Large-diameter tower drum flange welding deformation correcting device

Abstract

The utility model relates to the technical field of wind power generation, in particular to a large-diameter tower drum flange welding deformation correcting device which comprises a tower drum, a flange, a rolling type supporting frame and a cross-shaped telescopic frame assembly. After being unfolded, the cross-shaped telescopic frame assembly is connected with the side face of the process limiting block in an abutting mode; an axial telescopic rod assembly is connected to the center of the end of the cross telescopic frame assembly, an annular T-shaped sliding groove is formed in the outer circle of the axial telescopic rod assembly, and a plurality of radial telescopic rod assemblies extending outwards are slidably connected into the annular T-shaped sliding groove. The two sides of the radial telescopic rod assembly are connected with stop rod assemblies in abutting connection with the ends of the tower drum correspondingly, the outer ends of the radial telescopic rod assembly are connected with shaping and correcting assemblies correspondingly, and each shaping and correcting assembly comprises two symmetrically-arranged adjusting screw rods. The device is reasonable in structure, the application range is expanded, and the use effect is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a welding deformation correction device for large-diameter tower flanges. Background Technology

[0002] Wind power generation refers to converting the kinetic energy of wind into electrical energy. Wind energy is a clean and renewable energy source. The process of wind power generation involves using wind power to drive the rotation of wind turbine blades. After the speed increaser increases the rotation speed, it drives a generator to generate electricity, which is then fed into the power grid to provide electricity to society. Wind power generation requires the use of wind turbine towers, which are the supports in the wind turbine generator set and also absorb vibrations from the unit. Wind turbine towers require welded flanges, and during the welding process, straightening mechanisms are needed to straighten the flanges. Authorization announcement number CN 221185344 U discloses a tower flange welding deformation correction device. Its technical solution includes: a tower, a fixed base, and a flange. A flange is installed on one side of the tower. A positioning seat is located in the middle of the tower's interior. A moving rod is installed in the middle of one side of the positioning seat. A moving column is installed on the outer surface of the moving rod. A fixed base is installed at one end of the moving column. A bracket is installed on the outer surface of the fixed base. A positioning rod is inserted into the end of the bracket. An adjusting rod is movably installed near the end of the positioning rod. A clamp is sleeved at the end of the adjusting rod. A handle is installed at one end of the adjusting rod. This tower flange welding deformation correction device solves the problem that existing tower flange welding correction devices are too simple in structure, only able to support a single point of the flange weld, and unable to perform overall correction of the tower flange, resulting in poor correction effect. It improves the correction effect of the tower flange, thereby improving the welding quality of the tower flange.

[0003] The existing technical solutions mentioned above have the following drawbacks: Since the bracket and the fixed seat are fixedly connected, the included angle between adjacent brackets cannot be adjusted. Therefore, the adjusting rod and the clamp cannot be arbitrarily adjusted according to the actual deformation position of the flange for fixed-point correction, which reduces the scope of use and reduces the effectiveness of use. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a welding deformation correction device for large-diameter tower flanges, which expands the scope of application and enhances the effect of use.

[0005] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a large-diameter tower flange welding deformation correction device is provided, including: a tower and a flange welded to the outside of its end, four process limiting blocks are welded in an annular array on the inner wall of the tower, and a rolling support frame for supporting the tower and a cross telescopic frame assembly disposed in the tower, wherein the cross telescopic frame assembly is connected to the side of the process limiting block after being unfolded.

[0006] The center of the end of the cross telescopic frame assembly is connected to an axial telescopic rod assembly. The outer circle of the axial telescopic rod assembly is provided with an annular T-shaped groove. Several radial telescopic rod assemblies extending outward are slidably connected in the annular T-shaped groove. The two sides of the radial telescopic rod assembly are respectively connected to stop rod assemblies that abut against the end of the tower. The outer ends of the radial telescopic rod assemblies are respectively connected to shaping and correcting components for flange deformation. The shaping and correcting components include two symmetrically arranged adjusting screws. The outer ends of the adjusting screws are connected to a circular handle.

[0007] The radial telescopic rod assembly is connected to a circumferential limiting assembly.

[0008] By adopting the above technical solution, during use, four process limiting blocks are welded in a ring array to the inner wall of the tower near the end. The cross-shaped telescopic frame assembly is moved into the inner cavity of the tower, and the cross-shaped telescopic frame assembly abuts against the sides of the process limiting blocks. Based on the multiple deformation positions of the flange, and considering that the radial telescopic rod assembly and the annular T-shaped slide groove slide circumferentially, the radial telescopic rod assembly can be arbitrarily adjusted to rotate circumferentially to the corresponding deformation position of the flange. Operating the circumferential limiting assembly prevents the radial telescopic rod assembly from rotating relative to the axial telescopic rod assembly in the circumferential direction, achieving the purpose of circumferential limiting. Next, the axial... The telescopic rod assembly drives the stop rod assembly on the radial telescopic rod assembly to abut against the end of the tower. That is, the radial telescopic rod assembly, the axial telescopic rod assembly, and the cross telescopic frame assembly are relatively fixedly connected to the tower. Finally, according to the deformation direction of the flange, the corresponding adjusting screw on the rotating shaping and correction assembly moves axially. The adjusting screw applies a force in the opposite direction to the deformed position of the flange for fixed-point correction, which expands the application range and enhances the performance. The tower is rolled and supported by a rolling support frame, which makes it easy to rotate the deformed position of the flange to an appropriate height, improving the convenience of worker operation.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the shaping and correction assembly further includes a U-shaped plate and a fixed plate connected to one end thereto; after the radial telescopic rod assembly is retracted, the U-shaped plate is sleeved on the flange; the adjusting screws are spirally threaded through both sides of the U-shaped plate; the outer end of the adjusting screws is connected to the circular handle; two U-shaped reinforcing plates are spaced apart on the outer surface of the U-shaped plate; one end of the U-shaped reinforcing plate is connected to the fixed plate.

[0010] By adopting the above technical solution, manually rotating the circular handle drives the adjusting screw to rotate, and the adjusting screw contacts the deformed position of the flange and applies a force in the opposite direction. The adjusting screw corrects the deformation of the flange. The structure is simple and the operation is convenient.

[0011] In a preferred embodiment, the present invention can be further configured such that: the stop rod assembly includes a fixing block connected to the radial telescopic rod assembly, the fixing block is provided with an oblong hole, a stop bolt passes through the oblong hole, and two locking nuts are spirally connected at intervals on the stop bolt, the locking nuts are tightly fitted with the corresponding side of the fixing block.

[0012] By adopting the above technical solution, the stop bolt is fixedly connected to the fixing block by the locking nut. According to the change of flange size, the stop bolt can be adjusted to slide in the waist-shaped hole, so that the end of the stop bolt can be connected to the end of the tower.

[0013] In a preferred embodiment, the present invention can be further configured as follows: the radial telescopic rod assembly includes an outer tube and an inner tube slidably connected to its inner cavity; the end of the outer tube away from the inner tube is connected to an arc-shaped slider located in an annular T-shaped groove; a locking screw is spirally threaded through the side of the end of the outer tube away from the arc-shaped slider; a circular handle is connected to the outer end of the locking screw; and the shaping and correction assembly is connected to the outer end of the inner tube.

[0014] By adopting the above technical solution, the inner tube can slide an appropriate distance within the outer tube according to the different diameters of the tower. Adjusting the length of the radial telescopic rod assembly allows the shaping and correction assembly to correct the deformation position of the flange, thus expanding the scope of application. After the length of the radial telescopic rod assembly is determined, manually rotating the circular handle drives the locking screw to rotate. One end of the locking screw is tightly connected to the inner tube to achieve the purpose of positioning. Since the arc-shaped slider can slide within the annular T-shaped groove, it is convenient to adjust the radial telescopic rod assembly to rotate in the circumferential direction. The structure is simple and the operation is convenient.

[0015] In a preferred embodiment, the present invention can be further configured as follows: the cross telescopic frame assembly includes a square tube, the four sides of the square tube are respectively connected to limit telescopic rods, and it also includes a telescopic drive mechanism for driving the limit telescopic rods to expand and retract.

[0016] The limiting telescopic rod includes an outer tube and an inner tube that is slidably connected to its inner cavity. An arc-shaped contact plate is connected to the outer end of the inner tube, and one end of the outer tube is connected to a square tube.

[0017] The telescopic drive mechanism includes a first end plate connected to one end of a square tube, and a second end plate connected to the other end of the square tube. A rotating shaft is mounted on the first end plate. One end of the rotating shaft is fitted with a drive bevel gear, and the other end is connected to a servo motor. It also includes a support screw that passes through the inner cavity of the inner tube two on the limiting telescopic rod. One end of the support screw is threaded to a square seat, and the other end is fitted with a driven bevel gear that meshes with the drive bevel gear. The square seat is fixedly connected to the inner wall of the inner tube two. The end of the support screw near the driven bevel gear passes through the side wall of the square tube and is rotatably connected.

[0018] By adopting the above technical solution, the servo motor drives the active bevel gear on the rotating shaft to rotate, and the active bevel gear drives the support screw connected to the driven bevel gear to rotate. Since the support screw and the square seat are threadedly connected, the support screw drives the inner tube two to slide inside the outer tube two through the square seat, so that the inner tube two can be connected to the process limit block in the tower with different diameters, thus expanding the scope of application.

[0019] In a preferred embodiment, the present invention can be further configured as follows: the axial telescopic rod assembly includes an outer tube three and an inner tube three slidably connected to its inner cavity. The end of the outer tube three away from the inner tube three is connected to a circular shell. The outer circumference of the circular shell is symmetrically connected to two annular L-shaped plates. An annular T-shaped groove is provided between the two annular L-shaped plates. One end of the circular shell is connected to the end of the outer tube three, and the other end is connected to a hydraulic cylinder. The extended end of the hydraulic cylinder is connected to the cross telescopic frame assembly.

[0020] By adopting the above technical solution, the extension rod of the hydraulic cylinder extends and retracts, thereby driving the inner tube three to slide an appropriate distance on the outer tube three, which facilitates the adjustment of the length of the axial extension rod assembly, and makes the stop rod assembly on the radial extension rod assembly tightly connected to the end of the tower.

[0021] In a preferred embodiment, the present invention can be further configured such that the rolling support frame includes a base frame and four rollers, the four rollers being connected in a rectangular array to the base frame, and the rollers being in rolling connection with the outer circular surface of the tower.

[0022] By adopting the above technical solution, four rollers provide rolling support for the tower, making it easy to rotate the tower and rotate the deformed position of the flange to a height that is convenient for workers to operate the shaping and correction components, thus improving the convenience of operation.

[0023] In a preferred embodiment, the present invention can be further configured as follows: the circumferential limiting component includes an L-shaped frame and a stop screw, the L-shaped frame is connected to the radial telescopic rod assembly, the stop screw is spirally threaded on the L-shaped frame and one end is tightly connected to the axial telescopic rod assembly, and a circular handle is connected to the outer end of the stop screw.

[0024] By adopting the above technical solution, after the adjacent radial telescopic rod assemblies are adjusted to the included angle according to the deformation position of the flange, the circular handle is manually rotated to drive the stop screw to rotate. The stop screw drives the radial telescopic rod assembly to tilt to the side, so that the radial telescopic rod assembly and the axial telescopic rod assembly are tightly connected, achieving the purpose of circumferential limiting.

[0025] In summary, this utility model has at least one of the following beneficial technical effects:

[0026] 1. Based on the multiple deformation positions of the flange, and the radial telescopic rod assembly and the annular T-shaped slide groove slide circumferentially, the radial telescopic rod assembly can be arbitrarily adjusted to rotate circumferentially to the corresponding deformation position of the flange. According to the deformation direction of the flange, the corresponding adjusting screw on the rotating shaping and correction assembly moves axially. The adjusting screw applies a force in the opposite direction to the deformation position of the flange for fixed-point correction, which expands the application range and enhances the application effect.

[0027] 2. Four rollers provide rolling support for the tower, facilitating the rotation of the tower and allowing the deformed flange to be rotated to a height convenient for workers to operate the shaping and correction components, thus improving operational convenience. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0029] Figure 1 This is a schematic diagram of a preferred embodiment of a welding deformation correction device for large-diameter tower flanges according to this utility model.

[0030] Figure 2 yes Figure 1 Sectional view along line AA.

[0031] Figure 3 yes Figure 1 A schematic diagram of the structure of the central cross telescopic frame assembly.

[0032] Figure 4 yes Figure 1 A schematic diagram of the central axial telescopic rod assembly.

[0033] In the diagram: 1. Tower; 2. Flange; 30. Rolling support frame; 40. Cross telescopic frame assembly; 50. Axial telescopic rod assembly; 60. Radial telescopic rod assembly; 70. Stop rod assembly; 80. Shaping and correction assembly; 90. Circumferential limiting assembly; 11. Process limiting block; 12. Annular T-shaped slide groove;

[0034] 31. Base frame; 32. Rollers;

[0035] 41. Square tube body; 42. Limiting telescopic rod; 43. Telescopic drive mechanism;

[0036] 421. Outer tube two; 422. Inner tube two; 423. Arc-shaped contact plate;

[0037] 431. First end plate; 432. Second end plate; 433. Rotating shaft; 434. Driving bevel gear; 435. Servo motor; 436. Support shaft; 437. Square seat; 438. Driven bevel gear;

[0038] 51. Outer tube three; 52. Inner tube three; 53. Circular shell; 54. Annular L-shaped plate; 55. Hydraulic cylinder;

[0039] 61. Outer tube one; 62. Inner tube one; 63. Arc-shaped slider; 64. Locking screw; 65. Circular handle two;

[0040] 71. Fixing block; 72. Oblong hole; 73. Stop bolt; 74. Locking nut;

[0041] 81. Adjusting screw; 82. Circular handle 1; 83. U-shaped plate; 84. Fixing plate; 85. U-shaped reinforcing plate;

[0042] 91. L-shaped frame; 92. Stop screw; 93. Three round handles. Detailed Implementation

[0043] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0044] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0045] Reference Figures 1-4 This utility model discloses a large-diameter tower flange welding deformation correction device, comprising: a tower 1 and a flange 2 welded to the outside of its end. The inner wall of the tower 1 is welded with four process limiting blocks 11 in an annular array. It also includes a rolling support frame 30 for supporting the tower 1 and a cross telescopic frame assembly 40 disposed inside the tower 1. After the cross telescopic frame assembly 40 is unfolded, it abuts against the side of the process limiting blocks 11. The cross telescopic frame assembly 40 includes a square tube 41, and the four sides of the square tube 41 are respectively connected to limiting telescopic rods 42. It also includes a telescopic drive mechanism 43 for driving the limiting telescopic rods 42 to unfold and retract.

[0046] The limiting telescopic rod 42 includes an outer tube 421 and an inner tube 422 slidably connected to its inner cavity. An arc-shaped contact plate 423 is connected to the outer end of the inner tube 422, and the arc-shaped contact plate 423 contacts the inner wall of the tower 1. One end of the outer tube 421 is connected to a square tube 41. The telescopic drive mechanism 43 includes a first end plate 431 connected to one end of the square tube 41, and a second end plate 432 connected to the other end of the square tube 41. A rotating shaft 433 passes through the first end plate 431. One end of the rotating shaft 433 is fitted with a drive bevel gear 434, and the other end is connected to a servo motor 435. It also includes support screws 436 that pass through the inner cavity of the inner tube 422 on the limiting telescopic rod 42. One end of the support screw 436 is threadedly connected to a square seat 4. 37. The other end is fitted with a driven bevel gear 438 that meshes with the active bevel gear 434. The square seat 437 is fixedly connected to the inner wall of the inner tube 422. The end of the support screw 436 near the driven bevel gear 438 passes through the side wall of the square tube 41 and is rotatably connected. The servo motor 435 drives the active bevel gear 434 on the rotating shaft 433 to rotate. The active bevel gear 434 drives the support screw 436 connected to the driven bevel gear 438 to rotate. Since the support screw 436 and the square seat 437 are threadedly connected, the support screw 436 drives the inner tube 422 to slide inside the outer tube 421 through the square seat 437. This allows the inner tube 422 to abut against the process limit block 11 inside the tower 1 with different diameters, thus expanding the range of applications.

[0047] The center of the end of the cross telescopic frame assembly 40 is connected to an axial telescopic rod assembly 50. The outer circle of the axial telescopic rod assembly 50 is provided with an annular T-shaped groove 12. Several outwardly extending radial telescopic rod assemblies 60 are slidably connected in the annular T-shaped groove 12. The two sides of the radial telescopic rod assembly 60 are respectively connected to a stop rod assembly 70 that abuts against the end of the tower 1.

[0048] The axial telescopic rod assembly 50 includes an outer tube 51 and an inner tube 52 slidably connected to its inner cavity. A circular shell 53 is connected to the end of the outer tube 51 away from the inner tube 52. Two annular L-shaped plates 54 are symmetrically connected to the outer circumference of the circular shell 53. An annular T-shaped groove 12 is provided between the two annular L-shaped plates 54. One end of the circular shell 53 is connected to the end of the outer tube 51, and the other end is connected to a hydraulic cylinder 55. The extended end of the hydraulic cylinder 55 is connected to the cross telescopic frame assembly 40. The telescopic rod of the hydraulic cylinder 55 extends and retracts, thereby driving the inner tube 52 to slide an appropriate distance on the outer tube 51, which facilitates the adjustment of the length of the axial telescopic rod assembly 50, so that the stop rod assembly 70 on the radial telescopic rod assembly 60 is tightly connected to the end of the tower 1.

[0049] The outer ends of the radial telescopic rod assembly 60 are respectively connected to the shaping and correction assembly 80 for the deformation of the flange 2. The shaping and correction assembly 80 includes two symmetrically arranged adjusting screws 81, and the outer ends of the adjusting screws 81 are connected to a circular handle 82. The shaping and correction assembly 80 also includes a U-shaped plate 83 and a fixed plate 84 connected to one end thereto. After the radial telescopic rod assembly 60 is retracted, the U-shaped plate 83 is fitted onto the flange 2. The adjusting screws 81 are spirally threaded through both sides of the U-shaped plate 83. The outer ends of the adjusting screws 81 are connected to the circular handle 82. Two U-shaped reinforcing plates 85 are spaced apart on the outer surface of the U-shaped plate 83. One end of the U-shaped reinforcing plate 85 is connected to the fixed plate 84. Manually rotating the circular handle 82 drives the adjusting screws 81 to rotate. The adjusting screws 81 contact the deformed position of the flange 2 and apply a force in the opposite direction. The adjusting screws 81 correct the deformation of the flange 2. The structure is simple and the operation is convenient.

[0050] A circumferential limiting component 90 is connected to the radial telescopic rod assembly 60. The circumferential limiting component 90 includes an L-shaped frame 91 and a stop screw 92. The L-shaped frame 91 is connected to the radial telescopic rod assembly 60. The stop screw 92 is spirally inserted into the L-shaped frame 91 and one end is tightly connected to the axial telescopic rod assembly 50. A circular handle 93 is connected to the outer end of the stop screw 92. After the adjacent radial telescopic rod assemblies 60 are adjusted to the included angle according to the deformation position of the flange 2, the circular handle 93 is manually rotated to drive the stop screw 92 to rotate. The stop screw 92 drives the radial telescopic rod assembly 60 to tilt to the side, so that the radial telescopic rod assembly 60 is tightly connected to the axial telescopic rod assembly 50, thereby achieving the purpose of circumferential limiting.

[0051] The stop rod assembly 70 includes a fixing block 71 connected to the radial telescopic rod assembly 60. The fixing block 71 has an oblong hole 72, and a stop bolt 73 passes through the oblong hole 72. Two locking nuts 74 are spirally connected to the stop bolt 73 at intervals. The locking nuts 74 are tightly fitted to the corresponding side of the fixing block 71. The stop bolt 73 is fixedly connected to the fixing block 71 through the locking nuts 74. According to the size change of the flange 2, the stop bolt 73 can be adjusted to slide in the oblong hole 72, so that the end of the stop bolt 73 can be connected to the end of the tower 1.

[0052] The radial telescopic rod assembly 60 includes an outer tube 61 and an inner tube 62 slidably connected to its inner cavity. An arc-shaped slider 63 located within an annular T-shaped groove 12 is connected to the end of the outer tube 61 away from the inner tube 62. A locking screw 64 is spirally threaded through the side of the end of the outer tube 61 away from the arc-shaped slider 63. A circular handle 65 is connected to the outer end of the locking screw 64. The shaping and correction assembly 80 is connected to the outer end of the inner tube 62. Depending on the different diameters of the tower 1, the inner tube 62 can slide an appropriate distance within the outer tube 61. The length of the radial telescopic rod assembly 60 is adjusted so that the shaping and correction assembly 80 can correct the deformed position of the flange 2, thus expanding its application range. After the length of the radial telescopic rod assembly 60 is determined, the circular handle 65 is manually rotated to drive the locking screw 64 to rotate. One end of the locking screw 64 is tightly connected to the inner tube 62 to achieve the purpose of positioning. Since the arc-shaped slider 63 can slide in the annular T-shaped groove 12, it is easy to adjust the radial telescopic rod assembly 60 to rotate in the circumferential direction. The structure is simple and the operation is convenient.

[0053] The rolling support frame 30 includes a base frame 31 and four rollers 32. The four rollers 32 are connected in a rectangular array to the base frame 31. The rollers 32 are in rolling contact with the outer circular surface of the tower 1. The four rollers 32 provide rolling support for the tower 1, which facilitates the rotation of the tower 1 and allows the deformed position of the flange 2 to be rotated to a height that is convenient for workers to operate the shaping and correction assembly 80, thereby improving the convenience of operation.

[0054] The implementation principle of this embodiment is as follows: In use, four process limiting blocks 11 are welded in a ring array to the inner wall of the tower 1 near the end. The cross telescopic frame assembly 40 is moved into the inner cavity of the tower 1. The cross telescopic frame assembly 40 is connected to the side of the process limiting blocks 11. According to the multiple deformation positions of the flange 2, and the radial telescopic rod assembly 60 and the annular T-shaped slide groove 12 slide circumferentially, the radial telescopic rod assembly 60 is arbitrarily adjusted to rotate circumferentially to the corresponding deformation position of the flange 2. The circumferential limiting assembly 90 is operated to prevent the radial telescopic rod assembly 60 from rotating relative to the axial telescopic rod assembly 50 in the circumferential direction, thereby achieving the purpose of circumferential limiting. Next, the axial extension is operated... The retraction rod assembly 50 drives the stop rod assembly 70 on the radial telescopic rod assembly 60 to abut against the end of the tower 1. That is, the radial telescopic rod assembly 60, the axial telescopic rod assembly 50, and the cross telescopic frame assembly 40 are relatively fixedly connected to the tower 1. Finally, according to the deformation direction of the flange 2, the corresponding adjusting screw 81 on the rotating shaping and correction assembly 80 moves axially. The adjusting screw 81 applies a force in the opposite direction to the deformed position of the flange 2 for fixed-point correction, which expands the scope of use and enhances the effect of use. The tower 1 is rolled and supported by the rolling support frame 30, which makes it easy to rotate the deformed position of the flange 2 to an appropriate height and improves the convenience of worker operation.

[0055] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A welding deformation correction device for large-diameter tower flanges, comprising: The tower (1) and flange (2) welded to the outside of its ends, wherein four process limiting blocks (11) are welded in an annular array on the inner wall of the tower (1), characterized in that it also includes a rolling support frame (30) for supporting the tower (1) and a cross telescopic frame assembly (40) disposed inside the tower (1), wherein the cross telescopic frame assembly (40) is connected to the side of the process limiting block (11) after being unfolded; The center of the end of the cross telescopic frame assembly (40) is connected to an axial telescopic rod assembly (50). The outer circle of the axial telescopic rod assembly (50) is provided with an annular T-shaped groove (12). Several outwardly extending radial telescopic rod assemblies (60) are slidably connected in the annular T-shaped groove (12). The two sides of the radial telescopic rod assembly (60) are respectively connected to a stop rod assembly (70) that abuts against the end of the tower (1). The outer ends of the radial telescopic rod assembly (60) are respectively connected to a shaping and correction assembly (80) for the deformation of the flange (2). The shaping and correction assembly (80) includes two symmetrically arranged adjusting screws (81). The outer ends of the adjusting screws (81) are connected to a circular handle (82). The radial telescopic rod assembly (60) is connected to a circumferential limiting assembly (90).

2. The large-diameter tower flange welding deformation correction device according to claim 1, characterized in that, The shaping and correction assembly (80) also includes a U-shaped plate (83) and a fixed plate (84) connected to one end thereto. After the radial telescopic rod assembly (60) is retracted, the U-shaped plate (83) is sleeved on the flange (2). The adjusting screws (81) are spirally threaded through both sides of the U-shaped plate (83). The outer end of the adjusting screws (81) is connected to the circular handle (82). Two U-shaped reinforcing plates (85) are spaced apart on the outer surface of the U-shaped plate (83). One end of the U-shaped reinforcing plate (85) is connected to the fixed plate (84).

3. The large-diameter tower flange welding deformation correction device according to claim 1, characterized in that, The stop rod assembly (70) includes a fixing block (71) connected to the radial telescopic rod assembly (60). The fixing block (71) has a waist-shaped hole (72), and a stop bolt (73) passes through the waist-shaped hole (72). Two locking nuts (74) are spirally connected at intervals on the stop bolt (73). The locking nuts (74) are tightly fitted to the corresponding side of the fixing block (71).

4. The large-diameter tower flange welding deformation correction device according to claim 1, characterized in that, The radial telescopic rod assembly (60) includes an outer tube (61) and an inner tube (62) slidably connected to its inner cavity. The outer tube (61) is connected to an arc-shaped slider (63) located in an annular T-shaped groove (12) at one end away from the inner tube (62). A locking screw (64) is spirally threaded through the side of the outer tube (61) away from the arc-shaped slider (63). The outer end of the locking screw (64) is connected to a circular handle (65). The outer end of the inner tube (62) is connected to the shaping and correction assembly (80).

5. The large-diameter tower flange welding deformation correction device according to claim 1, characterized in that, The cross telescopic frame assembly (40) includes a square tube (41), with limiting telescopic rods (42) connected to the four sides of the square tube (41) respectively, and also includes a telescopic drive mechanism (43) for driving the limiting telescopic rods (42) to expand and contract. The limiting telescopic rod (42) includes an outer tube (421) and an inner tube (422) slidably connected to its inner cavity. The outer end of the inner tube (422) is connected to an arc-shaped contact plate (423), and one end of the outer tube (421) is connected to a square tube (41). The telescopic drive mechanism (43) includes a first end plate (431) connected to one end of a square tube (41), and a second end plate (432) connected to the other end of the square tube (41). A rotating shaft (433) is provided on the first end plate (431). One end of the rotating shaft (433) is fitted with an active bevel gear (434), and the other end is connected with a servo motor (435). It also includes a support screw (436) that is respectively installed in the inner cavity of the inner tube (422) of the limiting telescopic rod (42). One end of the support screw (436) is threadedly connected to a square seat (437), and the other end is fitted with a driven bevel gear (438) that meshes with the active bevel gear (434). The square seat (437) is fixedly connected to the inner wall of the inner tube (422). The end of the support screw (436) near the driven bevel gear (438) passes through the side wall of the square tube (41) and is rotatably connected.

6. The large-diameter tower flange welding deformation correction device according to claim 1, characterized in that, The axial telescopic rod assembly (50) includes an outer tube three (51) and an inner tube three (52) slidably connected to its inner cavity. The outer tube three (51) is connected to a circular shell (53) at one end away from the inner tube three (52). The outer circumference of the circular shell (53) is symmetrically connected to two annular L-shaped plates (54). An annular T-shaped groove (12) is provided between the two annular L-shaped plates (54). One end of the circular shell (53) is connected to the end of the outer tube three (51), and the other end is connected to a hydraulic cylinder (55). The extended end of the hydraulic cylinder (55) is connected to the cross telescopic frame assembly (40).

7. The large-diameter tower flange welding deformation correction device according to claim 1, characterized in that, The rolling support frame (30) includes a base frame (31) and four rollers (32). The four rollers (32) are connected in a rectangular array to the base frame (31), and the rollers (32) are in rolling connection with the outer circular surface of the tower (1).

8. The large-diameter tower flange welding deformation correction device according to claim 1, characterized in that, The circumferential limiting component (90) includes an L-shaped frame (91) and a stop screw (92). The L-shaped frame (91) is connected to the radial telescopic rod assembly (60). The stop screw (92) is spirally threaded on the L-shaped frame (91) and one end is tightly connected to the axial telescopic rod assembly (50). The outer end of the stop screw (92) is connected to a circular handle (93).

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