Welding device for outer wall of pressure container

Abstract

The invention relates to a pressure vessel outer wall welding device, and relates to the technical field of pressure vessel welding, the pressure vessel outer wall welding device comprises a driving assembly, a welding platform, an automatic welding device and a plurality of centering assemblies, the driving assembly comprises a driving motor, a rotating rod and a supporting seat, and the supporting seat is fixedly connected to the upper end face of the welding platform; the driving motor is fixedly connected to the vertically-arranged end of the supporting seat, one end of the rotating rod horizontally penetrates through the supporting seat and is coaxially and fixedly connected with the driving motor, the centering assembly comprises a mounting seat and a plurality of arc-shaped plates, and the arc-shaped plates are evenly distributed in the circumferential direction of the rotating rod and are in sliding connection with the mounting seat in the radial direction of the rotating rod; the mounting base and the rotating rod are coaxially arranged and rotate synchronously, the automatic welding device comprises a welding head and a stand column, and the welding head is in sliding connection with the stand column in the vertical direction. The welding device has the effects that the centering and positioning precision and efficiency of the two cylinders during welding are improved, and the welding quality and efficiency are improved.

Description

Technical Field

[0001] The present application relates to the technical field of pressure vessel welding, and in particular to a pressure vessel outer wall welding device. Background Art

[0002] Pressure vessels are common industrial equipment and are widely used in a number of important industries, including chemical and energy. For pressure vessel manufacturing, high-quality connections between components are key to ensuring their safe and reliable operation, especially when it comes to welding cylindrical components. Efficient and precise welding technology can greatly improve the overall performance and service life of pressure vessels, thereby promoting the stable development of related industries. Therefore, the precise connection between two cylinders during welding has always been a focus of researchers.

[0003] In traditional pressure vessel production, when two cylinders need to be welded together, various methods are often used to achieve centering and positioning. One method involves workers manually measuring and adjusting the positional relationship between the two cylinders using measuring tools. Workers use tools to check the relative position of the two cylinders and then fine-tune the angle and position. In other cases, clamps are used to assist in positioning. Clamps of varying sizes are used to initially secure the cylinders. Adjusting the angle and position of the cylinders by adjusting bolts in various locations on the clamps, for example, can be used to adjust the clamps' bolts and other features to achieve the desired centering and positioning. Another approach involves placing the cylinders on simple guide rails, hoping that the rails' restraints will ensure relative alignment during placement and movement. Furthermore, in some less mature processes, workers often rely on visual adjustments based on their experience, relying on their own accumulated sense of alignment to determine whether the alignment is accurate.

[0004] However, these existing techniques have significant drawbacks. Manual measurement combined with manual adjustment relies heavily on the operator's skill level and work attitude. Even the slightest human error can lead to inaccurate cylinder alignment, not to mention the significant inefficiency of repeated manual adjustments. Furthermore, traditional methods struggle to guarantee high-precision positioning and alignment of the two cylinders after each operation, which can easily lead to uneven stress distribution in the welded joint, reducing weld quality and creating safety risks. Summary of the Invention

[0005] In order to improve the accuracy and efficiency of centering and positioning of two cylinders during welding and enhance the welding quality and efficiency, the present application provides a pressure vessel outer wall welding device.

[0006] The present application provides a pressure vessel outer wall welding device, which adopts the following technical solution: A pressure vessel outer wall welding device includes a drive assembly, a welding platform, an automatic welding device and several centering assemblies, the drive assembly includes a drive motor, a rotating rod and a support seat, the support seat is fixedly connected to the upper end surface of the welding platform, the drive motor is fixedly connected to one end of the support seat vertically arranged, one end of the rotating rod horizontally passes through the support seat and is coaxially fixedly connected to the drive motor, the centering assembly includes a mounting seat and several arc plates, the several arc plates are evenly distributed along the circumference of the rotating rod and are slidingly connected to the mounting seat along the radial direction of the rotating rod, the mounting seat and the rotating rod are coaxially arranged and rotate synchronously, the automatic welding device includes a welding head and a column, the welding head is slidingly connected to the column in the vertical direction.

[0007] By adopting the above technical solution, the driving motor of the driving assembly can drive the rotating rod to rotate and provide power for subsequent work, and the support seat plays the role of stabilizing the driving motor and supporting the rotating rod. The centering assembly adopts a number of arc-shaped plates that are evenly distributed along the circumference of the rotating rod and can be slidably connected to the mounting seat along the radial direction of the rotating rod. In conjunction with the mounting seat that is coaxially arranged with the rotating rod and rotates synchronously, it can realize the centering and positioning of the two cylinders that need to be welded, which is convenient for subsequent welding operations. The welding head of the automatic welding device can slide on the column in the vertical direction, and can adjust the welding position according to actual needs to improve the accuracy and flexibility of welding. The entire device can effectively solve the centering and positioning problems between the two welded cylinders, and efficiently complete the welding of the outer wall of the pressure vessel, while reducing manual operations and avoiding human quality problems. Automated production improves welding efficiency.

[0008] Optionally, the column is horizontally slidably connected to two symmetrically arranged racks in a direction perpendicular to the axis of the rotating rod, the rotating shaft is located between the two racks, the two racks are respectively engaged with gears, the two gears are engaged with each other between the two racks, and both gears are rotatably connected to the column, and one of the gears is coaxially fixedly connected to the positioning motor.

[0009] By adopting the above technical solution, the positioning motor drives the gear to rotate, and the mutually meshing gears drive the two symmetrically arranged racks to slide horizontally on the column, accurately adjusting the welding position, thereby solving the positioning problem between the two welded cylinders.

[0010] Optionally, the upper end surface of the welding platform is slidably connected to a first positioning seat along the axis direction of the rotating rod, and the first positioning seat is slidably connected to the rotating rod on the side of the support seat away from the drive motor. A movable seat is provided on the side of the rotating rod away from the support seat, and the end of the movable seat close to the rotating rod is horizontally slidably connected to a second positioning seat in a direction perpendicular to the axis of the rotating rod. The movable seat is slidably connected to the welding platform along the axial direction of the rotating rod.

[0011] By adopting the above technical solution, the device can be applied to welding pressure vessel cylinders of different lengths and diameters, and can cooperate with the centering component to realize centering and positioning of two cylinders during welding.

[0012] Optionally, a fixed block is fixed on one side of the arc plate close to the mounting seat, and a number of cylinders corresponding to the arc plates are fixed in the mounting seat. The telescopic ends of the cylinders extend out of the mounting seat and are fixedly connected to the mounting slot. The fixed block is slidably connected to the mounting slot along the axial direction of the rotating rod, and the arc plate and the mounting seat are detachably connected.

[0013] By adopting the above technical solution, the expansion and contraction of the cylinder and the cooperation between the fixing block and the mounting groove make the arc plate and the mounting seat detachable and connected, which facilitates the replacement of the arc plate to adapt to pressure vessels of different specifications and helps solve the centering and positioning problems between the two welded cylinders.

[0014] Optionally, an outlet having the same shape as the fixing block is provided at one end of the mounting groove perpendicular to the axis of the rotating rod, and a baffle is provided on one side of the mounting seat close to the outlet and is slidably connected to the rotating rod along the axis of the rotating rod.

[0015] By adopting the above technical solution, an outlet is opened by using the mounting groove and a baffle that can slide along the axis of the rotating rod is set, so that the arc plate and the mounting seat can be detachably connected, which facilitates the replacement of the arc plate to adapt to pressure vessels of different specifications, and at the same time helps to solve the alignment problem between the two welded cylinders.

[0016] Optionally, the baffle is provided with a threaded through hole, and a threaded rod is threadedly connected to the baffle in the threaded through hole. An insertion rod is provided between two adjacent threaded rods, and both ends of the insertion rod are respectively inserted into the two adjacent threaded rods. The threaded rod closest to the support seat is coaxially fixedly connected with a driving member for driving the threaded rod to rotate, and the driving member is rotatably connected to the first positioning seat along the axis of the rotating rod.

[0017] By adopting the above technical solution, the driving part drives the threaded rod to rotate. Since the threaded rod is threadedly connected to the baffle, the baffle can slide with the rotating rod along the axis of the rotating rod, which facilitates the disassembly and installation of the arc plate, thereby realizing the centering function and better applying it to cylinders to be welded of different specifications.

[0018] Optionally, several supporting devices are also included, which include a supporting base, a supporting lifting seat and two symmetrically arranged supporting components. The supporting base is located on the upper end surface of the welding platform, the supporting lifting seat is slidably connected to the supporting base along the vertical direction, and the two supporting roller groups are respectively fixedly connected to the upper end surface of the supporting lifting seat on both sides perpendicular to the axis of the rotating rod.

[0019] By adopting the above technical solution, the support device is equipped with a support lifting seat, which can adjust the height to adapt to pressure vessels of different sizes. The two symmetrical support components can provide stable support on both sides perpendicular to the axis of the rotating rod, assisting in the centering and positioning of the two cylinders during the welding process of the outer wall of the pressure vessel, while reducing the shaking of the pressure vessel during operation.

[0020] Optionally, the support assembly includes two support frames and two support rollers, the support roller is located between the two support frames and is rotatably connected to the support frames along its own axis, and both support frames are rotatably connected to the support lifting seat along an axis parallel to the axis of the rotating rod.

[0021] By adopting the above technical solution, the two support frames of the support assembly can be rotatably connected to the support lifting seat along an axis parallel to the axis of the rotating rod, and the support position and angle can be flexibly adjusted to better adapt to pressure vessels of different sizes and specifications; at the same time, the support roller located between the two support frames can rotate along its own axis. The rotation of the support roller along its own axis can effectively reduce the friction with the outer wall of the pressure vessel, so that the pressure vessel can rotate more smoothly and stably during the welding process, which is conducive to improving the accuracy and efficiency of the centering and positioning of the two cylinders during welding, improving the welding quality and efficiency, and solving the centering and positioning problems between the two welded cylinders.

[0022] Optionally, several conveying devices are also included, which include a conveying base, a conveying lifting seat and two symmetrically arranged conveying rollers. The conveying base is located on the upper end surface of the welding platform, and the conveying lifting seat is slidably connected to the conveying base in the vertical direction. The two conveying rollers are rotatably connected to the upper end surface of the conveying lifting seat on both sides perpendicular to the axis of the rotating rod. One end of the conveying roller is coaxially fixedly connected to a conveying motor, and the conveying motor is fixedly connected to the conveying lifting seat. The axis of the conveying roller gradually approaches the vertical plane where the axis of the rotating rod is located from top to bottom.

[0023] By adopting the above technical solution, several conveying devices can conveniently convey the containers to be welded to the welding position, and the conveying base can be firmly placed on the end face of the welding platform to ensure the stability of the conveying process; the conveying lifting seat is slidably connected to the conveying base in the vertical direction, and the conveying height can be adjusted according to actual needs to adapt to the conveying of containers of different sizes; two symmetrically arranged and rotatably connected to the upper end face of the conveying lifting seat on both sides of the rotating rod axis can realize the smooth conveying of the container under the drive of the conveying motor; the axis of the conveying roller gradually approaches the vertical plane where the axis of the rotating rod is located from top to bottom, so that the container can gradually approach the welding position at the rotating rod during the conveying process, reducing the position deviation during conveying, reaching the welding point more accurately, improving the welding efficiency and quality, and further solving the centering and positioning problems between the two welded cylinders.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The driving motor of the driving assembly can drive the rotating rod to rotate and provide power for subsequent work. The support seat plays the role of stabilizing the driving motor and supporting the rotating rod. The centering assembly adopts a number of arc-shaped plates that are evenly distributed along the circumference of the rotating rod and can be slidably connected to the mounting seat along the radial direction of the rotating rod. In conjunction with the mounting seat that is coaxially arranged with the rotating rod and rotates synchronously, it can realize the centering and positioning of the two cylinders that need to be welded, which is convenient for subsequent welding operations. The welding head of the automatic welding device can slide on the column in the vertical direction, and can adjust the welding position according to actual needs to improve the accuracy and flexibility of welding. The entire device can effectively solve the centering and positioning problems between the two welded cylinders, and efficiently complete the outer wall welding of the pressure vessel; 2. The positioning motor drives the gear to rotate, and the meshing gears drive the two symmetrically arranged racks to slide horizontally on the column, accurately adjusting the welding position, thereby solving the positioning problem between the two welded cylinders; 3. The device can be applied to welding pressure vessel cylinders of different lengths and diameters, and can be used in conjunction with the centering assembly to achieve centering and positioning of two cylinders during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is a schematic diagram of the overall structure of a pressure vessel outer wall welding device.

[0026] Figure 2 yes Figure 1 Schematic diagram of the fracture structure.

[0027] Figure 3 It is a structural diagram of the centering component.

[0028] Figure 4 It is a structural diagram of an automatic welding device.

[0029] Explanation of the accompanying drawings: 1. Driving assembly; 11. Driving motor; 12. Rotating rod; 13. Support seat; 2. Centering assembly; 21. Mounting seat; 22. Arc plate; 23. Fixed block; 24. Cylinder; 25. Mounting groove; 251. Outlet; 26. Baffle; 261. Threaded through hole; 3. Welding platform; 31. First positioning seat; 311. Threaded rod; 312. Insert rod; 313. Driving member; 32. Moving seat; 33. Second positioning seat; 4. Automatic welding device; 41. Welding head; 42. Column; 43. Rack; 44. Gear; 45. Positioning motor; 5. Support device; 51. Support base; 52. Support lifting seat; 53. Support assembly; 531. Support frame; 532. Support roller; 6. Conveying device; 61. Conveying base; 62. Conveying lifting seat; 63. Conveying roller; 64. Conveying motor. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0031] An embodiment of the present application discloses a pressure vessel outer wall welding device.

[0032] Reference Figure 1 A pressure vessel outer wall welding device includes a drive assembly 1, a welding platform 3, an automatic welding device 4, and several centering assemblies 2. The drive assembly 1 is used to drive the centering assembly 2 to rotate, thereby driving the rotation of the cylinder to be welded; the centering assembly 2 is used to align the two cylinders to be welded so that the two cylinders are coaxially arranged; the automatic welding device 4 is used to weld the cylinders to be welded; and the welding platform 3 is used to mount the drive assembly 1, the centering assembly 2, and the automatic welding device 4.

[0033] Reference Figure 1 The driving assembly 1 includes a driving motor 11, a rotating rod 12 and a support base 13. The support base 13 is fixedly connected to the upper end surface of the welding platform 3. The driving motor 11 is fixedly connected to one end of the support base 13 which is vertically arranged. One end of the rotating rod 12 passes horizontally through the support base 13 and is coaxially fixedly connected to the driving motor 11. The driving motor 11 can drive the rotating rod 12 to rotate and provide power for subsequent work. The support base 13 plays the role of stabilizing and fixing the driving motor 11 and supporting the rotating rod 12.

[0034] Reference Figure 2 The centering component 2 includes a mounting seat 21 and several curved plates 22. The mounting seat 21 is coaxially arranged with the rotating rod 12 and rotates synchronously. The several curved plates 22 are evenly distributed along the circumference of the rotating rod 12 and are slidingly connected to the mounting seat 21 along the radial direction of the rotating rod 12. The side of the curved plate 22 away from the mounting seat 21 is provided with a friction pattern to increase the friction between the curved plate 22 and the inner wall of the cylinder, thereby reducing the resistance of the centering component 2 to drive the cylinder to rotate.

[0035] Reference Figure 2 and Figure 3 The specific sliding method of the curved plate 22 is as follows: a plurality of cylinders 24 corresponding to the curved plates 22 are fixedly installed in the mounting seat 21. The telescopic end of the cylinder 24 extends out of the mounting seat 21 and is fixedly connected to the mounting slot 25. Two guide rods are fixedly installed on the end of the mounting slot 25 close to the mounting seat 21, which serve as a guide and limit when the cylinder 24 drives the mounting slot 25 to slide. A fixed block 23 is fixedly installed on the side of the curved plate 22 close to the mounting seat 21. The curved plate 22 and the fixed block 23 are fixedly connected by a plurality of support rods. At the same time, the provision of the support rods improves the stability of the curved plate 22. The fixed block 23 is installed in the mounting slot 25 and slides synchronously with the mounting slot 25, thereby enabling the cylinder 24 to drive the curved plate 22 to slide. In this application, the number of curved plates 22 provided on the centering assembly 2 and each mounting seat 21 is not limited.

[0036] Reference Figure 3The curved plate 22 is detachably connected to the mounting seat 21 by: a fixed block 23 slidably connected to the mounting slot 25 along the axial direction of the rotating rod 12. The end of the mounting slot 25, perpendicular to the axis of the rotating rod 12, has an outlet 251 of the same shape as the fixed block 23. The end of the mounting slot 25, away from the mounting seat 21, has a sliding groove for the support rod. The fixed block 23 is in an inverted T-shape, with the horizontal end of the T-shape located on the side closest to the mounting seat 21. The interior of the mounting slot 25 is completely aligned with the fixed block 23. The expansion and contraction of the cylinder 24 and the coordination of the fixed block 23 with the mounting slot 25 enable the detachable connection between the curved plate 22 and the mounting seat 21, making it easy to replace the curved plate 22 to accommodate pressure vessels with different inner diameters.

[0037] Reference Figure 2 and Figure 3 The cam 312 is provided with a screw threaded hole 261 on the side of the mounting base 21 close to the outlet 251, and the cam 312 is provided with a baffle 26 that is slidably connected to the rotating rod 12 along the axial direction of the rotating rod 12. The baffle 26 has a threaded through hole 261, and the baffle 26 is threadedly connected to a threaded rod 311 in the threaded through hole 261. A plug rod 312 is provided between two adjacent threaded rods 311. The two ends of the plug rod 312 are respectively inserted into the two adjacent threaded rods 311. A slot for the plug rod 312 to slide is provided inside the threaded rod 311. In order to realize the rotation of the plug rod 312 with the threaded rod 311, a sliding bar is fixed on the outside of the plug rod 312, and a sliding groove corresponding to the sliding bar is provided in the slot of the threaded rod 311. The threaded rod 311 closest to the support seat 13 is coaxially fixedly connected with a driving member 313 for driving the threaded rod 311 to rotate. The driving member 313 rotates synchronously with the rotating rod 12 along the axis of the rotating rod 12 to prevent the support rod and the threaded rod 311 from colliding when the arc plate 22 rotates, thereby preventing the arc plate 22 from driving the cylinder to rotate and weld. The driving member 313 drives the threaded rod 311 to rotate. Since the threaded rod 311 is threadedly connected to the baffle 26, the baffle 26 can slide with the rotating rod 12 along the axis of the rotating rod 12, making it easier to disassemble and install the arc plate 22, thereby realizing the centering function and better applying it to cylinders to be welded of different specifications. The driving member 313 can be a motor or a handwheel, etc. The use of a motor can improve the automation capability. Since the baffle 26 is threadedly connected to the threaded rod 311, when the rotating rod 12 drives the mounting seat 21 to rotate, the baffle 26 does not move. Reference Figure 2The upper end surface of the welding platform 3 is slidably connected to a first positioning seat 31 along the axis of the rotating rod 12. Two tracks extending along the axis of the rotating rod 12 are fixed on the welding platform 3. The first positioning seat 31 slides on the tracks. The first positioning seat 31 is sleeved on the outside of the rotating rod 12 to further support the rotating rod 12 and improve the stability of the rotating rod 12. The first positioning seat 31 is slidably connected to the rotating rod 12 on the side of the support seat 13 away from the drive motor 11. The first positioning seat 31 includes two parts, namely a horizontal moving part and a rotating part rotatably connected to the horizontal moving part along the axis of the rotating rod 12. The rotating part is coaxially arranged with the rotating rod 12, and the rotating rod 12 passes through the rotating part and the two rotate synchronously. The support seat 13 is fixedly connected to a hydraulic cylinder. The telescopic end of the hydraulic cylinder pushes the horizontal moving part to slide, thereby driving the rotating part to slide on the rotating rod 12 along the axis of the rotating rod 12. The threaded rod 311 closest to the support seat 13 passes through the rotating portion and is coaxially fixedly connected to the driver 313. The threaded rod 311 is rotatably connected to the rotating portion along its own axis, thereby allowing the driver 313 to be rotatably connected to the first positioning seat 31 along the axis of the rotating rod 12. When the driver 313 is driven by a motor, it can be fixedly connected to the rotating portion. When the driver 313 is driven manually by a handwheel or other means, it is not fixedly connected to the rotating portion. As the first positioning seat 31 slides, the threaded rod 311 closest to the support seat 13 is driven to slide by the plug-in action of the threaded rod 311 and the plug-in rod 312.

[0038] Reference Figure 2 In addition, the centering component 2 closest to the first positioning seat 31 can slide synchronously with the first positioning seat 31. A circular ring is fixed on the rotating part of the first positioning seat 31, and a convex ring is fixed on the outer wall of the end of the circular ring away from the first positioning seat 31. The circular ring and the convex ring are both inserted into the mounting seat 21, so that the mounting seat 21 and the first positioning member slide synchronously, and the mounting seat 21 is rotationally connected to the first positioning member. The centering component 2 closest to the column 42 cannot move in the axial direction of the rotating rod 12. The centering component 2 between the centering component 2 closest to the first positioning seat 31 and the centering component 2 closest to the column 42 can slide or not. A sliding groove is provided on the outer wall of the rotating rod 12, and a protrusion is fixed in the mounting seat 21. The protrusion slides in the sliding groove, so that the rotating rod 12 can drive the mounting seat 21 to rotate.

[0039] Reference Figure 2A movable seat 32 is provided on the side of the rotating rod 12 away from the support seat 13. The end of the movable seat 32 close to the rotating rod 12 is horizontally slidably connected to the second positioning seat 33 in a direction perpendicular to the axis of the rotating rod 12. The movable seat 32 is slidably connected to the welding platform 3 along the axial direction of the rotating rod 12. When the second positioning seat 33 is sleeved onto the rotating rod 12, the rotating rod 12 is further supported. The second positioning seat 33, the support seat 13 and the first positioning seat 31 jointly improve the stability of the rotating rod 12. Two electric rails are provided above the welding platform 3. The movable seat 32 slides on the electric rails. Each electric rail is fixedly connected to the welding platform 3 through two legs. The second positioning seat 33 is slidably connected to the movable seat 32 through a motor screw structure. The arrangement of the first positioning seat 31 and the second positioning seat 33 enables the device to be suitable for welding pressure vessel cylinders of different lengths and diameters, and cooperates with the centering component 2 to realize the centering and positioning of the two cylinders during welding.

[0040] Reference Figure 2 The automatic welding device 4 includes a welding head 41 and a column 42. It utilizes submerged arc welding. The welding head 41 is vertically slidably connected to the column 42, allowing for adjustment of the welding position based on actual needs, improving welding accuracy and flexibility. The entire device effectively addresses the alignment and positioning issues between the two cylinders being welded, efficiently completing the outer wall welding of the pressure vessel. The lifting mechanism between the welding head 41 and the column 42 utilizes conventional design and will not be further described here.

[0041] Reference Figure 2 and Figure 4The column 42 is connected to two symmetrically arranged racks 43 for horizontal sliding movement perpendicular to the axis of the rotating rod 12. The rotating shaft is located between the two racks 43. The two racks 43 are respectively engaged with a gear 44. The two gears 44 mesh with each other between the two racks 43. Both gears 44 are rotatably connected to the column 42. One of the gears 44 is coaxially fixedly connected to a positioning motor 45. The positioning motor 45 drives the gears 44 to rotate. The intermeshing gears 44 drive the two symmetrically arranged racks 43 to slide horizontally on the column 42, accurately adjusting the welding position and thus solving the positioning problem between the two cylinders being welded. The first positioning seat 31 pushes the first cylinder to abut against the two racks 43, thereby determining the welding position of the first cylinder. The welding head 41 is facing the plane where the end face of the rack 43 close to the support seat 13 is located. After the first cylinder abuts against the rack 43, the first positioning seat 31 stops sliding, and the centering component 2 starts working. The arc plate 22 abuts against the inner wall of the first cylinder to complete the centering operation. At the same time, the centering component 2 fixes the first cylinder, and the rack 43 moves in the opposite direction away from the first cylinder. The second positioning seat 33 pushes the second cylinder toward the first cylinder. After the first cylinder abuts against the end face of the second cylinder, the arc plate 22 in the second cylinder centers the second cylinder. Subsequently, the first positioning seat 31 and the second positioning seat 33 can be slightly separated from the end face of the cylinder to reduce the friction received by the end face during the rotation welding of the cylinder. Two support columns are fixed on the upper end surface of the welding platform 3, and the column 42 is located between the two support columns. Two through holes are provided on the support columns for two racks 43 to pass through respectively, so as to support the racks 43, prevent the cylinder from bending the racks 43, improve the positioning accuracy, and protect the racks 43.

[0042] Reference Figure 1 and Figure 2 The embodiment of the present application also includes a plurality of support devices 5, which include a support base 51, a support lifting seat 52, and two symmetrically arranged support assemblies 53. The support base 51 is located on the upper end surface of the welding platform 3, and the support lifting seat 52 is slidably connected to the support base 51 in the vertical direction. Two groups of support rollers 532 are respectively fixedly connected to the upper end surface of the support lifting seat 52 on both sides perpendicular to the axis of the rotating rod 12. The support base 51 is provided with two hydraulic cylinders and four guide rods. The hydraulic cylinders drive the support lifting seat 52 to rise and fall, and the guide rods are inserted into the support lifting seat 52. The support device 5 is provided with a support lifting seat 52, which can be adjusted in height to accommodate pressure vessels of different sizes. The two symmetrical support assemblies 53 can provide stable support on both sides perpendicular to the axis of the rotating rod 12, assisting in the centering and positioning of the two cylinders during the welding process of the outer wall of the pressure vessel, while reducing the shaking of the pressure vessel during operation.

[0043] Reference Figure 1 and Figure 2The support assembly 53 includes two support frames 531 and two support rollers 532. The support roller 532 is located between the two support frames 531 and is rotatably connected to the support frames 531 along its own axis. The two support frames 531 are both rotatably connected to the support lifting seat 52 along an axis parallel to the axis of the rotating rod 12, and can flexibly adjust the support position and angle to better adapt to pressure vessels of different sizes and specifications; at the same time, the support roller 532 located between the two support frames 531 can rotate along its own axis. The rotation of the support roller 532 along its own axis can effectively reduce the friction with the outer wall of the pressure vessel, making the pressure vessel rotate more smoothly and stably during the welding process, which is conducive to improving the accuracy and efficiency of the centering and positioning of the two cylinders during welding, improving the welding quality and efficiency, and solving the centering and positioning problems between the two cylinders being welded. At the same time, through the rotation between the support frame 531 and the support lifting seat 52, the two support rollers 532 can adapt to cylinders of different outer diameters, and the two support rollers 532 can clamp the cylinders. The two support rollers 532 are the first support roller 532 and the second support roller 532 respectively. The first support roller 532 is located above the second support roller 532 and on the outside of the support lifting seat 52 in the horizontal direction. When the cylinder contacts the two support rollers 532, if the outer diameter of the cylinder is smaller, it will first abut against the second support roller 532, thereby driving it to rotate downward, and the first support roller 532 will then rotate and abut against the outer wall of the cylinder; if the outer diameter of the cylinder is larger, it will first abut against the first support roller 532, thereby driving it to rotate outward, and the second support roller 532 will then rotate upward and abut against the outer wall of the cylinder.

[0044] Reference Figure 1 and Figure 2 In the embodiment of the present application, two supporting devices 5 are provided under each cylinder, wherein the supporting base 51 of the supporting device 5 close to the column 42 is fixed, and the supporting device 5 away from the column 42 can slide on the welding machine platform along the axis direction of the rotating rod 12, and the lower end of the first positioning plate can be provided to be fixedly connected to the supporting base 51, thereby driving it to slide.

[0045] Reference Figure 1 and Figure 2The embodiment of the present application also includes several conveying devices 6, which include a conveying base 61, a conveying lift 62, and two symmetrically arranged conveying rollers 63. The conveying base 61 is located on the upper end surface of the welding platform 3. The conveying lift 62 is vertically connected to the conveying base 61 for sliding movement. The two conveying rollers 63 are respectively rotatably connected to the upper end surface of the conveying lift 62 on both sides perpendicular to the axis of the rotating rod 12. One end of the conveying roller 63 is coaxially fixedly connected to a conveying motor 64, which is fixedly connected to the conveying lift 62. The axis of the conveying roller 63 gradually approaches the vertical plane of the axis of the rotating rod 12 from top to bottom. The conveying base 61 is equipped with two hydraulic cylinders and two guide rods. The hydraulic cylinders drive the conveying lift 62 to rise and fall. The guide rods are inserted into the conveying lift 62. Several conveying devices 6 can conveniently convey the containers to be welded to the welding position. The conveying base 61 can be firmly placed on the upper end surface of the welding platform 3 to ensure the stability of the conveying process; the conveying lifting seat 62 is slidably connected to the conveying base 61 in the vertical direction, and the conveying height can be adjusted according to actual needs to adapt to the conveying of containers of different sizes; two symmetrically arranged and rotatably connected to the upper end surface of the conveying lifting seat 62 are perpendicular to the axis of the rotating rod 12 on both sides of the conveying roller 63, which can realize the smooth conveying of the container under the drive of the conveying motor 64; the axis of the conveying roller 63 gradually approaches the vertical plane where the axis of the rotating rod 12 is located from top to bottom, so that the container can gradually approach the welding position at the rotating rod 12 during the conveying process, reducing the position deviation during conveying, reaching the welding point more accurately, improving the welding efficiency and quality, and further solving the centering and positioning problems between the two welded cylinders.

[0046] The second positioning plate is located below the moving seat 32 . When the second positioning seat 33 slides along with the moving seat 32 , it will not collide with the supporting device 5 and the conveying device 6 .

[0047] The specific working steps of the embodiment of this application are as follows: S1, select the appropriate curved plate 22 according to the diameter of the cylinder, and preliminarily adjust the height of the conveying lift 62 so that the centering component 2 can be located inside the cylinder; S2, placing the first cylinder on the conveying roller 63 and conveying it toward the first positioning seat 31 until the first cylinder abuts against the first positioning seat 31; At step S3, the rack 43 extends from the column 42, and the first positioning seat 31 pushes the first cylinder to abut against the rack 43. The curved plate 22 in the first cylinder slides outward to abut against the inner wall of the first cylinder. The support and lifting seat 52 below the first cylinder rises upward to support the first cylinder. The rack 43 moves in the opposite direction, away from the first cylinder. At the same time, the heights of all the conveying and lifting seats 62 are adjusted so that the conveying rollers 63 abut against the outer walls of the cylinders. S4: Place the second cylinder on the conveying roller 63 and convey it toward the first cylinder until the second cylinder is close to the first cylinder. The second positioning seat 33 slides on the movable seat 32, and the movable seat 32 slides along the axis of the rotating rod 12. The second positioning seat 33 is sleeved on the rotating rod 12. The movable seat 32 continues to slide, and the second positioning seat 33 drives the first cylinder and the second cylinder to abut against each other. S5, the curved plate 22 in the second cylinder slides outward and abuts against the inner wall of the second cylinder, the supporting lifting seat 52 below the second cylinder rises upward to support the second cylinder, and all the conveying lifting seats 62 move downward; S6, the welding head 41 moves downward to align with the abutment of the two cylinders, and then welding begins. The driving motor 11 drives the rotating rod 12 to rotate, thereby driving the centering assembly 2 to rotate and driving the cylinders to rotate; S7, after welding is completed, the conveying lifting seat 62 rises, the conveying roller 63 abuts the cylinder, the supporting lifting seat 52 descends, the second positioning plate detaches from the rotating rod 12 and slides horizontally in a direction perpendicular to the axis of the rotating rod 12, away from the moving path of the cylinder, and the conveying device 6 conveys the welded cylinder outward, so that it detaches from the rotating rod 12 and the centering component 2.

[0048] The implementation principle of a pressure vessel outer wall welding device in an embodiment of the present application is as follows: the driving motor 11 of the driving component 1 can drive the rotating rod 12 to rotate, providing power for subsequent work, and the support seat 13 plays the role of stabilizing and fixing the driving motor 11 and supporting the rotating rod 12. The centering component 2 uses a plurality of arc-shaped plates 22 that are evenly distributed along the circumference of the rotating rod 12 and can be slidably connected to the mounting seat 21 along the radial direction of the rotating rod 12. In conjunction with the mounting seat 21 that is coaxially arranged with the rotating rod 12 and rotates synchronously, it can realize the centering and positioning of the two cylinders to be welded, facilitating subsequent welding operations. The welding head 41 of the automatic welding device 4 can slide on the column 42 in the vertical direction, and can adjust the welding position according to actual needs, thereby improving the accuracy and flexibility of welding. The entire device can effectively solve the centering and positioning problems between the two welded cylinders, and efficiently complete the outer wall welding of the pressure vessel, while reducing manual operations, avoiding human quality problems, and improving welding efficiency through automated production.

[0049] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A pressure vessel outer wall welding device, characterized in that: The invention comprises a driving assembly (1), a welding platform (3), an automatic welding device (4) and a plurality of centering assemblies (2), wherein the driving assembly (1) comprises a driving motor (11), a rotating rod (12) and a supporting seat (13), wherein the supporting seat (13) is fixedly connected to the upper end surface of the welding platform (3), the driving motor (11) is fixedly connected to one end of the supporting seat (13) which is vertically arranged, and one end of the rotating rod (12) passes through the supporting seat (13) horizontally and is coaxially fixedly connected to the driving motor (11), and the centering assembly (2) comprises a mounting seat (21) and a plurality of arc-shaped plates (22), wherein the plurality of arc-shaped plates (22) are evenly distributed along the circumference of the rotating rod (12) and are slidably connected to the mounting seat (21) along the radial direction of the rotating rod (12), and the mounting seat (21) and the rotating rod (12) are coaxially arranged and rotate synchronously, and the automatic welding device (4) comprises a welding head (41) and a column (42), and the welding head (41) is slidably connected to the column (42) along the vertical direction.

2. A pressure vessel outer wall welding device according to claim 1, characterized in that: The column (42) is horizontally slidably connected to two symmetrically arranged racks (43) in a direction perpendicular to the axis of the rotating rod (12). The rotating shaft is located between the two racks (43). The two racks (43) are respectively engaged with gears (44). The two gears (44) are engaged with each other between the two racks (43). The two gears (44) are both rotatably connected to the column (42), and one of the gears (44) is coaxially fixedly connected to a positioning motor (45).

3. The pressure vessel outer wall welding device according to claim 1, characterized in that: The upper end surface of the welding platform (3) is slidably connected to a first positioning seat (31) along the axis direction of the rotating rod (12); the first positioning seat (31) is slidably connected to the rotating rod (12) on the side of the support seat (13) away from the drive motor (11); a moving seat (32) is provided on the side of the rotating rod (12) away from the support seat (13); an end of the moving seat (32) close to the rotating rod (12) is horizontally slidably connected to a second positioning seat (33) along a direction perpendicular to the axis of the rotating rod (12); and the moving seat (32) is slidably connected to the welding platform (3) along the axial direction of the rotating rod (12).

4. A pressure vessel outer wall welding device according to claim 3, characterized in that: A fixing block (23) is fixedly provided on one side of the arc plate (22) close to the mounting seat (21), and a plurality of cylinders (24) corresponding to the arc plate (22) are fixedly provided in the mounting seat (21). The telescopic ends of the cylinders (24) extend out of the mounting seat (21) and are fixedly connected to the mounting groove (25). The fixing block (23) is slidably connected to the mounting groove (25) along the axial direction of the rotating rod (12), and the arc plate (22) and the mounting seat (21) are detachably connected.

5. A pressure vessel outer wall welding device according to claim 4, characterized in that: An outlet (251) having the same shape as the fixed block (23) is provided at one end of the mounting groove (25) perpendicular to the axis of the rotating rod (12), and a baffle (26) is provided on one side of the mounting seat (21) close to the outlet (251) and is slidably connected to the rotating rod (12) along the axis of the rotating rod (12).

6. A pressure vessel outer wall welding device according to claim 5, characterized in that: The baffle (26) is provided with a threaded through hole (261), and the baffle (26) is threadedly connected to a threaded rod (311) in the threaded through hole (261). An insertion rod (312) is provided between two adjacent threaded rods (311), and both ends of the insertion rod (312) are respectively inserted into the two adjacent threaded rods (311). The threaded rod (311) closest to the support seat (13) is coaxially fixedly connected to a driving member (313) for driving the threaded rod (311) to rotate. The driving member (313) is rotatably connected to the first positioning seat (31) along the axis of the rotating rod (12).

7. The pressure vessel outer wall welding device according to claim 1, characterized in that: The invention also includes a plurality of support devices (5), wherein the support devices (5) include a support base (51), a support lifting seat (52) and two symmetrically arranged support assemblies (53), wherein the support base (51) is located on the upper end surface of the welding platform (3), the support lifting seat (52) is slidably connected to the support base (51) along the vertical direction, and two support roller (532) groups are respectively fixedly connected to the upper end surface of the support lifting seat (52) on both sides perpendicular to the axis of the rotating rod (12).

8. The pressure vessel outer wall welding device according to claim 7, characterized in that: The support assembly (53) includes two support frames (531) and two support rollers (532). The support roller (532) is located between the two support frames (531) and is rotatably connected to the support frames (531) along its own axis. Both support frames (531) are rotatably connected to the support lifting seat (52) along an axis parallel to the axis of the rotating rod (12).

9. The pressure vessel outer wall welding device according to claim 1, characterized in that: The invention also includes a plurality of conveying devices (6), wherein the conveying devices (6) include a conveying base (61), a conveying lifting seat (62) and two symmetrically arranged conveying rollers (63), the conveying base (61) is located on the upper end surface of the welding platform (3), the conveying lifting seat (62) is slidably connected to the conveying base (61) in the vertical direction, and the two conveying rollers (63) are respectively rotatably connected to the upper end surface of the conveying lifting seat (62) on both sides of the axis of the rotating rod (12), one end of the conveying roller (63) is coaxially fixedly connected to a conveying motor (64), the conveying motor (64) is fixedly connected to the conveying lifting seat (62), and the axis of the conveying roller (63) gradually approaches the vertical plane where the axis of the rotating rod (12) is located from top to bottom.

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