Double-machine-head automatic welding equipment for spent fuel dry type storage container
By designing a dual-head automatic welding equipment for dry storage containers of spent fuel, the problem of welding relying on manual labor in existing technologies has been solved, achieving efficient and reliable welding of the cover plate and cylinder, and improving welding quality and equipment performance in high-temperature and high-radioactivity environments.
Patent Information
- Application Number
- CN202511525448.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2026-01-20
AI Technical Summary
In the existing technology, the welding of dry storage containers for spent fuel relies on manual labor, which has problems such as high labor intensity, welding quality depending on the welder's skills, low production efficiency and poor equipment reliability at high temperatures. In addition, there is a lack of automatic welding equipment suitable for welding the cover plate and the cylinder.
A dual-head automatic welding equipment for spent fuel dry storage containers was designed. It adopts a dual-head design and has rotation, tilting, swinging and AVC motion functions. It is equipped with laser weld seam tracking and molten pool monitoring devices to realize automated welding.
It improves welding efficiency and quality, reduces manual labor intensity, and enhances the reliability and stability of welding equipment in high-temperature and high-radioactivity environments.
Smart Images
Figure CN121360862A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of welding, in particular to a double-head automatic welding equipment for spent fuel dry storage container. BACKGROUND
[0002] The spent fuel dry storage container is a container for storing spent fuel. After the spent fuel is loaded into the storage container, the inner cover and the barrel of the storage container, and the outer cover and the barrel need to be sealed and welded respectively. The welding workload is large, the welding environment dose rate is high, the environmental temperature is high, and the welding quality requirement is high. At present, the sealing welding of the cover plate of the spent fuel dry storage container uses imported customized welding equipment. Most of the daily maintenance, fault repair, spare parts procurement, system data updating and function expansion have not been localized, and the equipment has poor reliability at high temperature and high failure rate, which affects the work progress.
[0003] In the prior art, the automatic welding equipment seen on the market is mainly for the butt welding of plates and plates, the butt welding of pipes and pipes, and other conventional welding structures. There is no automatic welding equipment for such welding needs. The welding method between the cover plate and the barrel still follows the traditional manual welding method. The existing welding technology has the disadvantages of high labor intensity, welding quality depending on the skill level of welders, low production efficiency, high personnel cost, and is not suitable for manual welding in high radioactivity environment and high temperature environment. SUMMARY
[0004] The present application provides a double-head automatic welding equipment for spent fuel dry storage container, which solves the problem of manual welding of spent fuel dry storage container in the prior art.
[0005] The technical scheme of the present application is as follows:
[0006] The present application provides a double-head automatic welding equipment for spent fuel dry storage container, which solves the problem of manual welding of spent fuel dry storage container in the prior art.
[0007] In some embodiments, the main support seat is a circular shaft structure, the upper rotating device includes a gear ring, a rotating box, a first driving motor and a main driving gear, the gear ring is fixed on the main support seat, a circular ring guide rail is arranged on the top of the gear ring, the rotating box is slidably connected with the circular ring guide rail through a plurality of first sliding blocks, the first driving motor is fixedly arranged in the rotating box, the main driving gear is arranged on the motor shaft of the first driving motor, and the main driving gear is engaged with the gear ring.
[0008] In some embodiments, the lower rotating device has the same structure as the upper rotating device, the lower rotating device is arranged below the upper rotating device, and the lower rotating device includes a gear ring, a rotating box, a first driving motor and a main driving gear, the gear ring is fixed on the main support seat, a circular ring guide rail is arranged on the top of the gear ring, the rotating box is slidably connected with the circular ring guide rail through a plurality of first sliding blocks, the first driving motor is fixedly arranged in the rotating box, the main driving gear is arranged on the motor shaft of the first driving motor, and the main driving gear is engaged with the gear ring.
[0009] In some embodiments, the horizontal moving piece of the first radial displacement adjusting mechanism is provided with a height adjusting mechanism, the vertical moving piece of the height adjusting mechanism is provided with an upper welding head, and the horizontal moving piece of the second radial displacement adjusting mechanism is provided with a lower welding head.
[0010] In some embodiments, the first radial displacement adjusting mechanism includes a mounting seat, a first guide rail group, a second sliding block, a sliding plate, a second driving motor and a connecting seat, the mounting seat is arranged in the rotating box of the upper rotating device, the mounting seat is provided with the first guide rail group, the second driving motor and a belt drive, the second sliding block is slidably connected with the sliding plate on the first guide rail group, and the motor shaft of the second driving motor is fixedly connected with the pulley shaft of the driving pulley of the conveying belt.
[0011] In some embodiments, the second radial displacement adjusting mechanism has the same structure as the first radial displacement adjusting mechanism, the second radial displacement adjusting mechanism includes a mounting seat, a first guide rail group, a second sliding block, a sliding plate, a second driving motor and a connecting seat, the mounting seat is arranged in the rotating box of the upper rotating device, the mounting seat is provided with the first guide rail group, the second driving motor and a belt drive, the second sliding block is slidably connected with the sliding plate on the first guide rail group, and the motor shaft of the second driving motor is fixedly connected with the pulley shaft of the driving pulley of the conveying belt.
[0012] In some embodiments, the slide plate in the first radial displacement adjusting mechanism is a horizontal moving piece of the first radial displacement adjusting mechanism, and the slide plate in the second radial displacement adjusting mechanism is a horizontal moving piece of the second radial displacement adjusting mechanism; the height adjusting mechanism comprises an electric slide and a welding head mounting support fixedly arranged on the slide plate of the first radial displacement adjusting mechanism, and the welding head mounting support is fixedly arranged on a slide table of the electric slide, and the welding head mounting support is a vertical moving piece of the height adjusting mechanism.
[0013] In some embodiments, the rotating box body of the upper rotating device is provided with a welding wire feeding device and a welding wire straightening device matched with the upper welding head; and the rotating box body of the lower rotating device is provided with a welding wire feeding device and a welding wire straightening device matched with the lower welding head.
[0014] In some embodiments, the upper welding head and the lower welding head have the same structure, and the upper welding head and the lower welding head comprise a main mounting seat, an arc gear rack, a main mounting frame, a lower mounting frame, an upper mounting seat, a welding torch and a wire feeding pipe, a guide wheel is fixedly arranged on the inner wall of the main mounting seat, a through groove is arranged in the middle of the arc gear rack, arc-shaped grooves are arranged on both sides of the arc gear rack, and the guide wheel of the main mounting seat is in sliding fit with the arc-shaped grooves of the arc gear rack; the arc gear rack is fixedly connected with the main mounting frame on one side, a vertical displacement guide rail is arranged on the main mounting frame, the vertical displacement guide rail is in sliding fit with the lower mounting frame, the welding torch and the wire feeding pipe are arranged on the lower mounting frame, and the welding torch moves up and down along the vertical displacement guide rail in the vertical direction; the upper mounting seat is arranged on the top of the main mounting seat through a horizontal guide rail, and the horizontal guide rail realizes horizontal displacement of the welding torch.
[0015] In some embodiments, the upper welding head and the lower welding head are further provided with an electric rotating platform, the electric rotating platform is arranged on the upper end of the upper mounting seat, and the electric rotating platform realizes rotation of the upper mounting seat and the welding torch; a laser weld seam tracker and a molten pool monitoring camera are arranged on the lower mounting frame.
[0016] The implementation of the present application has the following beneficial effects
[0017] The present application provides a double-head automatic welding equipment for a spent fuel dry storage container, which has a reasonable design and can be used for welding a sealing weld between a cover plate and a cylinder of the spent fuel dry storage container. The double-head design of the equipment enables independent control of the single head and the double head, and the welding efficiency is high. The welding head of the equipment occupies a small space and has four functions of rotation, inclination, swing and AVC movement. The laser weld seam tracker and the molten pool monitoring device can monitor the welding molten pool in all directions, thereby improving the welding quality. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 Fig. 1 is a perspective view of a double-head automatic welding equipment for a spent fuel dry storage container according to an embodiment of the present application;
[0019] Figure 2 An internal partial structure diagram of a rotating box of a spent fuel dry storage container double-head automatic welding equipment according to an embodiment of the present application is shown in the figure;
[0020] Figure 3 A left view of a spent fuel dry storage container double-head automatic welding equipment according to an embodiment of the present application is shown in the figure;
[0021] Figure 4 A top view of a spent fuel dry storage container double-head automatic welding equipment according to an embodiment of the present application is shown in the figure;
[0022] Figure 5 A main support seat diagram of a spent fuel dry storage container double-head automatic welding equipment according to an embodiment of the present application is shown in the figure;
[0023] Figure 6 A welding head diagram of a spent fuel dry storage container double-head automatic welding equipment according to an embodiment of the present application is shown in the figure;
[0024] Figure 7 A bottom view of a welding head of a spent fuel dry storage container double-head automatic welding equipment according to an embodiment of the present application is shown in the figure;
[0025] Figure 8 A diagram of a tungsten tip state when a can cover and a can body of a spent fuel dry storage container double-head automatic welding equipment according to an embodiment of the present application are in a welding state is shown in the figure;
[0026] BRIEF DESCRIPTION OF DRAWINGS: 1, main mounting seat; 2, circular arc rack; 3, main mounting frame; 4, lower mounting frame; 5, upper mounting seat; 6, electric rotating platform; 7, welding torch; 71, tungsten tip point; 81, first molten pool monitoring camera; 82, second molten pool monitoring camera; 83, third molten pool monitoring camera; 9, wire feeding pipe; 10, laser weld seam tracker; 100, can body; 200, can cover; 300, weld seam; 400, base; 401, main support seat; 402, upper rotating device; 403, lower rotating device; 404, gear ring; 405, rotating box; 406, first driving motor; 407 main driving gear; 500, height adjusting mechanism; 501, electric sliding table; 502, welding head mounting bracket; 601, upper welding head; 602, lower welding head; 701, mounting seat; 702, first guide rail group; 703, second sliding block; 704, sliding plate; 705, second driving motor; 706, driving pulley; 707, conveying belt; 708, connecting seat. DETAILED DESCRIPTION
[0027] The technical solutions of the present application are clearly and completely described below in combination with the drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0028] The difficulties in the development of the automatic welding equipment for sealing and welding of the cover plate and the cylinder of the spent fuel dry storage container mainly include three points. The first difficulty is the design of the double-head welding device structure. The reasonable double-head structure is determined by using three-dimensional design software to digitally model and digitally simulate the operation of the double-head structure. The second difficulty is the design of the cooling system of the equipment. The cooling and heat dissipation problems of the welding gun, the welding machine and the camera system are solved through special refrigeration and heat dissipation design. The third difficulty is the design of the visual control system. The weld 300 tracking in the welding process is realized by using the laser visual control system resistant to radiation and high temperature.
[0029] As shown in Figures 1 to 8 , the present application provides a spent fuel dry storage container double-head automatic welding equipment, which comprises a base 400, a main support seat 401 arranged on the base 400, and an upper rotating device 402 and a lower rotating device 403 arranged on the main support seat 401 in sequence from top to bottom.
[0030] As shown in Figure 1 , Figure 3 and Figure 5 , the structure of the upper rotating device 402 and the structure of the lower rotating device 403 are the same, and each comprises a gear ring 404, a rotating box body 405, a first driving motor 406 and a main driving gear. The gear ring 404 is fixed on the main support seat 401, a circular ring-shaped guide rail is arranged on the top of the gear ring 404, the rotating box body 405 is arranged on the circular ring-shaped guide rail through a plurality of first sliding blocks, the first driving motor 406 is fixedly arranged in the rotating box body 405, and the main driving gear 407 engaged with the gear ring 404 is arranged on the motor shaft of the first driving motor 406.
[0031] The support and running track planning of the rotating box body 405 rely on the circular arc-shaped guide rail. The power transmission process is that the power of the first driving motor 406 is transmitted to the main driving gear 407. Since the gear ring 404 is fixed, the main driving gear 407 can only rotate around the gear ring 404 through engagement, thereby driving the rotating box body 405 406 to rotate along the circular arc-shaped guide rail relative to the main support seat 401. The main support seat 401 is preferably a circular shaft structure, so as to facilitate the installation of the gear ring 404 and the determination of the rotation center of the entire rotating box body 405.
[0032] The rotating box 405 in the upper rotating device 402 is a rotating part of the upper rotating device 402; the rotating box 405 in the lower rotating device 403 is a rotating part of the lower rotating device 403.
[0033] As shown in Figure 1 , a first radial displacement adjusting mechanism is arranged on the rotating part of the upper rotating device 402, a height adjusting mechanism 500 is arranged on the horizontal moving part of the first radial displacement adjusting mechanism, and an upper welding head 601 is arranged on the vertical moving part of the height adjusting mechanism 500. The rest welding essential devices such as the welding wire feeding device and the welding wire straightening device used in cooperation with the upper welding head 601 are also installed on the rotating box 405 of the upper rotating device 402. Relative to the welding equipment, the rest welding essential devices except the structure of the upper welding head 601 are mature products, and thus will not be described here. A second radial displacement adjusting mechanism is arranged on the rotating part of the lower rotating device 403, and a lower welding head 602 is arranged on the horizontal moving part of the second radial displacement adjusting mechanism. The rest welding essential devices such as the welding wire feeding device and the welding wire straightening device used in cooperation with the lower welding head 602 are installed on the rotating box 405 of the lower rotating device 403.
[0034] Among them, the upper welding head 601 and the lower welding head 602 have the same structure, and for the convenience of description, they are collectively referred to as welding heads. For the convenience of describing the positions of various components, directions need to be defined. Then, because the position of the welding head changes in the welding process, here, the welding head is taken as a reference, the left-hand direction is defined as "rear", the right-hand direction is defined as "front", the visible surface is defined as "left", the invisible surface is defined as "right", the upper side is defined as "up", and the lower side is defined as "down". All the definitions of "front", "rear", "left", "right", "up" and "down" in this article are based on this. Figure 8 Figure 8 Figure 8 Figure 8 Figure 8 Figure 8
[0035] The structure of the first radial displacement adjusting mechanism is the same as that of the second radial displacement adjusting mechanism, as shown in Figure 1 and Figure 2 As shown, both include the mounting seat 701, the first guide rail group 702, the second sliding block 703, the sliding plate 704, the second drive motor 705 and the connecting seat, the mounting seat 701 is arranged in the corresponding rotating box body 405, the first guide rail group 702 is arranged on the mounting seat 701, the sliding plate 704 is arranged on the first guide rail group 702 through the second sliding block 703; The second drive motor 705 and the conveying belt 707 are arranged on the mounting seat 701, the motor shaft of the second drive motor 705 is fixedly connected with the pulley shaft of the driving pulley 706 of the conveying belt 707, the sliding plate 704 is fixed on the conveying belt 707, in actual production, the connecting seat 708 is arranged on the sliding plate 704, the connecting seat 708 is fixed on the conveying belt 707, and each second sliding block 703 is also arranged on the connecting seat 708. When the second drive motor 705 drives the conveying belt 707 to move, the sliding plate 704 is pulled by the moving conveying belt 707 to slide horizontally left and right on the horizontal guide rail group 702 through each second sliding block 703. Here, the horizontal left and right sliding is also determined according to the front and back positions of the welding head on it. In summary, the sliding plate 704 in the first radial displacement adjusting mechanism is a horizontal moving part of the first radial displacement adjusting mechanism; the sliding plate 704 in the second radial displacement adjusting mechanism is a horizontal moving part of the second radial displacement adjusting mechanism.
[0036] The height adjusting mechanism 500 includes the electric sliding table 501 and the welding head mounting bracket 502, the electric sliding table 501 is fixedly arranged on the sliding plate 704 of the first radial displacement adjusting mechanism, and the welding head mounting bracket 502 is fixedly arranged on the sliding table of the electric sliding table 501, and the welding head mounting bracket 502 is a vertical moving part of the height adjusting mechanism 500. The above-mentioned double-head automatic welding equipment has the advantages of compact structure, small space occupation, convenient operation, good welding quality, high welding efficiency and the like.
[0037] The upper welding head 601 and the lower welding head 602 are the same in structure, and are integrated with rotation, inclination, swing and AVC movements, which are used for adjusting the rotation angle of the tungsten electrode 72 on the welding head, adjusting the inclination, controlling the swing, and finely adjusting up and down, and have high adjustment accuracy, which greatly improves the welding quality. In addition, the welding head with the above-mentioned structure also has the advantages of compact structure, small space occupation, convenient control and the like. Both include the main mounting seat 1, the circular arc rack 2, the main mounting frame 3, the lower mounting frame 4, the upper mounting seat 5, the electric rotating platform 6, the welding torch 7 and the wire feeding pipe 9.
[0038] The main mounting seat 1 is a hollow structure, the inner wall of the main mounting seat 1 is fixed with a guide wheel, the circular arc rack 2 is provided with a through groove in the middle and arc-shaped grooves on both sides, and the guide wheel of the main mounting seat 1 is in sliding fit with the arc-shaped grooves of the circular arc rack 2. The guide wheel adopts a bolt roller bearing, the rolling bodies in each bolt roller bearing respectively extend into the arc-shaped grooves, and in the process that the circular arc rack 2 swings around the center line thereof under the driving of the main driving device, the rolling bodies in each bolt roller bearing respectively roll with the corresponding left arc-shaped groove 23 and the corresponding right arc-shaped groove 23, so as to reduce the friction, ensure the smoothness of the movement of the circular arc rack 2 and improve the service life. The circular arc rack 2 is connected with a driving motor, the driving motor drives the circular arc rack 2 to slide along the guide wheel, so as to adjust the angle of the tungsten electrode of the welding torch 7 at the lower end of the circular arc rack 2.
[0039] The lower end of the circular arc rack 2 is fixedly connected with a main mounting frame 3, the lower mounting frame 4 is mounted on the main mounting frame 3 through a vertical displacement guide rail, and the top of the main mounting frame 3 is mounted on the rear end of the circular arc rack 2, so that the overall structure is more compact and more beautiful. The welding torch 7 and the wire feeder pipe 9 are mounted on the lower mounting frame 4, and the welding torch 7 is provided with a tungsten electrode. The tungsten electrode tip 71 of the welding torch 7 moves up and down along the vertical direction under the driving of the motor of the vertical displacement guide rail, and the trajectory line of the tungsten electrode tip 71 moving up and down along the vertical direction intersects with the center line of the circular arc rack 2 through the vertical displacement adjusting device. At this time, the tungsten electrode tip 71 realizes automatic arc voltage control (AVC) for welding through the vertical displacement adjusting device, and the arc voltage is finely adjusted.
[0040] The upper mounting seat 5 is mounted on the top of the main mounting seat 1 through a horizontal guide rail, and the main mounting seat 1 can move back and forth along the horizontal direction relative to the upper mounting seat 5 under the driving of the motor of the horizontal guide rail. At this time, the tungsten electrode of the welding torch 7 realizes swinging movement through the horizontal guide rail, that is, the tungsten electrode tip 71 swings back and forth along the width direction of the weld 300 in the welding process.
[0041] The electric rotating platform 6 is arranged on the upper end of the upper mounting seat 5, and the electric rotating platform 6 drives the overall device of the upper mounting seat 5 and the lower part to rotate. The electric rotating platform 6 includes a motor, a shell and a rotating disc, the motor drives the rotating disc to rotate, the shell of the electric rotating platform 6 on the upper welding head 601 is fixed on the vertical moving piece of the height adjusting mechanism 500, and the shell of the electric rotating platform 6 on the lower welding head 602 is fixed on the horizontal moving piece of the second radial displacement adjusting mechanism. The electric rotating platform 6 has higher rotating precision and can more accurately control the angle of the rotation of the tungsten electrode relative to the tungsten electrode tip 71.
[0042] In order to more intuitively understand the position of the weld 300 and the welding process, the laser weld seam tracker 10 and the molten pool monitoring camera are mounted on the lower mounting frame 4, the laser weld seam tracker 10 and the molten pool monitoring camera are connected with a control system, and the control system can be provided with a display screen.
[0043] Generally, only one molten pool monitoring camera is needed. However, to improve the monitoring effect, separate molten pool monitoring cameras can be set in multiple directions around the tungsten electrode. Generally, the number of molten pool monitoring cameras is 1 to 3. Figure 4 The demonstration showed that there were three monitoring cameras for the molten pool: a first molten pool monitoring camera 81, a second molten pool monitoring camera 82, and a third molten pool monitoring camera 83. The three monitoring cameras were respectively located on the left and right sides and above the tungsten electrode tip 71.
[0044] For example Figure 8 In the welding operation between the can lid 200 and the can body 100, the movement trajectory of the tungsten electrode tip 71 on the welding head of the equipment proposed in this invention runs precisely along the trajectory of the weld seam 300. After the welding head is installed on the main rotating equipment and the tungsten electrode tip 71 is located at the weld seam 300, the position and tilt angle of the tungsten electrode are adjusted by the rotating device of this equipment, the guide rail of the welding head, and the rotating platform, and then the welding operation begins. During the welding operation, the tungsten electrode moves back and forth along the width direction of the weld seam 300 via the horizontal guide rail. Simultaneously, based on the position of the tungsten electrode tip and the welding wire in the wire feed tube 9, the rotation angle of the tungsten electrode and the welding wire relative to the weld seam 300 is adjusted by the electric rotating platform 6.
[0045] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.
Claims
1. A dual-head automatic welding equipment for dry storage containers of spent fuel, characterized in that, The device comprises a base (400), a main support seat (401), an upper rotating device (402), a lower rotating device (403), a first radial displacement adjusting mechanism, a second radial displacement adjusting mechanism, a lower welding head (602) and an upper welding head (601), the main support seat (401) is arranged on the base (400), the main support seat (401) is sequentially provided with the upper rotating device (402) and the lower rotating device (403) from top to bottom, the upper rotating device (402) is provided with the first radial displacement adjusting mechanism, the first radial displacement adjusting mechanism is connected with the upper welding head (601), the upper rotating device (402) is used for adjusting the angle of the upper welding head (601), and the first radial displacement adjusting mechanism is used for adjusting the radial distance of the upper welding head (601); the second radial displacement adjusting mechanism is connected with the lower welding head (602), the lower rotating device (403) is used for adjusting the angle of the lower welding head (602), and the second radial displacement adjusting mechanism is used for adjusting the radial distance of the lower welding head (602).
2. The dual-end automatic welding apparatus for a dry storage container of spent fuel according to claim 1, wherein The main support seat (401) is a circular shaft structure, the upper rotating device (402) comprises a gear ring (404), a rotating box body (405), a first driving motor (406) and a main driving gear, the gear ring (404) is fixed on the main support seat (401), a circular ring-shaped guide rail is arranged at the top of the gear ring (404), the rotating box body (405) is slidably connected with the circular ring-shaped guide rail through a plurality of first sliding blocks, the first driving motor (406) is fixedly arranged in the rotating box body (405), the main driving gear is arranged on the motor shaft of the first driving motor (406), and the main driving gear is meshed with the gear ring (404).
3. The dual-end automatic welding apparatus for a dry storage container of spent fuel according to claim 2, wherein The lower rotating device (403) is the same in structure as the upper rotating device (402), the lower rotating device (403) is arranged below the upper rotating device (402), the lower rotating device (403) comprises a gear ring (404), a rotating box body (405), a first driving motor (406) and a main driving gear, the gear ring (404) is fixed on the main support seat (401), a circular ring-shaped guide rail is arranged at the top of the gear ring (404), the rotating box body (405) is slidably connected with the circular ring-shaped guide rail through a plurality of first sliding blocks, the first driving motor (406) is fixedly arranged in the rotating box body (405), the main driving gear is arranged on the motor shaft of the first driving motor (406), and the main driving gear is meshed with the gear ring (404).
4. The dual-end automatic welding apparatus for a dry storage container of spent fuel according to claim 3, wherein A height adjusting mechanism (500) is arranged on the horizontal moving piece of the first radial displacement adjusting mechanism, and the upper welding head (601) is arranged on the vertical moving piece of the height adjusting mechanism (500); a lower welding head (602) is arranged on the horizontal moving piece of the second radial displacement adjusting mechanism.
5. The dual-end automatic welding apparatus for a dry storage container of spent fuel according to claim 4, wherein The first radial displacement adjusting mechanism comprises a mounting seat (701), a first guide rail group (702), a second sliding block (703), a sliding plate (704), a second drive motor (705) and a connecting seat, the mounting seat (701) is arranged in the rotating box body (405) of the upper rotating device (402), the mounting seat (701) is provided with the first guide rail group (702), the second drive motor (705) and a belt drive, a plurality of second sliding blocks (703) on the first guide rail group (702) are slidably connected with the sliding plate (704), and the motor shaft of the second drive motor (705) is fixedly connected with the pulley shaft of the driving pulley (706) of the conveying belt (707); the connecting seat is fixed on the conveying belt (707), the second sliding block (703) and the sliding plate (704) are arranged on the connecting seat, the second drive motor (705) drives the conveying belt (707) to drive the sliding plate (704) to slide on the first guide rail group (702), and the sliding plate (704) is a horizontal moving piece of the first radial displacement adjusting mechanism.
6. The dual-end automatic welding apparatus for a dry storage container of spent fuel according to claim 5, wherein The second radial displacement adjusting mechanism has the same structure as that of the first radial displacement adjusting mechanism, and comprises a mounting seat (701), a first guide rail group (702), a second sliding block (703), a sliding plate (704), a second drive motor (705) and a connecting seat, the mounting seat (701) is arranged in the rotating box body (405) of the upper rotating device (402), the mounting seat (701) is provided with the first guide rail group (702), the second drive motor (705) and a belt drive, a plurality of second sliding blocks (703) on the first guide rail group (702) are slidably connected with the sliding plate (704), and the motor shaft of the second drive motor (705) is fixedly connected with the pulley shaft of the driving pulley (706) of the conveying belt (707); the connecting seat is fixed on the conveying belt (707), the second sliding block (703) and the sliding plate (704) are arranged on the connecting seat, the second drive motor (705) drives the conveying belt (707) to drive the sliding plate (704) to slide on the first guide rail group (702), and the sliding plate (704) is a horizontal moving piece of the second radial displacement adjusting mechanism.
7. The dual-end automatic welding apparatus for a dry cask storage container for spent fuel according to claim 6, wherein The sliding plate (704) in the first radial displacement adjusting mechanism is a horizontal moving piece of the first radial displacement adjusting mechanism, the sliding plate (704) in the second radial displacement adjusting mechanism is a horizontal moving piece of the second radial displacement adjusting mechanism, the height adjusting mechanism (500) comprises an electric sliding table (501) and a welding head mounting support (502), and the welding head mounting support (502) is fixedly arranged on the sliding plate (704) of the first radial displacement adjusting mechanism; the welding head mounting support (502) is fixedly arranged on the sliding table of the electric sliding table (501), and the welding head mounting support (502) is a vertical moving piece of the height adjusting mechanism (500).
8. The dual-end automatic welding apparatus for a dry storage container of spent fuel according to claim 7, wherein The rotating box (405) of the upper rotating device (402) is provided with a welding wire feeding device and a welding wire straightening device used in cooperation with the upper welding head (601); the rotating box (405) of the lower rotating device (403) is provided with a welding wire feeding device and a welding wire straightening device used in cooperation with the lower welding head (602).
9. The dual-end automatic welding apparatus for a dry cask storage container for spent fuel according to claim 7, wherein The upper welding head (601) and the lower welding head (602) are the same in structure, and the upper welding head (601) and the lower welding head (602) comprise a main mounting seat (1), an arc rack (2), a main mounting frame (3), a lower mounting frame (4), an upper mounting seat (5), a welding torch (7) and a wire feeding pipe (9), a guide wheel is fixed on the inner wall of the main mounting seat (1), a through groove is arranged in the middle of the arc rack (2), arc-shaped grooves are arranged on both sides of the arc rack (2), and the guide wheel of the main mounting seat (1) is in sliding fit with the arc-shaped grooves of the arc rack (2); one side of the arc rack (2) is fixedly connected with the main mounting frame (3), a vertical displacement guide rail is arranged on the main mounting frame (3), the lower mounting frame (4) is slidably arranged on the vertical displacement guide rail, the welding torch (7) and the wire feeding pipe (9) are arranged on the lower mounting frame (4), and the welding torch (7) moves up and down along the vertical direction through the vertical displacement guide rail; the upper mounting seat (5) is arranged on the top of the main mounting seat (1) through a horizontal guide rail, and the horizontal guide rail realizes horizontal displacement of the welding torch (7).
10. The dual-end automatic welding apparatus for a dry storage container of spent fuel according to claim 9, wherein The upper welding head (601) and the lower welding head (602) are further provided with an electric rotating platform (6), the electric rotating platform (6) is arranged on the upper end of the upper mounting seat (5), the electric rotating platform (6) realizes rotation of the upper mounting seat (5) and the welding torch (7), and the lower mounting frame (4) is provided with a laser weld seam tracker (10) and a molten pool monitoring camera.