CN115144919B - Radiographic inspection equipment and vehicle-mounted security inspection system - Google Patents

Abstract

A radiographic inspection apparatus and a vehicle-mounted security inspection system are provided. The radiographic inspection apparatus includes: a support frame in which an inspection space suitable for inspecting an object is formed; a transfer mechanism including an external transfer mechanism and an internal transfer mechanism disposed in the support frame; the ray transceiver is arranged on the supporting frame to scan and check the target in the checking space; and a first drive mechanism configured to drive rotation between an idle state in which the external transmission mechanism is close to the support frame and an operating state in which the external transmission mechanism is to be away from the support frame. The external transmission mechanism adapted to place the object does not occupy the internal space of the cabinet of the vehicle, thereby allowing the inspection space of the radiographic inspection apparatus to have a sufficient length.

Description

Radiographic inspection equipment and vehicle-mounted security inspection system

Technical Field

Embodiments of the present disclosure relate to a radiographic inspection device, and more particularly to a mobile radiographic inspection device and an on-board security inspection system including such a radiographic inspection device.

Background

On the basis of public safety requirements, in large public places such as large exhibitions, temporary highway checkpoints, side inspection ports, stadiums and the like, a load-bearing security inspection system is often used for non-invasive inspection of objects such as luggage or packages, and a vehicle-mounted, e.g. radiographic inspection device is used for inspecting whether forbidden articles such as drugs and explosives exist in the objects. The object to be examined is usually transported through the examination space of the radiographic examination apparatus by means of a transport structure, and the radiographic emission device emits X-rays into the radiographic tunnel in order to effect an examination of the object.

In existing vehicle-mounted security systems, the radiographic inspection equipment is mounted on the vehicle. The transport mechanism adapted for transporting the object includes an external transport mechanism partially outside the examination space and an internal transport mechanism inside the examination space. In the case where the radiation inspection apparatus is mounted on a vehicle, it is necessary to shorten the length of the inspection space of the radiation inspection apparatus because the external transmission mechanism occupies the internal space of the vehicle and because of the size restriction in the vehicle body width direction. However, due to the radiation protection limitations of the radiation inspection device, too short an inspection space may lead to increased radiation and risk of radiation contamination to the surrounding environment. In order to meet the requirements of the inspection space to be adapted to the vehicle body size and the requirements of radiation protection, it is necessary to shorten the inspection space of the radiation inspection device and arrange a plurality of shielding curtains in the radiation passage. However, excessive or overlapping use of the shield curtain arrangement may result in complicated structure of the ray path, and the light object passing through is blocked by the shield curtain and cannot lift the shield curtain.

Disclosure of Invention

The present disclosure is directed to solving at least one of the above-mentioned problems and disadvantages of the prior art.

According to an embodiment of one aspect of the present disclosure, there is provided a radiation inspection apparatus including: a support frame in which an inspection space suitable for inspecting an object is formed; a transfer mechanism including an external transfer mechanism and an internal transfer mechanism disposed in the support frame; the ray transceiver is arranged on the supporting frame to scan and check the target in the checking space; and a first drive mechanism configured to drive rotation between an idle state in which the external transmission mechanism is close to the support frame and an operating state in which the external transmission mechanism is to be away from the support frame.

According to one embodiment of the present disclosure, the external transmission mechanism includes: the base is provided with a rolling device suitable for conveying the target; a first pivoting mechanism through which one end of the base is rotatably mounted to the support frame; and a second pivoting mechanism mounted on the base, the first driving mechanism driving the external transmission mechanism to rotate relative to the support frame through the second pivoting mechanism.

According to one embodiment of the present disclosure, the first driving mechanism includes: a driver pivotally mounted on the support frame by a third pivot mechanism; and the driving rod is driven by the driver to linearly move, and one end of the driving rod is connected with the base through the second pivot mechanism, so that the external transmission mechanism rotates relative to the supporting frame under the driving of the driver.

According to one embodiment of the present disclosure, the driver comprises a pneumatic or hydraulic cylinder, and the driving rod comprises a piston rod driven by the pneumatic or hydraulic cylinder.

According to an embodiment of the present disclosure, the first driving mechanism further comprises a first limiting device adapted to limit the rotation range of the external transmission mechanism relative to the support frame.

According to one embodiment of the present disclosure, the first limiting device includes: a first proximity switch mounted on an upright frame of the support frame; and a first mating switch mounted on the base, the first drive mechanism stopping driving the external transport mechanism to rotate further toward the support frame in response to the first mating switch approaching the first proximity switch.

According to one embodiment of the present disclosure, the first limiting device includes: and the second proximity switch is arranged on the bottom frame of the supporting frame, and the first driving mechanism responds to the first matching switch to approach the second proximity switch and stops driving the external transmission mechanism to move further away from the supporting frame.

According to one embodiment of the disclosure, the internal transport mechanism further comprises a detection device mounted on a side of the fixed frame remote from the opening of the examination space, the transport mechanism being counter-rotated to drive the target towards the opening in response to the detection device detecting the target carried on the internal transport mechanism.

According to an embodiment of the present disclosure, the radiographic inspection apparatus further includes: an auxiliary transmission mechanism installed at an auxiliary opening of the inspection space communicating with the outside; and a third driving mechanism mounted on the support frame, the third driving mechanism being configured to hold the auxiliary transmission mechanism in an idle state close to the support frame and to drive the auxiliary transmission mechanism to an operating state away from the support frame.

According to one embodiment of the present disclosure, the support frame includes a fixed frame and a movable frame movable relative to the fixed frame. The radiographic inspection apparatus further includes: at least one second driving mechanism mounted on the support frame and configured to drive the moving frame to move relative to the fixed frame to change the length of the examination space.

According to one embodiment of the present disclosure, each of the second driving mechanisms includes: a driving device mounted on the fixed frame; and a moving rod configured to linearly move under the driving of the driving device to drive the moving frame to move relative to the fixed frame.

According to one embodiment of the present disclosure, the driving apparatus includes: a motor mounted on the fixed frame; and a conversion device coupled with an output shaft of the motor, the moving rod being engaged with the conversion device to convert rotation of the conversion device into linear movement of the moving rod.

According to one embodiment of the present disclosure, the conversion device includes: a first gear mounted on an output shaft of the motor; a second gear engaged with the first gear; and a driving shaft mounted on the second gear, the driving shaft being screw-engaged with the moving rod to convert rotation of the driving shaft into linear movement of the moving rod.

According to one embodiment of the present disclosure, the radiographic inspection device further includes at least one set of guide mechanisms mounted between an inner side of the fixed frame and an outer side of the moving frame, and configured to guide the moving frame to move.

According to one embodiment of the present disclosure, there are provided 4 sets of guide mechanisms mounted on upper and lower portions of the upright frames of the moving frame located at both sides of the inspection space, respectively.

According to one embodiment of the present disclosure, each set of guide mechanisms includes: a guide rail installed inside the fixed frame; and at least one roller or slider mounted on the outside of the moving frame.

According to an embodiment of the present disclosure, the radiographic inspection device further comprises a second limiting device adapted to limit the range of movement of the moving frame relative to the fixed frame.

According to one embodiment of the present disclosure, the second limiting device includes: a third proximity switch mounted on the fixed frame; and a second mating switch mounted on the moving frame, the second driving mechanism stopping driving the moving frame to move further away from the fixed frame in response to the second mating switch approaching the third proximity switch.

According to one embodiment of the present disclosure, the second limiting device includes: and the second driving mechanism responds to the second matched switch to approach the fourth proximity switch and stops driving the moving frame to move further towards the fixed frame.

According to one embodiment of the present disclosure, an indication device (7) adapted to indicate an operational state of the operation of the radiographic inspection device is provided on the support frame at a position outside the opening.

According to an embodiment of another aspect of the present disclosure, there is provided a vehicle-mounted security inspection system including: a vehicle comprising a chassis and a carriage; and the radiographic inspection device according to any one of the above embodiments, installed in the vehicle box. The external transmission mechanism is in an idle state and is contracted inside the box body, and is at least partially extended outside the box body during an operating state.

According to one embodiment of the present disclosure, the chassis comprises: a main body portion on which wheels of the vehicle are mounted; and the bearing part is integrally connected with the main body part, and the height of the bearing part from the ground is smaller than that of the main body part from the ground.

Drawings

FIG. 1 illustrates a side view of an in-vehicle security system of an exemplary embodiment of the present disclosure;

FIG. 2 illustrates a top perspective view of the in-vehicle security system illustrated in FIG. 1;

FIG. 3 illustrates a top perspective view of an in-vehicle security system of another exemplary embodiment of the present disclosure;

FIG. 4 illustrates a perspective view of a radiographic inspection device of one exemplary embodiment of the present disclosure;

FIG. 5 shows a simplified schematic diagram of a target examination process of the radiographic examination apparatus shown in FIG. 4;

FIG. 6 illustrates a partial side view of an in-vehicle security system showing an idle state of a mobile frame according to one exemplary embodiment of the present disclosure;

FIG. 7 shows an enlarged schematic view of section B of FIG. 6;

FIG. 8 illustrates another partial side view of the in-vehicle security system illustrated in FIG. 7, showing the operating state of the mobile frame;

FIG. 9 shows an enlarged schematic view of section C of FIG. 8;

FIG. 10 shows an enlarged schematic view of portion D shown in FIG. 9;

FIG. 11 illustrates a simplified front view of a radiographic inspection device of one exemplary embodiment of the present disclosure;

FIG. 12 shows an axial cross-section along line A-A of FIG. 11, showing the moving frame in a contracted state;

FIG. 13 shows an axial cross-section along line A-A of FIG. 11, showing the moving frame in an extended state;

FIG. 14 illustrates a partial cross-sectional view of a second drive mechanism of a radiographic inspection device of one exemplary embodiment of the present disclosure;

FIG. 15 illustrates a partial rear view of an in-vehicle security system of an exemplary embodiment of the present disclosure in an operational state;

FIG. 16 illustrates a partial rear view of an in-vehicle security system of another exemplary embodiment of the present disclosure in an operational state;

FIG. 17 illustrates a cross-sectional view of a vehicle-mounted security system of yet another exemplary embodiment of the present disclosure in an intermediate state;

FIG. 18 illustrates a rear view of another intermediate state of the in-vehicle security system illustrated in FIG. 17;

FIG. 19 illustrates a rear view of the in-vehicle security system of FIG. 17 in an operational state;

FIG. 20 illustrates a partial side view of the in-vehicle security system illustrated in FIG. 19; and

fig. 21 shows a partial top view of the in-vehicle security system shown in fig. 19.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without carrying out the inventive task are within the scope of protection of this disclosure.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in the drawings in order to simplify the drawings. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In the description of the present disclosure, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present disclosure and to simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be configured and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present disclosure; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

In the description of the present disclosure, it should be understood that the use of terms such as "first," "second," etc. for defining components is merely for convenience in distinguishing corresponding components, and the terms are not meant to be construed as limiting the scope of the present disclosure unless otherwise indicated.

According to one general inventive concept of the present disclosure, there is provided a radiographic inspection apparatus comprising: a support frame in which an inspection space suitable for an inspection target is formed, the inspection space having an opening; a transfer mechanism including an external transfer mechanism and an internal transfer mechanism disposed in the support frame; the ray transceiver is arranged on the supporting frame to scan and check the target in the checking space; and a first drive mechanism configured to drive rotation between an idle state in which the external transmission mechanism is close to the support frame and an operating state in which the external transmission mechanism is to be away from the support frame.

According to still another general inventive concept of the present disclosure, there is provided a vehicle-mounted security inspection system, comprising: the vehicle and the above-mentioned radiographic inspection device, including chassis and carriage, the said radiographic inspection device is installed in the said carriage, the said external transmission mechanism is in the inside of contracting in the said box during idle state, stretch out of the outside of the said box at least partially during in the working state.

FIG. 1 illustrates a side view of an in-vehicle security system of an exemplary embodiment of the present disclosure; FIG. 2 illustrates a top perspective view of the in-vehicle security system illustrated in FIG. 1; FIG. 3 illustrates a top perspective view of an in-vehicle security system of another exemplary embodiment of the present disclosure; FIG. 4 illustrates a perspective view of a radiographic inspection device of one exemplary embodiment of the present disclosure; fig. 5 shows a simplified schematic diagram of a target examination procedure of the radiographic examination apparatus shown in fig. 4.

In one exemplary embodiment, referring to fig. 1-3, an in-vehicle security inspection system 1000 is adapted to inspect a target 300 such as a trunk, parcel, handbag, or the like for the presence of contraband such as drugs, explosives in a location such as a station, airport, stadium, mall, or the like where personnel are mobile. The in-vehicle security inspection system 100 includes a vehicle body 200 and a radiographic inspection device 100. The vehicle body 200 includes a chassis 201, a vehicle box 202 mounted on the chassis 201, and wheels 205 mounted on a lower portion of the chassis. The carriage 202 includes an operation room 203 and an inspection room for accommodating the radiographic inspection apparatus 100, which are partitioned by a partition wall 204.

FIG. 6 illustrates a partial side view of an in-vehicle security system showing an idle state of a mobile frame according to one exemplary embodiment of the present disclosure; FIG. 7 shows an enlarged schematic view of section B of FIG. 6; FIG. 8 illustrates another partial side view of the in-vehicle security system illustrated in FIG. 7, showing the operating state of the mobile frame; FIG. 9 shows an enlarged schematic view of section C of FIG. 8; fig. 10 shows an enlarged schematic view of the portion D shown in fig. 9.

In one exemplary embodiment, referring to FIGS. 1-10, a radiographic inspection apparatus 100 includes: a support frame 1, a radiation transceiver 2, a transmission mechanism 3, and at least one first drive mechanism 5. An inspection space 13 adapted to inspect the object 300 is formed in the support frame 1, the inspection space 13 having an opening 131 communicating with the outside. The support frame 1 is provided with a housing made of a shielding material to prevent ray leakage. The transport mechanism 3 is adapted to carry the object 300 for movement through the examination space 13. The transport means 3 comprise an external transport means 31 extending at least partly outside the opening 131 of the examination space 12, and an internal transport means 32 located within the examination space 13. An X-ray transceiving apparatus 2 such as a CT machine is mounted on the support frame 1 to perform X-ray scanning inspection of a target 300 transferred to an inspection space 13 by a transfer mechanism 3. At the opening 131 of the examination space a shielding curtain 8 is mounted which is adapted to shield the radiation in the examination space 13. The first driving mechanism 5 is configured to drive the external transmission mechanism 31 to rotate between an idle state close to the support frame 1 and an operating state to be away from the support frame 1 to transmit the target 300. The radiographic inspection device 100 also includes a controller adapted to receive electrical signals from the various sensors and to control operation of associated equipment of the radiographic inspection device (e.g., CT machine, drive mechanism, etc.). In an exemplary embodiment, referring to fig. 5 and 10-14, the transport mechanism 3 comprises: an external transmission mechanism 31 and an internal transmission mechanism 32 provided in the support frame 1.

1-3, an in-vehicle security system 100 is provided that includes a vehicle 200 and the radiographic inspection device 100 installed within a system 202 of the vehicle. The external transmission mechanism 31 is in a state of contracting inside the casing 202 during the idle state and extending at least partially outside the casing 202 during the operating state. In this way, in the case where the radiographic inspection device 100 carrying the security inspection system 100 is idle, the first driving mechanism 5 keeps the external transmission mechanism 31 in an idle state close to the support frame 1 and is contracted inside the box 202, without affecting the normal running of the vehicle 200; in the case where the radiation inspection device 100 is used to inspect the target 300, the first driving mechanism 5 will drive the external transmission mechanism 31 to rotate to the outside of the case 202 of the vehicle 200, so that the external transmission mechanism 31 is in an operating state of the transmission target 300. In this way, the external transmission mechanism 31 adapted to place the object 300 does not occupy the internal space of the case 202 of the vehicle 200, thereby allowing the inspection space 13 of the radiation inspection apparatus 100 to have a sufficient length, satisfying the length requirement of the radiation inspection apparatus 100 for the inspection space 13, and enabling smooth scanning inspection of the object 300.

In one exemplary embodiment, referring to fig. 6-10, the external transmission mechanism 31 includes: a base 311 serving as a support frame, a first pivot mechanism 312, and a second pivot mechanism 314. One end of the base 311 is rotatably mounted to the support frame 1 by the first pivoting mechanism 312, for example, on the bottom frame of the support frame 1. A belt conveyor 313 is installed on the base 311 to be rotatable in a circulating manner to convey the object 300. A second pivot mechanism 314 is mounted on the base 311, and the first driving mechanism 5 drives the external transmission mechanism 31 to rotate relative to the support frame 1 through the second pivot mechanism 314.

In an exemplary embodiment, the first driving mechanism 5 includes: a driver 51 and a driving lever 52. The driver 51 is pivotally mounted on the support frame 1 by a third pivot mechanism 53. The driving lever 52 is linearly moved by the driver 51, and one end of the driving lever 52 is connected to the base 311 through the second pivoting mechanism 314, so that the external transmission mechanism 31 is rotated relative to the support frame 1 by the driver 52. In an exemplary embodiment, the driver 52 comprises a pneumatic or hydraulic cylinder, and the driving rod 52 comprises a piston rod driven by the pneumatic or hydraulic cylinder.

In an alternative embodiment, the drive comprises a motor and the motor drives the external transmission 31 in rotation with respect to said support frame 1 by means of a worm wheel in combination with a worm screw acting as a drive rod.

In an exemplary embodiment, referring to fig. 6-10, the first driving mechanism further comprises a first limiting device 315, the first limiting device 315 being adapted to limit the rotation range of the external transmission mechanism 31 relative to the support frame 1. Specifically, the first limiting device 315 includes: a first proximity switch 3151 mounted on the upright frame of the support frame 1, and a first mating switch 3152 mounted on the base 311 of the external transmission mechanism 31, the first driving mechanism 314 stopping driving the external transmission mechanism 31 to rotate further toward the support frame 1 in response to the first mating switch 3152 approaching the first proximity switch 3153.

In an exemplary embodiment, the first limiting device 315 further includes a second proximity switch 3153 mounted on the bottom frame of the support frame 1, and the first driving mechanism 5 stops driving the external transmission mechanism 31 to move further away from the support frame 1 in response to the first mating switch 3152 approaching the second proximity switch 3153.

In an exemplary embodiment, the first proximity switch 3151 and the second proximity switch 3153 are electromagnetically coupled to the first mating switch 62 by inductive induction. For example, each of the first proximity switch 3151 and the second proximity switch 3153 includes a transmit coil, and the first mating switch 3152 includes a receive coil electromagnetically coupled to the transmit coil. In an alternative embodiment, the first proximity switch 3151 and the second proximity switch 3153 are electrically connected to the first mating switch 3152 in electrical contact.

In an exemplary embodiment, the height of the second proximity switch 3153 is provided to be adjustable, such that by adjusting the height of the second proximity switch 3153, the tilt angle of the external transmission mechanism 31 with respect to the ground may be adjusted to facilitate placement or removal of the target 300 on the external transmission mechanism 31.

In an exemplary embodiment, referring to fig. 4 and 5, the internal transmission mechanism 32 further includes a detection device 321 mounted at a side of the fixed frame 11 remote from the opening 131 of the inspection space 13. The transfer mechanism 3 rotates in reverse to drive the target 300 to move toward the opening 321 in response to the detection device 321 detecting the target 300 carried on the internal transfer mechanism 32.

In an exemplary embodiment, the detection device 321 includes: a light emitting device mounted on both sides of the support frame 1 perpendicular to the moving direction F of the target 300, and a light receiving device adapted to receive light emitted from the light emitting device, respectively. When the target 300 moves to block the light beam emitted from the light emitting device, the light beam received by the light receiving device is reduced or even no light beam reaches the light receiving device, thereby detecting that the target 300 moves to a predetermined position. The controller controls the transmission mechanism 3 to reversely rotate to drive the target 300 to move toward the opening 131 in a direction opposite to the moving direction F, based on an electric signal generated by the light receiving device indicating that the target reaches a predetermined position.

Referring to fig. 4 and 5, each of the outer and inner transfer mechanisms 31 and 32 may include a tape machine to be cyclically rotated. In the case where the external transmission mechanism 31 is in an operating state, on the external transmission mechanism 31 where the object 300 to be inspected is placed, the external transmission mechanism 31 is transmitted to the internal transmission mechanism 32 in the moving direction F; after being inspected in the inspection space 13, if the detection device 321 detects the object 300, the object 300 is conveyed by the internal conveying mechanism 32 to the external conveying mechanism 31 serving as an output portion, completing the scanning inspection process of the object 300. That is, the object 300 enters the inspection space 13 through the opening 131 in the transport mechanism 3, and moves outside the inspection space 13 through the opening 131 on the transport mechanism 3 after scanning inspection.

In an exemplary embodiment, as shown in fig. 2 and 3, an auxiliary opening and output transport 33 is provided on the side of the examination space 13 opposite the opening 131. In this embodiment, the object 300 enters the examination space from the opening 131, and after a scanning examination, the radiation examination apparatus 100 is removed from the output transport mechanism 33 via the auxiliary opening.

In one exemplary embodiment, the radiographic inspection apparatus 100 further includes: an auxiliary transmission mechanism 8 mounted at an auxiliary opening of the inspection space 13 communicating with the outside, and a third driving mechanism mounted on the support frame 1, the third driving mechanism being configured to hold the auxiliary transmission mechanism in an idle state close to the support frame and to drive the auxiliary transmission mechanism to an operating state away from the support frame. In an exemplary embodiment, the third driving mechanism has substantially the same structure as the first driving mechanism, and will not be described herein.

In an exemplary embodiment, see fig. 4, an indication means 7 adapted to indicate the operational status of the radiation examination apparatus 100 is provided on the support frame 1 of the radiation examination apparatus 100 at a position outside said opening 131.

FIG. 11 illustrates a simplified front view of a radiographic inspection device of one exemplary embodiment of the present disclosure; FIG. 12 shows an axial cross-section along line A-A of FIG. 11, showing the moving frame in a contracted state; fig. 13 shows an axial sectional view taken along the line A-A of fig. 11, showing the moving frame in an extended state.

In an exemplary embodiment, referring to fig. 4 and 11-13, the support frame includes a fixed frame 11 and a moving frame 12 movable with respect to the fixed frame, and each of the fixed frame 11 and the moving frame 12 may include a plurality of upright frames at both sides and a plurality of top frames at an upper portion of the upright frames. The upright frame is mounted on the bottom frame. The radiographic inspection apparatus 100 further includes: at least one second driving mechanism 4, the second driving mechanism 4 being mounted on the support frame 1 and configured to drive the moving frame 12 to move relative to the fixed frame 11 to change the length of the examination space 13.

Referring to fig. 1-4 and 11-13, the second driving mechanism 4 of the radiation inspection device 100 drives the moving frame 12 to move to the outside of the case 202 of the vehicle 200. In this way, when the radiographic inspection device 100 carrying the security inspection system 1000 is idle, the moving frame 12 is retracted inside the box 202, without affecting the normal running of the vehicle 200; in the case where the radiation inspection apparatus 100 is used to inspect the target 300, the first driving mechanism 4 moves the moving frame 12 to the outside of the case 202 of the vehicle 200, thereby extending the length of the inspection space 13, satisfying the length requirement of the radiation inspection apparatus 100 for the inspection space 13, and enabling smooth scanning inspection of the target 300.

Fig. 14 illustrates a partial cross-sectional view of a second drive mechanism of a radiographic inspection device of one exemplary embodiment of the present disclosure.

In an exemplary embodiment, referring to fig. 11 to 14, each of the second driving mechanisms 4 includes: a driving means mounted on the fixed frame 11, and a moving lever 43, the moving lever 43 being configured to move linearly under the driving of the driving means to drive the moving frame 12 to move relative to the fixed frame 11 such that the moving frame 12 protrudes out of the fixed frame 11, thereby extending the length of the examination space 13 of the radiographic examination apparatus 100.

In an exemplary embodiment, the driving apparatus includes: a motor 41 mounted on the fixed frame 11, and a conversion device 42 coupled to an output shaft of the motor 41, the moving lever 43 being engaged with the conversion device 42 to convert rotation of the conversion device 42 into linear movement of the moving lever 43. Further, the conversion device 42 includes: a first gear 421 mounted on an output shaft of the motor 41, a second gear 422 engaged with the first gear 421, and a driving shaft 423 mounted on the second gear 422, the driving shaft 423 being screw-engaged with the moving rod 43 to convert rotation of the driving shaft 423 into linear movement of the moving rod 43. Thus, when the motor 41 is started, the output shaft of the motor 41 drives the first gear 421 to rotate, and the first gear 421 drives the second gear 422 and the driving shaft 423 to rotate. The driving shaft 423 is screw-engaged with the moving rod 43 to drive the linear movement of the moving rod 43.

In an exemplary embodiment, referring to fig. 11-14, the radiographic inspection device 100 further includes at least one set of guide mechanisms 9, the guide mechanisms 9 being mounted between the inside of the stationary frame 11 and the outside of the moving frame 12 and configured to guide the movement of the moving frame 12. In detail, referring to fig. 6, 4 sets of guide mechanisms 9 are provided which are respectively installed at upper and lower portions of the upright frame of the moving frame 12 located at both sides of the inspection space 13. Each set of guide mechanisms includes: a guide rail installed inside the fixed frame 11; and at least one roller or slider mounted on the outside of the moving frame 12. The rollers or the sliders are combined with the guide rails so that the moving frame 12 can be smoothly reciprocated linearly with respect to the fixed frame by the driving of the second driving mechanism 4.

In an exemplary embodiment, referring to fig. 1, a plurality of rollers 121 are installed at a lower portion of the moving frame 12 to further guide the moving frame 12 to smoothly move.

In an exemplary embodiment, referring to fig. 11-14, the radiographic inspection device 100 further comprises a second limiting device 6, said second limiting device 6 being adapted to limit the range of movement of said mobile frame 12 with respect to said fixed frame 11. Specifically, the second limiting device 6 includes a third proximity switch 61 mounted on the fixed frame 11, and a second mating switch 62 mounted on the movable frame 12, and the second driving mechanism 4 stops driving the movable frame 12 to move further away from the fixed frame 11 in response to the second mating switch 62 approaching the third proximity switch 61.

In an exemplary embodiment, the second limiting device 6 further includes a fourth proximity switch 63 mounted on the fixed frame 11, and the second driving mechanism 4 stops driving the moving frame 12 to move further toward the fixed frame 11 in response to the second mating switch 62 approaching the fourth proximity switch 63. It will be appreciated that the distance between the third proximity switch 61 and the fourth proximity switch 62 is the maximum range of movement of the moving frame 12.

In an exemplary embodiment, the third proximity switch 61 and the fourth proximity switch 63 are electromagnetically coupled to the second mating switch 62 by means of inductive induction. For example, each of the third proximity switch 61 and the fourth proximity switch 63 includes a transmitting coil, and the second mating switch 62 includes a receiving coil electromagnetically coupled to the transmitting coil. In an alternative embodiment, the third and fourth proximity switches 61, 63 are electrically connected to the second mating switch 62 in electrical contact.

In an exemplary embodiment, referring to fig. 1-3 and 11-14, the moving frame 12 has a contracted state contracted into the fixed frame 11 and an extended state extended out of the fixed frame 11. With the radiographic inspection device 100 idle, the moving frame 12 is in a contracted state; in the operating condition of the radiographic inspection apparatus 100 for inspecting the target 300, the moving frame 12 is in an extended state extending out of the case 202.

It will be appreciated by those skilled in the art that the radiation inspection device may be configured to rotate the external transmission mechanism 31 from the idle state to the operating state after the movable frame 12 is extended from the fixed frame 11, as desired; it is also possible to arrange to rotate the external transmission mechanism 31 from the idle state to the operating state before the moving frame 12 is extended from the fixed frame 11.

Fig. 15 illustrates a partial rear view of an in-vehicle security system of an exemplary embodiment of the present disclosure in an operational state.

In an exemplary embodiment, referring to fig. 15, the radiographic inspection device includes a moving frame 12 that can protrude from the case of the vehicle 200, and an external transmission mechanism 31 that rotates to an operating state and protrudes from the case. An indicating device 7' adapted to indicate the operating state of the operation of the radiographic inspection device is mounted on the side of the mobile frame 12.

Fig. 16 illustrates a partial rear view of an in-vehicle security system of another exemplary embodiment of the present disclosure in an operational state.

In an exemplary embodiment, referring to fig. 16, the radiographic inspection device includes a moving frame 12 that can protrude from a case of the vehicle 200, an external transmission mechanism 31 that rotates to an operating state and protrudes from the case, and a first auxiliary support frame 34 that is rotatably connected to the external transmission mechanism through a first pivot 341. The first auxiliary supporting frame 34 can be folded onto the external transmission mechanism 31 when the external transmission mechanism 31 is in an idle state; and is unfolded to be located in the same plane as the external transmission mechanism 31 when the external transmission mechanism 31 is in an operating state, so that the length of the external transmission mechanism is extended, and more targets can be placed conveniently.

FIG. 17 illustrates a cross-sectional view of an on-board security system of yet another exemplary embodiment of the present disclosure in an idle state; FIG. 18 illustrates a rear view of an intermediate state of the in-vehicle security system illustrated in FIG. 17; FIG. 19 illustrates a rear view of the in-vehicle security system of FIG. 17 in an operational state; FIG. 20 illustrates a partial side view of the in-vehicle security system illustrated in FIG. 19; and FIG. 21 illustrates a partial top view of the in-vehicle security system illustrated in FIG. 19.

In an exemplary embodiment, referring to fig. 17 to 21, the radiographic inspection device includes a moving frame 12 that can protrude from a cabinet of the vehicle 200, an external transmission mechanism 31 that rotates to an operating state and protrudes from the cabinet, a first auxiliary support frame 34 rotatably connected to the external transmission mechanism through a first pivot 341, and a second auxiliary support frame 35 rotatably connected to the first auxiliary support frame 34 through a second pivot 351. When the external transmission mechanism 31 is in the idle state, as shown in fig. 17, the first auxiliary supporting frame 34 may be folded onto the external transmission mechanism 31, and the second auxiliary supporting frame 35 may be folded onto the first auxiliary supporting frame 34; as shown in fig. 18, in the case where the first auxiliary supporting frame and the second auxiliary supporting frame are in the folded state, the external transmission mechanism 31 is rotated to protrude from the case 202 of the vehicle 200 by the first driving mechanism 5; thereafter, as illustrated in fig. 19 and 21, the first auxiliary supporting frame, the second auxiliary supporting frame, and the supporting legs are sequentially unfolded, thereby completing the preparatory operation before the examination of the radiographic examination apparatus.

When the external transmission mechanism 31 is in the working state, the first auxiliary supporting frame 34 and the second auxiliary supporting frame 35 are unfolded to be located in the same plane with the external transmission mechanism 31, so that the length of the external transmission mechanism is further extended, and more targets can be placed conveniently. Further, a foldable support leg 352 is installed on the second auxiliary supporting frame 35, and when the external transmission mechanism 3 is in an operating state, the support leg 352 is unfolded from the second auxiliary supporting frame and supported on the ground, thereby increasing the supporting force and stability of the first auxiliary supporting frame and the second auxiliary supporting frame to place more objects to be inspected.

In an exemplary embodiment, referring to fig. 1, 6, 8 and 20, the chassis 201 includes a main body 2011 and a carrier 2012, the wheel 205 of the vehicle 200 is mounted on the main body 2011, the carrier 2012 is integrally connected with the main body 2011, and the height of the carrier 2012 from the ground is smaller than the height of the main body 2011 from the ground. In this way, the maximum height of the vehicle-mounted security inspection system 1000 can be kept unchanged, the height of the radiographic inspection equipment 100 from the ground can be reduced, and people can conveniently place and take targets to and from the radiographic inspection equipment.

Those skilled in the art will appreciate that the embodiments described above are exemplary and that modifications may be made by those skilled in the art, and that the structures described in the various embodiments may be freely combined without conflict in terms of structure or principle.

Although the present disclosure has been described with reference to the accompanying drawings, the examples disclosed in the drawings are intended to illustrate preferred embodiments of the present disclosure and are not to be construed as limiting the present disclosure. Although a few embodiments of the present disclosed inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

Claims (19)

1. A radiation inspection device (100) adapted to be mounted in a housing of a vehicle, and comprising:

-a support frame (1) provided with a housing made of shielding material, in which an examination space (13) suitable for an examination object (300) is formed, the support frame comprising a fixed frame (11) and a movable frame (12) movable relative to the fixed frame, the examination space (13) having two opposite openings (131) communicating with the outside, two shielding curtains (8) suitable for shielding X-rays in the examination space (13) being mounted at the two openings of the examination space, respectively, such that the examination space is defined between the two shielding curtains;

a transfer mechanism (3) comprising an external transfer mechanism (31) and an internal transfer mechanism (32) provided in the support frame;

a radiation transceiver (2) mounted on the support frame for performing an X-ray scanning examination of the object in the examination space;

a first driving mechanism (5) configured to drive rotation between an idle state in which the external transmission mechanism is close to the support frame and an operating state in which the external transmission mechanism is to be far from the support frame; and

at least one second driving mechanism (4) mounted on the support frame and configured to move the moving frame to the outside of the cabinet of the vehicle to extend the length of the inspection space in a case where the radiographic inspection apparatus is used to inspect a target.

2. The radiographic inspection device of claim 1, wherein the external transmission mechanism comprises:

a base (311) on which a rolling device suitable for transferring the object is provided;

a first pivot mechanism (312) by which one end of the base is rotatably mounted to the support frame; and

a second pivot mechanism (314) mounted on the base, the first drive mechanism driving the external transmission mechanism to rotate relative to the support frame via the second pivot mechanism.

3. The radiographic inspection device of claim 2, wherein the first drive mechanism comprises:

a driver (51) pivotally mounted on the support frame by a third pivot mechanism (53); and

and the driving rod (52) is driven by the driver to linearly move, and one end of the driving rod is connected with the base through the second pivot mechanism, so that the external transmission mechanism rotates relative to the supporting frame under the driving of the driver.

4. A radiographic inspection apparatus according to claim 3, wherein the driver comprises a pneumatic or hydraulic cylinder and the drive rod comprises a piston rod driven by the pneumatic or hydraulic cylinder.

5. The radiographic inspection device according to claim 2, wherein the first drive mechanism further comprises a first stop means (315) adapted to limit the range of rotation of the external transmission mechanism relative to the support frame.

6. The radiographic inspection device of claim 5, wherein the first stop means comprises:

a first proximity switch (3151) mounted on an upright frame of the support frame; and

a first mating switch (3152) mounted on the base, the first drive mechanism stopping driving the external transport mechanism to rotate further toward the support frame in response to the first mating switch approaching the first proximity switch.

7. The radiographic inspection device of claim 6, wherein the first stop means comprises:

a second proximity switch (3153) mounted on the bottom frame of the support frame, the first drive mechanism ceasing to drive the external transport mechanism further away from the support frame in response to the first mating switch approaching the second proximity switch.

8. The radiographic inspection device of any one of claims 1-7, further comprising:

an auxiliary transmission mechanism (8) installed at an auxiliary opening of the inspection space communicating with the outside; and

and a third driving mechanism mounted on the support frame, the third driving mechanism being configured to hold the auxiliary transmission mechanism in an idle state close to the support frame and to drive the auxiliary transmission mechanism to an operating state away from the support frame.

9. The radiographic inspection apparatus according to any one of claims 1 to 7, wherein each of the second drive mechanisms includes:

a driving device mounted on the fixed frame; and

and a moving rod (43) configured to linearly move under the driving of the driving device to drive the moving frame to move relative to the fixed frame.

10. The radiographic inspection apparatus of claim 9 wherein the drive means comprises:

a motor (41) mounted on the fixed frame; and

and the conversion device (42) is coupled with the output shaft of the motor, and the moving rod is meshed with the conversion device so as to convert the rotation of the conversion device into the linear movement of the moving rod.

11. The radiographic inspection apparatus of claim 9 wherein the conversion means comprises:

a first gear (421) mounted on an output shaft of the motor;

a second gear (422) meshed with the first gear; and

and a driving shaft (423) mounted on the second gear, the driving shaft being screw-engaged with the moving rod to convert rotation of the driving shaft into linear movement of the moving rod.

12. The radiographic inspection device according to any one of claims 1-7, further comprising at least one set of guide mechanisms (9) mounted between an inner side of the stationary frame and an outer side of the moving frame and configured to guide movement of the moving frame.

13. The radiographic inspection apparatus according to claim 12, wherein 4 sets of guide mechanisms are provided that are mounted on upper and lower portions of the upright frame of the moving frame on both sides of the inspection space, respectively.

14. The radiographic inspection device of claim 12, wherein each set of guide mechanisms includes:

a guide rail installed inside the fixed frame; and

at least one roller or slider mounted on the outside of the moving frame.

15. The radiographic inspection device according to any one of claims 1-7, further comprising a second limiting device (6) adapted to limit the range of movement of the moving frame relative to the fixed frame.

16. The radiographic inspection apparatus of claim 15 wherein the second stop means comprises:

a third proximity switch (61) mounted on the fixed frame; and

and a second matched switch (62) is arranged on the movable frame, and the second driving mechanism responds to the second matched switch approaching the third approaching switch to stop driving the movable frame to move further away from the fixed frame.

17. The radiographic inspection apparatus of claim 16 wherein the second stop means comprises:

and a fourth proximity switch (63) mounted on the fixed frame, wherein the second driving mechanism stops driving the moving frame to move further toward the fixed frame in response to the second mating switch approaching the fourth proximity switch.

18. An in-vehicle security system, comprising:

a vehicle (200) comprising a chassis (201) and a compartment (202); and

the radiographic inspection apparatus according to any one of claims 1 to 17, mounted in the vehicle box,

wherein the external transmission mechanism is in an idle state and is contracted inside the box body, and is at least partially extended outside the box body during an operating state.

19. The in-vehicle security system of claim 18, wherein the chassis comprises:

a main body portion (2011) on which wheels of the vehicle are mounted; and

and the bearing part (2012) is integrally connected with the main body part, and the height of the bearing part from the ground is smaller than that of the main body part.