An adaptive clamping structure for roll forming and welding of steel pipe

Abstract

The present application relates to the field of steel pipe welding, especially to a self-adaptive clamping structure for coiled steel pipe welding forming, comprising a sliding rail, an array of mounting seats is arranged above the sliding rail, a first electric roller is rotatably connected inside each mounting seat, a first sliding table is symmetrically arranged on both sides of each mounting seat, a roller frame is slidingly connected above each first sliding table, a mounting bracket is arranged outside each mounting seat, a control box is fixedly installed above the mounting bracket by bolts, and a conveying and clamping mechanism is arranged above the sliding rail, the present application controls the welding gap of the coiled steel pipe and clamps the coiled steel pipe at different angles according to different diameters.

Description

Technical Field

[0001] This invention relates to the field of steel pipe welding, and more particularly to an adaptive clamping structure for welding and forming rolled steel pipes. Background Technology

[0002] In the oil and gas industry, with the continuous expansion of energy development, a large number of pipelines are needed to transport oil and gas resources. Early seamless steel pipes had problems such as high cost and difficulty in processing large-diameter, thick-walled pipes. Rolled steel pipes can be processed by rolling and welding steel plates, which can conveniently process large-diameter pipes of various wall thicknesses to meet the large demand for pipelines in oil and gas transportation.

[0003] In the existing technology, the production process of rolled steel pipes requires welding operations. The stability of the steel pipe side clamping during the welding process is very important, which can effectively avoid the situation where the steel pipe is subjected to uneven stress during the welding process, resulting in weld cracking.

[0004] Chinese patent discloses a steel pipe processing clamping device (application number: 2024106572436), which is used to clamp and process materials to be welded of different specifications, thereby welding materials of different specifications. The operation is simple and does not require changing the clamps, thus improving the processing efficiency of materials to be welded.

[0005] However, the above-mentioned patent can only perform clamping operations on materials to be welded of different specifications. It is difficult to rotate the direction of the materials to be welded so that the weld is upward or biased towards a position that is easy to weld. At the same time, it is also difficult to squeeze the clamped steel pipe to control the weld width and further ensure the overall welding quality.

[0006] To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0007] The purpose of this invention is to provide an adaptive clamping structure for welding and forming rolled steel pipes, in order to solve the aforementioned technical defects.

[0008] The objective of this invention can be achieved through the following technical solution: an adaptive clamping structure for welding and forming rolled steel pipes, including a slide rail, an array of mounting seats arranged above the slide rail, a first electric roller rotatably connected inside the mounting seats, first sliding tables symmetrically arranged on both sides of the mounting seats, a roller frame slidably connected above the first sliding tables, and a mounting frame on the outer side of the mounting seats.

[0009] A control box is fixedly mounted on the top of the mounting bracket by bolts. A conveying clamping mechanism is provided above the slide rail. The conveying clamping mechanism includes a second slide table. The second slide table is fixed to the mounting base by bolts. Six annular plates are arranged in an array above the second slide table. A walking clamping mechanism is symmetrically distributed on the outer side of each annular plate. The walking clamping mechanism includes a housing.

[0010] Preferably, the mounting base and the slide rail are fixed by bolts, a first hydraulic cylinder is fixed inside the first slide table by bolts, the drive shaft of the first hydraulic cylinder extends into the roller frame and is fixedly connected to the roller frame, symmetrically distributed limiting plates are fixedly provided below the roller frame, a first stepper motor is fixed inside the roller frame by bolts, a bearing seat is also fixed inside the roller frame by bolts, the drive shaft of the first stepper motor is connected to a first synchronous pulley assembly and a second synchronous pulley assembly, and symmetrically distributed steering rollers are also rotatably provided inside the roller frame.

[0011] Preferably, the control box is equipped with a processor, a width measurement module, a correction vision module, and a signal execution module.

[0012] Preferably, each of the annular plates has a sliding groove inside, and each of the annular plates has an external gear ring fixedly installed on its outer side by bolts. The second slide table also has an array of first roller frames inside, the bottom of each first roller frame is fixedly connected to the second slide table, and each of the first roller frames has a second electric roller rotatably connected inside.

[0013] Preferably, the housing has symmetrically distributed arc-shaped grooves inside, and the housing is slidably connected to the outside of the annular plate through the arc-shaped grooves. An installation groove is provided on one side of the arc-shaped groove, and the external gear ring is located inside the installation groove. A hydraulic cylinder frame is fixed to the upper end of the housing by bolts. A second hydraulic cylinder is fixed to the upper part of the hydraulic cylinder frame by bolts. A second roller frame is fixed to the end of the drive shaft of the second hydraulic cylinder. A clamping roller is rotatably connected inside the second roller frame.

[0014] Preferably, a third stepper motor is also fixedly mounted on one end of the second roller frame by bolts. The drive shaft of the third stepper motor is fixedly connected to the shaft of one end of the clamping roller. A limiting rod is also fixedly connected on the side of the second roller frame near the housing. One end of the limiting rod passes through the housing and is slidably connected to the housing.

[0015] Preferably, each of the housings is further provided with a rotatably connected double gear with a shaft, wherein the larger gear of the double gear with a shaft meshes with an external gear ring, and each housing is further provided with a rotatably connected connecting shaft, wherein one end of the connecting shaft is provided with a first spur gear fixedly connected, and the other end of the connecting shaft is provided with a second spur gear fixedly connected, wherein the first spur gear meshes with the smaller gear in one of the double gears with a shaft.

[0016] Preferably, the second spur gear meshes with the larger gear in another double gear with a shaft, and a second stepper motor is fixedly provided on the outer side of the housing away from the mounting base. The drive shaft of the second stepper motor is fixedly connected to the shaft at one end of the double gear with a shaft.

[0017] Preferably, a gantry frame is provided between the two traveling clamping mechanisms at the end away from the mounting base, and a lifting welding machine is fixed to the bottom of the gantry frame by bolts.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. This invention measures the offset angle of the rolled steel pipe by a correction sensor installed at the center below the mounting frame. The processor then sends the offset angle to the signal execution module, which in turn activates two first hydraulic cylinders. The activation of the first hydraulic cylinders drives two roller frames to lift, transferring the rolled steel pipe from the first electric roller to between the steering rollers. Subsequently, the first stepper motor is activated. The first stepper motor drives the two steering rollers to rotate at the same speed and in the same direction through the first synchronous pulley assembly and the second synchronous pulley assembly to correct the offset of the rolled steel pipe, so that the joint of the rolled steel pipe is horizontal and upward to facilitate welding.

[0020] 2. This invention controls the stroke of the second hydraulic cylinder in the traveling clamping mechanism by using the diameter of the rolled steel pipe obtained by the width measuring module and the maximum gap width at the joint. This prevents excessive pressure from the second hydraulic cylinder from deforming the pipe wall. The maximum gap width at the joint is compared with the maximum welding width of the lifting welding machine. If the maximum gap width is less than the maximum welding width of the lifting welding machine, clamping and welding proceed normally. If the maximum gap width is greater than the maximum welding width of the lifting welding machine, the maximum gap width is subtracted from the maximum welding width, and this value is divided by two to obtain the extra travel value of the second hydraulic cylinder beyond the normal clamping stroke. This reduces the maximum gap width of the rolled steel pipe. Subsequently, the rolled steel pipe is conveyed by the first electric roller to the top of the second electric roller, and then clamped by the clamping rollers in the two traveling clamping mechanisms on the outer side of the annular plate. This controls the weld gap of the rolled steel pipe and allows for multi-angle clamping for rolled steel pipes of different diameters. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings;

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the connection structure between the mounting base, roller frame, and slide rail in this invention;

[0024] Figure 3 This is a cross-sectional view of the internal structure of the roller frame in this invention;

[0025] Figure 4 This is a schematic diagram of the connection structure when the first hydraulic cylinder lifts the roller frame in this invention;

[0026] Figure 5 This is a schematic diagram showing the positional relationship between the conveying clamping mechanism and the gantry in this invention;

[0027] Figure 6 This is a schematic diagram of the connection structure between the second slide and the first roller frame in this invention;

[0028] Figure 7 This is a schematic diagram of the connection structure between the walking clamping mechanism and the external gear ring in this invention;

[0029] Figure 8 This is a schematic diagram of the overall structure of the walking clamping mechanism in this invention;

[0030] Figure 9 This is a schematic diagram of the connection structure of the second stepper motor, the double gear with shaft, and the connecting shaft in this invention.

[0031] Legend: 1. Slide rail; 11. Mounting base; 12. First electric roller; 13. First slide table; 14. Roller frame; 15. First stepper motor; 16. First synchronous pulley assembly; 17. Second synchronous pulley assembly; 18. Bearing seat; 19. Steering roller; 20. Limiting plate; 21. First hydraulic cylinder; 22. Mounting bracket; 3. Conveying and clamping mechanism; 31. Second slide table; 32. Annular plate; 33. Slide groove; 34. External gear ring; 35. First roller frame 36. Second electric roller; 4. Traveling clamping mechanism; 41. Housing; 42. Arc groove; 43. Mounting groove; 44. Hydraulic cylinder frame; 45. Second hydraulic cylinder; 46. Second stepper motor; 47. Double gear with shaft; 48. Connecting shaft; 481. First spur gear; 482. Second spur gear; 49. Second roller frame; 50. Third stepper motor; 51. Clamping roller; 52. Limiting rod; 6. Gantry frame; 61. Lifting welding machine; 7. Control box. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1 - Figure 4 As shown, this embodiment is an adaptive clamping structure for welding and forming rolled steel pipes, including a slide rail 1, and an array of mounting seats 11 arranged above the slide rail 1. The mounting seats 11 are fixed to the slide rail 1 by bolts. When it is necessary to move the mounting seats 11, the bolts can be unscrewed to move the mounting seats 11 on the slide rail 1.

[0034] The mounting base 11 is equipped with a first electric roller 12 rotatably connected to the upper part of the mounting base 11. The upper part of the first electric roller 12 is used to place the rolled steel pipe to be welded. The mounting base 11 is also equipped with symmetrically distributed first slides 13 on both sides. The first slides 13 are fixed to the slide rail 1 by bolts. The first hydraulic cylinder 21 is also fixed inside the first slides 13 by bolts.

[0035] A roller frame 14 is provided above the first slide table 13 and is slidably connected. The drive shaft of the first hydraulic cylinder 21 extends into the roller frame 14 and is fixedly connected to the roller frame 14. A symmetrically distributed limiting plate 20 is fixedly provided below the roller frame 14. The lower end of the limiting plate 20 extends into the first slide table 13 and is slidably connected to the first slide table 13. A first stepper motor 15 is fixedly provided inside the roller frame 14 by bolts. A bearing seat 18 is also fixedly provided inside the roller frame 14 by bolts.

[0036] The drive shaft of the first stepper motor 15 is connected to a first synchronous pulley assembly 16 and a second synchronous pulley assembly 17. Both the first synchronous pulley assembly 16 and the second synchronous pulley assembly 17 consist of two synchronous pulleys and a synchronous belt. One end of the synchronous pulley of the second synchronous pulley assembly 17 is fixedly connected to the drive shaft of the first stepper motor 15, and the other end of the synchronous pulley of the second synchronous pulley assembly 17 is fixedly connected to the shaft inside the bearing housing 18.

[0037] The roller frame 14 is also equipped with symmetrically distributed steering rollers 19. All steering rollers 19 are rotatably connected to the roller frame 14. The synchronous wheel at one end of the first synchronous wheel assembly 16 is fixedly connected to the shaft at one end of the steering roller 19. The synchronous wheel at the other end of one of the first synchronous wheel assemblies 16 is fixedly connected to the drive shaft of the first stepper motor 15. The synchronous wheel at the other end of the other first synchronous wheel assembly 16 is fixedly connected to the shaft in the bearing housing 18. When the first stepper motor 15 starts, the first synchronous wheel assembly 16 and the second synchronous wheel assembly 17 drive the two steering rollers 19 to rotate at the same speed and in the same direction. The mounting bracket 22 is provided on the outside of the mounting base 11. The control box 7 is fixedly mounted on the top of the mounting bracket 22 by bolts.

[0038] The control box 7 contains a processor, a width measurement module, a correction vision module, and a signal execution module.

[0039] The width measurement module collects the diameter of the rolled steel pipe and the maximum gap width at the joint through width measurement sensors installed on both sides of the mounting frame 22. The deviation correction vision module measures the deviation angle of the rolled steel pipe through a deviation correction sensor installed at the center below the mounting frame 22. The processor then sends the deviation angle to the signal execution module, which then starts the two first hydraulic cylinders 21.

[0040] The first hydraulic cylinder 21 is activated, which drives the two roller frames 14 to lift. The rolled steel pipe is transferred from the first electric roller 12 to the space between the steering rollers 19. Then the first stepper motor 15 is activated. The first stepper motor 15 drives the two steering rollers 19 to rotate at the same speed and in the same direction through the first synchronous pulley assembly 16 and the second synchronous pulley assembly 17 to correct the roll of steel pipe, so that the joint of the rolled steel pipe is horizontal and upward to facilitate welding.

[0041] Example 2: Please refer to Figure 5 - Figure 9 As shown, this embodiment is an adaptive clamping structure for welding and forming rolled steel pipes, including a slide rail 1. A conveying clamping mechanism 3 is provided above the slide rail 1. The conveying clamping mechanism 3 includes a second slide table 31, which is located above the mounting base 11 and fixed to the mounting base 11 by bolts. Six annular plates 32 are arranged in an array above the second slide table 31. Each annular plate 32 has a groove 33 inside. An external toothed ring 34 is fixedly installed on the outer side of each annular plate 32 by bolts. The second slide table 31 also has an array of first roller frames 35 inside. The bottom of each first roller frame 35 is fixedly connected to the second slide table 31. Each first roller frame 35 has a second electric roller 36 rotatably connected inside.

[0042] The outer side of the annular plate 32 is provided with symmetrically distributed walking clamping mechanisms 4. The walking clamping mechanism 4 includes a housing 41. The housing 41 has symmetrically distributed arc-shaped grooves 42 inside. The arc-shaped grooves 42 are located on the outer side of the annular plate 32. A mounting groove 43 is provided on one side of the arc-shaped grooves 42. The external gear ring 34 is located inside the mounting groove 43.

[0043] A hydraulic cylinder frame 44 is bolted to the upper end of the housing 41. A second hydraulic cylinder 45 is bolted to the top of the hydraulic cylinder frame 44. The drive shaft of the second hydraulic cylinder 45 passes through the housing 41 and the slide groove 33 and is then fixed to a second roller frame 49. A clamping roller 51 is rotatably connected inside the second roller frame 49. A third stepper motor 50 is bolted to one end of the second roller frame 49. The drive shaft of the third stepper motor 50 is fixedly connected to one end of the clamping roller 51. A limiting rod 52 is fixedly connected to the side of the second roller frame 49 near the housing 41. One end of the limiting rod 52 passes through the housing 41 and is slidably connected to the housing 41.

[0044] The housing 41 is also provided with a rotatably connected double gear 47 with a shaft. The larger gear in the double gear 47 meshes with the external gear ring 34. The housing 41 is also provided with a rotatably connected connecting shaft 48. One end of the connecting shaft 48 is provided with a fixedly connected first spur gear 481, and the other end of the connecting shaft 48 is provided with a fixedly connected second spur gear 482.

[0045] The first spur gear 481 is the same size as the smaller gear in the double gear 47 with shaft, and the second spur gear 482 is the same size as the larger gear in the double gear 47 with shaft. The first spur gear 481 meshes with the smaller gear in one of the double gears 47 with shaft, and the second spur gear 482 meshes with the larger gear in the other double gear 47 with shaft. A second stepper motor 46 is fixedly mounted on the outer side of the housing 41 at the end away from the mounting base 11 by bolts. The drive shaft of the second stepper motor 46 is fixedly connected to the shaft at one end of the double gear 47 with shaft.

[0046] A gantry frame 6 is provided between the two traveling clamping mechanisms 4 at the end away from the mounting base 11, and a lifting welding machine 61 is fixed below the gantry frame 6 by bolts.

[0047] By connecting the shaft 48, the first spur gear 481 and the second spur gear 482 to the double gear 47 with shaft in the two adjacent housings 41, the installation angles of the two adjacent housings 41 are different, so that each walking clamping mechanism 4 clamps the rolled steel pipe at different points, reducing the possibility of pipe wall deformation caused by clamping at the same point.

[0048] When it is necessary to adjust the clamping angle of the walking clamping mechanism 4, the second stepper motor 46 is started. The second stepper motor 46 drives the double gear 47 with shaft to rotate. The double gear 47 with shaft meshes with the external gear ring 34, thereby performing circumferential motion on the outside of the external gear ring 34. At the same time as the double gear 47 with shaft moves, it drives another double gear 47 with shaft to move through the first spur gear 481, the connecting shaft 48 and the second spur gear 482, thereby realizing the synchronous movement of multiple walking clamping mechanisms 4.

[0049] Furthermore, when clamping the rolled steel pipe, the diameter of the rolled steel pipe and the maximum gap width at the joint are obtained through the width measuring module. The stroke of the second hydraulic cylinder 45 in the walking clamping mechanism 4 is controlled to prevent the pressure of the second hydraulic cylinder 45 from being too high and deforming the pipe wall of the rolled steel pipe. The maximum gap width at the joint is compared with the maximum welding width of the lifting welding machine 61. If the maximum gap width is less than the maximum welding width of the lifting welding machine 61, clamping and welding are performed normally. If the maximum gap width is greater than the maximum welding width of the lifting welding machine 61, the maximum gap width is subtracted from the maximum welding width and then divided by two to obtain the extra travel value of the second hydraulic cylinder 45 outside the normal clamping stroke, thereby reducing the maximum gap width of the rolled steel pipe. Then, the lifting welding machine 61 is started to weld the rolled steel pipe.

[0050] The working process and principle of this invention are as follows:

[0051] The rolled steel pipe is placed above the first electric roller 12 inside the mounting base 11. The first electric roller 12 is started to move the rolled steel pipe towards one end closer to the lifting welding machine 61. When the rolled steel pipe moves into the interior of the mounting frame 22, the correction vision module in the control box 7 measures the offset angle of the rolled steel pipe through the correction sensor installed at the center below the mounting frame 22. Then the processor sends the offset angle to the signal execution module.

[0052] When both ends of the rolled steel pipe are located outside the two first slides 13, the signal execution module starts the two first hydraulic cylinders 21. The start of the first hydraulic cylinders 21 drives the two roller frames 14 to lift, thereby transferring the rolled steel pipe from the first electric roller 12 to between the steering rollers 19. Then the first stepper motor 15 is started. The first stepper motor 15 drives the two steering rollers 19 to rotate at the same speed and in the same direction through the first synchronous pulley assembly 16 and the second synchronous pulley assembly 17 to correct the roll of steel pipe, so that the joint of the rolled steel pipe is horizontal and upward to facilitate welding.

[0053] After the angle correction of the rolled steel pipe is completed, the first hydraulic cylinder 21 drives the roller frame 14 to descend, thereby placing the corrected rolled steel pipe above the first electric roller 12. The first electric roller 12 starts to transport the rolled steel pipe into the annular plate 32. At this time, the diameter of the rolled steel pipe and the maximum gap width at the joint obtained by the width measuring module are used to control the stroke of the second hydraulic cylinder 45 in the walking clamping mechanism 4, so as to prevent the pressure of the second hydraulic cylinder 45 from being too high and squeezing and deforming the pipe wall of the rolled steel pipe. The maximum gap width at the joint is compared with the maximum welding width of the lifting welding machine 61. If the maximum gap width is less than the maximum welding width of the lifting welding machine 61, the clamping and welding are carried out normally.

[0054] If the maximum gap width is greater than the maximum welding width of the lifting welding machine 61, the maximum gap width is subtracted from the maximum welding width, and then this value is divided by two to obtain the extra travel value of the second hydraulic cylinder 45 outside the normal clamping stroke, thereby reducing the maximum gap width of the rolled steel pipe. Subsequently, the rolled steel pipe is conveyed by the first electric roller 12 to the top of the second electric roller 36, and then the rolled steel pipe is clamped by the clamping rollers 51 in the two traveling clamping mechanisms 4 outside the annular plate 32. The rolled steel pipe is clamped and conveyed by starting the third stepper motor 50 and the second electric roller 36, and then the lifting welding machine 61 is started to weld the rolled steel pipe.

[0055] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An adaptive clamping structure for welding and forming rolled steel pipes, comprising a slide rail (1), characterized in that, The slide rail (1) is provided with an array of mounting seats (11) above it. Each mounting seat (11) is provided with a first electric roller (12) rotatably connected inside. The mounting seats (11) are also provided with symmetrically distributed first slide tables (13) on both sides. The first slide tables (13) are provided with a roller frame (14) slidably connected above them. The mounting seats (11) are provided with a mounting bracket (22) on the outside. A control box (7) is fixedly installed above the mounting bracket (22) by bolts. A conveying clamping mechanism (3) is provided above the slide rail (1). The conveying clamping mechanism (3) includes a second slide (31). The second slide (31) is fixed to the mounting base (11) by bolts. Six annular plates (32) are arranged in an array above the second slide (31). A symmetrically distributed walking clamping mechanism (4) is provided on the outer side of each annular plate (32). The walking clamping mechanism (4) includes a housing (41). The annular plate (32) is provided with a sliding groove (33) inside. The outer side of the annular plate (32) is fixedly installed with an external gear ring (34) by bolts. The second slide table (31) is also provided with an array of first roller frames (35). The bottom of the first roller frames (35) is fixedly connected to the second slide table (31). The first roller frames (35) are provided with a rotatably connected second electric roller (36) inside. The housing (41) has symmetrically distributed arc-shaped grooves (42) inside, and the housing (41) is slidably connected to the outside of the annular plate (32) through the arc-shaped grooves (42). An installation groove (43) is provided on one side of the arc-shaped grooves (42), and the external gear ring (34) is located inside the installation groove (43). A hydraulic cylinder frame (44) is fixed to the upper end of the housing (41) by bolts. A second hydraulic cylinder (45) is fixed to the upper part of the hydraulic cylinder frame (44) by bolts. A second roller frame (49) is fixed to the end of the drive shaft of the second hydraulic cylinder (45). A clamping roller (51) is rotatably connected inside the second roller frame (49). A third stepper motor (50) is fixedly mounted on one end of the second roller frame (49) by bolts. The drive shaft of the third stepper motor (50) is fixedly connected to the shaft at one end of the clamping roller (51). A limiting rod (52) is also fixedly connected on the side of the second roller frame (49) near the housing (41). One end of the limiting rod (52) passes through the housing (41) and is slidably connected to the housing (41). The housing (41) is also provided with a rotatably connected double gear (47) with a shaft. The larger gear in the double gear (47) meshes with the external gear ring (34). The housings (41) are also provided with a rotatably connected connecting shaft (48). One end of the connecting shaft (48) is provided with a fixedly connected first spur gear (481), and the other end of the connecting shaft (48) is provided with a fixedly connected second spur gear (482). The first spur gear (481) meshes with the smaller gear in one of the double gears (47) with a shaft. The second spur gear (482) meshes with the larger gear in another double gear (47) with a shaft. A second stepper motor (46) is fixedly provided on the outside of the housing (41) away from the mounting base (11). The drive shaft of the second stepper motor (46) is fixedly connected to the shaft at one end of the double gear (47). A gantry frame (6) is provided between two traveling clamping mechanisms (4) at one end away from the mounting base (11), and a lifting welding machine (61) is fixed below the gantry frame (6) by bolts.

2. The adaptive clamping structure for welding and forming rolled steel pipes according to claim 1, characterized in that, The mounting base (11) is fixed to the slide rail (1) by bolts. The first hydraulic cylinder (21) is fixed inside the first slide (13) by bolts. The drive shaft of the first hydraulic cylinder (21) extends into the roller frame (14) and is fixedly connected to the roller frame (14). The roller frame (14) is fixedly provided with symmetrically distributed limiting plates (20) below. The roller frame (14) is fixedly provided with a first stepper motor (15) by bolts inside. The roller frame (14) is also fixedly provided with a bearing seat (18) by bolts inside. The drive shaft of the first stepper motor (15) is connected to a first synchronous pulley assembly (16) and a second synchronous pulley assembly (17). The roller frame (14) is also rotatably provided with symmetrically distributed steering rollers (19).

3. The adaptive clamping structure for welding and forming rolled steel pipes according to claim 1, characterized in that, The control box (7) is equipped with a processor, a width measurement module, a correction vision module and a signal execution module.

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