An automated X-ray inspection device for longitudinal welds of cylindrical components

Abstract

This invention provides an automated X-ray inspection device for longitudinal welds of cylindrical components. The device's automatic rotating platform is a hollow rotating structure, with a leveling mechanism arranged circumferentially on the upper support surface to support and level the shell section product, ensuring that the longitudinal weld is parallel to the lifting paths of the imaging plate and X-ray generator. The vertical lifting mechanisms of the imaging plate and X-ray generator are located on the inner and outer sides of the shell section product. An imaging plate telescopic mechanism is fixed to the vertical lifting mechanism of the imaging plate, and the imaging plate is fixed near the end of the shell section product. The vertical lifting mechanism of the imaging plate drives the imaging plate to move up and down, matching the height of the imaging plate with the height of the X-ray generator. The telescopic mechanism of the imaging plate drives the imaging plate to move horizontally. The X-ray generator is installed at the upper end of the vertical lifting mechanism of the X-ray generator, driving the X-ray generator to move up and down, thus performing full-section inspection of the longitudinal weld.

Description

Technical Field

[0001] This invention belongs to the field of weld inspection of cylindrical rotating components, and specifically relates to an automated X-ray inspection device suitable for longitudinal welds of cylindrical components. Background Technology

[0002] With the construction of digital production lines and the explosive growth of batch production and research and development tasks, the introduction of various advanced manufacturing technologies has significantly improved production capacity. However, this has also brought immense pressure to testing. With the unfolding of high-density launch missions, the production volume of shell sections has increased dramatically. According to welding quality control requirements (GJB481-1988) and general requirements for welding quality control of aerospace products (QJ3099-1999), the internal quality of welds in aluminum alloy tank shell sections requires 100% radiographic inspection. Currently, the workload for shell sections is substantial. Figure 1 The shell section shown requires eight radiographic tests to complete the radiographic testing. Only after the test is completed can the tank be welded and formed.

[0003] After the longitudinal seams of the tank shell section (or cylinder section) are welded, each longitudinal seam must be inspected by X-ray. Only after all welds pass the quality inspection can the next process of circumferential welding of the tank assembly proceed. Currently, the tank shell section welds in the existing launch vehicle series still use film X-ray inspection technology. This involves manually adjusting the X-ray head and the product to expose the longitudinal seams of the shell section. This inspection process has the following main problems:

[0004] (1) Low degree of digitization: The X-ray inspection process of film is complicated, and the film is non-digital structure data, which is inconvenient for later storage and review.

[0005] Radiographic inspection based on film technology requires processes such as radiographic setup, film exposure, darkroom development, fixing, drying, and film evaluation. The inspection cycle is long; inspecting a single shell section's longitudinal seam takes approximately two hours. Furthermore, the subsequent storage and exchange of radiographic films are inconvenient, especially during quality review, which requires significant time and effort to rummage through boxes and documents to find and review the films. In addition, traditional film radiography consumes a large amount of film, and the consumption of consumables such as film processors and developing and fixing solutions also results in high inspection costs.

[0006] (2) Low level of automation: Film X-ray inspection requires a lot of labor, manual labor is intensive, the inspection cycle is long, and the efficiency of automated inspection is low.

[0007] During conventional radiographic testing, inspectors must repeatedly enter and exit the radiographic room to adjust the shell section, X-ray machine head, and tooling equipment, measuring and adjusting to align the longitudinal slit with the X-ray source. Then, they must manually apply lettering and lay the film. Most shell sections require more than eight manual adjustments within the radiographic room to complete the inspection of a single product. The setup and adjustments before radiography, film cutting, and darkroom film processing all consume significant manpower and time, requiring at least 2-3 inspectors and taking approximately two hours to complete the inspection. It is evident that the traditional radiographic testing process is complex, labor-intensive, and has a long inspection cycle.

[0008] (3) The shell section deforms significantly under its own weight and becomes elliptical. The support rollers of the frame are generally designed with support points according to the standard outer circle of the storage tank. When switching to the next longitudinal seam after one weld seam has passed inspection, the product needs to be rotated manually. After the shell section (especially the thin-walled shell section) deforms, it is difficult for the operator to rotate the product on the frame.

[0009] (4) When the operator rotates the product, the frame is difficult to fix. Under the force applied by the operator, the frame will move and needs to be readjusted relative to the X-ray generator, imaging plate and its actuator.

[0010] In summary, to address the issues of high manual labor intensity and low efficiency in the current inspection of tank welds, and to meet the demands of high-density launch missions, it is necessary to conduct research on the application of digital radiographic inspection capabilities and develop an automated, digital inspection system. Summary of the Invention

[0011] To improve the digital radiographic inspection capability and efficiency of weld seams in storage tank shell sections, an automated X-ray inspection device suitable for longitudinal weld seams of cylindrical components is provided. This device replaces the traditional manual film radiography method, enabling fully automated digital radiographic inspection of shell section weld seams. It significantly improves the digitalization, automation, and intelligence of the inspection process, and can acquire digital radiographic images of each weld location in real time while meeting the requirements for inspection sensitivity.

[0012] The technical solution provided by this invention is as follows:

[0013] An automated X-ray inspection device for longitudinal welds of cylindrical components includes an imaging plate vertical lifting mechanism, an imaging plate telescopic mechanism, an imaging plate, an X-ray generator, an X-ray generator vertical lifting mechanism, an automatic rotary platform, and a leveling mechanism.

[0014] The automatic rotating platform, the vertical lifting mechanism of the imaging plate, and the vertical lifting mechanism of the X-ray generator are leveled and fixed to the foundation using anchor bolts and leveling shims.

[0015] The automatic rotary platform has a hollow structure, and a leveling mechanism is arranged circumferentially on the upper support surface. The leveling mechanism supports and levels the shell section product, so that the longitudinal weld is parallel to the lifting path of the imaging plate and the X-ray generator. The automatic rotary platform drives the shell section product to rotate, so that the longitudinal weld, the imaging plate, and the X-ray generator are aligned.

[0016] The imaging plate vertical lifting mechanism and the X-ray generator vertical lifting mechanism are located on the inner and outer sides of the shell section product. The imaging plate vertical lifting mechanism is fixed with an imaging plate telescopic mechanism. The imaging plate is fixed near the end of the shell section product. The imaging plate vertical lifting mechanism drives the imaging plate to move up and down, so that the height of the imaging plate matches the height of the X-ray generator. The imaging plate telescopic mechanism drives the imaging plate to move horizontally, adjusting the distance between it and the shell section product.

[0017] The X-ray generator is installed at the upper end of the vertical lifting mechanism of the X-ray generator, which drives the X-ray generator 5 to move up and down to perform full-section inspection of the longitudinal weld.

[0018] An automated X-ray inspection device for longitudinal welds of cylindrical components, provided by the present invention, has the following advantages:

[0019] (1) The present invention provides an automated X-ray inspection device for longitudinal welds of cylindrical components. It adopts a vertical positioning inspection method, which can effectively avoid product structure deformation caused by the weight of the tank. It cleverly utilizes the vertical lifting mechanism of the imaging plate and the vertical lifting mechanism of the X-ray generator. The synchronous lifting of the imaging plate and the X-ray generator is achieved by driving the slide table with a motor. This realizes the vertical lifting, mounting and unmounting operations of the tank shell section in a limited space, as well as the high-quality inspection of the weld.

[0020] (2) The present invention provides an automated X-ray inspection device suitable for longitudinal welds of cylindrical components. The automatic rotary platform, the vertical lifting mechanism of the imaging plate and the vertical lifting mechanism of the X-ray generator are leveled and fixed on the foundation by anchor bolts and leveling shims. At the same time, a leveling mechanism is installed on the hollow rotary platform in the circumferential direction to realize the multi-point vertical leveling of the rotary platform in the circumferential direction, which helps to ensure the alignment of the imaging plate and the X-ray generator and the scanning path of the X-ray generator is the same as that of the longitudinal weld.

[0021] (3) The present invention provides an automated X-ray inspection device for longitudinal welds of cylindrical components. Through the matching of radial adjustment mechanism and positioning scale, it can support tank shell sections of different diameters without changing tooling, which greatly reduces manpower and material resources and effectively improves inspection efficiency. Attached Figure Description

[0022] Figure 1 A schematic diagram of the shell section product and longitudinal weld seams;

[0023] Figure 2A perspective view of an automated X-ray inspection device suitable for longitudinal welds of cylindrical components;

[0024] Figure 3 A side view of an automated X-ray inspection device suitable for longitudinal welds of cylindrical components;

[0025] Figure 4 A schematic diagram of the vertical lifting mechanism for the imaging plate;

[0026] Figure 5 This is a schematic diagram of the imaging plate telescopic mechanism;

[0027] Figure 6 A schematic diagram of the vertical lifting mechanism of an X-ray generator;

[0028] Figure 7 This is a schematic diagram of the automatic rotary platform.

[0029] Figure 8 The images show a cross-sectional view (left half) and a side view (right half) of the automatic rotary platform.

[0030] Figure 9 This is a schematic diagram of the leveling mechanism;

[0031] Figure 10 This is a schematic diagram of the radial adjustment mechanism. Detailed Implementation

[0032] The features and advantages of the present invention will become clearer and more apparent from the following detailed description.

[0033] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0034] This invention provides an automated X-ray inspection device for longitudinal welds of cylindrical components. Addressing the difficulties encountered in manual adjustment of the shell section during actual operation, this invention proposes a system modification scheme using a vertical overall inspection method, based on a summary of key aspects of the product welding, inspection, and transfer process. After the longitudinal weld of the shell section is completed, it is vertically hoisted and transported to the inspection station. The X-ray generator, imaging plate, and its actuator are moved vertically up and down to ensure the final position of the X-ray generator and imaging plate are aligned, solving the technical problem of large deformation of the shell section itself and difficulty in adjustment and positioning. Simultaneously, the bottom surface of the shell section is placed on a rotating platform, facilitating operations such as rotating, positioning, and locking the product. Furthermore, the newly designed shell section longitudinal weld X-ray inspection system is compatible with products of various diameters including Φ2m / Φ2.25m / Φ3m / Φ3.35m (see...). Figure 3This solution covers the inspection needs of all longitudinal seams in the tank shell section. Its implementation will greatly improve the efficiency of X-ray inspection of longitudinal seams in the shell section, replace the traditional manual film radiography method, reduce the labor intensity of workers, realize fully automated digital X-ray inspection of the shell section welds, significantly improve the digitalization, automation and intelligence of the inspection process, and collect X-ray inspection digital images of each weld location in real time, while meeting the inspection sensitivity requirements and improving the quality of product inspection.

[0035] This invention provides an automated X-ray inspection device suitable for longitudinal welds of cylindrical components, such as... Figure 2 and Figure 3 As shown, it includes: imaging plate vertical lifting mechanism 2, imaging plate telescopic mechanism 3, imaging plate 4, X-ray generator 5, X-ray generator vertical lifting mechanism 6, automatic rotating platform 8, and leveling mechanism 9.

[0036] The automatic rotating platform 8, the imaging plate vertical lifting mechanism 2, and the X-ray generator vertical lifting mechanism 6 are the basic components, which are leveled and fixed on the foundation 1 by anchor bolts and leveling shims. The remaining moving parts are all installed on the basic components, and the control system realizes servo drive, data acquisition and feedback.

[0037] To reduce the space requirements for longitudinal weld inspection, the automatic rotary platform 8 is placed within the automatic rotary platform settlement installation area opened on the foundation 1, creating a height difference with the installation of the imaging plate vertical lifting mechanism 2. The automatic rotary platform 8 has a hollow structure, and a leveling mechanism 9 is arranged circumferentially on the upper support surface. The leveling mechanism 9 supports and levels the shell section product, making the longitudinal weld parallel to the lifting path of the imaging plate 4 and the X-ray generator 5.

[0038] The imaging plate vertical lifting mechanism 2 and the X-ray generator vertical lifting mechanism 6 are located on the inner and outer sides of the shell section product. An imaging plate telescopic mechanism 3 is fixed to the imaging plate vertical lifting mechanism 2. An imaging plate 4 is fixed to the end of the imaging plate telescopic mechanism 3 near the shell section product. The imaging plate vertical lifting mechanism 2 drives the imaging plate 4 to move up and down, matching the height of the imaging plate 4 with the height of the X-ray generator 5. The imaging plate telescopic mechanism 3 drives the imaging plate to move horizontally, adjusting the distance between it and the shell section product. The X-ray generator 5 is installed at the upper end of the X-ray generator vertical lifting mechanism 6, driving the X-ray generator 5 to move up and down, performing full-section inspection of the longitudinal weld seam.

[0039] Since there may be multiple longitudinal welds on the shell section product, to ensure that the imaging plate 4 and X-ray generator 5 can always be aligned at these welds, the vertical lifting mechanism 6 of the X-ray generator is coaxial with the rotation center of the automatic rotating platform 8, and the emitting end of the X-ray generator 5 is aligned with the imaging plate. The X-ray generator automatically focuses by adjusting the focal length of the X-ray generator for shell section products of different diameters (Φ2000 / Φ2250 / Φ3000 / Φ3350).

[0040] like Figure 4 As shown, the imaging plate vertical lifting mechanism 2 includes a first motor 21, a vertical base 22, an upper bearing seat 23, a first guide rail slider mechanism 24, a lateral connecting plate 25, a first lead screw 26, and a lower bearing seat 27.

[0041] The first motor 21 is connected to the upper surface of the vertical base 22 by bolts. The output shaft of the first motor 21 is connected to the first lead screw 26. The first lead screw 26 is fixed to the side of the vertical base 22 by the upper bearing seat 23 and the lower bearing seat 27. The first guide rail slider mechanism 24 is fixed to the side of the vertical base 22 by bolts, and the two guide rails are located on both sides of the first lead screw 26. The slider of the first guide rail slider mechanism 24 and the lead screw nut of the first lead screw 26 are connected to the imaging plate telescopic mechanism 3. During operation, the first motor 21 drives the first lead screw 26 to rotate, which in turn drives the lead screw nut and the first guide rail slider mechanism 24 to move the imaging plate telescopic mechanism 3 up and down.

[0042] like Figure 5 As shown, the imaging plate telescopic mechanism 3 includes a second guide rail slider mechanism 31, a rack 32, a drive gear 33, a telescopic base 34, and a second motor 35.

[0043] The second guide rail slider mechanism 31 includes a lateral guide rail and a horizontal guide rail, which are connected to the side and bottom of the telescopic base 34 respectively via sliders. One end of the telescopic base 34 is fixed to the imaging plate. A rack 32 is connected to the side of the telescopic base 34 via bolts. The rack 32 meshes with a drive gear 33, which is connected to the output shaft of the second motor 35 using screws. The second motor 35 is connected to the vertical base 22 via bolts. During operation, the second motor 35 rotates the drive gear 33, thereby driving the rack 32, the slider on the second guide rail slider mechanism 31, and the telescopic base 34 to move horizontally along the guide rails.

[0044] like Figure 6 As shown, the vertical lifting mechanism 6 of the X-ray generator includes a lifting rod 61, a cable bundle track 62, and a track support frame 63. The lifting rod 61 and the track support frame 63 are fixed to the foundation 1 by anchor bolts and leveling shims. The lifting rod 61 is a multi-stage lifting mechanism, with the X-ray generator 5 fixed at its top. The cables of the X-ray generator 5 are centrally fixed within the cable bundle track 62, and both ends of the cable bundle track 62 are fixed to the cable outlet of the X-ray generator 5 and the track support frame 63, respectively, forming a smooth transition between the lifting rod 61 and the track support frame 63 without flipping. The cables of the X-ray generator 5 are slightly brittle and not resistant to bending; the cable bundle track 62 constrains the cables, preventing small-angle bending.

[0045] like Figure 7 and Figure 8As shown, the automatic rotary platform 8 includes a rotary platform 81, a rotary support 82, a drive gear 83, a motor support 84, a third motor 85, and a platform base 86; the rotary support 82 is a bearing with a driven gear on its outer ring.

[0046] The slewing platform 81 is bolted to the outer ring of the slewing support 82, and the inner ring of the slewing support 82 is bolted to the platform base 86. The platform base 86 is fixed to the foundation 1 with anchor bolts and leveling shims. The third motor 85 is bolted to the motor support 84 and is mounted on the side of the platform base 86. The drive gear 83 is fixed to the motor shaft with screws. During operation, the third motor 85 rotates to drive the drive gear 83. The drive gear 83 meshes with the driven gear on the outer ring of the slewing support 82, causing the outer ring of the slewing support 82 to rotate, thereby causing the slewing platform 81 on the slewing support 82 to rotate around the central axis.

[0047] During longitudinal seam inspection, the shell section is in a state where the upper and lower end faces are not trimmed after welding. Since the tank shell panels are mostly thinned using chemical milling, chemical milling corrosion in the remaining areas at the upper and lower ends causes unevenness on the end faces. Therefore, vertical inspection places high demands on the positioning and leveling of the automatic rotary platform 8. To solve the above problems, the automatic rotary platform 8 of this invention uses leveling shims for base leveling. Simultaneously, a hollow rotary platform was developed and adapted with a leveling mechanism that incorporates a lead screw, enabling multi-point vertical leveling of the rotary platform along the circumference.

[0048] like Figure 9 As shown, the leveling mechanism 9 includes a positioning support 91, a rotating handwheel 92, an axial limiting block 93, a connecting plate 94, a second lead screw 95, and a baffle 96. The positioning support 91 is connected to the top end face of the second lead screw 95 by bolts. The rotating handwheel 92 engages with the external thread of the second lead screw 95 through its internal thread. At the same time, the boss at the bottom of the rotating handwheel 92 engages with the axial limiting block 93 to achieve rotation around the axis while the height of the rotating handwheel remains unchanged, and the height of the second lead screw 95 moves. The axial limiting block 93 is fixed by bolts connected to the connecting plate 94. The baffle 96 is connected to the lower end face of the second lead screw 95 by screws to achieve axial limit positioning of the second lead screw 95.

[0049] To further determine the leveling accuracy, a cross laser level is used on the vertical lifting mechanism 2 of the imaging plate to automatically calibrate the leveling accuracy. When the vertical line of the cross laser coincides with the longitudinal weld seam, the positioning is determined to be accurate, and weld seam inspection can begin.

[0050] Different tank shell sections have varying diameters, with Φ2000 / Φ2250 / Φ3000 / Φ3350 tank shell sections having the highest requirements. Currently, horizontal inspection methods require changing support fixtures to inspect welds on tank shell sections of different diameters, which is time-consuming, labor-intensive, and inefficient. To solve these problems, this invention proposes a vertical positioning inspection method. This method incorporates a leveling mechanism, using a radial adjustment mechanism and a matching positioning scale. This allows for the inspection of longitudinal welds on tank shell sections of different diameters without changing fixtures, significantly reducing manpower and material resources and effectively improving inspection efficiency.

[0051] like Figure 10 As shown, at least three sets of radial adjustment mechanisms are evenly distributed on the rotary platform 81 of the automatic rotary platform 8. The proximal and distal ends of each set of radial adjustment mechanisms are equidistant from the axis of the rotary platform. The radial adjustment mechanism includes a radially mounted adjustment seat 811. A radial channel 812 is provided on the upper surface of the adjustment seat 811, and an elongated hole 813 is opened in the middle of the radial channel 812. The connecting plate 94 of the leveling mechanism 9 rests in the radial channel 812. One end of the second lead screw 95, which is fixed with a baffle 96, passes through the elongated hole 813. The connecting plate 94 slides along the radial channel 812, driving the entire leveling mechanism 9 to adjust radially. Positioning scales 814 are installed on both sides of the radial channel 812. The proximal and distal ends of each set of positioning scales 814 are equidistant from the axis of the rotary platform. According to the scale of the positioning scales 814, the leveling mechanism 9 and its upper shell product can be visualized and positioned.

[0052] During longitudinal weld inspection, the shell section is placed vertically on the leveling mechanism of the automatic rotary platform (allowing the product to easily rotate around its axis). The leveling mechanism and scale ensure that the product is basically aligned with the rotary table. The radial motion actuators of the X-ray generator and imaging plate are located on the inner and outer sides of the product, respectively, enabling the imaging plate to have radial movement adjustment and vertical lifting functions. It can provide feedback on the actual radial and axial positions of the X-ray generator and imaging plate relative to the Φ2000 / Φ2250 / Φ3000 / Φ3350 shell section product throughout the process. After the imaging plate and X-ray generator are aligned, they are automatically fed (synchronously or individually controlled), and the automatic radiographic testing of the longitudinal weld of the shell section is completed in conjunction with the DR system.

[0053] The present invention has been described in detail above with reference to specific embodiments and exemplary examples; however, these descriptions should not be construed as limiting the present invention. Those skilled in the art will understand that various equivalent substitutions, modifications, or improvements can be made to the technical solutions and embodiments of the present invention without departing from the spirit and scope of the invention, and all such modifications and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims.

[0054] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. An automated X-ray inspection device suitable for longitudinal welds of cylindrical components, characterized in that, It includes an imaging plate vertical lifting mechanism, an imaging plate telescopic mechanism, an imaging plate, an X-ray generator, an X-ray generator vertical lifting mechanism, an automatic rotary platform, and a leveling mechanism; The automatic rotating platform, the vertical lifting mechanism of the imaging plate, and the vertical lifting mechanism of the X-ray generator are leveled and fixed to the foundation using anchor bolts and leveling shims. The automatic rotary platform has a hollow structure, and a leveling mechanism is arranged circumferentially on the upper support surface. The leveling mechanism supports and levels the shell section product, so that the longitudinal weld is parallel to the lifting path of the imaging plate and the X-ray generator. The automatic rotary platform drives the shell section product to rotate, so that the longitudinal weld, the imaging plate, and the X-ray generator are aligned. The imaging plate vertical lifting mechanism and the X-ray generator vertical lifting mechanism are located on the inner and outer sides of the shell section product. The imaging plate vertical lifting mechanism is fixed with an imaging plate telescopic mechanism. The imaging plate is fixed near the end of the shell section product. The imaging plate vertical lifting mechanism drives the imaging plate to move up and down, so that the height of the imaging plate matches the height of the X-ray generator. The imaging plate telescopic mechanism drives the imaging plate to move horizontally, adjusting the distance between it and the shell section product. The X-ray generator is installed at the upper end of the vertical lifting mechanism of the X-ray generator, which drives the X-ray generator to move up and down to perform full-section inspection of the longitudinal weld. The imaging plate vertical lifting mechanism includes a first motor, a vertical base, an upper bearing seat, a first guide rail slider mechanism, a lateral connecting plate, a first lead screw, and a lower bearing seat. The first motor is connected to the upper end face of the vertical base by bolts, and the output shaft of the first motor is connected to the first lead screw. The first lead screw is fixed to the side of the vertical base by the upper and lower bearing seats. The first guide rail slider mechanism is fixed to the side of the vertical base by bolts, and two guide rails are located on both sides of the first lead screw. The slider of the first guide rail slider mechanism and the lead screw nut are connected to the imaging plate telescopic mechanism. During operation, the first motor drives the first lead screw to rotate, which in turn drives the lead screw nut and the first guide rail slider mechanism to move the imaging plate telescopic mechanism up and down. The imaging plate telescopic mechanism includes a second guide rail slider mechanism, a rack, a drive gear, a telescopic base, and a second motor. The second guide rail slider mechanism includes a lateral guide rail and a horizontal guide rail, which are connected to the side and bottom of the telescopic base respectively via sliders. One end of the telescopic base is fixed to the imaging plate. The rack is connected to the side of the telescopic base by bolts and meshes with the drive gear. The drive gear is connected to the output shaft of the second motor by screws. The second motor is connected to the vertical base by bolts. During operation, the second motor rotates the drive gear, which drives the rack, the slider on the second guide rail slider mechanism, and the telescopic base to move horizontally along the guide rails. The vertical lifting mechanism for the X-ray generator includes a lifting rod, a cable bundle track, and a track support frame. The lifting rod and track support frame are fixed to the foundation with anchor bolts and leveling shims. The lifting rod is a multi-stage lifting mechanism with the X-ray generator fixed at its top. The X-ray generator's cables are centrally fixed inside the cable bundle track, and both ends of the cable bundle track are fixed to the X-ray generator cable outlet and the track support frame, respectively, forming a smooth transition between the lifting rod and the track support frame without any tipping. The leveling mechanism includes a positioning support, a rotating handwheel, an axial limiting block, a connecting plate, a second lead screw, and a baffle. The positioning support is connected to the top end face of the second lead screw by bolts. The rotating handwheel engages with the external thread of the second lead screw via its internal thread. Simultaneously, the boss at the bottom of the rotating handwheel engages with the axial limiting block to achieve rotation around the axis while the height of the rotating handwheel remains constant, and the height of the second lead screw moves. The axial limiting block is fixed by bolts connected to the connecting plate. The baffle is connected to the lower end face of the second lead screw by screws to implement axial limit control of the second lead screw. The automatic rotary platform has at least three sets of radial adjustment mechanisms evenly distributed on its rotary platform. The proximal and distal ends of each set of radial adjustment mechanisms are equidistant from the axis of the rotary platform. The radial adjustment mechanism includes a radially mounted adjustment seat with a radial groove on its upper surface and an elongated hole in the middle of the radial groove. The connecting plate of the leveling mechanism falls in the radial groove, and the end of the second lead screw with a baffle passes through the elongated hole. The connecting plate slides along the radial groove to drive the entire leveling mechanism to adjust radially.

2. The automated X-ray inspection device for longitudinal welds of cylindrical components according to claim 1, characterized in that, The vertical lifting mechanism of the X-ray generator is coaxial with the rotation center of the automatic rotary platform.

3. The automated X-ray inspection device for longitudinal welds of cylindrical components according to claim 1, characterized in that, The automatic rotary platform includes a rotary platform, a rotary support, a drive gear, a motor support, a third motor, and a platform base; the rotary support is a bearing with a driven gear on its outer ring; The slewing platform is bolted to the outer ring of the slewing support, and the inner ring of the slewing support is bolted to the platform base. The platform base is fixed to the foundation with anchor bolts and leveling shims. The third motor is bolted to the motor support and is installed on the side of the platform base. The drive gear is fixed to the motor shaft with screws. During operation, the third motor rotates to drive the drive gear. The drive gear meshes with the driven gear of the outer ring of the slewing support, causing the outer ring of the slewing support to rotate, and causing the slewing platform on the slewing support to rotate around the central axis.

4. The automated X-ray inspection device for longitudinal welds of cylindrical components according to claim 1, characterized in that, The automatic rotary platform is placed in the automatic rotary platform settlement installation area opened on the foundation, forming a height difference with the installation of the imaging plate vertical lifting mechanism.

5. The automated X-ray inspection device for longitudinal welds of cylindrical components according to claim 1, characterized in that, Positioning scales are installed on both sides of the radial channel, and the near and far ends of each set of positioning scales are equidistant from the axis of the rotary platform.

Images