Ray inspection system

Abstract

The embodiment of the disclosure provides a ray inspection system, comprising: a ray source device (1) comprising a first fixed platform (11) and a ray source (10), the first fixed platform (11) being configured to support the ray source (10), the ray source (10) being configured to emit ray beams, the mounting position and / or mounting posture of the ray source (10) relative to the first fixed platform (11) being adjustable; the detection device (2) comprises a second fixing platform (21) and a detection assembly (28), the second fixing platform (21) is configured to support the detection assembly (28), the detection assembly (28) is configured to receive the ray beam, and the installation position and / or the installation posture of the detection assembly (28) relative to the second fixing platform (21) are / is adjustable; wherein the detection assembly (28) and the radiation source (10) are oppositely arranged along a first direction (x), and an inspection channel for an inspected object (6) to pass through is formed between the radiation source device (1) and the detection device (2).

Description

Technical Field

[0001] The present disclosure relates to the field of radiation detection technology, and in particular to a ray inspection system. Background Art

[0002] The radiographic inspection system can be used to perform radiographic inspection on cargo or other items in containers or vehicles. It includes a radiation source and a detector. The radiation source is used to emit radiation to pass through the inspected object, and the detector is used to receive the radiation beam for imaging. An inspection channel is formed between the radiation source and the detector for the inspected object to pass through. In the process of passing through the inspection channel, the inspected objects such as containers and vehicles pass through the fan-shaped beam surface formed by the radiation, and the beam continuously scans the inspected objects such as containers and vehicles.

[0003] In current X-ray inspection systems, the distance between the X-ray source and the detector, and the distance between the X-ray source and the detector are generally fixed, which cannot meet diverse detection needs. Summary of the invention

[0004] The present disclosure provides a ray inspection system that can adapt to more inspection conditions.

[0005] The present disclosure provides a radiographic inspection system, comprising:

[0006] A radiation source device, comprising a first fixed platform and a radiation source, wherein the first fixed platform is configured to support the radiation source, the radiation source is configured to emit a radiation beam, and the installation position and / or installation posture of the radiation source relative to the first fixed platform is adjustable; and

[0007] The detection device comprises a second fixed platform and a detection assembly, wherein the second fixed platform is configured to support the detection assembly, the detection assembly is configured to receive the radiation beam, and the installation position and / or installation posture of the detection assembly relative to the second fixed platform is adjustable;

[0008] The detection assembly and the radiation source are arranged opposite to each other along a first direction, and an inspection channel for the inspected object to pass through is formed between the radiation source device and the detection device.

[0009] In some embodiments, the radiation source device further comprises:

[0010] A first movable platform is movably disposed above the first fixed platform along a first direction;

[0011] Wherein, the ray source is arranged on the first movable platform.

[0012] In some embodiments, the radiation source device further comprises:

[0013] The first guiding mechanism is connected between the first fixed platform and the first movable platform, and is configured to provide guidance for the movement of the first movable platform.

[0014] In some embodiments, the first guide mechanism comprises:

[0015] At least two first guide rails are spaced apart along a second direction, the first guide rails extend along the first direction, and the second direction is perpendicular to the first direction; and

[0016] At least two first sliding members are matched with at least two first guide rails in a one-to-one correspondence, and the first sliding members can slide along the first guide rails;

[0017] Wherein, the first movable platform is connected to at least two first sliding members.

[0018] In some embodiments, the radiation source device further includes a first driving mechanism, and the first driving mechanism includes:

[0019] A first power member, disposed on the first fixed platform and configured to provide a rotational driving force;

[0020] A first lead screw extending in a first direction and rotatably disposed on the first fixed platform around its own axis, one end of the first lead screw being connected to an output end of the first power member; and

[0021] The first nut is screwed on the first lead screw and connected to the first movable platform.

[0022] In some embodiments, the radiation source device further includes a base, the base is disposed on the first movable platform, and the radiation source is mounted on the first movable platform through the base.

[0023] In some embodiments, the radiation source device further includes a first bracket, and the radiation source is mounted on the base via the first bracket.

[0024] In some embodiments, the first bracket includes:

[0025] A carrier portion configured to mount a radiation source; and

[0026] A plurality of supporting legs are connected between the base and the bearing part.

[0027] In some embodiments, one end of the base close to the inspection channel along the first direction extends beyond the first movable platform, and at least a portion of the first bracket is located on the extending portion of the base.

[0028] In some embodiments, the radiation source device further includes a collimator, which is disposed on the first bracket, and the alignment accuracy between the radiation source and the collimator is configured to be ensured by the processing accuracy of the first bracket.

[0029] In some embodiments, a guide pin may be provided on the base, the axis of the guide pin extending in the height direction and passing through the target point of the radiation source, the first bracket is positioned by the guide pin and can rotate around the axis of the guide pin to adjust the rotation angle of the radiation source.

[0030] In some embodiments, the radiation source device further includes a collimator and a protective member, wherein the protective member is disposed between the collimator and the radiation source, and the protective member is configured to shield the radiation beam.

[0031] In some embodiments, the ray source device further includes a first bracket, and the ray source is mounted on the first bracket and has an adjustable pitch angle.

[0032] In some embodiments, the radiation source device further includes a collimator, and the collimator includes:

[0033] Mounting plate; and

[0034] Two collimating plates are arranged on the mounting plate, and a gap extending in the height direction is formed between the two collimating plates. The mounting positions along the second direction relative to the vertical center plane of the beam can be synchronously adjusted to adjust the width of the gap, and the second direction is perpendicular to the first direction.

[0035] In some embodiments, the detection device further comprises:

[0036] A second movable platform is movably disposed above the second fixed platform along the first direction;

[0037] Wherein, the detection component is arranged on the second movable platform.

[0038] In some embodiments, the detection device further comprises:

[0039] The second guiding mechanism is connected between the second fixed platform and the second movable platform, and is configured to provide guidance for the movement of the second movable platform.

[0040] In some embodiments, the second guide mechanism comprises:

[0041] At least two second guide rails are spaced apart along a second direction, the second guide rails extend along the first direction, and the second direction is perpendicular to the first direction; and

[0042] At least two second sliding members are matched with the at least two second guide rails in a one-to-one correspondence, and the second sliding members can slide along the second guide rails;

[0043] Wherein, the second movable platform is connected to at least two second sliding members.

[0044] In some embodiments, the detection device further includes a second driving mechanism, and the second driving mechanism includes:

[0045] A second power member, disposed on the second fixed platform and configured to provide a rotational driving force;

[0046] A second lead screw extending in the first direction and rotatably disposed on the second fixed platform around its own axis, one end of the second lead screw being connected to the output end of the second power member; and

[0047] The second nut is screwed on the second lead screw and connected to the second movable platform.

[0048] In some embodiments, the detection device further comprises:

[0049] The second bracket is arranged on the second movable platform and is configured to carry the detection component.

[0050] In some embodiments, the detection device further comprises:

[0051] A connecting seat, disposed on the second bracket; and

[0052] The second driving mechanism is configured to drive the second bracket to move along a second direction, and the second direction is perpendicular to the first direction.

[0053] In some embodiments, the detection device further comprises:

[0054] A connecting seat, disposed on the second bracket; and

[0055] The third driving mechanism is arranged on the connecting seat, and the third driving mechanism has an output shaft, which extends along the first direction. The output shaft is connected to the middle area of ​​the detection component along its own length direction. The third driving mechanism is configured to drive the detection component to rotate in a vertical plane around the axis of the output shaft so that the strip-shaped detection component is aligned with the radiation beam.

[0056] In some embodiments, the third driving mechanism comprises:

[0057] A third power member is disposed on the connecting seat and is configured to provide a rotational driving force;

[0058] The reducer is connected to the output end of the third power member, and the reducer outputs rotational motion through an output shaft.

[0059] In some embodiments, the detection assembly includes:

[0060] Install the boom; and

[0061] A plurality of detectors are arranged on the mounting arm along the height direction and are detachable.

[0062] The ray inspection system of the disclosed embodiment sets the ray source and the detection component to a structure with adjustable installation position and / or installation posture, and can conveniently adjust the position of the ray source and the detection component according to the detection requirements, so that the range of the ray beam can adapt to different objects to be inspected, or obtain better detection indicators for different objects to be inspected. Therefore, this ray inspection system can adapt to different detection conditions and has stronger versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0064] Figure 1 1 is a side view of some embodiments of the radiographic inspection system of the present disclosure.

[0065] Figure 2 FIG. 1 is a top view of some embodiments of the radiographic inspection system of the present disclosure.

[0066] Figure 3 The diagram is a side view of some embodiments of a radiation source device in a radiation inspection system of the present disclosure.

[0067] Figure 4 1 is a top view of some embodiments of the radiation source device in the radiation inspection system of the present disclosure.

[0068] Figure 5 Schematic diagram of the installation structure of the radiation source, protective box and collimator.

[0069] Figure 6 It is a side view of some embodiments of the detection device in the radiographic inspection system of the present disclosure.

[0070] Figure 7 1 is a top view of some embodiments of the detection device in the radiographic inspection system of the present disclosure. Description of Reference Numerals

[0071] 1. Radiation source device; 10. Radiation source; 11. First fixed platform; 12. First guide rail; 13. First lead screw; 14. First sliding member; 15. First power member; 16. First movable platform; 17. Base; 18. First bracket; 181. Bearing part; 182. Support leg; 19. Protective member; 20. Collimator; 201. Mounting plate; 202. Collimation plate;

[0072] 2. Detection device; 21. Second fixed platform; 22. Second guide rail; 23. Second lead screw; 24. Second sliding member; 25. Second movable platform; 26. Second bracket; 27. Connecting seat; 28. Detection assembly; 281. Mounting arm; 282. Detector; 29. ​​Second power member; 40. Third power member; 41. Speed ​​reducer; 50. Second driving mechanism;

[0073] 3. Object under inspection; 31. Support platform;

[0074] x, first direction; y, second direction; z, height direction. DETAILED DESCRIPTION

[0075] The following detailed description and drawings of the embodiments of the present disclosure are used to illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure, that is, the present disclosure is not limited to the described embodiments.

[0076] In the description of the embodiments of the present disclosure, the term "plurality" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two).

[0077] The present disclosure adopts descriptions of directions or positional relationships indicated by “upper”, “lower”, “top”, “bottom”, “front”, “back”, “inside” and “outside”, etc., which are only for the convenience of describing the present disclosure, and do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the scope of protection of the present disclosure.

[0078] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but is within the tolerance range. "Parallel" is not strictly parallel, but is within the tolerance range. The directional words appearing in the following description are all directions shown in the figures, and are not intended to limit the specific structure of the present disclosure.

[0079] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0080] Reference to "embodiments" herein means that the particular features, structures, or characteristics described in conjunction with the embodiments may be included in at least some embodiments of the present disclosure. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0081] like Figures 1 to 7 As shown, in some embodiments, the radiographic inspection system of the present disclosure includes:

[0082] A radiation source device 1, comprising a first fixed platform 11 and a radiation source 10, wherein the first fixed platform 11 is configured to support the radiation source 10, the radiation source 10 is configured to emit a radiation beam, and the installation position and / or installation posture of the radiation source 10 relative to the first fixed platform 11 is adjustable; and

[0083] The detection device 2 comprises a second fixed platform 21 and a detection assembly 28, wherein the second fixed platform 21 is configured to support the detection assembly 28, the detection assembly 28 is configured to receive the radiation beam, and the installation position and / or installation posture of the detection assembly 28 relative to the second fixed platform 21 is adjustable;

[0084] The detection assembly 28 and the radiation source 10 are arranged opposite to each other along the first direction x, and an inspection channel for the inspected object 3 to pass through is formed between the radiation source device 1 and the detection device 2 .

[0085] Specifically, the ray beam emitted by the ray source 10 gradually spreads outward in a direction away from the ray source 10 to form a fan-shaped ray beam, that is, the cross section of the fan-shaped ray beam gradually increases in a direction away from the emission end. The ray source device 1 also includes a collimator 20 disposed at the ray emission end of the ray source 10, the collimator 20 having a strip slit that allows rays to pass through, and only rays in the ray beam emitted by the ray source 10 that are opposite to the strip slit of the collimator 20 can be emitted outward, so that the ray beam passing through the collimator 20 forms a fan shape, the fan shape is located in a vertical plane and its projection in a horizontal plane is a straight line, and the straight line extends along the first direction x.

[0086] The first fixed platform 11 can be set on the ground, including a platform plate and a plurality of legs, the plurality of legs are set at the bottom of the platform plate, and are used to support the platform plate. The ray source 10 can be directly or indirectly mounted on the first fixed platform 11 through other components. Alternatively, the first fixed platform 11 can also be a flat plate structure. The installation position of the ray source 10 relative to the first fixed platform 11 can be adjusted along the first direction x, the second direction y, the height direction z and / or other directions to change the installation position of the ray source 10 on the first fixed platform 11. Alternatively, the installation posture of the ray source 10 is adjustable to change the beam-out state of the ray beam when the installation position of the ray source 10 is fixed.

[0087] like Figure 6As shown, the detection assembly 28 may include a mounting arm 281 and a plurality of detectors 282, and the plurality of detectors 282 are arranged on the mounting arm 281 along the height direction z. The detection assembly 28 is in the shape of a strip extending along the height direction z. When the ray beam is aligned with the detector 282, that is, the projection of the fan-shaped ray beam on the plurality of detectors 282 is consistent with the length direction of the plurality of detectors 282, and when the plurality of detectors 282 are aligned with the detector in the width direction of the detector 282, the ray intensity detected by the plurality of detectors 282 is the maximum, and the detection effect is also the best accordingly. In some embodiments, the detector 282 includes a plurality of crystals arranged in an array for sensing rays.

[0088] The second fixed platform 21 may be a flat plate or a bracket structure, and the installation position of the detection assembly 28 relative to the second fixed platform 21 is adjustable along the first direction x, the second direction y, the height direction z and / or other directions to change the installation position of the detection assembly 28 on the second fixed platform 21. Alternatively, the installation posture of the detection assembly 28 is adjustable to change the alignment state with the radiation beam when the installation position of the detection assembly 28 is fixed.

[0089] During radiographic examination, Figure 1 and Figure 2 As shown, the ray source device 1 and the detection device 2 are arranged at intervals along the first direction x, and an inspection channel for the object 3 to be inspected is formed between the ray source device 1 and the detection device 2. The object 3 to be inspected moves relatively in the inspection channel, and the detector 282 is used to receive the rays emitted by the ray source 10 to image the object 3 to be inspected. The object 3 to be inspected can be a cargo or a container in a vehicle, etc. The object 3 to be inspected can be carried by a support platform 31. For example, this type of ray inspection device can be used to perform a safety inspection on the object 3 to be inspected.

[0090] In one structural form, the first fixed platform 11 and the second fixed platform 21 can be fixed on the ground, and the object 3 is supported by a support platform 31 that is movable along a second direction y, and the second direction y is perpendicular to the first direction x, so that the object 3 moves relative to the radiation source 10 and the detection assembly 28. For example, the support platform 31 can be a truck chassis, an automatic guided transport vehicle, or a trolley that can run along a guide rail. This structure makes it easier to ensure the alignment accuracy of the radiation source 10 and the detection assembly 28.

[0091] In another structural form, the first fixed platform 11 and the second fixed platform 21 can move along the second direction y. At this time, the object 3 can be in a static or moving state, and the object 3 can move relative to the radiation source 10 and the detection component 28.

[0092] In this embodiment, the ray source 10 and the detection assembly 28 are both configured as structures with adjustable installation positions and / or installation postures, and the positions of the ray source 10 and the detection assembly 28 can be conveniently adjusted according to the detection requirements, so that the range of the ray beam can adapt to different objects to be inspected 3, or better detection indicators can be obtained for different objects to be inspected 3. Therefore, this type of ray inspection system can adapt to different detection conditions and has stronger versatility.

[0093] In some embodiments, Figure 3 and Figure 4 The ray source device 1 also includes: a first movable platform 16 movably disposed above the first fixed platform 11 along a first direction x; wherein the ray source 10 is disposed on the first movable platform 16 .

[0094] Specifically, the first fixed platform 11 and the first movable platform 16 can be rectangular or other shaped platforms, the first movable platform 16 can be spaced above the first fixed platform 11 to reduce friction during movement, and the first movable platform 16 can be moved by manual force applied by an operator, or preferably, the position of the first movable platform 16 can be automatically adjusted by electric drive. The area of ​​the first movable platform 16 is usually smaller than that of the first fixed platform 11, and specifically, the dimensions of the first movable platform 16 along the first direction x and the second direction y are both smaller than those of the first fixed platform 11.

[0095] like Figure 1 As shown, there is a first distance L1 between the center of the ray source 10 (e.g., the target point of the ray source 10) and the side of the object 3 close to the ray source 10, which is called the source-object distance; there is a second distance L2 between the center of the ray source 10 and the detection surface of the detector 282, which is called the source-detection distance. When the ray source 10 moves along the first direction x to adjust its position, the first distance L1 can be changed. When the first distance L1 increases, that is, the ray source 10 is away from the object 3, the height range of the ray beam at the location of the object 3 increases, and a higher object 3 can be detected; when the first distance L1 decreases, that is, the ray source 10 is close to the object 3, the imaging quality is improved. Therefore, in the actual inspection process, the position of the first movable platform 16 can be adjusted according to needs so that the ray source 10 is in a suitable position in the first direction x.

[0096] In this embodiment, the first movable platform 16 is provided to adjust the position of the ray source 10 in the first direction x, so that the first distance L1 between the ray source 10 and the object 3 can be changed. In the actual detection process, the position of the ray source 10 can be quickly and conveniently adjusted according to the detection requirements, so that the range of the ray beam can be adapted to the height of the object 3, and better detection indicators can be obtained for different objects 3. Moreover, when replacing ray sources 10 of different types or sizes, the position of the ray source 10 along the first direction x can also be adjusted to adapt it to the inspection requirements. Therefore, this ray source device can adapt to different detection conditions and has stronger versatility.

[0097] In some embodiments, the ray source device 1 further includes: a first guiding mechanism, connected between the first fixed platform 11 and the first movable platform 16 , and configured to provide guidance for the movement of the first movable platform 16 .

[0098] This embodiment sets a guide mechanism between the first fixed platform 11 and the first movable platform 16 to prevent the first movable platform 16 from shaking during the movement along the first direction x, thereby improving the position adjustment accuracy of the radiation source 10. Even if the position of the radiation source 10 is adjusted along the first direction x, the radiation source 10 can be aligned with the detection component 28, thereby ensuring imaging accuracy and improving radiation detection accuracy.

[0099] In some embodiments, Figure 4 As shown, the first guide mechanism includes:

[0100] At least two first guide rails 12 are spaced apart along a second direction y, the first guide rails 12 extend along a first direction x, and the second direction y is perpendicular to the first direction x; and

[0101] At least two first sliding members 14 are matched with at least two first guide rails 12 in a one-to-one correspondence, and the first sliding members 14 can slide along the first guide rails 12;

[0102] The first movable platform 16 is connected to at least two first sliding members 14 .

[0103] like Figure 3 As shown, for the same first guide rail 12, at least two first sliding members 14 may be arranged at intervals along the first direction x to improve the supporting stability.

[0104] This embodiment realizes the guidance of the first movable platform 16 by the cooperation of the first sliding member 14 and the first guide rail 12. It has a simple structure, smooth sliding, is not prone to jamming, has a strong bearing capacity, can adapt to the bearing of various types of radiation sources, and can also achieve a stable bearing effect for heavy radiation sources.

[0105] In some embodiments, Figure 4As shown, the ray source device 1 further includes a first driving mechanism, and the first driving mechanism includes:

[0106] The first power member 15 is disposed on the first fixed platform 11 and is configured to provide a rotational driving force;

[0107] A first lead screw 13 extends along a first direction x and is rotatably disposed on the first fixed platform 11 around its own axis, and one end of the first lead screw 13 is connected to an output end of the first power member 15; and

[0108] The first nut is screwed onto the first lead screw 13 , and the first nut is connected to the first movable platform 16 .

[0109] The first power member 15 may be a motor or the like, and may be disposed at one end of the first fixed platform 11 along the first direction x close to the object 3. Both ends of the first lead screw 13 may be supported on the first fixed platform 11 through a mounting seat, and the first nut may be connected to the bottom of the first movable platform 16.

[0110] For example, two first guide rails 12 can be arranged at intervals along the second direction y, and the first lead screw 13 can be arranged between the two first guide rails 12 along the second direction y, and more preferably, located in the middle position of the two first guide rails 12. Therefore, the two first guide rails 12 can provide stable guidance in the area close to the two ends of the first movable platform 16 along the second direction y, and the first movable platform 16 can be driven to move through the ball screw mechanism formed by the middle first lead screw 13 and the first nut, thereby preventing the first movable platform 16 from being deflected during the movement, thereby improving the position adjustment accuracy of the radiation source 10 and preventing it from getting stuck.

[0111] In this embodiment, the first power member 15 drives the ball screw mechanism to move, thereby adjusting the position of the radiation source 10, and can realize automatic adjustment of the first distance L1 between the radiation source 10 and the object 3, with high adjustment accuracy and convenient operation. In addition, the ball screw mechanism has the advantages of high transmission accuracy, good running stability, high transmission efficiency, strong load bearing capacity, high reliability, and low malfunction.

[0112] In some embodiments, Figure 3 As shown, the ray source device 1 further includes a base 17 , which is disposed on the first movable platform 16 , and the ray source 10 is mounted on the first movable platform 16 via the base 17 .

[0113] The base 17 may also be rectangular, and the area of ​​the base 17 may be smaller than the first movable platform 16. For example, the base 17 may be fixed on the first movable platform 16; or the base 17 may be movable relative to the first movable platform 16 along the first direction x. This structure can adjust the position of the radiation source 10 along the first direction x through the first movable platform 16 and the base 17. When in use, the position of the radiation source 10 is preliminarily adjusted through the first movable platform 16, so that the first power member 15 runs at a faster speed to improve the efficiency of position adjustment. When the position of the radiation source 10 is about to be adjusted into place, the base 17 is used to move and adjust the position of the radiation source 10 at a lower speed to improve the accuracy of position adjustment.

[0114] In this embodiment, it is considered that it is difficult to ensure a high processing accuracy on the upper surface of the first movable platform 16. By providing a base 17 on the first movable platform 16, the installation accuracy of the radiation source 10 can be improved by improving the processing accuracy of the base 17. Moreover, for radiation sources 10 of different types and sizes, different installation interfaces can be provided on the base 17 to meet the installation versatility of the radiation source 10. In this case, there is no need to replace the first movable platform 16, which can improve the versatility of the first movable platform 16.

[0115] In some embodiments, the radiation source device 1 further includes a first bracket 18 , and the radiation source 10 is mounted on the base 17 via the first bracket 18 .

[0116] Since the radiation source 10 generally needs to be used in conjunction with the collimator 20, this embodiment provides a first bracket 18 to facilitate installation of both the radiation source 10 and the collimator 20 on the first bracket 18, thereby facilitating improved alignment accuracy after installation.

[0117] In some embodiments, the first bracket 18 includes:

[0118] The carrying portion 181 is configured to mount the radiation source 10; and

[0119] A plurality of supporting legs 182 are connected between the base 17 and the carrying portion 181 .

[0120] The bearing part 181 may be a plate-like structure, and a plurality of supporting legs 182 may be connected to the bottom thereof. For example, the bearing part 181 is rectangular, and each of the four corners is provided with a supporting leg 182. Optionally, the first bracket 18 may also be designed as a plate-like structure.

[0121] While meeting the installation height of the radiation source 10, this embodiment can reduce the height of the first bracket 18, or by providing a plurality of support legs 182, it is more convenient to fine-process the bottom surface of the support legs 182, so as to improve the positioning accuracy of the first bracket 18 on the base 17, thereby improving the installation accuracy of the radiation source 10.

[0122] In some embodiments, Figure 1 As shown, one end of the base 17 close to the inspection channel along the first direction x exceeds the first movable platform 16 , and at least a portion of the first bracket 1 is located on the exceeding portion of the base 17 .

[0123] For example, one end of the base 17 close to the inspection channel along the first direction x exceeds the outer edge of the first movable platform 16, and one end of the base 17 away from the inspection channel along the first direction x retracts inward relative to the first movable platform 16, which is equivalent to biasing the base 17 along the first direction x relative to the first movable platform 16 toward one side of the inspection channel.

[0124] This embodiment can, on the basis of achieving a certain adjustment distance of the radiation source 10 by moving the first movable platform 16, offset the base 17 relative to the first bracket 1 to make the radiation source 10 closer to the inspection channel, which is beneficial to achieving radiation inspection of smaller objects 3 and improving the versatility of the radiation inspection system for the volume of the objects 3.

[0125] In some embodiments, the radiation source device 1 further includes a collimator 20 , which is disposed on the first bracket 18 , and the alignment accuracy between the radiation source 10 and the collimator 20 is configured to be ensured by the processing accuracy of the first bracket 18 .

[0126] The collimator 20 has a strip slit that allows rays to pass through, and the slit extends along the height direction z. Only rays in the ray beam that are opposite to the strip slit of the collimator 20 can be emitted outward, so the ray beam passing through the collimator 20 forms a fan shape, which is located in a vertical plane and the projection in the horizontal plane is a straight line, which extends along the first direction x. When the ray source 10 and the collimator 20 are coplanar, the ray beam with the strongest energy in the center of the ray source 10 can pass through the slit of the collimator 20 to obtain a better imaging effect.

[0127] This embodiment ensures the coplanarity of the radiation source 10 and the collimator 20 by the processing accuracy of the first bracket 18. The radiation source 10 and the collimator 20 can be directly installed without adjusting the position. The structure is simple and easy to use. Even if a different radiation source 10 is replaced, the coplanarity of the radiation source 10 and the collimator 20 can be ensured.

[0128] In some embodiments, Figure 3 As shown, the radiation source device 1 further includes a collimator 20 and a protective member 19. The radiation source 10 and the collimator 20 are spaced apart along the first direction x, and the protective member 19 is disposed between the collimator 20 and the radiation source 10. The protective member 19 is configured to shield the radiation beam. The protective member 19 can also be mounted on the first bracket 18. For example, the protective member 19 can be a box-shaped structure or a plate-shaped structure.

[0129] This embodiment provides the protective member 19 to prevent the radiation beam emitted by the radiation source 10 from radiating outwards when reaching the collimator 20, thereby playing a protective role and protecting the safety of the operator.

[0130] In some embodiments, the ray source device 1 further includes a first bracket 18 , and the ray source 10 is mounted on the first bracket 18 with an adjustable pitch angle.

[0131] In this embodiment, the radiation source 10 is rotatably mounted on the first bracket 18, and the rotation axis extends along the second direction y, so that the pitch angle of the radiation source 10 can be adjusted, thereby realizing the adjustment of the installation posture of the radiation source 10. This installation method can change the position of the fan-shaped radiation beam in the vertical plane as a whole, so that the radiation beam can fully cover the top and bottom of the object to be inspected 3, and the radiation beam can be received by the detector 282 to perform radiation inspection on the entire object to be inspected 3.

[0132] Moreover, the fan-shaped beam passing through the collimator 20 has an opening angle, and the part of the beam located near the angular bisector of the opening angle is called the main beam. Since the energy of the main beam in the radiation source 10 is the highest, better imaging quality can be obtained during radiation inspection. By changing the pitch angle of the radiation source 10, different areas of the object 3 under inspection can also be inspected in detail.

[0133] In some embodiments, Figure 5 As shown, the ray source device 1 further includes a collimator 20, and the collimator 20 includes:

[0134] A mounting plate 201, which can be disposed on the first bracket 18; and

[0135] Two collimating plates 202 are arranged on the mounting plate 201, and a gap extending along the height direction z is formed between the two collimating plates 202, and the mounting position along the second direction y relative to the vertical center plane of the beam of rays can be synchronously adjusted to adjust the width of the gap, and the second direction y is perpendicular to the first direction x; for example, the collimating plate 202 can be arranged on a side of the mounting plate 201 away from the radiation source 10 to facilitate the adjustment of the width.

[0136] Based on the alignment of the radiation source 10 and the gap, this embodiment can simultaneously move the two collimation plates away from or closer to each other when adjusting the gap. In this process, the centering of the radiation source 10 and the gap can still be guaranteed, eliminating the step of adjusting the centering, making the operation simple and convenient, and ensuring the performance of the radiation inspection system.

[0137] In some embodiments, a guide pin may be provided on the base 17 , the axis of the guide pin extending along the height direction z and passing through the target point of the radiation source 10 , the first bracket 18 is positioned by the guide pin and can rotate around the axis of the guide pin to adjust the rotation angle of the radiation source 10 .

[0138] For example, the rotation angle has positive and negative adjustment angles relative to the central vertical plane, such as an adjustment range of ±5°.

[0139] In this embodiment, a first bracket 18 is provided. When the radiation source 10 rotates, the collimator 20 is also provided on the first bracket 18 and rotates synchronously with the radiation source 10 , thereby adjusting the swing angle of the fan-shaped radiation beam to adjust the alignment accuracy with the detection assembly 28 .

[0140] In some embodiments, Figure 6 and Figure 7 As shown, the detection device 2 further includes: a second movable platform 25 movably disposed above the second fixed platform 21 along the first direction x; wherein the detection assembly 28 is disposed on the second movable platform 25 .

[0141] The bottom of the detection assembly 28 is higher than the second fixed platform 21, so that the detection assembly 28 will not interfere with the second fixed platform 21 during the movement of the detection assembly 28 along the first direction x. The size of the second movable platform 25 along the first direction x is smaller than the size of the second fixed platform 21 along the first direction x, so that the space occupied by the detection device 2 in the first direction x is not increased during the position adjustment process.

[0142] This embodiment adjusts the position of the detection assembly 28 in the first direction x by setting the second movable platform 25, and can change the second distance L2 between the detection assembly 28 and the radiation source 10. In the actual detection process, the position of the detection assembly 28 in the first direction x can be quickly and conveniently adjusted according to the detection requirements, so that the detection assembly 28 can fully receive the radiation beam in the height direction z, so as to conduct a comprehensive inspection of each area in the object to be inspected 3 and obtain better imaging quality. The closer the detection assembly 28 is to the object to be inspected 3, the higher the imaging quality. Therefore, this detection device 2 can adapt to different detection conditions and has stronger versatility.

[0143] In some embodiments, the detection device 2 further includes: a second guiding mechanism, connected between the second fixed platform 21 and the second movable platform 25 , and configured to provide guidance for the movement of the second movable platform 25 .

[0144] This embodiment sets a second guide mechanism between the second fixed platform 21 and the second movable platform 25 to prevent the second movable platform 25 from shaking during the movement along the first direction x, thereby improving the position adjustment accuracy of the detection component 28. Even when the detection component 28 is adjusted, the detection component 28 can be aligned with the radiation source 10 to ensure imaging accuracy and improve radiation detection accuracy.

[0145] In some embodiments, the second guide mechanism comprises:

[0146] At least two second guide rails 22 are spaced apart along a second direction y, the second guide rails 22 extend along a first direction x, and the second direction y is perpendicular to the first direction x; and

[0147] At least two second sliding members 24 are matched with at least two second guide rails 22 in a one-to-one correspondence, and the second sliding members 24 can slide along the second guide rails 22;

[0148] The second movable platform 25 is connected to at least two second sliding members 24 .

[0149] like Figure 6 As shown, for the same second guide rail 22, at least two second sliding members 24 may be arranged at intervals along the first direction x to improve the supporting stability.

[0150] This embodiment realizes the guidance of the second movable platform 25 by the cooperation of the second sliding member 24 and the second guide rail 22. It has a simple structure, smooth sliding, strong bearing capacity, can adapt to detection components 28 with heavier weight, achieve a stable bearing effect, and can adapt to detection components 28 of different weights. Even if the number of detectors 282 is increased, it can still carry the load stably.

[0151] In some embodiments, the detection device 2 further includes a second driving mechanism, and the second driving mechanism includes:

[0152] The second power member 29 is disposed on the second fixed platform 21 and is configured to provide a rotational driving force;

[0153] A second lead screw 23 extends along the first direction x and is rotatably disposed on the second fixed platform 21 around its own axis, and one end of the second lead screw 23 is connected to the output end of the second power member 29; and

[0154] The second nut is screwed onto the second lead screw 23 , and the second nut is connected to the second movable platform 25 .

[0155] The second power member 29 may be a motor or the like, and may be disposed at one end of the second fixed platform 21 away from the object 3 along the first direction x. Both ends of the second lead screw 23 may be supported on the second fixed platform 21 through a mounting seat, and the second nut may be connected to the bottom of the second movable platform 25.

[0156] For example, two second guide rails 22 can be arranged at intervals along the second direction y, and the second lead screw 23 can be arranged between the two second guide rails 22 along the second direction y, and more preferably, located in the middle position of the two second guide rails 22. Therefore, the two second guide rails 22 can provide stable guidance in the area near the two ends of the second movable platform 25 along the second direction y, and the second movable platform 25 can be driven to move by the ball screw mechanism formed by the middle second lead screw 23 and the second nut, thereby preventing the second movable platform 25 from deflecting during the movement, improving the position adjustment accuracy of the detection assembly 28, and not prone to jamming.

[0157] Optionally, the second movable platform 25 can also be moved by manually applying a driving force.

[0158] In this embodiment, the second power member 29 drives the ball screw mechanism to move, thereby adjusting the position of the radiation source 10, and can realize automatic adjustment of the second distance L2 between the detection component 28 and the radiation source 10, with high adjustment accuracy and convenient operation. In addition, the ball screw mechanism has the advantages of high transmission accuracy, good running stability, high transmission efficiency, strong load bearing capacity, high reliability, and low malfunction.

[0159] In some embodiments, the detection device 2 further includes:

[0160] The second bracket 26 is disposed on the second movable platform 25 and is configured to carry the detection assembly 28 .

[0161] Since the height dimension of the detection assembly 28 is relatively large, this embodiment can install the detection assembly 28 at a suitable height by providing the second bracket 26, and can be connected to the detection assembly 28 at a suitable height position, thereby improving the stability of installation and position adjustment.

[0162] In some embodiments, the detection device 2 further includes:

[0163] A connecting seat 27, provided on the second bracket 26; and

[0164] The second driving mechanism 50 is configured to drive the second bracket 26 to move along a second direction y, where the second direction y is perpendicular to the first direction x.

[0165] Since the adjustment amount of the detection assembly 28 along the second direction y is small, the second drive mechanism 50 can be an electric push rod or a linear motor, etc., to simplify the structure of the second drive mechanism 50. Alternatively, a motor that outputs rotary motion can cooperate with a ball screw structure to drive the connecting seat 27 to move relative to the second bracket 26 along the second direction y. The detection assembly 28 is installed on the second fixed platform 21 through the connecting seat 27, the second bracket 26 and the second movable platform 25 in sequence.

[0166] Optionally, the connecting seat 27 can also be moved by manually applying a driving force.

[0167] In this embodiment, the detection assembly 28 is capable of adjusting its installation position along the first direction x, and the detection assembly 28 is also capable of adjusting its installation position along the second direction y. Since the second fixed platform 21 is directly installed on the ground, the positioning accuracy is low, and it is difficult to ensure high-precision alignment between the detection assembly 28 and the radiation source 10. By adjusting the position of the detection assembly 28 along the second direction y, the coplanarity of the alignment between the detection assembly 28 and the radiation source 10 can be automatically adjusted, so that the projection of the radiation beam on the detection assembly 28 is within the width range of the detector 282, which is beneficial to improving the intensity of the radiation received by the detector 282 and the detection accuracy of the radiation inspection system.

[0168] In some embodiments, the detection device 2 further includes:

[0169] A connecting seat 27, provided on the second bracket 26; and

[0170] The third driving mechanism is arranged on the connecting seat 27. The third driving mechanism has an output shaft, which extends along the first direction x. The output shaft is connected to the detection component 28 in the middle area along its own length direction. The third driving mechanism is configured to drive the detection component 28 to rotate in the vertical plane around the axis of the output shaft so that the strip-shaped detection component 28 is aligned with the beam of radiation.

[0171] For example, the connecting seat 27 can be arranged on one end of the second bracket 26 along the first direction x close to the detection component 28 to minimize the length of the output shaft of the third driving mechanism, so as to improve the connection strength with the detection component 28, make the connection between the detection component 28 and the connecting seat 27 more stable, reduce the amount of shaking during the position adjustment process, and improve the adjustment accuracy.

[0172] This embodiment, by setting a third driving mechanism, drives the detection assembly 28 to rotate through the output shaft, which is equivalent to changing the installation posture of the detection assembly 28, and can adjust the angle between the projection of the radiation beam on the detection assembly 28 and the length direction of the detection assembly 28. The angle of zero is an ideal adjustment state, so that the detection assembly 28 can be quickly and efficiently aligned with the radiation beam to ensure the position accuracy of the detection assembly 28 after alignment, which is conducive to improving the intensity of the radiation received by the detection assembly 28 and the detection accuracy of the radiation inspection system. In addition, the output shaft is connected to the middle area of ​​the detection assembly 28 along its own length direction, which can prevent the long free end of the detection assembly 28 from shaking during the rotation process, and improve the stability of the angle adjustment.

[0173] Optionally, the second driving mechanism 50 is used to adjust the deviation between the projection of the ray beam on the detection component 28 and the length direction of the detection component 28 in the second direction y, and the third driving mechanism is used to adjust the angle between the projection of the ray beam on the detection component 28 and the length direction of the detection component 28. Through the combined adjustment, the detection component and the ray beam can be quickly and efficiently aligned to ensure the accuracy of the position of the detection component 28 after alignment, which is beneficial to improve the intensity of the rays received by the detection component 28 and the detection accuracy of the X-ray inspection system.

[0174] In some embodiments, Figure 6 and Figure 7 As shown, the third driving mechanism includes:

[0175] The third power member 40 is disposed on the connecting seat 27 and is configured to provide a rotational driving force;

[0176] The reducer 41 is connected to the output end of the third power member 40 , and the reducer 41 outputs rotational motion through an output shaft.

[0177] For example, the third power component 40 can be an electric motor or the like, the reducer 41 can be a gear reducer, and the output shaft of the reducer 41 can be connected to the side of the detection component 28 away from the object to be inspected 3, so that the connecting seat 27 and the second bracket 26 are both located behind the detection component 28.

[0178] This embodiment uses the third power member 40 and the reducer 41, and the rotation speed of the third power member 40 can be reduced to a suitable rotation speed through the reducer 41, so as to accurately adjust the angle of the detection component 28 in the vertical plane, so as to minimize the angle between the projection of the radiation beam on the detection component 28 and the length direction of the detection component 28, thereby improving the detection accuracy of the X-ray inspection system.

[0179] In some embodiments, Figure 6 As shown, the detection assembly 28 includes:

[0180] Mounting arm 281; and

[0181] A plurality of detectors 282 are detachably disposed on the mounting arm 281 along the height direction z.

[0182] In this embodiment, the detector 282 is set to be detachable. When the first distance L1 between the ray source 10 and the object 3 is increased, the projection length of the ray source 10 on the detector 282 along the height direction z increases. Therefore, the number of detectors 282 can be increased in the height direction z to expand the receiving range of the received ray beam. Therefore, in actual detection, if the ray source 10 moves backward to increase the first distance L1, the second distance L2 increases accordingly, and the number of detectors 282 also increases accordingly. At this time, the detection range increases, and the height of the object 6 allowed to be inspected increases; if the ray source 10 moves forward to reduce the first distance L1, the second distance L2 decreases accordingly, and the number of detectors 282 used also decreases accordingly, and the image quality improves. Therefore, this type of ray inspection system can install a suitable number of detectors 282 according to actual detection needs, and replacement and installation are convenient to meet the needs of different working conditions.

[0183] Optionally, the mounting arm 281 is designed according to the maximum height required in actual detection, and the detectors 282 are also covered according to the maximum height. If a small number of detectors 282 are required in actual detection, only some of the detectors 282 are used to receive the radiation beam, and the other detectors 282 are in a non-receiving radiation beam state.

[0184] In some specific embodiments, Figure 1 As shown, both the ray source 10 and the detection assembly 28 can be adjusted in position along the first direction x, and a certain adjustment range can be achieved for the first distance L1 and the second distance L2. Through combined adjustment, the detection requirements of more working conditions can be met, and the coordinated adjustment of the two can reduce the adjustment requirements for a single object in the ray source 10 or the detection assembly 28, making it easier to meet the inspection requirements of the target, reducing the difficulty of adjustment, and making the operation quick and convenient, thereby improving the detection efficiency and having no effect on key detection indicators such as penetration and resolution.

[0185] The adjustment distance range of the ray source 10 and the detection assembly 28 along the first direction x can be determined according to the actual site requirements. Figure 1 In the figure, the adjustment range of the radiation source 10 along the first direction x is greater than the adjustment range of the detection assembly 28 along the first direction x. This is because the detection assembly 2 is usually provided with a wall on the side away from the object to be inspected 3, and a passage for the operator to pass through needs to be reserved between the detection assembly 28 and the wall.

[0186] Compared with the method of carrying the radiation source 10 by a movable vehicle, the structure in which the radiation source 10 is carried by the first fixed platform 11 and the detection assembly 28 is carried by the second fixed platform 21 has higher fixing accuracy, better stability and lower cost.

[0187] Specifically, Figure 1As shown, the first movable platform 16 is installed on the top of the first fixed platform 11 through the first guide mechanism, the base 17 is arranged on the top of the first movable platform 16, the first bracket 18 is arranged on the top of the base 17, the ray source 10 and the collimator 20 are installed on the first bracket 18 at intervals along the first direction x, and a protective member 19 is arranged between the ray source 10 and the collimator 20. The first power member 15 is used to drive the first lead screw 13 to rotate, and the first lead screw 13 moves the first nut matched therewith, thereby driving the first movable platform 16 to move along the first direction x, thereby adjusting the position of the ray source 10 along the first direction x.

[0188] like Figure 2 As shown, the second movable platform 25 is installed on the top of the second fixed platform 21 through a second guide mechanism, the second bracket 26 is arranged on the top of the second movable platform 25, the connecting seat 27 is arranged on the top of the second bracket 26, and the third power member 40 is arranged on the connecting seat 27, which is configured to provide a rotational driving force. The reducer 41 is connected to the output end of the third power member 40, and the reducer 41 outputs the rotational motion through the output shaft, and the output shaft is connected to the middle area along the length direction of the rear side of the mounting arm 281 in the detection assembly 28, and a plurality of detectors 282 are provided on the side of the mounting arm 281 facing the object to be inspected 3.

[0189] Although the present disclosure has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A radiographic inspection system, characterized in that: include: A radiation source device (1), comprising a first fixed platform (11) and a radiation source (10), wherein the first fixed platform (11) is configured to support the radiation source (10), the radiation source (10) is configured to emit a radiation beam, and the installation position and / or installation posture of the radiation source (10) relative to the first fixed platform (11) is adjustable; and A detection device (2), comprising a second fixed platform (21) and a detection assembly (28), wherein the second fixed platform (21) is configured to support the detection assembly (28), the detection assembly (28) is configured to receive the radiation beam, and the installation position and / or installation posture of the detection assembly (28) relative to the second fixed platform (21) is adjustable; The detection assembly (28) and the radiation source (10) are arranged relative to each other along a first direction (x), and an inspection channel for the object to be inspected (3) to pass through is formed between the radiation source device (1) and the detection device (2).

2. The radiographic inspection system according to claim 1, characterized in that: The radiation source device (1) further comprises: A first movable platform (16) is movably disposed above the first fixed platform (11) along a first direction (x); Wherein, the ray source (10) is arranged on the first movable platform (16).

3. The radiographic inspection system according to claim 2, characterized in that: The radiation source device (1) further comprises: The first guiding mechanism is connected between the first fixed platform (11) and the first movable platform (16), and is configured to provide guidance for the movement of the first movable platform (16).

4. The radiographic inspection system according to claim 3, characterized in that The first guiding mechanism comprises: at least two first guide rails (12) are arranged at intervals along a second direction (y), the first guide rails (12) extend along the first direction (x), and the second direction (y) is perpendicular to the first direction (x); and At least two first sliding members (14) are matched with at least two first guide rails (12) in a one-to-one correspondence, and the first sliding members (14) are slidable along the first guide rails (12); Wherein, the first movable platform (16) is connected to at least two of the first sliding members (14).

5. The radiographic inspection system according to claim 2, characterized in that: The ray source device (1) further comprises a first driving mechanism, wherein the first driving mechanism comprises: A first power member (15), disposed on the first fixed platform (11), configured to provide a rotational driving force; a first lead screw (13), extending along the first direction (x) and rotatably arranged around its own axis on the first fixed platform (11), one end of the first lead screw (13) being connected to an output end of the first power member (15); and A first nut is screwed onto the first lead screw (13), and the first nut is connected to the first movable platform (16).

6. The radiographic inspection system according to claim 2, characterized in that: The ray source device (1) further comprises a base (17), wherein the base (17) is arranged on the first movable platform (16), and the ray source (10) is mounted on the first movable platform (16) via the base (17).

7. The radiographic inspection system according to claim 6, characterized in that: The ray source device (1) further comprises a first bracket (18), and the ray source (10) is mounted on the base (17) via the first bracket (18).

8. The radiographic inspection system according to claim 7, characterized in that The first bracket (18) comprises: A carrying portion (181) configured to mount the radiation source (10); and A plurality of supporting legs (182) are connected between the base (17) and the bearing portion (181).

9. The radiographic inspection system according to claim 7, characterized in that: One end of the base (17) close to the inspection channel along the first direction (x) extends beyond the first movable platform (16), and at least a portion of the first bracket (1) is located on the extended portion of the base (17).

10. The radiographic inspection system according to claim 7, characterized in that: The radiation source device (1) further comprises a collimator (20), wherein the collimator (20) is arranged on the first bracket (18), and the alignment accuracy between the radiation source (10) and the collimator (20) is configured to be ensured by the processing accuracy of the first bracket (18).

11. The radiographic inspection system according to claim 7, characterized in that: A guide pin may be provided on the base (17), the axis of the guide pin extending in the height direction (z) and passing through the target point of the radiation source (10), the first bracket (18) being positioned by the guide pin and being rotatable around the axis of the guide pin to adjust the rotation angle of the radiation source (10).

12. The radiographic inspection system according to claim 7, characterized in that: The radiation source device (1) further comprises a collimator (20) and a protective member (19); the protective member (19) is arranged between the collimator (20) and the radiation source (10); the protective member (19) is configured to shield the radiation beam.

13. The radiographic inspection system according to claim 1, characterized in that: The ray source device (1) further comprises a first bracket (18), and the ray source (10) is mounted on the first bracket (18) and has an adjustable pitch angle.

14. The radiographic inspection system according to claim 1, wherein: The ray source device (1) further comprises a collimator (20), wherein the collimator (20) comprises: Mounting plate (201); and Two collimating plates (202) are arranged on the mounting plate (201), and a gap extending along a height direction (z) is formed between the two collimating plates (201), and the mounting positions along a second direction (y) relative to the vertical center plane of the ray beam can be synchronously adjusted to adjust the width of the gap, and the second direction (y) is perpendicular to the first direction (x).

15. The radiographic inspection system according to any one of claims 1 to 14, characterized in that: The detection device (2) further comprises: A second movable platform (25) is movably disposed above the second fixed platform (21) along the first direction (x); Wherein, the detection component (28) is arranged on the second movable platform (25).

16. The radiographic inspection system according to claim 15, characterized in that The detection device (2) further comprises: The second guiding mechanism is connected between the second fixed platform (21) and the second movable platform (25), and is configured to provide guidance for the movement of the second movable platform (25).

17. The radiographic inspection system according to claim 16, wherein: The second guiding mechanism comprises: at least two second guide rails (22) are arranged at intervals along a second direction (y), the second guide rails (22) extend along the first direction (x), and the second direction (y) is perpendicular to the first direction (x); and At least two second sliding members (24) are matched with at least two second guide rails (22) in a one-to-one correspondence, and the second sliding members (24) are slidable along the second guide rails (22); Wherein, the second movable platform (25) is connected to at least two of the second sliding members (24).

18. The radiographic inspection system according to claim 15, wherein: The detection device (2) further comprises a second driving mechanism, wherein the second driving mechanism comprises: A second power member (29), disposed on the second fixed platform (21), and configured to provide a rotational driving force; a second lead screw (23), extending along the first direction (x) and rotatably arranged around its own axis on the second fixed platform (21), one end of the second lead screw (23) being connected to the output end of the second power member (29); and A second nut is screwed onto the second lead screw (23), and the second nut is connected to the second movable platform (25).

19. The radiographic inspection system according to claim 15, wherein: The detection device (2) further comprises: A second bracket (26), the second bracket (26) being arranged on the second movable platform (25) and being configured to carry the detection assembly (28).

20. The radiographic inspection system according to claim 19, wherein: The detection device (2) further comprises: A connecting seat (27) provided on the second bracket (26); and The second driving mechanism (50) is configured to drive the connecting seat (27) to move along a second direction (y), wherein the second direction (y) is perpendicular to the first direction (x).

21. The radiographic inspection system according to claim 19, wherein: The detection device (2) further comprises: A connecting seat (27) provided on the second bracket (26); and A third driving mechanism is arranged on the connecting seat (27), the third driving mechanism having an output shaft, the output shaft extending along the first direction (x), the output shaft being connected to the middle region of the detection assembly (28) along its own length direction, the third driving mechanism being configured to drive the detection assembly (28) to rotate in a vertical plane around the axis of the output shaft, so that the strip-shaped detection assembly (28) is aligned with the radiation beam.

22. The radiographic inspection system according to claim 21, characterized in that The third driving mechanism comprises: A third power member (40), disposed on the connecting seat (27), configured to provide a rotational driving force; A reducer (41) is connected to an output end of the third power member (40), and the reducer (41) outputs rotational motion via the output shaft.

23. The radiographic inspection system according to any one of claims 1 to 14, characterized in that: The detection assembly (28) comprises: Mounting arm (281); and A plurality of detectors (282) are disposed on the mounting arm (281) along a height direction (z) and are detachable.

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