0001] This invention relates to the field of turning equipment technology, and in particular to a turning device for long oil drill pipes. Background Technology

[0002] Oil drill pipes typically have a long length and a large length-to-diameter ratio. During production, the outer diameter, ends, or corresponding areas to be machined of the drill pipe need to be turned according to connection, assembly, and surface finishing requirements. During turning, the drill pipe is generally positioned using the clamping structure of the turning equipment, and the drill pipe is driven to rotate around its central axis. Simultaneously, the turning tool feeds relative to the drill pipe to complete the cutting of the corresponding surfaces.

[0003] For ordinary short-shaft workpieces, their inherent rigidity is sufficient for conventional turning requirements, and a relatively stable machining state can be obtained by clamping them at both ends or one end of the machine tool. However, for long oil drill pipes, due to the large axial span of the workpiece, the middle of the drill pipe is prone to a certain degree of deflection, radial runout, or vibration under the combined influence of its own weight, clamping position, centrifugal force, and cutting force of the turning tool. These phenomena become more pronounced when the drill pipe rotation speed increases or the turning position gradually moves away from the main clamping position, easily causing changes in the relative position between the workpiece and the turning tool, thereby affecting the turning accuracy of the outer diameter and the surface quality of the machined surface.

[0004] Some existing long rod turning equipment adds a fixed bracket or rollers under the rod for auxiliary support. However, the axial position, height, and distance between the two support rollers of the fixed bracket are usually limited in their adjustment range. When machining oil drill pipes of different lengths or outer diameters, the support components need to be disassembled and reassembled, which is cumbersome. At the same time, the position adjustment of ordinary support rollers can usually only complete the overall lifting or lateral movement, making it difficult to further fine-tune the actual rotation center of the drill pipe. This can easily lead to a mismatch between the two rolling support positions and the center position of the drill pipe. Summary of the Invention

[0005] This invention aims to solve the problems of existing long-specification oil drill pipes being prone to deflection and radial vibration during rotary turning due to their large axial span, and the limited adjustment range of traditional auxiliary support structures. It provides a long-specification oil drill pipe turning device that can adjust the axial support position, support height, support spacing, and rolling support position according to the length and outer diameter of the oil drill pipe.

[0006] This invention is implemented as follows: a turning device for long-specification oil drill pipes, used for turning long-specification oil drill pipe bodies, includes a turning device body, an auxiliary support mechanism, and a moving adjustment mechanism. The turning device body is used to clamp and drive the long-specification oil drill pipe body to rotate around its own axis to cooperate with the turning tool for turning. The moving adjustment mechanism is movably disposed on the turning device body along the axial direction of the long-specification oil drill pipe body. The auxiliary support mechanism is disposed on the moving adjustment mechanism and includes a driven support component and an active adjustment component. The active adjustment component can synchronously change the distance between two sets of rolling support positions and drive the two sets of rolling support positions to generate eccentric displacement, so as to provide adjustable rolling support for the long-specification oil drill pipe body during the rotary turning process.

[0007] Preferably, the movable adjustment mechanism includes a first electric push rod, a support plate, a second electric push rod, and a sliding seat. The two sliding seats are spaced apart along the axial direction of the long-specification oil drill pipe body and are slidably connected to the turning device body. The first electric push rod and the second electric push rod are respectively disposed on the two sliding seats, and the extension and retraction ends of both are fixedly connected to the support plate.

[0008] Preferably, the active adjustment component and the driven support component are respectively disposed on two support plates. The active adjustment component includes a support, a limiting support is fixedly connected to the middle of the support, and a first lead screw is rotatably connected to the middle of the limiting support.

[0009] Preferably, the two ends of the first lead screw are respectively provided with threaded sections with opposite directions of rotation, and each of the two threaded sections is threadedly connected to a movable seat. Both movable seats are slidably connected to the support so as to move synchronously towards or away from each other when the first lead screw rotates.

[0010] Preferably, a gear is rotatably connected to the middle of each of the two movable seats, a rack is meshed with the bottom of the gear, the rack is slidably connected to the movable seat, and a second lead screw is rotatably connected to the middle of the movable seat, the second lead screw being threadedly connected to the rack.

[0011] Preferably, the gear is fixedly connected with a reinforcing rib, the reinforcing rib is arranged along the length of the support rod and offset from the central axis of the support rod, and a protective sleeve is rotatably sleeved on the outer side of the support rod.

[0012] Preferably, the second lead screw is used to drive the rack to move along the moving seat, and the rack is used to drive the gear to rotate, so that the reinforcing rib causes the support rod to change its eccentric position relative to the rotation axis of the gear.

[0013] Preferably, the driven support assembly includes a mounting base and a turntable. The mounting base is fixedly connected to the corresponding support plate, and the turntable is rotatably connected to the inner side of the mounting base. The end of the reinforcing rib away from the gear is fixedly connected to the turntable.

[0014] Preferably, the auxiliary support mechanism includes two sets of spaced-apart support rods, with the protective sleeves on the outer sides of the two sets of support rods located on both sides below the long-specification oil drill pipe body, and together forming a rolling support area for supporting the long-specification oil drill pipe body.

[0015] Preferably, the first lead screw is used to synchronously adjust the support spacing between the two sets of protective sleeves, the two second lead screws are used to adjust the support position of the corresponding protective sleeves, and the first electric push rod and the second electric push rod are used to adjust the support height at both ends of the auxiliary support mechanism.

[0016] Compared with related technologies, the long-specification oil drill pipe turning apparatus provided by the present invention has the following beneficial effects: 1. This invention provides an auxiliary support mechanism and a moving adjustment mechanism along the turning path of a long-specification oil drill pipe. The auxiliary support mechanism can move along the axial direction of the long-specification oil drill pipe to the corresponding support area. The overall support height is adjusted via a first and second electric push rod. This allows for changing the auxiliary support position for oil drill pipes of different lengths and different turning areas. When the drill pipe is driven by the turning device body to rotate around its own axis and is being cut by the turning tool, the protective sleeve rolls with the drill pipe surface, providing continuous support to the middle of long-specification rods and pipes. This reduces the possibility of deflection and radial vibration in large-span rotating workpieces, improving the stability during the turning process of long-specification oil drill pipes.

[0017] 2. This invention uses a first lead screw with oppositely oriented thread sections to cooperate with two moving seats. Rotating the first lead screw allows the two moving seats to move synchronously towards each other or synchronously away from each other, so that the distance between the two sets of protective sleeves can be symmetrically changed around the center of the drill pipe. This allows it to adapt to oil drill pipes with different outer diameter specifications. Compared with adjusting the two rolling support components separately, this structure can reduce repeated adjustment operations and help maintain the symmetry of the two protective sleeves relative to the center position of the drill pipe, so that the drill pipe maintains a more stable rolling support state when rotating at high speed and when the cutting tool applies cutting force.

[0018] 3. This invention forms a continuous mechanical adjustment path through a second lead screw, rack, gear, reinforcing rib, and support rod. When the second lead screw rotates, it drives the rack to move linearly along the moving seat. The rack further drives the gear to rotate. Since the reinforcing rib is set along the length of the support rod and deviates from the central axis of the support rod, the rotation of the reinforcing rib can drive the support rod to produce a corresponding eccentric position change, thereby further adjusting the actual support position of the protective sleeve. After completing the overall axial adjustment, height adjustment, and support spacing adjustment, it can also make fine adjustments to the actual rotation center of the oil drill pipe, improving the adaptability of the rolling support structure to drill pipes of different sizes and lengths.

[0019] 4. This invention directly applies the auxiliary support mechanism to the body of the turning device, and ensures that the protective sleeve maintains rolling contact with the drill pipe during the turning process of the oil drill pipe rotating around its own axis. This not only reduces the sliding friction between the fixed support structure and the rotating drill pipe, but also allows the rolling support position to be adjusted according to the drill pipe specifications and processing conditions. As a result, the entire structure is not an independent ordinary clamping device, but forms an adjustable auxiliary support system for turning long rods and long pipes of oil drill pipe, improving the applicability of the device to processing scenarios such as turning the outer diameter of long oil drill pipes. Attached Figure Description

[0020] Figure 1 This is a first-view schematic diagram of the overall structure of the present invention; Figure 2 This is a second-view schematic diagram of the overall structure of the present invention; Figure 3 This is a partial structural diagram of the movable adjustment mechanism of the present invention; Figure 4 This is a schematic diagram of the auxiliary support mechanism structure of the present invention; Figure 5 for Figure 4 A magnified view of the structure at point A in the middle; Figure 6 This is a schematic diagram of the auxiliary support mechanism of the present invention; Figure 7 This is a schematic diagram of the active adjustment component structure of the present invention; Figure 8 for Figure 7 A magnified schematic diagram of the structure at point B in the middle.

[0021] In the diagram: 1. Turning device body; 2. Long oil drill pipe body; 3. Auxiliary support mechanism; 4. Moving adjustment mechanism; 301. Protective sleeve; 302. Driven support assembly; 303. Active adjustment assembly; 304. Turntable; 305. Support rod; 306. Reinforcing rib; 307. Support; 308. Gear; 309. Rack; 310. Limiting support; 311. Second lead screw; 312. First lead screw; 313. Moving seat; 314. Mounting seat; 401. First electric push rod; 402. Support plate; 403. Second electric push rod; 404. Sliding seat. Detailed Implementation

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Example 1

[0025] A preferred embodiment of the long-specification oil drill pipe turning apparatus provided by the present invention is as follows: Figures 1 to 8 The diagram shows a turning apparatus for long oil drill pipes, comprising a turning apparatus body 1, an auxiliary support mechanism 3, and a moving adjustment mechanism 4. The long oil drill pipe body 2 is the workpiece to be turned. The auxiliary support mechanism 3 is mounted on the moving adjustment mechanism 4, which is located on the turning apparatus body 1 and can change the support position of the auxiliary support mechanism 3 along the axial direction of the long oil drill pipe body 2. The turning apparatus body 1 is used to clamp the long oil drill pipe body 2 and drive it to rotate around its own axis, allowing the turning tool to feed relative to the rotating long oil drill pipe body 2, thereby completing the turning of the outer diameter, end, or corresponding machined area of ​​the long oil drill pipe body 2.

[0026] In this embodiment, the turning apparatus body 1 serves as the basis for turning the long-specification oil drill pipe body 2. It can be a turning machine with a bed, a workpiece rotation drive structure, a workpiece clamping structure, and a turning tool feed structure. During machining, the corresponding ends of the long-specification oil drill pipe body 2 are first positioned and clamped by the turning apparatus body 1, and then the long-specification oil drill pipe body 2 is driven to rotate around its central axis along its length. Since the axial length of the long-specification oil drill pipe body 2 is relatively large, when supported only by the main clamping position of the turning apparatus body 1, the middle span area is prone to deflection or radial vibration under its own weight and the turning cutting force. Therefore, the auxiliary support mechanism 3 is used to form rolling support for the drill pipe area far from the main clamping position, so that the long-specification oil drill pipe body 2 can maintain normal rotation while improving its radial stability during the turning process.

[0027] In a further preferred embodiment of the present invention, the movable adjustment mechanism 4 includes a first electric push rod 401, a support plate 402, a second electric push rod 403, and a sliding seat 404. The two sliding seats 404 are spaced apart along the axial direction of the long-specification oil drill pipe body 2 and are slidably connected to the turning processing device body 1. The first electric push rod 401 is provided on one sliding seat 404, and the second electric push rod 403 is provided on the other sliding seat 404. The telescopic ends of the first electric push rod 401 and the second electric push rod 403 are respectively fixedly connected to the support plate 402. The two ends of the auxiliary support mechanism 3 are respectively provided on the two support plates 402.

[0028] In this embodiment, the two sliding seats 404 can be adjusted along the length of the turning device body 1, allowing the auxiliary support mechanism 3 to move to a suitable supporting position according to the actual length of the long-specification oil drill pipe body 2, the turning area, and the overhang length. After the position adjustment is completed, the sliding seats 404 can maintain their current position using the existing guide rail limiting method, locking method, or fastening method of the turning equipment, so that the auxiliary support mechanism 3 will not experience significant axial movement due to cutting vibration during the turning process. The first electric push rod 401 and the second electric push rod 403 can respectively drive the corresponding support plate 402 to rise and fall, thereby changing the height of both ends of the auxiliary support mechanism 3 relative to the turning device body 1. In normal turning conditions, by coordinating the extension and retraction of the first electric push rod 401 and the second electric push rod 403, the auxiliary support mechanism 3 can be raised or lowered as a whole to accommodate long-specification oil drill pipe bodies 2 with different diameters or different rotation center heights. When there are slight height deviations in the installation foundation or the drill pipe itself, the first electric push rod 401 and the second electric push rod 403 can be adjusted respectively to keep both ends of the auxiliary support mechanism 3 in a supporting state that matches the actual drill pipe position.

[0029] In a further preferred embodiment of the present invention, the auxiliary support mechanism 3 includes a driven support component 302 and an active adjustment component 303. The active adjustment component 303 and the driven support component 302 are respectively disposed on two support plates 402. The active adjustment component 303 includes a support 307, which is fixed to the top of the corresponding support plate 402. A limiting support 310 is fixedly connected to the middle of the support 307. A first lead screw 312 is rotatably connected to the middle of the limiting support 310. The first lead screw 312 can rotate relative to the limiting support 310 and its axial position is limited by the limiting support 310.

[0030] In this embodiment, the two ends of the first lead screw 312 are respectively formed with threaded sections of opposite direction of rotation. The two threaded sections are respectively threadedly connected to the movable seats 313, and both movable seats 313 are slidably connected to the support 307. The support 307 provides linear motion guidance for the movable seats 313, preventing the movable seats 313 from rotating synchronously with the first lead screw 312. Therefore, when a rotational force is applied to the first lead screw 312, the two threaded sections of opposite direction of rotation can drive the two movable seats 313 to move along the support 307 respectively. When the first lead screw 312 rotates in one direction, the two movable seats 313 move synchronously towards each other; when the first lead screw 312 rotates in the opposite direction, the two movable seats 313 move synchronously away from each other. This structure allows for synchronous change of the spacing between the two sets of rolling support positions, avoiding inconsistent adjustment caused by adjusting the support components on both sides separately, and enabling the two sets of rolling support positions to be adjusted in a more coordinated manner around the lower support area of ​​the long-specification oil drill pipe body 2.

[0031] In a further preferred embodiment of the present invention, a gear 308 is rotatably connected to the middle of both movable seats 313, and a rack 309 is meshed with the bottom of the gear 308. The rack 309 is slidably disposed along the movable seat 313, and a second lead screw 311 is rotatably connected to the middle of the movable seat 313. The second lead screw 311 is threadedly connected to the rack 309.

[0032] In this embodiment, the connection between the rack 309 and the second lead screw 311 forms a threaded connection that matches the second lead screw 311. This threaded connection and the rack 309 are the same moving part, eliminating the need for a separate slider. The second lead screw 311 is rotatably mounted on the movable seat 313 and axially limited. When the second lead screw 311 rotates, the threaded transmission between the second lead screw 311 and the rack 309 converts the rotational motion into linear motion of the rack 309 along the movable seat 313. As the rack 309 moves, its teeth continuously mesh with the gear 308, thereby driving the gear 308 to rotate around its own axis of rotation. Both movable seats 313 have corresponding second lead screws 311, racks 309, and gears 308. Therefore, after coarsely adjusting the synchronous spacing of the two sets of rolling support positions using the first lead screw 312, the second lead screws 311 on both sides can be operated separately to independently adjust the two sets of rolling support positions.

[0033] In a further preferred embodiment of the present invention, the gear 308 is fixedly connected to the reinforcing rib 306, the reinforcing rib 306 is arranged along the length direction of the support rod 305, the reinforcing rib 306 is eccentrically arranged relative to the central axis of the support rod 305, and the protective sleeve 301 is rotatably sleeved on the outer side of the support rod 305, and the protective sleeve 301 can rotate freely relative to the support rod 305.

[0034] In this embodiment, the reinforcing rib 306 is disposed inside the support rod 305 on the side offset from the central axis, so that the reinforcing rib 306 and the support rod 305 form an eccentric transmission relationship. When the second lead screw 311 drives the rack 309 to move, the rack 309 drives the gear 308 to rotate, and the gear 308 further drives the reinforcing rib 306 to rotate around the rotation axis of the gear 308. Since the reinforcing rib 306 and the support rod 305 are not coaxially arranged, the rotation of the reinforcing rib 306 can drive the support rod 305 to produce a corresponding eccentric position change, so that the protective sleeve 301 sleeved on the outside of the support rod 305 changes its actual support position relative to the long specification oil drill pipe body 2. This adjustment is a further fine-tuning of the position based on the support spacing adjustment completed by the first lead screw 312, and can be used to compensate for differences in different drill pipe diameters, drill pipe outer circle errors, or actual rotation center positions. The protective sleeve 301 and the support rod 305 are rotated together. When the long-specification oil drill pipe body 2 is rotated under the drive of the turning device body 1, the outer circle of the drill pipe can drive the protective sleeve 301 in contact with it to roll, thereby replacing long-term direct sliding friction with rolling friction and reducing the obstruction of the auxiliary support process on the drill pipe surface.

[0035] In a further preferred embodiment of the present invention, the driven support assembly 302 includes a mounting base 314 and a turntable 304. The mounting base 314 is fixedly connected to the top of another support plate 402, and the turntable 304 is rotatably connected to the inner side of the mounting base 314. The end of the reinforcing rib 306 away from the gear 308 is fixedly connected to the turntable 304.

[0036] In this embodiment, the active adjustment component 303 is located at one end of the reinforcing rib 306, and the driven support component 302 is located at the other end of the reinforcing rib 306. When the gear 308 in the active adjustment component 303 drives the reinforcing rib 306 to rotate, the other end of the reinforcing rib 306 can drive the turntable 304 to rotate synchronously in the mounting base 314. The mounting base 314 forms a rotational support for the reinforcing rib 306 and the distal end of the support rod 305 that cooperates with the reinforcing rib 306 through the turntable 304, avoiding significant sagging, swaying or deflection of the long support rod 305 caused by only one end being supported by the active adjustment component 303, so that the support rod 305 still has a relatively stable two-end support foundation when the eccentric position is adjusted and the protective sleeve 301 is subjected to drill pipe load.

[0037] In a further preferred embodiment of the present invention, the auxiliary support mechanism 3 is provided with two sets of spaced support rods 305, and protective sleeves 301 are rotatably sleeved on the outer sides of the two sets of support rods 305 respectively. The two protective sleeves 301 are located on the lower sides of the long oil drill pipe body 2 respectively, and together form a rolling support area for supporting the long oil drill pipe body 2.

[0038] In this embodiment, two protective sleeves 301 support the lower sides of the long-specification oil drill pipe body 2, distributing the weight of the drill pipe to two rolling contact positions. When machining long-specification oil drill pipe bodies 2 with different diameters, the first lead screw 312 drives two moving seats 313 to move synchronously towards or away from each other, coarsely adjusting the distance between the two protective sleeves 301 according to the outer diameter of the drill pipe; then, the first electric push rod 401 and the second electric push rod 403 adjust the overall height of the two protective sleeves 301, bringing the protective sleeves 301 closer to and supporting the drill pipe; finally, the two second lead screws 311 are rotated respectively, and the second lead screws 311 drive the corresponding support rods 305 to produce eccentric position changes through the rack 309, gear 308 and reinforcing rib 306, finely adjusting the actual contact position between the two protective sleeves 301 and the drill pipe. This forms a multi-level adjustment method for axial position, height, distance between the two support points, and individual eccentric position.

[0039] During the machining process, after the above adjustments are completed, the central axis of the long-specification oil drill pipe body 2 is aligned with the workpiece rotation axis set by the turning device body 1. Then, the turning device body 1 clamps the long-specification oil drill pipe body 2 and drives it to rotate. As the drill pipe rotates, the two protective sleeves 301 roll with the drill pipe surface, continuously providing auxiliary support to the middle span area of ​​the drill pipe. The turning tool feeds relative to the drill pipe according to the machining requirements, realizing the rotary turning of the long-specification oil drill pipe body 2. Because the auxiliary support mechanism 3 can share the weight of the drill pipe itself and part of the radial cutting load during the turning process, it can reduce the deflection and radial vibration of the long-specification oil drill pipe body 2 caused by its large span, thus improving the support stability during the rotary turning of long-specification rod and pipe workpieces.

[0040] Example 2

[0041] Based on Example 1, a preferred embodiment of the long-specification oil drill pipe turning apparatus provided by the present invention is as follows: Figures 3 to 4 As shown: Based on the length, outer diameter, and turning position of the long-specification oil drill pipe body 2 to be processed, the moving adjustment mechanism 4 and the auxiliary support mechanism 3 are combined and adjusted so that the auxiliary support mechanism 3 can be located at a position where the long-specification oil drill pipe body 2 has a large span or relatively weak rigidity, so as to form a rolling auxiliary support for the drill pipe that cooperates with the turning process.

[0042] In this embodiment, when the length of the long-specification oil drill pipe body 2 changes, the two sliding seats 404 are first moved axially along the turning device body 1. For shorter drill pipes, the auxiliary support mechanism 3 can be moved closer to the middle of the drill pipe; for further increases in length or larger drill pipe overhangs, the auxiliary support mechanism 3 can be moved away from the main clamping position, thereby shortening the free span between the two effective support positions of the long-specification oil drill pipe body 2. During the movement of the sliding seat 404, the first electric push rod 401, the second electric push rod 403, and the auxiliary support mechanism 3 installed between the two support plates 402 can move as a whole with the sliding seat 404, so the axial support position of the drill pipe can be changed without disassembling the auxiliary support mechanism 3.

[0043] In a further preferred embodiment of the present invention, the first electric push rod 401 and the second electric push rod 403 can be independently extended and retracted, and act on both ends of the auxiliary support mechanism 3 respectively.

[0044] In this embodiment, when there is an assembly height error between the turning device body 1 and the auxiliary support mechanism 3, or when the long-specification oil drill pipe body 2 sags slightly due to its length, weight, or other reasons, the extension lengths of the first electric push rod 401 and the second electric push rod 403 can be adjusted respectively to provide corresponding height compensation for the two support plates 402. After the height adjustment is completed, the two protective sleeves 301 can simultaneously form appropriate contact with the lower part of the long-specification oil drill pipe body 2. The support height should be such that the protective sleeves 301 can stably support the drill pipe without significantly pushing the drill pipe away from the original rotation center of the turning device body 1, thereby avoiding excessive auxiliary support force that could cause the drill pipe axis to shift.

[0045] In a further preferred embodiment of the present invention, the first lead screw 312 provides synchronous reverse drive to the two moving seats 313, and the two second lead screws 311 provide independent drive to the corresponding racks 309 and gears 308, thereby forming a support adjustment method that combines synchronous pitch adjustment and independent fine adjustment.

[0046] In this embodiment, for long-specification oil drill pipe bodies 2 with different outer diameters, coarse adjustment can be performed first using the first lead screw 312. When the drill pipe outer diameter increases, the two moving seats 313 are driven to move in opposite directions, increasing the distance between the two protective sleeves 301; when the drill pipe outer diameter decreases, the two moving seats 313 are moved towards each other, decreasing the distance between the two protective sleeves 301. Since the threads at both ends of the first lead screw 312 turn in opposite directions, a single rotation can simultaneously change the support positions on both sides, reducing the center offset caused by adjusting each side individually. After completing the coarse adjustment, the two second lead screws 311 are adjusted according to the actual contact state between the two protective sleeves 301 and the outer circle of the drill pipe, so that the two protective sleeves 301 can be compensated for eccentric positions respectively.

[0047] In a further preferred embodiment of the present invention, the reinforcing rib 306 transmits the rotational output of the active adjustment component 303 to the support rod 305, and at the same time forms a rotational support for the distal end of the reinforcing rib 306 through the driven support component 302.

[0048] In this embodiment, when the second lead screw 311 rotates and drives the rack 309 to move, the gear 308 drives the reinforcing rib 306 to rotate. The reinforcing rib 306 changes the position of the support rod 305 by utilizing its eccentric positional relationship with the support rod 305. The other end of the reinforcing rib 306 is fixed to the turntable 304. Therefore, when the reinforcing rib 306 rotates, the turntable 304 can rotate synchronously within the mounting base 314, so that both ends of the reinforcing rib 306 are supported by the active adjustment component 303 and the driven support component 302, respectively. This structure, on the one hand, enables the adjustment action generated by the active end to be transmitted to the entire support rod 305 in the length direction, and on the other hand, reduces the possibility of the support rod 305 sags at the far end when bearing the weight of the long-specification oil drill pipe body 2, so that the protective sleeve 301 maintains a relatively stable load-bearing state along the length direction.

[0049] In a further preferred embodiment of the present invention, when performing continuous turning of the outer diameter of the long-specification oil drill pipe body 2, the auxiliary support mechanism 3 can be pre-adjusted to a position that will not interfere with the turning tool and its feed path according to the feed area of ​​the turning tool.

[0050] In this embodiment, the auxiliary support area can be determined based on the location of the section to be machined before turning. When the turning tool needs to move axially along the long oil drill pipe body 2, the auxiliary support mechanism 3 is preferentially arranged outside the section to be machined and close to the position where the drill pipe is less rigid, so that it can both improve the support rigidity of the drill pipe and reserve the necessary feed space for the turning tool. For long oil drill pipe bodies 2 that need to be turned in sections, the position of the sliding seat 404 can be readjusted after stopping the machine and releasing the corresponding machining state, and then another machining section can be machined, so that the position of the auxiliary support can be adapted to different turning stages.

[0051] In summary, this invention uses the turning device body 1 to clamp, rotate, and feed the long-specification oil drill pipe body 2 around its own axis, and uses turning tools for machining. An adjustable rolling support is formed during the rotary turning of the long-specification oil drill pipe through the moving adjustment mechanism 4 and the auxiliary support mechanism 3. The sliding seat 404 is used to change the support position of the auxiliary support mechanism 3 along the drill pipe axis. The first electric push rod 401 and the second electric push rod 403 are used to adjust the support height. The first lead screw 312 with a reverse thread section is used to synchronously change the support spacing between the two sets of protective sleeves 301. The second lead screw 311 changes the support position of the two sets of support rods 305 through the rack 309, gear 308, and eccentrically set reinforcing rib 306, thus forming a support system that combines axial position adjustment, support height adjustment, synchronous spacing adjustment, and independent eccentric fine adjustment. This improves the support adaptability during the turning of long-specification oil drill pipes, long rods, and long pipes of different lengths and outer diameters, and reduces the possibility of the drill pipe deflecting and radial vibration due to large-span rotation and cutting loads.

[0052] It is worth noting that the circuits, electronic components, and modules involved in this invention are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve improvements to the software and methods.

[0053] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A turning apparatus for long-specification oil drill pipes, used for turning long-specification oil drill pipe bodies (2), characterized in that: The device includes a turning device body (1), an auxiliary support mechanism (3), and a moving adjustment mechanism (4). The turning device body (1) is used to clamp and drive the long-specification oil drill pipe body (2) to rotate around its own axis to cooperate with the turning tool for turning. The moving adjustment mechanism (4) is movably disposed on the turning device body (1) along the axial direction of the long-specification oil drill pipe body (2). The auxiliary support mechanism (3) is disposed on the moving adjustment mechanism (4). The auxiliary support mechanism (3) includes a driven support component (302) and an active adjustment component (303). The active adjustment component (303) can synchronously change the distance between the two sets of rolling support positions and drive the two sets of rolling support positions to generate eccentric displacement, so as to provide adjustable rolling support for the long-specification oil drill pipe body (2) during the rotary turning process.

2. The long-specification oil drill pipe turning device according to claim 1, characterized in that: The movable adjustment mechanism (4) includes a first electric push rod (401), a support plate (402), a second electric push rod (403), and a sliding seat (404). The two sliding seats (404) are spaced apart along the axial direction of the long specification oil drill pipe body (2) and are slidably connected to the turning processing device body (1). The first electric push rod (401) and the second electric push rod (403) are respectively disposed on the two sliding seats (404), and the extension and retraction ends of both are fixedly connected to the support plate (402).

3. The long-specification oil drill pipe turning device according to claim 2, characterized in that: The active adjustment component (303) and the driven support component (302) are respectively disposed on two support plates (402). The active adjustment component (303) includes a support (307), a limiting support (310) is fixedly connected to the middle of the support (307), and a first lead screw (312) is rotatably connected to the middle of the limiting support (310).

4. The long-specification oil drill pipe turning apparatus according to claim 3, characterized in that: The first lead screw (312) has threaded sections with opposite directions of rotation at both ends. Each of the two threaded sections is threadedly connected to a movable seat (313). Both movable seats (313) are slidably connected to the support (307) so that they can move synchronously towards or away from each other when the first lead screw (312) rotates.

5. The long-specification oil drill pipe turning apparatus according to claim 4, characterized in that: A gear (308) is rotatably connected to the middle of each of the two movable seats (313). A rack (309) is meshed with the bottom of the gear (308). The rack (309) is slidably connected to the movable seat (313). A second lead screw (311) is rotatably connected to the middle of the movable seat (313). The second lead screw (311) is threadedly connected to the rack (309).

6. The long-specification oil drill pipe turning apparatus according to claim 5, characterized in that: The gear (308) is fixedly connected to a reinforcing rib (306). The reinforcing rib (306) is arranged along the length of the support rod (305) and deviates from the central axis of the support rod (305). A protective sleeve (301) is rotatably sleeved on the outer side of the support rod (305).

7. The long-specification oil drill pipe turning apparatus according to claim 6, characterized in that: The second lead screw (311) is used to drive the rack (309) to move along the moving seat (313). The rack (309) is used to drive the gear (308) to rotate, so that the reinforcing rib (306) causes the support rod (305) to change its eccentric position relative to the rotation axis of the gear (308).

8. The long-specification oil drill pipe turning apparatus according to claim 6, characterized in that: The driven support assembly (302) includes a mounting base (314) and a turntable (304). The mounting base (314) is fixedly connected to the corresponding support plate (402), and the turntable (304) is rotatably connected to the inner side of the mounting base (314). The end of the reinforcing rib (306) away from the gear (308) is fixedly connected to the turntable (304).

9. The long-specification oil drill pipe turning apparatus according to claim 8, characterized in that: The auxiliary support mechanism (3) includes two sets of spaced support rods (305). The protective sleeves (301) on the outer sides of the two sets of support rods (305) are located on both sides below the long-specification oil drill pipe body (2) and together form a rolling support area for supporting the long-specification oil drill pipe body (2).

10. A long-specification oil drill pipe turning apparatus according to claim 9, characterized in that: The first lead screw (312) is used to synchronously adjust the support spacing between the two sets of protective sleeves (301), the two second lead screws (311) are used to adjust the support position of the corresponding protective sleeves (301), and the first electric push rod (401) and the second electric push rod (403) are used to adjust the support height at both ends of the auxiliary support mechanism (3).

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