Pressure vessel welding butt joint device and welding method

Abstract

The present invention relates to the technical field of pressure vessel production, specifically to a pressure vessel welding and docking device and welding method, comprising a base, a pressure vessel is arranged in the middle of the base, a slope is arranged on the front side of the base, a transmission box is arranged at the lower right side of the base, a support frame is fixedly connected to the middle of the top of the base, a console is fixedly connected to the right side of the support frame, a lifting box is arranged inside the support frame, a welding machine is arranged on the lower left side of the lifting box, an adjustment box is fixedly connected to the top of the support frame, a linkage box is fixedly connected to the left side of the adjustment box, a pushing mechanism is arranged inside the adjustment box, a clamping mechanism is arranged inside the linkage box, and a rotating mechanism is arranged inside the transmission box. The present invention realizes the pushing of the welding machine through the pushing mechanism, and realizes the clamping, fixing and rotation of the pressure vessel through the clamping mechanism and the rotating mechanism, thereby improving the adjustability, stability and convenience of the device.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessel production, in particular to a pressure vessel welding butt joint device and a welding method. Background Art

[0002] A pressure vessel is a closed container that can withstand pressure. Pressure vessels are widely used, and they play an important role in many sectors such as industry, civil industry, military industry, and many fields of scientific research. Among them, they are most used in the chemical industry and petrochemical industry. In the chemical and petrochemical fields, pressure vessels are mainly used for heat transfer, mass transfer, reaction and other process processes, as well as storage and transportation of pressurized gas or liquefied gas. They are also widely used in other industrial and civil fields, such as air compressors, various special compressors and auxiliary machines of refrigeration compressors, among which coolers, buffers, oil-water separators, gas storage tanks, evaporators, liquid coolant storage tanks, etc. are all pressure vessels.

[0003] As a closed device used to contain gas or liquid and bear a certain pressure, pressure vessels place high demands on the structural strength and sealing of the container itself. Generally, thick metal plates are bent and connected, and the joints of the pressure vessels are welded by welding machines and other devices, so that the thick metal plates in the bent state form a complete cylindrical container.

[0004] The existing device mainly uses a machine tool to drive a welding machine to weld a pressure vessel. The existing technology is similar to a welding device for pressure vessel processing. The structure with patent number CN114871616A includes a related structural setting of a welding frame assembly and a welding rail matching assembly. A flexible guide rail with a specific corresponding arc is generated under the cooperation of a guide support and the surface of an object to be welded, so that the welding core can perform welding movement along an arc consistent with the surface to be welded. The welding accuracy and quality can be effectively improved by controlling the welding distance and angle, but the device still has areas that can be optimized.

[0005] The existing device mainly drives the welder to automatically weld along the seam of the container through a displacement mechanism, which makes it difficult for some devices to adjust the sliding height of the welder according to the diameter of the pressure vessel. Secondly, some devices mainly place the pressure vessel on a machine tool, which makes it difficult for some devices to push the pressure vessel to the displacement range of the welder, thereby causing some devices to be difficult to weld the edge of the pressure vessel joint. Finally, some devices mainly place the pressure vessel on rollers, which makes it difficult for some devices to drive the joint of the pressure vessel to rotate to the top, thereby causing some welders to be difficult to perform precise welding on the joint, reducing the working efficiency and practicality of the device. Therefore, in order to solve the above problems, a pressure vessel welding butt device and a welding method are proposed. Summary of the invention

[0006] The object of the present invention is to provide a pressure vessel welding and butt welding device and a welding method to solve the problem that the existing devices in the prior art mentioned in the above background technology mainly drive the welding machine to automatically weld along the seam of the container through a displacement mechanism, which makes it difficult for some devices to adjust the sliding height of the welding machine according to the diameter of the pressure vessel; secondly, some devices mainly place the pressure vessel on a machine tool, which makes it difficult for some devices to push the pressure vessel within the displacement range of the welding machine, thereby causing it difficult for some devices to weld the edge of the pressure vessel joint; finally, some devices mainly place the pressure vessel on a roller, which makes it difficult for some devices to drive the joint of the pressure vessel to rotate to the top, thereby causing it difficult for some welders to perform precise welding on the joint.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pressure vessel welding and butt-jointing device, comprising a base, a pressure vessel is arranged in the middle of the base, a slope is arranged on the front side of the base, a transmission box is arranged at the lower right side of the base, a support frame is fixedly connected to the middle of the top of the base, a control console is fixedly connected to the right side of the support frame, a lifting box is arranged inside the support frame, a welding machine is arranged on the lower left side of the lifting box, an adjustment box is fixedly connected to the top of the support frame, and a linkage box is fixedly connected to the left side of the adjustment box;

[0008] A pushing mechanism is provided inside the regulating box, and the pushing mechanism includes a first motor, and the bottom of the first motor is fixedly connected to the middle of the top of the regulating box. A clamping mechanism is provided inside the linkage box, and the clamping mechanism includes a driving wheel, and the driving wheel is arranged above the inside of the linkage box. A rotating mechanism is provided inside the transmission box, and the rotating mechanism includes a third motor, and the bottom of the third motor is fixedly connected to the middle of the top of the transmission box.

[0009] Preferably, a transmission shaft is fixedly connected to the middle of the bottom of the first motor, the bottom end of the transmission shaft passes through the adjusting box and is fixedly connected to the first bevel gear, the second bevel gear is meshingly connected below the first bevel gear, the inner wall of the second bevel gear is fixedly connected to the first symmetrical screw, and the right end of the first symmetrical screw is movably connected to the right side of the inner wall of the adjusting box.

[0010] Preferably, push screw sleeves are movably connected to both sides of the outer wall of the first symmetrical screw rod, the bottom end of the push screw sleeve passes through the support frame and is movably connected to a traction rod, and the bottom end of the traction rod is fixedly connected to both sides of the top of the lifting box.

[0011] Preferably, a guide screw is movably connected to the left side of the inner wall of the lifting box, the right end of the guide screw passes through the right side wall of the lifting box and is fixedly connected to a second motor, the left side of the second motor is fixedly connected to the right side of the lifting box, the outer wall of the guide screw is threadedly connected to a guide screw sleeve, the bottom of the outer wall of the guide screw sleeve passes through the lifting box and is fixedly connected to the middle of the top of the welding machine.

[0012] Preferably, the left end of the first symmetrical screw passes through the left side wall of the adjusting box and is movably connected to the middle right side of the driving wheel, the outer wall of the driving wheel is meshingly connected with a track, the lower inner wall of the track is meshingly connected with a driven wheel, the middle right side of the driven wheel is fixedly connected with a second symmetrical screw, and the right end of the second symmetrical screw passes through the left side wall of the base and is movably connected to the right side of the inner wall of the base.

[0013] Preferably, clamping screw sleeves are movably connected to both sides of the outer wall of the second symmetrical screw, and sliders are fixedly connected to the front and rear sides of the clamping screw sleeve. A limiting rod is inserted into the inner wall of the slider, and both ends of the limiting rod are movably connected to the front and rear sides of the inner wall of the base, and a clamping block is fixedly connected to the top of the clamping screw sleeve.

[0014] Preferably, a rotating shaft is fixedly connected to the middle of the bottom of the third motor, and the bottom end of the rotating shaft passes through a transmission box and is fixedly connected to a third bevel gear.

[0015] Preferably, a fourth bevel gear is meshingly connected below the third bevel gear, a worm is fixedly connected to the inner wall of the fourth bevel gear, and two ends of the worm are movably connected to the upper inner wall of the transmission case.

[0016] Preferably, worm wheels are meshingly connected on both sides below the outer wall of the worm, a roller is fixedly connected to the middle of the left side of the worm wheel, the left end of the roller passes through the right side wall of the base and is movably connected to the left side of the inner wall of the base, and the lower side of the outer wall of the pressure vessel is attached to the upper side of the outer wall of the roller.

[0017] A pressure vessel welding method comprises the following steps:

[0018] S1: Push the pressure vessel to the top of the roller inside the base through the ramp;

[0019] S2: driving the roller and the pressure vessel to rotate synchronously through the rotating mechanism, so that the weld of the pressure vessel is placed on the top;

[0020] S3: Pushing the lifting box and the welding machine to the welding position through the pushing mechanism;

[0021] S4: The clamping mechanism is linked to the pushing mechanism so that the clamping mechanism clamps the pressure vessel at the middle of the outer wall of the roller;

[0022] S5: Finally, the guide screw sleeve inside the pushing mechanism drives the welding machine to slide left and right, so that the welding machine performs welding operation on the pressure vessel.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention uses the first motor, transmission shaft, first bevel gear, second bevel gear, first symmetrical screw, pushing screw sleeve, traction rod, guide screw, second motor and guide screw sleeve and other structures in the pushing mechanism. When the welding machine needs to be pushed, the first motor is started by the console to drive the transmission shaft and the first bevel gear to rotate synchronously, the first bevel gear meshes to drive the second bevel gear and the first symmetrical screw to limit rotation, the first symmetrical screw drives the pushing screw sleeve and the top end of the traction rod to slide symmetrically away, and the bottom end of the traction rod drives the lifting box and the welding machine to descend to the welding position, and the second motor is started by the console, the guide screw driven by the second motor to limit rotation, the guide screw drives the guide screw sleeve to slide left and right, and the guide screw sleeve drives the welding machine to slide synchronously, so as to push the welding machine, so that some devices can adjust the sliding height of the welding machine according to the diameter of the pressure vessel, which is convenient for welding pressure vessels of different specifications, and improves the adjustability and practicality of the device.

[0025] 2. The present invention uses the structures of the driving wheel, track, driven wheel, second symmetrical screw, clamping screw sleeve, slider, limit rod and clamping block in the clamping mechanism. When the pressure vessel needs to be clamped, the first symmetrical screw drives the driving wheel to rotate synchronously, the driving wheel engages to drive the track and the driven wheel to rotate synchronously, the driven wheel drives the second symmetrical screw to rotate in a limited position, the second symmetrical screw drives the clamping screw sleeve to slide symmetrically, the clamping screw sleeve drives the slider to slide synchronously on the outer wall of the limit rod, and the clamping screw sleeve drives the clamping block to slide synchronously, so as to realize the clamping operation of the pressure vessel, so that part of the device can push the pressure vessel into the displacement range of the welding machine, which is convenient for part of the device to weld the edge of the joint of the pressure vessel, thereby improving the stability and practicality of the device.

[0026] 3. The present invention uses the third motor, rotating shaft, third bevel gear, fourth bevel gear, worm, worm wheel and roller in the rotating mechanism. When the pressure vessel needs to be rotated, the third motor is started through the console to drive the rotating shaft and the third bevel gear to rotate synchronously, the third bevel gear engages to drive the fourth bevel gear and the worm to rotate in a limited position, the worm engages to drive the worm wheel and the roller to rotate synchronously, the roller drives the pressure vessel to rotate, and the pressure vessel is rotated. The partial device can drive the joint of the pressure vessel to rotate to the top, which is convenient for some welders to perform precise welding on the joint that is difficult to perform, thereby improving the convenience and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front side perspective view of the structure of the present invention;

[0028] Figure 2 It is a front cross-sectional perspective view of the structure of the present invention;

[0029] Figure 3 It is a front cross-sectional stereoscopic view of the local structure of the support frame and the pushing mechanism of the present invention;

[0030] Figure 4 It is a front cross-sectional perspective view of the partial structure of the lifting box and the welding machine of the present invention;

[0031] Figure 5 It is a left side sectional stereoscopic view of the partial structure of the base and the clamping mechanism of the present invention;

[0032] Figure 6 It is a top-view cross-sectional stereoscopic diagram of the partial structure of the base and the clamping mechanism of the present invention;

[0033] Figure 7 It is a right side sectional stereoscopic view of the partial structure of the transmission box and the rotating mechanism of the present invention.

[0034] In the figure: 101, base; 102, pressure vessel; 103, ramp; 104, transmission box; 105, support frame; 106, control console; 107, lifting box; 108, welding machine; 109, adjustment box; 110, linkage box; 2, pushing mechanism; 201, first motor; 202, transmission shaft; 203, first bevel gear; 204, second bevel gear; 205, first symmetrical screw; 206, pushing screw sleeve; 207, traction rod; 208, guide 1. symmetrical screw; 209. second motor; 210. guide screw sleeve; 3. clamping mechanism; 301. driving wheel; 302. crawler track; 303. driven wheel; 304. second symmetrical screw; 305. clamping screw sleeve; 306. slider; 307. limit rod; 308. clamping block; 4. rotating mechanism; 401. third motor; 402. rotating shaft; 403. third bevel gear; 404. fourth bevel gear; 405. worm; 406. worm wheel; 407. roller. DETAILED DESCRIPTION

[0035] 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.

[0036] See also Figure 1-7 , an embodiment provided by the present invention:

[0037] A pressure vessel welding and docking device comprises a base 101, a pressure vessel 102 is arranged in the middle of the base 101, a slope 103 is arranged on the front side of the base 101, a transmission box 104 is arranged at the lower right side of the base 101, a support frame 105 is fixedly connected to the middle of the top of the base 101, a control console 106 is fixedly connected to the right side of the support frame 105, a lifting box 107 is arranged inside the support frame 105, a welding machine 108 is arranged at the lower left side of the lifting box 107, an adjustment box 109 is fixedly connected to the top of the support frame 105, and a linkage box 110 is fixedly connected to the left side of the adjustment box 109;

[0038] A pushing mechanism 2 is provided inside the adjusting box 109, and the pushing mechanism 2 includes a first motor 201, the bottom of the first motor 201 is fixedly connected to the top middle of the adjusting box 109, the bottom middle of the first motor 201 is fixedly connected with a transmission shaft 202, the bottom end of the transmission shaft 202 passes through the adjusting box 109 and is fixedly connected with a first bevel gear 203, the lower part of the first bevel gear 203 is meshedly connected with a second bevel gear 204, the inner wall of the second bevel gear 204 is fixedly connected with a first symmetrical screw 205, the right end of the first symmetrical screw 205 is movably connected to the right side of the inner wall of the adjusting box 109, through this design, it is achieved that the first motor 201 drives the first symmetrical screw 205 to rotate in a limited position, the outer walls of the first symmetrical screw 205 are movably connected with pushing screw sleeves 206 on both sides, and the bottom end of the pushing screw sleeve 206 passes through the support frame 105. A traction rod 207 is movably connected thereto, and the bottom ends of the traction rod 207 are fixedly connected to both sides of the top of the lifting box 107. Through this design, the traction rod 207 drives the lifting box 107 to slide up and down. A guide screw 208 is movably connected to the left side of the inner wall of the lifting box 107. The right end of the guide screw 208 passes through the right side wall of the lifting box 107 and is fixedly connected to a second motor 209. The left side of the second motor 209 is fixedly connected to the right side of the lifting box 107. A guide screw sleeve 210 is threadedly connected to the outer wall of the guide screw 208. The bottom of the outer wall of the guide screw sleeve 210 passes through the lifting box 107 and is fixedly connected to the middle of the top of the welding machine 108. Through this design, the second motor 209 drives the guide screw sleeve 210 to slide left and right, so that the guide screw sleeve 210 drives the welding machine 108 to perform sliding welding on the joint of the pressure vessel 102.

[0039] The linkage box 110 is provided with a clamping mechanism 3 inside, and the clamping mechanism 3 includes a driving wheel 301, and the driving wheel 301 is provided at the upper part of the linkage box 110. The left end of the first symmetrical screw 205 passes through the left side wall of the adjustment box 109 and is movably connected to the middle part of the right side of the driving wheel 301. The outer wall of the driving wheel 301 is meshedly connected with a crawler 302, and the lower part of the inner wall of the crawler 302 is meshedly connected with a driven wheel 303. The middle part of the right side of the driven wheel 303 is fixedly connected with a second symmetrical screw 304, and the right end of the second symmetrical screw 304 passes through the left side wall of the base 101 and is movably connected to the right side of the inner wall of the base 101. This design enables the driving wheel 301 to drive the second symmetrical screw 304 to rotate in a limited position, and the clamping screw sleeves 305 are movably connected to the two sides of the outer wall of the second symmetrical screw 304, and the front and rear sides of the clamping screw sleeve 305 are fixedly connected to the slider 306, and the inner wall of the slider 306 is inserted with a limiting rod 307, and the two ends of the limiting rod 307 are movably connected to the front and rear sides of the inner wall of the base 101, and the top of the clamping screw sleeve 305 is fixedly connected to the clamping block 308. Through this design, the clamping screw sleeve 305 drives the clamping block 308 to slide symmetrically, so that the clamping block 308 drives the pressure vessel 102 to be placed in the middle of the outer wall of the roller 407.

[0040] The transmission box 104 is provided with a rotating mechanism 4 inside, and the rotating mechanism 4 includes a third motor 401. The bottom of the third motor 401 is fixedly connected to the top middle of the transmission box 104. The bottom middle of the third motor 401 is fixedly connected with a rotating shaft 402. The bottom end of the rotating shaft 402 passes through the transmission box 104 and is fixedly connected with a third bevel gear 403. Through this design, the third motor 401 drives the third bevel gear 403 to rotate synchronously. The fourth bevel gear 404 is meshed and connected below the third bevel gear 403. The inner wall of the fourth bevel gear 404 is fixedly connected with a worm 405. The worm 405 is fixedly connected to the inner wall of the worm 405. The two ends of 405 are movably connected to the upper part of the inner wall of the transmission box 104. Through this design, the fourth bevel gear 404 drives the worm 405 to rotate in a limited position. The lower sides of the outer wall of the worm 405 are meshingly connected with worm wheels 406. A roller 407 is fixedly connected to the middle part of the left side of the worm wheel 406. The left end of the roller 407 passes through the right side wall of the base 101 and is movably connected to the left side of the inner wall of the base 101. The lower part of the outer wall of the pressure vessel 102 is attached to the upper part of the outer wall of the roller 407. Through this design, the roller 407 drives the pressure vessel 102 to rotate, so that the joint of the pressure vessel 102 is placed on the top.

[0041] A pressure vessel welding method comprises the following steps:

[0042] S1: Push the pressure vessel 102 to the top of the roller 407 inside the base 101 through the ramp 103;

[0043] S2: driving the roller 407 and the pressure vessel 102 to rotate synchronously through the rotating mechanism 4, so that the weld of the pressure vessel 102 is placed on the top;

[0044] S3: Pushing the lifting box 107 and the welding machine 108 to the welding position through the pushing mechanism 2;

[0045] S4: The pushing mechanism 2 is linked to the clamping mechanism 3, so that the clamping mechanism 3 clamps the pressure container 102 at the middle of the outer wall of the roller 407;

[0046] S5: Finally, the guide screw sleeve 210 inside the pushing mechanism 2 drives the welding machine 108 to slide left and right, so that the welding machine 108 performs welding operation on the pressure vessel 102.

[0047] Working principle: when the welding machine 108 needs to be pushed, first start the first motor 201 through the control console 106, the first motor 201 drives the transmission shaft 202 to rotate, the transmission shaft 202 drives the first bevel gear 203 to rotate synchronously, the first bevel gear 203 engages to drive the second bevel gear 204 to rotate, the second bevel gear 204 drives the first symmetrical screw 205 to limit rotation, the first symmetrical screw 205 drives the push screw sleeve 206 to slide symmetrically away, the push screw sleeve 206 drives the top end of the traction rod 207 to slide synchronously, the bottom end of the traction rod 207 drives the lifting box 107 and the welding machine 108 to descend to the welding position, and then start the second motor 209 through the control console 106, the guide screw 208 driven by the second motor 209 to limit rotation, the guide screw 208 drives the guide screw sleeve 210 to slide left and right, the guide screw sleeve 210 drives the welding machine 108 to slide synchronously, and the pushing operation of the welding machine 108 is realized.

[0048] When the pressure vessel 102 needs to be clamped, the first symmetrical screw 205 is first used to drive the driving wheel 301 to rotate synchronously, the driving wheel 301 engages and drives the track 302 to rotate, the track 302 drives the driven wheel 303 to rotate synchronously, the driven wheel 303 drives the second symmetrical screw 304 to rotate in a limited position, the second symmetrical screw 304 drives the clamping screw sleeve 305 to slide symmetrically, the clamping screw sleeve 305 drives the slider 306 to slide synchronously on the outer wall of the limit rod 307, and at the same time, the clamping screw sleeve 305 drives the clamping block 308 to slide synchronously, thereby realizing the clamping operation of the pressure vessel 102.

[0049] When the pressure vessel 102 needs to be rotated, the third motor 401 is first started through the control console 106. The third motor 401 drives the rotating shaft 402 to rotate, and the rotating shaft 402 drives the third bevel gear 403 to rotate synchronously. The third bevel gear 403 engages to drive the fourth bevel gear 404 to rotate. The fourth bevel gear 404 drives the worm 405 to rotate in a limited position. The worm 405 engages to drive the worm wheel 406 to rotate synchronously. The worm wheel 406 drives the roller 407 to rotate synchronously. The roller 407 drives the pressure vessel 102 to rotate, thereby realizing the rotation operation of the pressure vessel 102.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A pressure vessel welding butt joint device, comprising a base (101), a pressure vessel (102) being arranged in the middle of the base (101), and a slope (103) being arranged on the front side of the base (101), characterized in that: A transmission box (104) is provided at the lower right side of the base (101); a support frame (105) is fixedly connected to the middle of the top of the base (101); a control console (106) is fixedly connected to the right side of the support frame (105); a lifting box (107) is provided inside the support frame (105); a welding machine (108) is provided at the lower left side of the lifting box (107); an adjustment box (109) is fixedly connected to the top of the support frame (105); and a linkage box (110) is fixedly connected to the left side of the adjustment box (109); A pushing mechanism (2) is provided inside the regulating box (109), and the pushing mechanism (2) comprises a first motor (201), the bottom of the first motor (201) is fixedly connected to the middle of the top of the regulating box (109), the middle of the bottom of the first motor (201) is fixedly connected to a transmission shaft (202), the bottom end of the transmission shaft (202) passes through the regulating box (109) and is fixedly connected to a first bevel gear (203), the bottom of the first bevel gear (203) is meshingly connected to a second bevel gear (204), the inner wall of the second bevel gear (204) is fixedly connected to a first symmetrical screw rod (205), the right end of the first symmetrical screw rod (205) is movably connected to the right side of the inner wall of the regulating box (109), and the outer wall of the first symmetrical screw rod (205) is fixedly connected to the right side of the inner wall of the regulating box (109), and the outer wall of the first symmetrical screw rod (205) is fixedly connected to the right side of the inner wall of the regulating box (109). The side of the lifting box (107) is movably connected with a push screw sleeve (206), the bottom end of the push screw sleeve (206) passes through the support frame (105) and is movably connected to a traction rod (207), the bottom end of the traction rod (207) is fixedly connected to the top two sides of the lifting box (107), the left side of the inner wall of the lifting box (107) is movably connected with a guide screw (208), the right end of the guide screw (208) passes through the right side wall of the lifting box (107) and is fixedly connected to a second motor (209), the left side of the second motor (209) is fixedly connected to the right side of the lifting box (107), the outer wall of the guide screw (208) is threadedly connected with a guide screw sleeve (210), the bottom of the outer wall of the guide screw sleeve (210) passes through the lifting box (107) and is fixedly connected to the middle of the top of the welding machine (108); A clamping mechanism (3) is provided inside the linkage box (110), the clamping mechanism (3) comprising a driving wheel (301), the driving wheel (301) being arranged above the inside of the linkage box (110), a rotating mechanism (4) is provided inside the transmission box (104), the rotating mechanism (4) comprising a third motor (401), the bottom of the third motor (401) being fixedly connected to the middle of the top of the transmission box (104), a rotating shaft (402) being fixedly connected to the middle of the bottom of the third motor (401), the bottom end of the rotating shaft (402) passing through the transmission box (104) and being fixedly connected to a third bevel gear (403).

2. A pressure vessel welding butt joint device according to claim 1, characterized in that: The left end of the first symmetrical screw rod (205) passes through the left side wall of the adjustment box (109) and is movably connected to the middle part of the right side of the driving wheel (301); the outer wall of the driving wheel (301) is meshedly connected with a crawler belt (302); the lower part of the inner wall of the crawler belt (302) is meshedly connected with a driven wheel (303); the middle part of the right side of the driven wheel (303) is fixedly connected with a second symmetrical screw rod (304); the right end of the second symmetrical screw rod (304) passes through the left side wall of the base (101) and is movably connected to the right side of the inner wall of the base (101).

3. A pressure vessel welding butt joint device according to claim 2, characterized in that: The outer walls of the second symmetrical screw rod (304) are movably connected to clamping screw sleeves (305), the front and rear sides of the clamping screw sleeve (305) are fixedly connected to sliders (306), the inner wall of the slider (306) is provided with a limit rod (307), the two ends of the limit rod (307) are movably connected to the front and rear sides of the inner wall of the base (101), and the top of the clamping screw sleeve (305) is fixedly connected to a clamping block (308).

4. A pressure vessel welding butt joint device according to claim 1, characterized in that: A fourth bevel gear (404) is meshingly connected below the third bevel gear (403), a worm (405) is fixedly connected to the inner wall of the fourth bevel gear (404), and two ends of the worm (405) are movably connected to the upper inner wall of the transmission box (104).

5. A pressure vessel welding butt joint device according to claim 4, characterized in that: The lower sides of the outer wall of the worm (405) are meshingly connected with worm wheels (406), the middle part of the left side of the worm wheel (406) is fixedly connected with a roller (407), the left end of the roller (407) passes through the right side wall of the base (101) and is movably connected to the left side of the inner wall of the base (101), and the lower side of the outer wall of the pressure vessel (102) is attached to the upper side of the outer wall of the roller (407).

6. A welding method using the pressure vessel welding butt device according to claim 1, characterized in that: The steps include: S1: Pushing the pressure container (102) to the top of the roller (407) inside the base (101) through the ramp (103); S2: driving the roller (407) and the pressure vessel (102) to rotate synchronously via the rotating mechanism (4), so that the weld of the pressure vessel (102) is placed at the top; S3: pushing the lifting box (107) and the welding machine (108) to the welding position through the pushing mechanism (2); S4: The pushing mechanism (2) is linked to the clamping mechanism (3), so that the clamping mechanism (3) clamps the pressure container (102) at the middle of the outer wall of the roller (407); S5: Finally, the guide screw sleeve (210) inside the pushing mechanism (2) drives the welding machine (108) to slide left and right, so that the welding machine (108) performs a welding operation on the pressure container (102).

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