Flange welding device for tower drum production

Abstract

The invention discloses a flange welding device for tower drum production, and belongs to the technical field of welding devices. A flange welding device for tower drum production comprises a tower drum body and a flange body matched with the tower drum body, a first fixing ring and a second fixing ring are arranged outside the contact position of the tower drum body and the flange body respectively, and a rotatable arc-shaped sliding plate is arranged between the first fixing ring and the second fixing ring. Annular plates are fixedly mounted on the inner side surfaces of the first fixing ring and the second fixing ring; arc-shaped grooves matched with the annular 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 has the advantages that the welding speed of a laser welding head on a tower drum and a flange is increased, stitch welding can be automatically completed, stable welding is kept in the working process of the laser welding head, and the welding efficiency is improved. And the quality of a welding seam between the tower drum and the flange is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding devices, and more particularly to a flange welding device for tower production. Background Art

[0002] The welding between the tower and the flange is a key link 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, a tilting electric push rod movably connected to the top surface of the support plate via a rotating shaft, the telescopic end of the tilting electric push rod is movably connected to the left and right electric push rods via a rotating shaft, and the telescopic ends of the left and right electric push rods are fixedly connected to a welding gun.

[0004] By setting up bonding plates, card strips, soft bonding layers, connecting blocks, connecting bolts, limit plates, connecting grooves, movable plates and pressure detection sensors, the position of the tower and flange combination can be better limited, and the bonding plates in contact with the tower and flange can be easily replaced, thereby extending the service life of the device and making it more humane. However, in traditional processes, due to the complex shape of the weld at the connection between the tower and the flange, and the large size and strong rigidity of the tower itself, the welding gun angle, position and welding speed need to be manually adjusted during welding to adapt to the dynamic changes of the weld. Due to the large size of the tower itself, during the welding process of the tower and the flange, the welding is carried out by stitch welding. However, manually holding the welding head for stitch welding not only affects the welding speed between the tower and the flange, but also manually holding the welding head will cause instability during the welding process, thereby affecting the quality of the weld between the tower and the flange. Summary of the Invention

[0005] The purpose of the present invention is to provide a flange welding device for tower production to solve the problems raised in the above background technology: In order to achieve the above object, the present invention provides the following technical solutions: A flange welding device for tower production comprises a tower body and a flange body matched therewith, wherein a first fixing ring and a second fixing ring are respectively provided on the outside of the contact position of the tower body and the flange body, a rotatable arc-shaped slide is provided between the first fixing ring and the second fixing ring, the inner side surfaces of the first fixing ring and the second fixing ring are fixedly mounted with ring plates, the corresponding sides of the arc-shaped slide are provided with arc-shaped grooves matching the ring plates, the arc-shaped slide is rotatably connected to the first fixing ring and the second fixing ring through the arc-shaped groove and the ring plate matching each other, a through-type through-groove is provided on the arc-shaped slide, and a movable through-groove is provided inside the through-groove. A movable ring, a plurality of first springs are elastically connected between the movable ring and the through groove, a laser welding head for reciprocating lap welding the contact position of the tower body and the flange body is provided inside the movable ring, a ball head is fixedly installed on the top surface of the laser welding head, a ball groove matching it is buckled on the ball head, a mounting plate is fixedly installed on the arc-shaped slide plate, and the two mounting plates are respectively slidably connected with the first guide rod and the second guide rod, one end of the first guide rod and the second guide rod are fixedly connected to the ball groove, and the inner sides of the first fixed ring and the second fixed ring are respectively fixedly installed with a plurality of arc blocks for extruding the first guide rod and the second guide rod.

[0006] By adopting the above technical solution, after the tower body and the flange body are butt-jointed, the laser welding head moves to the welding position, and the arc slide rotates between the first fixed ring and the second fixed ring through the arc groove and the ring plate. The first guide rod and the second guide rod are indirectly squeezed alternately, causing the ball groove to reciprocate, and then causing the laser welding head to reciprocate to perform stitch welding on the weld. Compared with traditional manual welding, the welding device not only improves the welding speed of the laser welding head for the tower and the flange, but also the welding device can realize automatic stitch welding. The laser welding head maintains stable welding during operation, thereby improving the quality of the weld between the tower and the flange.

[0007] Preferably, the first guide rod and the second guide rod are both sleeved with a second spring for resetting the first 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 groove.

[0008] By adopting the above technical solution, when the first guide rod is gradually squeezed by the arc block, the movement of the first guide rod brings the ball groove to stretch the second spring on the first guide rod, and the movement of the ball groove brings 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 in the movable ring. As the arc slide moves along the butt weld of the tower body and the flange body, the first guide rod and the second guide rod are indirectly squeezed alternately, causing the ball groove to reciprocate, and then causing the laser welding head to reciprocate to perform overlap welding on the weld.

[0009] Preferably, the arc-shaped blocks on the inner side surfaces of the first fixing ring and the second fixing ring are arranged in an interlaced manner, and the multiple interlaced arc-shaped blocks form a complete circle.

[0010] By adopting the above technical solution, the first guide rod and the second guide rod are indirectly and alternately squeezed, so that the ball groove moves back and forth, and then the laser welding head moves back and forth to perform overlap welding on the weld.

[0011] Preferably, a support frame for supporting the tower body is correspondingly provided below the tower body, and both support frames are provided with a through slot, a slide is fixedly installed inside the slot, and a slider matching it is slidably connected inside the slide, and a mounting groove for supporting the flange body is fixedly installed on the slider.

[0012] Preferably, the interior of the slide is rotatably connected to a screw rod, the screw rod is threadedly connected to the slider, a first motor is fixedly mounted on the side of the slide, and the output end of the first motor is fixedly connected to the screw rod.

[0013] 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 gear ring is rotatably connected inside the rotating groove, a follower plate is fixedly installed between the gear ring and the arc-shaped slide, and a fixed ball is fixedly installed on the other end of each of the first guide rod and the second guide rod.

[0014] By adopting the above technical solution and setting the fixed ball, the process of squeezing the first guide rod and the second guide rod is made more convenient.

[0015] Preferably, the outer side of one of the fixing frames is rotatably connected to a gear meshing with the gear ring, and the inner side surface of one of the fixing frames is fixedly mounted with a second motor, and the output end of the second motor is fixedly connected to the gear.

[0016] Preferably, a mounting frame is fixedly installed on one of the support frames, a slide is fixedly installed on both of the mounting frames, and the interiors of the two slides are slidably connected with matching moving blocks, and telescopes are fixedly installed on both of the moving blocks, and the telescopic ends of the telescopes are fixedly connected to the fixed frames.

[0017] By adopting the above technical solution, according to the specifications of the tower body, the two expansion joints are extended and move upward with the fixing frame, so that the first fixing ring and the second fixing ring move upward with the fixing frame. When the center positions of the first fixing ring and the second fixing ring correspond to the center positions of the tower body, the expansion joints are stopped, and welding preparations are made in advance for tower bodies and flange bodies of different specifications, thereby increasing the practicality and functionality of the welding device.

[0018] Preferably, a slot is correspondingly provided on one of the slide seats, and a locking device for locking the moving block is slidably connected inside the slot.

[0019] By adopting the above technical solution, when the fixing frame moves with the first fixing ring and the second fixing ring toward the butt welding position of the tower body and the flange body, the fixing frame moves with the telescopic device, so that the moving block moves inside the slide seat. 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 during the welding process.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1) When the flange welding device for tower production is in use, after the tower body and the flange body are butt-jointed, the laser welding head moves to the welding position, and the arc-shaped slide rotates between the first fixed ring and the second fixed ring through the arc groove and the ring plate. The first guide rod and the second guide rod are indirectly and alternately squeezed, causing the ball groove to reciprocate, thereby causing the laser welding head to reciprocate to perform stitch welding on the weld. Compared with traditional manual welding, this welding device not only improves the welding speed of the laser welding head for the tower and the flange, but also realizes automated stitch welding. The laser welding head maintains stable welding during operation, thereby improving the quality of the weld between the tower and the flange.

[0021] 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 groove. The first motor rotates and drives the lead screw to rotate, so that the slider moves toward the tower body inside the slide. The movement of the slider drives the flange body to dock with the tower body, thereby improving the docking speed of the tower body and the flange body, and further improving the welding speed of the tower and the flange.

[0022] 3) When the flange welding device for tower production is in use, 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 positions of the first fixing ring and the second fixing ring correspond to the center positions 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, thereby increasing the practicality and functionality of the welding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position structure of the carriage and the slider of the present invention; Figure 3 This is a schematic diagram of the mounting bracket and slide position structure of the present invention; Figure 4This is a schematic diagram of the position structure of the first fixing ring and the second fixing ring of the present invention; Figure 5 This is a schematic diagram of the position structure of the telescoping device and the fixing bracket of the present invention; Figure 6 This is a schematic diagram of the position structure of the rotating groove and the gear ring of the present invention; Figure 7 This is a schematic diagram of the position structure of the fixing bracket and the second motor of the present invention; Figure 8 This is a schematic diagram of the position structure of the arc-shaped slide plate and the mounting plate of the present invention; Figure 9 This is a schematic diagram of the position structure of the gear ring and the follower plate of the present invention; Figure 10 This is a schematic diagram of the separation of the first fixing ring and the second fixing ring of the present invention; Figure 11 It is a schematic diagram of the position structure of the through groove and movable ring of the present invention.

[0024] Explanation of the numbers in the figure: 1. Tower body; 2. Flange body; 3. First fixing ring; 4. Second fixing ring; 5. Arc slide; 6. Ring plate; 7. Arc 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 block; 19. Support frame; 20. Slot; 21. Slide; 22. Slider; 23. Mounting groove; 24. Screw; 25. First motor; 26. Fixed frame; 27. Rotating groove; 28. Gear ring; 29. ​​Follower plate; 30. Fixed ball; 31. Gear; 32. Second motor; 33. Mounting frame; 34. Slide; 35. Moving block; 36. Telescope; 37. Notch; 38. Locking device. DETAILED DESCRIPTION

[0025] Example 1: Please refer to Figure 1 - Figure 11A flange welding device for tower production includes a tower body 1 and a flange body 2 matched therewith. 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 outside of the contact position between the tower body 1 and the flange body 2. A rotatable arc-shaped slide 5 is provided between the first fixing ring 3 and the second fixing ring 4. The inner sides of the first fixing ring 3 and the second fixing ring 4 are both fixedly installed with a ring plate 6. The corresponding side surfaces of the arc-shaped slide 5 are both provided with a ring plate 6 that is in contact with the ring plate 6. The arc groove 7 matches the plate 6, and the arc slide 5 is matched with the first fixed ring 3 and the second fixed ring 4 through the arc groove 7 and the ring plate 6. A through-type through-groove 8 is opened on the arc slide 5, and a movable ring 9 is provided inside the through-groove 8. A plurality of first springs 10 are elastically connected between the movable ring 9 and the through-groove 8. A laser welding head 11 for reciprocating lap welding of the contact position of the tower body 1 and the flange body 2 is provided inside the movable ring 9. 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 installed A ball head 12 is installed, and a ball groove 13 is provided on the surface of the ball head 12 to match it. A mounting plate 14 is fixedly installed on the surface of the arc-shaped slide 5. The first guide rod 15 and the 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 surface of the ball groove 13. The inner side surfaces of the first fixing ring 3 and the second fixing ring 4 are respectively fixedly installed with a plurality of arc blocks 18 for extruding the first guide rod 15 and the second guide rod 16. After the tower body 1 and the flange body 2 are connected, the laser welding head 11 moves to the welding position. The arc-shaped slide 5 rotates between the first fixing ring 3 and the second fixing ring 4 through the arc groove 7 and the ring plate 6, and the first guide rod 15 and the second guide rod 16 are indirectly and alternately squeezed, so that the ball groove 13 reciprocates, and then the laser welding head 11 reciprocates to perform stitch welding on the weld. Compared with traditional manual welding, the welding device not only improves the welding speed of the laser welding head 11 on the tower and the flange, but also the welding device can realize automatic stitch welding. The laser welding head 11 maintains stable welding during operation, thereby improving the quality of the weld between the tower and the flange.

[0026] The surfaces of the first guide rod 15 and the second guide rod 16 are both sleeved with a second spring 17 for their reset. The first guide rod 15 and the second guide rod 16 are used for guiding 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 first guide rod 15 moves with the ball groove 13 to stretch the second spring 17 on the surface of the first guide rod 15. The movement of the ball groove 13 brings the second guide rod 16 to 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 in the movable ring 9. As the arc slide 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 indirectly alternately squeezed, causing the ball groove 13 to reciprocate, and then causing the laser welding head 11 to reciprocate to perform overlap welding on the weld.

[0027] The arc blocks 18 on the inner side surfaces of the first fixing ring 3 and the second fixing ring 4 are arranged in an interlaced manner, and the multiple interlaced arc blocks 18 form a complete circle, so that the first guide rod 15 and the second guide rod 16 are indirectly and alternately squeezed, causing the ball groove 13 to reciprocate, and then causing the laser welding head 11 to reciprocate to perform overlap welding on the weld.

[0028] A support frame 19 for supporting the tower body 1 is correspondingly provided below the tower body 1. The surfaces of the two support frames 19 are both provided with a through slot 20. A slide 21 is fixedly installed inside the slot 20. The slide 21 is slidably connected inside with a slider 22 that matches it. The top surface of the slider 22 is fixedly provided with a mounting groove 23 for supporting the flange body 2.

[0029] The internal rotation of the slide 21 is connected to a screw rod 24, which is threadedly connected to the slider 22. A first motor 25 is fixedly installed on the side surface of the slide 21, and the output end of the first motor 25 is fixedly connected to the screw rod 24. The first motor 25 is a conventional forward and reverse motor in the prior art.

[0030] A fixing frame 26 is fixedly installed on the surface of the first fixing ring 3 and the second fixing ring 4 respectively, and a rotating groove 27 is fixedly installed on the surface of the second fixing ring 4. A gear ring 28 is rotatably connected inside the rotating groove 27. A follower plate 29 is fixedly installed between the gear ring 28 and the arc-shaped slide plate 5. The other ends of the first guide rod 15 and the second guide rod 16 are both fixedly installed with a fixing ball 30. The arrangement of the fixing ball 30 makes the extrusion process of the first guide rod 15 and the second guide rod 16 more convenient.

[0031] The outer side of one of the fixing frames 26 is rotatably connected to a gear 31 meshing with the gear ring 28, and the inner side of one of the fixing frames 26 is fixedly mounted with a second motor 32, the output end of the second motor 32 is fixedly connected to the gear 31, and the second motor 32 is a conventional electric motor in the prior art.

[0032] The use steps of the present invention are as follows: when using the flange welding device for tower production, the tower body 1 to be welded is first placed on the surface of the support frame 19 through the existing lifting equipment, and then the flange body 2 is placed inside the mounting groove 23. The first motor 25 rotates with the screw rod 24 to rotate, so that the slider 22 moves inside the slide 21 toward the tower body 1. The slider 22 moves with the flange body 2 and the tower body 1 to dock. After the docking of the tower body 1 and the flange body 2 is completed, the fixing frame 26 is manually pushed to move. The fixing frame 26 moves with the first fixing ring 3 and the second fixing ring 4 to the butt welding position of the tower body 1 and the flange body 2. The first fixing ring 3 and the second fixing ring 4 move with the arc-shaped slide 5 and the laser welding head 11. When the laser welding head 11 moves to the welding position, the movable block 35 is locked by rotating the locking device 38 with an external existing wrench. Then the second motor 32 rotates to rotate the gear 31, and the gear 31 rotates to rotate with the gear ring 28 in the rotating groove 27, thereby causing the gear ring 28 to rotate and rotate with the follower plate 29. The follower plate 29 rotates and rotates with the arc-shaped slide 5. At this time, the arc-shaped slide 5 rotates between the first fixing ring 3 and the second fixing ring 4 through the arc groove 7 and the ring plate 6. The arc-shaped slide 5 rotates with the mounting plate 14, the first guide rod 15 and the second guide rod 16 moves. When the first guide rod 15 is gradually squeezed by the arc block 18, the first guide rod 15 moves with the ball groove 13 to stretch the second spring 17 on the surface of the first guide rod 15. The ball groove 13 moves with the second guide rod 16 to compress the second spring 17 on the surface of the second guide rod 16. The movement of the ball groove 13 makes the ball head 12 move inside it, so that the laser welding head 11 moves in the movable ring 9. As the arc slide 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 indirectly alternately squeezed, so that the ball groove 13 reciprocates, and then the laser welding head 11 reciprocates to perform overlap welding on the weld. After the tower body 1 and the flange body 2 are butt-jointed, the laser welding head 11 moves to the welding position, and the arc-shaped slide 5 rotates between the first fixing ring 3 and the second fixing ring 4 through the arc groove 7 and the ring plate 6. The first guide rod 15 and the second guide rod 16 are indirectly and alternately squeezed, causing the ball groove 13 to reciprocate, thereby causing the laser welding head 11 to reciprocate to perform stitch welding on the weld. Compared with traditional manual welding, this welding device not only improves the welding speed of the laser welding head 11 for the tower and the flange, but also realizes automated stitch 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, driving the screw 24 to rotate, causing the slider 22 to move inside the slide 21 toward the tower body 1. The slider 22 moves and connects the flange body 2 with the tower body 1, increasing the connection speed between the tower body 1 and the flange body 2, and further improving the welding speed of the tower and flange.

[0033] Example 2: Please refer to Figure 1 - Figure 11 , combined with the basis of embodiment 1, the difference is that a mounting bracket 33 is fixedly installed on the surface of one of the support frames 19, and a slide 34 is fixedly installed on the end surfaces of the two mounting brackets 33. The interiors of the two slides 34 are slidably connected with matching moving blocks 35, and the surfaces of the two moving blocks 35 are fixedly installed with telescopes 36. The telescopes 36 are conventional electric push rods in the prior art. The telescopic ends of the telescopes 36 are fixedly connected to the fixed frames 26. According to the specifications of the tower body 1, the two telescopes 36 are extended to move upward with the fixed frames 26, thereby causing the first fixing ring 3 and the second fixing ring 4 to move upward with the fixed frames 26. When the center positions of the first fixing ring 3 and the second fixing ring 4 correspond to the center positions of the tower body 1, the telescope 36 stops working, and welding preparations are made in advance for tower bodies 1 and flange bodies 2 of different specifications, thereby increasing the practicality and functionality of the welding device.

[0034] A slot 37 is correspondingly provided on the surface of one of the slides 34, and a locking device 38 for locking the movable block 35 is slidably connected inside the slot 37. The locking device 38 is a conventional locking device 38 in the prior art. When the fixing frame 26 moves with the first fixing ring 3 and the second fixing ring 4 toward the butt welding position of the tower body 1 and the flange body 2, the fixing frame 26 moves with the telescopic device 36, so that the movable block 35 moves inside the slide 34. When the laser welding head 11 moves to the welding position, the movable block 35 is fixed by the locking device 38 to prevent the laser welding head 11 from moving and offsetting during the welding process.

[0035] The use steps of the present invention are as follows: When the flange welding device for tower production is in use, the specifications of the tower body 1 and the flange body 2 are different. Before the tower body 1 and the flange body 2 are welded, according to the specifications of the tower body 1, the two telescoping devices 36 are extended and move upward with the fixing frame 26, thereby causing the first fixing ring 3 and the second fixing ring 4 to move upward with the fixing frame 26. When the center positions of the first fixing ring 3 and the second fixing ring 4 correspond to the center position of the tower body 1, the telescoping device 36 is stopped, and welding preparations are made in advance for tower bodies 1 and flange bodies 2 of different specifications, thereby increasing the practicality and functionality of the welding device.

[0036] The above shows and describes 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 above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in 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 flange body (2) matching the tower body, characterized in that: A first fixing ring (3) and a second fixing ring (4) are respectively provided on the outside of the contact position between the tower body (1) and the flange body (2); a rotatable arc-shaped slide plate (5) is provided between the first fixing ring (3) and the second fixing ring (4); an annular plate (6) is fixedly installed on the inner side surfaces of the first fixing ring (3) and the second fixing ring (4); an arc-shaped groove (7) matching the annular plate (6) is provided on the corresponding side of the arc-shaped slide plate (5); the arc-shaped slide plate (5) is rotatably connected to the first fixing ring (3) and the second fixing ring (4) by matching the arc-shaped groove (7) and the annular plate (6); a through-type through-groove (8) is provided on the arc-shaped slide plate (5); a movable ring (9) is provided inside the through-groove (8); a plurality of first through-grooves (8) are elastically connected between the movable ring (9) and the through-groove (8); A spring (10) is provided inside the movable ring (9) with a laser welding head (11) for reciprocatingly welding the contact positions of 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 ball groove (13) matching the ball head (12) is buckled on the ball head (12); a mounting plate (14) is fixedly installed on the surface of the arc-shaped slide (5); a first guide rod (15) and a second guide rod (16) are respectively slidably connected on the two mounting plates (14); one end of the first guide rod (15) and the second guide rod (16) are both fixedly connected to the ball groove (13); and a plurality of arc blocks (18) for squeezing the first guide rod (15) and the second guide rod (16) are respectively fixedly installed on the inner side surfaces of the first fixing ring (3) and the second fixing ring (4).

2. The flange welding device for tower production according to claim 1 is characterized in that: The first guide rod (15) and the second guide rod (16) are both sleeved with a second spring (17) for resetting the first guide rod (15). 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 is characterized in that: The arc-shaped blocks (18) on the inner side surfaces of the first fixing ring (3) and the second fixing ring (4) are arranged in an interlaced manner, and the multiple interlaced arc-shaped blocks (18) form a complete circle.

4. The flange welding device for tower production according to claim 1 is characterized in that: A support frame (19) for supporting the tower body (1) is correspondingly provided below the tower body (1), and a through slot (20) is provided on each of the two support frames (19). A slide (21) is fixedly installed inside the slot (20), and a matching slider (22) is slidably connected inside the slide (21). A mounting 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 is characterized in that: The interior of the slide (21) is rotatably connected to a screw rod (24), the screw rod (24) is threadedly connected to the slider (22), and a first motor (25) is fixedly mounted on the side of the slide (21), the output end of the first motor (25) is fixedly connected to the screw rod (24).

6. The flange welding device for tower production according to claim 5, characterized in that: A fixing frame (26) is fixedly mounted on the side surfaces of the first fixing ring (3) and the second fixing ring (4), a rotating groove (27) is fixedly mounted on the second fixing ring (4), a gear ring (28) is rotatably connected inside the rotating groove (27), a follower plate (29) is fixedly mounted between the gear ring (28) and the arc-shaped slide plate (5), and a fixed ball (30) is fixedly mounted on the other end of each 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: The outer side of one of the fixing frames (26) is rotatably connected to a gear (31) meshing with the gear ring (28), and the inner side of one of the fixing frames (26) is fixedly mounted with a second motor (32), and the output end of the second motor (32) is fixedly connected to the gear (31).

8. The flange welding device for tower production according to claim 7, characterized in that: A mounting frame (33) is fixedly mounted on one of the support frames (19), and slides (34) are fixedly mounted on the ends of the two mounting frames (33). The interiors of the two slides (34) are slidably connected to matching moving blocks (35), and telescoping devices (36) are fixedly mounted on the two moving blocks (35), and the telescopic ends of the telescoping devices (36) are fixedly connected to the fixed frame (26).

9. The flange welding device for tower production according to claim 8, characterized in that: A corresponding notch (37) is provided on one of the slide seats (34), and a locking device (38) for locking the moving block (35) is slidably connected inside the notch (37).

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