Radiation inspection equipment

Abstract

The invention provides radiation inspection equipment which comprises a bearing flat plate which is fixedly arranged, extends in the first horizontal direction and is used for bearing an inspected object; the movable supporting frame is movably arranged in the first direction and comprises a bottom frame body located below the bearing flat plate; the scanning system comprises a radiation device and a detection device, the radiation device is arranged on the movable supporting frame and comprises a top radiation source, the detection device comprises a bottom detector arranged on the bottom frame body, and the bottom detector is configured to receive transmission rays which are emitted by the top radiation source and penetrate through the inspected object; at least one part of the movable bearing mechanism is movably arranged in the first direction, the movable supporting frame is connected with the movable supporting frame, and at least one part of the bearing flat plate is borne on the movable bearing mechanism; and the driving device is in driving connection with the movable bearing mechanism and / or the movable supporting frame and is configured to drive at least one part of the movable bearing mechanism and the movable supporting frame to move in the first direction.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radiation inspection, in particular to a radiation inspection device. BACKGROUND

[0002] The radiation inspection device is used for inspection of bulk goods such as containers and vehicles in ports, customs and the like, and can provide high-resolution scanning images based on material composition information for the inspected objects such as containers and vehicles, so as to check out smuggled goods and various prohibited goods hidden in the goods without opening the containers.

[0003] The transmission inspection method can be used for the inspected objects, in which the radiation source and the detection device are located on opposite sides of the inspected object, the radiation emitted by the radiation source passes through the inspected object to form transmission radiation, the detection device receives the transmission radiation to form a detection signal and sends it to the imaging device, and the imaging device generates a transmission scanning image.

[0004] For the transmission inspection method, the side-view angle radiation inspection method or the top-view angle radiation inspection method can be used for transmission inspection of the inspected object.

[0005] The above statements are only used to provide background technical information related to the present application, and do not necessarily constitute the prior art. SUMMARY

[0006] The purpose of the present application is to provide a radiation inspection device, which aims to provide higher quality scanning images when inspecting the inspected object by using a top radiation source and a bottom detector.

[0007] The first aspect of the present application provides a radiation inspection device for scanning and inspecting an inspected object, characterized in that it comprises: a supporting flat plate fixedly arranged and extending along a horizontal first direction, used for carrying the inspected object; a movable support frame movably arranged along the first direction, comprising a bottom frame body located below the supporting flat plate; a scanning system comprising a radiation device and a detection device, the radiation device being arranged on the movable support frame and comprising a top radiation source, the detection device comprising a bottom detector arranged on the bottom frame body, the bottom detector facing the lower surface of the supporting flat plate and being configured to receive transmission radiation emitted by the top radiation source and passing through the inspected object; a movable carrying mechanism, at least a part of the movable carrying mechanism being movably arranged along the first direction, the movable support frame being connected to the movable carrying mechanism, and the supporting flat plate being at least partially carried on the movable carrying mechanism; and a driving device drivingly connected to the movable carrying mechanism and / or the movable support frame, configured to drive at least a part of the movable carrying mechanism and the movable support frame to move along the first direction.

[0008] In the radiation inspection apparatus of some embodiments, the mobile support frame further comprises a top frame body above the support platform and a side frame body connecting the top frame body and the bottom frame body, and the top radiation source is disposed on the top frame body.

[0009] In the radiation inspection apparatus of some embodiments, the detection device further comprises a side detector disposed on the side frame body, and the side detector is configured to receive the radiation emitted by the top radiation source and passing through the inspected object.

[0010] In the radiation inspection apparatus of some embodiments, the mobile support frame is carried by the mobile carrying mechanism.

[0011] In the radiation inspection apparatus of some embodiments, the mobile carrying mechanism comprises: a plurality of mobile carrying units extending along a horizontal second direction perpendicular to the first direction and arranged in parallel along the first direction, two ends of the mobile carrying units along the second direction are configured to movably support the mobile carrying units along the first direction, and a middle part of the mobile carrying units along the second direction is configured to movably cooperate with a lower surface of the support platform along the first direction to support the support platform; and a connecting structure connecting the plurality of mobile carrying units.

[0012] In the radiation inspection apparatus of some embodiments, the mobile support frame is connected with the connecting structure.

[0013] In the radiation inspection apparatus of some embodiments, at least one of the mobile carrying units comprises a first core rod, a first movable member and a second movable member, the first core rod extends along the second direction, the first movable member is mounted on two ends of the first core rod along the second direction, the first movable member is configured to movably support the mobile carrying unit along the first direction, and the second movable member is mounted on a middle part of the first core rod along the second direction, and the second movable member is configured to movably cooperate with the lower surface of the support platform.

[0014] In the radiation inspection apparatus of some embodiments, at least one of the first movable members comprises a first rolling body; and / or, at least one of the second movable members comprises a second rolling body.

[0015] In the radiation inspection apparatus of some embodiments, the driving device comprises a first driving mechanism drivingly connected with the mobile carrying unit to drive the mobile carrying unit to move along the first direction.

[0016] In the radiation inspection apparatus of some embodiments, the connecting structure comprises a plurality of chain plates, and at least part of the chain plates connect two adjacent mobile carrying units.

[0017] In the radiation inspection apparatus of some embodiments, the moving support frame is connected to the chain plates.

[0018] In the radiation inspection apparatus of some embodiments, the plurality of chain plates are connected as a ring chain structure perpendicular to the second direction, wherein both ends of each of the moving carrier units moving to an upper portion of the ring chain structure are movably carried in the first direction with respect to the corresponding moving carrier unit, and a middle portion in the second direction movably cooperates with the lower surface of the support plate in the first direction.

[0019] In the radiation inspection apparatus of some embodiments, the driving device includes a sprocket engaged with the plurality of chain plates, and a second driving mechanism drivingly connected with the sprocket to drive the sprocket to rotate.

[0020] In the radiation inspection apparatus of some embodiments, the driving device includes a traveling wheel installed on the moving support frame and configured to support the moving support frame, and a third driving mechanism drivingly connected with the traveling wheel to drive the traveling wheel to travel in the first direction.

[0021] In the radiation inspection apparatus of some embodiments, the radiation inspection apparatus further includes a base, wherein the support plate is fixedly arranged with respect to the base; and / or at least one of the support plate, the moving support frame, the moving carrier mechanism, and the driving device is carried on the base.

[0022] In the radiation inspection apparatus of some embodiments, the base includes a first track on which at least a portion of the moving carrier mechanism is movably arranged in the first direction; and / or the base includes a pit structure; and / or the base includes an upwardly open mounting cavity in which at least one of the moving carrier mechanism and the driving device is arranged, and the support plate is arranged above the mounting cavity; and / or both ends of the support plate in the first direction are supported on the base; and / or the support plate is detachably connected with the base; and / or the base includes a ramp arranged at at least one end of the support plate in the first direction, the ramp gradually rising from an end away from the support plate to an end close to the support plate.

[0023] Based on the radiation inspection equipment provided in this application, the bottom detector is located on the bottom frame of the movable support frame, below the support plate and the object to be inspected, facing the lower surface of the support plate and configured to receive transmitted rays emitted from the top radiation source that pass through the object to be inspected. The driving device drives the movable support mechanism and the movable support frame to move along a first direction, while the object to be inspected is placed on the support plate and remains stationary with it. The scanning system follows the movable support frame, and the bottom detector acquires the scanning information of the support plate and the object to be inspected. After receiving the scanning information, the imaging system generates an overall scan image of the support plate and the object to be inspected. Because the structure of the support plate is uniform, the support plate serves as a uniform background image for the scan image of the object to be inspected in the overall scan image, having almost no impact on the scan image of the object to be inspected. This results in higher quality scan images of the object to be inspected, and compared with related technologies, the image reading speed and accuracy are improved. Since the scanning system of the radiation inspection equipment moves while the object being inspected remains stationary, the scanning speed relative to the object can be controlled by moving the support frame, thus stabilizing the scanning speed. This facilitates control over scanning accuracy and ensures that the dimensions of each part of the scanned image along the first direction better match the object being inspected. It also reduces the phenomenon of unclear scanned images caused by vibration of the goods inside the object being inspected, and helps improve the quality of the scanned image of the object being inspected.

[0024] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of a radiation inspection device according to some embodiments of this application.

[0027] Figure 2 for Figure 1 A top view of the radiation inspection equipment of the embodiment shown.

[0028] Figures 3a to 3c for Figure 1 The diagram illustrates the structure of the radiation inspection equipment of the illustrated embodiment when the movable support frame and scanning system are in different positions during the radiation inspection of the object being inspected.

[0029] Figure 4 for Figure 1 The diagram shows the structure of the movable support frame, scanning system, and part of the movable bearing mechanism of the radiation inspection equipment in the embodiment shown.

[0030] Figure 5a FIG. 1 is a perspective view of a radiation inspection apparatus according to an embodiment of the present application. Figure 1 FIG. 2 is a left side view of the radiation inspection apparatus according to the embodiment shown in FIG. 1.

[0031] Figure 5b FIG. 3 is a left side view of an alternative embodiment of the radiation inspection apparatus according to the embodiment shown in FIG. 1. Figure 1 FIG. 4 is a perspective view of the radiation inspection apparatus according to the embodiment shown in FIG. 3.

[0032] Figure 6 FIG. 5 is a perspective view of a moving carrier unit of the radiation inspection apparatus according to the embodiment shown in FIG. 1. Figure 1 FIG. 6 is a perspective view of the moving carrier unit of the radiation inspection apparatus according to the embodiment shown in FIG. 5.

[0033] Figure 7 FIG. 7 is a perspective view of an alternative embodiment of the radiation inspection apparatus according to the embodiment shown in FIG. 1. Figure 1 FIG. 8 is a perspective view of the radiation inspection apparatus according to the embodiment shown in FIG. 7.

[0034] Figure 8 FIG. 9 is a perspective view of the radiation inspection apparatus according to the embodiment shown in FIG. 8. Figure 7 FIG. 10 is a perspective view of the radiation inspection apparatus according to the embodiment shown in FIG. 9.

[0035] Figure 9 FIG. 11 is a perspective view of the radiation inspection apparatus according to another embodiment. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The following description of at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work fall within the scope of protection of the present application.

[0037] Unless otherwise specifically indicated, the relative arrangements of parts and steps, numerical expressions, and numerical values set forth in the examples provided herein are only meant to be illustrative, and not limiting of the scope of the present application. It is to be understood that the drawings are not necessarily to scale, with emphasis generally being placed upon illustrating the principles of the present application. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but rather can be summarily described, in order not to unnecessarily obscure aspects of the present application. Any of the examples shown and discussed herein are to be construed as merely illustrative, and not limiting of the scope of the present application. Thus, other examples of the exemplary embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the following disclosure, and thus, once an item is defined in one figure, it is not necessarily discussed further in subsequent figures.

[0038] In the description of the present application, it should be understood that the use of "first", "second" and other words of similar meaning are used to distinguish the components only for the convenience of distinguishing the corresponding components, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0039] In the description of the present application, it should be understood that the orientation words such as "transverse, vertical, horizontal, left, right, front, rear" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0040] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0041] In the following description, the first direction X refers to a horizontal direction, corresponding to the length direction of the support plate 20 of the embodiment shown, i.e. the left-right direction of the embodiment shown; Figure 2 The second direction Y refers to a horizontal direction perpendicular to the first direction X, corresponding to the width direction of the support plate 20 of the embodiment shown, i.e. the up-down direction of the embodiment shown. Figure 2 Figure 2 The second direction Y refers to a horizontal direction perpendicular to the first direction X, corresponding to the width direction of the support plate 20 of the embodiment shown, i.e. the up-down direction of the embodiment shown. Figure 2

[0042] As shown in the drawings, the first direction X is a horizontal direction, corresponding to the length direction of the support plate 20 of the embodiment shown, i.e. the left-right direction of the embodiment shown; Figures 1 to 8 ​​As shown, the embodiment of the present application provides a radiation inspection device for scanning and inspecting an object O. The radiation inspection device comprises a supporting plate 20, a moving support frame 30, a scanning system 40, a moving bearing mechanism 50 and a driving device 60. The supporting plate 20 is fixedly arranged and extends along a first direction X for bearing the object O. The moving support frame 30 is movably arranged along the first direction X and comprises a bottom frame 32 under the supporting plate 20. The scanning system 40 comprises a radiation device 41 and a detecting device 42. The radiation device 41 is arranged on the moving support frame 30 and comprises a top radiation source 411. The detecting device 42 comprises a bottom detector 421 arranged on the bottom frame 32. The bottom detector 421 faces the lower surface of the supporting plate 20 and is configured to receive the transmission radiation emitted by the top radiation source 411 and passing through the object O. At least a part of the moving bearing mechanism 50 is movably arranged along the first direction X. The moving support frame 30 is connected with the moving bearing mechanism 50. The supporting plate 20 is at least partially borne on the moving bearing mechanism 50. The driving device 60 is drivingly connected with the moving bearing mechanism 50 and / or the moving support frame 30 and is configured to drive at least a part of the moving bearing mechanism 50 and the moving support frame 30 to move along the first direction X. Here, it is necessary to say that the fixed arrangement of the supporting plate 20 means that the supporting plate 20 is arranged in such a way that it keeps still when the moving bearing mechanism 50 moves, for example, a part of the supporting plate 20 can be arranged on the base 10 mentioned below. The supporting plate 20 can also be wholly borne on the moving bearing mechanism 50. In this way, the object O borne on the supporting plate 20 keeps still when the radiation inspection device works. In addition, the supporting plate 20 can be a rectangular steel plate for example. Since the supporting plate 20 is borne on the moving bearing mechanism 50, even if the object O is a heavy object such as a container truck, the supporting plate 20 can adopt a thinner steel plate without deformation, thereby effectively reducing the attenuation of the transmission radiation.

[0043] The radiation inspection device provided by the embodiments of the present application has the following advantages. The bottom detector 421 is arranged on the bottom frame 32 of the moving support frame 30, is located below the supporting plate 20 and the inspected object O carried on the supporting plate 20, faces the lower surface of the supporting plate 20 and is configured to receive the transmission rays emitted by the top ray source 411 and passing through the inspected object O. The driving device 60 drives the moving supporting mechanism 50 and the moving support frame 30 to move along the first direction X, the inspected object O is placed on the supporting plate 20 and remains stationary with the supporting plate 20, the scanning system 40 moves along with the moving support frame 30, the bottom detector 421 acquires the scanning information of the supporting plate 20 and the inspected object O, and the imaging system generates the overall scanning image of the supporting plate 20 and the inspected object O after receiving the scanning information. Since the structure of the supporting plate 20 is uniform, the scanning image of the supporting plate 20 is a uniform background image for the scanning image of the inspected object O in the overall scanning image, so that the scanning image of the inspected object O has little influence and has high quality. Compared with the related art, the reading speed and accuracy are improved. Since the scanning device 40 of the radiation inspection device moves and the inspected object O remains stationary, the moving speed of the scanning system 40 relative to the inspected object O can be controlled by controlling the moving speed of the moving support frame 30, so that the scanning speed is stable, the scanning precision is controlled, the size of each part of the scanning image along the first direction is better adapted to the inspected object O, the phenomenon of unclear scanning image caused by the vibration of the goods inside the inspected object O is reduced, and the quality of the scanning image of the inspected object O is improved.

[0044] In some embodiments, as shown in Figures 1 to 5b , Figure 7 and Figure 8 , the moving support frame 30 further includes a top frame 31 located above the supporting plate 20 and a side frame 33 connecting the top frame 31 and the bottom frame 32, and the top ray source 411 is arranged on the top frame 31. The moving support frame 30 can adopt a structure of a door frame type (such as an arch type). The top frame 31, the bottom frame 32 and the side frame 33 jointly form a scanning channel suitable for the inspected object O to pass through.

[0045] The top ray source 411 and the bottom detector 421 constitute a top-view-angle radiation inspection mode, which can provide a transmission scanning image of the inspected object O with higher quality.

[0046] In some embodiments, as shown in Figure 5a and 5b , the detection device 42 further includes a side detector 422 arranged on the side frame 33. The side detector 422 is configured to receive the rays emitted by the top ray source 411 and passing through the inspected object O.

[0047] The side detector 422 mounted on the side frame 33 can obtain more scanning information of the object to be inspected and reduce the scanning blind area.

[0048] In an embodiment not shown, the scanning system can further include radiation sources and detectors for radiographically inspecting the object O from other viewing angles or for inspecting the object O in a backscatter inspection mode, as long as the different viewing angles or different inspection modes do not interfere with each other. For example, the radiation sources of the different viewing angles or different inspection modes can be time-divisionally pulsed, or the radiation sources and detectors of the different viewing angles or different inspection modes can be arranged to be displaced along the relative movement direction of the scanning system and the object O.

[0049] In some embodiments, as shown in Figures 3a to 5b , Figure 7 and Figure 8 , the moving support frame 30 is carried on the moving carrying mechanism 50.

[0050] The moving support frame 30 is carried by the moving carrying mechanism 50, and no additional carrying structure needs to be provided for the moving support frame 30 or the additional carrying structure is reduced, which is conducive to simplifying the structure, saving costs, facilitating the synchronous movement of the moving support frame 30 and the moving carrying mechanism 50, and thus facilitating the smooth scanning of the object O by the radiographic inspection device.

[0051] In some embodiments, as shown in Figures 1 to 8 , the moving carrying mechanism 50 includes a plurality of moving carrying units 51 and a connecting structure 52. The plurality of moving carrying units 51 extend along the second direction Y and are arranged in parallel along the first direction X. The two ends of the moving carrying unit 51 along the second direction Y are configured to movably support the moving carrying unit 51 along the first direction X, and the middle part along the second direction Y is configured to movably cooperate with the lower surface of the supporting flat plate 20 along the first direction X to support the supporting flat plate 20. The connecting structure 52 connects the plurality of moving carrying units 51.

[0052] The plurality of moving carrying units 51 are arranged in parallel along the first direction X and connected by the connecting structure 52, which can uniformly support the supporting flat plate 20, reduce the deformation of the supporting flat plate 20 caused by uneven stress, and facilitate the smooth scanning of the object O by the radiographic inspection device. In addition, when the moving carrying unit 51 is damaged, only the corresponding moving carrying unit 51 needs to be repaired or replaced, which reduces the difficulty and cost of maintenance of the radiographic inspection device.

[0053] In some embodiments, as shown in Figure 4As shown, the mobile support frame 30 is connected with the connecting structure 52. For example, the side frame body 33 of the mobile support frame 30 is connected with the connecting structure 52 (chain plate 521) connecting the ends of the two spaced-apart mobile carrier units 51, while the bottom frame body 32 is arranged between the two mobile carrier units 51. In this way, when the support flat plate 20 is carried on the plurality of mobile carrier units 51, the bottom frame body 32 is located below the support flat plate 20.

[0054] The mobile support frame 30 is connected with the connecting structure 52, without or reducing the need to provide an additional carrier structure for the mobile support frame 30, which is conducive to simplifying the structure, saving costs, and can utilize the space between the two mobile carrier units 51 to arrange the bottom frame body 32 and the bottom detector 421, and is also conducive to the synchronous movement of the mobile support frame 30 and the plurality of mobile carrier units 51 of the mobile carrier mechanism 50, thereby facilitating the smooth scanning of the radiation inspection equipment on the scanned object O.

[0055] In some embodiments, as shown in FIG. 1, the at least one mobile carrier unit 51 includes a first core rod 511 extending along the second direction Y, a first movable member 512 mounted at both ends of the first core rod 511 along the second direction Y and configured to movably support the mobile carrier unit 51 along the first direction X, and a second movable member 513 mounted at the middle of the first core rod 511 along the second direction Y and configured to movably cooperate with the lower surface of the support flat plate 20. Figure 6

[0056] The mobile carrier unit 51 includes the first core rod 511 and the first movable member 512 and the second movable member 513 arranged on the first core rod 511, and the first movable member 512 and the second movable member 513 are movable relative to each other when in contact with the support flat plate 20, which is conducive to smoother movement of the mobile carrier unit 51 relative to the support flat plate 20. Both the first movable member 512 and the first core rod 511 can be driven as active members, and the driving mode is flexible.

[0057] In some embodiments, the at least one first movable member 512 includes a first sliding body; and / or, the at least one first movable member 512 includes a first rolling body; and / or, the at least one second movable member 513 includes a second sliding body; and / or, the at least one second movable member 513 includes a second rolling body.

[0058] The first movable member 512 and the second movable member 513 do not have to be sliding bodies or rolling bodies at the same time, and can be combined with each other. When the movable member is a sliding body, the contact area with the support flat plate 20 is larger, which is conducive to better supporting the support flat plate 20, and the force acting on the movable member is more uniform when the movable member moves. When the movable member is a rolling body, the contact with the support flat plate 20 is rolling friction, and the friction is smaller.

[0059] ​In some embodiments, as shown in Figure 6 The at least one first rolling body comprises a first roller 5121 rotating around the axis of the first core rod 511; and / or, the at least one second rolling body comprises a first cylinder 5131 rotating around the axis of the first core rod 511.

[0060] The first roller 5121 facilitates smooth movement of the two ends of the moving bearing unit 51, and the roller is replaceable, inexpensive, and easy to maintain. The first cylinder 5131 is in contact with the supporting plate 20 through rolling friction, facilitating smooth movement of the moving bearing unit 51 relative to the supporting plate 20, and the installation and configuration method is simple. At the same time, the cylinder and the roller are replaceable, inexpensive, and easy to maintain.

[0061] In some embodiments not shown, the at least one first sliding body comprises a sliding block; and / or, the at least one second sliding body comprises a sliding block.

[0062] In some embodiments, as shown in Figure 5b The driving device 60 comprises a first driving mechanism 61. The first driving mechanism 61 is drivingly connected with the moving bearing unit 51 to drive the moving bearing unit 51 to move in the first direction X.

[0063] The first driving mechanism 61 can linearly push the moving bearing unit 51 in the first direction X, such as linearly pushing the first core rod 511, or rotating the rolling body of the moving bearing unit 51, such as the first roller 5121, to drive the moving bearing unit 51 to move in the first direction X under the driving of the rolling body. The configuration method is flexible.

[0064] In some embodiments, the first driving mechanism 61 comprises a hydraulic cylinder linearly pushing the moving bearing unit 51 or a rotary motor rotating the moving part.

[0065] In some embodiments, as shown in Figure 4 The connecting structure 52 comprises a plurality of chain plates 521, and at least part of the chain plates 521 connect adjacent two moving bearing units 51.

[0066] The chain plate 521 is used to connect the moving bearing units 51, and the chain plate 521 synchronizes the moving speed of the connected moving bearing units 51. Moreover, the chain plate 521 and the moving bearing unit 51 can be connected through a pin shaft or a hinged manner, which is easy to replace and maintain.

[0067] In some embodiments, as shown in Figure 4 The moving support frame 30 is connected to the chain plate 521.

[0068] The mobile support frame 30 is directly mounted on the chain plate 521, which can reduce the load bearing structure for mounting the mobile support frame 30. Meanwhile, the bottom frame body 32 and the bottom detector 421 can be arranged between adjacent mobile bearing units 51, and the space between the adjacent mobile bearing units 51 can be used to arrange the bottom frame body 32 and the bottom detector 421 away from the mobile bearing units 51, so that the bottom detector 421 can be easily arranged to face the lower surface of the support flat plate 20, and the installation space of the radiation inspection equipment can be reduced.

[0069] In some embodiments, as shown in Figures 3a to 3c , Figure 7 and Figure 8 , the plurality of chain plates 521 can be connected as a ring chain structure perpendicular to the second direction Y. The two ends of each mobile bearing unit 51 moving to the upper part of the ring chain structure are movably carried along the first direction X, and the middle part along the second direction Y is movably matched with the lower surface of the support flat plate 20 along the first direction X.

[0070] By combining the mobile bearing unit 51 and the chain plate 521 into a ring chain structure, the length of the radiation inspection equipment along the first direction X can be shortened, and the floor area of the radiation inspection equipment can be reduced.

[0071] In the embodiments shown in Figures 1 to 8 , the two ends of each chain plate 521 are connected with one mobile bearing unit 51. In the embodiments not shown, two or more chain plates 521 can be connected with two mobile bearing units 51, or a plurality of chain plates 521 can be connected on both sides of the plurality of mobile bearing units 51. The plurality of chain plates 521 on both sides can have free ends, and the position of the plurality of mobile bearing units 51 and the mobile support frame 30 along the first direction X can be changed by driving the chain plates 521 to move back and forth or by controlling the number of turns of the chain plates 521 around the rotating member.

[0072] In some embodiments, as shown in Figures 3a to 3c and Figure 7 , Figure 8 , the driving device includes a sprocket 62 and a second driving mechanism 63. The sprocket 62 is engaged with the plurality of chain plates 521. The second driving mechanism 63 is drivingly connected with the sprocket 62 to drive the sprocket 62 to rotate.

[0073] The sprocket 62 and the second driving mechanism 63 are provided, and the driving mechanism 63 drives the sprocket 62 to rotate, so that the chain plate 521 rotates or moves, thereby driving the mobile bearing unit 51 to move. The cooperation between the chain plate 521 and the sprocket 62 can withstand a large tensile force and impact load, and will not slip during transmission, can maintain a stable transmission ratio, and is conducive to stable movement of the mobile support frame 30 and stable support of the object O to be inspected, thereby ensuring the quality of the scanning image.

[0074] In some embodiments, the second driving mechanism 63 comprises a rotary motor, for example.

[0075] In some embodiments, as shown in Figure 7 and Figure 8 , the radiation inspection apparatus further comprises a walking wheel 64 mounted on the moving support frame 30 and configured to support the moving support frame 30. The driving device 60 comprises a third driving mechanism 65. The third driving mechanism 65 is drivingly connected with the walking wheel 64 to drive the walking wheel 64 to walk along the first direction X.

[0076] By providing the walking wheel 64 on the moving support frame 30, the moving support frame 30 is provided with support and movement capability, so that the moving support frame 30 can push the moving bearing mechanism 50 as a driving member to move.

[0077] In some embodiments, the third driving mechanism 65 comprises a rotary motor, for example.

[0078] In some embodiments, the radiation inspection apparatus further comprises a base 10, the support flat plate 20 is fixedly provided relative to the base 10; and / or, at least one of the support flat plate 20, the moving support frame 30, the moving bearing mechanism 50 and the driving device 60 is carried on the base 10.

[0079] By providing the base 10, the installation and positioning of the support flat plate 20, the moving support frame 30, the moving bearing mechanism 50 and the driving device 60 are facilitated, the installation and debugging of the radiation inspection apparatus are facilitated, and the working stability of the radiation inspection apparatus is improved.

[0080] In some embodiments, as shown in Figures 3a to 3c , Figure 5a , 5b , Figure 7 and Figure 9 , the base 10 comprises a first track 12A. At least a part of the moving bearing mechanism 50 is movably provided on the first track 12A along the first direction X; and / or, the base 10 comprises a pit structure; and / or, the base 10 comprises an installation cavity 11 with an opening upward, at least one of the moving bearing mechanism 50 and the driving device 60 is provided in the installation cavity 11, and the support flat plate 20 is provided above the installation cavity 11; and / or, both ends of the support flat plate 20 along the first direction X are supported on the base 10; and / or, the support flat plate 20 is detachably connected with the base 10; and / or, the base 10 comprises a slope 12 provided at at least one end of the support flat plate 20 along the first direction X, the slope 12 gradually rises from the end away from the support flat plate 20 to the end close to the support flat plate 20.

[0081] The first track 12A of the base 10 enables the mobile bearing mechanism 50 to move in the first direction X without deviation. In addition, the first track 12A also facilitates preventing different parts of the mobile bearing mechanism 50 from tilting or being stuck due to uneven force.

[0082] The base 10 is configured as a pit structure, making it easy to place the object O, especially a large-volume or heavy object O, on the support platform 20.

[0083] The mounting cavity 11 and the support platform 20 can prevent the mobile bearing mechanism 50 and / or the driving device 60 from being exposed to an open environment, reducing the impact of factors such as dust and rain.

[0084] The support platform 20 is supported at both ends in the first direction X by the base 10, making the position of the support platform 20 relative to the base 10 more stable and the support capacity stronger.

[0085] The support platform 20 is detachably connected to the base 10, which on the one hand makes the relative position of the support platform 20 and the base 10 more stable, and on the other hand also facilitates moving the support platform 20 away during maintenance, reducing the difficulty of maintaining the radiation inspection equipment.

[0086] When the object O is a vehicle, the ramp 12 can facilitate the vehicle driving onto or driving off the support platform 20.

[0087] The following will be described in detail Figures 1 to 9 The structure of the radiation inspection equipment of some embodiments of the present application.

[0088] As shown in Figures 1 to 3c , the radiation inspection equipment includes a base 10, a support platform 20, a mobile support frame 30, a scanning system 40, a mobile bearing mechanism 50, and a driving device 60.

[0089] As shown in Figures 1 to 3c , Figure 5a , Figure 5b and Figure 7 , the base 10 includes a mounting cavity 11 that is open upward. The base 10 is configured as a pit structure.

[0090] The support platform 20 extends in the first direction X and is arranged on the base 10 for bearing the object O. The support platform 20 is arranged above the mounting cavity 11. The middle part of the support platform 20 is above the base 10, and both ends of the support platform 20 in the first direction X are above both ends of the base 10 in the first direction X and are detachably connected to both ends of the base 10 in the first direction X, for example, through anchor bolts. The upper surface of the support platform 20 is substantially flush with the upper surface of the base 10.

[0091] As shown in Figures 1 to 5b ,Figure 7 and Figure 9 As shown in

[0092] As shown in Figures 1 to 5b , Figure 7 and Figure 9 As shown in

[0093] As shown in Figures 1 to 5b , Figure 7 and Figure 9 As shown in

[0094] As shown in Figures 1 to 3c , Figure 5a , Figure 5b and Figure 7 As shown in

[0095] As shown in Figures 1 to 5b , Figure 7 and Figure 9 As shown in

[0096] The movable support frame 30 is detachably fixedly connected to two opposing chain plates 521 located at both ends of the second direction Y.

[0097] like Figure 6 As shown, each movable support unit 51 includes a first core rod 511, a roller 5121 serving as a first movable member 512, and a first roller 5131 serving as a second movable member 513. The first core rod 511 extends along a second direction Y. The roller 5121 is rotatably mounted at both ends of the first core rod 511 along the second direction Y and is configured to roll along the first direction X on the base 10. The first roller 5131 is rotatably mounted at the middle of the first core rod 511 along the second direction Y and is configured to rotatably engage with the lower surface of the support plate 20. The base 10 is provided with a first track 12A extending along the first direction X that engages with the roller 5121, and the roller 5121 rolls along the first track 12A.

[0098] Figure 5b In the illustrated embodiment, the drive device 60 includes a rotary motor as a first drive mechanism 61, a sprocket 62, and a rotary motor as a second drive mechanism 63. The first drive mechanism 61 is drivenly connected to the roller 5121 of the movable support unit 51 to drive the roller 5121 to roll on the first track 12A of the base 10. The sprocket 62 engages with a plurality of chain plates 521. The second drive mechanism 63 is drivenly connected to the sprocket 62 to drive the sprocket 62 to rotate, thereby the drive device 60, through the first drive mechanism 61 and the second drive mechanism 63, jointly drives the movable support frame 30 and the movable support mechanism 50 to move along the first direction X.

[0099] In embodiments not shown, the drive device 60 may also drive the movable support frame 30 and the movable bearing mechanism 50 to move along the first direction X solely through the first drive mechanism 61.

[0100] Figure 7 and Figure 8 In the illustrated embodiment, the drive device 60 includes a sprocket 62, a rotary motor serving as a second drive mechanism 63, a traveling wheel 64, and a rotary motor serving as a third drive mechanism 65. The sprocket 62 meshes with a plurality of chain plates 521. The second drive mechanism 63 is drivenly connected to the sprocket 62 to drive the sprocket 62 to rotate. The traveling wheel 64 is mounted on the movable support frame 30 and located on the base 10. A second track 12B along a first direction X is provided on the base 10, and the traveling wheel 64 moves along the second track 12B. The third drive mechanism 65 is drivenly connected to the traveling wheel 64 to drive the traveling wheel 64 to move along the first direction X on the base 10, thereby the drive device 60 drives the movable support frame 30 and the movable bearing mechanism 50 to move along the first direction X through the second drive mechanism 63 and the third drive mechanism 65.

[0101] In an embodiment not shown, the driving device 60 can also drive the mobile support frame 30 and the mobile bearing mechanism 50 to move along the first direction X by the third driving mechanism 65 alone.

[0102] Figure 9 In the shown embodiment, the base 10 is arranged on the ground and includes two slopes 12 arranged at both ends of the supporting flat plate 20 along the first direction X. When the object O is a vehicle, the object O can drive onto the supporting flat plate 20 to wait for the scanning system 40 to move along with the mobile support frame 30 to scan the object O, and after the scanning is completed, the object O can drive off the supporting flat plate 20.

[0103] In the above embodiment, when the object O is subjected to the radiation inspection, the object O is moved from outside the site to a designated position above the base 10, and the object O is supported by the supporting flat plate 20 and kept stationary. As shown, Figure 3a As shown, the radiation inspection device starts to work, and the mobile support frame 30 starts to move along the first direction X from the starting position. During the movement of the mobile support frame 30, the scanning system 40 moves along the first direction X with the mobile support frame 30. When the top X-ray source 411 moves to the starting position to be inspected of the object O, for example, the end of the vehicle compartment close to the vehicle head, the top X-ray source 411 emits X-rays, the X-rays pass through the object O to form transmission X-rays received by the bottom detector 421 and the side detector 422 to form detection signals, and during the scanning, the detection signals are transmitted to the imaging system. As shown, Figure 3b As shown, the mobile support frame 30 continues to move to the middle of the object O, and the scanning system 40 continues to scan the object O. As shown, Figure 3c As shown, the mobile support frame 30 continues to move to the end position to be inspected of the object O, for example, the end of the vehicle compartment away from the vehicle head, and the scanning system 40 completes the scanning of the object O, and the mobile support frame 30 stops moving. The imaging system generates the overall scanning image of the supporting flat plate 20 and the object O. It can be understood that the mobile support frame 30 can also move along the first direction X in the opposite direction to enable the scanning system 40 to scan the object O to obtain the overall scanning image of the supporting flat plate 20 and the object O. Since the image of the supporting flat plate 20 in the overall scanning image can be regarded as the background, the image of the object O in the overall scanning image is basically not disturbed and has good quality.

[0104] The above embodiment is only an example of the radiation inspection device of the present application, and the specific embodiments of the present application can be changed. For example, in the above embodiment, the base 10 is a whole structure, and in an embodiment not shown, the base 10 can also include a plurality of modules independent of each other, for example, in Figure 9In an alternative embodiment of the illustrated embodiment, the two ramps 12 can be provided independently of the rest of the base 10. For example, in the above embodiment, the support plate 20 is detachably fixed to the base 10, in an embodiment not illustrated, the support plate 20 can be carried only by the mobile carrying means 50, it being positioned relative to the base 10.

[0105] The above description of the various embodiments tends to emphasize differences between the various embodiments, the same or similar parts can be mutually referred to, for brevity, they will not be described again.

[0106] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones, which should be covered in the technical solution range claimed by the present application.

Claims

1. A radiation inspection apparatus for scanning inspecting an object (O), characterized by, comprises: a support flat plate (20) fixedly provided and extending along a horizontal first direction (X) for carrying the object (O) to be inspected; a movable support frame (30) movably provided along the first direction (X) and comprising a bottom frame body (32) located below the support flat plate (20); a scanning system (40) comprising a radiation device (41) and a detection device (42), the radiation device (41) being provided on the movable support frame (30) and comprising a top radiation source (411), the detection device (42) comprising a bottom detector (421) provided on the bottom frame body (32) and facing a lower surface of the support flat plate (20) and configured to receive transmission radiation emitted by the top radiation source (411) and passing through the object (O) to be inspected; a movable carrying mechanism (50), at least a part of the movable carrying mechanism (50) being movably provided along the first direction (X), the movable support frame (30) being connected with the movable carrying mechanism (50), and the support flat plate (20) being at least partially carried on the movable carrying mechanism (50); and a driving device (60) drivingly connected with the movable carrying mechanism (50) and / or the movable support frame (30) and configured to drive at least a part of the movable carrying mechanism (50) and the movable support frame (30) to move along the first direction (X).

2. The radiation inspection apparatus according to claim 1, wherein: the movable support frame (30) further comprises a top frame body (31) located above the support flat plate (20) and a side frame body (33) connecting the top frame body (31) and the bottom frame body (32), and the top radiation source (411) is provided on the top frame body (31). the detection device (42) further comprises a side detector (422) provided on the side frame body (33) and configured to receive radiation emitted by the top radiation source (411) and passing through the object (O) to be inspected.

3. The radiographic inspection apparatus of claim 2, wherein, the movable support frame (30) is carried on the movable carrying mechanism (50).

4. The radiographic inspection apparatus of claim 1, wherein, the movable carrying mechanism (50) comprises:

5. The radiographic inspection apparatus of claim 1, wherein, a plurality of movable carrying units (51) extending along a horizontal second direction (Y) perpendicular to the first direction (X) and arranged in parallel along the first direction (X), both ends of each movable carrying unit (51) along the second direction (Y) being configured to movably support the movable carrying unit (51) along the first direction (X), and a middle part of each movable carrying unit (51) along the second direction (Y) being configured to movably cooperate with a lower surface of the support flat plate (20) along the first direction (X) to support the support flat plate (20); and a connecting structure (52) connecting the plurality of movable carrying units (51). the movable support frame (30) is connected with the connecting structure (52).

6. The radiographic inspection apparatus of claim 5, wherein, 7. The radiation inspection apparatus according to claim 5, wherein: ​ At least one of the mobile bearing units (51) comprises a first core rod (511) extending along the second direction (Y), a first movable member (512) and a second movable member (513); The first movable member (512) is mounted on both ends of the first core rod (511) along the second direction (Y) and is configured to movably support the mobile bearing unit (51) along the first direction (X); The second movable member (513) is mounted on the middle of the first core rod (511) along the second direction (Y) and is configured to movably cooperate with the lower surface of the supporting flat plate (20).

8. The radiation inspection apparatus according to claim 7, wherein At least one of the first movable members (512) comprises a first rolling body; and / or At least one of the second movable members (513) comprises a second rolling body.

9. The radiographic inspection apparatus of claim 5, wherein, The drive device (60) comprises a first drive mechanism (61) drivingly connected with the mobile bearing unit (51) to drive the mobile bearing unit (51) to move along the first direction (X).

10. The radiographic inspection apparatus of claim 5, wherein, The connecting structure (52) comprises a plurality of chain plates (521), at least part of the chain plates (521) connecting two adjacent mobile bearing units (51).

11. The radiographic inspection apparatus of claim 10, wherein, The mobile support frame (30) is connected to the chain plates (521).

12. The radiographic inspection apparatus of claim 10, wherein, The plurality of chain plates (521) are connected as a ring chain structure perpendicular to the second direction (Y), wherein the both ends of each mobile bearing unit (51) moving to the upper part of the ring chain structure movably bear the corresponding mobile bearing unit (51) along the first direction (X) and the middle part movably cooperates with the lower surface of the supporting flat plate (20) along the first direction (X).

13. The radiographic inspection apparatus of claim 10, wherein, The drive device (60) comprises: a sprocket (62) meshing with the plurality of chain plates (521); and a second drive mechanism (63) drivingly connected with the sprocket (62) to drive the sprocket (62) to rotate.

14. The radiographic inspection apparatus of claim 1, wherein, The drive device (60) comprises: a traveling wheel (64) mounted on the mobile support frame (30) and configured to support the mobile support frame (30); and a third drive mechanism (65) drivingly connected with the traveling wheel (64) to drive the traveling wheel (64) to travel along the first direction (X).

15. The radiographic inspection apparatus of any one of claims 1 to 14, wherein, Further comprising a base (10), wherein The supporting flat plate (20) is fixedly arranged relative to the base (10); and / or At least one of the supporting flat plate (20), the mobile support frame (30), the mobile bearing mechanism (50) and the drive device (60) is carried on the base (10).

16. The radiation inspection apparatus according to claim 15, wherein The base (10) includes a first track (12A) on which at least a part of the moving carrier mechanism (50) is movably disposed in the first direction (X); and / or The base (10) includes a pit structure; and / or The base (10) includes an upwardly open mounting cavity (11) in which at least one of the moving carrier mechanism (50) and the driving device (60) is disposed, and the support flat plate (20) is disposed above the mounting cavity (11); and / or Both ends of the support flat plate (20) in the first direction (X) are supported on the base (10); and / or The support flat plate (20) is detachably connected with the base (10); and / or The base (10) includes a slope (12) disposed on at least one end of the support flat plate (20) in the first direction (X), which gradually rises from an end away from the support flat plate (20) to an end close to the support flat plate (20).

Images