Automatic centering rotating table for circular seam welding of tower drum

Abstract

The invention relates to the technical field of tower drum girth welding, and discloses a tower drum girth welding automatic centering rotary table which comprises a welding table, the end of the welding table is fixedly connected with a support, the inner wall of the support is fixedly connected with a power device, the output end of the power device is fixedly connected with a threaded rod, and the surface of the threaded rod is in threaded connection with a movable plate. A rolling rod is rotatably connected to the inner wall of the moving plate, a supporting plate is fixedly connected to the surface of the welding table, a driving device is fixedly connected to the bottom of the supporting plate, and an infrared detection device is fixedly connected to the top of the supporting plate. A power device is started to drive a threaded rod to rotate in a moving plate, the moving plate is in threaded connection with the threaded rod, when the threaded rod rotates, the moving plate can be pushed to move towards the outer end of a welding table, after a tower drum is placed at the top of the moving plate, the moving plate is pushed to reset through the threaded rod, and an infrared detection device can detect the position of the tower drum; and the tower drum can be moved to the center of the limiting ring through the moving plate, so that welding treatment is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of tower girth welding, in particular to an automatic centering rotary table for tower girth welding. Background Art

[0002] The tower is a cylindrical structure used to support and connect the nacelle and the foundation ring in a wind turbine. It is mainly made of steel and has three core functions: support, height adjustment, and vibration reduction. The tower is the core supporting structure of the wind power generation system. It is usually a conical or cylindrical steel hollow column that connects the nacelle and other equipment to the ground foundation ring. The tower is mainly used to bear the weight of the nacelle, blades and other equipment to ensure the stable operation of the unit. The tower needs to be welded during its production. Generally, the tower is large in size. When welding the circumferential seam of the tower, it is necessary to determine the position of the circumferential seam and adjust the position of the welding device, which increases the welding time of the tower and easily affects the welding efficiency of the tower production. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic centering rotary table for tower girth welding to solve the problems raised in the above background technology.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention provides an automatic centering rotary table for tower cylinder annular seam welding, comprising a welding table, an end portion of the welding table is fixedly connected to a bracket, an inner wall of the bracket is fixedly connected to a power device, an output end of the power device is fixedly connected to a threaded rod, a surface of the threaded rod is threadedly connected to a movable plate, an inner wall of the movable plate is rotatably connected to a roller rod, a surface of the welding table is fixedly connected to a support plate, a bottom of the support plate is fixedly connected to a driving device, a top of the support plate is fixedly connected to an infrared detection device, an extension plate is fixedly connected to the bottom of the welding table, a tower is provided on the top of the movable plate, a welding component is provided on the top of the support plate, a stabilizing component is provided at the end of the welding table, and a pressing component is provided above the stabilizing component. The welding component includes a sliding rod, the bottom of the sliding rod is fixedly connected to the top of the support plate, the top of the driving device is fixedly connected to a screw, a limiting ring is provided above the movable plate, the surface of the limiting ring is fixedly connected to a circular hole frame, the inner wall of the circular hole frame is rotatably connected to a groove ring, the inner ring wall of the groove ring is fixedly connected to the support ring, the inner wall of the support ring is installed with a detection device, the top of the detection device is installed with a robotic arm, the end of the robotic arm away from the support ring is provided with a welding device, the top of the limiting ring is installed with a driver, and the output end of the driver is fixedly connected to a gear.

[0005] Furthermore, the surface of the movable plate contacts the inner wall of the welding table, the end of the movable plate extends to the outer end of the welding table, the lower surface of the roller extends to the bottom outer end of the movable plate, the bottom of the roller contacts the bottom of the inner wall of the welding table, and the bottom of the roller contacts the top of the extension plate.

[0006] Furthermore, there are two circular hole racks, which are symmetrically arranged with the limiting ring as the center, and the top of the screw rod passes through the support plate and extends to the outer end of the support plate.

[0007] Furthermore, the inner walls of the two circular hole frames are respectively threadedly connected to the surface of the screw and slidingly connected to the surface of the slide rod, and the groove ring extends to the outer end of the circular hole frame near one end of the support ring, and the surface of the gear is engaged with the inner wall of the groove ring.

[0008] Furthermore, the stabilizing component includes a fixing frame, an end of the fixing frame is fixedly connected to the end of the support plate, an end of the fixing frame away from the support plate is fixedly connected to a telescopic rod, an end of the telescopic rod away from the fixing frame is fixedly connected to an extrusion plate, an end of the extrusion plate close to the telescopic rod is fixedly connected to a bent plate, an end of the bent plate away from the extrusion plate is fixedly connected to a connecting rod, an end of the connecting rod is hinged to a tripod, an elastic rod is hinged to the center of the tripod, an end of the elastic rod away from the tripod is fixedly connected to a force-bearing frame, and a spring piece is fixedly connected to the surface of the tripod.

[0009] Furthermore, there are two fixing brackets, which are symmetrically arranged with the welding table as the center, and one end of the fixing bracket away from the support plate extends to above the support plate.

[0010] Furthermore, the bottom of the extrusion plate contacts the top of the welding table, the end of the force-bearing frame away from the elastic rod contacts the end of the movable plate, and the telescopic rod is located above the support plate.

[0011] Furthermore, the downward pressing component includes a positioning frame, the bottom of the positioning frame is fixedly connected to the top of the connecting rod, the end of the positioning frame away from the connecting rod is fixedly connected to an inclined plate, the end of the inclined plate away from the positioning frame is hinged to a semicircular frame, the center of the semicircular frame is hinged to an elastic frame, the top of the elastic frame is fixedly connected to a pressure rod, and the end of the pressure rod away from the elastic frame is fixedly connected to a stabilizing plate.

[0012] Furthermore, the semicircular frame is located above the tripod, the top of the pressure rod extends to above the limiting ring, and the bottom of the stabilizing plate contacts the top of the tower.

[0013] The present invention has the following beneficial effects: The present invention starts the power device to drive the threaded rod to rotate inside the moving plate, and the moving plate is threadedly connected to the threaded rod. When the threaded rod rotates, it pushes the moving plate to the outer end of the welding table. After the tower is placed on the top of the moving plate, the moving plate is pushed to reset by the threaded rod. The infrared detection device will detect the position of the tower so that the tower can be moved to the center of the limit ring through the moving plate for convenient welding. A rolling rod is provided at the bottom of the moving plate to increase the stability of the moving plate during movement. After the tower is placed, the driving device is started to drive the screw to rotate. The driving device will drive the screw to rotate forward and reverse, and the circular hole frame will As the screw rotates, the limit ring is pushed downward, and when the limit ring moves downward, it pushes the detection device to move through the groove ring and the support ring. The driver drives the gear to rotate during operation, and the gear drives the groove ring to rotate inside the limit ring through engagement when rotating. The detection device rotates around the surface of the tower along with the support ring, so that the detection device can comprehensively detect the annular seam on the surface of the tower. After detecting the position of the annular seam, the robotic arm will push the welding device to weld the annular seam of the tower, thereby improving the convenience of the tower annular seam welding. The annular seam of the tower is detected by the rotation of the detection device to avoid welding leakage in the welding device.

[0014] When the movable plate of the present invention is reset, it will contact the force-bearing frame, and the force-bearing frame will push the elastic rod to move through the movable plate. When the elastic rod moves, it will push the center of the tripod to move toward the end away from the movable plate, and the end of the tripod is limited by the connecting rod. When the center of the tripod moves, the end of the tripod will pull the connecting rod to move closer to each other. When the connecting rod moves, it will push the extrusion plate through the bent plate to extrude and fix the tower. The extrusion plate is used to limit the tower, thereby improving the stability of the tower during welding and avoiding dislocation of the tower during welding. The fixed frame limits the extrusion plate through the telescopic rod, thereby improving the stability of the extrusion plate during operation.

[0015] When the connecting rods of the present invention move toward each other, they will push the inclined plate to move through the positioning frame. When the inclined plate moves, it will push the semicircular frame to produce deformation. At this time, the center of the semicircular frame will move downward. When the center of the semicircular frame moves downward, it will pull the pressure rod downward through the elastic frame. When the pressure rod moves downward, it will push the stabilizing plate to squeeze the top of the tower, further improving the stability of the tower during welding.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the extension plate structure of the present invention; Figure 3 This is a schematic cross-sectional structural diagram of the movable plate of the present invention; Figure 4 This is a schematic diagram of the overall structure of the welding component of the present invention; Figure 5 This is another structural schematic diagram of the welding component of the present invention; Figure 6 This is a schematic diagram of the overall structure of the stabilizing component of the present invention; Figure 7 This is another structural schematic diagram of the stabilizing component of the present invention; Figure 8 It is a schematic diagram of the overall structure of the pressing component of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows: In the figure: 1. welding table; 2. moving plate; 3. driving device; 4. extension plate; 5. support plate; 6. infrared detection device; 7. bracket; 8. power device; 9. roller; 10. threaded rod; 11. tower; 12. welding component; 13. stabilizing component; 14. pressing component; 20. sliding rod; 21. limiting ring; 22. screw; 23. circular hole frame; 24. supporting ring; 25. robotic arm; 26. welding device; 27. groove ring; 28. driver; 29. ​​gear; 201. detection device; 30. fixing frame; 31. bending plate; 32. extrusion plate; 33. telescopic rod; 34. connecting rod; 35. elastic rod; 36. spring; 37. tripod; 38. force frame; 40. positioning frame; 41. inclined plate; 42. elastic frame; 43. pressure rod; 44. semicircular frame; 45. stabilizing plate. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1-8 As shown, the present invention is an automatic centering rotary table for tower girth welding, comprising a welding table 1, a bracket 7 fixedly connected to the end of the welding table 1, a power device 8 fixedly connected to the inner wall of the bracket 7, a threaded rod 10 fixedly connected to the output end of the power device 8, a movable plate 2 threadedly connected to the surface of the threaded rod 10, a roller 9 rotatably connected to the inner wall of the movable plate 2, a support plate 5 fixedly connected to the surface of the welding table 1, a driving device 3 fixedly connected to the bottom of the support plate 5, an infrared detection device 6 fixedly connected to the top of the support plate 5, an extension plate 4 fixedly connected to the bottom of the welding table 1, and the power device 8 is started to drive the threaded rod 10 to move The inner part of the plate 2 rotates, and the movable plate 2 is threadedly connected to the threaded rod 10. When the threaded rod 10 rotates, the movable plate 2 is pushed to move toward the outer end of the welding table 1. After the tower 11 is placed on the top of the movable plate 2, the movable plate 2 is pushed to reset by the threaded rod 10. The infrared detection device 6 detects the position of the tower 11 so that the tower 11 can be moved to the center of the limit ring 21 through the movable plate 2 for convenient welding. The tower 11 is provided on the top of the movable plate 2, and the welding component 12 is provided on the top of the support plate 5. The end of the welding table 1 is provided with a stabilizing component 13, and a pressing component 14 is provided above the stabilizing component 13; The welding component 12 includes a slide rod 20, the bottom of the slide rod 20 is fixedly connected to the top of the support plate 5, the top of the driving device 3 is fixedly connected to a screw rod 22, a limit ring 21 is provided above the movable plate 2, the surface of the limit ring 21 is fixedly connected to a circular hole frame 23, the inner wall of the circular hole frame 23 is rotatably connected to a groove ring 27, the inner ring wall of the groove ring 27 is fixedly connected to a support ring 24, a detection device 201 is installed on the inner wall of the support ring 24, a mechanical arm 25 is installed on the top of the detection device 201, and a welding device 26 is provided at the end of the mechanical arm 25 away from the support ring 24, a driver 28 is installed on the top of the limit ring 21, and the output end of the driver 28 is fixedly connected to a gear 29. After the tower 11 is placed, start The driving device 3 drives the screw 22 to rotate, and the driving device 3 will drive the screw 22 to rotate forward and reverse. The circular hole frame 23 will push the limit ring 21 to move downward as the screw 22 rotates. When the limit ring 21 moves downward, it pushes the detection device 201 to move through the groove ring 27 and the support ring 24. The driver 28 will drive the gear 29 to rotate during operation. When the gear 29 rotates, it drives the groove ring 27 to rotate inside the limit ring 21 through engagement. The detection device 201 rotates around the surface of the tower 11 with the support ring 24, so that the detection device 201 can comprehensively detect the annular seam on the surface of the tower 11. After detecting the position of the annular seam, the robotic arm 25 will push the welding device 26 to weld the annular seam of the tower 11.

[0022] The surface of the movable plate 2 contacts the inner wall of the welding table 1, the end of the movable plate 2 extends to the outer end of the welding table 1, the lower surface of the roller rod 9 extends to the bottom outer end of the movable plate 2, the bottom of the roller rod 9 contacts the bottom of the inner wall of the welding table 1, and the bottom of the roller rod 9 contacts the top of the extension plate 4.

[0023] There are two circular hole racks 23 , which are symmetrically arranged with the limiting ring 21 as the center. The top of the screw rod 22 passes through the support plate 5 and extends to the outer end of the support plate 5 .

[0024] The inner walls of the two circular hole frames 23 are respectively threadedly connected to the surface of the screw 22 and slidingly connected to the surface of the slide rod 20. The groove ring 27 extends to the outer end of the circular hole frame 23 near the end of the support ring 24, and the surface of the gear 29 engages with the inner wall of the groove ring 27.

[0025] The stabilizing component 13 includes a fixing frame 30, the end of the fixing frame 30 is fixedly connected to the end of the support plate 5, the end of the fixing frame 30 away from the support plate 5 is fixedly connected to a telescopic rod 33, the end of the telescopic rod 33 away from the fixing frame 30 is fixedly connected to an extrusion plate 32, the end of the extrusion plate 32 close to the telescopic rod 33 is fixedly connected to a bent plate 31, the end of the bent plate 31 away from the extrusion plate 32 is fixedly connected to a connecting rod 34, the end of the connecting rod 34 is hinged to a tripod 37, the center of the tripod 37 is hinged to an elastic rod 35, the end of the elastic rod 35 away from the tripod 37 is fixedly connected to a force frame 38, the surface of the tripod 37 It is fixedly connected with a spring piece 36, and the movable plate 2 will contact the force frame 38 when it is reset. The force frame 38 pushes the elastic rod 35 to move through the movable plate 2. When the elastic rod 35 moves, it pushes the center of the tripod 37 to move toward the end away from the movable plate 2, and the end of the tripod 37 is limited by the connecting rod 34. When the center of the tripod 37 moves, the end of the tripod 37 will pull the connecting rod 34 to move closer to each other. When the connecting rod 34 moves, it will push the extrusion plate 32 through the bent plate 31 to extrude and fix the tower 11. The extrusion plate 32 is used to limit the tower 11, thereby improving the stability of the tower 11 during welding.

[0026] There are two fixing frames 30 , which are symmetrically arranged with the welding table 1 as the center. One end of the fixing frame 30 away from the support plate 5 extends to above the support plate 5 .

[0027] The bottom of the extrusion plate 32 contacts the top of the welding table 1 , the end of the force frame 38 away from the elastic rod 35 contacts the end of the movable plate 2 , and the telescopic rod 33 is located above the support plate 5 .

[0028] The downward pressing component 14 includes a positioning frame 40, the bottom of the positioning frame 40 is fixedly connected to the top of the connecting rod 34, the positioning frame 40 is fixedly connected to an inclined plate 41 at one end away from the connecting rod 34, the inclined plate 41 is hinged to a semicircular frame 44 at one end away from the positioning frame 40, the center of the semicircular frame 44 is hinged to an elastic frame 42, the top of the elastic frame 42 is fixedly connected to a pressure rod 43, and the pressure rod 43 is fixedly connected to a stabilizing plate 45 at one end away from the elastic frame 42. When the connecting rods 34 move closer to each other, the inclined plate 41 will be pushed to move through the positioning frame 40, and the inclined plate 41 will push the semicircular frame 44 to deform when moving. At this time, the center of the semicircular frame 44 will move downward. When the center of the semicircular frame 44 moves downward, it will pull the pressure rod 43 downward through the elastic frame 42. When the pressure rod 43 moves downward, it will push the stabilizing plate 45 to squeeze the top of the tower 11.

[0029] The semicircular frame 44 is located above the tripod 37 , the top of the pressure rod 43 extends to above the limiting ring 21 , and the bottom of the stabilizing plate 45 contacts the top of the tower 11 .

[0030] When in use, start the power device 8 to drive the threaded rod 10 to rotate inside the movable plate 2. The movable plate 2 is threadedly connected to the threaded rod 10. When the threaded rod 10 rotates, it will push the movable plate 2 to move toward the outer end of the welding table 1. After the tower 11 is placed on the top of the movable plate 2, the movable plate 2 is pushed to reset by the threaded rod 10. The infrared detection device 6 will detect the position of the tower 11 so that the tower 11 can be moved to the center of the limit ring 21 through the movable plate 2 for convenient welding. A roller 9 is provided at the bottom of the movable plate 2. The roller 9 is used to increase the stability of the movable plate 2 during movement. After the tower 11 is placed, start the driving device 3 to drive the screw 22 to rotate. The driving device 3 The screw 22 will be driven to rotate forward and reverse, and the circular hole frame 23 will push the limit ring 21 downward as the screw 22 rotates. When the limit ring 21 moves downward, it pushes the detection device 201 to move through the groove ring 27 and the support ring 24. The driver 28 will drive the gear 29 to rotate during operation. When the gear 29 rotates, it drives the groove ring 27 to rotate inside the limit ring 21 through engagement. The detection device 201 rotates around the surface of the tower 11 along with the support ring 24, so that the detection device 201 can fully detect the annular seam on the surface of the tower 11. After detecting the position of the annular seam, the mechanical arm 25 will push the welding device 26 to weld the annular seam of the tower 11, thereby improving the annular seam of the tower 11. The convenience of seam welding is achieved by detecting the circumferential seam of the tower 11 by rotating the detection device 201 to avoid welding leakage in the welding device 26. The movable plate 2 will contact the force-bearing frame 38 when resetting, and the force-bearing frame 38 will push the elastic rod 35 to move through the movable plate 2. When the elastic rod 35 moves, it will push the center of the tripod 37 to move toward the end away from the movable plate 2, and the end of the tripod 37 is limited by the connecting rod 34. When the center of the tripod 37 moves, the end of the tripod 37 will pull the connecting rod 34 to move closer to each other. When the connecting rod 34 moves, it will push the extrusion plate 32 to squeeze and fix the tower 11 through the bent plate 31, and the tower 11 is fixed by the extrusion plate 32. Limiting improves the stability of the tower 11 during welding and avoids the tower 11 from being misplaced during welding. The fixed frame 30 limits the extrusion plate 32 through the telescopic rod 33 to improve the stability of the extrusion plate 32 during operation. When the connecting rod 34 moves closer to each other, it will push the inclined plate 41 to move through the positioning frame 40. When the inclined plate 41 moves, it pushes the semicircular frame 44 to deform. At this time, the center of the semicircular frame 44 will move downward. When the center of the semicircular frame 44 moves downward, it will pull the pressure rod 43 downward through the elastic frame 42. When the pressure rod 43 moves downward, it will push the stabilizing plate 45 to squeeze the top of the tower 11, further improving the stability of the tower 11 during welding.

[0031] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic centering rotary table for tower girth welding, comprising a welding table (1), wherein the end of the welding table (1) is fixedly connected to a bracket (7), the inner wall of the bracket (7) is fixedly connected to a power device (8), the output end of the power device (8) is fixedly connected to a threaded rod (10), the surface of the threaded rod (10) is threadedly connected to a movable plate (2), the inner wall of the movable plate (2) is rotatably connected to a roller (9), the surface of the welding table (1) is fixedly connected to a support plate (5), the bottom of the support plate (5) is fixedly connected to a driving device (3), the top of the support plate (5) is fixedly connected to an infrared detection device (6), the bottom of the welding table (1) is fixedly connected to an extension plate (4), and a tower (11) is provided on the top of the movable plate (2), characterized in that: A welding component (12) is provided on the top of the support plate (5), a stabilizing component (13) is provided at the end of the welding platform (1), and a pressing component (14) is provided above the stabilizing component (13); The welding component (12) includes a sliding rod (20), the bottom of the sliding rod (20) is fixedly connected to the top of the support plate (5), the top of the driving device (3) is fixedly connected to a screw rod (22), a limiting ring (21) is provided above the movable plate (2), the surface of the limiting ring (21) is fixedly connected to a circular hole frame (23), the inner wall of the circular hole frame (23) is rotatably connected to a groove ring (27), the inner ring wall of the groove ring (27) is fixedly connected to a support ring (24), a detection device (201) is installed on the inner wall of the support ring (24), a mechanical arm (25) is installed on the top of the detection device (201), and a welding device (26) is provided at one end of the mechanical arm (25) away from the support ring (24), a driver (28) is installed on the top of the limiting ring (21), and the output end of the driver (28) is fixedly connected to a gear (29).

2. The automatic centering rotary table for tower girth welding according to claim 1 is characterized in that: The surface of the movable plate (2) contacts the inner wall of the welding table (1), the end of the movable plate (2) extends to the outer end of the welding table (1), the lower surface of the roller (9) extends to the bottom outer end of the movable plate (2), the bottom of the roller (9) contacts the bottom of the inner wall of the welding table (1), and the bottom of the roller (9) contacts the top of the extension plate (4).

3. The automatic centering rotary table for tower girth welding according to claim 2 is characterized in that: There are two circular hole frames (23), and the two circular hole frames (23) are symmetrically arranged with the limiting ring (21) as the center. The top of the screw (22) passes through the support plate (5) and extends to the outer end of the support plate (5).

4. The automatic centering rotary table for tower girth welding according to claim 3 is characterized in that: The inner walls of the two circular hole frames (23) are respectively threadedly connected to the surface of the screw rod (22) and slidably connected to the surface of the slide rod (20), and one end of the groove ring (27) close to the support ring (24) extends to the outer end of the circular hole frame (23), and the surface of the gear (29) is meshed with the inner wall of the groove ring (27).

5. The automatic centering rotary table for tower girth welding according to claim 4 is characterized in that: The stabilizing component (13) comprises a fixing frame (30), an end of the fixing frame (30) is fixedly connected to an end of the support plate (5), an end of the fixing frame (30) away from the support plate (5) is fixedly connected to a telescopic rod (33), an end of the telescopic rod (33) away from the fixing frame (30) is fixedly connected to an extrusion plate (32), an end of the extrusion plate (32) close to the telescopic rod (33) is fixedly connected to a bent plate (31), an end of the bent plate (31) away from the extrusion plate (32) is fixedly connected to a connecting rod (34), an end of the connecting rod (34) is hinged to a tripod (37), an elastic rod (35) is hinged to the center of the tripod (37), an end of the elastic rod (35) away from the tripod (37) is fixedly connected to a force-bearing frame (38), and a spring piece (36) is fixedly connected to the surface of the tripod (37).

6. The automatic centering rotary table for tower girth welding according to claim 5, characterized in that: There are two fixing frames (30), and the two fixing frames (30) are symmetrically arranged with the welding table (1) as the center. One end of the fixing frame (30) away from the support plate (5) extends to above the support plate (5).

7. The automatic centering rotary table for tower girth welding according to claim 6, characterized in that: The bottom of the extrusion plate (32) contacts the top of the welding table (1), the end of the force frame (38) away from the elastic rod (35) contacts the end of the movable plate (2), and the telescopic rod (33) is located above the support plate (5).

8. The automatic centering rotary table for tower girth welding according to claim 7, characterized in that: The pressing component (14) includes a positioning frame (40), the bottom of the positioning frame (40) is fixedly connected to the top of the connecting rod (34), the end of the positioning frame (40) away from the connecting rod (34) is fixedly connected to an inclined plate (41), the end of the inclined plate (41) away from the positioning frame (40) is hinged to a semicircular frame (44), the center of the semicircular frame (44) is hinged to an elastic frame (42), the top of the elastic frame (42) is fixedly connected to a pressure rod (43), and the end of the pressure rod (43) away from the elastic frame (42) is fixedly connected to a stabilizing plate (45).

9. The automatic centering rotary table for tower girth welding according to claim 8, characterized in that: The semicircular frame (44) is located above the tripod (37), the top of the pressure rod (43) extends to above the limiting ring (21), and the bottom of the stabilizing plate (45) contacts the top of the tower (11).

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