Welding equipment and welding method for butt joint of power generation tower barrels

Abstract

The invention discloses welding equipment and a welding method for butt joint of power generation towers, and relates to the field of welding equipment. Inner centering supporting is conducted on the inner wall of the power generation tower drum through the inner supporting assembly, so that the stability and accuracy of positioning of the power generation tower drum are improved, the central axes of the power generation tower drum are located on the same straight line, dislocation of the power generation tower drum in the welding process is prevented, the quality of the power generation tower drum formed through final welding is improved, and the production efficiency is improved. Before the power generation tower barrels are welded, the multiple inner supporting and positioning assemblies can be contracted and stored at one end of the rolling supporting assembly through the multi-stage telescopic shaft, so that the power generation tower barrels are avoided, and a crane can conveniently hoist and place the power generation tower barrels on the rolling supporting assembly one by one; and then the multiple inner supporting and positioning assemblies are driven by the multi-stage telescopic shaft to move and unfold in the power generation tower barrel, so that the inner supporting and positioning assemblies can conduct inner centering supporting on the power generation tower barrel.

Description

Technical Field

[0001] The present invention belongs to the field of welding equipment, and in particular, relates to a welding equipment and a welding method for butt-jointing power towers. Background Art

[0002] The power tower is the tower pole of wind power generation, which mainly plays a supporting role in the wind turbine generator set and absorbs the vibration of the unit. During the production process of the power tower, multiple cylinders need to be welded and connected in sequence along the length direction to obtain the power tower of the required length.

[0003] In the prior art, when the power towers are butt-welded, the problem is that it is impossible to ensure that the central axes of the two power towers are located on the same straight line. Even after the two power towers are butt-welded and placed in a state close to the coaxial center, the power towers are easily misaligned during the welding process due to the influence of internal stress and the rotational movement of the power towers, thereby affecting the quality of the power towers finally welded. Summary of the invention

[0004] In view of the problems in the related art, the present invention proposes a welding device and a welding method for connecting power towers to overcome the above-mentioned technical problems existing in the existing related art.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a welding device, comprising a welding mechanism, wherein the welding mechanism comprises a plurality of rolling support assemblies and a gantry welding assembly, wherein the plurality of rolling support assemblies are arranged in sequence, wherein the gantry welding assembly is installed above the rolling support assembly, and a telescopic mechanism is further arranged between the rolling support assembly and the gantry welding assembly, wherein the telescopic mechanism comprises an end frame, wherein a multi-stage telescopic shaft is installed on one side of the end frame, and a telescopic driving assembly capable of driving the multi-stage telescopic shaft to telescope and a rotation driving assembly capable of driving the multi-stage telescopic shaft to rotate is further installed on the end frame;

[0007] A support and positioning mechanism is installed between the end frame and the multi-stage telescopic shaft. The support and positioning mechanism includes an extension drive assembly and multiple internal support and positioning assemblies. The multiple internal support and positioning assemblies are respectively installed on each telescopic joint of the multi-stage telescopic shaft. The extension drive assembly can drive the multiple internal support and positioning assemblies to synchronously spread and expand or shrink and close.

[0008] Furthermore, the rolling support assembly includes a bracket, with supports fixedly installed on both sides of the top of the bracket, a roller rotatably installed on the top of the support, and a tower drive motor transmission-connected to the roller fixedly installed on the outer side of the top of the support.

[0009] Further, the gantry welding assembly includes two guide rails which are respectively arranged on both sides of the rolling support assembly. A gantry is slidably mounted on the guide rails. A welding machine is fixedly installed at the top end of the gantry, and a welding through groove is further formed at the top end of the gantry on one side of the welding machine.

[0010] Further, the rotary drive assembly includes a turntable and a rotary drive motor. The turntable is rotatably mounted on the upper end of the end frame. A gear ring is fixedly installed on the outer ring of the outer side surface of the turntable. The rotary drive motor is fixedly installed on the outer side surface of the end frame, and a driving gear meshed with the gear ring is transmission-mounted at the output end of the rotary drive motor.

[0011] Further, the multi-stage telescopic shaft includes a fixed support shaft and a plurality of telescopic support shafts. The fixed support shaft is fixedly installed at one end of the turntable. The plurality of telescopic support shafts are sequentially slidably inserted and connected, and the outermost telescopic support shaft is slidably inserted into one end of the fixed support shaft. Limiting convex ridges are fixedly installed on the outer walls of the telescopic support shafts, and limiting grooves capable of slidably engaging with the corresponding limiting convex ridges are fixedly installed on the inner walls of the fixed support shaft and the telescopic support shafts.

[0012] Further, the telescopic drive assembly includes a telescopic drive motor and a plurality of threaded sleeves. The plurality of threaded sleeves are respectively fixedly installed at the left ends inside the corresponding telescopic support shafts. A threaded rod is threadedly driven and installed in the inner ring of each threaded sleeve. The adjacent threaded rods are sequentially slidably inserted, and the left end of the threaded rod is rotatably connected to the outer ring of the adjacent threaded sleeve;

[0013] Limiting guide grooves are formed on the outer walls of each threaded rod, and limiting strips are fixedly installed on the inner walls of each threaded rod. The adjacent threaded rods are slidably engaged through the limiting guide grooves and the limiting strips. The telescopic drive motor is fixedly installed on one side of the turntable, and the telescopic drive motor is in transmission connection with the leftmost threaded rod.

[0014] Further, the inner support positioning assembly includes a guide frame which is fixedly installed at the end of the fixed support shaft or the telescopic support shaft. A plurality of telescopic guide grooves distributed in a circumferential manner are formed on one side of the guide frame. A telescopic slide plate is slidably installed inside the telescopic guide grooves. An inner support strip is fixedly installed at the outer side end of the telescopic slide plate, and a guide post is fixedly installed at the front side of the inner side end of the telescopic slide plate.

[0015] Further, a toothed disc is rotatably installed on one side of the guide frame. A plurality of guide through grooves corresponding to the guide posts are formed on the toothed disc. The guide posts are slidably engaged inside the guide through grooves, and when the toothed disc rotates, the guide posts can be driven to move outward along the direction of the telescopic guide grooves through the guide through grooves.

[0016] Further, the extension drive assembly includes a positioning drive motor, a main transmission rod and a plurality of transmission gears, one end of the main transmission rod is rotatably mounted on the turntable, the positioning drive motor is fixedly mounted on one side of the turntable and is transmission-connected with one end of the main transmission rod, and the other end of the main transmission rod is sequentially slidably inserted with a plurality of telescopic transmission rods, a spline is fixedly mounted on the outer wall of each telescopic transmission rod, and a spline groove that can be slidably engaged with the spline on the adjacent telescopic transmission rod is provided on the inside of the main transmission rod and the telescopic transmission rod;

[0017] The ends of the main transmission rod and the telescopic transmission rod are both rotatably connected to the corresponding guide frames, and the ends of the main transmission rod and the telescopic transmission rod are fixedly installed with the transmission gears, which are meshed and transmission-connected with the toothed disc on one side of the guide frame.

[0018] The present invention also discloses a welding method for butting a power generation tower, and the specific steps are as follows:

[0019] First, the power generation towers are suspended and placed on the rolling support assembly in sequence by a crane, and the ends of adjacent power generation towers are butted, and then the multi-stage telescopic shaft is driven to extend and unfold by the extension drive assembly, at which time the multi-stage telescopic shaft drives multiple inner support positioning assemblies to move and unfold inside the power generation tower, and then the extension drive assembly is used to drive multiple inner support positioning assemblies to spread and unfold synchronously, so that multiple inner support assemblies are spread and supported on the inner walls of multiple power generation towers, so as to provide inner centering support for the power generation tower;

[0020] The tops of the joints of adjacent power towers are then welded through the gantry welding assembly, and the power tower is driven to rotate through the rolling support assembly, so as to perform circumferential welding on the joints. At the same time, the multi-stage telescopic shaft is driven to rotate synchronously with the power tower through the rotating drive assembly, so that the multi-stage telescopic shaft drives the internal support positioning assembly to rotate synchronously with the power tower, so as to continuously support and position the power tower during rotating welding.

[0021] The present invention has the following beneficial effects:

[0022] 1. The present invention is provided with a plurality of inner support positioning components corresponding to the cylinder of the power tower. When the power tower is welded, the plurality of inner support positioning components can be driven to spread and expand synchronously by extending the driving component, so that the inner support components are spread and supported on the inner wall of the corresponding cylinder of the power tower, and the inner wall of the cylinder of the power tower is internally supported, thereby improving the stability and accuracy of the positioning of the cylinder of the power tower, so that the central axis of the cylinder of the power tower is located on the same straight line, preventing the cylinder of the power tower from being dislocated during the welding process, and improving the quality of the power tower finally welded.

[0023] 2. The present invention is provided with a multi-stage telescopic shaft, and a plurality of inner support positioning components are respectively installed on a plurality of telescopic joints of the multi-stage telescopic shaft. Before the power generation tower barrel is welded, the multi-stage telescopic shaft can contract and store the plurality of inner support positioning components at one end of the rolling support component, so as to avoid the power generation tower barrel, facilitating the crane to hoist and place the barrel of the power generation tower barrel on the rolling support component one by one. When the barrel hoisting and docking are completed, the multi-stage telescopic shaft is driven to extend and expand by the extension driving component. At this time, the multi-stage telescopic shaft drives the plurality of inner support positioning components to move and expand inside the power generation tower barrel, facilitating the inner support positioning components to perform inner centering support on each barrel.

[0024] 3. In the present invention, the top of the joint between adjacent power generation tower barrel bodies is welded by the gantry welding component, and the power generation tower barrel is driven to rotate by the rolling support component, so as to perform circumferential welding on the joint, making the welding process more convenient. During welding, the multi-stage telescopic shaft is driven to rotate synchronously with the power generation tower barrel by the rotation driving component, so that the multi-stage telescopic shaft drives the inner support positioning component to rotate synchronously with the power generation tower barrel, so as to continuously support and position the power generation tower barrel during rotary welding, preventing the barrel of the power generation tower barrel from being misaligned during the welding process, and further improving the quality of the finally welded and formed power generation tower barrel.

[0025] Of course, it is not necessary for any product implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is one of the three-dimensional structure diagrams of the welding equipment of the present invention;

[0028] Figure 2 For the present invention Figure 1 The partial enlarged structure diagram at A;

[0029] Figure 3 For the present invention Figure 1 The partial enlarged structure diagram at B;

[0030] Figure 4 For the present invention Figure 1 The partial enlarged structure diagram at C;

[0031] Figure 5 It is the second three-dimensional structure diagram of the welding equipment of the present invention;

[0032] Figure 6For the present invention Figure 5 Schematic diagram of the partial enlarged structure at D of the present invention;

[0033] Figure 7 For the present invention Figure 5 Schematic diagram of the partial enlarged structure at E of the present invention;

[0034] Figure 8 Schematic diagram III of the three-dimensional structure of the welding equipment of the present invention;

[0035] Figure 9 Schematic diagram of the three-dimensional structure of the telescopic mechanism of the present invention;

[0036] Figure 10 For the present invention Figure 9 Schematic diagram of the partial enlarged structure at F of the present invention;

[0037] Figure 11 For the present invention Figure 9 Schematic diagram of the partial enlarged structure at G of the present invention.

[0038] In the figure: 1. Welding mechanism; 11. Guide rail; 12. Bracket; 13. Gantry; 14. Welder; 15. Welding through slot; 16. Support; 17. Roller; 18. Tower barrel drive motor; 2. Telescopic mechanism; 21. End frame; 22. Turntable; 23. Gear ring; 24. Rotation drive motor; 25. Driving gear; 26. Telescopic drive motor; 27. Fixed support shaft; 28. Telescopic support shaft; 29. Threaded rod; 210. Threaded sleeve; 211. Limit guide groove; 212. Limit strip; 213. Limit convex rib; 214. Limit groove; 3. Support and positioning mechanism; 31. Positioning drive motor; 32. Main transmission rod; 33. Guide frame; 34. Tooth disc; 35. Transmission gear; 36. Inner support strip; 37. Telescopic slide plate; 38. Guide through slot; 39. Guide post; 310. Telescopic transmission rod; 311. Telescopic guide slot; 312. Spline; 313. Spline groove; 100. Power generation tower barrel. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the invention.

[0040] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "top", "middle", "inner", etc. indicating orientation or positional relationship are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the invention.

[0041] Embodiment 1

[0042] Please refer to Figure 1 、 Figure 5 、 Figure 8 As shown, the present invention is a welding device, including a welding mechanism 1. The welding mechanism 1 includes a plurality of rolling support components and a gantry welding component. The plurality of rolling support components are arranged in sequence. The gantry welding component is installed above the rolling support components. A telescopic mechanism 2 is further arranged between the rolling support components and the gantry welding component. The telescopic mechanism 2 includes an end frame 21. One side of the end frame 21 is installed with a multi-stage telescopic shaft. The end frame 21 is also installed with a telescopic driving component capable of driving the multi-stage telescopic shaft to expand and contract and a rotary driving component capable of driving the multi-stage telescopic shaft to rotate; A support positioning mechanism 3 is installed between the end frame 21 and the multi-stage telescopic shaft. The support positioning mechanism 3 includes an extension driving component and a plurality of inner support positioning components. The plurality of inner support positioning components are respectively installed on each telescopic section of the multi-stage telescopic shaft. The extension driving component can drive the plurality of inner support positioning components to expand and spread or contract and close synchronously;

[0043] When welding the power generation tower barrel 100 with this welding device, first, the power generation tower barrel 100 is successively suspended and placed on the rolling support components by a crane, and the ends of adjacent power generation tower barrels 100 are butted. Then, the extension driving component is used to drive the multi-stage telescopic shaft to extend and expand. At this time, the multi-stage telescopic shaft drives the plurality of inner support positioning components to move and expand inside the power generation tower barrel 100. Then, the extension driving component is used to drive the plurality of inner support positioning components to expand and spread synchronously, so that the plurality of inner support components spread and support on the inner walls of the plurality of power generation tower barrels 100 to perform inner centering support on the power generation tower barrel 100; Then, the gantry welding component is used to weld the top of the joint between adjacent power generation tower barrels 100, and the rolling support components are used to drive the power generation tower barrel 100 to rotate, so as to perform circumferential welding on the joint. At the same time, the rotary driving component is used to drive the multi-stage telescopic shaft to rotate synchronously with the power generation tower barrel 100, so that the multi-stage telescopic shaft drives the inner support positioning components to rotate synchronously with the power generation tower barrel 100 to continuously support and position the power generation tower barrel 100 during rotary welding;

[0044] Among them, the inner wall of the power tower 100 is internally supported by the internal support assembly, thereby improving the stability and accuracy of the positioning of the power tower 100, so that the central axis of the power tower 100 is located on the same straight line, preventing the power tower 100 from being misaligned during the welding process, and improving the quality of the power tower 100 finally welded and formed. Before the power tower 100 is welded, the multiple internal support positioning assemblies can be retracted and stored at one end of the rolling support assembly through the multi-stage telescopic shaft, so as to avoid the power tower 100, making it convenient for the crane to lift the power tower 100 one by one and place it on the rolling support assembly. After the lifting and docking of the power tower 100 is completed, the multiple internal support positioning assemblies are driven by the multi-stage telescopic shaft to move and unfold inside the power tower 100, so as to facilitate the internal support positioning assemblies to perform internal centering support on the power tower 100.

[0045] Embodiment 2

[0046] See also Figure 1 , Figure 2 , Figure 8 As shown, the difference between this embodiment and the above embodiment is that the rolling support assembly includes a bracket 12, and a support 16 is fixedly installed on both sides of the top of the bracket 12, and a roller 17 is rotatably installed on the top of the support 16, and a tower drive motor 18 connected to the roller 17 is fixedly installed on the outer side of the top of the support 16; the gantry welding assembly includes two guide rails 11, and the two guide rails 11 are respectively arranged on both sides of the rolling support assembly, and a gantry 13 is slidably installed on the guide rails 11, and a welding machine 14 is fixedly installed on the top of the gantry 13, and a welding through groove 15 located on one side of the welding machine 14 is also opened at the top of the gantry 13;

[0047] Before welding, the gantry 13 is slid to one side along the guide rail 11 for avoidance, so that the crane can hoist and place the power tower 100, so that the power tower 100 is supported and placed between the two rollers 17 at the upper end of the bracket 12. During welding, the gantry 13 is moved along the guide rail 11 again, so that the welding groove 15 on the gantry 13 is directly opposite to the top of the joint of the adjacent power tower 100, and then the welding gun of the welding machine 14 is welded to the top of the joint of the power tower 100 through the welding groove 15, and at the same time, the roller 17 is driven to rotate by the tower drive motor 18, so that the roller 17 drives the power tower 100 to rotate through the friction force, and then the joint of the power tower 100 is circumferentially welded.

[0048] Embodiment 3

[0049] See also Figure 1 , Figure 3 , Figure 4 , Figures 8 - 11As shown, the difference between this embodiment and the above-mentioned embodiment is that the rotary drive assembly includes a turntable 22 and a rotary drive motor 24, the turntable 22 is rotatably installed on the upper end of the end frame 21, the outer ring of the outer side surface of the turntable 22 is fixedly installed with a gear ring 23, the rotary drive motor 24 is fixedly installed on the outer side surface of the end frame 21, and the output end of the rotary drive motor 24 is transmission-installed with a driving gear 25 meshing and transmission-connected with the gear ring 23; the multi-stage telescopic shaft includes a fixed support shaft 27 and a plurality of telescopic support shafts 28, the fixed support shaft 27 is fixedly installed on one end of the turntable 22, the plurality of telescopic support shafts 28 are slidably plugged in sequence, and the telescopic support shaft 28 at the outermost end is slidably plugged into one end of the fixed support shaft 27, the outer wall of the telescopic support shaft 28 is fixedly installed with a limiting ridge 213, and the inner wall of the fixed support shaft 27 and the telescopic support shaft 28 is fixedly installed with a limiting groove 214 that can be slidably engaged with the corresponding limiting ridge 213;

[0050] The telescopic drive assembly includes a telescopic drive motor 26 and a plurality of threaded sleeves 210, wherein the plurality of threaded sleeves 210 are respectively fixedly mounted on the left side ends of the corresponding telescopic support shafts 28, and the inner ring of each threaded sleeve 210 is threadedly mounted with a threaded rod 29, and adjacent threaded rods 29 are slidably plugged in sequence, and the left side ends of the threaded rods 29 are rotationally connected with the outer rings of the adjacent threaded sleeves 210; a limiting guide groove 211 is provided on the outer wall of each threaded rod 29, and a limiting strip 212 is fixedly mounted on the inner wall of each threaded rod 29, and adjacent threaded rods 29 are slidably engaged with each other through the limiting guide groove 211 and the limiting strip 212, and the telescopic drive motor 26 is fixedly mounted on one side of the turntable 22, and the telescopic drive motor 26 is transmission-connected with the threaded rod 29 at the leftmost end;

[0051] When the multi-stage telescopic shaft is extended, the leftmost threaded rod 29 is driven to rotate by the telescopic drive motor 26. At the same time, when the leftmost threaded rod 29 rotates, the leftmost threaded sleeve 210 is driven to move to the right and extend, thereby driving the leftmost telescopic support shaft 28 to move to the right and extend. When the leftmost threaded rod 29 rotates, all the threaded rods 29 are driven to rotate synchronously through the sliding cooperation of the limiting guide groove 211 and the limiting bar 212, thereby driving all the telescopic support shafts 28 to move to the right and expand synchronously through the cooperation of the threaded rod 29 and the threaded sleeve 210; at the same time, the threaded sleeve 210 also drives the right-side threaded rod 29 and the telescopic support shaft 28 to move to the right synchronously through the threaded rod 29 of the next stage rotatably connected thereto, thereby driving the multiple telescopic support shafts 28 to expand and extend to the right through the extension of the threaded drive and the step-by-step translation of the threaded sleeve 210, thereby driving the inner support positioning assembly on the telescopic support shaft 28 to move and expand.

[0052] Embodiment 4

[0053] See also Figures 1 - 8As shown in the figure, the difference between this embodiment and the above embodiment is that the inner support positioning assembly includes a guide frame 33. The guide frame 33 is fixedly installed at the end of the fixed support shaft 27 or the telescopic support shaft 28. A plurality of circumferentially distributed telescopic guide grooves 311 are formed on one side of the guide frame 33. A telescopic slide plate 37 is slidably installed inside the telescopic guide groove 311. An inner support bar 36 is fixedly installed at the outer end of the telescopic slide plate 37. A guide post 39 is fixedly installed at the front side of the inner end of the telescopic slide plate 37. A gear disk 34 is rotatably installed on one side of the guide frame 33. A plurality of guide through grooves 38 corresponding to the guide posts 39 are formed on the gear disk 34. The guide post 39 is slidably clamped inside the guide through groove 38. When the gear disk 34 rotates, it can drive the guide post 39 to move outward along the direction of the telescopic guide groove 311 through the guide through groove 38.

[0054] The stretching drive assembly includes a positioning drive motor 31, a main transmission rod 32, and a plurality of transmission gears 35. One end of the main transmission rod 32 is rotatably installed on the turntable 22. The positioning drive motor 31 is fixedly installed on one side of the turntable 22 and is in transmission connection with one end of the main transmission rod 32. A plurality of telescopic transmission rods 310 are sequentially slidably inserted at the other end of the main transmission rod 32. A spline 312 is fixedly installed on the outer wall of each telescopic transmission rod 310. Spline grooves 313 that can slidably engage with the splines 312 on the adjacent telescopic transmission rods 310 are provided inside the main transmission rod 32 and the telescopic transmission rods 310. The ends of the main transmission rod 32 and the telescopic transmission rods 310 are rotatably connected to the corresponding guide frames 33 respectively. The ends of the main transmission rod 32 and the telescopic transmission rods 310 are fixedly installed with the transmission gears 35. The transmission gears 35 are in meshing transmission connection with the gear disk 34 on one side of the guide frame 33.

[0055] When a plurality of telescopic support shafts 28 expand and extend to the right, the telescopic support shafts 28 drive the corresponding guide frames 33 and gear disks 34 to move and unfold, so that a plurality of guide frames 33 are sequentially distributed along the axial direction inside the power generation tower barrel 100. At the same time, the guide frame 33 drives a plurality of telescopic transmission rods 310 to extend synchronously. Then, the positioning drive motor 31 is used to drive the main transmission rod 32 to rotate. At the same time, the main transmission rod 32 drives all the telescopic transmission rods 310 to rotate synchronously through the sliding fit of the splines 312 and the spline grooves 313, thereby driving all the transmission gears 35 to rotate synchronously. When the transmission gears 35 rotate, they meshingly drive the gear disk 34 to rotate. When the gear disk 34 rotates, it drives the guide post 39 to move outward along the direction of the telescopic guide groove 311 through the guide through groove 38, so as to drive the telescopic slide plate 37 to slide outward along the telescopic guide groove 311 through the guide post 39. At this time, the telescopic slide plate 37 drives the inner support bars 36 outside the guide frame 33 to move and expand synchronously, so that the inner support bars 36 abut against the inner wall of the power generation tower barrel 100, and then the power generation tower barrel 100 is internally centered and supported by the circumferentially distributed inner support bars 36.

[0056] Further, when the roller 17 drives the power generation tower cylinder 100 for circumferential welding, the driving motor 24 drives the driving gear 25 to rotate, and the driving gear 25 meshes with and drives the driven gear ring 23 to rotate, thereby driving the turntable 22 to rotate synchronously with the power generation tower cylinder 100. At this time, the turntable 22 drives the fixed support shaft 27, the telescopic support shaft 28, the guide frame 33 and the inner support strip 36 to rotate synchronously with the power generation tower cylinder 100, so as to continuously support and position the power generation tower cylinder 100 during rotary welding and prevent the power generation tower cylinder 100 from being misaligned during the welding process.

[0057] Embodiment 5

[0058] This embodiment discloses a welding method for butt-jointing power generation tower cylinders, and the specific steps are as follows:

[0059] First, the power generation tower cylinder 100 is successively suspended and placed on the rolling support assembly by a crane, and the ends of adjacent power generation tower cylinders 100 are butted. Then, the stretching drive assembly drives the multi-stage telescopic shaft to extend and unfold. At this time, the multi-stage telescopic shaft drives a plurality of inner support and positioning assemblies to move and unfold inside the power generation tower cylinder 100, and then the stretching drive assembly drives the plurality of inner support and positioning assemblies to expand and unfold synchronously, so that the plurality of inner support assemblies expand and support on the inner walls of the plurality of power generation tower cylinders 100 to perform inner centering support on the power generation tower cylinder 100.

[0060] Then, the top of the joint between adjacent power generation tower cylinders 100 is welded by the gantry welding assembly, and the rolling support assembly drives the power generation tower cylinder 100 to rotate, so as to perform circumferential welding on the joint. At the same time, the rotation drive assembly drives the multi-stage telescopic shaft to rotate synchronously with the power generation tower cylinder 100, so that the multi-stage telescopic shaft drives the inner support and positioning assembly to rotate synchronously with the power generation tower cylinder 100 to continuously support and position the power generation tower cylinder 100 during rotary welding.

[0061] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0062] The above-disclosed preferred embodiments of the invention are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the invention, so that those skilled in the art in the technical field can understand and utilize the invention well.

Claims

1. A welding device, comprising a welding mechanism, characterized in that: The welding mechanism comprises a plurality of rolling support assemblies and a gantry welding assembly, wherein the plurality of rolling support assemblies are arranged in sequence, the gantry welding assembly is installed above the rolling support assembly, a telescopic mechanism is also arranged between the rolling support assembly and the gantry welding assembly, the telescopic mechanism comprises an end frame, a multi-stage telescopic shaft is installed on one side of the end frame, a telescopic driving assembly capable of driving the multi-stage telescopic shaft to telescope and a rotation driving assembly capable of driving the multi-stage telescopic shaft to rotate is also installed on the end frame; A support and positioning mechanism is installed between the end frame and the multi-stage telescopic shaft. The support and positioning mechanism includes an extension drive assembly and multiple internal support and positioning assemblies. The multiple internal support and positioning assemblies are respectively installed on each telescopic joint of the multi-stage telescopic shaft. The extension drive assembly can drive the multiple internal support and positioning assemblies to synchronously spread and expand or shrink and close.

2. A welding device according to claim 1, characterized in that: The rolling support assembly includes a bracket, with supports fixedly installed on both sides of the top of the bracket, a roller rotatably installed on the top of the support, and a tower drive motor connected to the roller transmission is fixedly installed on the outer side of the top of the support.

3. A welding device according to claim 1, characterized in that: The gantry welding assembly includes two guide rails, which are respectively arranged on both sides of the rolling support assembly. A gantry is slidably installed on the guide rails, a welding machine is fixedly installed on the top of the gantry, and a welding through groove is also opened on the top of the gantry on one side of the welding machine.

4. A welding device according to claim 1, characterized in that: The rotary drive assembly includes a turntable and a rotary drive motor. The turntable is rotatably mounted on the upper end of the end frame. A gear ring is fixedly mounted on the outer ring of the outer side of the turntable. The rotary drive motor is fixedly mounted on the outer side of the end frame. An output end transmission of the rotary drive motor is equipped with a driving gear meshing with the gear ring.

5. A welding device according to claim 4, characterized in that: The multi-stage telescopic shaft includes a fixed support shaft and multiple telescopic support shafts, the fixed support shaft is fixedly installed on one end of the turntable, the multiple telescopic support shafts are slidably plugged in sequence, and the telescopic support shaft at the outermost end is slidably plugged into one end of the fixed support shaft, and the outer walls of the telescopic support shafts are fixedly installed with limiting ridges, and the inner walls of the fixed support shaft and the telescopic support shaft are fixedly installed with limiting grooves that can be slidably engaged with the corresponding limiting ridges.

6. A welding device according to claim 5, characterized in that: The telescopic drive assembly includes a telescopic drive motor and a plurality of threaded sleeves, wherein the plurality of threaded sleeves are respectively fixedly mounted on the left end of the corresponding telescopic support shaft, and the inner ring of each threaded sleeve is threadedly mounted with a threaded rod, and adjacent threaded rods are slidably plugged in sequence, and the left end of the threaded rod is rotationally connected to the outer ring of the adjacent threaded sleeve; A limiting guide groove is provided on the outer wall of each threaded rod, a limiting strip is fixedly installed on the inner wall of each threaded rod, adjacent threaded rods are slidably connected through the limiting guide groove and the limiting strip, the telescopic drive motor is fixedly installed on one side of the turntable, and the telescopic drive motor is transmission-connected to the threaded rod at the leftmost end.

7. A welding device according to claim 5, characterized in that: The inner support positioning assembly includes a guide frame, which is fixedly installed on the end of the fixed support shaft or the telescopic support shaft. One side of the guide frame is provided with a plurality of circumferentially distributed telescopic guide grooves, a telescopic slide is slidably installed inside the telescopic guide groove, an inner support bar is fixedly installed on the outer end of the telescopic slide, and a guide column is fixedly installed on the front side of the inner end of the telescopic slide.

8. A welding device according to claim 7, characterized in that: A toothed disc is rotatably mounted on one side of the guide frame, and a plurality of guide slots corresponding to the guide posts are formed on the toothed disc. The guide posts are slidably engaged in the guide slots, and when the toothed disc rotates, the guide posts can be driven to move outwards along the telescopic guide slots through the guide slots.

9. A welding device according to claim 8, characterized in that: The extension drive assembly includes a positioning drive motor, a main transmission rod and a plurality of transmission gears, one end of the main transmission rod is rotatably mounted on the turntable, the positioning drive motor is fixedly mounted on one side of the turntable and is transmission-connected with one end of the main transmission rod, and the other end of the main transmission rod is sequentially slidably inserted with a plurality of telescopic transmission rods, a spline is fixedly mounted on the outer wall of each telescopic transmission rod, and a spline groove that can be slidably engaged with the spline on the adjacent telescopic transmission rod is provided on the inside of the main transmission rod and the telescopic transmission rod; The ends of the main transmission rod and the telescopic transmission rod are both rotatably connected to the corresponding guide frames, and the ends of the main transmission rod and the telescopic transmission rod are fixedly installed with the transmission gears, which are meshed and transmission-connected with the toothed disc on one side of the guide frame.

10. A method for welding power tower butt joints, using a welding device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: First, the power generation towers are suspended and placed on the rolling support assembly in sequence by a crane, and the ends of adjacent power generation towers are butted, and then the multi-stage telescopic shaft is driven to extend and unfold by the extension drive assembly, at which time the multi-stage telescopic shaft drives multiple inner support positioning assemblies to move and unfold inside the power generation tower, and then the extension drive assembly is used to drive multiple inner support positioning assemblies to spread and unfold synchronously, so that multiple inner support assemblies are spread and supported on the inner walls of multiple power generation towers, so as to provide inner centering support for the power generation tower; The tops of the joints of adjacent power towers are then welded through the gantry welding assembly, and the power tower is driven to rotate through the rolling support assembly, so as to perform circumferential welding on the joints. At the same time, the multi-stage telescopic shaft is driven to rotate synchronously with the power tower through the rotating drive assembly, so that the multi-stage telescopic shaft drives the internal support positioning assembly to rotate synchronously with the power tower, so as to continuously support and position the power tower during rotating welding.

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