Vehicle-mounted radiation inspection system

Abstract

The invention relates to a vehicle-mounted radiation inspection system, comprising: a vehicle comprising a vehicle body having a first side and a second side opposite to each other; the scanning device comprises a connecting end, the scanning device is connected to the vehicle body through the connecting end, the scanning device has a folded state and an unfolded state, the scanning device is stored in the vehicle body in the folded state and extends out of the first side in the unfolded state, and the scanning device and the vehicle body jointly form a frame type scanning structure; and the accelerator cabin is movably connected to the vehicle body and at least provided with a retracting position and a counterweight position, the accelerator cabin is stored in the vehicle body at the retracting position, and at least one part of the accelerator cabin is located on the second side at the counterweight position so as to keep torque balance with the scanning device, so that the vehicle-mounted radiation inspection system keeps balance. According to the vehicle-mounted radiation inspection system, when the scanning device is in the unfolded state, the accelerator cabin balances the weight of the scanning device through the weight of the accelerator cabin, and therefore the overall balance of the vehicle-mounted radiation inspection system is guaranteed.

Description

[0001] This application is a divisional application of the original application with application number 201711167368.7 (application date: November 21, 2017, invention title: vehicle-mounted radiation inspection system). Technical Field

[0002] This invention relates to the field of testing equipment technology, and in particular to a vehicle-mounted radiation inspection system. Background Technology

[0003] With the growth of global trade, the demand for containers is increasing daily. More and more goods are being transported and traded using containers. To prevent contraband such as weapons, explosives, illegal drugs, or precious metals from being concealed in containers, but without the need to open the containers for inspection, non-contact inspection using X-ray scanning systems can effectively solve this problem. In open areas (such as ports and airports), a large number of fixed X-ray scanning systems are typically deployed to handle the large volume of container inspections. However, fixed X-ray scanning systems lack mobility and cannot inspect containers in any area at any time, resulting in poor responsiveness. Summary of the Invention

[0004] This invention provides a vehicle-mounted radiation inspection system in which, when the scanning device is deployed, the accelerator compartment uses its own weight to balance the weight of the scanning device, thereby ensuring the overall balance of the vehicle-mounted radiation inspection system.

[0005] On one hand, embodiments of the present invention propose a vehicle-mounted radiation inspection system, comprising: a vehicle, including a body having a first side and a second side opposite to each other; a scanning device including a connecting end, the scanning device being connected to the body through the connecting end, the scanning device having a folded state and an unfolded state, the folded state being housed in the body, and the unfolded state extending out to the first side, forming a frame-shaped scanning structure together with the body; and an accelerator compartment movably connected to the body, the accelerator compartment having at least a retracted position and a counterweight position, the accelerator compartment being housed in the body in the retracted position, and at least a portion of the accelerator compartment being located on the second side in the counterweight position to maintain torque balance with the scanning device, thereby maintaining the balance of the vehicle-mounted radiation inspection system.

[0006] According to one aspect of the present invention, the accelerator compartment is horizontally rotatably connected to the vehicle body via a rotating component. The accelerator compartment rotates to switch between a retracted position and a counterweight position. The rotation axis of the accelerator compartment is offset from its own center of gravity. When the accelerator compartment rotates to the counterweight position, the center of gravity of the accelerator compartment is located on the second side.

[0007] According to one aspect of the present invention, the rotating component includes a rotating ring and a fixed ring that rotate relative to each other, the rotating ring being connected to the accelerator compartment and the fixed ring being connected to the vehicle body.

[0008] According to one aspect of the present invention, the vehicle-mounted radiation inspection system further includes a drive device, the output end of which is connected to a rotating ring to drive the rotating ring and the accelerator compartment to rotate.

[0009] According to one aspect of the present invention, the output end of the drive device and the rotating ring are connected by gear transmission.

[0010] According to one aspect of the present invention, the vehicle body has a central axis, and the connecting end and the rotation axis of the accelerator compartment are respectively located on both sides of the central axis.

[0011] According to one aspect of the present invention, the accelerator compartment is horizontally movably connected to the vehicle body via a guide rail. The accelerator compartment moves horizontally to switch between a retracted position and a counterweight position. When the accelerator compartment moves horizontally to the counterweight position, the center of gravity of the accelerator compartment is located on the second side.

[0012] According to one aspect of the present invention, the vehicle body includes a base and an integral housing disposed on the base, a scanning device is disposed on the top of the integral housing, and an accelerator compartment is disposed on the bottom of the integral housing.

[0013] According to one aspect of the present invention, the vehicle-mounted radiation inspection system further includes a first limiting component and a second limiting component disposed on the vehicle body, wherein the accelerator compartment is limited by the first limiting component when in the retracted position and by the second limiting component when in the counterweight position.

[0014] According to one aspect of the present invention, the vehicle-mounted radiation inspection system further includes a lifting bracket disposed below the accelerator compartment. The lifting bracket includes a telescopic component connected to the accelerator compartment and a roller disposed at the free end of the telescopic component. When the accelerator compartment is in the retracted position or the counterweight position, the lifting bracket is in the raised state. During the process of the accelerator compartment switching from the retracted position to the counterweight position, the lifting bracket is in the lowered state.

[0015] The vehicle-mounted radiation inspection system provided by an embodiment of the present invention includes a scanning device for scanning and detecting an object to be inspected, and an accelerator chamber capable of emitting radiation. When a portion of the scanning device is deployed, it forms a frame-shaped scanning structure with the vehicle body. As the object to be inspected passes through this frame-shaped scanning structure, it is irradiated by radiation and scanned. A portion of the scanning device is located on one side of the vehicle body and generates a predetermined torque on the vehicle body. When the scanning device is in the deployed detection state, the accelerator chamber is switched to a counterweight position to generate the predetermined torque using its own weight. The torque generated by the accelerator chamber and the torque generated by the scanning device cancel each other out, thereby maintaining the overall balance of the vehicle-mounted radiation inspection system. The vehicle-mounted radiation inspection system is highly mobile and flexible, capable of inspecting objects anytime and anywhere, and has strong adaptability. Attached Figure Description

[0016] The features, advantages, and technical effects of exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of a vehicle-mounted radiation inspection system according to an embodiment of the present invention; Figure 2 This is a top view schematic diagram of the overall structure of a vehicle-mounted radiation inspection system according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a vehicle-mounted radiation inspection system in scanning mode according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the overall front view structure of a vehicle-mounted radiation inspection system according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the overall partial cross-sectional structure of a vehicle-mounted radiation inspection system according to an embodiment of the present invention; Figure 6 yes Figure 5 Enlarged view of a section at point B in the middle; Figure 7 This is a schematic diagram of a guide rail structure according to an embodiment of the present invention; Figure 8 yes Figure 4 Schematic diagram of the cross-sectional structure at point AA; Figure 9 This is a schematic diagram of the structure of a lifting support according to an embodiment of the present invention.

[0018] The accompanying drawings are not drawn to scale.

[0019] Marker explanation: 1. Vehicle; 10. Cabin; 11. Body; 11a. First side; 11b. Second side; 111. Base; 112. Integrated casing; 2. Scanning device; 21. Vertical support arm; 22. Horizontal detection arm; 23. Vertical detection arm; 3. Accelerator compartment; 4. Rotating component; 41. Rotating ring; 42. Fixed ring; 5. Drive device; 6. Guide rail; 61. Rack; 62. Gear; 7. First limiting component; 8. Second limiting component; 9. Lifting bracket; 91. Telescopic component; 92. Roller; 100. Center axis; S. Center of gravity. Detailed Implementation

[0020] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention by way of example, but should not be used to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments.

[0021] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," etc., indicating orientation or positional relationships are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the vehicle-mounted radiation inspection system of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0023] To better understand this invention, the following is combined with... Figures 1 to 9 The vehicle-mounted radiation inspection system according to embodiments of the present invention will be described in detail.

[0024] Figure 1 and Figure 2 The structure of the vehicle-mounted radiation inspection system of this embodiment is schematically shown. For example... Figure 1 and Figure 2 As shown, the vehicle-mounted radiation inspection system of this invention includes a vehicle 1, a scanning device 2, and an accelerator compartment 3. The vehicle 1 is mobile and capable of moving independently to carry the scanning device 2 and the accelerator compartment 3 to its destination. The vehicle 1 includes a driver's cab 10 and a body 11 connected to the driver's cab 10. The body 11 has opposing first sides 11a and second sides 11b. Optionally, the body 11 has a predetermined length and width, with the first sides 11a and second sides 11b arranged opposite each other along the width direction of the body 11. The scanning device 2 has a connecting end. The scanning device 2 is connected to the body 11 via the connecting end. The scanning device 2 has a folded state and an unfolded state. When the scanning device 2 is in the folded state, it is stored on the body 11. When the scanning device 2 is in the unfolded state, it extends beyond the first side 11a of the body 11, forming a frame-shaped scanning structure. The frame-shaped scanning structure and the accelerator compartment 3 work together to scan and detect the object to be inspected. During the process of the scanning device 2 unfolding to form a frame-shaped scanning structure, a flipping torque is generated on the vehicle body 11, so that the vehicle 1 as a whole tends to flip towards the first side 11a.

[0025] Figure 3The diagram schematically shows the scanning device 2 in the deployed state and the accelerator chamber 3 in the counterweight position. For example... Figure 3 As shown, the scanning device 2 includes a vertical support arm 21, a horizontal detection arm 22, and a vertical detection arm 23 connected in sequence. The free end of the vertical support arm 21 is the connecting end. The scanning device 2 is connected to the vehicle body 11 through the free end of the vertical support arm 21. The vertical support arm 21, the horizontal detection arm 22, and the vertical detection arm 23 have folded and unfolded states. The vertical support arm 21 moves from the horizontal state to the vertical state, so that the vertical support arm 21, the horizontal detection arm 22, and the vertical detection arm 23 move from the folded state to the unfolded state. The horizontal detection arm 22 and the vertical detection arm 23 move to the first side 11a of the vehicle body 11, at which time the vertical support arm 21, the horizontal detection arm 22, and the vertical detection arm 23 form a frame-type scanning structure. The vertical support arm 21, the horizontal detection arm 22, and the vertical detection arm 23 are large structural components with a large weight. Therefore, during the deployment of the vertical support arm 21, the horizontal detection arm 22, and the vertical detection arm 23, the overturning torque acting on the vehicle body 11 will gradually increase, causing the vehicle 1 to tilt more and more obviously towards the first side 11a.

[0026] To prevent vehicle 1 from overturning, the vehicle-mounted radiographic inspection system of this embodiment uses an accelerator compartment 3 to provide counterweight, counteracting the overturning torque generated when the scanning device 2 is deployed, thereby maintaining the balance of vehicle 1 and ensuring the balance of the entire vehicle-mounted radiographic inspection system. In one example, the accelerator compartment 3 includes a compartment connected to the vehicle body 11 and an accelerator disposed within the compartment. The compartment is a closed structure, protecting the accelerator. The accelerator generates radiation to scan the object to be inspected.

[0027] In this embodiment, the accelerator compartment 3 is movably connected to the vehicle body 11. The accelerator compartment 3 has at least a retracted position and a counterweight position. In the retracted position, the accelerator compartment 3 is housed within the vehicle body 11. In the counterweight position, at least a portion of the accelerator compartment 3 is located on the second side 11b to work in conjunction with the scanning device 2 to maintain the balance of the vehicle body 11, thereby keeping the entire vehicle-mounted radiation inspection system balanced.

[0028] Once the vehicle-mounted radiation inspection system of this embodiment has moved to its destination under the towing of vehicle 1, the scanning device 2 is switched from a folded state to an unfolded state. The accelerometer compartment 3 is switched from a retracted position to a counterweight position, so that the torque generated by the accelerometer compartment 3 balances the torque generated by the scanning device 2. In this way, no additional counterweight structure is required, thereby reducing the overall weight of the vehicle.

[0029] The accelerator compartment 3 in the retracted position and the scanning device 2 in the folded state also maintain torque balance so that the vehicle 1 maintains overall balance during driving or when stationary, ensuring the safety of the vehicle-mounted radiation inspection system during movement or when parked.

[0030] Figure 4 The illustration schematically shows the accelerator compartment 3 in the retracted position. (As shown) Figure 4 As shown, in this embodiment, the accelerator compartment 3 is directly suspended from the vehicle body 11 and can be switched from the retracted position to the counterweight position. It does not need to be connected to the vehicle body 11 through an additional support structure, which makes the structure of the accelerator compartment 3 simple and compact, easy to assemble with the vehicle body 11, and also reduces the overall weight of the vehicle-mounted radiation inspection system.

[0031] In one embodiment, such as Figure 5 and Figure 6 As shown, the accelerator compartment 3 is horizontally rotatably connected to the vehicle body 11 via a rotating component 4. The accelerator compartment 3 switches between a retracted position and a counterweight position through its own rotational motion. The rotation axis of the accelerator compartment 3 is offset from its own center of gravity. When the accelerator compartment 3 rotates to the counterweight position, its center of gravity S is located on the second side 11b of the vehicle body 11.

[0032] In one embodiment, the vehicle body 11 has a central axis 100. A first side 11a and a second side 11b of the vehicle body 11 are respectively located on both sides of the central axis 100. The rotation axis of the accelerator compartment 3 intersects the central axis 100. Alternatively, the rotation axis of the accelerator compartment 3 and the connection end of the scanning device 2 are located on both sides of the central axis 100, such that the rotation axis of the accelerator compartment 3 and the connection end of the scanning device 2 are respectively separated from the central axis 100 by a predetermined distance. The rotational torque generated by the center of gravity S of the accelerator compartment 3 in the counterweight position relative to the central axis 100 is equal to the rotational torque generated by the center of gravity of the scanning device 2 in the deployed state relative to the central axis 100, thereby ensuring that the accelerator compartment 3 and the scanning device 2 are in a balanced state, thus guaranteeing that the entire vehicle-mounted radiation inspection system is in a balanced state.

[0033] As the scanning device 2 gradually transitions from a folded state to an unfolded state, its center of gravity gradually shifts to the first side 11a of the vehicle body 11, and its vertical distance from the central axis 100 of the vehicle body 11 gradually increases. Simultaneously, the accelerator compartment 3 can rotate from its retracted position to its counterweight position, causing its center of gravity S to gradually shift to the second side 11b of the vehicle body 11, and its vertical distance from the central axis 100 of the vehicle body 11. This ensures that at any position during the transition from a folded to an unfolded state, the accelerator compartment 3 generates the same tilting torque, preventing the vehicle body 11 from tipping over to either side. This guarantees that the vehicle-mounted radiation inspection system remains in a self-balancing state in real time, improving detection accuracy and safety during the inspection process.

[0034] In one example, the vehicle body 11 has a predetermined length and width. A central axis 100 extends along the length direction, and a first side 11a and a second side 11b are respectively disposed opposite each other along the width direction. The central axis 100 is located at the midpoint between the first side 11a and the second side 11b.

[0035] Optionally, the accelerator compartment 3 and the scanning device 2 do not maintain synchronized movement. The scanning device 2 can be pre-swapped from a folded state to an unfolded state, and then the accelerator compartment 3 can be operated to switch from the retracted position to the counterweight position. Alternatively, the accelerator compartment 3 can be pre-swapped from the retracted position to the counterweight position, and then the scanning device 2 can be operated to switch from the folded state to the unfolded state.

[0036] The rotating component 4 in this embodiment includes a rotating ring 41 and a fixed ring 42 that are rotatably arranged relative to each other. The accelerator compartment 3 is connected to the rotating ring 41. The vehicle body 11 is connected to the fixed ring 42. The rotating ring 41 and the fixed ring 42 are coaxially sleeved. The rotating component 4, composed of the rotating ring 41 and the fixed ring 42, has good axial load-bearing capacity to ensure that the accelerator compartment 3 rotates smoothly horizontally and its own position does not shift in the vertical direction. One of the rotating ring 41 and the fixed ring 42 is provided with an annular guide rail, and the other is seated on the annular guide rail, so that the relative position of the rotating ring 41 and the fixed ring 42 is not easily shifted, and the frictional resistance between them is small, ensuring the stability of the accelerator compartment 3 during the rotation process and improving the positional accuracy.

[0037] Optionally, the rotating component 4 also includes a rolling element disposed between the rotating ring 41 and the fixed ring 42. When the rotating ring 41 and the fixed ring 42 are rotatably connected to each other through the rolling element, the frictional resistance is further reduced, making it easier to drive the rotating ring 41 to rotate relative to the fixed ring 42.

[0038] The vehicle-mounted radiation inspection system of this embodiment also includes a drive unit 5. The output end of the drive unit 5 is connected to the rotating ring 41 to simultaneously drive the rotating ring 41 and the accelerator chamber 3 to rotate. The operator can directly control the drive unit 5 to drive the accelerator chamber 3 to rotate, for example, by remotely controlling the drive unit 5 directly from the driver's cab 10. In this way, the rotational movement of the accelerator chamber 3 is automatically controlled, allowing personnel to stay away from the accelerator chamber 3 and avoid radiation exposure, thus improving the safety of the inspection process.

[0039] In one embodiment, the drive unit 5 includes a controller, a hydraulic motor, a brake, and a transmission structure. The controller controls the start and stop of the hydraulic motor. The brake is used to brake the hydraulic motor in a timely manner when the accelerator compartment 3 is in the retracted position or the counterweight position, to prevent the accelerator compartment 3 from colliding with the vehicle body 11 after exceeding the retracted position or the counterweight position, thus ensuring the safety of the accelerator compartment 3. The output end of the transmission mechanism is connected to the rotating ring 41.

[0040] Optionally, the output end of the drive device 5 and the rotating ring 41 are connected by gear drive, chain drive, or belt drive. Preferably, the output end of the drive device 5 and the rotating ring 41 are connected by gear drive. The output end of the drive device 5 includes a drive gear, and the outer peripheral surface of the rotating ring 41 is provided with multiple teeth for meshing with the drive gear. Gear drive provides high transmission accuracy and smooth transmission, ensuring good stability during the horizontal rotation of the accelerator compartment 3.

[0041] Optionally, the scanning device 2 in this embodiment is rotatably connected to the vehicle body 11. The scanning device 2 rotates and eventually unfolds to form a frame-type scanning structure. When the scanning device 2 includes a vertical support arm 21, a horizontal detection arm 22, and a vertical detection arm 23, the free end of the vertical support arm 21 is rotatably connected to the vehicle body 11 through a rotating connecting member. The vertical support arm 21 moves from a horizontal state to a vertical state, then rotates and stops at a predetermined position, and then the horizontal detection arm 22 and the vertical detection arm 23 unfold in sequence. The horizontal detection arm 22 and the vertical detection arm 23 unfold to the first side 11a of the vehicle body 11, at which point the vertical support arm 21, the horizontal detection arm 22, and the vertical detection arm 23 form a frame-type scanning structure. When the vertical support arm 21 rotates, the accelerator compartment 3 can rotate synchronously, so that the two maintain synchronous movement and remain in a balanced state in real time.

[0042] In one embodiment, such as Figure 7 As shown, the accelerator compartment 3 is horizontally movably connected to the vehicle body 11 via guide rail 6. The accelerator compartment 3 moves horizontally to switch between a retracted position and a counterweight position. When the accelerator compartment 3 moves horizontally to the counterweight position, its center of gravity S is located on the second side 11b of the vehicle body 11.

[0043] The accelerator compartment 3 gradually extends out of the vehicle body 11 in a horizontal movement. The direction of movement of the accelerator compartment 3 is the same as the parallel direction of the first side 11a and the second side 11b. When the accelerator compartment 3 switches from the retracted position to the counterweight position, the accelerator compartment 3 moves horizontally away from the first side 11a, so that its center of gravity gradually moves away from the first side 11a.

[0044] When the space between the vehicle body 11 and other objects in the direction perpendicular to the movement direction of the accelerator compartment 3 is relatively narrow, since the accelerator compartment 3 switches between the retracted position and the counterweight position by moving horizontally, the accelerator compartment 3 is not affected by the size of the reserved space and can smoothly switch between the retracted position and the counterweight position, thus improving the adaptability and flexibility of the accelerator compartment 3.

[0045] Optionally, the guide rail 6 can be a lead screw drive or a rack and pinion drive.

[0046] The vehicle-mounted radiation inspection system of this embodiment includes a drive unit 5. The drive unit 5 is capable of driving the accelerator chamber 3 to move horizontally. The operator can directly control the drive unit 5 to drive the accelerator chamber 3 to move horizontally, for example, by remotely controlling the drive unit 5 directly from the driver's cab 10. In this way, the rotational movement of the accelerator chamber 3 is automatically controlled, allowing personnel to stay away from the accelerator chamber 3 and avoid being exposed to radiation from the radiation source, thus improving the safety of the inspection process.

[0047] When guide rail 6 is a lead screw drive pair, the lead screw drive pair includes a lead screw nut and a lead screw. The lead screw nut is connected to the accelerator compartment 3, and the lead screw is connected to the output end of the drive device 5. The drive device 5 drives the lead screw to rotate, thereby driving the lead screw nut and the accelerator compartment 3 to move horizontally along the axial direction of the lead screw. When guide rail 6 is a rack and pinion drive pair, the rack 61 is connected to the accelerator compartment 3, and the output end of the drive device 5 is provided with a gear 62. The drive device 5 drives the gear 62 to rotate, thereby driving the rack 61 and the accelerator compartment 3 to move horizontally along the length direction of the rack.

[0048] Optionally, the scanning device 2 in this embodiment can be horizontally movably connected to the vehicle body 11. The scanning device 2 moves horizontally and eventually unfolds to form a frame structure. When the scanning device 2 includes a vertical support arm 21, a horizontal detection arm 22, and a vertical detection arm 23, the free end of the vertical support arm 21 is connected to the vehicle body 11 via a horizontal track component. The vertical support arm 21 can move horizontally along the horizontal track. The direction of movement of the vertical support arm 21 is the same as the parallel direction of the first side 11a and the second side 11b. The vertical support arm 21 moves from a horizontal state to a vertical state, then moves horizontally and stops at a predetermined position, and then unfolds the horizontal detection arm 22 and the vertical detection arm 23 in sequence. The horizontal detection arm 22 and the vertical detection arm 23 unfold to the first side 11a of the vehicle body 11, at which time the vertical support arm 21, the horizontal detection arm 22, and the vertical detection arm 23 form a frame scanning structure. When the vertical support arm 21 moves horizontally, the accelerator compartment 3 can move horizontally synchronously, so that the two maintain synchronous movement and remain in a balanced state in real time.

[0049] like Figure 8 As shown, the vehicle-mounted radiation inspection system of this embodiment also includes a first limiting component 7 and a second limiting component 8. When the accelerator compartment 3 is in the retracted position, it is limited by the first limiting component 7; when it is in the counterweight position, it is limited by the second limiting component 8. The first limiting component 7 or the second limiting component 8 ensures that the accelerator compartment 3 moves accurately to the retracted position or the counterweight position, improving positional accuracy and preventing the accelerator compartment 3 from exceeding the retracted position or the counterweight position, which could lead to incorrect retraction or collision with the vehicle body 11 and subsequent damage. When the accelerator compartment 3 is in the counterweight position, it emits radiation in a specific direction; therefore, the counterweight position accuracy is crucial. The second limiting component 8 ensures that the accelerator compartment 3 is precisely positioned at the predetermined counterweight position, guaranteeing the detection accuracy of the vehicle-mounted radiation inspection system.

[0050] In this embodiment, the first limiting component 7 and the second limiting component 8 can be a travel limit switch, a photoelectric limit switch, or a mechanical limit switch to improve the automation level of the vehicle-mounted radiation inspection system. Alternatively, they can be a limiting post and an elastic buffer pad disposed at one end of the limiting post. When the first limiting component 7 and the second limiting component 8 are limiting posts, the elastic buffer pad can protect the accelerator compartment 3 and prevent the accelerator compartment 3 from rigidly colliding with the limiting post.

[0051] Optionally, the first limiting component 7 and the second limiting component 8 can be installed on the vehicle body 11 or on the accelerator compartment 3.

[0052] like Figure 9As shown, the vehicle-mounted radiation inspection system of this embodiment also includes a lifting bracket 9 disposed below the accelerator compartment 3. The lifting bracket 9 includes a telescopic component 91 connected to the accelerator compartment 3 and a roller 92 disposed at the free end of the telescopic component 91. In this embodiment, the telescopic component 91 can be a multi-stage hydraulic telescopic rod, and the roller 92 can be a caster wheel. When the accelerator compartment 3 is in the retracted position, the lifting bracket 9 is in the raised state, so that the roller 92 maintains a distance from the base surface supporting the vehicle-mounted radiation inspection system, thereby preventing the vehicle-mounted radiation inspection system from being affected or obstructed during movement. When the accelerator compartment 3 is in the counterweight position, the lifting bracket 9 is in the raised state, so that the roller 92 maintains a distance from the base surface supporting the vehicle-mounted radiation inspection system, thereby suspending the accelerator compartment 3 to generate a predetermined overturning torque. When the accelerator compartment 3 switches between the retracted position and the counterweight position, the lifting bracket 9 is in the lowered state, so that the roller 92 maintains contact with the base surface supporting the vehicle-mounted radiation inspection system. The lifting bracket 9 lifts the accelerator compartment 3 to counteract the gravity of the accelerator compartment 3 and avoid the accelerator compartment 3 from being suspended in the air for a long time, which would cause premature fatigue failure at the connection between the accelerator compartment 3 and the vehicle body 11.

[0053] In this embodiment, the vehicle body 11 is a one-piece structure, including a base 111 and an integrated casing 112 disposed on the base 111. The scanning device 2 is disposed on the top of the integrated casing 112. The accelerator compartment 3 is disposed on the bottom of the integrated casing 112. A recess is provided on the top of the integrated casing 112, into which the scanning device 2, in its folded state, is housed. A stepped structure is provided on the bottom of the integrated casing 112, into which the accelerator compartment 3, in its retracted position, is housed. When the integrated casing 112 has a predetermined length and width, the accelerator compartment 3 has the same width as the integrated casing 112 in the width direction. The end face of the integrated casing 112 in the length direction is flush with the outer surface of the accelerator compartment 3, thereby completely housing the accelerator compartment 3 at the bottom of the integrated casing 112, ensuring the safety of the accelerator compartment 3 and making the overall structure composed of the integrated casing 112 and the accelerator compartment 3 aesthetically pleasing.

[0054] The vehicle-mounted radiation inspection system of this invention can be deployed for scanning and inspection anytime and anywhere according to on-site needs, making it highly mobile, adaptable, and widely applicable. The vehicle-mounted radiation inspection system achieves balance by using the weight of the accelerator compartment 3 to counterbalance the weight of the scanning device 2. The accelerator compartment 3 and the scanning device 2 exert equal and opposite overturning torques on the vehicle body 11, ensuring that the vehicle body 11 will not tip over to either the first side 11a or the second side 11b. This guarantees the overall balance of the vehicle-mounted radiation inspection system in the folded, unfolded, and transitioning states of the scanning device 2.

[0055] Although the invention has been described with reference to preferred embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A vehicle-mounted radiation inspection system, characterized in that, include: A vehicle includes a body having a predetermined length and width, and the body having a first side and a second side opposite to each other along the width direction; A scanning device includes a connecting end, the scanning device is connected to the vehicle body through the connecting end, the scanning device has a folded state and an unfolded state, the scanning device is stored in the vehicle body in the folded state, and extends out the first side in the unfolded state, and together with the vehicle body, forms a frame-shaped scanning structure. An accelerator compartment is movably connected to the vehicle body. The accelerator compartment has at least a retracted position and a counterweight position. The accelerator compartment is housed in the vehicle body in the retracted position. In the counterweight position, at least a portion of the accelerator compartment is located on the second side. The accelerator compartment is horizontally rotatably connected to the vehicle body via a rotating component. The accelerator compartment rotates to switch between the retracted position and the counterweight position. The rotation axis of the accelerator compartment is offset from its own center of gravity. When the accelerator compartment rotates to the counterweight position, the center of gravity of the accelerator compartment is located on the second side. The vehicle body has a central axis that extends along the length of the vehicle body. A first side and a second side of the vehicle body are respectively arranged along the width direction and located on both sides of the central axis. The central axis is located at the middle position between the first side and the second side. Along the width direction, the connecting end and the rotation axis of the accelerator compartment are respectively located on both sides of the central axis, so that the rotation axis of the accelerator compartment and the connecting end of the scanning device are respectively at a predetermined distance from the central axis.

2. The vehicle-mounted radiation inspection system according to claim 1, characterized in that, The rotating component includes a rotating ring and a fixed ring that rotate relative to each other. The rotating ring is connected to the accelerator compartment, and the fixed ring is connected to the vehicle body.

3. The vehicle-mounted radiation inspection system according to claim 2, characterized in that, It further includes a drive device, the output of which is connected to the rotating ring to drive the rotating ring and the accelerator compartment to rotate.

4. The vehicle-mounted radiation inspection system according to claim 3, characterized in that, The output end of the drive device and the rotating ring are connected by gear transmission.

5. The vehicle-mounted radiation inspection system according to any one of claims 1 to 4, characterized in that, The vehicle body includes a base and an integrated casing mounted on the base. The scanning device is located on the top of the integrated casing, and the accelerator compartment is located on the bottom of the integrated casing.

6. The vehicle-mounted radiation inspection system according to any one of claims 1 to 4, characterized in that, It further includes a first limiting component and a second limiting component disposed on the vehicle body, wherein the accelerator compartment is limited by the first limiting component when in the retracted position, and the accelerator compartment is limited by the second limiting component when in the counterweight position.

7. The vehicle-mounted radiation inspection system according to any one of claims 1 to 4, characterized in that, The system further includes a lifting support located below the accelerator compartment. The lifting support includes a telescopic component connected to the accelerator compartment and a roller located at the free end of the telescopic component. When the accelerator compartment is in the retracted position or the counterweight position, the lifting support is in a raised state. During the process of the accelerator compartment switching from the retracted position to the counterweight position, the lifting support is in a lowered state.

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