Large wind power component numerical control welding integrated intelligent positioning and adjusting equipment

Abstract

The application belongs to the technical field of numerical control welding, and particularly relates to large wind power component numerical control welding integrated intelligent positioning and adjusting equipment, which comprises a welding tool; two symmetrical slide rails are fixedly arranged on the top of the welding tool, two slide seats are respectively slidably connected to each slide rail, a first adapter seat is fixedly arranged on the top of each slide seat, and a roller is rotatably arranged between two first adapter seats on the same side and between two first adapter seats on the same side. In the application, the hand-crank drives the mutual reverse double-threaded shaft to cooperate with the threaded cylinder, so that the distance between the two rollers is steplessly and accurately adjusted, the pipe to be welded with different sizes can be quickly adapted, the operation is convenient, the adjusting efficiency is high, the lower pressing roller is combined with the synchronous and same-direction rotation of the two rollers to form three-point positioning support, the force balance of the pipe during the rotary welding process is ensured, the deflection, slipping and torsional stress are effectively avoided, and the welding seam forming quality is obviously improved.

Description

Technical Field

[0001] This invention belongs to the field of CNC welding technology, specifically to an integrated intelligent positioning and adjustment equipment for CNC welding of large wind power components. Background Technology

[0002] Pipes and welding in large wind turbine components are the backbone and joints that ensure the long-term safe operation of wind turbines. Pipes mainly refer to the towers that serve as the supporting backbone and the key flanges that connect various sections. The towers are made of thick steel plates rolled and welded, and a single tower can weigh up to 450 tons. The flanges are large precision ring forgings that bear huge alternating loads. Welding is the core process that connects these behemoths. Every tower weld must be tested for defects through non-destructive testing such as ultrasonic flaw detection. For the ultra-thick plate welding of offshore wind power, it is necessary to precisely control preheating and heat input, and gradually apply cutting-edge technologies such as laser-arc composite welding to improve the fatigue strength of joints. In addition, on-site assembly welding must ensure quality in complex outdoor environments, supplemented by intelligent monitoring to track weld stress. The precision manufacturing of pipes and the stringent welding process together constitute the cornerstone of the safety and reliability of large wind power equipment.

[0003] In the CNC welding of large wind power components, the engineering adaptability of existing positioning and adjustment equipment is still insufficient. Specifically, the roller frame system on which pipe welding depends suffers from uneven torque attenuation due to mechanical friction and energy dissipation during the torque transmission from the power source to the double rollers. This transmission asymmetry directly disrupts the consistency of the double roller rotation, making the pipe susceptible to torsional stress interference during the welding process and making it difficult to meet the process requirements of high-precision butt welding.

[0004] Based on this, the present invention designs an integrated intelligent positioning and adjustment equipment for CNC welding of large wind power components to solve the above problems. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes an integrated intelligent positioning and adjustment equipment for CNC welding of large wind turbine components. This invention primarily addresses the insufficient engineering adaptability of existing positioning and adjustment equipment in CNC welding operations of large wind turbine components. Specifically, the roller frame system relied upon for pipe welding suffers from uneven torque attenuation due to mechanical friction and energy dissipation during torque transmission from the power source to the double-sided rollers. This transmission asymmetry directly disrupts the consistency of the double roller rotation, making the pipe components susceptible to torsional stress interference during welding and failing to meet the process requirements of high-precision butt welding.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a large wind power component CNC welding integrated intelligent positioning and adjustment equipment, including a welding fixture; the welding fixture has symmetrically fixed slide rails on both sides of its top, and two slide seats are slidably connected on each slide rail, and a first adapter seat is fixedly installed on the top of each slide seat. Rollers are rotatably supported between the two first adapter seats on the same front side and between the two first adapter seats on the same rear side, and a pressure roller is straddling the top of the two rollers. The welding fixture is also equipped with a lifting component for adjusting the vertical distance between the pressure roller and the two rollers. Each of the rollers is fixedly connected to a right-angle shaft at both ends of its axial direction. Each right-angle shaft has a clamping groove at the end away from the corresponding roller. A rolling ball is embedded in each clamping groove. A collar is sleeved around the periphery of each right-angle shaft. A second annular groove is correspondingly opened on the inner ring surface of each collar. Each rolling ball is limited to rolling within the corresponding second annular groove. Orientation components are provided between the two sets of collars on the right side and between the two sets of collars on the left side to constrain the relative movement direction of the two collars on the same side.

[0007] Preferably, the orientation component includes two bridging plates, with the ends of the two bridging plates respectively fixedly connected to two corresponding collars. The two bridging plates have corresponding second telescopic grooves on their opposite sides. An inner liner is slidably fitted in the two second telescopic grooves. An orientation shaft is fixedly connected to the bottom of the inner liner. The bottom end of the orientation shaft is slidably fitted into the orientation sleeve, and the bottom of the orientation sleeve is fixedly assembled on the welding fixture.

[0008] Preferably, a U-shaped frame is fixedly connected between the two first adapter seats on the same front side and between the two first adapter seats on the same rear side. A threaded cylinder is fixedly provided on the top inner side of each U-shaped frame. A first threaded shaft and a second threaded shaft are respectively connected in a threaded engagement manner in the two threaded cylinders, and the thread directions of the first threaded shaft and the second threaded shaft are opposite to each other. The ends of the first threaded shaft and the second threaded shaft that are close to each other are fixedly connected as one unit, and the ends of the first threaded shaft and the second threaded shaft that are far from each other are respectively rotatably supported on the welding fixture. A hand crank is fixedly sleeved on the end of the first threaded shaft that is far from the second threaded shaft.

[0009] Preferably, each of the clamp grooves has a lubrication groove on its inner sidewall, and a spring is fixedly connected to the inner sidewall of each lubrication groove. The free end of the spring elastically abuts against the outer surface of the corresponding rolling ball.

[0010] Preferably, each of the rollers has a first annular groove on its circumferential surface, and each roller is fixedly fitted with a worm gear corresponding to the first annular groove. A worm is meshed with both worm gears, and two second adapter seats are rotatably connected to the worm. The bottom of the two second adapter seats is fixedly connected to the top of the two U-shaped frames.

[0011] Preferably, a drive shaft is rotatably supported on the welding fixture. One end of the drive shaft is fixedly connected to the output shaft of a geared motor fixedly installed on the welding fixture. The other end of the drive shaft is provided with a first telescopic groove. A keyway is provided on the inner side wall of the first telescopic groove. The end of the worm is slidably inserted into the first telescopic groove, and the end of the worm is provided with a spline. The worm is slidably engaged with the keyway through the spline.

[0012] Preferably, a gear is fixedly sleeved at the other end of the worm gear, and a toothed plate is meshed on the tooth surface of the gear. A second hydraulic cylinder is fixedly installed on the top of one of the U-shaped frames, and the toothed plate is fixedly connected to the telescopic end of the second hydraulic cylinder. The driving torque generated by the second hydraulic cylinder driving the gear to rotate through the toothed plate is less than the driving torque output by the geared motor.

[0013] Preferably, a bend bracket is fixedly connected to each of the directional shafts, and a first hydraulic cylinder is fixedly installed on the welding fixture at the corresponding directional shaft. The end of each bend bracket away from the corresponding directional shaft is fixedly connected to the telescopic end of the corresponding first hydraulic cylinder. The rated output thrust of the first hydraulic cylinder is less than the rated output thrust of the second hydraulic cylinder.

[0014] The beneficial effects of this invention are as follows: 1. In this invention, a hand crank drives a reciprocating double-threaded shaft to cooperate with a threaded cylinder, achieving stepless and precise adjustment of the distance between the two rollers. This allows for quick adaptation to pipe fittings of different diameters to be welded. The operation is convenient and the adjustment efficiency is high. The pressure roller presses down in conjunction with the synchronous rotation of the two rollers in the same direction, forming a three-point positioning support. This ensures that the pipe fitting is subjected to balanced force during the rotational welding process, effectively avoiding swaying, slippage, and torsional stress, and significantly improving the weld formation quality.

[0015] 2. In this invention, the rolling engagement of the ball bearing and the second annular groove replaces sliding friction, significantly reducing transmission resistance and wear, extending equipment life, and eliminating backlash through the elastic spring push, automatically compensating for wear, ensuring the accuracy of rotary motion and the regularity of the ring lifting and lowering, resulting in smooth and quiet operation.

[0016] 3. In this invention, the worm gear slides through the spline and keyway to achieve axial extension and retraction during pitch adjustment, while maintaining continuous torque transmission, thus achieving synergistic compatibility between adjustment and drive. The single worm gear and double worm wheel structure ensures synchronous drive of the two rollers and eliminates the problem of off-center load.

[0017] 4. In this invention, the second hydraulic cylinder drives the gear plate-gear to apply an auxiliary torque in the same direction, which effectively shares the transmission load, reduces the sliding friction of the worm gear tooth surface, significantly reduces the wear rate, and the auxiliary torque is less than the main driving torque, ensuring no interference and guaranteeing long-term transmission stability.

[0018] 5. In this invention, the first hydraulic cylinder moves synchronously with the directional shaft, and its rated thrust is less than that of the second hydraulic cylinder. This avoids reverse interference to the extension and retraction of the worm gear and the movement of the gear plate and gears, forming graded load protection to prevent damage to precision mating parts. At the same time, it reduces energy consumption and system heat generation, simplifies control logic, and improves system reliability and maintainability. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top-view schematic diagram of the planar structure of the present invention; Figure 3 This is a side view of the planar structure of the present invention; Figure 4 This is a schematic diagram of the planar structure of the present invention in cross-section; Figure 5 This is a three-dimensional structural diagram of the directional sleeve in this invention, viewed in cross-section. Figure 6 This is a schematic diagram of the orientation component in this invention; Figure 7 This is a three-dimensional structural diagram of the worm gear in this invention, viewed in cross-section. Figure 8 This is the present invention. Figure 4 A magnified structural diagram of the middle section; Figure 9 This is the present invention. Figure 5 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Welding fixture; 2. Slide rail; 3. Slide block; 4. Threaded cylinder; 5. First threaded shaft; 6. Hand crank; 7. Second threaded shaft; 8. Roller; 9. First annular groove; 10. Worm gear; 11. Worm; 12. Second adapter seat; 13. Drive shaft; 14. First telescopic groove; 15. Keyway; 16. Spline; 17. Gear motor; 18. Right-angle shaft; 19. Clamp groove; 20. Ball bearing; 21. Collar; 22. Second annular groove; 23. Bridge plate; 24. Second telescopic groove; 25. Inner liner; 26. Directional shaft; 27. Directional sleeve; 28. First hydraulic cylinder; 29. ​​Bend frame; 30. Gear; 31. Gear plate; 32. Second hydraulic cylinder; 33. Lubrication groove; 34. Spring; 35. Pressure roller; 36. Lifting assembly; 37. First adapter seat; 38. U-shaped frame. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 9 As shown, the large wind power component CNC welding integrated intelligent positioning and adjustment equipment includes a welding fixture 1; the top of the welding fixture 1 is symmetrically fixed with slide rails 2 on both sides, and two slide seats 3 are slidably connected on each slide rail 2, and a first adapter seat 37 is fixedly installed on the top of each slide seat 3. Rollers 8 are rotatably supported between the two first adapter seats 37 on the front side of the same side and between the two first adapter seats 37 on the rear side of the same side. A pressure roller 35 is straddling the top of the two rollers 8. The welding fixture 1 is also equipped with a lifting component 36 for adjusting the vertical distance between the pressure roller 35 and the two rollers 8. Each roller 8 is fixedly connected to a right-angle shaft 18 at both ends of its axial direction. Each right-angle shaft 18 has a clamping groove 19 at the end away from the corresponding roller 8. Each clamping groove 19 is fitted with a rolling ball 20. Each right-angle shaft 18 is fitted with a collar 21 on its outer periphery. Each collar 21 has a corresponding second annular groove 22 on its inner ring surface. Each rolling ball 20 is limited to rolling within the corresponding second annular groove 22. Orientation components are provided between the two sets of collars 21 on the right side and between the two sets of collars 21 on the left side to constrain the relative movement direction of the two collars 21 on the same side. The directional assembly includes two bridging plates 23. The ends of the two bridging plates 23 that are far apart from each other are fixedly connected to two corresponding collars 21. The two bridging plates 23 are provided with second telescopic grooves 24 on their opposite sides. An inner liner 25 is slidably fitted in the two second telescopic grooves 24. A directional shaft 26 is fixedly connected to the bottom of the inner liner 25. The bottom end of the directional shaft 26 is slidably fitted in the directional sleeve 27, and the bottom of the directional sleeve 27 is fixedly assembled on the welding fixture 1. A U-shaped frame 38 is fixedly connected between the two first adapter seats 37 located on the front side of the same side and between the two first adapter seats 37 located on the rear side of the same side. A threaded cylinder 4 is fixedly installed on the top inner side of each U-shaped frame 38. A first threaded shaft 5 and a second threaded shaft 7 are respectively connected in a threaded manner inside the two threaded cylinders 4, and the thread directions of the first threaded shaft 5 and the second threaded shaft 7 are opposite to each other. The first threaded shaft 5 and the second threaded shaft 7 are fixedly connected at their close ends to each other, and the ends of the first threaded shaft 5 and the second threaded shaft 7 are rotatably supported on the welding fixture 1 respectively. A hand crank 6 is fixedly sleeved on the end of the first threaded shaft 5 away from the second threaded shaft 7.

[0024] This embodiment is specifically as follows: The distance between the two rollers 8 is adjusted according to the size of the pipe to be welded. By cranking the hand crank 6, the first threaded shaft 5 rotates within the corresponding threaded cylinder 4. The first threaded shaft 5 transmits torque to the second threaded shaft 7, causing the second threaded shaft 7 to rotate within the other threaded cylinder 4. The two threaded cylinders 4 move synchronously under the combined drive of the first threaded shaft 5 and the second threaded shaft 7, moving closer or further apart, and applying thrust or pull to the two connected U-shaped frames 38. The two U-shaped frames 38 respectively drive the connected adapter seats. The rollers 8 inside the two adapter seats on the same front side and the two adapter seats on the same rear side respectively move closer or further apart. When the diameter of the pipe to be welded is relatively small... When the diameter of the pipe to be welded is large, the distance between the two rollers 8 is increased; when the diameter of the pipe to be welded is small, the distance between the two rollers 8 is decreased. After the distance between the two rollers 8 is adjusted, the two pipes are placed between the two rollers 8 and the docking operation is completed. Then, the lifting assembly 36 is controlled to drive the pressure roller 35 downward, applying downward pressure to the two pipes, so that the two rollers 8 rotate synchronously and in the same direction, thereby driving the two pipes in the docking state to rotate. The two pipes are welded during the rotation. When the two rollers 8 rotate, they drive the right-angle shafts 18 connected to their ends respectively. Each right-angle shaft 18 moves in a circular motion in the corresponding second annular groove 22 through the rolling balls 20 in the clamp groove 19 opened at its end. The right-angle shaft 18 moves in a circular motion in the second annular groove 22 through the rolling balls 20. During the first half of the cycle, an upward thrust is continuously applied to the collar 21, and a downward thrust is continuously applied to the collar 21 during the second half of the cycle. The two collars 21 on the left and the two collars 21 on the right move synchronously up and down. Through the inner lining 25 in the two bridge plates 23 connecting them, the bottom-connected directional shaft 26 moves accordingly within the directional sleeve 27, thus ensuring the consistency of the rotation process of the two rollers 8. By using the hand crank 6 to drive the reciprocating first threaded shaft 5 and second threaded shaft 7 in conjunction with the threaded cylinder 4, the precise stepless adjustment of the distance between the two rollers 8 can be achieved. This can adapt to various sizes of pipe fittings to be welded, is easy to operate, and has high adjustment efficiency. The pressure roller 35 presses down in conjunction with the synchronous rotation of the two rollers 8 in the same direction, forming a three-point positioning support to ensure During the rotary welding process, the pipe fittings are subjected to balanced forces, avoiding swaying or slippage, and effectively improving the welding quality. The rolling engagement of the rolling ball 20 and the second annular groove 22 replaces the sliding friction, significantly reducing transmission resistance and wear, extending the service life of the equipment, and ensuring the smoothness of the rotational motion. Each time the rolling ball 20 rolls in the annular groove, it generates periodic alternating thrust and pull, driving the collar 21 to make regular lifting and lowering movements. With the limit guidance of the directional component, synchronous motion compensation is achieved at both ends of the roller 8. Through the telescopic linkage between the inner liner 25 and the directional shaft 26, the height of the lifting and lowering movements of the collars 21 on both sides is ensured to be synchronized, thereby ensuring that the angular velocities of the two rollers 8 are consistent during rotation, avoiding torsional stress in the pipe fittings during welding, and improving the weld formation quality.

[0025] Specifically, each clamp groove 19 has a lubrication groove 33 on its inner sidewall, and a spring 34 is fixedly connected to the inner sidewall of each lubrication groove 33. The free end of the spring 34 elastically abuts against the outside of the spherical surface of the corresponding rolling ball 20.

[0026] In this embodiment, as the right-angle shaft 18 rolls within the corresponding second annular groove 22 via the ball bearings 20 nested at its end, the grease filling the lubrication groove 33 continuously lubricates the spherical surface of the ball bearings 20. Simultaneously, because the ball bearings 20 are constantly subjected to the elastic support thrust from the spring 34, they remain attached to the inner wall of the second annular groove 22 under the pushing action of the spring 34. The continuous lubrication of the grease, combined with the elastic pushing action of the spring 34, ensures that the ball bearings 20 are both adequately lubricated and continuously pressed against the inner wall of the second annular groove 22 during rolling. These two actions complement each other, effectively reducing frictional resistance while ensuring the continuity of rolling contact. The elastic thrust of the spring 34 forces the ball bearings 20 to remain attached to the inner wall of the second annular groove 22. This eliminates the clearance between the rolling ball 20 and the second annular groove 22, avoiding impacts and vibrations caused by the clearance, and significantly improving the motion accuracy of the rotary transmission. When the rolling ball 20 or the inner wall of the second annular groove 22 experiences slight wear, the spring 34 can automatically release the elastic deformation to compensate, always maintaining close contact between the rolling ball 20 and the inner wall, extending the maintenance cycle and service life. The rolling ball 20 rolls close to the inner wall of the second annular groove 22, ensuring that the amplitude and phase of the periodic thrust and pull generated by the right-angle shaft 18 remain stable for each rotation, thereby ensuring the regularity and repeatability of the lifting and lowering motion of the collar 21. The dual effect of the grease and the elasticity of the spring 34 reduces the noise of metal rolling friction and buffers the instantaneous impact during the rolling process, making the equipment run more smoothly and quietly.

[0027] Specifically, each roller 8 has a first annular groove 9 on its circumferential surface. Each roller 8 is fixedly fitted with a worm gear 10 at the first annular groove 9. A worm 11 is meshed with both worm gears 10. Two second adapter seats 12 are rotatably connected to the worm 11. The bottoms of the two second adapter seats 12 are fixedly connected to the tops of the two U-shaped frames 38. A drive shaft 13 is rotatably supported on the welding fixture 1. One end of the drive shaft 13 is fixedly connected to the output shaft of the geared motor 17 fixedly installed on the welding fixture 1. The other end of the drive shaft 13 is provided with a first telescopic groove 14. A keyway 15 is provided on the inner side wall of the first telescopic groove 14. The end of the worm gear 11 is slidably inserted into the first telescopic groove 14, and the end of the worm gear 11 is provided with a spline 16. The worm gear 11 is slidably engaged with the keyway 15 through the spline 16. A gear 30 is fixedly sleeved at the other end of the worm gear 11. A toothed plate 31 is meshed on the tooth surface of the gear 30. A second hydraulic cylinder 32 is fixedly installed on the top of one of the U-shaped frames 38. The toothed plate 31 is fixedly connected to the telescopic end of the second hydraulic cylinder 32. The driving torque generated by the second hydraulic cylinder 32 driving the gear 30 to rotate through the toothed plate 31 is less than the driving torque output by the geared motor 17.

[0028] Specifically, in this embodiment, during the adjustment of the distance between the two rollers 8, the two U-shaped frames 38 apply pushing or pulling forces to the worm 11 through the two second adapter seats 12, causing the worm 11 to perform corresponding telescopic movements within the keyway 15 and the first telescopic groove 14 via the spline 16. This controls the operation of the reduction motor 17, and the output shaft of the reduction motor 17 drives the transmission shaft 13 to rotate. The transmission shaft 13 transmits torque to the worm 11 through the cooperation of the keyway 15 and the spline 16, causing the worm 11 to simultaneously drive the two worm wheels 10 to rotate. During the rotation of the two worm wheels 10, they respectively drive the two rollers 8 to rotate. During the above process, the second adapter seats 12 are controlled to rotate. Hydraulic cylinder 32 extends and retracts according to the direction of rotation of worm 11. The extension and retraction end of the second hydraulic cylinder 32 applies a pushing or pulling force to the gear plate 31, which drives gear 30 to rotate. The direction of rotation of gear 30 is consistent with that of worm 11. The driving torque generated by the second hydraulic cylinder 32 driving gear 30 to rotate through gear plate 31 is less than the driving torque output by reduction motor 17, in order to reduce wear between worm wheel 10 and worm 11 and ensure the stability of worm wheel 10 and worm 11 transmission pair in long-term use. Worm 11 slides through spline 16 and keyway 15, driven by U-shaped frame 38. The lower part can freely extend and retract along the axial direction, which not only ensures the adaptability of the transmission path when adjusting the gap of the rollers 8, but also ensures that the torque transmission is uninterrupted, realizing the synergistic compatibility of adjustment and drive. The structural design of a single worm 11 simultaneously meshing with two worm wheels 10 ensures that the two rollers 8 always obtain the same driving force and speed in any working state, fundamentally eliminating the problem of pipe twisting or uneven load caused by asynchronous drive. The second hydraulic cylinder 32 drives the toothed plate 31 and gear 30 to apply the same direction auxiliary torque to the worm 11, which shares part of the transmission load on the basis of the active output of the reduction motor 17, effectively reducing the load on the worm wheel 10 and worm 11. The relative sliding friction between the tooth surfaces significantly reduces the tooth surface wear rate. The driving torque output by the second hydraulic cylinder 32 is limited to be less than the output torque of the geared motor 17, ensuring that the auxiliary torque only plays a follow-up assist role and does not interfere with or impact the main transmission. This not only extends the service life of the worm gear 10 and worm 11, but also ensures the transmission stability during long-term operation. The second hydraulic cylinder 32 makes corresponding extension and retraction movements according to the direction of the worm 11, indicating that there is a clear follow-up control strategy between the two, so that the auxiliary assist is always consistent with the direction of the main transmission, avoiding the generation of reverse load, and improving the control accuracy and reliability of the entire transmission system.

[0029] Specifically, a bend bracket 29 is fixedly connected to each directional shaft 26, and a first hydraulic cylinder 28 is fixedly installed on the welding fixture 1 at the corresponding directional shaft 26. The end of each bend bracket 29 away from the corresponding directional shaft 26 is fixedly connected to the telescopic end of the corresponding first hydraulic cylinder 28. The rated output thrust of the first hydraulic cylinder 28 is less than the rated output thrust of the second hydraulic cylinder 32.

[0030] Specifically, in this embodiment, during the corresponding telescopic movement of the directional shaft 26 within the directional sleeve 27, the first hydraulic cylinder 28 synchronously performs a corresponding telescopic movement. That is, the directional shaft 26 and the first hydraulic cylinder 28 maintain consistency in their telescopic direction and stroke, or a linked following relationship. The rated output thrust of the first hydraulic cylinder 28 is less than the rated output thrust of the second hydraulic cylinder 32. The first hydraulic cylinder 28 and the directional shaft 26 maintain synchronous telescopic movement. The first hydraulic cylinder 28 only provides follow-up without generating additional resistance or interference, ensuring smooth telescopic movement of the directional shaft 26 within the directional sleeve 27 and avoiding motion jamming or stiffness caused by rigid connections. This ensures the sensitive response of the directional assembly. The rated output thrust of the first hydraulic cylinder 28 is less than the rated output thrust of the second hydraulic cylinder 32, effectively preventing the first hydraulic cylinder 28 from affecting the axial telescopic movement of the worm gear 11 and the second hydraulic cylinder. The action of the toothed plate 31-gear 30 driven by 32 generates reverse interference, forming a graded load protection mechanism under complex working conditions of multiple actuator linkage. The smaller rated thrust of the first hydraulic cylinder 28 allows it to play only an auxiliary support role during the following extension and retraction process, without forcibly constraining the extension and retraction of the directional shaft 26 and worm gear 11 due to excessive output force. This avoids damage to precision mating parts such as spline 16 and keyway 15 due to force cascade transmission. The first hydraulic cylinder 28 uses a smaller rated thrust, which consumes less energy during the following motion, while also reducing the heat generation of the hydraulic system and improving the overall energy efficiency of the system. Through the tiered configuration of rated thrust, the first hydraulic cylinder 28 is smaller than the second hydraulic cylinder 32, and the second hydraulic cylinder 32 is smaller than the geared motor 17, so that the control logic of each actuator is decoupled, simplifying the design difficulty of the control strategy and enhancing the reliability and maintainability of the system.

[0031] During operation, the distance between the two rollers 8 is adjusted according to the size of the pipe to be welded. The hand crank 6 is turned, causing the first threaded shaft 5 to rotate within the corresponding threaded cylinder 4. The first threaded shaft 5 transmits torque to the second threaded shaft 7, driving the second threaded shaft 7 to rotate within the other threaded cylinder 4. The two threaded cylinders 4 move synchronously under the combined drive of the first threaded shaft 5 and the second threaded shaft 7, moving closer or further apart, and applying thrust or pull force to the two connected U-shaped frames 38. The two U-shaped frames 38 respectively drive the connected adapter seats between the two adapter seats located on the same front side. The rollers 8 on the inner sides of the two adapter seats located on the same side and the rear side are driven to move closer or further apart. When the diameter of the pipe to be welded is large, the distance between the two rollers 8 is increased. When the diameter of the pipe to be welded is small, the distance between the two rollers 8 is decreased. After the distance is adjusted, the two pipes are placed between the two rollers 8 and the docking operation is completed. Then, the lifting assembly 36 is controlled to drive the pressure roller 35 downward to apply downward pressure to the two pipes, so that the two rollers 8 rotate synchronously and in the same direction, thereby driving the two pipes in the docking state to rotate. The two pipes are welded during the rotation process. When the two rollers 8 rotate, they drive the right-angle shafts 18 connected to their ends. Each right-angle shaft 18 moves in a circular motion in the corresponding second annular groove 22 through the rolling balls 20 in the clamp groove 19 opened at its end. Each time the right-angle shaft 18 rolls in the second annular groove 22, it continuously applies an upward thrust to the collar 21 in the first half of the cycle and a downward thrust to the collar 21 in the second half of the cycle. The two collars 21 on the left and the two collars 21 on the right move up and down synchronously. Through the inner lining 25 in the two bridge plates 23 connected between them, the bottom-connected directional shaft 26 moves in a corresponding telescopic motion in the directional sleeve 27, which helps to ensure the consistency of the rotation process of the two rollers 8. By using a hand crank 6 to drive the reciprocating first threaded shaft 5 and second threaded shaft 7 in conjunction with the threaded cylinder 4, the precise stepless adjustment of the distance between the two rollers 8 can be achieved. This is suitable for various pipe fittings of different diameters, and is easy to operate with high adjustment efficiency. The pressure roller 35 presses down and rotates the two rollers 8 synchronously in the same direction, forming a three-point positioning support to ensure that the pipe fitting is subjected to balanced force during rotational welding, avoiding swaying or slippage, and effectively improving welding quality. The rolling engagement of the rolling ball 20 and the second annular groove 22 replaces sliding friction, which greatly reduces transmission resistance and wear, extends the service life of the equipment, and ensures the smoothness of the rotational motion. Each time the rolling ball 20 rolls in the annular groove, it generates periodic alternating thrust and pull, driving the collar 21 to make regular lifting and lowering movements. With the limit guidance of the directional component, synchronous movement compensation is achieved at both ends of the roller 8. Through the telescopic linkage between the inner liner 25 and the directional shaft 26, the height of the lifting and lowering movements of the collars 21 on both sides is ensured to be synchronized, thereby ensuring that the angular velocity of the two rollers 8 is consistent during rotation, avoiding torsional stress in the pipe fitting during welding, and improving the weld formation quality. As the right-angle shaft 18 rolls within the corresponding second annular groove 22 via the ball bearings 20 nested at its ends, the grease filling the lubrication groove 33 continuously lubricates the spherical surface of the ball bearings 20. Simultaneously, because the ball bearings 20 are constantly subjected to the elastic support thrust from the spring 34, they remain attached to the inner wall of the second annular groove 22 under the pushing action of the spring 34. The continuous lubrication of the grease, combined with the elastic pushing action of the spring 34, ensures that the ball bearings 20 are both adequately lubricated and continuously pressed against the inner wall of the second annular groove 22 during rolling. These two actions complement each other, effectively reducing frictional resistance while ensuring the continuity of rolling contact. The elastic thrust of the spring 34 forces the ball bearings 20 to remain attached to the inner wall of the second annular groove 22, eliminating the rolling... The clearance between the moving ball 20 and the second annular groove 22 avoids impact and vibration caused by the clearance, significantly improving the motion accuracy of the rotary transmission. When the rolling ball 20 or the inner wall of the second annular groove 22 is slightly worn, the spring 34 can automatically release the elastic deformation to compensate, always maintaining the tight contact between the rolling ball 20 and the inner wall, extending the maintenance cycle and service life. The rolling ball 20 rolls close to the inner wall of the second annular groove 22, ensuring that the amplitude and phase of the periodic thrust and pull generated by the right-angle shaft 18 for each rotation remain stable, thereby ensuring the regularity and repeatability of the lifting and lowering motion of the collar 21. The dual effect of the grease and the elasticity of the spring 34 reduces the noise of metal rolling friction and buffers the instantaneous impact during the rolling process, making the equipment run more smoothly and quietly. During the adjustment of the distance between the two rollers 8, the two U-shaped frames 38 apply pushing or pulling forces to the worm 11 through the two second adapter seats 12, causing the worm 11 to perform corresponding telescopic movements within the keyway 15 and the first telescopic groove 14 via the spline 16. This controls the operation of the reduction motor 17, whose output shaft drives the transmission shaft 13 to rotate. The transmission shaft 13 transmits torque to the worm 11 through the cooperation of the keyway 15 and the spline 16, causing the worm 11 to simultaneously drive the two worm wheels 10 to rotate. During their rotation, the two worm wheels 10 respectively drive the two rollers 8 to rotate. During the above process, the second hydraulic cylinder 32 is controlled to perform corresponding extension and retraction movements according to the direction of the worm 11. The extension and retraction end of the second hydraulic cylinder 32 applies a pushing or pulling force to the gear plate 31, and the gear plate 31 drives the gear 30 to rotate. The direction of the gear 30 is consistent with the direction of the worm 11. The driving torque generated by the second hydraulic cylinder 32 driving the gear 30 to rotate through the gear plate 31 is less than the driving torque output by the reduction motor 17, so as to reduce the wear between the worm wheel 10 and the worm 11 and ensure the stability of the worm wheel 10 and worm 11 transmission pair in long-term use. The worm gear 11, through the sliding engagement of the spline 16 and the keyway 15, can freely extend and retract axially under the drive of the U-shaped frame 38. This ensures both the adaptability of the transmission path during roller spacing adjustment and uninterrupted torque transmission, achieving synergistic compatibility between adjustment and drive. The structural design of a single worm gear 11 simultaneously meshing with two worm wheels 10 ensures that the two rollers 8 always obtain the same driving force and speed under any working state, fundamentally eliminating the problem of pipe twisting or uneven load caused by asynchronous drive. The second hydraulic cylinder 32 drives the toothed plate 31 and gear 30 to apply an auxiliary torque in the same direction to the worm gear 11, sharing part of the transmission load on the basis of the active output of the reduction motor 17. The auxiliary torque effectively reduces the relative sliding friction between the tooth surfaces of the worm gear 10 and the worm 11, significantly reducing the tooth surface wear rate. The driving torque output by the second hydraulic cylinder 32 is limited to be less than the output torque of the geared motor 17, ensuring that the auxiliary torque only plays a follow-up assist role and does not interfere with or impact the main transmission. This not only extends the service life of the worm gear 10 and the worm 11, but also ensures the transmission stability during long-term operation. The second hydraulic cylinder 32 makes corresponding extension and retraction movements according to the direction of the worm 11, indicating that there is a clear follow-up control strategy between the two, so that the auxiliary assist is always consistent with the direction of the main transmission, avoiding the generation of reverse load, and improving the control accuracy and reliability of the entire transmission system. During the corresponding telescopic movement of the directional shaft 26 within the directional sleeve 27, the first hydraulic cylinder 28 synchronously performs a corresponding telescopic movement. That is, the directional shaft 26 and the first hydraulic cylinder 28 maintain consistency in their telescopic direction and stroke, or a linked following relationship. The rated output thrust of the first hydraulic cylinder 28 is less than the rated output thrust of the second hydraulic cylinder 32. The first hydraulic cylinder 28 and the directional shaft 26 maintain synchronous telescopic movement. The first hydraulic cylinder 28 only provides follow-up without generating additional resistance or interference, ensuring smooth telescopic movement of the directional shaft 26 within the directional sleeve 27 and avoiding motion jamming or stiffness caused by rigid connections. This ensures the sensitive response of the directional assembly. The rated output thrust of the first hydraulic cylinder 28 is less than the rated output thrust of the second hydraulic cylinder 32, effectively preventing the first hydraulic cylinder 28 from interfering with the axial telescopic movement of the worm gear 11 and the driving of the second hydraulic cylinder 32. The action of the gear 31-gear 30 generates reverse interference, forming a graded load protection mechanism under complex working conditions of multiple actuator linkage. The smaller rated thrust of the first hydraulic cylinder 28 allows it to play only an auxiliary support role during the following extension and retraction process, without forcibly constraining the extension and retraction of the directional shaft 26 and worm gear 11 due to excessive output force. This avoids damage to precision mating parts such as spline 16 and keyway 15 due to force cascade transmission. The smaller rated thrust of the first hydraulic cylinder 28 results in less energy consumption during the following motion, while also reducing the heat generation of the hydraulic system and improving the overall energy efficiency of the system. Through the tiered configuration of rated thrust, the first hydraulic cylinder 28 is smaller than the second hydraulic cylinder 32, and the second hydraulic cylinder 32 is smaller than the geared motor 17, making the control logic of each actuator decoupled, simplifying the design difficulty of the control strategy, and enhancing the reliability and maintainability of the system.

[0032] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A large-scale wind turbine component CNC welding integrated intelligent positioning and adjustment equipment, comprising a welding fixture; symmetrically fixed slide rails are provided on both sides of the top of the welding fixture, two slide seats are slidably connected to each slide rail, and a first adapter seat is fixedly installed on the top of each slide seat; rollers are rotatably supported between the two first adapter seats on the same front side and between the two first adapter seats on the same rear side; a pressure roller is provided across the top of the two rollers; and a lifting assembly is also provided on the welding fixture for adjusting the vertical distance between the pressure roller and the two rollers, characterized in that: Each of the rollers is fixedly connected to a right-angle shaft at both ends of its axial direction. Each right-angle shaft has a clamping groove at the end away from the corresponding roller. A rolling ball is embedded in each clamping groove. A collar is sleeved around the periphery of each right-angle shaft. A second annular groove is correspondingly opened on the inner ring surface of each collar. Each rolling ball is limited to rolling within the corresponding second annular groove. Orientation components are provided between the two sets of collars on the right side and between the two sets of collars on the left side to constrain the relative movement direction of the two collars on the same side.

2. The large-scale wind turbine component CNC welding integrated intelligent positioning and adjustment equipment according to claim 1, characterized in that: The orientation assembly includes two bridging plates. The ends of the two bridging plates that are far apart from each other are respectively fixedly connected to two corresponding collars. The two bridging plates are provided with second telescopic grooves on their opposite sides. An inner liner is slidably fitted in the two second telescopic grooves. An orientation shaft is fixedly connected to the bottom of the inner liner. The bottom end of the orientation shaft is slidably fitted into the orientation sleeve. The bottom of the orientation sleeve is fixedly assembled on the welding fixture.

3. The large-scale wind turbine component CNC welding integrated intelligent positioning and adjustment equipment according to claim 2, characterized in that: A U-shaped frame is fixedly connected between the two first adapter seats on the same front side and between the two first adapter seats on the same rear side. A threaded cylinder is fixedly installed on the top inner side of each U-shaped frame. A first threaded shaft and a second threaded shaft are respectively connected in a threaded engagement manner in the two threaded cylinders, and the thread directions of the first threaded shaft and the second threaded shaft are opposite to each other. The ends of the first threaded shaft and the second threaded shaft that are close to each other are fixedly connected as one unit, and the ends of the first threaded shaft and the second threaded shaft that are far from each other are respectively rotatably supported on the welding fixture. A hand crank is fixedly sleeved on the end of the first threaded shaft that is far from the second threaded shaft.

4. The large-scale wind turbine component CNC welding integrated intelligent positioning and adjustment equipment according to claim 3, characterized in that: Each of the clamp grooves has a lubrication groove on its inner sidewall, and a spring is fixedly connected to the inner sidewall of each lubrication groove. The free end of the spring elastically abuts against the outside of the spherical surface of the corresponding rolling ball.

5. The large-scale wind turbine component CNC welding integrated intelligent positioning and adjustment equipment according to claim 4, characterized in that: Each of the rollers has a first annular groove on its circumferential surface. A worm gear is fixedly sleeved on each roller at the first annular groove. A worm is meshed with both worm gears. Two second adapter seats are rotatably connected to the worm. The bottom of the two second adapter seats is fixedly connected to the top of the two U-shaped frames.

6. The large-scale wind turbine component CNC welding integrated intelligent positioning and adjustment equipment according to claim 5, characterized in that: A drive shaft is rotatably supported on the welding fixture. One end of the drive shaft is fixedly connected to the output shaft of a geared motor that is fixedly installed on the welding fixture. The other end of the drive shaft is provided with a first telescopic groove. A keyway is provided on the inner side wall of the first telescopic groove. The end of the worm is slidably inserted into the first telescopic groove, and the end of the worm is provided with a spline. The worm is slidably engaged with the keyway through the spline.

7. The large-scale wind turbine component CNC welding integrated intelligent positioning and adjustment equipment according to claim 6, characterized in that: A gear is fixedly sleeved at the other end of the worm gear, and a toothed plate is meshed on the tooth surface of the gear. A second hydraulic cylinder is fixedly installed on the top of one of the U-shaped frames. The toothed plate is fixedly connected to the telescopic end of the second hydraulic cylinder. The driving torque generated by the second hydraulic cylinder driving the gear to rotate through the toothed plate is less than the driving torque output by the reduction motor.

8. The large-scale wind turbine component CNC welding integrated intelligent positioning and adjustment equipment according to claim 7, characterized in that: A bend bracket is fixedly connected to each of the aforementioned directional shafts. A first hydraulic cylinder is fixedly installed on the welding fixture at the location corresponding to each of the aforementioned directional shafts. The end of each bend bracket away from the corresponding directional shaft is fixedly connected to the telescopic end of the corresponding first hydraulic cylinder. The rated output thrust of the first hydraulic cylinder is less than the rated output thrust of the second hydraulic cylinder.

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