Large-diameter ta31 pipe annular cross-section welding device and welding method

Abstract

The application discloses a large-diameter TA31 pipe annular section welding device and a welding method, and relates to the technical field of welding devices.The device comprises a fixing cylinder, two fixing cylinders are fixedly connected with fixing assemblies inside, the inner side of a welding mechanism is fixedly connected with the outer side of the fixing cylinder, a lifting assembly is fixedly connected on the side of the bottom plate far from the supporting leg, the side of the lifting assembly far from the bottom plate is fixedly connected with the outer side of the fixing cylinder far from the bottom plate, the outer side of the fixing cylinder close to the bottom plate is fixedly connected with a plate body, a blanking assembly is fixedly connected with the side of the bottom plate far from the plate body, argon is filled, oxygen, nitrogen and other gas impurities can be avoided to cause material oxidation during welding, the weld metal is high in purity and low in impurities, the strength, toughness and corrosion resistance of the weld are improved, and the welding slag and smoke generated during welding fall along the fixing cylinder under the synergistic effect of gravity and argon circulation.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a welding equipment and method for welding large-diameter TA31 pipe annular cross-sections. Background Technology

[0002] TA31 pipe is a titanium alloy pipe, mainly composed of titanium and containing specific alloying elements to optimize its performance. This type of pipe has relatively low density, high strength, and low thermal conductivity. Its most outstanding chemical property is its excellent corrosion resistance, which can resist seawater and acidic and alkaline solutions of a certain concentration. In terms of physical properties, in addition to the density, strength, and thermal conductivity mentioned above, it also has good toughness and plasticity. In terms of processing performance, it is difficult to weld and is often operated by argon arc welding under inert gas protection, which has high requirements for welding materials and processes.

[0003] After the two pipes are joined together, when welding the annular weld surfaces of the two pipes, it is necessary to fill the joint with protective gas to protect the weld and ensure that the protective gas fills the welding position and saves protective gas. Usually, a protective cover needs to be placed on the outside of the welding position. At this time, the fumes and slag generated during welding can easily adhere to the protective cover and cause blockage. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a welding equipment and welding method for large-diameter TA31 pipe annular cross-section.

[0005] According to one aspect of the present invention, a welding device for a large-diameter TA31 pipe annular section includes:

[0006] The base plate has a support leg fixedly connected to its bottom, and a welding device is fixedly connected to the side of the base plate away from the support leg.

[0007] The welding equipment includes:

[0008] Two fixing cylinders are symmetrically arranged on the top of the base plate, and fixing components are fixedly connected inside both fixing cylinders;

[0009] The welding mechanism is fixedly connected to the outer side of the fixed cylinder.

[0010] The lifting assembly is fixedly connected to the side of the base plate away from the support leg, and the side of the lifting assembly away from the base plate is fixedly connected to the outer side of the fixed cylinder away from the base plate. A plate is fixedly connected to the outer side of the fixed cylinder close to the base plate.

[0011] The material feeding assembly is fixedly connected to the side of the base plate away from the plate body.

[0012] Insert the pipe into the fixed cylinder furthest from the base plate. The pipe slides along the fixed cylinder furthest from the base plate into another fixed cylinder. Activate the lifting assembly, which sequentially raises the upper fixed cylinder, welding mechanism, lower fixed cylinder, and plate. The fixed cylinders and pipe move relative to each other until the end of the pipe is positioned in the middle of the two fixed cylinders. Activate the fixing assembly inside the fixed cylinder closest to the base plate to secure the pipe. Then insert another pipe and activate the fixing assembly inside the fixed cylinder furthest from the base plate to secure the second pipe. The ends of the two pipes are now joined. Activate the welding mechanism and simultaneously fill it with argon gas as a protective gas. The output end of the welding mechanism rotates to perform rotary welding on the annular cross-section at the joint of the two pipes. The argon gas prevents oxidation of the material caused by oxygen, nitrogen, and other gaseous impurities during welding, resulting in high purity weld metal with fewer impurities, improving the strength, toughness, and corrosion resistance of the weld. Simultaneously, the welding slag and fumes produced during welding fall down the fixed cylinder under the combined effect of gravity and the flow of argon gas.

[0013] Furthermore, the welding mechanism includes a housing, of which two housings are provided. The ends of two fixed cylinders, close to each other, extend into the interior of the two housings, and the outer surfaces of the fixed cylinders are fixedly connected to the inner surfaces of the housings. Connecting pipes are fixedly connected to the side of the housing away from the base plate, and several connecting pipes are evenly distributed along the circumference of the housing. Welding components are slidably connected at the intervals between the housing and the fixed cylinders, and several welding components are evenly distributed along the circumference of the housing. A driving component is fixedly connected to the outer surface of the housing, and the output end of the driving component is fixedly connected to the side of the welding component away from the fixed cylinder. The side of the driving component near the base plate is fixedly connected to the side of the plate away from the base plate. A guide component is fixedly connected to the top of the base plate, and the guide component is located directly below the fixed cylinders. A pipe is fixedly connected to the side of the housing near the base plate, the pipe penetrating the plate, and the pipe extends towards... The tube is inclined on one side near the base plate, and a fixed plate is fixedly connected to the side of the base plate away from the support leg. The outer side of the tube body is fixedly connected to the inner side of the fixed plate. Argon gas is connected through a connecting pipe. The argon gas enters the outer shell, fixed cylinder, and tube body through the connecting pipe. The tube placement mechanism blocks the end of the fixed cylinder away from the base plate. The argon gas guides the welding fumes and slag. The fumes and slag fall to the side near the base plate through the fixed cylinder and tube body. The drive component is activated, and the output end of the drive component drives the welding component to rotate. The welding component is activated to weld the joint of the two tube ends. The guide component is activated to fix the tube. The lifting component is activated and the tube is released. As the lifting component rises, the welded tube is separated from the fixed cylinder. The guide component rotates in one direction to complete the tube unloading, making the tube directional unloading.

[0014] Furthermore, the welding assembly includes an outer scraper, the surface of which is slidably connected to the inner sides of the two outer shells. A connecting plate is fixedly connected to the side of the outer scraper away from the outer shell. The side of the connecting plate away from the outer scraper is slidably connected to the side of the two fixed cylinders that are close to each other. Welding telescopic rods are symmetrically arranged on the side of the connecting plate away from the outer scraper. The surface of the welding telescopic rod is fixedly connected to the inner side of the connecting plate. A welding plate is fixedly connected to the side of the welding telescopic rod away from the connecting plate, and the output end of the welding telescopic rod is fixedly connected to the welding plate. A welder is fixedly connected to the side of the welding plate away from the welding telescopic rod. When the welding telescopic rod is activated, it moves the welding plate, thereby moving the welder closer to the joint of the two pipes, thus welding pipes of different diameters. The drive assembly drives the outer scraper to rotate, thereby rotating the connecting plate, welding telescopic rod, welding plate, and welder, thus completing the welding of the annular section. During welding, the outer scraper scrapes the inner side of the outer shell, scraping off the welding slag and fumes adhering to the inner side of the outer shell, and finally scraping the welding slag and fumes into the inside of the pipe body to prevent the outer shell from clogging.

[0015] Furthermore, a telescopic sleeve is provided at the interval between the connecting plate and the welding plate, and the two sides of the telescopic sleeve are fixedly connected to the sides of the connecting plate and the welding plate that are close to each other. Both ends of the outer scraper are fixedly connected to the inner scraper, and the sides of the two inner scrapers that are close to each other are fixedly connected to the surface of the connecting plate. The surface of the connecting plate is slidably connected to the inner side of the fixed cylinder. When the welding plate moves, it drives the telescopic sleeve to extend and retract, preventing welding slag and fumes from contacting the welding telescopic rod and preventing the welding telescopic rod from being damaged. When the outer scraper rotates, it drives the inner scraper to rotate, thereby scraping the outer side of the fixed cylinder, scraping off the fumes and welding slag attached to the surface of the fixed cylinder, and letting them fall to the inner side of the outer shell. As the outer scraper rotates, they are swept into the inside of the pipe body. At the same time as welding, the outer shell and the fixed cylinder are cleaned.

[0016] Furthermore, the drive assembly includes an outer ring cylinder, the inner side of which is slidably connected to the outer side of the outer shell, and the inner side of which is fixedly connected to the side of the outer scraper away from the connecting plate. A gear ring is fixedly connected to the outer side of the outer ring cylinder, and a gear is meshed with the outer side of the gear ring. A rotating shaft is fixedly connected to the side of the gear near the plate, and a motor is fixedly connected to the end of the rotating shaft away from the gear. The rotating shaft is fixedly connected to the output end of the motor. When the motor is started, the output end of the motor drives the rotating shaft to rotate, which drives the gear to rotate, which drives the gear ring to rotate, which drives the outer ring cylinder to rotate, thereby driving the outer scraper to rotate, and finally driving the welder to rotate. A protective cover is rotatably connected to the outer side of the outer ring cylinder. The end of the rotating shaft near the motor passes through the protective cover, and the inner side of the protective cover is rotatably connected to the surface of the rotating shaft. A column is fixedly connected to the side of the protective cover near the plate, and two columns are symmetrically arranged at the interval between the plate and the protective cover. The end of the column away from the protective cover is fixedly connected to the side of the plate away from the bottom plate. A fixing sleeve is fixedly connected to the surface of the motor, and the side of the fixing sleeve away from the motor is fixedly connected to the surface of the column. The protective cover protects the gear ring and the gear.

[0017] Furthermore, the fixing component includes a fixed telescopic rod, which is fixedly connected to the inner side of the fixing cylinder. Several fixed telescopic rods are evenly arranged along the circumference of the fixing cylinder. A fixing block is fixedly connected to the end of the fixed telescopic rod away from the fixing cylinder. A fixing ring plate is fixedly connected to the side of the fixing block away from the fixed telescopic rod. The fixing ring plate is made of elastic material and is hollow. When the fixed telescopic rod is activated, it moves the fixing block, which in turn moves the fixing ring plate. The fixing ring plate contacts the pipe and then deforms, covering the surface of the pipe to complete the fixing. The elastic fixing ring plate can fix pipes of different sizes, and the hollow fixing ring plate can deform better, resulting in a better fixing effect.

[0018] Furthermore, the lifting assembly includes lifting telescopic rods, which are symmetrically arranged on the side of the base plate away from the support legs. Each of the two lifting telescopic rods is provided with a connecting sleeve on the side away from the base plate, and a bracket is provided at the interval between the two connecting sleeves. The bracket is fixedly connected to the side of the plate away from the base plate, and the inner side of the connecting sleeve is fixedly connected to the surface of the bracket. The inner side of the bracket is fixedly connected to the outer side of the fixed cylinder away from the plate. When the lifting telescopic rods are activated, they move the connecting sleeves, which in turn move the bracket, the plate, and the two fixed cylinders, thereby completing the adjustment of the welding position and the unloading after welding.

[0019] Furthermore, the feeding assembly includes a feeding cylinder, which is fixedly connected to the side of the base plate away from the plate body and is located directly below the fixed cylinder. A connecting rod is fixedly connected to the outer side of the feeding cylinder, and the side of the connecting rod away from the feeding cylinder is fixedly connected to the support leg. The surface of the base plate has several feeding holes, which are located directly below the fixed cylinder. Welding slag and fumes fall along the fixed cylinder and pass through the feeding holes, eventually being discharged to the bottom of the base plate through the feeding cylinder, thus completing the feeding of welding waste.

[0020] Furthermore, side plates are provided at the interval between the plate body and the base plate. Both side plates are fixedly connected to the side of the base plate closest to the plate body. Guide telescopic rods are fixedly connected to the sides of the two side plates that are close to each other. A guide plate is rotatably connected to the end of the guide telescopic rod away from the side plate. A V-shaped plate is provided on the side of the guide plate away from the guide telescopic rod. Spring plates are symmetrically arranged at the interval between the V-shaped plate and the guide plate. Two sets of spring plates are symmetrically arranged, with several spring plates in each set. The two ends of the spring plates are fixedly connected to the sides of the V-shaped plate and the guide plate that are close to each other, respectively. Springs are sleeved on the outside of the guide telescopic rods. The two ends of the springs are fixedly connected to the sides of the side plates and the guide plates that are close to each other, respectively. When the guide telescopic rods are activated, the two guide telescopic rods move closer together, causing the guide plate, spring plates, and V-shaped plates to move. Two V-shaped plates approach each other to secure the pipe. The V-shaped plates compress the pipe, causing them to deform and adhere to the pipe surface for better fixation. The spring plate provides support as the V-shaped plates deform. When the guide plate moves, it stretches the spring, causing it to rotate. The rotated V-shaped plate is parallel to the base plate. When the pipe is unloaded, the spring's restoring force breaks the pipe's vertical balance, ensuring each pipe tilts in the fixed direction. This ensures stable unloading while securing the pipe. Due to inertia, the pipe falls to the top of the base plate, where the spring rotates to cushion the fall and prevent damage.

[0021] According to another aspect of the present invention, a method for welding a large-diameter TA31 pipe with an annular cross section is provided, comprising the following steps:

[0022] Step 1: Pipe Fixing. Insert the pipe into the fixing cylinder furthest from the base plate. The pipe slides along the fixing cylinder furthest from the base plate into another fixing cylinder. Activate the lifting telescopic rod. The lifting telescopic rod moves the connecting sleeve, which in turn moves the bracket, plate, and two fixing cylinders. The fixing cylinders and the pipe move relative to each other. Finally, the end of the pipe is located in the middle of the two fixing cylinders. Activate the fixing telescopic rod. The fixing telescopic rod moves the fixing block, which in turn moves the fixing ring plate. The fixing ring plate contacts the pipe and then deforms, covering the surface of the pipe to complete the fixing. Then insert another pipe and fix it in the same way. The ends of the two pipes are now joined.

[0023] Step 2: Secondary fixing. Activate the guide telescopic rods. The two guide telescopic rods move closer to each other, causing the guide plate, spring plate, and V-shaped plate to move. The two V-shaped plates move closer to each other, thereby fixing the pipe again.

[0024] Step 3: Introduce protective gas. Connect argon gas through the connecting pipe. Argon gas enters the outer shell, fixed cylinder, and tube body through the connecting pipe. The mechanism for placing the tube blocks the end of the fixed cylinder that is away from the base plate. Argon gas is introduced to act as a protective gas during welding.

[0025] Step 4: Start welding. Start the welding telescopic rod. The welding telescopic rod moves the welding plate, thereby bringing the welder closer to the joint of the two pipes. Start the motor. The output end of the motor drives the rotating shaft to rotate, which drives the gear to rotate, which drives the gear ring to rotate, which drives the outer ring cylinder to rotate, thereby driving the outer scraper to rotate, which in turn drives the connecting plate, welding telescopic rod, welding plate, and welder to rotate, thereby completing the welding of the annular section.

[0026] Step 5: Inner wall cleaning. During welding, the outer scraper scrapes the inner side of the outer shell to remove the welding slag and fumes adhering to the inner side of the outer shell. Finally, the welding slag and fumes are scraped into the inside of the pipe. The outer scraper rotates, which drives the inner scraper to rotate, thereby scraping the outer side of the fixed cylinder to remove the fumes and welding slag adhering to the surface of the fixed cylinder and drop them onto the inner side of the outer shell. As the outer scraper rotates, they are swept into the inside of the pipe.

[0027] Step 6: Weld slag unloading. Argon gas guides the welding fumes and slag. The fumes and slag fall through the fixed cylinder and pipe to the side near the bottom plate. The slag and dust are discharged through the unloading hole and finally discharged to the bottom of the bottom plate through the unloading cylinder, completing the unloading of welding waste.

[0028] Step 7: Pipe guiding. When the guide plate moves, the spring is stretched. The spring rotates while being stretched. The rotated V-shaped plate is parallel to the base plate. When the pipe is unloaded, the balance of the pipe after it is erected is broken by the elastic force of the spring restoring its rotational deformation, and the pipe tilts in the fixed direction.

[0029] The beneficial effects of this invention are as follows:

[0030] 1. This invention, by setting up a welding device and introducing argon gas, can avoid the oxidation of materials caused by gaseous impurities such as oxygen and nitrogen during welding, resulting in high purity of weld metal, fewer impurities, and improved strength, toughness, and corrosion resistance of the weld. At the same time, the welding slag and fumes generated during welding fall down the fixed cylinder under the synergistic effect of gravity and the flow of argon gas. The argon gas guides the welding fumes and slag, which fall through the fixed cylinder and pipe body to the side near the bottom plate.

[0031] 2. This invention, by setting up a welding assembly, allows the outer scraper to scrape the inner side of the outer shell during welding, removing welding slag and fumes adhering to the inner side of the outer shell. Ultimately, the welding slag and fumes are scraped into the inside of the pipe body, preventing blockage of the outer shell. At the same time, the inner scraper rotates, scraping the outer side of the fixed cylinder, removing fumes and welding slag adhering to the surface of the fixed cylinder, which then fall onto the inner side of the outer shell and are swept into the inside of the pipe body as the outer scraper rotates. Thus, the cleaning of the outer shell and the fixed cylinder is completed simultaneously with welding.

[0032] 3. The present invention sets up a fixing component, a fixing ring plate contacts the pipe, and then the fixing ring plate deforms to cover the surface of the pipe, thereby completing the fixing. The elastic fixing ring plate can fix pipes of different sizes, and the hollow fixing ring plate can deform better, resulting in a better fixing effect.

[0033] 4. This invention uses a guide assembly where two V-shaped plates approach each other to fix the pipe. The V-shaped plates compress the pipe, causing deformation and thus adhering to the pipe surface for better fixation. The spring plate provides support during the deformation of the V-shaped plates. As the guide plate moves, it stretches the spring, causing it to rotate. The rotated V-shaped plate is parallel to the base plate. When the pipe is unloaded, the spring's restoring force breaks the balance of the upright pipe, ensuring that each pipe tilts in the fixed direction. This ensures stable unloading while fixing the pipe. Due to inertia, the pipe falls to the top of the base plate, where the spring rotates to cushion the fall and prevent damage. Attached Figure Description

[0034] To better understand this disclosure, reference may be made to the embodiments shown in the following figures. Components in the figures are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of this disclosure. Additionally, related elements or components may have different arrangements as known in the art. Furthermore, in the figures, the same reference numerals denote the same or similar components in various figures. Wherein:

[0035] Figure 1 This is a schematic diagram of the large-diameter TA31 pipe annular cross-section welding equipment of the present invention;

[0036] Figure 2 This is a schematic diagram of the welding device structure of the present invention;

[0037] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixed cylinder of the present invention;

[0038] Figure 4 This is a schematic diagram of the welding assembly structure of the present invention;

[0039] Figure 5 This is a schematic diagram of the outer scraper structure of the present invention;

[0040] Figure 6 This is a schematic cross-sectional view of the connecting plate of the present invention;

[0041] Figure 7 This is a schematic diagram of the drive component structure of the present invention;

[0042] Figure 8 This is a schematic diagram of the fixed component structure of the present invention;

[0043] Figure 9 This is a schematic diagram of the feeding assembly structure of the present invention;

[0044] Figure 10 This is a schematic diagram of the guiding component structure of the present invention;

[0045] Figure 11 This is a schematic diagram of the V-shaped plate structure of the present invention;

[0046] Figure 12 This invention relates to a welding method for the annular cross-section of large-diameter TA31 pipes.

[0047] The annotations in the attached figures are explained as follows:

[0048] 1. Base plate; 2. Support leg; 3. Welding device; 31. Fixed cylinder; 32. Lifting assembly; 321. Lifting telescopic rod; 322. Connecting sleeve; 323. Bracket; 33. Welding mechanism; 331. Outer shell; 332. Connecting pipe; 333. Welding assembly; 3331. Outer scraper; 3332. Connecting plate; 3333. Telescopic sleeve; 3334. Welding plate; 3335. Welder; 3336. Welding telescopic rod; 3337. Inner scraper; 334. Drive assembly; 3341. Outer ring cylinder; 3342. Gear ring; 3343. Gear; 3 344. Protective cover; 3345. Column; 3346. Rotating shaft; 3347. Motor; 3348. Fixing sleeve; 335. Guide assembly; 3351. Side plate; 3352. Guide telescopic rod; 3353. Guide plate; 3354. V-shaped plate; 3355. Spring plate; 3356. Spring; 336. Tube body; 337. Fixing plate; 34. Plate body; 35. Feeding assembly; 351. Feeding cylinder; 352. Connecting rod; 353. Feeding hole; 36. Fixing assembly; 361. Fixing telescopic rod; 362. Fixing block; 363. Fixing ring plate. Detailed Implementation

[0049] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0050] The diameter of large-diameter TA31 pipes can be greater than or equal to 100mm. For example, the diameter of large-diameter TA31 pipes can be 100mm, 150mm, 200mm, 250mm, 300mm, 400mm, 500mm, 600mm, 700mm or 800mm, etc.

[0051] Please see Figures 1-12 This invention relates to a welding device and welding method for a large-diameter TA31 pipe with an annular cross section.

[0052] Combination Figures 1 to 3 As shown, the welding equipment for the annular section of large-diameter TA31 pipe includes:

[0053] The base plate 1 has a support leg 2 fixedly connected to its bottom, and a welding device 3 fixedly connected to the side of the base plate 1 away from the support leg 2.

[0054] The welding device 3 includes:

[0055] Two fixing cylinders 31 are symmetrically arranged on the top of the base plate 1, and fixing components 36 are fixedly connected inside the two fixing cylinders 31.

[0056] Welding mechanism 33, the inner side of welding mechanism 33 is fixedly connected to the outer side of fixed cylinder 31;

[0057] The lifting assembly 32 is fixedly connected to the side of the base plate 1 away from the support leg 2, and the side of the lifting assembly 32 away from the base plate 1 is fixedly connected to the outer side of the fixed cylinder 31 away from the base plate 1. The outer side of the fixed cylinder 31 near the base plate 1 is fixedly connected to the plate 34.

[0058] The feeding assembly 35 is fixedly connected to the side of the base plate 1 away from the plate body 34.

[0059] Insert the pipe into the fixing cylinder 31 furthest from the base plate 1. The pipe slides along the fixing cylinder 31 furthest from the base plate 1 into another fixing cylinder 31. Activate the lifting assembly 32, which sequentially raises the upper fixing cylinder 31, the welding mechanism 33, the lower fixing cylinder 31, and the plate 34. The fixing cylinders 31 and the pipe move relative to each other until the end of the pipe is positioned precisely in the middle of the two fixing cylinders 31. Activate the fixing assembly 36 inside the fixing cylinder 31 closest to the base plate 1 to secure the pipe. Then insert another pipe and activate the fixing assembly 36 inside the fixing cylinder 31 furthest from the base plate 1. Part 36 fixes the second pipe, and the ends of the two pipes are joined together. Welding mechanism 33 is started, and argon gas is filled into the welding mechanism 33 at the same time to act as a protective gas. The output end of welding mechanism 33 rotates to perform rotary welding on the annular cross section at the joint of the two pipes. The filling of argon gas can avoid the oxidation of materials caused by gaseous impurities such as oxygen and nitrogen during welding, so that the weld metal has high purity and few impurities, and improves the strength, toughness and corrosion resistance of the weld. At the same time, the welding slag and fumes generated by welding fall down along the fixed cylinder 31 under the synergistic effect of gravity and argon gas flow.

[0060] like Figure 3As shown, the welding mechanism 33 includes a housing 331, of which two housings 331 are provided. The ends of two fixed cylinders 31, which are close to each other, extend into the interior of the two housings 331, and the outer surfaces of the fixed cylinders 31 are fixedly connected to the inner surfaces of the housings 331. A connecting pipe 332 is fixedly connected to the side of the housing 331 away from the base plate 1, and several connecting pipes 332 are evenly distributed along the circumference of the housing 331. A welding assembly 333 is slidably connected at the intervals between the housings 331 and the fixed cylinders 31, and the welding assembly 333 extends along the housing 331. A plurality of components are evenly distributed around the periphery of the housing 331. A drive assembly 334 is fixedly connected to the outer side of the housing 331, and the output end of the drive assembly 334 is fixedly connected to the side of the welding assembly 333 away from the fixed cylinder 31. The side of the drive assembly 334 near the base plate 1 is fixedly connected to the side of the plate 34 away from the base plate 1. A guide assembly 335 is fixedly connected to the top of the base plate 1, and the guide assembly 335 is located directly below the fixed cylinder 31. A tube 336 is fixedly connected to the side of the housing 331 near the base plate 1, and the tube 336 penetrates through the base plate 31. The plate 34 and the tube 336 are inclined towards the side closer to the base plate 1. A fixing plate 337 is fixedly connected to the side of the base plate 1 away from the support leg 2. The outer side of the tube 336 is fixedly connected to the inner side of the fixing plate 337. Argon gas is connected through the connecting pipe 332. The argon gas enters the outer shell 331, the fixing cylinder 31, and the tube 336 through the connecting pipe 332. The mechanism for placing the tube blocks the end of the fixing cylinder 31 away from the base plate 1. The argon gas guides the welding fumes and slag. The fumes and slag pass through the fixing cylinder 31 and... The tube 336 falls to the side closer to the base plate 1, the drive assembly 334 is activated, the output end of the drive assembly 334 drives the welding assembly 333 to rotate, the welding assembly 333 is activated to weld the ends of the two tubes, the guide assembly 335 is activated to fix the tube, the lifting assembly 32 is activated and the tube is released, as the lifting assembly 32 rises, the welded tube is separated from the fixed cylinder 31, the guide assembly 335 rotates in one direction to complete the unloading of the tube, so that the tube is oriented unloading.

[0061] like Figure 4As shown, the welding assembly 333 includes an outer scraper 3331. The surface of the outer scraper 3331 is slidably connected to the inner surfaces of the two outer shells 331. A connecting plate 3332 is fixedly connected to the side of the outer scraper 3331 away from the outer shells 331. The side of the connecting plate 3332 away from the outer scraper 3331 is slidably connected to the side of the two fixed cylinders 31 that are close to each other. Welding telescopic rods 3336 are symmetrically arranged on the side of the connecting plate 3332 away from the outer scraper 3331. The surface of the welding telescopic rod 3336 is fixedly connected to the inner surface of the connecting plate 3332. A welding plate 3334 is fixedly connected to the side of the welding telescopic rod 3336 away from the connecting plate 3332, and the output end of the welding telescopic rod 3336 is fixedly connected to the welding plate 3334. 4. A welder 3335 is fixedly connected to the side away from the welding telescopic rod 3336. When the welding telescopic rod 3336 is activated, it drives the welding plate 3334 to move, thereby driving the welder 3335 to approach the joint of the two pipes, thus welding pipes of different diameters. The drive assembly 334 drives the outer scraper 3331 to rotate, thereby driving the connecting plate 3332, welding telescopic rod 3336, welding plate 3334, and welder 3335 to rotate, thus completing the welding of the annular section. At the same time as welding, the outer scraper 3331 scrapes the inner side of the outer shell 331, scraping off the welding slag and fumes adhering to the inner side of the outer shell 331, and finally scraping the welding slag and fumes into the inside of the pipe body 336 to prevent the outer shell 331 from being blocked.

[0062] like Figure 5 and Figure 6 As shown, a telescopic sleeve 3333 is provided at the interval between the connecting plate 3332 and the welding plate 3334. Both sides of the telescopic sleeve 3333 are fixedly connected to the sides of the connecting plate 3332 and the welding plate 3334 that are close to each other. Both ends of the outer scraper 3331 are fixedly connected to inner scrapers 3337. The sides of the two inner scrapers 3337 that are close to each other are fixedly connected to the surface of the connecting plate 3332. The surface of the connecting plate 3332 is slidably connected to the inner side of the fixed cylinder 31. The welding plate 3334 moves. The telescopic sleeve 3333 extends and retracts to prevent welding slag and fumes from contacting the welding telescopic rod 3336 and to prevent damage to the welding telescopic rod 3336. The outer scraper 3331 rotates, which drives the inner scraper 3337 to rotate, thereby scraping the outer side of the fixed cylinder 31, scraping off the fumes and welding slag adhering to the surface of the fixed cylinder 31, and letting them fall onto the inner side of the outer shell 331. As the outer scraper 3331 rotates, they are swept into the inside of the pipe body 336. At the same time as welding, the outer shell 331 and the fixed cylinder 31 are cleaned.

[0063] like Figure 7As shown, the drive assembly 334 includes an outer ring cylinder 3341. The inner side of the outer ring cylinder 3341 is slidably connected to the outer side of the outer shell 331, and the inner side of the outer ring cylinder 3341 is fixedly connected to the side of the outer scraper 3331 away from the connecting plate 3332. A gear ring 3342 is fixedly connected to the outer side of the outer ring cylinder 3341, and a gear 3343 is meshed with the outer side of the gear ring 3342. A rotating shaft 3346 is fixedly connected to the side of the gear 3343 near the plate 34. A motor 3347 is fixedly connected to the end of the rotating shaft 3346 away from the gear 3343, and the output end of the rotating shaft 3346 is fixedly connected to the output end of the motor 3347. When the motor 3347 is started, the output end of the motor 3347 drives the rotating shaft 3346 to rotate, which drives the gear 3343 to rotate, drives the gear ring 3342 to rotate, and drives the outer ring cylinder 3341 to rotate, thereby driving the drive assembly 3341 to rotate. The rotating outer scraper 3331 eventually drives the welder 3335 to rotate. The outer side of the outer ring cylinder 3341 is rotatably connected to the protective cover 3344. The end of the rotating shaft 3346 near the motor 3347 passes through the protective cover 3344, and the inner side of the protective cover 3344 is rotatably connected to the surface of the rotating shaft 3346. The side of the protective cover 3344 near the plate 34 is fixedly connected to the column 3345, and two columns 3345 are symmetrically arranged at the interval between the plate 34 and the protective cover 3344. The end of the column 3345 away from the protective cover 3344 is fixedly connected to the side of the plate 34 away from the bottom plate 1. The surface of the motor 3347 is fixedly connected to the fixing sleeve 3348, and the side of the fixing sleeve 3348 away from the motor 3347 is fixedly connected to the surface of the column 3345. The protective cover 3344 protects the gear ring 3342 and the gear 3343.

[0064] like Figure 8 As shown, the fixing component 36 includes a fixed telescopic rod 361, which is fixedly connected to the inner side of the fixing cylinder 31. Several fixed telescopic rods 361 are evenly arranged along the circumference of the fixing cylinder 31. A fixing block 362 is fixedly connected to the end of the fixed telescopic rod 361 away from the fixing cylinder 31. A fixing ring plate 363 is fixedly connected to the side of the fixing block 362 away from the fixed telescopic rod 361. The fixing ring plate 363 is made of elastic material and is hollow. When the fixed telescopic rod 361 is activated, it moves the fixing block 362, which in turn moves the fixing ring plate 363. The fixing ring plate 363 contacts the pipe and then deforms to cover the surface of the pipe, thus completing the fixing. The elastic fixing ring plate 363 can fix pipes of different sizes, and the hollow fixing ring plate 363 can deform better, resulting in a better fixing effect.

[0065] like Figure 9As shown, the lifting assembly 32 includes lifting telescopic rods 321, which are symmetrically arranged on the side of the base plate 1 away from the support leg 2. Each of the two lifting telescopic rods 321 is provided with a connecting sleeve 322 on the side away from the base plate 1. A bracket 323 is provided at the interval between the two connecting sleeves 322. The bracket 323 is fixedly connected to the side of the plate 34 away from the base plate 1, and the inner side of the connecting sleeve 322 is fixedly connected to the surface of the bracket 323. The inner side of the bracket 323 is fixedly connected to the outer side of the fixed cylinder 31 away from the plate 34. When the lifting telescopic rods 321 are activated, the lifting telescopic rods 321 drive the connecting sleeves 322 to move, thereby driving the bracket 323, the plate 34 and the two fixed cylinders 31 to move, thereby completing the adjustment of the welding position and the unloading after welding.

[0066] like Figure 9 and Figure 10 As shown, the feeding assembly 35 includes a feeding cylinder 351, which is fixedly connected to the side of the base plate 1 away from the plate body 34 and is located directly below the fixed cylinder 31. A connecting rod 352 is fixedly connected to the outer side of the feeding cylinder 351, and the side of the connecting rod 352 away from the feeding cylinder 351 is fixedly connected to the support leg 2. A feeding hole 353 is opened on the surface of the base plate 1, and several feeding holes 353 are opened, which are located directly below the fixed cylinder 31. Welding slag and fumes fall along the fixed cylinder 31 and pass through the feeding holes 353, and finally through the feeding cylinder 351 to the bottom of the base plate 1, thus completing the feeding of welding waste.

[0067] like Figure 11As shown, side plates 3351 are provided at the interval between the plate body 34 and the base plate 1. Both side plates 3351 are fixedly connected to the side of the base plate 1 near the plate body 34. Guide telescopic rods 3352 are fixedly connected to the sides of the two side plates 3351 that are close to each other. A guide plate 3353 is rotatably connected to the end of the guide telescopic rod 3352 away from the side plate 3351. A V-shaped plate 3354 is provided on the side of the guide plate 3353 away from the guide telescopic rod 3352. The space between the V-shaped plate 3354 and the guide plate 3353 is... Two sets of spring plates 3355 are symmetrically arranged at the intervals, with several spring plates 3355 in each set. The two ends of each spring plate 3355 are fixedly connected to the sides of the V-shaped plate 3354 and the guide plate 3353 respectively. A spring 3356 is sleeved on the outside of the guide telescopic rod 3352. The two ends of the spring 3356 are fixedly connected to the sides of the side plate 3351 and the guide plate 3353 respectively. When the guide telescopic rod 3352 is activated, the two guide telescopic rods 3355... 2. As they move closer together, the guide plate 3353, spring plate 3355, and V-shaped plate 3354 move. The two V-shaped plates 3354 move closer together, thus fixing the pipe. The V-shaped plates 3354 compress the pipe, causing them to deform and adhere to the pipe surface, thus achieving better fixation. The spring plate 3355 is designed to deform when the V-shaped plates 3354 deform, providing support for the deformation of the V-shaped plates 3354. When the guide plate 3353 moves, it stimulates the spring 33... 56 is stretched, and the spring 3356 rotates while being stretched. After rotation, the V-shaped plate 3354 is parallel to the base plate 1. When the pipe is unloaded, the balance of the pipe after being erected is broken by the elastic force of the spring 3356 restoring its rotational deformation, thus ensuring that each pipe is tilted in a fixed direction. While fixing the pipe, it ensures stable unloading. Under the action of inertia, the pipe falls to the top of the base plate 1. Then the spring 3356 rotates, which buffers the rotation and fall of the pipe and prevents the pipe from being bumped.

[0068] Combination Figure 12 As shown, a welding method for a large-diameter TA31 pipe with an annular cross-section includes the following steps:

[0069] Step 1: Pipe fixing. Insert the pipe into the fixing cylinder 31 away from the base plate 1. The pipe slides along the fixing cylinder 31 away from the base plate 1 into another fixing cylinder 31. Activate the lifting telescopic rod 321. The lifting telescopic rod 321 moves the connecting sleeve 322, which in turn moves the bracket 323, the plate 34, and the two fixing cylinders 31. The fixing cylinders 31 and the pipe move relative to each other. Finally, the end of the pipe is located in the middle of the two fixing cylinders 31. Activate the fixing telescopic rod 361. The fixing telescopic rod 361 moves the fixing block 362, which in turn moves the fixing ring plate 363. The fixing ring plate 363 contacts the pipe and then deforms to cover the surface of the pipe, thus completing the fixing. Then insert another pipe and fix it in the same way. The ends of the two pipes are then joined.

[0070] Step 2, secondary fixation: Activate the guide telescopic rods 3352. The two guide telescopic rods 3352 move closer to each other, driving the guide plate 3353, spring plate 3355, and V-shaped plate 3354 to move. The two V-shaped plates 3354 move closer to each other, thereby fixing the pipe again.

[0071] Step 3: Introduce protective gas. Argon gas is introduced through connecting pipe 332. Argon gas enters the outer shell 331, fixed cylinder 31, and pipe body 336 through connecting pipe 332. The mechanism for placing the pipe blocks the end of the fixed cylinder 31 that is away from the base plate 1. Argon gas is introduced to act as a protective gas during welding.

[0072] Step 4: Start welding. Activate the welding telescopic rod 3336. The welding telescopic rod 3336 moves the welding plate 3334, thereby bringing the welder 3335 closer to the joint of the two pipes. Activate the motor 3347. The output end of the motor 3347 drives the rotating shaft 3346 to rotate, which in turn drives the gear 3343 to rotate, which in turn drives the gear ring 3342 to rotate, which in turn drives the outer ring cylinder 3341 to rotate, thereby driving the outer scraper 3331 to rotate. This, in turn, causes the connecting plate 3332, the welding telescopic rod 3336, the welding plate 3334, and the welder 3335 to rotate, thus completing the welding of the annular section.

[0073] Step 5: Inner wall cleaning. During welding, the outer scraper 3331 scrapes the inner side of the outer shell 331 to remove the welding slag and fumes adhering to the inner side of the outer shell 331. Finally, the welding slag and fumes are scraped into the inside of the pipe body 336. The outer scraper 3331 rotates, which drives the inner scraper 3337 to rotate, thereby scraping the outer side of the fixed cylinder 31 to remove the fumes and welding slag adhering to the surface of the fixed cylinder 31. The fumes and welding slag fall onto the inner side of the outer shell 331 and are swept into the inside of the pipe body 336 as the outer scraper 3331 rotates.

[0074] Step 6: Weld slag unloading. Argon gas guides the welding fumes and slag. The fumes and slag fall to the side near the bottom plate 1 through the fixed cylinder 31 and the pipe body 336. The slag and dust are discharged to the bottom of the bottom plate 1 through the unloading hole 353 and finally through the unloading cylinder 351, completing the unloading of welding waste.

[0075] Step 7: Pipe guiding. When the guide plate 3353 moves, it stretches the spring 3356. The spring 3356 rotates while being stretched. The rotated V-shaped plate 3354 is parallel to the base plate 1. When the pipe is unloaded, the balance of the pipe after it is erected is broken under the elastic force of the spring 3356 restoring its rotational deformation, and the pipe tilts in the fixed direction.

[0076] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A welding equipment for large-diameter TA31 pipe annular cross-section, characterized in that, include: A base plate (1) is provided, with a support leg (2) fixedly connected to its bottom. A welding device (3) is fixedly connected to the side of the base plate (1) away from the support leg (2). The welding device (3) includes: a fixing cylinder (31), two fixing cylinders (31) are symmetrically arranged on the top of the base plate (1), and a fixing component (36) is fixedly connected inside each of the two fixing cylinders (31); and a welding mechanism (33), the inner side of which is connected to the fixing cylinder (31). The outer side is fixedly connected; a lifting assembly (32), which is fixedly connected to the side of the base plate (1) away from the support leg (2), and the side of the lifting assembly (32) away from the base plate (1) is fixedly connected to the outer side of the fixing cylinder (31) away from the base plate (1), and a plate body (34) is fixedly connected to the outer side of the fixing cylinder (31) near the base plate (1); a feeding assembly (35), which is fixedly connected to the side of the base plate (1) away from the plate body (34); The welding mechanism (33) includes a housing (331), of which two housings (331) are provided. The ends of the two fixed cylinders (31) that are close to each other extend into the interior of the two housings (331), and the outer surfaces of the fixed cylinders (31) are fixedly connected to the inner surfaces of the housings (331). A connecting pipe (332) is fixedly connected to the side of the housing (331) away from the base plate (1), and several connecting pipes (332) are evenly distributed along the circumference of the housing (331). A welding assembly (333) is slidably connected at the interval between the housing (331) and the fixed cylinders (31), and several welding assemblies (333) are evenly distributed along the circumference of the housing (331). A driving assembly (334) is fixedly connected to the outer surface of the housing (331), and the driving assembly... The output end of (334) is fixedly connected to the welding assembly (333) on the side away from the fixed cylinder (31). The side of the drive assembly (334) near the base plate (1) is fixedly connected to the side of the plate body (34) away from the base plate (1). A guide assembly (335) is fixedly connected to the top of the base plate (1), and the guide assembly (335) is located directly below the fixed cylinder (31). A tube body (336) is fixedly connected to the side of the outer shell (331) near the base plate (1). The tube body (336) penetrates the plate body (34), and the tube body (336) is inclined towards the side near the base plate (1). A fixed plate (337) is fixedly connected to the side of the base plate (1) away from the support leg (2). The outer side of the tube body (336) is fixedly connected to the inner side of the fixed plate (337).

2. The welding equipment for a large-diameter TA31 pipe annular section according to claim 1, characterized in that... The welding assembly (333) includes an outer scraper (3331), the surface of which is slidably connected to the inner surfaces of the two outer shells (331). A connecting plate (3332) is fixedly connected to the side of the outer scraper (3331) away from the outer shells (331). The side of the connecting plate (3332) away from the outer scraper (3331) is slidably connected to the side of the two fixed cylinders (31) that are close to each other. The side of the connecting plate (3332) away from the outer scraper (3331) is slidably connected to the side of the two fixed cylinders (31) that are close to each other. The device is equipped with a welding telescopic rod (3336), the surface of which is fixedly connected to the inner side of the connecting plate (3332). A welding plate (3334) is fixedly connected to the side of the welding telescopic rod (3336) away from the connecting plate (3332), and the output end of the welding telescopic rod (3336) is fixedly connected to the welding plate (3334). A welder (3335) is fixedly connected to the side of the welding plate (3334) away from the welding telescopic rod (3336).

3. The welding equipment for a large-diameter TA31 pipe annular section according to claim 2, characterized in that... A telescopic sleeve (3333) is provided at the interval between the connecting plate (3332) and the welding plate (3334), and the two sides of the telescopic sleeve (3333) are fixedly connected to the side of the connecting plate (3332) and the side of the welding plate (3334) that are close to each other. Both ends of the outer scraper (3331) are fixedly connected to the inner scraper (3337), and the side of the two inner scrapers (3337) that are close to each other are fixedly connected to the surface of the connecting plate (3332). The surface of the connecting plate (3332) is slidably connected to the inner side of the fixed cylinder (31).

4. The large-diameter TA31 pipe annular section welding equipment according to claim 3, characterized in that, The drive assembly (334) includes an outer ring cylinder (3341). The inner side of the outer ring cylinder (3341) is slidably connected to the outer side of the outer shell (331), and the inner side of the outer ring cylinder (3341) is fixedly connected to the side of the outer scraper (3331) away from the connecting plate (3332). A gear ring (3342) is fixedly connected to the outer side of the outer ring cylinder (3341). A gear (3343) is meshed with the outer side of the gear ring (3342). A rotating shaft (3346) is fixedly connected to the side of the gear (3343) near the plate (34). A motor (3347) is fixedly connected to the end of the rotating shaft (3346) away from the gear (3343), and the output end of the rotating shaft (3346) is fixedly connected to the output end of the motor (3347). The outer side of the outer ring cylinder (3341) rotates. A protective cover (3344) is connected to the motor (3347). The end of the rotating shaft (3346) near the motor (3347) passes through the protective cover (3344), and the inner side of the protective cover (3344) is rotatably connected to the surface of the rotating shaft (3346). A column (3345) is fixedly connected to the side of the protective cover (3344) near the plate (34), and two columns (3345) are symmetrically arranged at the interval between the plate (34) and the protective cover (3344). The end of the column (3345) away from the protective cover (3344) is fixedly connected to the side of the plate (34) away from the base plate (1). A fixing sleeve (3348) is fixedly connected to the surface of the motor (3347), and the side of the fixing sleeve (3348) away from the motor (3347) is fixedly connected to the surface of the column (3345).

5. The large-diameter TA31 pipe annular section welding equipment according to claim 4, characterized in that, The fixing component (36) includes a fixing telescopic rod (361), which is fixedly connected to the inner side of the fixing cylinder (31). Several fixing telescopic rods (361) are evenly arranged along the circumference of the fixing cylinder (31). A fixing block (362) is fixedly connected to one end of the fixing telescopic rod (361) away from the fixing cylinder (31). A fixing ring plate (363) is fixedly connected to one side of the fixing block (362) away from the fixing telescopic rod (361). The fixing ring plate (363) is made of elastic material and is hollow.

6. The welding equipment for a large-diameter TA31 pipe annular section according to claim 5, characterized in that, The lifting assembly (32) includes lifting telescopic rods (321), which are symmetrically arranged on the side of the base plate (1) away from the support leg (2). Each of the two lifting telescopic rods (321) is provided with a connecting sleeve (322) on the side away from the base plate (1). A bracket (323) is provided at the interval between the two connecting sleeves (322). The bracket (323) is fixedly connected to the side of the plate (34) away from the base plate (1). The inner side of the connecting sleeve (322) is fixedly connected to the surface of the bracket (323). The inner side of the bracket (323) is fixedly connected to the outer side of the fixing cylinder (31) away from the plate (34).

7. The large-diameter TA31 pipe annular section welding equipment according to claim 6, characterized in that, The feeding assembly (35) includes a feeding cylinder (351), which is fixedly connected to the side of the base plate (1) away from the plate body (34) and is located directly below the fixed cylinder (31). A connecting rod (352) is fixedly connected to the outer side of the feeding cylinder (351), and the side of the connecting rod (352) away from the feeding cylinder (351) is fixedly connected to the support leg (2). A feeding hole (353) is opened on the surface of the base plate (1), and a plurality of feeding holes (353) are opened, and a plurality of feeding holes (353) are opened directly below the fixed cylinder (31).

8. The large-diameter TA31 pipe annular section welding equipment according to claim 7, characterized in that, Side plates (3351) are provided at the interval between the plate body (34) and the base plate (1). Both side plates (3351) are fixedly connected to the side of the base plate (1) near the plate body (34). Guide telescopic rods (3352) are fixedly connected to the sides of the two side plates (3351) that are close to each other. A guide plate (3353) is rotatably connected to the end of the guide telescopic rod (3352) away from the side plate (3351). A V-shaped plate (3354) is provided on the side of the guide plate (3353) away from the guide telescopic rod (3352). 354) A spring plate (3355) is symmetrically arranged at the interval between the guide plate (3353). There are two sets of spring plates (3355) symmetrically arranged, and each set of spring plates (3355) has a number of spring plates (3355). The two ends of the spring plate (3355) are fixedly connected to the side of the V-shaped plate (3354) and the guide plate (3353) that are close to each other. A spring (3356) is sleeved on the outside of the guide telescopic rod (3352). The two ends of the spring (3356) are fixedly connected to the side plate (3351) and the guide plate (3353) that are close to each other.

9. A welding method for a large-diameter TA31 pipe with an annular cross-section, characterized in that, The large-diameter TA31 pipe annular section welding equipment as described in claim 8 includes the following steps: Step 1: Pipe fixing. The pipe is inserted into the fixing cylinder (31) away from the bottom plate (1). The pipe slides along the fixing cylinder (31) away from the bottom plate (1) into another fixing cylinder (31). The lifting telescopic rod (321) is activated. The lifting telescopic rod (321) drives the connecting sleeve (322) to move, which in turn drives the bracket (323), plate (34), and two fixing cylinders (31) to move. The fixing cylinders (31) and the pipe move relative to each other. Finally, the end of the pipe is located in the middle of the two fixing cylinders (31). The fixing telescopic rod (361) is activated. The fixing telescopic rod (361) drives the fixing block (362) to move. The fixed ring plate (363) is moved, and the fixed ring plate (363) contacts the pipe. Then the fixed ring plate (363) deforms and covers the surface of the pipe, thus completing the fixation. Then another pipe is inserted and fixed in the same way. The ends of the two pipes are connected. Step 2, secondary fixation: the guide telescopic rod (3352) is activated. The two guide telescopic rods (3352) move closer to each other, driving the guide plate (3353), spring plate (3355), and V-shaped plate (3354) to move. The two V-shaped plates (3354) move closer to each other, thus fixing the pipe again. Step 3, protective gas is introduced: argon gas is connected through the connecting pipe (332). Argon gas enters the outer shell (3) through the connecting pipe (332). 31) Fixed cylinder (31), pipe body (336), the mechanism for placing the pipe blocks the end of the fixed cylinder (31) away from the bottom plate (1), and argon gas is introduced to act as a protective gas during welding; Step 4, start welding, start the welding telescopic rod (3336), the welding telescopic rod (3336) drives the welding plate (3334) to move, thereby driving the welder (3335) to approach the joint of the two pipes, start the motor (3347), the output end of the motor (3347) drives the rotating shaft (3346) to rotate, drives the gear (3343) to rotate, drives the gear ring (3342) to rotate, drives the outer ring cylinder (3341) to rotate, thereby driving the outer scraper (3331) to rotate, drives the connecting plate (3332), welding The telescopic rod (3336), welding plate (3334), and welding device (3335) rotate to complete the welding of the annular section; Step 5: Inner wall cleaning. While welding, the outer scraper (3331) scrapes the inner side of the outer shell (331) to remove the welding slag and fumes adhering to the inner side of the outer shell (331), and finally scrapes the welding slag and fumes into the inside of the pipe body (336). The outer scraper (3331) rotates, which drives the inner scraper (3337) to rotate, thereby scraping the outer side of the fixed cylinder (31) to remove the fumes and welding slag adhering to the surface of the fixed cylinder (31) and drop them onto the inner side of the outer shell (331), and sweep them into the inside of the pipe body (336) as the outer scraper (3331) rotates.Step Six: Welding Slag Discharge. Argon gas guides the welding fumes and slag. The fumes and slag fall through the fixed cylinder (31) and the pipe body (336) towards the side near the bottom plate (1). The welding slag and dust pass through the discharge hole (353) and are finally discharged to the bottom of the bottom plate (1) through the discharge cylinder (351), completing the discharge of welding waste. Step Seven: Pipe Guiding. When the guide plate (3353) moves, it stretches the spring (3356). The spring (3356) rotates while being stretched. The rotated V-shaped plate (3354) is parallel to the bottom plate (1). When the pipe is discharged, the balance of the pipe after being erected is broken under the elastic force of the spring (3356) restoring its rotational deformation, and the pipe tilts towards the fixed direction.

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