CN115144923B - Radiographic inspection equipment and vehicle-mounted security inspection systems - Google Patents

Abstract

A radiographic inspection apparatus and a vehicle-mounted security inspection system are provided. A radiographic inspection apparatus includes a support frame, a transmission mechanism, and a first drive mechanism. An examination space suitable for an examination object is formed in the support frame. The transmission mechanism comprises: an external transmission mechanism; an internal transmission mechanism disposed in the support frame; and an auxiliary supporting frame having a stacked state stacked on the external transmission mechanism and an extended state extended from the external transmission mechanism. And a first driving mechanism configured to drive the external transmission mechanism to rotate between an idle state close to the support frame and an operating state to be away from the support frame. The inspection space of the radiation inspection device is allowed to have enough length, and the length requirement of the radiation inspection device on the inspection space is met.

Description

Radiographic inspection equipment and vehicle-mounted security inspection systems

Technical field

Embodiments of the present disclosure relate to a radiographic inspection device, and in particular to a movable radiographic inspection device and a vehicle-mounted security inspection system including such a radiographic inspection device.

Background technique

Based on the needs of public safety, load-bearing security inspection systems are often used in large public places such as large exhibitions, temporary highway checkpoints, border inspection ports, and stadiums to conduct non-intrusive inspections of targets such as suitcases or packages. Radiographic inspection equipment on the vehicle checks whether there are prohibited items such as drugs and explosives in the target. The target to be inspected usually passes through the inspection space of the radiographic inspection equipment by means of a transport structure, and the ray emitting device emits X-rays into the ray channel to achieve inspection of the target.

In existing vehicle-mounted security inspection systems, radiographic inspection equipment is installed on the vehicle. Transport mechanisms suitable for transporting objects include external transport mechanisms located partially outside the examination space and internal transport mechanisms located inside the examination space. In the case where the radiographic inspection equipment is installed on a vehicle, since the external transmission mechanism occupies the internal space of the vehicle and due to size restrictions in the width direction of the vehicle body, the length of the inspection space of the radiographic inspection equipment needs to be shortened. However, due to the limitations of radiation protection of radiographic inspection equipment, too short an inspection space will lead to increased radiation and the risk of radioactive contamination to the peripheral environment. In order to meet the requirements that the inspection space should adapt to the size of the car body and the requirements for radiation protection, it is necessary to shorten the inspection space of the radiographic inspection equipment and arrange multiple shielding curtains in the radiographic channel. However, too many shielding curtains or overlapping use will complicate the structure of the ray channel, and lighter targets will be blocked by the shielding curtains when passing through and cannot open the shielding curtains.

Contents of the invention

The present disclosure aims to solve at least one aspect of the above-mentioned problems and deficiencies existing in the prior art.

According to an embodiment of one aspect of the present disclosure, a radiographic inspection device is provided, including a support frame, a transmission mechanism, and a first driving mechanism. An inspection space suitable for inspection targets is formed within the support frame. The transmission mechanism includes: an external transmission mechanism; an internal transmission mechanism provided in the support frame; and an auxiliary support frame having a stacked state stacked on the external transmission mechanism and an extended state extending from the external transmission mechanism . A first driving mechanism configured to drive the external transmission mechanism to rotate between an idle state close to the support frame and a working state away from the support frame.

According to an embodiment of the present disclosure, the auxiliary support frame includes: a first auxiliary support frame, the first auxiliary support frame is deployably stacked on the external support mechanism.

According to an embodiment of the present disclosure, the auxiliary support frame further includes: a second auxiliary support frame, the second auxiliary support frame is deployably stacked on the first auxiliary support frame.

According to an embodiment of the present disclosure, the auxiliary support frame further includes: at least one set of legs, and the at least one set of legs is deployably stacked on the second auxiliary support frame.

According to an embodiment of the present disclosure, the second auxiliary support frame is placed substantially horizontally, and the height of the second auxiliary support frame from the ground is less than the minimum height of the external transmission mechanism from the ground.

According to an embodiment of the present disclosure, the external transmission mechanism includes: a base, a rolling device suitable for transmitting the target is provided on the base, and the auxiliary support frame is pivotably connected to the base. a first end; a first pivot mechanism by which a second end of the base opposite the first end is rotatably mounted to the support frame; and a second pivot mechanism , installed on the base, the first driving mechanism drives the external transmission mechanism to rotate relative to the support frame through the second pivot mechanism.

According to an embodiment of the present disclosure, the first driving mechanism includes: a driver pivotably mounted on the support frame through a third pivot mechanism; and a driving rod at the It moves linearly under the driving of the driver, and one end of the driving rod is connected to the base through the second pivot mechanism, so that the external transmission mechanism rotates relative to the support frame under the driving of the driver.

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

According to an embodiment of the present disclosure, the first limiting device includes: a first proximity switch installed on the upright frame of the support frame; and a first cooperating switch installed on the base, the In response to the first cooperation switch approaching the first proximity switch, the first driving mechanism stops driving the external transmission mechanism to further rotate toward the support frame.

According to an embodiment of the present disclosure, the first limiting device includes: a second proximity switch installed on the bottom frame of the support frame, and the first driving mechanism approaches the first matching switch in response to the first matching switch. The second proximity switch stops driving the external transmission mechanism to move further away from the support frame.

According to an embodiment of the present disclosure, the internal transmission mechanism further includes a detection device installed on an opening side of the fixed frame away from the inspection space, and the transmission mechanism responds to the detection device detecting that the The target on the internal transmission mechanism reversely rotates to drive the target toward the opening.

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

According to an 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 equipment further includes: at least one second driving mechanism installed on the support frame and configured to drive the moving frame to move relative to the fixed frame to change the length of the inspection space.

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

According to an embodiment of the present disclosure, the driving device includes: a motor installed on the fixed frame; and a conversion device coupled with the output shaft of the motor, and the moving rod engages with the conversion device to The rotation of the conversion device is converted into linear movement of the moving rod.

According to an embodiment of the present disclosure, the conversion device includes: a first gear installed on the output shaft of the motor; a second gear meshing with the first gear; and a drive shaft installed on the third gear. On the second gear, the driving shaft is threadedly engaged with the moving rod to convert the rotation of the driving shaft into linear movement of the moving rod.

According to an embodiment of the present disclosure, the radiographic inspection equipment further includes at least one set of guide mechanisms installed between the inner side of the fixed frame and the outer side of the movable frame and configured to guide the movement of the movable frame.

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

According to an embodiment of the present disclosure, the second limiting device includes: a third proximity switch installed on the fixed frame; and a second cooperating switch installed on the moving frame, and the second driving The mechanism stops driving the moving frame to move further away from the fixed frame in response to the second cooperation switch approaching the third proximity switch.

According to an embodiment of the present disclosure, the second limiting device includes: a fourth proximity switch installed on the fixed frame, and the second driving mechanism approaches the fourth proximity switch in response to the second cooperating switch. Proximity switch to stop driving the moving frame to move further toward the fixed frame.

According to another embodiment of the present disclosure, a vehicle-mounted security inspection system is provided, including: a vehicle, including a chassis and a trunk; and the radiographic inspection equipment of any of the above embodiments installed in the trunk. The external transmission mechanism is retracted inside the box during the idle state, and the auxiliary support frame is stacked on the external transmission mechanism; and at least partially extends outside the box during the working state. , the auxiliary support frame is deployed from the external transmission mechanism.

According to an embodiment of the present disclosure, the chassis includes: a main body part on which the wheels of the vehicle are installed; and a load-bearing part integrally connected with the main body part and the distance between the load-bearing part and the ground is The height is smaller than the height of the main body from the ground.

Description of drawings

Figure 1 shows a side view of a vehicle-mounted security inspection system according to an exemplary embodiment of the present disclosure;

Figure 2 shows a top perspective view of the vehicle-mounted security inspection system shown in Figure 1;

3 shows a top perspective view of a vehicle-mounted security inspection system according to another exemplary embodiment of the present disclosure;

Figure 4 shows a perspective view of a radiographic inspection device according to an exemplary embodiment of the present disclosure;

Figure 5 shows a simple schematic diagram of the target inspection process of the radiographic inspection equipment shown in Figure 4;

Figure 6 shows a partial side view of the vehicle-mounted security inspection system according to an exemplary embodiment of the present disclosure, showing the idle state of the mobile frame;

Figure 7 shows an enlarged schematic diagram of part B shown in Figure 6;

Figure 8 shows another partial side view of the vehicle-mounted security inspection system shown in Figure 7, which shows the working state of the mobile frame;

Figure 9 shows an enlarged schematic diagram of part C shown in Figure 8;

Figure 10 shows an enlarged schematic diagram of part D shown in Figure 9;

Figure 11 shows a simplified front view of a radiographic inspection device according to an exemplary embodiment of the present disclosure;

Figure 12 shows an axial cross-sectional view along line A-A of Figure 11, showing the retracted state of the mobile frame;

Figure 13 shows an axial cross-sectional view along line A-A of Figure 11, showing the extended state of the mobile frame;

14 shows a partial cross-sectional view of the second driving mechanism of the radiographic inspection apparatus according to an exemplary embodiment of the present disclosure;

Figure 15 shows a cross-sectional view of the vehicle-mounted security inspection system in an intermediate state according to an exemplary embodiment of the present disclosure;

Figure 16 shows a rear view of another intermediate state of the vehicle-mounted security inspection system shown in Figure 15;

Figure 17 shows a rear view of the vehicle-mounted security inspection system shown in Figure 15 when it is in working condition;

Figure 18 shows a partial side view of the vehicle-mounted security inspection system shown in Figure 17;

Figure 19 shows a partial top view of the vehicle-mounted security inspection system shown in Figure 17; and

FIG. 20 shows a rear view of the vehicle-mounted security inspection system in a working state according to another exemplary embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all of the 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 obtained by those of ordinary skill in the art without performing creative work fall within the scope of protection of this disclosure.

In the following detailed description, for convenience of explanation, numerous specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are illustrated in order to simplify the drawings. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the authorized specification.

In the description of the present disclosure, it should be understood that the orientation indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom", etc. Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present disclosure and simplifying the description. Without explanation to the contrary, these directional words do not indicate and imply the referred devices or elements. It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as limiting the scope of the present disclosure; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

In the description of the present disclosure, it should be understood that the use of words such as "first" and "second" to define components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above words have no special meaning. meaning and therefore cannot be construed as limiting the scope of the present disclosure.

According to a general inventive concept of the present disclosure, a radiographic inspection equipment is provided, including: a support frame forming an inspection space suitable for inspection targets; a transmission mechanism; and a radiographic transceiver device installed on the support. on the frame to scan and inspect targets in the inspection space; and a first driving mechanism configured to drive the external transmission mechanism close to the idle state of the support frame and to move away from the The support frame rotates between working states. A transmission mechanism, including: an external transmission mechanism; an internal transmission mechanism provided in the support frame; and an auxiliary support frame, the auxiliary support frame having a stacked state stacked on the external transmission mechanism and from the outside The extended state of the transmission mechanism.

According to yet another general inventive concept of the present disclosure, a vehicle-mounted security inspection system is provided, including: a vehicle and the above-mentioned radiographic inspection equipment, which includes a chassis and a carriage, and the radiographic inspection equipment is installed in the carriage. The external transmission mechanism is retracted inside the box during the idle state, and the auxiliary support frame is stacked on the external transmission mechanism; and at least partially extends outside the box during the working state. , the auxiliary support frame is deployed from the external transmission mechanism.

FIG. 1 shows a side view of a vehicle-mounted security inspection system according to an exemplary embodiment of the present disclosure; FIG. 2 shows a top perspective view of the vehicle-mounted security inspection system shown in FIG. 1 ; FIG. 3 shows another embodiment of the present disclosure. A top perspective view of a vehicle-mounted security inspection system according to an exemplary embodiment; Figure 4 shows a three-dimensional schematic view of a radiographic inspection device according to an exemplary embodiment of the present disclosure; Figure 5 illustrates the radiographic inspection shown in Figure 4 A simplified diagram of the target inspection process for equipment.

In an exemplary embodiment, referring to Figures 1-3, the vehicle-mounted security inspection system 1000 is suitable for inspecting objects 300 such as suitcases, packages, and handbags in places with high mobility of people, such as stations, airports, stadiums, shopping malls, etc. Are there any prohibited items such as drugs and explosives? The vehicle-mounted security inspection system 100 includes a vehicle body 200 and a radiographic inspection device 100 . The vehicle body 200 includes a chassis 201, a carriage 202 installed on the chassis 201, and wheels 205 installed on the lower part of the chassis. The carriage 202 includes an operation room 203 separated by a partition wall 204 and an inspection room for accommodating the radiographic inspection apparatus 100 .

Figure 6 shows a partial side view of the vehicle-mounted security inspection system according to an exemplary embodiment of the present disclosure, showing the idle state of the mobile frame; Figure 7 shows an enlarged schematic diagram of part B shown in Figure 6; Figure 8 shows another partial side view of the vehicle-mounted security inspection system shown in Figure 7, which shows the working state of the mobile frame; Figure 9 shows an enlarged schematic diagram of part C shown in Figure 8; Figure 10 An enlarged schematic view of part D shown in Figure 9 is shown.

In an exemplary embodiment, referring to FIGS. 1-10 , the radiographic inspection equipment 100 includes: a support frame 1 , a radiographic transceiver device 2 , a transmission mechanism 3 , and at least one first driving mechanism 5 . An inspection space 13 suitable for the inspection target 300 is formed in the support frame 1 , and the inspection space 13 has an opening 131 communicating with the outside. The support frame 1 is provided with a shell made of shielding material to prevent radiation leakage. The transport mechanism 3 is adapted to carry the target 300 to move through the inspection space 13 . The transport mechanism 3 includes an external transport mechanism 31 extending at least partially outside the opening 131 of the inspection space 12 , an internal transport mechanism 32 located within the examination space 13 , and an auxiliary support frame having a structure stacked on the a stacked state on the external transmission mechanism 31 and an extended state extending from the external transmission mechanism 31 . An X-ray transceiver device 2 such as a CT machine is installed on the support frame 1 to perform X-ray scanning inspection on the target 300 transmitted to the inspection space 13 by the transmission mechanism 3 . A shielding curtain 8 suitable for shielding radiation in the inspection space 13 is installed at the opening 131 of the inspection space. 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 a working state away from the support frame 1 to transport the target 300 . The radiographic inspection equipment 100 also includes a controller adapted to receive electrical signals from various sensors and control the operation of related devices (such as CT machines, driving mechanisms, etc.) of the radiographic inspection equipment. In an exemplary embodiment, referring to FIGS. 5 and 10-14 , the transmission mechanism 3 includes: an external transmission mechanism 31 and an internal transmission mechanism 32 provided in the support frame 1 .

According to an exemplary embodiment of the present disclosure, as shown in FIGS. 1-3 , a vehicle-mounted security inspection system 100 is provided, including a vehicle 200 and the radiographic inspection device 100 installed in a system 202 of the vehicle. The external transmission mechanism 31 is retracted inside the box 202 during the idle state, and the auxiliary support frame is stacked on the external transmission mechanism 31; at least partially extends out of the box during the working state. Outside the body 202 , the auxiliary support frame is deployed from the external transmission mechanism 32 . In this way, when the radiographic inspection equipment 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 the auxiliary support frame is stacked on the external transmission mechanism 31 does not affect the normal driving of the vehicle 200; when the radiographic inspection equipment 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 box 202 of the vehicle 200, The auxiliary support frame is deployed from the external transmission mechanism 31 so that the target 300 to be inspected is placed on the auxiliary support frame, and the external transmission mechanism 31 is in a working state of transmitting the target 300 . In this way, the external transmission mechanism 31 and the auxiliary support frame suitable for placing the target 300 will not occupy the internal space of the box 202 of the vehicle 200 , thereby allowing the inspection space 13 of the radiographic inspection device 100 to have sufficient length to meet the requirements of the radiographic inspection device 100 According to the length requirement of the inspection space 13, the scanning inspection of the target 300 can be smoothly realized.

In an exemplary embodiment, referring to Figures 6-10, the external transmission mechanism 31 includes: a base 311 used as a support frame, a first pivot mechanism 312 and a second pivot mechanism 314. The auxiliary support frame is pivotably connected to the first end (or outside) of the base 311 . The second end (or inner side) of the base 311 opposite to the first end is rotatably mounted to the support frame 1 through the first pivot mechanism 312, for example, installed on the bottom frame of the support frame 1 superior. A cyclically rotating belt conveyor 313 is installed on the base 311 to transport the target 300 . The second pivot mechanism 314 is installed 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 rod 52 . The driver 51 is pivotably mounted on the support frame 1 through a third pivot mechanism 53 . The driving rod 52 moves linearly under the driving of the driver 51 . One end of the driving rod 52 is connected to the base 311 through the second pivot mechanism 314 , so that the external transmission mechanism 31 moves in the driver 52 driven to rotate relative to the support frame 1. In an exemplary embodiment, the driver 52 includes a pneumatic or hydraulic cylinder, and the drive rod 52 includes a piston rod driven by the pneumatic or hydraulic cylinder.

In an alternative embodiment, the driver includes a motor, and the motor drives the external transmission mechanism 31 to rotate relative to the support frame 1 through a turbine in combination with a worm used as a drive rod.

Figure 15 shows a cross-sectional view of the vehicle-mounted security inspection system in an intermediate state according to an exemplary embodiment of the present disclosure; Figure 16 shows a rear view of another intermediate state of the vehicle-mounted security inspection system shown in Figure 15; Figure 17 shows the rear view of the vehicle-mounted security inspection system shown in Figure 15 when it is in working state; Figure 18 shows a partial side view of the vehicle-mounted security inspection system shown in Figure 17; Figure 19 shows the vehicle-mounted security inspection system shown in Figure 17 partial top view of.

According to an exemplary embodiment of the present disclosure, as shown in FIGS. 15-19 , the auxiliary support frame includes a first auxiliary support frame 34 deployably stacked on the external support mechanism 31 . The first auxiliary support frame 34 is connected to the first end of the base 311 through a fourth pivot mechanism 341 .

According to an exemplary embodiment of the present disclosure, the auxiliary support frame further includes a second auxiliary support frame 35 that is deployably stacked on the first auxiliary support frame 34 . The second auxiliary support frame 35 is connected to the end of the first auxiliary support frame 34 opposite to the external transmission mechanism 31 through the fifth pivot mechanism 351 . The auxiliary support frame also includes at least one set of legs 35 deployably stacked on the second auxiliary support frame 34 . When the external transmission mechanism 3 is in working condition, the support legs 352 are deployed from the second auxiliary support frame and supported on the ground, thereby increasing the support force and stability of the first auxiliary support frame and the second auxiliary support frame to place more of the inspected target.

According to an exemplary embodiment of the present disclosure, as shown in Figures 15-19, the second auxiliary support frame 35 is placed substantially horizontally, and the height of the second auxiliary support frame 35 from the ground is smaller than that of the external transmission The minimum height of the mechanism 31 from the ground makes the first auxiliary support frame 34 inclined. In this way, the target 300 can be placed on the second auxiliary support frame or removed from the second auxiliary support frame respectively.

In an exemplary embodiment, the first auxiliary support frame 34 and the second auxiliary support frame 35 can be folded or unfolded manually in sequence. Each of the first auxiliary support frame 34 and the second auxiliary support frame 35 may include a plurality of rollers arranged side by side, and the plurality of rollers can freely rotate under the driving of the target 300, thereby facilitating the movement of the target.

When the external transmission mechanism 31 is in an idle state, as shown in Figure 17, the first auxiliary support frame 34 can be folded onto the external transmission mechanism 31, and the second auxiliary support frame 35 can be folded onto the first auxiliary support frame 34; as shown in Figure As shown in Figure 18, when the first auxiliary support frame and the second auxiliary support frame are in the folded state, the first driving mechanism 5 is used to rotate the external transmission mechanism 31 to extend out of the box 202 of the vehicle 200; then, as shown in Figure 19 As shown in and 20 , the first auxiliary support frame, the second auxiliary support frame and the support legs are deployed in sequence, thereby completing the preparatory operation before inspection of the radiographic inspection equipment.

In an exemplary embodiment, referring to Figures 6-10, the first driving mechanism further includes a first limiting device 315, the first limiting device 315 is adapted to limit the external transmission mechanism 31 relative to the The rotation range of the support frame 1 is described. Specifically, the first limiting device 315 includes: a first proximity switch 3151 installed on the upright frame of the support frame 1 and a first fitting installed on the base 311 of the external transmission mechanism 31 Switch 3152, the first driving mechanism 314 stops driving the external transmission mechanism 31 to further rotate toward the support frame 1 in response to the first cooperation switch 3152 approaching the first proximity switch 3153.

In an exemplary embodiment, the first limiting device 315 also includes a second proximity switch 3153 installed on the bottom frame of the support frame 1, and the first driving mechanism 5 responds to the first When the cooperation switch 3152 approaches the second proximity switch 3153, it stops driving the external transmission mechanism 31 to move further away from the support frame 1.

In an exemplary embodiment, the first proximity switch 3151 and the second proximity switch 3153 are electromagnetically coupled with the first matching switch 62 in an inductive manner. For example, each of the first proximity switch 3151 and the second proximity switch 3153 includes a transmitting coil, and the first cooperating switch 3152 includes a receiving coil electromagnetically coupled with the transmitting coil. In an alternative embodiment, the first proximity switch 3151 and the second proximity switch 3153 are electrically connected to the first matching switch 3152 in an electrical contact manner.

In an exemplary embodiment, referring to FIGS. 4 and 5 , the internal transmission mechanism 32 further includes a detection device 321 installed on a side of the fixed frame 11 away from the opening 131 of the inspection space 13 . In response to the detection device 321 detecting the target 300 carried on the internal transmission mechanism 32 , the transmission mechanism 3 reversely rotates to drive the target 300 to move toward the opening 321 .

In an exemplary embodiment, the detection device 321 includes: light-emitting devices respectively installed on both sides of the support frame 1 perpendicular to the movement direction F of the target 300, and adapted to receive the light emitted by the light-emitting devices. Light receiving device. When the target 300 moves to block the light beam emitted by 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 according to the electrical signal generated by the light receiving device indicating that the target has reached the predetermined position, so as to drive the target 300 to move toward the opening 131 in the opposite direction to the movement direction F.

Referring to FIGS. 4 and 5 , each of the external transmission mechanism 31 and the internal transmission mechanism 32 may include a tape machine to rotate cyclically. When the external transmission mechanism 31 is in working condition, the object 300 to be inspected is placed on the external transmission mechanism 31 and is transmitted by the external transmission mechanism 31 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 target 300, the target 300 is transported by the internal transport mechanism 32 to the external transport mechanism 31 used as the output part, completing the scanning and inspection process of the target 300. That is to say, the target 300 enters the inspection space 13 through the opening 131 in the transmission mechanism 3 and moves to the inspection space through the opening 131 on the transmission mechanism 3 after being scanned and inspected. 13 external.

In an exemplary embodiment, as shown in FIGS. 2 and 3 , an auxiliary opening and an output transmission mechanism 33 are provided on the side of the inspection space 13 opposite to the opening 131 . In this embodiment, the target 300 enters the inspection space from the opening 131, and after being scanned and inspected, is moved out of the radiographic inspection device 100 from the output transmission mechanism 33 through the auxiliary opening.

In an exemplary embodiment, the radiographic inspection equipment 100 further includes: an auxiliary transmission mechanism 8 installed at an auxiliary opening of the inspection space 13 that communicates with the outside, and a third drive installed on the support frame 1 mechanism, the third drive mechanism is configured to maintain the auxiliary transmission mechanism in an idle state close to the support frame and 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, which will not be described again here.

In an exemplary embodiment, referring to FIG. 4 , an indicating device 7 suitable for indicating the working status of the radiographic inspection equipment 100 is provided on the support frame 1 of the radiographic inspection equipment 100 at a position outside the opening 131 .

FIG. 11 shows a simplified front view of a radiographic inspection device according to an exemplary embodiment of the present disclosure; FIG. 12 shows an axial cross-sectional view along line A-A of FIG. 11 , showing the retracted state of the moving frame; FIG. 13 shows an axial cross-sectional view along line A-A of FIG. 11 , showing the extended state of the mobile frame.

In an exemplary embodiment, referring to Figures 4 and 11-13, the support frame includes a fixed frame 11 and a movable frame 12 that is movable relative to the fixed frame. Each of the fixed frame 11 and the movable frame 12 may include A plurality of upright frames located on both sides and a plurality of top frames located above the upright frames. The upright frame is mounted on the bottom frame. The radiographic inspection equipment 100 further includes: at least one second driving mechanism 4, the second driving mechanism 4 is installed on the supporting frame 1 and is configured to drive the moving frame 12 to move relative to the fixed frame 11, to change the length of the inspection space 13.

Referring to FIGS. 1-4 and 11-13 , the second driving mechanism 4 of the radiographic inspection equipment 100 drives the mobile frame 12 to move to the outside of the box 202 of the vehicle 200 . In this way, when the radiographic inspection equipment 100 carrying the security inspection system 1000 is idle, the mobile frame 12 is retracted into the box 202 without affecting the normal driving of the vehicle 200; when the radiographic inspection equipment 100 is used to inspect the target 300, the first A driving mechanism 4 moves the mobile frame 12 to the outside of the box 202 of the vehicle 200, thereby extending the length of the inspection space 13, meeting the length requirements of the radiographic inspection equipment 100 for the inspection space 13, and successfully achieving the target 300. scan check.

14 shows a partial cross-sectional view of the second driving mechanism of the radiographic inspection apparatus according to an exemplary embodiment of the present disclosure.

In an exemplary embodiment, referring to Figures 11-14, each of the second driving mechanisms 4 includes: a driving device installed on the fixed frame 11, and a moving rod 43 configured to move between The driving device moves linearly to drive the movable frame 12 to move relative to the fixed frame 11 , so that the movable frame 12 extends out of the fixed frame 11 , thereby extending the length of the inspection space 13 of the radiographic inspection equipment 100 .

In an exemplary embodiment, the driving device includes: a motor 41 installed on the fixed frame 11 and a conversion device 42 coupled with the output shaft of the motor 41. The moving rod 43 is connected to the The conversion device 42 is engaged to convert the rotation of the conversion device 42 into the linear movement of the moving rod 43 . Further, the conversion device 42 includes: a first gear 421 installed on the output shaft of the motor 41, a second gear 422 meshed with the first gear 421, and a second gear 422 installed on the second gear 422. The driving shaft 423 is threadedly engaged with the moving rod 43 to convert the rotation of the driving shaft 423 into the linear movement of the moving rod 43 . In this way, 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 drive shaft 423 to rotate. The driving shaft 423 is threadedly engaged with the moving rod 43 to drive the moving rod 43 to move linearly.

In an exemplary embodiment, referring to FIGS. 11-14 , the radiographic inspection equipment 100 further includes at least one set of guide mechanisms 9 , which are installed between the inside of the fixed frame 11 and the outside of the mobile frame 12 , and is configured to guide the movement of the mobile frame 12 . In detail, referring to FIG. 6 , there are four sets of guide mechanisms 9 respectively installed on the upper and lower parts of the upright frames on both sides of the inspection space 13 of the mobile frame 12 . Each set of guide mechanisms includes: a guide rail installed on the inside of the fixed frame 11 ; and at least one roller or slider installed on the outside of the moving frame 12 . The rollers or sliders are combined with the guide rails so that the movable frame 12 can reciprocate linearly smoothly relative to the fixed frame driven by the second driving mechanism 4 .

In an exemplary embodiment, referring to FIG. 1 , a plurality of rollers 121 are installed on the lower part of the mobile frame 12 to further guide the mobile frame 12 to move smoothly.

In an exemplary embodiment, referring to FIGS. 11-14 , the radiographic inspection equipment 100 further includes a second limiting device 6 , the second limiting device 6 is adapted to limit the moving frame 12 relative to the fixed frame. 11 movement range. Specifically, the second limiting device 6 includes a third proximity switch 61 installed on the fixed frame 11 and a second cooperation switch 62 installed on the moving frame 12. The second driving mechanism 4. In response to the second cooperation switch 62 approaching the third proximity switch 61, stop driving the mobile frame 12 to move further away from the fixed frame 11.

In an exemplary embodiment, the second limiting device 6 further includes a fourth proximity switch 63 installed on the fixed frame 11 , and the second driving mechanism 4 responds to the second cooperation switch 62 Approach the fourth proximity switch 63 to stop driving the moving frame 12 to move further toward the fixed frame 11 . It can be understood that the distance between the third proximity switch 61 and the fourth proximity switch 62 is the maximum movement range of the mobile frame 12 .

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

In an exemplary embodiment, referring to FIGS. 1-3 and 11-14 , the mobile frame 12 has a retracted state that retracts into the fixed frame 11 and an extended state that extends out of the fixed frame 11 . When the radiographic inspection equipment 100 is idle, the mobile frame 12 is in a retracted state; when the radiographic inspection equipment 100 is working to inspect the target 300 , the mobile frame 12 is in an extended state extending out of the box 202 .

Those skilled in the art can understand that the radiographic inspection equipment can be configured to rotate the external transmission mechanism 31 from the idle state to the working state after extending the movable frame 12 from the fixed frame 11 as needed; it can also be configured to Before extending the mobile frame 12 from the fixed frame 11, the external transmission mechanism 31 is rotated from the idle state to the working state.

FIG. 20 shows a rear view of the vehicle-mounted security inspection system in a working state according to another exemplary embodiment of the present disclosure.

In an exemplary embodiment, referring to FIG. 20 , the radiographic inspection equipment includes a mobile frame 12 that can extend out of the box of the vehicle 200 , an external transmission mechanism 31 that rotates to a working state and extends out of the box, and a first pivot through a first pivot. The shaft 341 is rotatably connected to the first auxiliary support frame 34 of the external transmission mechanism. The first auxiliary support frame 34 can be folded onto the external transmission mechanism 31 when the external transmission mechanism 31 is in an idle state; and unfolded to be substantially in the same plane as the external transmission mechanism 31 when the external transmission mechanism 31 is in a working state, thus extending The length of the external transmission mechanism makes it easier to place more targets. An indicating device 7′ suitable for indicating the working status of the radiographic inspection equipment is installed on the side of the mobile frame 12.

In an exemplary embodiment, referring to Figures 1, 6, 8 and 18, the chassis 201 includes a main body part 2011 and a load-bearing part 2012. The wheels 205 of the vehicle 200 are installed on the main body part 2011. The load-bearing part 2012 is integrally connected with the main body part 2011, and the height of the carrying part 2012 from the ground is smaller than the height of the main body part 2011 from the ground. In this way, the maximum height of the vehicle-mounted security inspection system 1000 can be kept unchanged, and the height of the radiographic inspection equipment 100 from the ground can be reduced, making it convenient for people to place and remove targets from the radiographic inspection equipment.

Those skilled in the art can understand that the above-described embodiments are exemplary and can be improved by those skilled in the art. The structures described in the various embodiments do not conflict in structure or principle. can be freely combined.

Although the present disclosure has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to illustrate preferred embodiments of the present disclosure and should not be construed as a limitation of the present disclosure. While some embodiments of the presently disclosed inventive concept have been shown and described, those of ordinary skill in the art will understand that changes may be made in these embodiments without departing from the principles and spirit of the present general inventive concept. The scope is defined by the claims and their equivalents.

Claims (21)

1. A radiographic inspection device (100) adapted for use in an on-board security inspection system, mounted in a tank of a vehicle, comprising:

-a support frame (1) in which an examination space (13) suitable for X-ray scanning examination of an 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 within 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 transmission mechanism (3) comprising:

an external transmission mechanism (31);

an internal transport mechanism (32) disposed in the support frame; and

auxiliary supports (34, 35) having a stacked state stacked on the external transmission mechanism and an extended state extended from the external transmission mechanism

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) is mounted on the support frame and is configured to drive the movable frame to extend to the outside of the box of the vehicle relative to the fixed frame so as to extend the length of the inspection space, thereby meeting the length requirement of the radiographic inspection equipment on the inspection space.

2. The radiographic inspection apparatus of claim 1 wherein the auxiliary support frame comprises: a first auxiliary support (34) which is deployable superposed on the external transport mechanism.

3. The radiographic inspection apparatus of claim 2, wherein the auxiliary support frame further comprises: -a second auxiliary support frame (35) which is deployable superimposed on said first auxiliary support frame.

4. A radiographic inspection apparatus according to claim 3, wherein the auxiliary support frame further comprises: at least one set of legs (351) being deployable superimposed on the second auxiliary support frame.

5. The radiographic inspection device of claim 4, wherein the second auxiliary support rack is positioned substantially horizontally and the height of the second auxiliary support rack from the ground is less than the minimum height of the external transport mechanism from the ground.

6. The radiographic inspection device of any one of claims 1-5, wherein the external transmission mechanism comprises:

a base (311) on which a rolling device suitable for transporting objects is provided, the auxiliary support being pivotably connected to a first end of the base;

a first pivot mechanism (312) by which a second end of the base opposite the first end 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.

7. The radiographic inspection device of claim 6, 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.

8. The radiographic inspection device according to claim 7, 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.

9. The radiographic inspection device of claim 8, 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.

10. The radiographic inspection apparatus of claim 9 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.

11. The radiographic inspection device according to any one of claims 1-5, wherein the internal transmission mechanism further comprises detection means (321) mounted on a side of the stationary frame remote from the opening (131) of the inspection space,

The transport mechanism is counter-rotated to drive movement of an object (300) carried on the internal transport mechanism toward the opening in response to detection of the object by the detection device.

12. The radiographic inspection device of any one of claims 1-5, 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.

13. The radiographic inspection device of claim 1, 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.

14. The radiographic inspection apparatus of claim 13 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.

15. The radiographic inspection apparatus of claim 14 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.

16. The radiographic inspection device according to claim 1, further comprising at least one set of guide mechanisms (9) 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.

17. Radiographic inspection apparatus according to claim 1, further comprising a second stop device (6) adapted to limit the range of movement of the moving frame relative to the fixed frame.

18. The radiographic inspection apparatus of claim 17 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.

19. The radiographic inspection apparatus of claim 18 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.

20. 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 19, mounted in the vehicle box,

wherein the external transmission mechanism is contracted inside the case body during an idle state, and the auxiliary supporting frame is superposed on the external transmission mechanism; the auxiliary support frame extends at least partially out of the exterior of the case during the operational state, and is deployed from the external transport mechanism.

21. The in-vehicle security system of claim 20, 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.