A welding positioner for wind tower steel pipes

Abstract

The application discloses a kind of welding positioners for wind power tower steel pipe, it is related to welding positioner technical field, it includes machine table and two tower steel pipe main bodies, the positioner further includes: positioner mechanism, it is set as two, the positioner mechanism is used for the positioner of tower steel pipe main body welding, positioner mechanism includes: first electric push rod, sliding frame, moving rod, gear ring, fixed frame, motor and gear, first electric push rod is fixedly installed in the bottom of machine table, the automatic rotation and transverse movement of the tower steel pipe main body are driven by two positioner mechanisms in the application, the butt end is quickly aligned and the continuous rotary welding of annular weld is realized, without welding worker moving position can complete the automatic welding of whole weld, while cooperating clamping mechanism, welding end support mechanism and stabilizing mechanism guarantee the centering accuracy and support stability in steel pipe rotating process, effectively reduce the labor intensity of worker, significantly improve welding production efficiency and the coherence of batch welding operation.

Description

Technical Field

[0001] This invention relates to the field of welding positioner technology, and more particularly to a welding positioner for steel pipes of wind power towers. Background Technology

[0002] A positioner is a specialized welding auxiliary device suitable for welding repositioning during rotary operations to achieve the ideal processing position and welding speed. It can be used in conjunction with manipulators and welding machines to form an automatic welding center, or for workpiece repositioning during manual operations. A welding positioner generally consists of a worktable rotation mechanism and a tilting mechanism. Through the lifting, tilting, and rotation of the worktable, the workpiece fixed on the worktable is brought to the required welding or assembly angle.

[0003] In existing technologies, wind power steel pipes generally undergo a series of processes including forming, welding, straightening, and heat treatment. When performing multi-directional circumferential welding on hollow steel pipes, the welding process involves the welder completing a section of circumferential weld at one location, then moving to the next location with the corresponding welding equipment to weld the next section of circumferential weld. This welding method results in high labor intensity for welders, low welding production efficiency, and is not suitable for mass production of large quantities of workpieces. Therefore, this application proposes a welding positioner for wind power tower steel pipes to solve the above problems. Summary of the Invention

[0004] The purpose of this application is to provide a welding positioner for steel pipes of wind turbine towers, in order to solve the problem mentioned in the background art that when performing multi-directional circumferential welding on hollow steel pipes, the welding process is as follows: after the welder finishes welding a section of circumferential weld at one position, he moves to the next position with the corresponding welding equipment to weld the next section of circumferential weld. This welding method results in high labor intensity for the welder, low welding production efficiency, and is not suitable for mass welding production of large quantities of workpieces.

[0005] To achieve the above objectives, this application provides the following technical solution: a welding positioner for wind turbine tower steel pipes, comprising a machine base and two tower steel pipe bodies, the positioner further comprising: The displacement mechanism is configured in two parts. The displacement mechanism is used for displacement during the welding of the tower steel pipe body. The displacement mechanism includes: a first electric push rod, a slide, a moving rod, a gear ring, a fixed frame, a motor, and a gear. The first electric push rod is fixedly installed at the bottom of the machine base. One side of the slide is fixedly installed on the output shaft of the corresponding first electric push rod. Two sliding holes are opened on the machine base. The top two ends of the slide pass through the two sliding holes and are slidably connected to the inner wall of the sliding holes. The front and rear sides of the moving rod are fixedly installed to the top two ends of the corresponding slide. A round hole is opened on the moving rod. The gear ring is rotatably connected to one side of the moving rod. The fixed frame is fixedly installed on one side of the moving rod. The top of the fixed frame is fixedly installed on the bottom of the motor. The output shaft of the motor is fixedly installed on the gear, and the gear meshes with the gear ring. The clamping mechanism is configured in two parts, each clamping mechanism having a corresponding toothed ring on one side, and the clamping mechanism cooperating with the corresponding tower steel pipe body; A welding end support mechanism is installed on the top of the machine base, and the welding end support mechanism cooperates with the two tower steel pipe bodies respectively; The stabilizing mechanism is configured in two parts, which are respectively located at the left and right ends of the machine platform and cooperate with the corresponding tower steel pipe body. The welding mechanism is located on the top of the machine base and is respectively connected to the butt joints of the two tower steel pipe bodies; With the above structure, two positioning mechanisms clamp the main body of the tower steel pipe from the left and right sides respectively. The clamping mechanism fixes the main body of the steel pipe on the gear ring. The motor drives the gear to rotate the gear ring, causing the main body of the steel pipe to rotate around its own axis. This realizes the continuous rotation and positioning of the steel pipe during the welding process. The continuous welding of the entire circumferential weld can be completed without the welding worker having to move. The first electric push rod pushes the slide and the moving rod to move laterally along the sliding hole, adjusting the distance between the two main bodies of the tower steel pipe so that the docking ends of the two main bodies of the tower steel pipe are accurately aligned. The entire positioning process is completed automatically without manual intervention, which solves the problem of high labor intensity and low production efficiency caused by the frequent movement of workers in traditional welding methods.

[0006] Preferably, the clamping mechanism includes four rectangular sleeves, four rectangular rods, four clamping plates, four anti-slip pads, and four second electric push rods. The four rectangular sleeves are all fixedly installed on one side of the toothed ring, and the rectangular sleeves slide on their corresponding rectangular rods. One side of the clamping plate is fixedly installed on one end of the corresponding rectangular rod, and the anti-slip pads are fixedly installed on the other side of the corresponding clamping plate. The second electric push rods are fixedly installed on their corresponding rectangular sleeves, and the output shafts of the second electric push rods are fixedly installed on their corresponding rectangular rods. One end of the tower steel pipe body passes through a circular hole and the toothed ring, respectively contacting the four anti-slip pads. The clamping mechanism uses four rectangular sleeves fixed to one side of the toothed ring and... A rectangular rod is slidably fitted, and a second electric push rod pushes the rectangular rod and clamping plates to move towards the center of the toothed ring. The four clamping plates simultaneously clamp the outer wall of the tower steel pipe body from four points in the circumferential direction. The four-point evenly distributed clamping method ensures that the clamping force is evenly distributed on the circumference of the steel pipe, avoiding steel pipe deformation or unstable clamping due to uneven clamping force. The anti-slip pad uses high friction material to increase the friction between the clamping plates and the outer wall of the steel pipe, preventing the steel pipe from circumferentially slipping due to gravity or welding torque when the toothed ring rotates. The radial position of the four clamping plates can be adjusted independently, allowing the clamping mechanism to adapt to wind power tower steel pipes of different diameters, enhancing the versatility and clamping reliability of the positioner.

[0007] Preferably, an annular groove is formed on one side of the moving rod, and four sliders are fixedly installed on one side of the toothed ring. All four sliders are slidably connected in the annular groove. By forming an annular groove on one side of the moving rod and fixing four sliders on one side of the toothed ring, and having all four sliders slidably connected in the annular groove, when the motor drives the gear to rotate the toothed ring, the four sliders slide synchronously along the annular groove. The annular groove provides precise circumferential guidance for the toothed ring, preventing radial runout or axial movement of the toothed ring during rotation, ensuring that the toothed ring always remains coaxial with the moving rod, so that the steel pipe body clamped on the toothed ring maintains a stable center of rotation during rotation. The four sliders are evenly distributed in an annular shape, so that the rotational force of the toothed ring is uniform. The cooperation between the annular groove and the sliders also bears the weight of the toothed ring and the steel pipe body, reducing the extra load at the meshing point of the gear and the toothed ring, and improving the smoothness of the toothed ring rotation.

[0008] Preferably, a bearing housing is fixedly installed on one side of the moving rod, and the bearing housing is fixedly sleeved on the output shaft of the motor. By fixing the bearing housing on one side of the moving rod and sleeved on the output shaft of the motor, the bearing housing provides stable rotational support for the output shaft of the motor, so that the output shaft of the motor maintains a horizontal posture when driving the gear to rotate and reduces radial runout during rotation, ensuring the meshing accuracy and transmission smoothness between the gear and the gear ring. The bearing housing also bears the radial meshing force and axial thrust transmitted from the gear, reducing the load on the internal bearings of the motor and extending the service life of the motor. The installation position of the bearing housing close to the gear shortens the cantilever length of the output shaft, further improving the support rigidity of the motor output shaft and making the meshing of the gear and the gear ring more stable and reliable.

[0009] Preferably, the welding end support mechanism includes two second electric slide rails, a mounting plate, a fourth electric push rod, a support plate, four first rollers, and four second telescopic rods. The two second electric slide rails are fixedly mounted on the top of the machine base. The bottom of the mounting plate is slidably mounted on the top of the two second electric slide rails. The fourth electric push rod is fixedly mounted on the top of the mounting plate, and its output shaft is fixedly mounted on the bottom of the support plate. The four second telescopic rods are fixedly mounted on the outer side of the mounting plate, and their top ends are fixedly mounted on the bottom of the support plate. The four first rollers are rotatably connected to the top of the support plate. Two first rollers on the same side roll in contact with the corresponding tower steel pipe body. The welding end support mechanism utilizes two second electric slide rails... The electric slide rail pushes the mounting plate to move along the length of the machine, allowing the position of the support plate to be adjusted according to the position of the joint ends of the two tower steel pipes. The fourth electric push rod pushes the support plate up and down, causing the four first rollers to contact and support the area near the joint ends of the steel pipes from the bottom. The four first rollers make rolling contact with the outer wall of the steel pipes, providing vertical support while allowing the steel pipes to rotate freely around their own axis during welding. The four first rollers are divided into two groups to support the area near the joint ends of the two steel pipes respectively, ensuring that the height of the steel pipes on both sides of the joint ends is consistent and that the circumferential seam is accurately aligned. The second telescopic rod provides vertical guidance for the support plate to prevent skewing during the lifting and lowering process. The lifting and lowering adjustment of the support plate allows the welding end support mechanism to adapt to steel pipes of different diameters.

[0010] Preferably, two sliding rods are fixedly installed at the bottom of the mounting plate. The bottom end of each sliding rod passes through a corresponding sliding hole and is slidably connected to the inner wall of the hole. By fixing two sliding rods at the bottom of the mounting plate, and having the bottom end of each sliding rod pass through a corresponding sliding hole and be slidably connected to the inner wall of the hole, when the second electric slide rail pushes the mounting plate to move along the length of the machine, the sliding rod slides synchronously along the sliding hole. The sliding hole provides precise linear guidance for the mounting plate, preventing the mounting plate from swaying or tilting during movement, ensuring that the first roller shaft on the support plate is always perpendicular to the axis of the steel pipe body, so that the supporting force is in the correct and effective direction. The cooperation between the sliding rod and the sliding hole also bears part of the weight of the mounting plate and the support plate, reducing the vertical load of the second electric slide rail, and making the horizontal movement more stable and smooth.

[0011] Preferably, the stabilizing mechanism includes a horizontal plate, a fifth electric push rod, a V-shaped plate, and two second rollers. One end of the horizontal plate is fixedly mounted on one end of the machine base, the fifth electric push rod is fixedly mounted on the horizontal plate, the bottom of the V-shaped plate is fixedly mounted on the output shaft of the fifth electric push rod, and the two second rollers are rotatably connected to the top of the V-shaped plate. The two second rollers are in rolling contact with the corresponding tower steel pipe body. The horizontal plate is fixed to the end of the machine base in the stabilizing mechanism, and the fifth electric push rod pushes the V-shaped plate up and down. The two second rollers on the top of the V-shaped plate contact the corresponding tower steel pipe body from below. The V-groove structure of the V-shaped plate on the bottom outer wall at the far end of the body allows the steel pipe to automatically center itself under its own weight. The two second rollers are in rolling contact with the outer wall of the steel pipe, providing auxiliary support while allowing the steel pipe to rotate freely. The stabilizing mechanism supports the steel pipe extending outside the machine from both the left and right ends of the machine, preventing the end of the long steel pipe from sagging and swaying due to the weight of the suspended part during rotation, thus improving the overall stability of the steel pipe during welding. The adjustable lifting stroke of the fifth electric push rod allows the stabilizing mechanism to adapt to steel pipes of different diameters.

[0012] Preferably, a third telescopic rod is fixedly installed on the horizontal plate, with its top end fixedly installed on one side of the V-shaped plate. By fixing the third telescopic rod to the horizontal plate and its top end to one side of the V-shaped plate, the third telescopic rod extends and retracts accordingly when the fifth electric push rod pushes the V-shaped plate up and down. The third telescopic rod provides precise vertical guidance for the V-shaped plate, preventing it from swaying forward or backward or tilting left or right during lifting and lowering. This ensures that the center of the V-groove of the V-shaped plate always coincides with the axis of the steel pipe body, allowing the steel pipe to automatically center on the V-shaped plate. The third telescopic rod also bears part of the weight of the V-shaped plate and the steel pipe, reducing the lateral load on the fifth electric push rod and extending its service life. Simultaneously, the limiting function of the third telescopic rod prevents the fifth electric push rod from overextending and causing the V-shaped plate to collide with the steel pipe.

[0013] Preferably, the welding mechanism includes a bracket, a first electric slide rail, a connecting plate, a third electric push rod, and a welding machine. The bottom end of the bracket is fixedly installed on the top of the machine base, the first electric slide rail is fixedly installed on the bottom of the bracket, the connecting plate is slidably installed on the bottom of the first electric slide rail, the third electric push rod is fixedly installed on the bottom of the connecting plate, and the welding machine is fixedly installed on the output shaft of the third electric push rod. The bracket fixed on the top of the machine base in the welding mechanism provides installation support for the first electric slide rail. The first electric slide rail drives the connecting plate to move horizontally, enabling the welding machine to move along the axis of the steel pipe to the butt weld position. The third electric push rod pushes the welding machine to lift and lower, adjusting the distance between the welding torch and the surface of the steel pipe to achieve welding feed. Under the combined drive of the first electric slide rail and the third electric push rod, the welding machine can perform two-dimensional positioning in the vertical plane, accurately aligning the annular butt weld of the two tower steel pipe bodies. During the welding process, the toothed ring drives the steel pipe to rotate at a uniform speed, and the welding machine can complete the automatic welding of the entire annular weld by maintaining a fixed position. There is no need for manual hand-held welding torch movement along the annular trajectory, which improves the welding speed and the consistency of weld quality.

[0014] Preferably, two first telescopic rods are fixedly installed on the top of the welding machine, with the top ends of both first telescopic rods fixedly installed on the bottom of the connecting plate. By fixing the two first telescopic rods to the top of the welding machine and their top ends to the bottom of the connecting plate, when the third electric push rod pushes the welding machine to adjust the height of the welding torch, the two first telescopic rods extend and retract synchronously. The first telescopic rods provide precise vertical guidance for the welding machine, preventing it from swaying forward or backward or tilting left or right during lifting, ensuring that the welding torch is always perpendicular to the steel pipe surface, and making the welding arc pointing accurately. The two first telescopic rods are symmetrically arranged on both sides of the top of the welding machine, making the lifting force uniform, reducing the lateral load on the third electric push rod, and extending the service life of the electric push rod. The limiting function of the first telescopic rods also prevents the third electric push rod from overextending and causing the welding torch to collide with the steel pipe surface, improving the stability and safety of the lifting action of the welding mechanism.

[0015] The beneficial effects of this invention are: 1. By setting two displacement mechanisms to clamp the main body of the tower steel pipe from the left and right sides respectively, the clamping mechanism fixes the main body of the steel pipe on the gear ring. The motor drives the gear to rotate the gear ring, causing the main body of the steel pipe to rotate around its own axis, realizing the continuous rotation and displacement of the steel pipe during the welding process. The continuous welding of the entire circumferential weld can be completed without the welding worker moving the position. The first electric push rod pushes the slide and the moving rod to move laterally along the sliding hole, adjusting the distance between the two main bodies of the tower steel pipe, so that the docking ends of the two main bodies of the tower steel pipe are accurately aligned. The entire displacement process is completed automatically without manual intervention, solving the problem of high labor intensity and low production efficiency caused by the frequent movement of workers in traditional welding methods. 2. The clamping mechanism consists of four rectangular sleeves fixed to one side of the toothed ring, with rectangular rods sliding inside. The second electric push rod pushes the rectangular rods and clamping plates to move towards the center of the toothed ring. The four clamping plates simultaneously clamp the outer wall of the tower steel pipe body from four points in the circumferential direction. The four-point evenly distributed clamping method ensures that the clamping force is evenly distributed on the circumference of the steel pipe, avoiding deformation of the steel pipe or unstable clamping due to uneven clamping force. The anti-slip pad uses high friction material to increase the friction between the clamping plate and the outer wall of the steel pipe, preventing the steel pipe from circumferentially slipping due to gravity or welding torque when the toothed ring rotates. The radial position of the four clamping plates can be adjusted independently, allowing the clamping mechanism to adapt to wind power tower steel pipes of different diameters, enhancing the versatility and clamping reliability of the positioner. 3. The mounting plate is moved along the length of the machine by two second electric slide rails in the welding end support mechanism, so that the position of the support plate can be adjusted according to the position of the docking end of the two tower steel pipes. The fourth electric push rod pushes the support plate up and down so that the four first rollers contact and support the area near the docking end of the steel pipe from the bottom. The four first rollers are in rolling contact with the outer wall of the steel pipe, which provides vertical support force and allows the steel pipe to rotate freely around its own axis during the welding process. The four first rollers are divided into two groups to support the area near the docking end of the two steel pipes respectively, ensuring that the height of the steel pipes on both sides of the docking end is consistent and that the circumferential seam is accurately aligned. The second telescopic rod provides vertical guidance for the support plate to prevent skewing during the lifting and lowering process. The lifting and lowering adjustment of the support plate allows the welding end support mechanism to adapt to steel pipes of different diameters. 4. The horizontal plate in the stabilizing mechanism is fixed to the end of the machine. The fifth electric push rod pushes the V-shaped plate to rise and fall. The two second rollers at the top of the V-shaped plate contact the bottom outer wall of the corresponding tower steel pipe body from below. The V-shaped groove structure of the V-shaped plate allows the steel pipe to automatically center itself in the center of the V-shaped plate under its own weight. The two second rollers are in rolling contact with the outer wall of the steel pipe, providing auxiliary support while allowing the steel pipe to rotate freely. The stabilizing mechanism supports the steel pipe parts extending outside the machine from both the left and right ends of the machine, preventing the ends of the long steel pipe from sagging and swaying due to the weight of the suspended part during rotation, thus improving the overall stability of the steel pipe during welding. The adjustable lifting stroke of the fifth electric push rod allows the stabilizing mechanism to adapt to steel pipes of different diameters. 5. The bracket in the welding mechanism is fixed to the top of the machine to provide installation support for the first electric slide rail. The first electric slide rail drives the connecting plate to move horizontally, so that the welding machine can move along the axis of the steel pipe to the butt weld position. The third electric push rod pushes the welding machine to lift and adjust the distance between the welding torch and the surface of the steel pipe to realize the welding feed. Under the combined drive of the first electric slide rail and the third electric push rod, the welding machine can perform two-dimensional positioning in the vertical plane and accurately align the annular butt weld of the two tower steel pipe bodies. During the welding process, the toothed ring drives the steel pipe to rotate at a uniform speed. The welding machine can complete the automatic welding of the entire annular weld by keeping the fixed position. There is no need for manual hand-held welding torch to move along the annular trajectory, which improves the welding speed and the consistency of weld quality. This invention uses two displacement mechanisms to drive the main body of the tower steel pipe to rotate and move laterally automatically, realizing rapid alignment of the butt joint and continuous rotational welding of the circumferential weld. The entire weld can be automatically welded without the need for the welding worker to move. At the same time, the clamping mechanism, the weld end support mechanism and the stabilizing mechanism ensure the centering accuracy and support stability of the steel pipe during rotation, effectively reducing the labor intensity of workers and significantly improving welding production efficiency and the continuity of batch welding operations. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view of the structure according to an embodiment of this application; Figure 2 This is a three-dimensional bottom view of the structure according to an embodiment of this application; Figure 3 This is a partial three-dimensional structural diagram of an embodiment of this application; Figure 4 This is a three-dimensional structural diagram of the displacement mechanism according to an embodiment of this application; Figure 5 This is a three-dimensional exploded view of the structure of the carriage, moving rod, round hole, toothed ring, annular groove, rectangular sleeve, rectangular rod, clamping plate, anti-slip pad, second electric push rod, fixed frame, motor, gear and bearing seat according to an embodiment of this application; Figure 6 This is a three-dimensional exploded view of the structure of the carriage, moving rod, circular hole, gear ring, slider, second electric push rod, fixed frame, motor, gear and bearing seat according to an embodiment of this application; Figure 7 This is a three-dimensional structural view of the bracket, first electric slide rail, connecting plate, third electric push rod, welding machine and first telescopic rod according to an embodiment of this application. Figure 8 This is a three-dimensional structural view of the second electric slide rail, mounting plate, slide rod, fourth electric push rod, support plate, first roller shaft and second telescopic rod according to an embodiment of this application. Figure 9 This is a three-dimensional structural diagram of the horizontal plate, the fifth electric push rod, the V-shaped plate, the second roller shaft, and the third telescopic rod, according to an embodiment of this application.

[0017] In the diagram: 1. Machine base; 2. First electric push rod; 3. Slide; 4. Sliding hole; 5. Moving rod; 6. Round hole; 7. Gear ring; 8. Slider; 9. Annular groove; 10. Rectangular sleeve; 11. Rectangular rod; 12. Clamping plate; 13. Anti-slip pad; 14. Second electric push rod; 15. Fixed frame; 16. Motor; 17. Gear; 18. Bearing seat; 19. Tower steel pipe body; 20. Support; 21. First electric slide rail; 22. Connecting plate; 23. Third electric push rod; 24. Welding machine; 25. First telescopic rod; 26. Second electric slide rail; 27. Mounting plate; 28. Sliding rod; 29. ​​Fourth electric push rod; 30. Support plate; 31. First roller; 32. Second telescopic rod; 33. Horizontal plate; 34. Fifth electric push rod; 35. V-shaped plate; 36. Second roller; 37. Third telescopic rod. Detailed Implementation

[0018] The present invention will be further explained below with reference to specific embodiments.

[0019] refer to Figures 1-9 This embodiment proposes a welding positioner for wind turbine tower steel pipes, including a machine base 1 and two tower steel pipe bodies 19. The machine base 1 is equipped with two positioning mechanisms, two clamping mechanisms, a welding end support mechanism, two stabilizing mechanisms, and a welding mechanism.

[0020] Two positioning mechanisms are respectively located on the left and right sides of the machine base 1 for repositioning the two tower steel pipe bodies 19 during welding. The structure of each positioning mechanism is as follows: a first electric push rod 2 is fixedly installed at the bottom of the machine base 1, and one side of the slide 3 is fixedly installed on the output shaft of the first electric push rod 2. Two sliding holes 4 are provided on the machine base 1, and the top ends of the slide 3 pass through the two sliding holes 4 respectively, with a sliding fit between the slide 3 and the inner wall of the sliding holes 4. The front and rear sides of the moving rod 5 are fixedly installed to the top ends of the slide 3 respectively. A circular hole 6 is provided on the moving rod 5, and a gear ring 7 is rotatably connected to one side of the moving rod 5. A fixed frame 15 is fixedly installed on one side of the moving rod 5, and the top of the fixed frame 15 is fixedly installed at the bottom of the motor 16. The output shaft of the motor 16 is fixedly installed on the gear 17, and the gear 17 meshes with the gear ring 7.

[0021] Two clamping mechanisms are respectively installed on one side of the corresponding toothed ring 7, and each clamping mechanism cooperates with the corresponding tower steel pipe body 19. The clamping mechanism includes four rectangular sleeves 10, four rectangular rods 11, four clamping plates 12, four anti-slip pads 13, and four second electric push rods 14. The four rectangular sleeves 10 are fixedly installed on one side of the toothed ring 7, and the rectangular sleeves 10 are slidably sleeved on the corresponding rectangular rods 11. One side of the clamping plate 12 is fixedly installed on one end of the corresponding rectangular rod 11, the anti-slip pad 13 is fixedly installed on the other side of the corresponding clamping plate 12, and the second electric push rod 14 is fixedly installed on the corresponding rectangular sleeve 10. The output shaft of the second electric push rod 14 is fixedly installed on the corresponding rectangular rod 11. One end of the tower steel pipe body 19 passes through the circular hole 6 and the toothed ring 7 and then contacts the four anti-slip pads 13.

[0022] The welding end support mechanism is located on the top of the machine base 1 and cooperates with the two tower steel pipe bodies 19 respectively. The welding end support mechanism includes two second electric slide rails 26, a mounting plate 27, a fourth electric push rod 29, a support plate 30, four first roller shafts 31, and four second telescopic rods 32. The two second electric slide rails 26 are fixedly installed on the top of the machine base 1, and the bottom of the mounting plate 27 is slidably installed on the top of the two second electric slide rails 26 respectively. The fourth electric push rod 29 is fixedly installed on the top of the mounting plate 27, and the output shaft of the fourth electric push rod 29 is fixedly installed on the bottom of the support plate 30. The four second telescopic rods 32 are fixedly installed on the outside of the mounting plate 27, and the top ends of the four second telescopic rods 32 are fixedly installed on the bottom of the support plate 30. The four first roller shafts 31 are rotatably connected to the top of the support plate 30, and the two first roller shafts 31 on the same side are in rolling contact with the corresponding tower steel pipe body 19.

[0023] Two stabilizing mechanisms are respectively located at the left and right ends of the machine base 1, with each stabilizing mechanism cooperating with the corresponding tower steel pipe body 19. Each stabilizing mechanism includes a horizontal plate 33, a fifth electric push rod 34, a V-shaped plate 35, and two second rollers 36. One end of the horizontal plate 33 is fixedly mounted on one end of the machine base 1, the fifth electric push rod 34 is fixedly mounted on the horizontal plate 33, the bottom of the V-shaped plate 35 is fixedly mounted on the output shaft of the fifth electric push rod 34, and the two second rollers 36 are rotatably connected to the top of the V-shaped plate 35. Both second rollers 36 are in rolling contact with the corresponding tower steel pipe body 19.

[0024] The welding mechanism is located on the top of the machine base 1 and mates with the mating ends of the two tower steel pipe bodies 19. The welding mechanism includes a bracket 20, a first electric slide rail 21, a connecting plate 22, a third electric push rod 23, and a welding machine 24. The bottom end of the bracket 20 is fixedly installed on the top of the machine base 1, the first electric slide rail 21 is fixedly installed on the bottom of the bracket 20, the connecting plate 22 is slidably installed on the bottom of the first electric slide rail 21, the third electric push rod 23 is fixedly installed on the bottom of the connecting plate 22, and the welding machine 24 is fixedly installed on the output shaft of the third electric push rod 23.

[0025] An annular groove 9 is provided on one side of the moving rod 5, and four sliders 8 are fixedly installed on one side of the toothed ring 7. All four sliders 8 are slidably connected in the annular groove 9. When the motor 16 drives the gear 17 to rotate, the gear 17 drives the toothed ring 7 to rotate, and the four sliders 8 slide synchronously along the annular groove 9. The annular groove 9 provides circumferential guidance for the toothed ring 7, preventing radial runout or axial movement of the toothed ring 7 during rotation, so that the toothed ring 7 always remains coaxial with the moving rod 5.

[0026] A bearing housing 18 is fixedly installed on one side of the moving rod 5, and the bearing housing 18 is fixedly sleeved on the output shaft of the motor 16. The bearing housing 18 provides rotational support for the output shaft of the motor 16, so that the output shaft of the motor 16 maintains a horizontal posture when the drive gear 17 rotates, reduces radial runout during rotation, and ensures the meshing accuracy between the gear 17 and the gear ring 7.

[0027] Two slide rods 28 are fixedly installed at the bottom of the mounting plate 27. The bottom end of the slide rod 28 passes through the corresponding slide hole 4 and is slidably connected to the inner wall of the slide hole 4. When the second electric slide rail 26 pushes the mounting plate 27 to move along the length of the machine base 1, the slide rod 28 slides synchronously along the slide hole 4. The slide hole 4 provides a straight guide for the mounting plate 27 to prevent the mounting plate 27 from swaying or tilting during the movement.

[0028] A third telescopic rod 37 is fixedly installed on the horizontal plate 33, and the top end of the third telescopic rod 37 is fixedly installed on one side of the V-shaped plate 35. When the fifth electric push rod 34 pushes the V-shaped plate 35 to rise or fall, the third telescopic rod 37 extends or falls accordingly. The third telescopic rod 37 provides vertical guidance for the V-shaped plate 35 and prevents the V-shaped plate 35 from swaying or tilting during the rising and falling process.

[0029] Two first telescopic rods 25 are fixedly installed on the top of the welding machine 24, and the top ends of the two first telescopic rods 25 are fixedly installed on the bottom of the connecting plate 22. When the third electric push rod 23 pushes the welding machine 24 to rise and fall, the two first telescopic rods 25 extend and retract synchronously. The first telescopic rods 25 provide vertical guidance for the welding machine 24 to prevent the welding machine 24 from swaying or tilting during the rising and falling process.

[0030] It should be noted that the specific models of the first electric push rod 2, the second electric push rod 14, the motor 16, the first electric slide rail 21, the third electric push rod 23, the welding machine 24, the second electric slide rail 26, the fourth electric push rod 29, and the fifth electric push rod 34 used can be selected by those skilled in the art. Furthermore, the above-mentioned first electric push rod 2, second electric push rod 14, motor 16, first electric slide rail 21, third electric push rod 23, welding machine 24, second electric slide rail 26, fourth electric push rod 29, and fifth electric push rod 34 are all existing technologies and will not be elaborated upon in this solution. Additionally, in this application, identical drive devices are all controlled by the same synchronizer.

[0031] Working principle: In use, first connect the first electric push rod 2, the second electric push rod 14, the motor 16, the first electric slide rail 21, the third electric push rod 23, the welding machine 24, the second electric slide rail 26, the fourth electric push rod 29, and the fifth electric push rod 34 to the external power supply. Then, insert the two tower steel pipe bodies 19 from the left and right sides of the machine base 1, respectively. One end of the left tower steel pipe body 19 passes through the round hole 6 and the left toothed ring 7 on the left moving rod 5, and one end of the right tower steel pipe body 19 passes through the round hole 6 and the right toothed ring 7 on the right moving rod 5. The two clamping mechanisms clamp the two tower steel pipe bodies 19 respectively. For each clamping mechanism, four second electric push rods 14 are activated simultaneously. Each second electric push rod 14 pushes the corresponding rectangular rod 11 to slide within the rectangular sleeve 10. The rectangular rod 11 drives the clamping plate 12 to move towards the center of the toothed ring 7. The four clamping plates 12 simultaneously clamp the outer wall of the tower steel pipe body 19 from four points in the circumferential direction. The anti-slip pad 13 contacts the outer wall of the tower steel pipe body 19 and provides friction to prevent circumferential slippage of the tower steel pipe body 19 during subsequent rotation. The radial positions of the four clamping plates 12 can be adjusted independently to accommodate tower steel pipe bodies 19 with different diameters. Two displacement mechanisms perform repositioning operations on the tower steel pipe body 19 from the left and right sides respectively. The first electric push rod 2 on the left pushes the left slide 3 to move laterally along the sliding hole 4. The slide 3 drives the left moving rod 5 to move laterally, and the left moving rod 5 drives the left toothed ring 7 and the left tower steel pipe body 19 clamped on the toothed ring 7 to move laterally. The first electric push rod 2 on the right pushes the right slide 3 to move laterally along the sliding hole 4. The slide 3 drives the right moving rod 5 to move laterally, and the right moving rod 5 drives the right toothed ring 7 and the right tower steel pipe body 19 clamped on the toothed ring 7 to move laterally. Through the coordinated action of the two first electric push rods 2, the distance between the two tower steel pipe bodies 19 is adjusted, ensuring accurate alignment of the mating ends of the two tower steel pipe bodies 19. The welding end support mechanism supports the area near the joint of the two tower steel pipe bodies 19. Two second electric slide rails 26 push the mounting plate 27 along the length of the machine base 1, aligning the position of the support plate 30 with the joint of the two tower steel pipe bodies 19. A fourth electric push rod 29 pushes the support plate 30 upwards, and four first rollers 31 contact and support the area near the joint of the two tower steel pipe bodies 19 from the bottom. The four first rollers 31 are divided into two groups, each supporting the area near the joint of the two tower steel pipe bodies 19, ensuring that the height of the steel pipes on both sides of the joint remains consistent. The four first rollers 31 have rolling contact with the outer wall of the tower steel pipe body 19, providing vertical support while allowing the tower steel pipe body 19 to rotate around its own axis. A second telescopic rod 32 provides vertical guidance for the support plate 30, preventing skewing during the lifting and lowering process. Two stabilizing mechanisms support the portions of the two tower steel pipe bodies 19 extending outside the machine base 1. The fifth electric push rod 34 at the left end of the machine base 1 pushes the left-end V-shaped plate 35 upwards, and the two second rollers 36 at the top of the V-shaped plate 35 contact the bottom outer wall of the far end of the left tower steel pipe body 19 from below. The V-groove structure of the V-shaped plate 35 allows the left tower steel pipe body 19 to automatically center itself under its own weight. The two second rollers 36 make rolling contact with the outer wall of the left tower steel pipe body 19, providing auxiliary support while allowing the left tower steel pipe body 19 to rotate. The fifth electric push rod 34 at the right end of the machine base 1 pushes the right-end V-shaped plate 35 upwards, and the two second rollers 36 at the top of the V-shaped plate 35 contact the bottom outer wall of the far end of the right tower steel pipe body 19 from below, supporting the portion of the right tower steel pipe body 19 extending outside the machine base 1. The third telescopic rod 37 provides vertical guidance for the V-shaped plate 35. The welding mechanism welds the butt joints of the two tower steel pipe bodies 19. A first electric slide rail 21 drives the connecting plate 22 to move horizontally, causing the welding machine 24 to move along the axis of the tower steel pipe bodies 19 to the butt weld position. A third electric push rod 23 pushes the welding machine 24 down, adjusting the distance between the welding torch and the surface of the tower steel pipe bodies 19, aligning the welding torch with the annular butt weld of the two tower steel pipe bodies 19. Two first telescopic rods 25 provide vertical guidance for the welding machine 24. After welding begins, both motors 16 start simultaneously. Each motor 16 drives its corresponding gear 17 to rotate, which in turn drives its corresponding gear ring 7 to rotate. The gear ring 7 then drives the tower steel pipe body 19, which is clamped on the gear ring 7, to rotate around its own axis. The two tower steel pipe bodies 19 rotate synchronously under the drive of the gear ring 7. The welding machine 24 remains in a fixed position and continuously welds the rotating annular butt weld seam to complete the welding of the entire annular weld seam. During the welding process, the four sliders 8 slide along the annular groove 9, and the bearing seat 18 provides support for the output shaft of the motor 16. After welding is completed, the third electric push rod 23 drives the welding machine 24 to rise and reset, the two motors 16 stop rotating, and the four second electric push rods 14 move in the opposite direction to loosen the clamping plate 12 from the tower steel pipe body 19, and remove the two completed tower steel pipe bodies 19.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding positioner for wind turbine tower steel pipes, comprising a machine base (1) and two tower steel pipe bodies (19), characterized in that, The positioner also includes: The displacement mechanism is configured in two parts. The displacement mechanism is used for the displacement of the tower steel pipe body (19) during welding. The displacement mechanism includes: a first electric push rod (2), a slide (3), a moving rod (5), a gear ring (7), a fixed frame (15), a motor (16), and a gear (17). The first electric push rod (2) is fixedly installed at the bottom of the machine base (1). One side of the slide (3) is fixedly installed on the output shaft of the corresponding first electric push rod (2). Two sliding holes (4) are opened on the machine base (1). The top two ends of the slide (3) are respectively The two sliding holes (4) are slidably connected to the inner wall of the sliding holes (4). The front and rear sides of the moving rod (5) are fixedly installed at the top ends of the corresponding slide frame (3). The moving rod (5) has a round hole (6). The gear ring (7) is rotatably connected to one side of the moving rod (5). The fixed frame (15) is fixedly installed on one side of the moving rod (5). The top of the fixed frame (15) is fixedly installed at the bottom of the motor (16). The output shaft of the motor (16) is fixedly installed on the gear (17). The gear (17) meshes with the gear ring (7). Two clamping mechanisms are provided, each clamping mechanism having a corresponding toothed ring (7) on one side, and the clamping mechanism cooperating with the corresponding tower steel pipe body (19); Welding end support mechanism, the welding end support mechanism is set on the top of the machine base (1), and the welding end support mechanism is respectively cooperated with the two tower steel pipe bodies (19); The stabilizing mechanism is configured in two parts, which are respectively located at the left and right ends of the machine base (1) and cooperate with the corresponding tower steel pipe body (19); The welding mechanism is located on the top of the machine base (1) and is respectively connected to the docking ends of the two tower steel pipe bodies (19).

2. The welding positioner for steel pipes of wind turbine towers according to claim 1, characterized in that, The clamping mechanism includes four rectangular sleeves (10), four rectangular rods (11), four clamping plates (12), four anti-slip pads (13), and four second electric push rods (14). The four rectangular sleeves (10) are all fixedly installed on one side of the toothed ring (7). The rectangular sleeves (10) are slidably sleeved on the corresponding rectangular rods (11). One side of the clamping plate (12) is fixedly installed on one end of the corresponding rectangular rod (11). The anti-slip pads (13) are fixedly installed on the other side of the corresponding clamping plate (12). The second electric push rods (14) are fixedly installed on the corresponding rectangular sleeves (10). The output shaft of the second electric push rods (14) is fixedly installed on the corresponding rectangular rods (11). One end of the tower steel pipe body (19) passes through the round hole (6) and the toothed ring (7) respectively and contacts the four anti-slip pads (13).

3. The welding positioner for steel pipes of wind turbine towers according to claim 1, characterized in that, An annular groove (9) is provided on one side of the moving rod (5), and four sliders (8) are fixedly installed on one side of the toothed ring (7). All four sliders (8) are slidably connected in the annular groove (9).

4. The welding positioner for wind turbine tower steel pipes according to claim 1, characterized in that, A bearing seat (18) is fixedly installed on one side of the moving rod (5), and the bearing seat (18) is fixedly sleeved on the output shaft of the motor (16).

5. A welding positioner for steel pipes of wind turbine towers according to claim 1, characterized in that, The welding end support mechanism includes two second electric slide rails (26), a mounting plate (27), a fourth electric push rod (29), a support plate (30), four first roller shafts (31), and four second telescopic rods (32). The two second electric slide rails (26) are fixedly installed on the top of the machine base (1). The bottom of the mounting plate (27) is slidably installed on the top of the two second electric slide rails (26). The fourth electric push rod (29) is fixedly installed on the top of the mounting plate (27). The output shaft of the fourth electric push rod (29) is fixedly installed on the bottom of the support plate (30). The four second telescopic rods (32) are fixedly installed on the outside of the mounting plate (27). The top of the four second telescopic rods (32) is fixedly installed on the bottom of the support plate (30). The four first roller shafts (31) are rotatably connected to the top of the support plate (30). The two first roller shafts (31) on the same side are in rolling contact with the corresponding tower steel pipe body (19).

6. A welding positioner for steel pipes of wind turbine towers according to claim 5, characterized in that, Two slide rods (28) are fixedly installed at the bottom of the mounting plate (27). The bottom end of the slide rod (28) passes through the corresponding slide hole (4) and is slidably connected to the inner wall of the slide hole (4).

7. A welding positioner for steel pipes of wind turbine towers according to claim 1, characterized in that, The stabilizing mechanism includes a horizontal plate (33), a fifth electric push rod (34), a V-shaped plate (35), and two second rollers (36). One end of the horizontal plate (33) is fixedly installed on one end of the machine base (1). The fifth electric push rod (34) is fixedly installed on the horizontal plate (33). The bottom of the V-shaped plate (35) is fixedly installed on the output shaft of the fifth electric push rod (34). The two second rollers (36) are rotatably connected to the top of the V-shaped plate (35). The two second rollers (36) are in rolling contact with the corresponding tower steel pipe body (19).

8. A welding positioner for steel pipes of wind turbine towers according to claim 7, characterized in that, A third telescopic rod (37) is fixedly installed on the horizontal plate (33), and the top end of the third telescopic rod (37) is fixedly installed on one side of the V-shaped plate (35).

9. A welding positioner for steel pipes of wind turbine towers according to claim 1, characterized in that, The welding mechanism includes a bracket (20), a first electric slide rail (21), a connecting plate (22), a third electric push rod (23), and a welding machine (24). The bottom end of the bracket (20) is fixedly installed on the top of the machine base (1). The first electric slide rail (21) is fixedly installed on the bottom of the bracket (20). The connecting plate (22) is slidably installed on the bottom of the first electric slide rail (21). The third electric push rod (23) is fixedly installed on the bottom of the connecting plate (22). The welding machine (24) is fixedly installed on the output shaft of the third electric push rod (23).

10. A welding positioner for steel pipes of wind turbine towers according to claim 9, characterized in that, The welding machine (24) has two first telescopic rods (25) fixedly installed on its top, and the top ends of the two first telescopic rods (25) are fixedly installed on the bottom of the connecting plate (22).

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