Vehicle-mounted security inspection system

Abstract

Provided is a vehicle-mounted security inspection system, comprising a chassis, a plurality of supporting legs mounted on the chassis, and a scanning device of a radiation inspection apparatus mounted on the chassis. Each supporting leg has a retracted state in which it is retracted towards the chassis, and a deployed state in which it is extended towards the ground to support the weight of the vehicle. The scanning device comprises an upright frame and a sliding ring rotatably mounted on the upright frame. The chassis comprises a main body portion and a horizontal frame integrally connected to the main body portion, the height of the main body portion from the ground being greater than the height of the horizontal frame from the ground. The height of the inspection apparatus from the ground can be reduced, thereby facilitating the placement of a target to be inspected on a conveying structure or the removal of an inspected target from the conveying structure by relevant personnel.

Description

[0001] This disclosure is a divisional application of the original application, number 202110344213.6, entitled "Vehicle-mounted Security Inspection System". Technical Field

[0002] Embodiments of this disclosure relate to an in-vehicle security inspection system, and more particularly to a mobile in-vehicle security inspection system. Background Technology

[0003] Driven by public safety needs, vehicle-mounted security inspection systems are frequently used in large public places such as large exhibitions, temporary highway checkpoints, border crossings, and stadiums to conduct non-intrusive inspections of targets such as suitcases or packages. These systems utilize vehicle-mounted X-ray inspection equipment to check for contraband such as drugs or explosives. The target is typically conveyed through the inspection space of the X-ray inspection equipment via a transport structure, and the X-ray emitting device emits X-rays into the X-ray channel to inspect the target.

[0004] In existing vehicle-mounted security inspection systems, X-ray inspection equipment is directly installed inside the vehicle's cargo box. This equipment typically consists of a housing and a scanning unit (CT scanner) housed within it. The scanning unit mainly includes: a support frame, a slip ring rotatably mounted on the support frame, a radiation source mounted on the slip ring suitable for emitting X-rays, a detector array mounted on the side of the slip ring opposite the radiation source, and a transport structure passing through approximately the center of the slip ring. Because the X-ray inspection equipment is installed inside the vehicle's cargo box, uneven parking can cause the entire vehicle to tilt relative to the horizontal plane, resulting in a tilt of the scanning unit and consequently affecting inspection accuracy. Summary of the Invention

[0005] The purpose of this disclosure is to address at least one aspect of the aforementioned problems and defects existing in the prior art.

[0006] According to one embodiment of this disclosure, a vehicle-mounted security inspection system is provided. The vehicle-mounted security inspection system includes: a chassis; a plurality of support legs mounted on the chassis, each support leg having a retracted state retracting towards the chassis and an extended state extending towards the ground to support the weight of the vehicle; and a scanning device including: an upright frame mounted on the chassis; and a slip ring rotatably mounted on the upright frame; the chassis includes: a main body; and a horizontal frame integrally connected to the main body, the height of the main body above the ground being greater than the height of the horizontal frame above the ground.

[0007] According to one embodiment of the present disclosure, the horizontal frame includes a pair of longitudinal support beams and a pair of transverse support frames, and the vertical frame is mounted on one of the longitudinal support beams and the transverse support beams.

[0008] According to one embodiment of the present disclosure, the vehicle-mounted security inspection system further includes: a level sensor adapted to detect the levelness of the scanning device; and a controller adapted to adjust the extension degree of at least one of the plurality of support legs according to the levelness measured by the level sensor, so that the scanning device is maintained in a predetermined posture.

[0009] According to one embodiment of this disclosure, the horizontal sensor is mounted on one of the longitudinal support beam and the transverse support beam suitable for mounting the upright frame.

[0010] According to one embodiment of this disclosure, the upright frame is mounted on the horizontal frame by two sets of connecting mechanisms; each set of connecting mechanisms includes a horizontal arm extending outward from the outside of the upright frame and supported on the longitudinal support beam or the transverse support beam.

[0011] According to one embodiment of this disclosure, each set of the connecting mechanisms further includes: an upright arm mounted on the outside of the upright frame, the horizontal arm being connected to the lower end of the upright arm.

[0012] According to one embodiment of this disclosure, each set of the connecting mechanisms further includes a plurality of reinforcing ribs connecting the upright arm and the horizontal arm.

[0013] According to one embodiment of this disclosure, the two sets of connecting mechanisms are respectively installed between the upper and lower ends of the two sides of the upright frame, such that at least a portion of the upright frame is lower than the upper surface of the horizontal frame.

[0014] According to one embodiment of this disclosure, the height of the main body from the ground is greater than the height of the horizontal frame from the ground.

[0015] According to one embodiment of this disclosure, the horizontal sensor is mounted on the upright frame.

[0016] According to one embodiment of the present disclosure, each of the support legs includes: a base mounted on the chassis; a first telescopic mechanism telescopically mounted on the base; and a second telescopic mechanism pivotally mounted at an end of the first telescopic mechanism.

[0017] According to one embodiment of this disclosure, the first telescopic mechanism includes: a first hydraulic cylinder mounted on the base; and a first piston rod that reciprocates linearly relative to the first hydraulic cylinder under the drive of the first hydraulic cylinder. The second telescopic mechanism includes: a second hydraulic cylinder pivotally mounted at the end of the first piston rod; and a second piston rod that reciprocates linearly relative to the second hydraulic cylinder under the drive of the second hydraulic cylinder.

[0018] According to one embodiment of this disclosure, the scanning device further includes a locking mechanism adapted to lock the slip ring to prevent the slip ring from rotating relative to the upright frame.

[0019] According to one embodiment of this disclosure, the locking mechanism includes: a drive mechanism mounted on the upright frame; and a contact portion mounted on the drive mechanism to contact the outer ring of the slip ring under the drive of the drive mechanism, thereby preventing the slip ring from rotating relative to the upright frame.

[0020] According to one embodiment of the present disclosure, the contact portion includes: a base connected to the drive mechanism; and an elastic pad mounted on the base and configured to elastically contact the outer ring of the slip ring.

[0021] According to one embodiment of the present disclosure, the drive mechanism includes: a link, a first end of which is pivotally connected to the upright frame, and a contact portion pivotally connected between the first end and a second end of the link; a driver mounted on the upright frame; and a drive rod connected between the driver and the second end of the link, and configured to reciprocate linearly relative to the driver under the drive of the driver to drive the link to pivot relative to the upright frame.

[0022] According to one embodiment of the present disclosure, the drive mechanism further includes a buffer device installed between the second end of the drive rod and the connecting rod.

[0023] According to one embodiment of the present disclosure, the buffer device includes: a sleeve, a first end of which is pivotally connected to the connecting rod; and a spring installed inside the sleeve, one end of the drive rod being inserted into the sleeve and driving the sleeve to move by biasing the spring.

[0024] According to one embodiment of this disclosure, the buffer device further includes: an end cap mounted on the sleeve; and a connecting block mounted on one end of the drive rod, the connecting block passing through the end cap, inserting into the sleeve, and abutting against the spring.

[0025] According to one embodiment of the present disclosure, a radially outwardly projecting flange is provided on the connecting block, the flange being located inside the end cap.

[0026] According to one embodiment of the present disclosure, a limiting rod is provided between the connecting rod at the position where the connecting rod connects with the contact portion and the second end, and a limiting block suitable for receiving the limiting rod is provided on the base.

[0027] According to one embodiment of the present disclosure, the locking mechanism further includes: a first proximity switch mounted on the upright frame; and a mating switch mounted on the linkage, wherein the actuator, in response to the mating switch approaching the first proximity switch, stops driving the contact portion to move further toward the slip ring.

[0028] According to one embodiment of the present disclosure, the locking mechanism further includes: a second proximity switch mounted on the upright frame, wherein the actuator, in response to the mating switch approaching the first proximity switch, stops driving the contact portion to move further away from the slip ring. Attached Figure Description

[0029] Figure 1 A side view of an exemplary embodiment of the present disclosure of an in-vehicle security inspection system is shown;

[0030] Figure 2 It shows Figure 1 The image shows a simplified side view of the interior of the vehicle-mounted security inspection system.

[0031] Figure 3 It shows Figure 2 A partial longitudinal sectional view of the vehicle-mounted security inspection system shown;

[0032] Figure 4 It shows Figure 2 The image shows a top view of the vehicle-mounted security inspection system.

[0033] Figure 5 A simplified front view of a radiographic inspection apparatus according to an exemplary embodiment of the present disclosure is shown;

[0034] Figure 6 It shows Figure 3 An enlarged schematic diagram of part A shown;

[0035] Figure 7 It shows Figure 4 An enlarged schematic diagram of part B shown;

[0036] Figure 8 It shows Figure 7 A partial rear view viewed from position F;

[0037] Figure 9 A simplified schematic diagram of a locking mechanism combined with a slip ring according to an exemplary embodiment of the present disclosure is shown, with the locking mechanism in an unlocked state.

[0038] Figure 10 It shows Figure 9 An enlarged schematic diagram of section C shown;

[0039] Figure 11 It shows Figure 9The diagram shows a simplified illustration of the locking mechanism combined with the slip ring, with the locking mechanism in the locked state.

[0040] Figure 12 It shows Figure 9 An enlarged schematic diagram of part D shown;

[0041] Figure 13 Another simplified schematic diagram of a locking mechanism combined with a slip ring according to an exemplary embodiment of the present disclosure is shown, wherein the locking mechanism is in a locked state.

[0042] Figure 14 It shows Figure 13 Top view;

[0043] Figure 15 It shows Figure 13 An enlarged schematic diagram of part E shown;

[0044] Figure 16 A simplified schematic diagram of the support leg of an on-board security inspection system according to an exemplary embodiment of the present disclosure is shown.

[0045] Figure 17 A simplified internal side view of an onboard security inspection system, representing another exemplary embodiment of this disclosure, is shown.

[0046] Figure 18 It shows Figure 17 The image shows a top view of the vehicle-mounted security inspection system.

[0047] Figure 19 It shows Figure 17 The diagram shows a three-dimensional representation of the chassis of the vehicle-mounted security inspection system; and

[0048] Figure 20 It shows Figure 17 An enlarged schematic diagram of part F shown. Detailed Implementation

[0049] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0050] In the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the drawings. Techniques, methods, and apparatuses known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatuses should be considered part of the specification.

[0051] In the description of this disclosure, it should be understood that directional terms such as "front, rear, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship, which are generally based on the orientation or positional relationship shown in the accompanying drawings and are based on the direction of travel of the vehicle. They are used only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this disclosure. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0052] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0053] According to a general inventive concept of this disclosure, a vehicle-mounted security inspection system is provided, including a chassis, a plurality of support legs mounted on the chassis, and a scanning device of a radiographic inspection device mounted on the chassis. Each support leg has a retracted state retracted toward the chassis and an extended state extended toward the ground to support the weight of the vehicle. The scanning device includes an upright frame and a slip ring rotatably mounted on the upright frame. A level sensor is adapted to detect the levelness of the scanning device. The chassis includes a main body and a horizontal frame integrally connected to the main body, the height of the main body above the ground being greater than the height of the horizontal frame above the ground.

[0054] Figure 1 A side view of an exemplary embodiment of the present disclosure of an in-vehicle security inspection system is shown; Figure 2 It shows Figure 1 The image shows a simplified side view of the interior of the vehicle-mounted security inspection system. Figure 3 It shows Figure 2 A partial longitudinal sectional view of the vehicle-mounted security inspection system shown; Figure 4 It shows Figure 2 The image shows a top view of the vehicle-mounted security inspection system.

[0055] In one exemplary embodiment, see Figure 1-4 The vehicle-mounted security inspection system 100 is suitable for inspecting luggage, packages, handbags, and other items in high-traffic areas such as train stations, airports, stadiums, and shopping malls for prohibited items such as drugs and explosives. The vehicle-mounted security inspection system 100 includes a vehicle 10 and a scanning device 20 for X-ray inspection equipment installed on the vehicle. The vehicle 10 includes: a chassis 101, a cargo box 11 mounted on the chassis, a driver's cab 12, a partition 13 separating the driver's cab 12 and the cargo box 11, and wheels 14 mounted on the underside of the chassis.

[0056] Figure 5 A simplified front view of a radiographic inspection apparatus according to an exemplary embodiment of the present disclosure is shown; Figure 6 It shows Figure 3 An enlarged schematic diagram of part A shown; Figure 7 It shows Figure 4 An enlarged schematic diagram of part B shown; Figure 8 It shows Figure 7 A partial rear view viewed from position F.

[0057] In one exemplary embodiment, see Figure 1-8 The vehicle-mounted security inspection system 100 also includes a scanning device for a radiographic inspection device mounted on the chassis 101 of the vehicle 10. The vehicle 100 also includes a plurality of support legs 6 mounted on the chassis 101, each support leg 6 having a retracted state (contracted towards the chassis 101) and an extended state (extended towards the ground to support the weight of the vehicle 10). The scanning device 20 includes an upright frame 3 and a slip ring 4 rotatably mounted on the upright frame 3. The chassis includes a main body and a horizontal frame integrally connected to the main body, the height of the main body above the ground being greater than the height of the horizontal frame above the ground. This reduces the height of the inspection device above the ground, facilitating the placement of the target 40 to be inspected on the conveying structure 30 or the removal of the inspected target 40 from the conveying structure 30 by relevant personnel. The vehicle-mounted security inspection system 100 also includes a level sensor 8 and a controller. The level sensor 8 is adapted to detect the levelness of the scanning device 20. The controller is adapted to adjust the extension degree of at least one of the plurality of support legs 6 according to the levelness detected by the level sensor 8, so that the scanning device 20 is maintained in a predetermined posture.

[0058] In this disclosure, the technical term "predetermined posture" refers to the optimal placement posture of the scanning device for achieving the best measurement accuracy. For example, the optimal placement posture can be the posture of the scanning device when placed on a horizontal surface, where the plane containing the circumference of the slip ring of the scanning device is perpendicular to the horizontal surface, and the virtual axis of rotation of the slip ring remains parallel to the horizontal surface. Levelness refers to the angle of the mounting surface of the mounting base of the level sensor relative to the horizontal surface when it is installed in a certain initial posture (reference levelness). Those skilled in the art will understand that there is a fixed correspondence between the initial mounting posture of the level sensor and the optimal placement posture of the scanning device. Therefore, the greater the deviation of the measured levelness from the initial mounting posture (reference levelness), the greater the deviation of the real-time measurement accuracy of the scanning device from the optimal measurement accuracy; conversely, the smaller the deviation of the measured levelness from the initial mounting posture, the smaller the deviation of the real-time measurement accuracy of the scanning device from the optimal measurement accuracy.

[0059] In one exemplary embodiment, see Figure 1-8 The X-ray inspection equipment also includes: radiation sources (not shown) for emitting X-rays installed on opposite sides of the slip ring 4, detector arrays (not shown) for receiving X-rays, a transmission mechanism 30 for carrying the target 40 through the slip ring 4, and shielding curtains 8 provided at the entrance and exit of the X-ray inspection equipment.

[0060] According to the vehicle-mounted security inspection system 100 of this disclosure, the controller adjusts the extension degree of at least one of the plurality of support legs based on the levelness measured by the level sensor, thereby keeping the scanning device in a predetermined posture, that is, in an optimal placement posture with the best measurement accuracy. Thus, regardless of how uneven the ground on which the vehicle 10 is parked, the parking posture of the vehicle can be adjusted by adjusting the extension degree of certain support legs, keeping the scanning device in an optimal placement posture with the best measurement accuracy, thereby improving the inspection accuracy of the X-ray inspection equipment. Furthermore, the vehicle-mounted security inspection system of this disclosure can keep the slip ring of the scanning device perpendicular to the horizontal plane in the working state, and the virtual rotation axis of the slip ring parallel to the horizontal plane, reducing the risk of slip ring damage and increasing the service life of the slip ring. In addition, the stability of the radiation source and detector array mounted on the slip ring can be ensured.

[0061] In one exemplary embodiment, see Figure 1-8The horizontal frame 2 includes a pair of longitudinal support beams 21 and a pair of transverse support frames 22 arranged along the vehicle's direction of travel. The pair of longitudinal support beams 21 and the pair of transverse support frames 22 define a generally rectangular receiving space 23. The vertical frame 3 is mounted on the transverse support beams 22. The level sensor 8 is mounted on a horizontal mounting surface suitable for mounting the transverse support beams 22 of the vertical frame 3.

[0062] In one exemplary embodiment, the upright frame 3 is mounted on the horizontal frame 2 via two sets of connecting mechanisms 5. Each set of connecting mechanisms 5 includes a horizontal arm 51 extending outward from the outside of the upright frame 3 and supported on the transverse support beam 22. In one exemplary embodiment, each set of connecting mechanisms 5 further includes an upright arm 52 mounted on the outside of the upright frame 3, with the horizontal arm 51 connected to the lower end of the upright arm 52. This increases the support strength of the horizontal arm 51. Further, each set of connecting mechanisms 5 includes a plurality of reinforcing ribs 53 connecting the upright arm 52 and the horizontal arm 51 to further increase the support strength of the horizontal arm 51. A backing plate 54 can be pre-welded onto the transverse support beam 22 of the horizontal frame 2 to increase the support strength of the transverse support beam 22. For example, the horizontal arm 51 of the connecting mechanism 5 can be fixed to the transverse support beam 22 using a bolt assembly.

[0063] In one exemplary embodiment, see Figure 1-8 The two sets of connecting mechanisms 5 are respectively installed between the upper and lower ends of the two sides of the upright frame 3, such that at least a portion of the upright frame 3 is lower than the upper surface of the horizontal frame 2. That is, at least a portion of the lower part of the upright frame 3 is accommodated in the accommodating space 23. Since at least a portion of the upright frame 3 is lower than the upper surface of the horizontal frame 2, the conveying structure 30 of the X-ray inspection equipment for transporting the target 40 to be inspected is also correspondingly lowered, thereby facilitating the placement of the target 40 to be inspected on the conveying structure 30 or the removal of the inspected target 40 from the conveying structure 30 by relevant personnel. In addition, since the height of the slip ring 4 is also correspondingly reduced, the stability of the radiation source and detector array mounted on the slip ring can be increased.

[0064] According to an exemplary embodiment of the present invention, such as Figure 3 and 6 As shown, the height of the main body 1 of the chassis from the ground is greater than the height of the horizontal frame 2 from the ground. This further reduces the height of the inspection equipment from the ground.

[0065] According to an exemplary embodiment of the present invention, such as Figure 5As shown, the horizontal sensor 8 is mounted on the upright frame 3. This allows the horizontal sensor 8 to more accurately measure the placement orientation of the scanning device 20.

[0066] Figure 16 A simplified schematic diagram of the support leg of an on-board security inspection system according to an exemplary embodiment of the present disclosure is shown.

[0067] According to an exemplary embodiment of the present invention, such as Figure 2-7 As shown in Figure 16, the vehicle 10 also includes at least four support legs 6 mounted on the main body 1. Each support leg includes: a base 61 mounted on the chassis 101; a first retractable mechanism retractably mounted on the base 61; and a second retractable mechanism pivotally mounted at the end of the first retractable mechanism. Each support leg 6 has a retracted state that retracts toward the main body 1 and an extended state that extends toward the ground to support the weight of the vehicle 10. That is, in the extended state, the support leg 6 extends and supports the ground, replacing the vehicle 14 in supporting the weight of the entire vehicle-mounted security inspection system 100. This prevents the vehicle from moving forward or backward. Furthermore, sensors suitable for measuring vehicle posture can be installed on the vehicle to sense whether the vehicle is in a level position. If the sensor detects that the vehicle is not in a level position, the corresponding support leg is controlled to rise or fall, thereby adjusting the vehicle to a level position. This improves the operational stability of the X-ray inspection equipment.

[0068] According to an exemplary embodiment of the present invention, such as Figure 16 As shown, the first telescopic mechanism includes: a first hydraulic cylinder 62 mounted on the base 1, and a first piston rod 63 that reciprocates linearly relative to the first hydraulic cylinder under the drive of the first hydraulic cylinder 62. The second telescopic mechanism includes: a second hydraulic cylinder 64 pivotally mounted about a pivot 66 at the end of the first piston rod 63, and a second piston rod 65 that reciprocates linearly relative to the second hydraulic cylinder under the drive of the second hydraulic cylinder 64. When the X-ray inspection equipment of the vehicle-mounted security inspection system 100 is idle, the support leg 6 is in a retracted state, the first piston rod 63 retracts into the first hydraulic cylinder 62, the second hydraulic cylinder 64 pivots to a state that is horizontal with the first piston rod 63, and the second piston rod 65 retracts into the second hydraulic cylinder; when the X-ray inspection equipment of the vehicle-mounted security inspection system 100 is in operation for detecting a target, the support leg 6 is in an extended state, the first piston rod 63 extends out of the first hydraulic cylinder 62, the second hydraulic cylinder 64 pivots to a state that is perpendicular to the first piston rod 63, and the second piston rod 65 extends out of the second hydraulic cylinder and contacts the ground, thereby lifting the vehicle 10 and causing the wheels 14 to leave the ground.

[0069] exist Figure 4In the scenario shown, if the level sensor 8 detects a deviation in levelness relative to the reference levelness, the controller determines that the vehicle is tilted towards the right front based on this deviation, and then controls... Figure 4 The second piston rod 65 of the upper left support leg 6 extends further, thereby restoring the vehicle to a level position.

[0070] In one exemplary embodiment, based on the center of gravity of the entire vehicle load and the specific shape of the chassis, two support legs located at the front of the vehicle are positioned behind the vehicle's exhaust system and onboard battery, while two support legs located at the rear of the vehicle are positioned near both sides of the horizontal frame used to support the scanning device. The electrical energy for controlling the extension and retraction of the support legs can be provided by the vehicle's battery. Depending on the actual situation, the controller can control at least one of the support legs, up to all support legs, to perform extension and retraction operations, enabling functions such as single-leg inching, one-button automatic leveling of all support legs, one-button automatic lowering of all support legs, and one-button automatic retraction of all support legs. After the vehicle stops and is positioned, the controller initiates the vehicle's leveling function, with all four sets of support legs extending outwards simultaneously. After landing, based on the levelness measured by the level sensor, the extension amount of each of the four sets of support legs is finely adjusted to finally achieve the design requirement of vehicle levelness.

[0071] Figure 9 A simplified schematic diagram of a locking mechanism combined with a slip ring according to an exemplary embodiment of the present disclosure is shown, with the locking mechanism in an unlocked state. Figure 10 It shows Figure 9 An enlarged schematic diagram of section C shown; Figure 11 It shows Figure 9 The diagram shows a simplified illustration of the locking mechanism combined with the slip ring, with the locking mechanism in the locked state. Figure 12 It shows Figure 9 An enlarged schematic diagram of part D shown; Figure 13 Another simplified schematic diagram of a locking mechanism combined with a slip ring according to an exemplary embodiment of the present disclosure is shown, wherein the locking mechanism is in a locked state. Figure 14 It shows Figure 13 Top view; Figure 15 It shows Figure 1 An enlarged schematic diagram of part E shown in Figure 3.

[0072] In one exemplary embodiment, see Figure 9-15 The scanning device 20 further includes a locking mechanism 7, which is adapted to lock the slip ring 4 to prevent the slip ring 4 from rotating relative to the upright frame 3. Thus, when the scanning device 20 is idle, the locking mechanism 7 locks the slip ring 4 to prevent rotation, thereby preventing damage to critical components of the scanning device 20, such as radiation sources or detector arrays, during vehicle 10 movement.

[0073] In one exemplary embodiment, see Figure 9-14 The locking mechanism includes: a drive mechanism 71 mounted on the upright frame 3 via a first mounting base 31; and a contact portion 72 mounted on the drive mechanism 71, which, under the drive of the drive mechanism 71, makes tight contact with the outer ring of the slip ring 4, thereby preventing the slip ring 4 from rotating relative to the upright frame 3. The frictional force generated by the tight contact between the contact portion 72 and the outer ring of the slip ring 4 prevents the slip ring 4 from rotating relative to the upright frame 3. The locking mechanism 71 can lock the slip ring 4 at any time, regardless of the specific position of the slip ring 4, improving the flexibility of slip ring braking.

[0074] In one exemplary embodiment, the contact portion includes: a base 721 connected to the drive mechanism 71; and an elastic pad 722 mounted on the base 721, the elastic pad 722 being configured to elastically contact the outer ring of the slip ring 4 to prevent damage to the slip ring 4 during braking.

[0075] In one exemplary embodiment, see Figure 9-15 The drive mechanism includes: a link 711, a first end of which is pivotally connected to the upright frame 3, and a contact portion 72 pivotally connected between the first and second ends of the link 711; a driver 712 mounted on the upright frame 4; and a drive rod 713 connected between the driver 712 and the second end of the link 711, and configured to reciprocate linearly relative to the driver under the drive of the driver 712 to drive the link 711 to pivot relative to the upright frame 3. In an exemplary embodiment, the first end of the link 711 is pivotally connected to a second mounting base 32 via a pivot 33.

[0076] In one exemplary embodiment, the actuator 712 includes a pneumatic or hydraulic cylinder, and the drive rod 713 includes a piston rod driven by the pneumatic or hydraulic cylinder. In an alternative embodiment, the actuator includes a motor, and the motor drives the connecting rod 711 to rotate relative to the upright frame 3 via a worm gear and a turbine that serves as the drive rod.

[0077] In one exemplary embodiment, see Figure 9-15 The drive mechanism 71 further includes a buffer device 714 installed between the second end of the drive rod 713 and the connecting rod 711. When the locking mechanism 7 is in the locked state, the buffer device 714 can provide a predetermined compressive force to the contact portion 72, so that the contact portion 72 compresses the outer ring of the slip ring 4 with a substantially constant compressive force.

[0078] In one exemplary embodiment, see Figure 12 , 13 15, the buffer device 714 includes: a sleeve 7141, a first end of the sleeve 7141 being provided with a pivot 7146 pivotally connected to the connecting rod 711; and a spring 7142 mounted within the sleeve 7141, one end of the drive rod 713 being inserted into the sleeve 7141 and driving the sleeve 7141 to move by biasing the spring 7142.

[0079] In one exemplary embodiment, the buffer device further includes: an end cap 7143 mounted on the sleeve 7141; and a connecting block 7144 mounted on one end of the drive rod 713, the connecting block 7144 passing through the end cap 7143, inserting into the sleeve 7141, and abutting against the spring 7142. Further, the connecting block 7144 has a radially outwardly projecting flange 7145 located inside the end cap 7143. Thus, the connecting block 7144 abuts against one end of the spring 7142 via the flange 7145, thereby applying a biasing force to the spring 7142; on the other hand, during the release of the locking mechanism 7, the flange 7145 abuts against the end cap 7143, driving the buffer device 714 to move, and then, via the connecting rod 711, driving the contact portion 72 away from the slip ring 4, thereby allowing the slip ring 4 to rotate.

[0080] In one exemplary embodiment, see Figure 10 , 12 -14. A limiting rod 7111 is provided between the connecting rod 711 at the position where the connecting rod connects to the contact portion 72 and the second end. A limiting block 7211 suitable for receiving the limiting rod 7111 is provided on the base 721 of the contact portion 72. As the connecting rod 711 gradually drives the contact portion 72 closer to the slip ring 4, it can prevent the contact portion 72 from rotating, so that the contact portion 72 is stably pressed against the outer ring of the slip ring 4.

[0081] In one exemplary embodiment, see Figure 13-14 The locking mechanism 7 further includes: a first proximity switch 73 mounted on the upright frame 3; and a cooperating switch 74 mounted on the connecting rod 711. The actuator 712, in response to the cooperating switch 74 approaching the first proximity switch 73, stops driving the contact portion 73 to move further toward the slip ring 4. The locking mechanism also includes: a second proximity switch 75 mounted on the upright frame 3. The actuator 712, in response to the cooperating switch 74 approaching the first proximity switch 73, stops driving the contact portion 72 to move further away from the slip ring 4. Thus, the cooperating switch 74, in conjunction with the first proximity switch 73 and the second proximity switch 75, can limit the rotation range of the connecting rod 711.

[0082] In one exemplary embodiment, the first proximity switch 73 and the second proximity switch 75 are electromagnetically coupled to the mating switch 74 via inductive coupling. For example, each of the first proximity switch 73 and the second proximity switch 75 includes a transmitting coil, and the mating switch 74 includes a receiving coil electromagnetically coupled to the transmitting coil. In an alternative embodiment, the first proximity switch 73 and the second proximity switch 75 are electrically connected to the mating switch 74 via electrical contact.

[0083] During the locking operation performed by locking mechanism 7, such as Figure 12 and 13 As shown, the controller of the scanning device 20 of the X-ray inspection equipment controls the driver 712 to drive the drive rod 713 to extend downward. The drive rod 713 drives the connecting rod 711 to rotate clockwise, thereby causing the contact part 72 to approach the outer ring of the slip ring 4. When the controller receives an electrical signal indicating that the mating switch 74 on the connecting rod 711 is close to the first proximity switch 73, the controller stops the driver 712 from continuing to drive the drive rod 713. The contact part 72 remains in the state of pressing the slip ring 4, and the slip ring stops rotating.

[0084] During the operation of releasing the contact 72 of the locking mechanism 7, such as Figure 10 , 12 As shown in Figure 13, the controller of the scanning device 20 of the X-ray inspection equipment controls the driver 712 to drive the drive rod 713 to retract toward the driver. The drive rod 713 drives the connecting rod 711 to rotate counterclockwise, thereby causing the contact part 72 to leave the outer ring of the slip ring 4. When the controller receives an electrical signal indicating that the mating switch 74 on the connecting rod 711 has left the first proximity switch 73, the controller stops the driver 712 from continuing to drive the drive rod 713. The contact part 72 remains in a state away from the slip ring 4, allowing the slip ring to rotate.

[0085] Figure 17 A simplified internal side view of an onboard security inspection system, representing another exemplary embodiment of this disclosure, is shown. Figure 18 It shows Figure 17 The image shows a top view of the vehicle-mounted security inspection system. Figure 19 It shows Figure 17 A three-dimensional schematic diagram of the chassis of the vehicle-mounted security inspection system shown; Figure 20 It shows Figure 9 An enlarged schematic diagram of part F shown.

[0086] In one exemplary embodiment, see Figure 17-20The chassis of the vehicle 10 includes: a horizontally placed main body 1; and a horizontal frame 2' integrally connected to the main body 1. The horizontal frame 2' includes a pair of longitudinal support beams 21' and a pair of transverse support frames 22' arranged along the vehicle's direction of travel. The pair of longitudinal support beams 21' and the pair of transverse support frames 22' define a generally rectangular receiving space 23'. The scanning device 20 includes: an upright frame 3; a slip ring 4 rotatably mounted on the upright frame 3; and two sets of connecting mechanisms 5 respectively mounted between the upper and lower ends on both sides of the upright frame 3. The connecting mechanisms 5 are configured to mount the upright frame 3 on the longitudinal support beams 21' such that at least a portion of the upright frame 3 is lower than the upper surface of the horizontal frame 2'. That is, at least a portion of the lower part of the upright frame 3 is received in the receiving space 23'.

[0087] Each set of the connecting mechanisms 5 includes a horizontal arm 51 extending outward from the outside of the upright frame 3 and supported on the transverse support beam 22. In an exemplary embodiment, each set of the connecting mechanisms 5 further includes an upright arm 52 mounted on the outside of the upright frame 3, with the horizontal arm 51 connected to the lower end of the upright arm 52. This increases the support strength of the horizontal arm 51. Further, each set of the connecting mechanisms 5 includes a plurality of reinforcing ribs 53 connected between the upright arm 52 and the horizontal arm 51 to further increase the support strength of the horizontal arm 51. A backing plate 54 can be pre-welded onto the longitudinal support beam 21 of the horizontal frame 2 to increase the support strength of the longitudinal support beam 21. For example, the horizontal arm 51 of the connecting mechanism 5 can be fixed to the longitudinal support beam 21 using a bolt assembly.

[0088] exist Figure 17-20 In the embodiment shown, the horizontal sensor can be mounted on the upright frame 3 and / or the longitudinal support beam 21.

[0089] According to the vehicle-mounted security inspection system of this disclosure, after the vehicle comes to a complete stop, the controller automatically extends the support legs to the ground to support the weight of the vehicle. The support legs automatically adjust their extension based on feedback from a level sensor, thereby ensuring that the virtual rotation axis of the slip ring of the scanning device (CT equipment) is horizontal. A monitor installed in the driver's cab or vehicle compartment can monitor the levelness of the vehicle or scanning device in real time. If, after adjustment, the measured levelness still does not meet the expected tolerance range, the monitor alerts the operator, indicating that the scanning device has deviated from the permissible level state, and the X-ray inspection equipment must not be started or should be stopped immediately. This prevents damage to the X-ray inspection equipment.

[0090] According to the vehicle-mounted security inspection system of this disclosure, the parking posture of the vehicle can be adjusted by adjusting the extension degree of certain support legs, so that the scanning device is kept in the optimal placement posture with the best measurement accuracy, thereby improving the inspection accuracy of the X-ray inspection equipment. Furthermore, the vehicle-mounted security inspection system of this disclosure can keep the slip ring of the scanning device perpendicular to the horizontal plane in the working state, and the virtual rotation axis of the slip ring parallel to the horizontal plane, reducing the risk of slip ring damage, ensuring that the scanning device does not shake during operation, and improving the service life of the slip ring. In addition, the stability of the radiation source and detector array mounted on the slip ring can be ensured.

[0091] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing any conflict in structure or principle.

[0092] Although this disclosure has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify preferred embodiments of this disclosure and should not be construed as limiting the disclosure. While some embodiments of the inventive concept of this disclosure have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the overall inventive concept, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle-mounted security inspection system (100), comprising: Chassis (101); Multiple support legs (6) are mounted on the chassis, each support leg having a retracted state that retracts toward the chassis and an extended state that extends toward the ground to support the weight of the vehicle. as well as The scanning device (20) includes: An upright frame (3) is mounted on the chassis; and A slip ring (4) is rotatably mounted on the upright frame; The chassis includes: Main body (1); and The horizontal frame (2) is integrally connected to the main body, and the height of the main body from the ground is greater than the height of the horizontal frame from the ground. The scanning device further includes a locking mechanism (7), which is adapted to lock the slip ring to prevent the slip ring from rotating relative to the upright frame. The locking mechanism includes: Drive mechanism (71), mounted on the upright frame; and The contact portion (72) is mounted on the drive mechanism to contact the outer ring of the slip ring under the drive of the drive mechanism, thereby preventing the slip ring from rotating relative to the upright frame. The drive mechanism includes: Link (711), the first end of which is pivotally connected to the upright frame, and the contact portion is pivotally connected between the first end and the second end of the link; The driver (712) is mounted on the upright frame; and A drive rod (713) is connected between the driver and the second end of the link and is configured to reciprocate linearly relative to the driver under the drive of the driver to drive the link to pivot relative to the upright frame.

2. The vehicle-mounted security screening system of claim 1, wherein, The horizontal frame includes a pair of longitudinal support beams (21) and a pair of transverse support beams (22), and the vertical frame is mounted on one of the longitudinal support beams and the transverse support beams.

3. The vehicle-mounted security inspection system according to claim 2 further includes: A level sensor (8) is used to detect the levelness of the scanning device; as well as The controller is adapted to adjust the extension degree of at least one of the plurality of support legs according to the levelness measured by the level sensor, so that the scanning device is maintained in a predetermined posture.

4. The vehicle-mounted security screening system of claim 3, wherein, The horizontal sensor is mounted on one of the longitudinal support beams and the transverse support beams suitable for mounting the upright frame.

5. The vehicle-mounted security screening system of any one of claims 2-4, wherein, The upright frame is mounted on the horizontal frame via two sets of connecting mechanisms. Each of the connecting mechanisms includes a horizontal arm (51) extending outward from the outside of the upright frame and supported on the longitudinal or transverse support beam.

6. The vehicle-mounted security inspection system according to claim 5, wherein, Each of the connecting mechanisms further includes an upright arm (52) mounted on the outside of the upright frame, the horizontal arm being connected to the lower end of the upright arm.

7. The vehicle-mounted security inspection system according to claim 6, wherein, Each of the connecting mechanisms further includes a plurality of reinforcing ribs (53) connecting the upright arm and the horizontal arm.

8. The vehicle-mounted security inspection system according to claim 5, wherein, The two sets of connecting mechanisms are respectively installed between the upper and lower ends of the two sides of the upright frame, such that at least a portion of the upright frame is lower than the upper surface of the horizontal frame.

9. The vehicle-mounted security inspection system according to claim 3, wherein, The horizontal sensor is mounted on the vertical frame.

10. The vehicle-mounted security inspection system according to any one of claims 1-4, 6-9, wherein, Each of the supporting legs includes: The base (61) is mounted on the chassis; A first retractable mechanism is retractably mounted on the base; and The second retractable mechanism is pivotally mounted at the end of the first retractable mechanism.

11. The vehicle-mounted security inspection system according to claim 10, wherein, The first retractable mechanism includes: The first hydraulic cylinder (62) mounted on the base; and The first piston rod (63) moves linearly reciprocally relative to the first hydraulic cylinder under the drive of the first hydraulic cylinder. The second retractable mechanism includes: A second hydraulic cylinder (64) pivotally mounted at the end of the first piston rod; and The second piston rod (65) moves linearly reciprocally relative to the second hydraulic cylinder under the drive of the second hydraulic cylinder.

12. The vehicle-mounted security inspection system according to claim 1, wherein, The contact portion includes: The base (721) is connected to the drive mechanism; and An elastic pad (722) is mounted on the base and configured to elastically contact the outer ring of the slip ring.

13. The vehicle-mounted security inspection system according to claim 12, wherein, The drive mechanism also includes a buffer device (714) installed between the second end of the drive rod and the connecting rod.

14. The vehicle-mounted security inspection system according to claim 13, wherein, The buffer device includes: Sleeve (7141), the first end of which is pivotally connected to the connecting rod; and A spring (7142) is installed inside the sleeve, and one end of the drive rod is inserted into the sleeve and drives the sleeve to move by biasing the spring.

15. The vehicle-mounted security inspection system according to claim 14, wherein, The buffer device further includes: End cap (7143) is installed on the sleeve; A connecting block (7144) is installed at one end of the drive rod, the connecting block passing through the end cap, inserting into the sleeve and abutting against the spring.

16. The vehicle-mounted security inspection system according to claim 15, wherein, The connecting block is provided with a radially outward protruding flange (7145), which is located on the inner side of the end cap.

17. The vehicle-mounted security inspection system according to any one of claims 13-16, wherein, A limiting rod (7111) is provided between the connecting rod and the second end at the position where the connecting rod connects with the contact portion, and a limiting block (7211) is provided on the base to receive the limiting rod.

18. The vehicle-mounted security inspection system according to any one of claims 1, 13-16, wherein, The locking mechanism also includes: A first proximity switch (73) is mounted on the upright frame; and A matching switch (74) is mounted on the linkage, and the driver stops driving the contact portion to move further toward the slip ring in response to the matching switch approaching the first proximity switch.

19. The vehicle-mounted security inspection system according to claim 18, wherein, The locking mechanism also includes: A second proximity switch (75) is mounted on the upright frame. The driver stops driving the contact portion to move further away from the slip ring in response to the mating switch approaching the second proximity switch.

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