Welding process for welding vertical circular seam of pressure vessel
By designing a welding process including abutment, welding components and placing components, the problem that traditional welding devices cannot weld the inner wall and angle of the pressure vessel cannot adapt to different container shapes is solved, and efficient and flexible welding effects are achieved.
Patent Information
- Application Number
- CN202411841585.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-02-18
AI Technical Summary
Traditional ring seam welding devices cannot weld the inner wall of the pressure vessel, and the fixed-mounted welding head angle cannot adapt to pressure vessels of different shapes and sizes, resulting in inflexible production process.
A welding process including abutment, welding assembly and placing assembly is designed. By running the electric cylinder and motor, flexible welding of the inner and outer walls of the pressure vessel is achieved, and the angle of the welding gun is adjusted to adapt to different types of different types through the cooperation of gears and sliders. Container of shape size.
It realizes efficient welding of the inner and outer walls of the pressure vessel, improves the flexibility and controllability of the welding process, and ensures welding quality and sealing performance.
Smart Images
Figure CN119457546A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of welding devices, in particular to a welding process for welding vertical annular seams of pressure vessels. Background Art
[0002] Pressure vessels are closed equipment that bear a certain pressure and are usually used to store and transport substances such as gas, liquid or liquefied gas. They are widely used in various fields. In the production process of pressure vessels, girth welding devices are often required. Since pressure vessels need to work under high pressure and ensure the safe storage and transportation of internal substances, the quality and sealing of the welds are required to be high.
[0003] The girth welding device can weld the annular weld of the container so that it has sufficient strength and good sealing performance, effectively improves production efficiency, and ensures the stability and reliability of the weld. However, the traditional girth welding device can usually only perform welding operations on the surface of the pressure vessel, but cannot extend into the interior of the pressure vessel to weld the inner wall. At the same time, since the girth of the pressure vessel is placed on the cylindrical outer wall, the angle of the fixed installation welding head may not be able to adapt to pressure vessels of various shapes and sizes, resulting in the inflexibility of the production process. The lack of adjustability may make it more difficult to control the welding quality. In view of the above problems, the inventor proposes a welding process for welding the vertical girth of the pressure vessel to solve the above problems. Summary of the invention
[0004] In order to solve the problem that welding can only be performed on the surface of the pressure vessel but it is impossible to reach into the interior of the pressure vessel to weld the inner wall, and the angle of the fixedly installed welding head may not be able to adapt to pressure vessels of various shapes and sizes, resulting in the inflexibility of the production process; the purpose of the present invention is to provide a welding process for welding vertical annular seams of pressure vessels.
[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a welding process for welding vertical annular seams of pressure vessels, comprising a base, a welding assembly is fixedly connected to the center of the top of the base, an annular groove is opened near the center of the top of the base, a rotating barrel is slidably connected inside the annular groove, a connecting plate is rotatably connected to the center of the bottom end of the base, and the bottom end of the rotating barrel is fixedly connected to the connecting plate, a motor is fixedly connected to the center below the base, the output end of the motor is fixedly connected to the connecting plate, a sleeve shaft is rotatably connected to the outer ring of the rotating barrel and near the top, and a placement assembly is fixedly connected to the top of the sleeve shaft.
[0006] Preferably, the placement component includes a base plate, and the bottom end of the base plate is fixedly connected to the sleeve shaft, a motor 1 is provided inside the rotating barrel, an output end of the motor 1 is fixedly connected to the sleeve shaft, and a heat dissipation hole is opened on the outer ring of the rotating barrel.
[0007] Preferably, the top of the substrate is symmetrically slidably connected to a limit block near the center, the centers of both side ends of the substrate are symmetrically fixedly connected with L-shaped plates, the opposite ends of the two L-shaped plates are symmetrically fixedly connected with electric cylinder 1, and the output end of the electric cylinder 1 is fixedly connected to the limit block.
[0008] Preferably, the welding assembly includes a column, and the bottom end of the column is fixedly connected to the base, the two side ends of the column are symmetrically fixedly connected with side plates near the top, the top of the two side plates are symmetrically rotatably connected with a first gear near the column, the bottom end of the side plate is rotatably connected with a screw rod 1 near one side of the column, and the top end of the screw rod 1 passes through the side plate and is fixedly connected to the first gear, and the bottom end of the screw rod 1 is fixedly connected to a disc.
[0009] Preferably, an insertion shaft is symmetrically and slidably inserted near the center of the side plate, a mounting plate is fixedly connected between the bottom ends of the two insertion shafts, and the mounting plate is threadedly rotatably connected to a screw rod, a U-shaped frame is fixedly connected between the top ends of the two side plates, a long groove is opened at the center of the U-shaped frame, a U-shaped plate is slidably connected at the center of the top end of the U-shaped frame, a mounting box is fixedly connected at the center of the bottom end of the U-shaped plate, and a heat dissipation groove is opened on the outer ring of the mounting box, a second motor is arranged inside the mounting box, an output end of the second motor passes through the mounting box and is fixedly connected to a second gear, and the second gear can mesh with the two first gears, a vertical block is fixedly connected to the top of the U-shaped frame near the center of one side, an electric cylinder two is fixedly connected to the side end of the vertical block, and the output end of the electric cylinder two is fixedly connected to the U-shaped plate.
[0010] Preferably, one of the mounting plates is fixedly connected with a bracket one at the bottom end and near the center of one side, and a bracket two is rotatably connected to one side end of the bracket, a support plate one is fixedly connected to one side end of the bracket and located above the bracket two, a screw rod two is rotatably connected to the bottom end of the support plate one and near one side, a motor three is fixedly connected to the top end of the support plate one, an output end of the motor three passes through the support plate one and is fixedly connected to the screw rod two, a slider is rotatably connected to the outer ring of the screw rod two, a connecting rod is rotatably connected between the top end of the bracket two and the side end of the slider, a motor four is fixedly connected to the top end of the bracket two and near the center of one side, a welding gun body one is rotatably connected to the bottom end of the bracket two and near one side, and an output end of the motor four passes through the bracket two and is fixedly connected to the welding gun body one.
[0011] Preferably, a telescopic rod is fixedly connected to the top of the other mounting plate near the center, the output end of the telescopic rod passes through the mounting plate and is fixedly connected to a square box, and the square box is located at the center above the base plate, a rotating shaft 1 is rotatably connected to the top center of the inside of the square box, a rotating shaft 2 is rotatably connected to the outer ring of the rotating shaft 1 near the bottom, a worm gear 1 is fixedly connected to the outer ring of the rotating shaft 1 near the top, and a worm gear 2 is fixedly connected to the outer ring of the rotating shaft 2 near the top.
[0012] Preferably, a worm one is rotatably connected to the side wall of the square box near worm gear two, a motor six is fixedly connected to the side wall of the square box, an output end of the motor six is fixedly connected to the worm one, a worm two is rotatably connected to the side wall of the square box near the worm gear, a motor five is fixedly connected to the side wall of the square box, an output end of the motor five is fixedly connected to the worm two, a U-shaped frame is fixedly connected to the bottom end of the rotating shaft two, a bevel gear one is rotatably connected to the center of the bottom end inside the U-shaped frame, and the bottom end of the rotating shaft one passes through the U-shaped frame and is fixedly connected to the bevel gear one, a connecting shaft is rotatably connected between the side walls of the U-shaped frame, a bevel gear two is fixedly connected to the outer ring of the connecting shaft near one side, and the bevel gear two is meshed with the bevel gear one, a vertical plate is fixedly connected to the center of the outer ring of the connecting shaft, and a welding gun body two is fixedly connected to the bottom end of the vertical plate.
[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by operating two electric cylinders 1, and then under the mutual cooperation between the placement assembly and the welding gun body 1 and the welding gun body 2, the work of welding the inner and outer walls of the pressure vessel is realized, thereby solving the problem that the welding operation can only be performed on the surface of the pressure vessel, and it is impossible to extend into the interior of the pressure vessel to perform inner wall welding; 2. In the present invention, the electric cylinder 2 is operated, and then the welding assembly and the U-shaped frame and the welding gun body 1 and the welding gun body 2 cooperate with each other, so as to improve the flexibility of the welding gun body 1 and the welding gun body 2 during operation, thereby solving the problem that the angle of the fixed installation welding head may not be able to adapt to pressure vessels of various shapes and sizes, resulting in the inflexibility of the production process. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the base platform of the present invention.
[0017] Figure 3 It is a schematic diagram of the column structure of the present invention.
[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the square box of the present invention.
[0019] Figure 5 For the present invention Figure 2 Enlarged structural diagram at A in the middle.
[0020] Figure 6 For the present invention Figure 3 Enlarged structural diagram at B in the middle.
[0021] Figure 7 For the present invention Figure 4 Enlarged structural diagram at point C in the middle.
[0022] Figure 8 For the present invention Figure 3 Enlarged structural diagram at point D in the middle.
[0023] In the figure: 1, base; 101, annular groove; 102, rotating barrel; 103, connecting plate; 104, motor; 2, placement assembly; 201, base plate; 202, limit block; 203, L-shaped plate; 204, electric cylinder 1; 205, motor 1; 206, sleeve shaft; 3, welding assembly; 301, column; 302, side plate; 303, first gear; 304, screw rod 1; 305, plug shaft; 306, mounting plate; 307, U-shaped plate; 308, mounting box; 309, motor 2; 311, second gear; 312, vertical block; 313, electric cylinder 2; 314, bracket 1; 315. Bracket 2; 316. Support plate 1; 317. Screw rod 2; 318. Motor 3; 319. Slider; 320. Connecting rod; 321. Motor 4; 322. Welding gun body 1; 323. Telescopic rod; 324. Square box; 325. Rotating shaft 1; 326. Rotating shaft 2; 327. Worm gear 1; 328. Worm gear 2; 329. Worm gear 1; 330. Worm gear 2; 331. Motor 5; 332. Motor 6; 333. U-shaped frame; 334. Bevel gear 1; 335. Connecting shaft; 336. Bevel gear 2; 337. Vertical plate; 338. Welding gun body 2; 339. U-shaped frame. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0025] Example: Figure 1-8As shown, the present invention provides a technical solution: a welding process for welding vertical annular seams of pressure vessels, comprising a base 1, a welding assembly 3 is fixedly connected at the center of the top of the base 1, an annular groove 101 is opened near the center of the top of the base 1, a rotating barrel 102 is slidably connected inside the annular groove 101, a connecting plate 103 is rotatably connected at the center of the bottom end of the base 1, and the bottom end of the rotating barrel 102 is fixedly connected to the connecting plate 103, a motor 104 is fixedly connected at the center below the base 1, and the output end of the motor 104 is fixedly connected to the connecting plate 103, a sleeve shaft 206 is rotatably connected to the outer ring of the rotating barrel 102 and near the top, and a placement assembly 2 is fixedly connected to the top of the sleeve shaft 206.
[0026] The placement component 2 includes a substrate 201, and the bottom end of the substrate 201 is fixedly connected to the sleeve shaft 206. A motor 205 is arranged inside the rotating barrel 102, and the output end of the motor 205 is fixedly connected to the sleeve shaft 206. The outer ring of the rotating barrel 102 is provided with heat dissipation holes.
[0027] By adopting the above technical solution, the motor 1 205 is operated so that the fixedly connected sleeve shaft 206 is rotated, thereby causing the fixedly connected base plate 201 to rotate.
[0028] The top of the base plate 201 is symmetrically and slidably connected to the limit block 202 near the center, and the centers of both side ends of the base plate 201 are symmetrically and fixedly connected to the L-shaped plates 203. The opposite ends of the two L-shaped plates 203 are symmetrically and fixedly connected to the electric cylinder 1 204, and the output end of the electric cylinder 1 204 is fixedly connected to the limit block 202.
[0029] By adopting the above technical solution, the two electric cylinders 204 are operated, so that the fixedly connected limit blocks 202 move toward each other, thereby realizing the limit work of the pressure vessel.
[0030] The welding assembly 3 includes a column 301, and the bottom end of the column 301 is fixedly connected to the base 1, and the two side ends of the column 301 are symmetrically fixedly connected with side plates 302 near the top, and the top of the two side plates 302 are symmetrically rotatably connected with the first gear 303 near the column 301, and the bottom end of the side plate 302 is rotatably connected with a screw rod 304 near one side of the column 301, and the top end of the screw rod 304 passes through the side plate 302 and is fixedly connected to the first gear 303, and the bottom end of the screw rod 304 is fixedly connected to a disc.
[0031] By adopting the above technical solution, after the first gear 303 rotates, the fixedly connected screw rod 304 can be rotated, so that the mounting plate 306 connected by the threaded rotation can be raised or lowered.
[0032] An insertion shaft 305 is symmetrically and slidably inserted near the center of the side plate 302, a mounting plate 306 is fixedly connected between the bottom ends of the two insertion shafts 305, and the mounting plate 306 is threadedly rotatably connected to the screw rod 1 304, a U-shaped frame 339 is fixedly connected between the top ends of the two side plates 302, a long groove is opened at the center of the U-shaped frame 339, a U-shaped plate 307 is slidably connected at the center of the top end of the U-shaped frame 339, a mounting box 308 is fixedly connected at the center of the bottom end of the U-shaped plate 307, and a heat dissipation groove is opened on the outer ring of the mounting box 308, a motor 2 309 is arranged inside the mounting box 308, an output end of the motor 2 309 passes through the mounting box 308 and is fixedly connected to a second gear 311, and the second gear 311 can mesh with the two first gears 303, a vertical block 312 is fixedly connected to the top of the U-shaped frame 339 near the center of one side, an electric cylinder 2 313 is fixedly connected to the side end of the vertical block 312, and an output end of the electric cylinder 2 313 is fixedly connected to the U-shaped plate 307.
[0033] By adopting the above technical solution, a long groove is opened at the center of the U-shaped frame 339 to drive the second gear 311 to rotate and run the second motor 309, so that the fixedly connected second gear 311 rotates.
[0034] A bracket 1 314 is fixedly connected to the bottom end of one mounting plate 306 and near the center of one side, and a bracket 2 315 is rotatably connected to the side end of the bracket 1 314. A support plate 1 316 is fixedly connected to the side end of the bracket 1 314 and located above the bracket 2 315. A screw rod 2 317 is rotatably connected to the bottom end of the support plate 1 316 and near one side, and a motor 318 is fixedly connected to the top end of the support plate 1 316. The output end of the motor 318 passes through the support plate 1 316 and is fixedly connected to the screw rod 2 317. The outer circle thread of the screw rod 2 317 is rotatably connected to a slider 319. A connecting rod 320 is rotatably connected between the top end of the bracket 2 315 and the side end of the slider 319. A motor 4 321 is fixedly connected to the top end of the bracket 2 315 and near the center of one side, and a welding gun body 1 322 is rotatably connected to the bottom end of the bracket 2 315 and near one side, and the output end of the motor 4 321 passes through the bracket 2 315 and is fixedly connected to the welding gun body 1 322.
[0035] By adopting the above technical solution, the motor four 321 is operated, thereby causing the fixedly connected welding gun body one 322 to rotate, thereby achieving the effect of adjusting the angle of the welding gun body one 322.
[0036] A telescopic rod 323 is fixedly connected to the top near the center of the other mounting plate 306, and the output end of the telescopic rod 323 passes through the mounting plate 306 and is fixedly connected to a square box 324, and the square box 324 is located at the center above the base plate 201, and a rotating shaft 1 325 is rotatably connected to the top center of the inner top of the square box 324, and a rotating shaft 2 326 is rotatably connected to the outer ring of the rotating shaft 1 325 near the bottom, and a worm gear 1 327 is fixedly connected to the outer ring of the rotating shaft 1 325 and near the top, and a worm gear 2 328 is fixedly connected to the outer ring of the rotating shaft 2 326 and near the top.
[0037] By adopting the above technical solution, the second rotating shaft 326 rotates, so that the fixedly connected U-shaped frame 333 rotates, and after the first rotating shaft 325 rotates, the fixedly connected bevel gear 1 334 rotates.
[0038] The side wall of the square box 324 is rotatably connected to a worm 1 329 near the worm gear 2 328, the side wall of the square box 324 is fixedly connected to a motor 6 332, the output end of the motor 6 332 is fixedly connected to the worm 1 329, the side wall of the square box 324 is rotatably connected to a worm 2 330 near the worm gear 1 327, the side wall of the square box 324 is fixedly connected to a motor 5 331, the output end of the motor 5 331 is fixedly connected to the worm 2 330, the bottom end of the rotating shaft 2 326 is fixedly connected to a U-shaped frame 333, the U-shaped frame A bevel gear 334 is rotatably connected at the center of the bottom end of the interior of 333, and the bottom end of the rotating shaft 325 passes through the U-shaped frame 333 and is fixedly connected to the bevel gear 334. A connecting shaft 335 is rotatably connected between the side walls of the U-shaped frame 333. A bevel gear 336 is fixedly connected to the outer ring of the connecting shaft 335 near one side, and the bevel gear 336 is meshed with the bevel gear 334. A vertical plate 337 is fixedly connected to the center of the outer ring of the connecting shaft 335, and a welding gun body 338 is fixedly connected to the bottom end of the vertical plate 337.
[0039] By adopting the above technical solution, the motor five 331 is operated, so that the fixedly connected worm two 330 is rotated, and the working motor six 332 is operated, so that the fixedly connected worm one 329 is rotated.
[0040] Working principle: When the present invention is used, the pressure vessel to be welded is first placed between the two limit blocks 202, and then the two electric cylinders 1 204 are operated, so that the two fixedly connected limit blocks 202 move toward each other, thereby realizing the limiting work of the pressure vessel, and then the motor 104 is operated, so that the fixedly connected connecting plate 103 drives the rotating barrel 102 to rotate under the action of the annular groove 101, so as to realize the effect of moving the pressure vessel to below the welding gun body 1 322 and the welding gun body 2 338, and then the motor 1 205 is operated, so that the fixedly connected sleeve shaft 206 drives the base plate 201 to rotate, and the work of rotating the pressure vessel is completed, which is convenient for welding the pressure vessel, thereby realizing the work of welding the inner and outer walls of the pressure vessel, thereby solving the problem that the surface of the pressure vessel can only be welded, but it is impossible to reach into the interior of the pressure vessel to weld the inner wall; By running the electric cylinder 2 313, the fixedly connected U-shaped plate 307 is moved horizontally, and then the motor 2 309 is run to rotate the fixedly connected second gear 311, so that one of the meshingly connected first gears 303 is rotated, and the fixedly connected screw rod 1 304 is driven to rotate, so that the mounting plate 306 connected by the threaded rotation is lifted and lowered under the action of the plug shaft 305, thereby achieving the effect of lifting and lowering the welding gun body 1 322 and the welding gun body 2 338. When welding the outer wall of the pressure vessel, by running the motor 318 and the motor 4 321, the screw rod 2 317 is rotated and drives the slider 319 connected by the threaded rotation to be lifted and lowered, and then under the action of the connecting rod 320, the welding gun is adjusted. The effect of the angle of the main body 322 is to complete the welding work on the outer wall of the pressure vessel. When welding the inner wall of the pressure vessel, by running the motor five 331 and the motor six 332, the rotating shaft 1 325 drives the bevel gear 1 334 and the meshing bevel gear 2 336 to rotate, thereby adjusting the longitudinal angle of the welding gun body 2 338, and when the rotating shaft 2 326 rotates, the fixedly connected U-shaped frame 333 can be rotated to achieve the effect of adjusting the lateral angle of the welding gun body 2 338, thereby improving the flexibility of the welding gun body 1 322 and the welding gun body 2 338 during operation, and further solving the problem that the angle of the fixedly installed welding head may not be able to adapt to pressure vessels of various shapes and sizes, resulting in inflexibility in the production process.
[0041] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A welding process for welding a vertical annular seam of a pressure vessel, comprising a base (1), characterized in that: A welding assembly (3) is fixedly connected at the center of the top of the base (1); an annular groove (101) is provided near the center of the top of the base (1); a rotating barrel (102) is slidably connected inside the annular groove (101); a connecting plate (103) is rotatably connected at the center of the bottom of the base (1); the bottom end of the rotating barrel (102) is fixedly connected to the connecting plate (103); a motor (104) is fixedly connected at the center of the bottom of the base (1); the output end of the motor (104) is fixedly connected to the connecting plate (103); a sleeve shaft (206) is rotatably connected to the outer ring of the rotating barrel (102) near the top; and a placement assembly (2) is fixedly connected to the top of the sleeve shaft (206).
2. A welding process for welding a vertical annular seam of a pressure vessel as claimed in claim 1, characterized in that: The placement component (2) comprises a base plate (201), and the bottom end of the base plate (201) is fixedly connected to the sleeve shaft (206), a motor 1 (205) is provided inside the rotating barrel (102), an output end of the motor 1 (205) is fixedly connected to the sleeve shaft (206), and a heat dissipation hole is provided on the outer ring of the rotating barrel (102).
3. A welding process for welding a vertical annular seam of a pressure vessel as claimed in claim 2, characterized in that: The top of the base plate (201) is symmetrically slidably connected to a limit block (202) near the center, and L-shaped plates (203) are symmetrically fixedly connected to the centers of both side ends of the base plate (201), and electric cylinders (204) are symmetrically fixedly connected to the opposite ends of the two L-shaped plates (203), and the output end of the electric cylinder (204) is fixedly connected to the limit block (202).
4. A welding process for welding a vertical annular seam of a pressure vessel as claimed in claim 2, characterized in that: The welding assembly (3) comprises a column (301), wherein the bottom end of the column (301) is fixedly connected to the base (1), the two side ends of the column (301) are symmetrically fixedly connected to side plates (302) near the top, the top ends of the two side plates (302) and near the column (301) are symmetrically rotatably connected to a first gear (303), the bottom end of the side plate (302) and near one side of the column (301) is rotatably connected to a screw rod 1 (304), and the top end of the screw rod 1 (304) passes through the side plate (302) and is fixedly connected to the first gear (303), and the bottom end of the screw rod 1 (304) is fixedly connected to a disc.
5. A welding process for welding a vertical annular seam of a pressure vessel as claimed in claim 4, characterized in that: An insertion shaft (305) is symmetrically and slidably inserted near the center of the side plate (302), a mounting plate (306) is fixedly connected between the bottom ends of the two insertion shafts (305), and the mounting plate (306) is threadedly rotatably connected to the screw rod (304), a U-shaped frame (339) is fixedly connected between the top ends of the two side plates (302), a long groove is opened at the center of the inside of the U-shaped frame (339), a U-shaped plate (307) is slidably connected at the center of the top end of the U-shaped frame (339), and a mounting box (308) is fixedly connected at the center of the bottom end of the U-shaped plate (307). ), and a heat dissipation groove is provided on the outer ring of the installation box (308), a second motor (309) is provided inside the installation box (308), an output end of the second motor (309) passes through the installation box (308) and is fixedly connected to a second gear (311), and the second gear (311) can mesh with the two first gears (303), a vertical block (312) is fixedly connected to the top of the U-shaped frame (339) near the center of one side, a side end of the vertical block (312) is fixedly connected to an electric cylinder (313), and the output end of the electric cylinder (313) is fixedly connected to the U-shaped plate (307).
6. A welding process for welding vertical annular seams of pressure vessels as claimed in claim 5, characterized in that: A bracket 1 (314) is fixedly connected to the bottom end and near the center of one side of one of the mounting plates (306); a bracket 2 (315) is rotatably connected to the side end of the bracket 1 (314); a support plate 1 (316) is fixedly connected to the side end of the bracket 1 (314) and located above the bracket 2 (315); a screw rod 2 (317) is rotatably connected to the bottom end and near one side of the support plate 1 (316); a motor 3 (318) is fixedly connected to the top end of the support plate 1 (316); an output end of the motor 3 (318) passes through the support plate 1 (316). The second support bracket (315) is fixedly connected to the second screw rod (317); the outer ring thread of the second screw rod (317) is rotatably connected to the slider (319); a connecting rod (320) is rotatably connected between the top end of the second support bracket (315) and the side end of the slider (319); a motor four (321) is fixedly connected to the top end of the second support bracket (315) and near the center of one side; a welding gun body one (322) is rotatably connected to the bottom end of the second support bracket (315) and near one side; an output end of the motor four (321) passes through the second support bracket (315) and is fixedly connected to the welding gun body one (322).
7. A welding process for welding a vertical annular seam of a pressure vessel as claimed in claim 6, characterized in that: A telescopic rod (323) is fixedly connected to the top of the other mounting plate (306) near the center, and the output end of the telescopic rod (323) passes through the mounting plate (306) and is fixedly connected to a square box (324), and the square box (324) is located at the center above the base plate (201), and a rotating shaft (325) is rotatably connected to the top center of the inner top of the square box (324), and the outer ring of the rotating shaft (325) is sleeved near the bottom and is rotatably connected to the second rotating shaft (326), and the outer ring of the rotating shaft (325) is fixedly connected to the first worm gear (327) near the top, and the outer ring of the rotating shaft (326) is fixedly connected to the second worm gear (328) near the top.
8. A welding process for welding a vertical annular seam of a pressure vessel as claimed in claim 7, characterized in that: A worm one (329) is rotatably connected to the side wall of the square box (324) near the worm gear two (328); a motor six (332) is fixedly connected to the side wall of the square box (324); an output end of the motor six (332) is fixedly connected to the worm one (329); a worm two (330) is rotatably connected to the side wall of the square box (324) near the worm gear one (327); a motor five (331) is fixedly connected to the side wall of the square box (324); an output end of the motor five (331) is fixedly connected to the worm two (330); and a U-shaped frame (333) is fixedly connected to the bottom end of the rotating shaft two (326). A bevel gear 1 (334) is rotatably connected at the center of the bottom end of the U-shaped frame (333), and the bottom end of the rotating shaft 1 (325) passes through the U-shaped frame (333) and is fixedly connected to the bevel gear 1 (334). A connecting shaft (335) is rotatably connected between the side walls of the U-shaped frame (333), and a bevel gear 2 (336) is fixedly connected to the outer ring of the connecting shaft (335) and close to one side, and the bevel gear 2 (336) is meshed with the bevel gear 1 (334). A vertical plate (337) is fixedly connected at the center of the outer ring of the connecting shaft (335), and a welding gun body 2 (338) is fixedly connected to the bottom end of the vertical plate (337).