Radiation scanning inspection equipment

Abstract

The invention provides radiation scanning inspection equipment, and the equipment comprises a substrate which is configured to form a channel for a detected object to pass through when the radiation scanning inspection equipment carries out the scanning inspection of the detected object; the transmission scanning device comprises a ray source for emitting rays and a detector for detecting the rays emitted by the ray source; the transmission scanning device is mounted on the arm frame, the arm frame is rotatably arranged relative to the base body, so that the transmission scanning device has at least two scanning working positions through rotation of the arm frame relative to the base body, and the heights of the beam outlet positions of the radiation source are different at different scanning working positions. When the radiation scanning inspection equipment provided by the invention inspects the inspected object, the chassis information and the cargo information in the imaging information are not overlapped, so that the imaging quality is improved, and the inspection accuracy is finally improved.

Description

Technical Field

[0001] The present application relates to the field of radiation inspection technology, and in particular to a radiation scanning inspection device. Background Art

[0002] Radiation scanning inspection equipment used for cargo / vehicle radiation inspection is designed to meet the needs of non-stop rapid inspection of bulk cargo transportation in ports, customs, etc. It can provide high-resolution scanning images based on material composition information. Inspectors can effectively and quickly check smuggled goods and various contraband hidden in the goods without stopping or unpacking.

[0003] In the related art, the beam-emitting position height of the ray emitting source of the radiation scanning inspection equipment is generally lower than the upper surface of the vehicle chassis of the scanned goods, and the beam-emitting position height cannot be changed. The rays are emitted from the target point and illuminated to the vehicle and the goods. For the goods on the upper part of the vehicle far away from the vehicle chassis, the ray penetration imaging does not contain chassis information; for the goods close to the vehicle chassis, the rays first pass through the chassis and then pass through the goods to form an image. The ray penetration imaging information is the overlapping information of the chassis and the goods. Due to the complexity of the chassis, the overlapping imaging information is difficult to distinguish. For scenarios where separate imaging of goods is required, the radiation scanning inspection equipment of the related art cannot meet the needs.

[0004] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art. Summary of the invention

[0005] The purpose of the present application is to provide a radiation scanning inspection device, aiming to solve the problem of overlap between chassis information and cargo information in imaging information when the radiation scanning inspection device of the related art inspects the object to be inspected.

[0006] The present application provides a radiation scanning inspection device, comprising:

[0007] A substrate, configured to form a channel for the object to be inspected to pass through when the radiation scanning inspection device performs scanning inspection on the object to be inspected;

[0008] a transmission scanning device, comprising a radiation source for emitting radiation and a detector for detecting radiation emitted by the radiation source; and

[0009] An arm, the transmission scanning device is installed on the arm, and the arm is rotatably arranged relative to the base, so that the transmission scanning device has at least two scanning working positions through the rotation of the arm relative to the base, wherein the height of the beam-emitting position of the ray source is different at different scanning working positions.

[0010] In the radiation scanning inspection equipment of some embodiments, the position of the detector relative to the radiation source is the same at different scanning working positions.

[0011] In the radiation scanning inspection equipment of some embodiments, the radiation source and the detector are fixed on the arm.

[0012] In some embodiments of the radiation scanning inspection device, the radiation scanning inspection device includes an arm rotation hinge, and the arm is hinged to the base through the arm rotation hinge.

[0013] In some embodiments of the radiation scanning inspection equipment, the arm support rotation hinge is variably disposed relative to the base.

[0014] In the radiation scanning inspection device of some embodiments, the arm is configured to rotate around a horizontal axis.

[0015] In the radiation scanning inspection equipment of some embodiments, the base includes an arm structure outer cover, and the arm is rotatably located in the inner space of the arm structure outer cover.

[0016] In some embodiments of the radiation scanning inspection device, the radiation scanning inspection device further includes a cabin, and the radiation source is located in an internal space of the cabin.

[0017] In the radiation scanning inspection device of some embodiments, the arm comprises:

[0018] a first arm, the ray source being arranged on the first arm;

[0019] a second arm, the second arm being spaced apart from the first arm and disposed on both sides of the channel, the bottom end of the second arm being hinged to the base; and

[0020] The third arm is connected to the top of the first arm and the second arm, and the detector is arranged on the second arm and / or the third arm.

[0021] In some embodiments of the radiation scanning inspection device,

[0022] The radiation scanning inspection device also includes a cabin, and the radiation source is located in the internal space of the cabin;

[0023] The base comprises an arm structure outer cover, the arm is rotatably located in the inner space of the arm structure outer cover, the arm structure outer cover is connected to the cabin, and the inner space of the cabin is communicated with the inner space of the arm structure outer cover.

[0024] In the radiation scanning inspection equipment of some embodiments, the arm structure housing includes:

[0025] a first cover body, wherein the lower end of the first cover body is connected to the cabin body, and the first arm is located in the first cover body;

[0026] A second cover body is disposed at both sides of the channel at a distance from the first cover body, the second arm is located in the second cover body, and the bottom of the second arm is hinged to the bottom of the second cover body; and

[0027] A third cover body is connected to the top of the first cover body and the second cover body, and the third arm is located in the third cover body.

[0028] In some embodiments of the radiation scanning inspection device, the radiation scanning inspection device further includes a driving device, which is drivingly connected to the arm and configured to drive the arm to rotate relative to the base.

[0029] In the radiation scanning inspection device of some embodiments, the radiation scanning inspection device further includes:

[0030] A vehicle chassis height acquisition device, used to acquire height information of the vehicle chassis in the object to be inspected; and

[0031] The control device is connected to the vehicle chassis height acquisition device by signal, and is configured to control the height of the beam output position according to the height information acquired by the vehicle chassis height acquisition device.

[0032] Based on the radiation scanning inspection equipment provided by the present application, since the transmission scanning device is installed on the arm, and the arm is rotatably arranged relative to the base, the transmission scanning device can have at least two scanning working positions by rotating the arm relative to the base, wherein the height of the beam-out position of the radiation source is different at different scanning working positions, so that when inspecting the object to be inspected, different scanning working positions can be selected according to the height of the chassis, so that the scanning working position is better matched with the height of the chassis, so that when the radiation scanning inspection equipment inspects the object to be inspected, there is no overlap between the chassis information and the cargo information in the imaging information, thereby improving the imaging quality and ultimately improving the accuracy of the inspection.

[0033] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0035] Figure 1This is a schematic diagram of the main structure of the radiation scanning inspection device according to an embodiment of the present application, wherein the target point of the radiation source is in a first scanning working position.

[0036] Figure 2 for Figure 1 The schematic diagram of the top view of the radiation scanning inspection equipment is shown.

[0037] Figure 3 for Figure 1 The front view structural diagram of the radiation scanning inspection device is shown, wherein the target point of the radiation source is located at a second scanning working position higher than the first scanning working position.

[0038] Figure 4 for Figure 1 A schematic diagram of the main structure of the radiation scanning inspection device is shown, which shows the state in which the cargo imaging and chassis imaging information overlap when the target point of the radiation source is in the first scanning working position.

[0039] Figure 5 for Figure 1 A schematic diagram of the main structure of the radiation scanning inspection device, which shows a state in which there is no overlap between the cargo imaging and the chassis imaging information when the target point of the radiation source is at a second scanning working position higher than the first scanning working position.

[0040] Figure 6 for Figure 1 A control block diagram of the drive device of the arm of the radiation scanning inspection equipment.

[0041] Figures 1 to 6 In the figure, each reference numeral represents:

[0042] 1. Cabin;

[0043] 2. Arm structure cover;

[0044] 21. a first cover body;

[0045] 22. a second cover body;

[0046] 23. The third cover body;

[0047] 3. Boom;

[0048] 31. First arm;

[0049] 32. Second arm;

[0050] 33. Third arm;

[0051] 4. Radiation source installation components;

[0052] 5. Boom rotating hinge seat;

[0053] 6. Transmission scanning device;

[0054] 61. Radiation source;

[0055] 611, beam exit position;

[0056] 62. Detector;

[0057] 7. Vehicle chassis;

[0058] 71. Upper surface of vehicle chassis;

[0059] 8. Goods;

[0060] 9. Vehicle chassis height acquisition device;

[0061] 10. Driving device;

[0062] 11. Control device;

[0063] P. Channel. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0066] In the description of the present application, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present application.

[0067] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0068] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0069] like Figures 1 to 6 As shown, an embodiment of the present application provides a radiation scanning inspection device. The radiation scanning inspection device includes a base, a transmission scanning device 6 and an arm 3.

[0070] The substrate is configured to form a passage P for the object to be inspected to pass through when the radiation scanning inspection device performs scanning inspection on the object to be inspected. The substrate may be, for example, a base, a cover, or a chassis of a scanning vehicle carrying the transmission scanning device 6 and the arm 3. In some embodiments, the base may be formed as follows: Figure 1 A door-type passage P as shown.

[0071] The transmission scanning device 6 includes a radiation source 61 for emitting radiation and a detector 62 for detecting the radiation emitted by the radiation source 61. The radiation source 61 is, for example, an X-ray source, and the X-ray source is, for example, an accelerator or an X-ray machine, etc. The detector 62 can be any type of detector for receiving the radiation emitted by the radiation source 61, such as a semiconductor detector, a scintillation counter, etc.

[0072] The transmission scanning device 6 is mounted on the arm 3, and more specifically, the ray source 61 and the detector 62 of the transmission scanning device 6 are both mounted on the arm 3. The arm 3 is rotatably arranged relative to the base, so that the transmission scanning device 6 has at least two scanning working positions by rotating the arm 3 relative to the base, wherein the height of the beam-out position 611 of the ray source 61 is different at different scanning working positions.

[0073] When the ray source 61 is an accelerator, the beam exit position 611 corresponds to the target position of the accelerator.

[0074] The number of scanning working positions can be only two, or can be set to more according to the type of the object to be inspected. Figures 1 to 5 In the embodiment shown, there is provided Figure 1 and Figure 4 The first scanning working position shown and Figure 3 and Figure 5 The second scanning working position is shown.

[0075] In the radiation scanning inspection equipment of the embodiment of the present application, since the transmission scanning device 6 is installed on the arm 3, and the arm 3 is rotatably arranged relative to the base, the transmission scanning device 6 can have at least two scanning working positions by rotating the arm 3 relative to the base, wherein the height of the beam-out position 611 of the radiation source 61 (for example, the height relative to the ground) is different at different scanning working positions, so that when inspecting the object to be inspected, different scanning working positions can be selected according to the height of the chassis carrying the object to be inspected, so that the scanning working position is better matched with the height of the chassis, so that when the radiation scanning inspection equipment inspects the object to be inspected, there is no overlap between the chassis information and the cargo information in the imaging information, thereby improving the imaging quality and ultimately improving the accuracy of the inspection.

[0076] like Figures 1 to 5 As shown, in some embodiments of the radiation scanning inspection equipment, the position and posture of the detector 62 relative to the radiation source 61 is the same at different scanning working positions.

[0077] For example, at different scanning working positions, the relative positions of the detector 62 and the radiation source 61 are fixed, so that the scanning inspection result is stable.

[0078] To achieve the same posture of the detector 62 relative to the radiation source 61 at different scanning working positions, such as Figures 1 to 5 In the illustrated embodiment, the detector 62 and the ray source 61 may be relatively fixed. In an embodiment not shown, the detector 62 and the ray source 61 may also move separately but synchronously, or may follow each other, that is, arrive at the designated position one after another.

[0079] like Figures 1 to 5 As shown, in some embodiments of the radiation scanning inspection equipment, the radiation source 61 and the detector 62 are fixed on the arm 3 and move with the rotation of the arm 3.

[0080] like Figures 1 to 5 As shown, in some embodiments of the radiation scanning inspection equipment, the radiation scanning inspection equipment includes an arm rotating hinge 5, and the arm 3 is hinged to the base through the arm rotating hinge 5. The arm rotating hinge 5 is provided to facilitate the stable rotation of the arm 3 relative to the base, so that the target scanning working position is relatively stable.

[0081] In the radiation scanning inspection equipment of some embodiments, the arm support rotation hinge 5 is variably arranged relative to the base.

[0082] The arm support rotating hinge seat 5 is variably arranged relative to the base, so that the arm support 3 can have a larger rotation space when the space is limited, thereby facilitating the adjustment of the scanning working position of the transmission scanning device 6. For example, the arm support rotating hinge seat 5 can be arranged to be translatably arranged relative to the base in a horizontal plane along a direction perpendicular to the extension direction of the channel, and the implementation method is, for example, to connect the arm support rotating hinge seat 5 and the base through a slide rail and a slider.

[0083] like Figures 1 to 5 As shown, in some embodiments of the radiation scanning inspection equipment, the arm 3 is configured to rotate around a horizontal axis.

[0084] The arm 3 rotates around the horizontal axis, which is conducive to changing the scanning working position through simple movement, and the structure and operation are simple.

[0085] like Figures 1 to 5 As shown, in some embodiments of the radiation scanning inspection equipment, the base includes an arm structure outer cover 2, and the arm 3 is rotatably located in the inner space of the arm structure outer cover 2.

[0086] Providing the arm structure cover 2 is beneficial to protecting the arm 3, the transmission scanning device 6 installed thereon, and related components such as the radiation source installation assembly 4, the shielding mechanism, and electrical components.

[0087] like Figures 1 to 5 As shown, in some embodiments of the radiation scanning inspection equipment, the radiation scanning inspection equipment further includes a cabin 1 , and the radiation source 61 is located in the inner space of the cabin 1 .

[0088] The cabin 1 can be provided to protect the radiation source 61 and its related components such as the radiation source mounting assembly 4, the shielding mechanism and the electrical components.

[0089] like Figures 1 to 5 As shown, in some embodiments of the radiation scanning inspection equipment, the arm structure cover 2 is connected to the cabin 1, and the internal space of the cabin 1 is communicated with the internal space of the arm structure cover 2.

[0090] like Figures 1 to 5 As shown, in some embodiments of the radiation scanning inspection equipment, the arm 3 includes a first arm 31, a second arm 32 and a third arm 33. The ray source 61 is arranged on the first arm 31. The second arm 32 is arranged on both sides of the channel P at intervals from the first arm 31. The bottom end of the second arm 32 is hinged to the base. The third arm 33 is connected to the top of the first arm 31 and the second arm 32. The detector 62 is arranged on the second arm 32 and / or the third arm 33.

[0091] The first arm 31 and the second arm 32 are arranged in parallel and spaced apart, and the third arm 33 is arranged perpendicular to the first arm 31 and the second arm 32. Figure 1 and Figure 4In the illustrated embodiment, the first arm 31 and the second arm 32 are vertical arms in the first scanning working position, and the third arm 33 is a horizontal arm. The first arm 31, the second arm 32 and the third arm 33 form a door-shaped frame structure.

[0092] In some embodiments of the radiation scanning inspection equipment, the space between the first arm 31 and the second arm 32 is suitable for accommodating the passage of the object to be inspected, and the radiation source 61 and the detector 62 are located on different arms, so that the radiation scanning inspection equipment of the embodiments of the present application is particularly suitable for the inspection requirements of the perspective transmission scanning device.

[0093] like Figures 1 to 5 As shown, in some embodiments of the radiation scanning inspection equipment, the arm structure outer cover 2 includes a first cover body 21, a second cover body 22 and a third cover body 23. The lower end of the first cover body 21 is connected to the cabin body 1, and the first arm 31 is located in the first cover body 21. For example, the internal space of the cabin body 1 is connected to the internal space of the first cover body 21, and the first arm 31 passes through the connection between them and is connected to the radiation source 61 located in the internal space of the cabin body 1, more specifically, the radiation source mounting assembly 4. The second cover body 22 is arranged on both sides of the channel P at intervals from the first cover body 21, and the second arm 32 is located in the second cover body 22, and the bottom of the second arm 32 is hinged to the bottom of the second cover body 22. The third cover body 23 is connected to the top of the first cover body 21 and the second cover body 22, and the third arm 33 is located in the third cover body 23.

[0094] The first cover body 21 and the second cover body 22 are arranged in parallel and spaced apart, and the third cover body 23 is arranged perpendicular to the first cover body 21 and the second cover body 22. Figure 1 and Figure 4 In the illustrated embodiment, the first cover 21 and the second cover 22 are vertically arranged covers in the first scanning working position, and the third cover 23 is a horizontally arranged cover. The first cover 21, the second cover 22, the third cover 23 and the cabin 1 form a door-shaped cover structure. The passage P is located in the interval between the first cover 21 and the second cover 22. The door-shaped cover structure is adapted to the door-shaped frame structure of the arm 3, so that the door-shaped frame structure can be protected by the door-shaped cover structure and can be rotated in the door-shaped cover structure to change the scanning working position.

[0095] like Figure 6 As shown, in some embodiments of the radiation scanning inspection device, the radiation scanning inspection device further includes a driving device 10, which is drivingly connected to the arm frame 3 and configured to drive the arm frame 3 to rotate relative to the base. In some embodiments of the radiation scanning inspection device, the driving device 10 is drivingly connected to the radiation source installation assembly 4 and configured to drive the radiation source installation assembly 4 and drive the arm frame 3 to rotate relative to the base.

[0096] For example, the driving device 10 may include a driving cylinder. The driving cylinder is, for example, an oil cylinder or a gas cylinder. The two ends of the driving cylinder are respectively hinged to the arm frame 3 and the base body, and the arm frame 3 can be driven to rotate relative to the base body by the extension and retraction of the driving cylinder, thereby changing the scanning working position of the transmission scanning device 6. When the driving device 10 includes a driving cylinder, it is particularly suitable for the case of having two scanning working positions. For example, the two extreme motion positions of the piston of the driving cylinder can be made to correspond to the two scanning working positions respectively, in which case the control steps can be simplified. Of course, the driving cylinder can also be made to drive the arm frame 3 to rotate to obtain more than two scanning working positions of the transmission scanning device 6 by controlling whether there is fluid entering and flowing out of the driving cylinder and the flow rate of the fluid entering and flowing out.

[0097] For another example, the driving device 10 may include a motor connected to the arm 3 to drive the arm 3 to rotate. The motor is, for example, a stepping motor. When the driving device 10 includes a motor, it is convenient to control the transmission scanning device 6 to have two or more scanning working positions, such as controlling the arm 3 to stop at any position of the two extreme positions when rotating, thereby obtaining multiple scanning working positions.

[0098] like Figure 6 As shown, in some embodiments of the radiation scanning inspection device, the radiation scanning inspection device further includes a vehicle chassis height acquisition device 9 and a control device 11. The vehicle chassis height acquisition device 9 is used to acquire the height information of the vehicle chassis in the object to be inspected. The control device 11 is connected to the vehicle chassis height acquisition device 9 by signal, and is configured to control the height of the beam output position 611 according to the height information acquired by the vehicle chassis height acquisition device 9.

[0099] For example, the control device 11 is signal-connected with the vehicle chassis height acquisition device 9 and the driving device 10 , and is configured to control the action of the driving device 10 according to the height information acquired by the vehicle chassis height acquisition device 9 , so as to control the height of the beam output position 611 .

[0100] The vehicle chassis height acquisition device 9 can be a vehicle chassis height measuring device, for example, it can be a camera, a camera, etc., or it can be other devices that indirectly acquire the vehicle chassis height. For example, it can scan the license plate and obtain the vehicle chassis height information based on the information corresponding to the license plate.

[0101] The control device 11 can be implemented as a general processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any appropriate combination thereof for performing the functions described in this application.

[0102] By providing the vehicle chassis height acquisition device 9 and the control device 11, the action of the driving device 10 can be controlled according to the height information of the vehicle chassis in the inspected object, thereby automatically adjusting the rotation angle of the arm 3, so that the transmission scanning device 6 is adjusted to a scanning working position adapted to the vehicle chassis height of the inspected object, so as to prevent the chassis information and the cargo information from overlapping in the imaging information when the radiation scanning inspection equipment inspects the inspected object.

[0103] The following combination Figures 1 to 6 The radiation scanning inspection device of the embodiment of the present application is further described.

[0104] The radiation scanning inspection equipment includes a cabin 1, an arm structure cover 2, an arm 3, a radiation source mounting assembly 4, an arm rotation hinge 5, a transmission scanning device 6, a vehicle chassis height acquisition device 9, a driving device 10 and a control device 11.

[0105] The boom rotating hinge seat 5 is installed at a lower position inside the boom structure outer cover 2 and is fixedly connected to the boom structure outer cover 2 .

[0106] The radiation source installation assembly 4 is composed of a frame, and the frame has built-in equipment such as an accelerator as a radiation source 61. The bottom of the frame has a mounting interface connected to the cabin 1. The top of the frame has a mounting interface connected to the arm 3.

[0107] One end of the arm 3 is hinged to the arm rotation hinge 5, and the arm 3 can rotate around a horizontal axis parallel to the channel P through the arm rotation hinge 5. The other end of the arm 3 is connected to the radiation source installation assembly 4. After the connection between the radiation source installation assembly 4 and the cabin 1 is released, under the power drive of the driving device 10, the radiation source installation assembly 4 and the arm 3 can rotate around the arm rotation hinge 5 together, and the target position and height of the accelerator are adjusted accordingly.

[0108] During the installation and commissioning of the radiation scanning inspection equipment, the arm 3 is rigidly connected to the radiation source mounting assembly 4, and the relative positions of the radiation source 61 and the detector 62 of the transmission scanning device 6 remain unchanged. When the scanning working position changes, the beam plane of the radiation source 61 of the transmission scanning device 6 and the detection surface of the detector 62 remain coplanar without the need for secondary adjustment.

[0109] like Figures 1 to 5 As shown, in this embodiment, the arm structure outer cover 2 includes a first cover body 21, a second cover body 22 and a third cover body 23. The first cover body 21 and the cabin body 1, the second cover body 22 and the third cover body 23 connected below the first cover body 21 form a door-shaped cover structure.

[0110] The arm support 3 comprises a first arm 31, a second arm 32 and a third arm 33. The first arm 31, the second arm 32 and the third arm 33 form a door-shaped frame structure. The door-shaped frame structure is located in the inner space of the door-shaped cover structure.

[0111] The transmission scanning device 6 includes a ray source 61 and a detector 62. The ray source 61 is installed below the first arm 31 through the ray source installation assembly 4. The detector 62 is installed on a side of the second arm 32 facing the ray source 61.

[0112] In an embodiment not shown in the figures, the detector 62 may also be installed on a side of the third arm 33 facing the radiation source 61 .

[0113] In this embodiment, the ray source 61 is an accelerator that emits an X-ray beam. The beam exit position 611 of the ray source 61 corresponds to the target position of the accelerator.

[0114] The auxiliary electrical equipment is arranged and installed in the cabin 1, part of the power distribution and control lines are placed in the arm 3, and the detector 62, sensors for detecting parameters of the radiation scanning inspection equipment or the object to be inspected, etc. are electrically interconnected with the equipment in the cabin 1.

[0115] The bottom of the second arm 32 of the arm frame 3 is hinged to the bottom of the second cover body 22 through the arm frame rotating hinge seat 5.

[0116] The driving device 10 is connected to the arm 3. In this embodiment, the driving device 10 is a cylinder, and the two ends of the cylinder are respectively hinged to the second arm 32 and the second cover 22. In this embodiment, the transmission scanning device 6 has two scanning working positions, namely Figure 1 and Figure 4 The first scanning working position shown and Figure 3 and Figure 5 The first scanning working position and the second scanning working position correspond to the two extreme movement positions of the piston of the oil cylinder respectively.

[0117] In the radiation scanning inspection equipment, the first cover body 21 of the arm structure cover 2 is installed on the top of the cabin 1, and the bottoms of the cabin 1 and the second cover body 22 of the arm structure cover 2 are connected to the ground. A connection is provided on the top of the cabin 1, which is used to connect the internal space of the arm structure cover 2 (specifically the first cover body 21) and the internal space of the cabin 1. The lower end of the first arm 31 of the arm 3 extends into the internal space of the cabin 1 through the connection. The radiation source 61 is fixedly connected to the lower end of the first arm 31 through the radiation source mounting assembly 4. The radiation source 61 and the radiation source mounting assembly 4 are located in the internal space of the cabin 1 and move following the movement of the arm 3.

[0118] In the following, the radiation scanning inspection device of the present application is further explained by taking the vehicle and the cargo 8 carried by the vehicle as an example.

[0119] like Figure 4 As shown, at the first scanning working position of the transmission scanning device 6, that is, when the target position of the accelerator is at the first height (low position), it is a mode of scanning the vehicle and the cargo 8 in the maximum range, and the beam exit angle is angle α. Within the angle range of γ, the vehicle and the cargo 8 as the objects to be inspected are taken as a whole to achieve maximum range imaging, but within the angle range of β, the imaging information of the vehicle chassis 7 overlaps with the imaging information of the cargo 8.

[0120] like Figure 5 As shown, when the arm 3 rotates to drive the transmission scanning device 6 to be in the second scanning working position, the target position of the accelerator is at a second height (high position) higher than the first height. At this time, the beam exit angle is angle α, and the lower edge of the beam in the angle range of β basically coincides with the upper surface 71 of the vehicle chassis. Therefore, within the same angle range of γ (included in the angle range of β), the cargo 8 can be imaged separately, and the vehicle chassis 7 is imaged outside the angle of γ, so that the chassis imaging information and the cargo imaging information do not overlap.

[0121] According to the above description, the scanning working position of the radiation scanning and inspection equipment in the embodiment of the present application can be adjusted according to needs to achieve the height adjustment of the beam-out position of the radiation source. Thus, the scanning height and scanning range of the radiation scanning and inspection equipment can be adjusted to achieve timely adjustment of the scanning working position when the vehicle chassis heights of different objects to be inspected are different, which is conducive to achieving non-overlapping of chassis imaging information and cargo imaging information.

[0122] When the scanning working position changes, the relative position of the radiation source and the detector remains unchanged.

[0123] The arm structure cover 2 is provided to protect the arm 3 and the transmission scanning device 6 and also ensure that the appearance of the radiation scanning inspection device does not change when the scanning working position of the transmission scanning device is changed.

[0124] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solution requested for protection in this application.

Claims

1. A radiation scanning inspection device, characterized in that: include: A substrate, configured to form a passage (P) for the object to be inspected to pass through when the radiation scanning inspection device performs scanning inspection on the object to be inspected; A transmission scanning device (6), comprising a radiation source (61) for emitting radiation and a detector (62) for detecting radiation emitted by the radiation source (61); and An arm (3), the transmission scanning device (6) being mounted on the arm (3), the arm (3) being rotatably arranged relative to the base, so that the transmission scanning device (6) has at least two scanning working positions by rotating the arm (3) relative to the base, wherein the heights of the beam-emitting position (611) of the ray source (61) are different at different scanning working positions.

2. The radiation scanning inspection device according to claim 1, characterized in that: At different scanning working positions, the position and posture of the detector (62) relative to the ray source (61) are the same.

3. The radiation scanning inspection device according to claim 1, characterized in that: The ray source (61) and the detector (62) are fixed on the arm (3).

4. The radiation scanning inspection device according to claim 1, characterized in that: It comprises an arm support rotating hinge seat (5), and the arm support (3) is hinged to the base body via the arm support rotating hinge seat (5).

5. The radiation scanning inspection device according to claim 4, characterized in that: The arm support rotating hinge seat (5) is arranged to be changeable in position relative to the base body.

6. The radiation scanning inspection device according to claim 1, characterized in that: The arm (3) is configured to rotate around a horizontal axis.

7. The radiation scanning inspection device according to claim 1, characterized in that: The base comprises an arm structure outer cover (2), and the arm (3) is rotatably located in the internal space of the arm structure outer cover (2).

8. The radiation scanning inspection device according to claim 1, characterized in that: It also comprises a cabin (1), wherein the radiation source (61) is located in the internal space of the cabin (1).

9. The radiation scanning inspection device according to any one of claims 1 to 8, characterized in that: The arm (3) comprises: A first arm (31), the ray source (61) being arranged on the first arm (31); a second arm (32), the second arm (32) being arranged at intervals from the first arm (31) on both sides of the channel (P), the bottom end of the second arm (32) being hinged to the base; and The third arm (33) is connected to the top of the first arm (31) and the second arm (32), and the detector (62) is arranged on the second arm (32) and / or the third arm (33).

10. The radiation scanning inspection device according to claim 9, characterized in that: The radiation scanning inspection device further comprises a cabin (1), wherein the radiation source (61) is located in the internal space of the cabin (1); The base comprises an arm structure outer cover (2), the arm (3) is rotatably located in the internal space of the arm structure outer cover (2), the arm structure outer cover (2) is connected to the cabin, and the internal space of the cabin (1) is communicated with the internal space of the arm structure outer cover (2).

11. The radiation scanning inspection device according to claim 10, characterized in that: The arm structure outer cover (2) comprises: a first cover body (21), wherein the lower end of the first cover body (21) is connected to the cabin body (1), and the first arm (31) is located inside the first cover body (21); a second cover body (22) arranged at intervals from the first cover body (21) on both sides of the passage (P), the second arm (32) being located inside the second cover body (22), the bottom of the second arm (32) being hinged to the bottom of the second cover body (22); and A third cover body (23), the third cover body (3) being connected to the top of the first cover body (21) and the second cover body (22), and the third arm (33) being located inside the third cover body (23).

12. The radiation scanning inspection device according to any one of claims 1 to 8, characterized in that: It also comprises a driving device (10), wherein the driving device (10) is drivingly connected to the arm frame (3) and is configured to drive the arm frame (3) to rotate relative to the base.

13. The radiation scanning inspection device according to any one of claims 1 to 8, characterized in that: Also includes: A vehicle chassis height acquisition device (9) is used to acquire height information of a vehicle chassis in the object to be inspected; and The control device (11) is connected to the vehicle chassis height acquisition device (9) by signal, and is configured to control the height of the beam output position (611) according to the height information acquired by the vehicle chassis height acquisition device (9).

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