Flange welding device for tower drum production

Abstract

The application discloses a flange welding device for tower drum production and belongs to the technical field of welding devices. The flange welding device for tower drum production comprises a tower drum body and a flange body matched with the tower drum body, first fixing rings and second fixing rings are arranged outside the contact positions of the tower drum body and the flange body respectively, rotatable arc-shaped sliding plates are arranged between the first fixing rings and the second fixing rings, ring plates are fixedly installed on the inner sides of the first fixing rings and the second fixing rings, and arc-shaped grooves matched with the ring plates are formed in the corresponding side surfaces of the arc-shaped sliding plates. Compared with traditional manual welding, the flange welding device for tower drum production not only improves the welding speed of a laser welding head on the tower drum and the flange, but also can realize automatic completion of the overlay welding, the laser welding head can keep stable welding during the working process, and therefore the quality of the weld between the tower drum and the flange is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and more specifically, to a flange welding device for tower production. Background Technology

[0002] The welding of the tower and flange is a critical step in the manufacturing of wind turbine towers, and its quality directly affects the structural strength and safety of the tower.

[0003] Chinese patent application number CN202321843866.X relates to a flange welding device for wind turbine tower production, including a base, a column fixedly connected to the top surface of the base, a support plate fixedly connected to the top surface of the column, an inclined electric push rod movably connected to the top surface of the support plate via a rotating shaft, left and right electric push rods movably connected to the telescopic ends of the inclined electric push rod via a rotating shaft, and welding guns fixedly connected to the telescopic ends of the left and right electric push rods.

[0004] By incorporating a bonding plate, retaining strip, soft bonding layer, connecting block, connecting bolt, limiting plate, connecting groove, moving plate, and pressure detection sensor, the position of the tower and flange assembly can be better defined. Furthermore, the bonding plates in contact with the tower and flange can be easily replaced, extending the device's service life and making it more user-friendly. However, in traditional processes, due to the complex weld morphology at the tower and flange connection, and the tower's large size and high rigidity, manual adjustment of the welding torch angle, position, and welding speed is required to adapt to the dynamic changes in the weld. Because of the tower's large size, overlapping welding is used during the tower and flange welding process. However, manually holding the welding head for overlapping welding not only affects the welding speed between the tower and flange but also leads to instability during the welding process, thus affecting the quality of the weld between the tower and flange. Summary of the Invention

[0005] The purpose of this invention is to provide a flange welding device for tower production, in order to solve the problems mentioned in the background art above:

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A flange welding device for tower production includes a tower body and a matching flange body. A first fixing ring and a second fixing ring are respectively provided on the outer side of the contact position between the tower body and the flange body. A rotatable arc-shaped sliding plate is provided between the first and second fixing rings. Ring plates are fixedly installed on the inner surfaces of both the first and second fixing rings. Arc-shaped grooves matching the ring plates are formed on corresponding sides of the arc-shaped sliding plate. The arc-shaped sliding plate is rotatably connected to the first and second fixing rings through the matching arc grooves and ring plates. A through-hole is formed on the arc-shaped sliding plate, and a movable... The moving ring is elastically connected to the groove by multiple first springs. The interior of the moving ring is provided with a laser welding head for reciprocating welding at the contact position between the tower body and the flange body. A ball head is fixedly installed on the top surface of the laser welding head. A matching ball groove is snapped onto the ball head. A mounting plate is fixedly installed on the arc-shaped sliding plate. A first guide rod and a second guide rod are slidably connected on the two mounting plates respectively. One end of the first guide rod and the second guide rod are fixedly connected to the ball groove. Multiple arc-shaped blocks that compress the first guide rod and the second guide rod are fixedly installed on the inner sides of the first fixed ring and the second fixed ring respectively.

[0008] By adopting the above technical solution, after the tower body and flange body are connected, the laser welding head moves to the welding position. The arc-shaped sliding plate rotates between the first and second fixed rings through the arc-shaped groove and the ring plate. The first guide rod and the second guide rod are alternately squeezed, causing the ball groove to reciprocate, which in turn causes the laser welding head to reciprocate to perform lap welding on the weld. Compared with traditional manual welding, this welding device not only improves the welding speed of the laser welding head on the tower and flange, but also enables automated lap welding. The laser welding head maintains stable welding during operation, thereby improving the quality of the weld between the tower and the flange.

[0009] Preferably, a second spring for resetting is sleeved on both the first guide rod and the second guide rod. One end of the first spring is fixedly connected to the movable ring, and the other end of the first spring is fixedly connected to the inner wall of the through groove.

[0010] By adopting the above technical solution, when the first guide rod is gradually squeezed by the arc-shaped block, the movement of the first guide rod causes the ball groove to stretch the second spring on the first guide rod. The movement of the ball groove causes the second guide rod to compress the second spring on the second guide rod. The movement of the ball groove causes the ball head to move inside it, causing the laser welding head to move within the movable ring. As the arc-shaped sliding plate moves along the butt weld of the tower body and the flange body, the first guide rod and the second guide rod are alternately squeezed, causing the ball groove to reciprocate, which in turn causes the laser welding head to reciprocate to perform overlapping welding on the weld.

[0011] Preferably, the arc-shaped blocks on the inner surfaces of the first and second fixing rings are staggered, and the multiple staggered arc-shaped blocks form a complete circle.

[0012] By adopting the above technical solution, the first guide rod and the second guide rod are alternately squeezed, causing the ball groove to reciprocate, which in turn causes the laser welding head to reciprocate to perform overlapping welding on the weld.

[0013] Preferably, a support frame for supporting the tower body is provided below the tower body. Both support frames are provided with through slots. A slide is fixedly installed inside the slot. A matching slider is slidably connected inside the slide. An installation slot for supporting the flange body is fixedly installed on the slider.

[0014] Preferably, a lead screw is rotatably connected inside the slide, the lead screw is threadedly connected to the slider, and a first motor is fixedly installed on the side of the slide, the output end of the first motor being fixedly connected to the lead screw.

[0015] Preferably, a fixing frame is fixedly installed on the first fixing ring and the second fixing ring respectively, a rotating groove is fixedly installed on the second fixing ring, a toothed ring is rotatably connected inside the rotating groove, a follower plate is fixedly installed between the toothed ring and the arc-shaped sliding plate, and a fixing ball is fixedly installed at the other end of the first guide rod and the second guide rod.

[0016] By adopting the above technical solution and setting the fixed ball, the process of the first guide rod and the second guide rod being squeezed is made more convenient.

[0017] Preferably, a gear that meshes with a gear ring is rotatably connected to the outer side of one of the fixing frames, and a second motor is fixedly installed on the inner side of one of the fixing frames, with the output end of the second motor fixedly connected to the gear.

[0018] Preferably, one of the support frames is fixedly mounted with a mounting bracket, and both mounting brackets are fixedly mounted with slide blocks. The interior of each slide block is slidably connected with a matching moving block, and each moving block is fixedly mounted with a telescopic device. The telescopic end of the telescopic device is fixedly connected to the fixed frame.

[0019] By adopting the above technical solution, according to the specifications of the tower body, the two expansion joints extend and move upward with the fixing frame, thereby causing the first fixing ring and the second fixing ring to move upward with the fixing frame. When the center position of the first fixing ring and the second fixing ring corresponds to the center position of the tower body, the expansion joints stop working, and welding preparations are made in advance for tower bodies and flange bodies of different specifications, which increases the practicality and function of the welding device.

[0020] Preferably, one of the slides has a corresponding slot, and a locking device for locking the moving block is slidably connected inside the slot.

[0021] By adopting the above technical solution, when the fixed frame moves with the first fixed ring and the second fixed ring toward the welding position of the tower body and the flange body, the fixed frame moves with the telescopic device, so that the moving block moves inside the slide. When the laser welding head moves to the welding position, the moving block is fixed by the locking device to prevent the laser welding head from moving off course during the welding process.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1) When using this flange welding device for tower production, after the tower body and flange body are joined, the laser welding head moves to the welding position. The arc-shaped sliding plate rotates between the first and second fixed rings through the arc-shaped groove and the ring plate. The first guide rod and the second guide rod are alternately squeezed, causing the ball groove to reciprocate, which in turn causes the laser welding head to reciprocate to perform lap welding on the weld. Compared with traditional manual welding, this welding device not only improves the welding speed of the laser welding head on the tower and flange, but also enables automated lap welding. The laser welding head maintains stable welding during operation, thereby improving the quality of the weld between the tower and the flange.

[0024] 2) When using the flange welding device for tower production, the tower body to be welded is placed on the support frame, and then the flange body is placed inside the mounting slot. The first motor rotates, which drives the lead screw to rotate, causing the slider to move towards the tower body inside the slide. The movement of the slider causes the flange body to dock with the tower body, which increases the docking speed of the tower body and the flange body, and further improves the welding speed of the tower and the flange.

[0025] 3) When using the flange welding device for tower production, according to the specifications of the tower body, the two expansion joints extend and move upward with the fixed frame, so that the first fixed ring and the second fixed ring follow the fixed frame upward. When the center position of the first fixed ring and the second fixed ring corresponds to the center position of the tower body, the expansion joints stop working, and welding preparations are made in advance for tower bodies and flange bodies of different specifications, which increases the practicality and function of the welding device. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the position structure of the carriage and slider of the present invention;

[0028] Figure 3This is a schematic diagram of the mounting bracket and slide block positions of the present invention;

[0029] Figure 4 This is a schematic diagram showing the positional structure of the first and second fixing rings of the present invention;

[0030] Figure 5 This is a schematic diagram showing the position and structure of the telescopic device and the fixing frame of the present invention;

[0031] Figure 6 This is a schematic diagram of the position structure of the slot and toothed ring of the present invention;

[0032] Figure 7 This is a schematic diagram of the fixing frame and the second motor position structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the positional structure of the arc-shaped sliding plate and mounting plate of the present invention;

[0034] Figure 9 This is a schematic diagram of the positional structure of the toothed ring and the follower plate of the present invention;

[0035] Figure 10 This is a schematic diagram showing the separation of the first and second fixing rings of the present invention;

[0036] Figure 11 This is a schematic diagram of the slot and movable ring position structure of the present invention.

[0037] The following are the labeling symbols in the diagram: 1. Tower body; 2. Flange body; 3. First fixing ring; 4. Second fixing ring; 5. Arc-shaped sliding plate; 6. Ring plate; 7. Arc-shaped groove; 8. Through groove; 9. Movable ring; 10. First spring; 11. Laser welding head; 12. Ball head; 13. Ball groove; 14. Mounting plate; 15. First guide rod; 16. Second guide rod; 17. Second spring; 18. Arc-shaped block; 19. Support frame; 20. Slot; 21. Slide; 22. Slider; 23. Mounting groove; 24. Lead screw; 25. First motor; 26. Fixing frame; 27. Rotary groove; 28. Gear ring; 29. ​​Follower plate; 30. Fixed ball; 31. Gear; 32. Second motor; 33. Mounting frame; 34. Slide seat; 35. Moving block; 36. Expansion joint; 37. Slot; 38. Locking device. Detailed Implementation

[0038] Example 1: Please refer to Figure 1 - Figure 11A flange welding device for tower production includes a tower body 1 and a matching flange body 2. The tower body 1 is a conventional tower body 1 in the prior art, and the flange body 2 is a conventional flange body 2 in the prior art. A first fixing ring 3 and a second fixing ring 4 are respectively provided on the outer side of the contact position between the tower body 1 and the flange body 2. A rotatable arc-shaped sliding plate 5 is provided between the first fixing ring 3 and the second fixing ring 4. A ring plate 6 is fixedly installed on the inner side of both the first fixing ring 3 and the second fixing ring 4. The corresponding side surface of the arc-shaped sliding plate 5 is provided with a ring plate 6. The arc-shaped groove 7 of the plate 6 matches the arc-shaped sliding plate 5, which is rotatably connected to the first fixed ring 3 and the second fixed ring 4 through the matching of the arc-shaped groove 7 and the ring plate 6. The upper part of the arc-shaped sliding plate 5 is provided with a through groove 8, and a movable ring 9 is provided inside the through groove 8. Multiple first springs 10 are elastically connected between the movable ring 9 and the through groove 8. The movable ring 9 is provided with a laser welding head 11 for reciprocating overlapping welding at the contact position of the tower body 1 and the flange body 2. The laser welding head 11 is a conventional laser welding head 11 in the prior art. The top surface of the laser welding head 11 is fixedly mounted. The tower body 12 is equipped with a ball head 12, the surface of which is provided with a matching ball groove 13. A mounting plate 14 is fixedly installed on the surface of the arc-shaped sliding plate 5. A first guide rod 15 and a second guide rod 16 are slidably connected to the two mounting plates 14 respectively. One end of each guide rod 15 and guide rod 16 is fixedly connected to the surface of the ball groove 13. Multiple arc-shaped blocks 18 that compress the first guide rod 15 and guide rod 16 are fixedly installed on the inner sides of the first fixing ring 3 and the second fixing ring 4 respectively. After the tower body 1 and flange body 2 are joined, the laser welding head 11 moves to the welding position. The arc-shaped sliding plate 5 rotates between the first fixed ring 3 and the second fixed ring 4 via the arc-shaped groove 7 and the ring plate 6. The first guide rod 15 and the second guide rod 16 are alternately squeezed, causing the ball groove 13 to reciprocate, which in turn causes the laser welding head 11 to reciprocate to perform lap welding on the weld. Compared with traditional manual welding, this welding device not only improves the welding speed of the laser welding head 11 on the tower and the flange, but also enables automated lap welding. The laser welding head 11 maintains stable welding during operation, thereby improving the quality of the weld between the tower and the flange.

[0039] The surfaces of the first guide rod 15 and the second guide rod 16 are each fitted with a second spring 17 for resetting. The first guide rod 15 and the second guide rod 16 are used to guide the movement of the ball groove 13. One end of the first spring 10 is fixedly connected to the surface of the movable ring 9, and the other end of the first spring 10 is fixedly connected to the inner wall of the through groove 8. When the first guide rod 15 is gradually squeezed by the arc block 18, the movement of the first guide rod 15 causes the ball groove 13 to move and stretch the second spring 17 on the surface of the first guide rod 15. The movement of the ball groove 13 causes the second guide rod 16 to move and compress the second spring 17 on the surface of the second guide rod 16. The movement of the ball groove 13 causes the ball head 12 to move inside it, causing the laser welding head 11 to move inside the movable ring 9. As the arc slide plate 5 moves along the butt weld of the tower body 1 and the flange body 2, the first guide rod 15 and the second guide rod 16 are alternately squeezed, causing the ball groove 13 to reciprocate, which in turn causes the laser welding head 11 to reciprocate to perform overlapping welding on the weld.

[0040] The arc-shaped blocks 18 on the inner sides of the first fixing ring 3 and the second fixing ring 4 are arranged in an alternating manner, and the multiple arc-shaped blocks 18 that are interlaced form a complete circle, so that the first guide rod 15 and the second guide rod 16 are alternately squeezed, causing the ball groove 13 to reciprocate, and then causing the laser welding head 11 to reciprocate to perform overlapping welding on the weld.

[0041] Below the tower body 1, there is a support frame 19 for supporting it. Both support frames 19 have through slots 20 on their surfaces. A slide 21 is fixedly installed inside the slot 20. A matching slider 22 is slidably connected inside the slide 21. An installation groove 23 for supporting the flange body 2 is fixedly installed on the top surface of the slider 22.

[0042] The slide 21 is internally rotatably connected to a lead screw 24, which is threadedly connected to the slider 22. A first motor 25 is fixedly mounted on the side surface of the slide 21, and the output end of the first motor 25 is fixedly connected to the lead screw 24. The first motor 25 is a conventional forward and reverse reversing motor in the prior art.

[0043] A fixing frame 26 is fixedly installed on the surface of the first fixing ring 3 and the second fixing ring 4 respectively. A rotating groove 27 is fixedly installed on the surface of the second fixing ring 4. A toothed ring 28 is rotatably connected inside the rotating groove 27. A follower plate 29 is fixedly installed between the toothed ring 28 and the arc-shaped sliding plate 5. A fixing ball 30 is fixedly installed at the other end of the first guide rod 15 and the second guide rod 16. The setting of the fixing ball 30 makes the process of the first guide rod 15 and the second guide rod 16 being squeezed more convenient.

[0044] One of the mounting brackets 26 has a gear 31 rotatably connected to the outer side of the bracket and meshing with the gear ring 28. A second motor 32 is fixedly mounted on the inner side of one of the mounting brackets 26. The output end of the second motor 32 is fixedly connected to the gear 31. The second motor 32 is a conventional electric motor in the prior art.

[0045] The steps of using this invention are as follows: When using this flange welding device for tower production, firstly, the tower body 1 to be welded is placed on the surface of the support frame 19 using existing hoisting equipment. Then, the flange body 2 is placed inside the mounting groove 23. The first motor 25 rotates, causing the lead screw 24 to rotate, so that the slider 22 moves towards the tower body 1 inside the slide 21. The movement of the slider 22 causes the flange body 2 to dock with the tower body 1. After the tower body 1 and flange body 2 are docked, the fixing frame 26 is manually pushed. The movement of the fixing frame 26 moves the first fixing ring 3 and the second fixing ring 4 towards the docking and welding position of the tower body 1 and flange body 2. The first fixed ring 3 and the second fixed ring 4 move, causing the arc-shaped sliding plate 5 and the laser welding head 11 to move. When the laser welding head 11 moves to the welding position, the moving block 35 is locked by the external existing wrench rotation locking device 38. Then, the second motor 32 rotates, causing the gear 31 to rotate. The gear 31 rotates, causing the gear ring 28 to rotate in the rotating groove 27. This causes the gear ring 28 to rotate, causing the follower plate 29 to rotate. The follower plate 29 rotates, causing the arc-shaped sliding plate 5 to rotate. At this time, the arc-shaped sliding plate 5 rotates between the first fixed ring 3 and the second fixed ring 4 through the arc groove 7 and the ring plate 6. The rotation of the arc-shaped sliding plate 5 causes the mounting plate 14, the first guide rod 15 and the second guide rod to rotate. 16. When the first guide rod 15 is gradually squeezed by the arc-shaped block 18, the movement of the first guide rod 15 causes the ball groove 13 to move, stretching the second spring 17 on the surface of the first guide rod 15. The movement of the ball groove 13 causes the second guide rod 16 to move, compressing the second spring 17 on the surface of the second guide rod 16. The movement of the ball groove 13 causes the ball head 12 to move inside it, causing the laser welding head 11 to move within the movable ring 9. As the arc-shaped sliding plate 5 moves along the butt weld of the tower body 1 and the flange body 2, the first guide rod 15 and the second guide rod 16 are alternately squeezed, causing the ball groove 13 to reciprocate, which in turn causes the laser welding head 11 to reciprocate to perform overlapping welding on the weld. After the tower body 1 and flange body 2 are connected, the laser welding head 11 moves to the welding position. The arc-shaped sliding plate 5 rotates between the first fixed ring 3 and the second fixed ring 4 through the arc-shaped groove 7 and the ring plate 6. The first guide rod 15 and the second guide rod 16 are alternately squeezed, causing the ball groove 13 to reciprocate, which in turn causes the laser welding head 11 to reciprocate to perform lap welding on the weld. Compared with traditional manual welding, this welding device not only improves the welding speed of the laser welding head 11 on the tower and flange, but also enables automated lap welding. The laser welding head 11 maintains stable welding during operation, thereby improving the quality of the weld between the tower and the flange.The tower body 1 to be welded is placed on the surface of the support frame 19, and then the flange body 2 is placed inside the mounting groove 23. The first motor 25 rotates, causing the lead screw 24 to rotate, which makes the slider 22 move towards the tower body 1 inside the slide 21. The movement of the slider 22 causes the flange body 2 to dock with the tower body 1, increasing the docking speed of the tower body 1 and the flange body 2, and further increasing the welding speed of the tower and the flange.

[0046] Example 2: Please refer to Figure 1 - Figure 11 The difference from embodiment 1 is that a mounting bracket 33 is fixedly installed on the surface of one of the support frames 19, and a slide block 34 is fixedly installed on the end surfaces of both mounting brackets 33. A matching moving block 35 is slidably connected inside the two slide blocks 34, and an expansion joint 36 is fixedly installed on the surface of both moving blocks 35. The expansion joint 36 is a conventional electrically controlled push rod in the prior art. The telescopic end of the expansion joint 36 is fixedly connected to the fixed frame 26. According to the specifications of the tower body 1, the two expansion joints 36 extend and move the fixed frame 26 upward, thereby causing the first fixed ring 3 and the second fixed ring 4 to move upward with the fixed frame 26. When the center position of the first fixed ring 3 and the second fixed ring 4 corresponds to the center position of the tower body 1, the expansion joint 36 stops working, allowing for advance preparation for welding of tower bodies 1 and flange bodies 2 of different specifications, thus increasing the practicality and functionality of the welding device.

[0047] One of the slide blocks 34 has a corresponding slot 37 on its surface. A locking device 38 for locking the moving block 35 is slidably connected inside the slot 37. The locking device 38 is a conventional locking device in the prior art. When the fixed frame 26 moves, it moves the first fixed ring 3 and the second fixed ring 4 toward the welding position of the tower body 1 and the flange body 2. At this time, the fixed frame 26 moves, which moves the telescopic device 36, so that the moving block 35 moves inside the slide block 34. When the laser welding head 11 moves to the welding position, the moving block 35 is fixed by the locking device 38 to prevent the laser welding head 11 from moving and deviating during the welding process.

[0048] The steps of using this invention are as follows: When using this flange welding device for tower production, the tower body 1 and flange body 2 have different specifications. Before welding the tower body 1 and flange body 2, according to the specifications of the tower body 1, two telescopic devices 36 extend and move upward with the fixing frame 26, so that the first fixing ring 3 and the second fixing ring 4 follow the fixing frame 26 to move upward. When the center position of the first fixing ring 3 and the second fixing ring 4 corresponds to the center position of the tower body 1, the telescopic device 36 stops working, thus preparing for welding of tower body 1 and flange body 2 of different specifications in advance, which increases the practicality and function of the welding device.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flange welding device for tower production, comprising a tower body (1) and a matching flange body (2), characterized in that: The tower body (1) and flange body (2) are respectively provided with a first fixing ring (3) and a second fixing ring (4) at the contact position. A rotatable arc-shaped sliding plate (5) is provided between the first fixing ring (3) and the second fixing ring (4). A ring plate (6) is fixedly installed on the inner side of the first fixing ring (3) and the second fixing ring (4). An arc-shaped groove (7) matching the ring plate (6) is opened on the corresponding side of the arc-shaped sliding plate (5). The arc-shaped sliding plate (5) is rotatably connected to the first fixing ring (3) and the second fixing ring (4) through the matching of the arc-shaped groove (7) and the ring plate (6). A through groove (8) is opened on the arc-shaped sliding plate (5). A movable ring (9) is provided inside the through groove (8). Multiple first fixing rings are elastically connected between the movable ring (9) and the through groove (8). The spring (10) has a laser welding head (11) inside the movable ring (9) for reciprocating welding of the contact position between the tower body (1) and the flange body (2). A ball head (12) is fixedly installed on the top surface of the laser welding head (11). A matching ball groove (13) is fastened on the ball head (12). An mounting plate (14) is fixedly installed on the surface of the arc-shaped sliding plate (5). A first guide rod (15) and a second guide rod (16) are slidably connected on the two mounting plates (14). One end of the first guide rod (15) and the second guide rod (16) are fixedly connected to the ball groove (13). Multiple arc-shaped blocks (18) that compress the first guide rod (15) and the second guide rod (16) are fixedly installed on the inner sides of the first fixed ring (3) and the second fixed ring (4).

2. The flange welding device for tower production according to claim 1, characterized in that: The first guide rod (15) and the second guide rod (16) are each fitted with a second spring (17) for resetting. One end of the first spring (10) is fixedly connected to the movable ring (9), and the other end of the first spring (10) is fixedly connected to the inner wall of the through groove (8).

3. The flange welding device for tower production according to claim 1, characterized in that: The arc-shaped blocks (18) on the inner sides of the first fixing ring (3) and the second fixing ring (4) are arranged in an alternating manner, and the multiple arc-shaped blocks (18) that are alternating with each other form a complete circle.

4. The flange welding device for tower production according to claim 1, characterized in that: The tower body (1) is provided with a support frame (19) for supporting it below. Both support frames (19) are provided with through slots (20). A slide (21) is fixedly installed inside the slot (20). A matching slider (22) is slidably connected inside the slide (21). An installation slot (23) for supporting the flange body (2) is fixedly installed on the slider (22).

5. The flange welding device for tower production according to claim 4, characterized in that: The slide (21) is internally rotatably connected to a lead screw (24), which is threadedly connected to the slider (22). A first motor (25) is fixedly installed on the side of the slide (21), and the output end of the first motor (25) is fixedly connected to the lead screw (24).

6. The flange welding device for tower production according to claim 5, characterized in that: A fixing frame (26) is fixedly installed on the side of the first fixing ring (3) and the second fixing ring (4). A rotating groove (27) is fixedly installed on the second fixing ring (4). A toothed ring (28) is rotatably connected inside the rotating groove (27). A follower plate (29) is fixedly installed between the toothed ring (28) and the arc-shaped sliding plate (5). A fixing ball (30) is fixedly installed at the other end of the first guide rod (15) and the second guide rod (16).

7. The flange welding device for tower production according to claim 6, characterized in that: One of the fixed frames (26) is rotatably connected to a gear (31) that meshes with a gear ring (28), and a second motor (32) is fixedly installed on the inner side of one of the fixed frames (26), with the output end of the second motor (32) fixedly connected to the gear (31).

8. The flange welding device for tower production according to claim 7, characterized in that: One of the support frames (19) is fixedly mounted with a mounting bracket (33), and both mounting brackets (33) are fixedly mounted with a slide block (34) at their ends. Both slide blocks (34) are slidably connected with matching moving blocks (35) inside. Both moving blocks (35) are fixedly mounted with telescopic devices (36), and the telescopic end of the telescopic device (36) is fixedly connected to the fixed frame (26).

9. The flange welding device for tower production according to claim 8, characterized in that: One of the slides (34) has a corresponding slot (37), and a locking device (38) for locking the moving block (35) is slidably connected inside the slot (37).

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