WO2022206102A1 - 射线检查设备、以及检查目标的方法 - Google Patents
射线检查设备、以及检查目标的方法 Download PDFInfo
- Publication number
- WO2022206102A1 WO2022206102A1 PCT/CN2022/071215 CN2022071215W WO2022206102A1 WO 2022206102 A1 WO2022206102 A1 WO 2022206102A1 CN 2022071215 W CN2022071215 W CN 2022071215W WO 2022206102 A1 WO2022206102 A1 WO 2022206102A1
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- WIPO (PCT)
- Prior art keywords
- screen door
- door curtain
- inspection apparatus
- support frame
- target
- Prior art date
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- 238000007689 inspection Methods 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 171
- 230000004044 response Effects 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 54
- 238000001514 detection method Methods 0.000 claims description 38
- 230000007723 transport mechanism Effects 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000008093 supporting effect Effects 0.000 abstract description 2
- 238000013459 approach Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000013011 mating Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H5/00—Devices for drawing draperies, curtains, or the like
- A47H5/02—Devices for opening and closing curtains
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
- G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
- G01V5/226—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays using tomography
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47H—FURNISHINGS FOR WINDOWS OR DOORS
- A47H1/00—Curtain suspension devices
- A47H1/10—Means for mounting curtain rods or rails
- A47H1/104—Means for mounting curtain rods or rails for mounting curtain rails
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0018—Casings with provisions to reduce aperture leakages in walls, e.g. terminals, connectors, cables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/08—Means for conveying samples received
Definitions
- Embodiments of the present disclosure relate to a radiographic inspection apparatus, and more particularly, to a radiographic inspection apparatus suitable for inspecting an object carried on a transport mechanism, and a method of inspecting an object using the radiographic inspection apparatus.
- X-ray inspection equipment In the field of non-intrusion inspection of objects such as luggage or packages, X-ray inspection equipment is often used to inspect objects for the presence of prohibited items such as drugs, explosives, and the like.
- the object to be inspected usually passes through the inspection space of the radiographic inspection equipment by means of a conveying structure, and the X-ray emission device emits X-rays into the inspection space to realize the inspection of the object.
- shielded door curtains such as lead materials, are installed at the entrance and exit of the inspection space to shield X-rays in the radiographic inspection equipment and prevent leakage thereof.
- the screen door curtains currently in practical use are all distributed fixed suspensions.
- the low end of the screen door curtains will be in contact with the moving conveyor belt in the transmission mechanism.
- the object to be inspected enters the inspection area of the inspection space through the screen door curtain at the power opening entrance of the conveyor belt, and after the inspection is completed and passes through the inspection space, it needs to pass through the conveyor belt again. Exit the inspection space so that the target leaves the radiographic inspection device.
- the screen door curtains installed at the exit and the entrance are fixed on the support frame of the radiographic inspection equipment. Since the screen door curtain itself is relatively heavy, it cannot be lifted up compared to the light-weight object to be inspected. Screen door curtains enter the inspection area. On the contrary, when the screen door curtain is pushed open by the target prematurely, it will inevitably cause the leakage of X-rays.
- the purpose of the present disclosure is to solve at least one aspect of the above-mentioned problems and deficiencies in the prior art.
- a radiographic inspection apparatus including: a support frame in which an inspection space suitable for an inspection target is formed, the inspection space having an entrance and an exit communicating with the outside; a transmission a channel adapted to carry the target to move through the inspection space; a first screen door curtain and a second screen door curtain, respectively mounted at the entrance and exit; and a drive mechanism mounted on the support frame and being is configured to drive movement of at least one of the first and second screen door curtains to open or close all of the entrance or exit in response to the target approaching or leaving at least one of the entrance and exit. at least one of the above.
- the radiographic inspection apparatus further includes a first detection device, and the drive mechanism detects that the target carried on the transport channel is on the support frame in response to the first detection device
- the outer side of the screen door is close to the first screen door curtain, and the first screen door curtain is driven to rise, so as to allow the target to move to the inside of the inspection space on the transfer channel.
- the radiographic inspection apparatus further includes a second detection device, and the driving mechanism detects that the target carried on the transport channel is on the support frame in response to the second detection device
- the inner part is located at the first screen door curtain, and the drive is located at the first screen door curtain to descend to the initial position.
- the radiographic inspection apparatus further includes a third detection device, and the driving mechanism detects that the target carried on the transmission mechanism is on the support frame in response to the third detection device
- the interior of the second screen door curtain is located close to the second screen door curtain, and the second screen door curtain is driven upward to allow the target to move on the transfer mechanism to the outside of the inspection space.
- the radiographic inspection apparatus further includes a fourth detection device, and the driving mechanism detects that the target carried on the transport mechanism is on the support frame in response to the fourth detection device The outside of the screen leaves the second screen door curtain, and drives the second screen door curtain to descend to the initial position.
- the first, second, third and fourth detection devices include: light emitting devices respectively installed on both sides of the support frame perpendicular to the moving direction of the target, and The light-receiving device is adapted to receive light emitted by the light-emitting device.
- the driving mechanism includes a first driving mechanism and a second driving mechanism suitable for driving the first screen door curtain and the second screen door curtain to ascend or descend as a whole, respectively.
- any one of the first driving mechanism and the second driving mechanism includes: a driver mounted on the support frame; and a transmission mechanism through which the driver is driven The screen door curtain rises or falls.
- the driver includes a motor.
- the transmission mechanism includes: a driven shaft, which is installed on the upper part of the support frame and rotates under the drive of the motor; two first rollers are respectively installed near the two ends of the driven shaft, and rotate with the drive of the motor.
- the driven shaft rotates; two second rollers are respectively installed on the two opposite upright frames of the support frame, and are respectively located at the lower part of the two first rollers; two conveyor belts are respectively wrapped around the two each of the first rollers and the two second rollers; and a joint part, two ends of the joint part are respectively connected to the two conveyor belts, and the screen door curtain is connected to the joint parts, so that the shielding The curtain moves up and down with the conveyor belt.
- the joint portion includes: an elongated main body portion, and the upper end of the screen door curtain is connected to the main body portion; two guiding mechanisms are respectively disposed on two sides of the main body portion.
- Each of the guide mechanisms is adapted to cooperate with the upright frame to guide the joint to move up and down along the upright frame.
- each of the guide mechanisms includes: first pulley devices provided at both ends of the main body portion and extending into guide grooves formed in the upright frame to abut against the One side wall of the guide groove is rotated, and the guide groove extends in the upright direction on the upright frame.
- each of the guide mechanisms includes: sliding blocks disposed at both ends of the main body portion and slidably extending into guide grooves formed in the upright frame, the guide grooves being located in the upright frame.
- the upright frame extends in the upright direction.
- the guide structure further includes: a second pulley device mounted on the lower sides of both ends of the main body part, the pulley of the second pulley device and the bottom of the guide groove being rotatable ground contact.
- the transmission mechanism further includes a counterweight connected between the two conveyor belts to balance the weight of the joint portion and the screen door curtain.
- the radiographic inspection apparatus further includes a limiting device, and the limiting device is adapted to limit the movement range of the joint portion in the upright direction.
- the limiting device includes: a first proximity switch mounted on the support frame; and a matching switch mounted on the joint, and the driving mechanism is responsive to the matching The switch closes to the first proximity switch to stop driving the screen curtain to rise.
- the limiting device includes: a second proximity switch mounted on the support frame, and the driving mechanism stops driving the second proximity switch in response to the matching switch approaching the second proximity switch The screen curtain is lowered.
- the driver includes a motor.
- the transmission mechanism includes: a first roller mounted on the upper part of the support frame and rotated under the drive of the motor; a second roller mounted on the support frame and located at the lower part of the first roller; a conveyor belt, which is wrapped around the first roller and the second roller; and a joint part, the screen door curtain is connected to the conveyor belt through the joint part, so that the screen door curtain moves up and down with the conveyor belt.
- the coupling part includes: a main body part connected to the conveyor belt; a pair of clamping parts clamping the upper end of the screen door curtain, and connected to the main body.
- the transmission mechanism further includes a first guide structure, and the first guide mechanism is adapted to guide the up and down movement of the joint portion.
- the first guide mechanism includes: a guide rail mounted on the support frame; and a guide block mounted on the joint portion.
- the transmission mechanism further includes a counterweight connected on the other side of the conveyor belt opposite to the side connected to the joint to balance the joint and the weight of the screen curtain.
- the transmission mechanism further includes a second guide structure, and the second guide mechanism is adapted to guide the up and down movement of the counterweight.
- the transmission mechanism further includes a limiting device, and the limiting device is suitable for limiting the movement range of the joint portion in the up-down direction.
- the limiting device includes: a first proximity switch mounted on the support frame; and a matching switch mounted on the joint, and the driving mechanism is responsive to the matching The switch closes to the first proximity switch to stop driving the screen curtain to rise.
- the limiting device further includes: a second proximity switch mounted on the support frame, and the driving mechanism stops the driving mechanism in response to the matching switch approaching the second proximity switch.
- the screen door curtain is lowered.
- the driving mechanism drives the first screen door curtain to rise as a whole, so as to allow the object to move to the interior of the inspection space on the conveying mechanism;
- the driving mechanism drives the first screen door curtain to descend to the initial position as a whole;
- the driving mechanism drives the second screen door curtain to rise as a whole to allow the object to move to the outside of the inspection space.
- the method further includes the step of: when the target leaves the second screen door curtain outside the support frame, the driving mechanism drives the second screen door curtain as a whole up and down to the initial position.
- FIG. 1 shows a schematic perspective view of a radiographic inspection apparatus according to an exemplary embodiment of the present disclosure
- Fig. 2 shows a simple schematic diagram of the target inspection process of the radiographic inspection equipment shown in Fig. 1;
- FIG. 3 shows a partial front view of the radiographic inspection apparatus shown in FIG. 1;
- Fig. 4 shows the enlarged schematic diagram of part A shown in Fig. 3;
- Fig. 5 shows the enlarged schematic diagram of part B shown in Fig. 4;
- Fig. 6 shows another partial front view of the radiographic inspection apparatus shown in Fig. 1;
- Fig. 7 shows the enlarged schematic diagram of the C part shown in Fig. 6;
- FIG. 8 shows a partial side view of the radiographic inspection apparatus shown in FIG. 1;
- Fig. 9 shows the enlarged schematic diagram of part D shown in Fig. 8.
- Fig. 10 shows a partial top view of the radiographic inspection apparatus shown in Fig. 1;
- Figure 11 shows an enlarged schematic view of the E part shown in Figure 10;
- FIG. 12 shows a partial front view of a radiographic inspection apparatus of another exemplary embodiment of the present disclosure
- FIG. 13 shows a partial front view of the radiographic inspection apparatus shown in FIG. 12 , and part of the screen door curtain is not shown in the figure;
- Figure 14 shows an enlarged schematic view of the H part shown in Figure 13;
- Figure 15 shows a cross-sectional view along the line G-G shown in Figure 12;
- Figure 16 shows an enlarged schematic view of part I shown in Figure 15;
- FIG. 17 shows an enlarged schematic view of the J part shown in FIG. 15 .
- orientations such as “front, rear, top, bottom, left, right", “horizontal, vertical, vertical, horizontal” and “top, bottom” indicate the orientation Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present disclosure and simplifying the description, and these orientations do not indicate or imply the indicated device or element unless otherwise stated. It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as a limitation on the protection 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.
- 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 entrance and an exit communicating with the outside a transport channel adapted to carry the target to move through the inspection space; a first screen door curtain and a second screen door curtain, respectively installed at the entrance and exit; and a drive mechanism, mounted on the support frame, and is configured to drive at least one of the first and second screen door curtains to move to open or close the entrance or exit in response to the target approaching or leaving at least one of the entrance and exit at least one of.
- FIG. 1 shows a schematic perspective view of a radiographic inspection apparatus according to an exemplary embodiment of the present disclosure
- FIG. 2 shows a simplified schematic diagram of a target inspection process of the radiographic inspection apparatus shown in FIG. 1 .
- the radiographic inspection apparatus 100 is suitable for inspecting objects 200 such as luggage, packages, handbags, etc. 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 radiographic inspection apparatus 100 includes: a support frame 1 , a transmission mechanism 2 , a first screen door curtain 3 , a second screen door curtain 4 , and a driving mechanism 5 .
- An inspection space 11 suitable for the inspection object 200 is formed in the support frame 1, and the inspection space 11 has an inlet 111 and an outlet 112 communicating with the outside.
- the support frame 1 is provided with a casing made of shielding material to prevent radiation leakage.
- the transport mechanism 2 is adapted to carry the object 200 for movement through the examination space 11 .
- An X-ray transmitting and receiving device such as a CT machine is installed on the support frame to perform X-ray scanning inspection on the object 200 transferred by the transfer mechanism 2 to the inspection space 11 .
- the first screen door curtain 3 and the second screen door curtain 4 are respectively installed at the entrance 111 and the exit 112 of the inspection space 11 .
- the drive mechanism 5 is mounted on the support frame 1, for example on the top wall frame 14 of the support frame 1, and is configured to be configured to approach or leave at least one of the inlets 111 and 112 in response to the target One, drive at least one of the first screen door curtain 3 and the second screen door curtain 4 to move, so as to open or close at least one of the entrance 3 or the exit 4 .
- the radiographic inspection apparatus 100 also includes a controller adapted to receive electrical signals from various sensors and to control the operation of related devices (eg, CT machine, driving mechanism, etc.) of the radiographic inspection apparatus.
- the support frame 1 may include a plurality of upright frames 13 on both sides and a plurality of top frames 14 on the upper part of the upright frames 13 .
- the upright frame 13 is mounted on the base 15
- the transfer mechanism 2 includes an input transfer mechanism 21 mounted outside the inlet 111 of the mounting frame 1, an internal transfer mechanism 22 located in the inspection space 11, and an output outside the outlet 112 of the mounting frame 1 Transmission mechanism 23 .
- Each of the input transfer mechanism 21, the internal transfer mechanism 22, and the output transfer mechanism 23 may include a tape conveyor to rotate cyclically.
- the object to be inspected 200 is placed on the input transfer mechanism 21, and is transferred from the input transfer mechanism 21 to the internal transfer mechanism 22 through the inlet 111. After being inspected in the inspection space 11, the internal transfer mechanism 22 is transported to the output transfer mechanism through the outlet 112.
- the mechanism 23 completes the scanning inspection process for the target 200 . That is to say, the object 200 enters the inspection space 11 through the entrance 111 in the conveying mechanism 2 , and after scanning inspection, moves from the exit 112 to the inspection space on the conveying mechanism 2 11's exterior.
- the first screen door curtain 3 can be lifted by the driving mechanism 5 , thereby allowing the object 200 to Pass through the entrance 111 smoothly; and after the target passes through the entrance 111, according to the occurrence of the event that the target leaves the entrance 111, the driving mechanism 5 drops the first screen door curtain 3 again; after completing the scanning inspection of the target in the inspection space 11, according to the target 200 near the exit 112 event occurs, the second screen door curtain 4 can be lifted by the drive mechanism 5, thereby allowing the target 200 to pass the exit 112 smoothly; and after the target passes the exit 112, according to the occurrence of the event that the target leaves the exit 112, the drive mechanism 5 The second screen door curtain 3 is then dropped, thereby preventing the X-rays in the inspection space from leaking to the outside and causing radiation pollution to the surrounding environment.
- the radiographic inspection apparatus 100 further includes a first detection device 7 , and the driving mechanism 5 detects 7 to be carried on the transmission mechanism in response to the first detection device.
- the target 200 on the input transfer mechanism 21 of The screen door curtain is in an open state to allow the object 200 to move on the transport mechanism 2 to the interior of the inspection space 11 .
- the radiographic inspection apparatus 100 further includes a second detection device 8 , and the driving mechanism 5 is responsive to the second detection device 8 to detect that it is carried on the transmission mechanism. 2.
- the target 200 on the internal transmission mechanism 22 leaves the first screen door curtain 3 at the entrance 111 inside the support frame 1, and drives the first screen door curtain 3 to descend to the initial position, that is, the first screen door Door curtains are closed to prevent radiation leakage.
- the radiographic inspection apparatus 100 further includes a third detection device 9 , and the driving mechanism 5 is responsive to the third detection device 9 to detect that it is carried on the transmission mechanism
- the target on the 2 is located close to the second screen door curtain 4 inside the support frame 1, and the curtain on the second screen door 4 is driven to rise to allow the target to move on the transfer mechanism 2 to the Check the outside of space 11.
- the radiographic inspection apparatus 100 further includes a fourth detection device 10 , and the driving mechanism 5 is responsive to the fourth detection device 10 to detect that it is carried on the transmission mechanism.
- the target on 2 leaves the second screen door curtain 4 outside the support frame 1, and drives the second screen door curtain 4 to descend to the initial position.
- the first detection device 7 , the second detection device 8 , the third detection device 9 and the fourth detection device 10 respectively detect that the target 200 arrives at different predetermined positions, namely approaching the entrance 111 , leaving the entrance 111 , A position close to the outlet 112 and away from the outlet 112 .
- each of the first detection device 7 , the second detection device 8 , the third detection device 9 and the fourth detection device 10 includes: The light emitting devices on both sides of the target 200 perpendicular to the moving direction F, and the light receiving devices adapted to receive the light emitted by the light emitting devices.
- 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 200 moves to a predetermined position.
- the controller controls the driving mechanism to drive the first or second screen door curtain to ascend, descend, or maintain the original state according to the electrical signal generated by the light-receiving device indicating that the target reaches the predetermined position.
- Fig. 3 shows a partial front view of the radiographic inspection apparatus shown in Fig. 1;
- Fig. 4 shows an enlarged schematic view of part A shown in Fig. 3;
- Fig. 5 shows an enlarged schematic view of part B shown in Fig. 4;
- Fig. 6 shows another partial front view of the radiographic inspection equipment shown in Fig. 1;
- Fig. 7 shows an enlarged schematic view of the C part shown in Fig. 6;
- Fig. 8 shows the radiographic inspection equipment shown in Fig. 1 Fig. 9 shows an enlarged schematic view of part D shown in Fig. 8;
- Fig. 10 shows a partial top view of the radiographic inspection apparatus shown in Fig. 1;
- Fig. 11 shows part E shown in Fig. 10 enlarged schematic diagram.
- the driving mechanism 5 includes a first driving mechanism and a second driving mechanism adapted to drive the first screen door curtain 3 and the second screen door curtain 4 to ascend or descend as a whole, respectively.
- any one of the first driving mechanism and the second driving mechanism includes: a driver 51 mounted on the support frame 1; and a transmission mechanism 52,
- the driver 51 drives the screen door curtain 3 to ascend or descend through the transmission mechanism 52 to open or close the entrance 111 .
- the driver 51 includes a motor adapted to drive the transmission 52 .
- the transmission mechanism includes: a driven shaft 527 , two first rollers 521 , two second rollers 522 , a conveyor belt 523 , and a joint 524 .
- the driven shaft 525 is arranged on the upper part of the top frame 14 of the support frame 1 and rotates under the driving of the motor through the reduction mechanism 5273 and the coupling 5272 .
- the two first rollers 521 are respectively installed near both ends of the driven shaft 525 to rotate with the driven shaft 525 .
- Each of the first rollers is mounted on the upper part of the top frame 14 of the support frame 1 through the bearing mechanism 5271 .
- the two second rollers 522 are respectively mounted on the upright frame 13 of the supporting frame 1 and located at the lower part of the two first rollers 521 respectively.
- the two conveyor belts 523 are respectively wrapped around the two first rollers 521 and the two second rollers 522, thereby forming two sets of conveyor belt mechanisms.
- Both ends of the joint portion 524 are respectively connected to the two conveyor belts 523 , and the screen door curtain 3 is connected to the joint portion 524 , so that the screen door curtain 3 moves up and down with the conveyor belt 523 .
- each second roller 522 is rotatably mounted on a fixed shaft 5221, and the fixed shaft 5221 is mounted on the fixed shaft 5222 using a connecting member 5222 such as a bolt. on the support base 133 between the upright frames 13 .
- the height of the fixed shaft 5221 relative to the upright frame 13 can be adjusted by adjusting the bolts 5223, thereby adjusting the degree of tension of the conveyor belt.
- the joint part 524 includes: an elongated main body part 5241 , and the upper end of the screen door curtain 3 is connected to the screen door curtain 3 through a plurality of connecting pieces 5245 such as bolts.
- the driver 51 drives the two first rollers 521 to rotate through the driven shaft 527, so as to further drive the conveyor belt 523 to move up and down, so that the upper end of the screen door curtain 3 moves up and down as a whole.
- the transmission mechanism may include a turbine driven by an electric motor, and a worm cooperating with the turbine, and the joint portion is mounted on the worm.
- the motor drives the turbine to rotate, and through the meshing of the turbine and the worm, the rotation of the motor is converted into the linear movement of the worm, so that the worm drives the screen door curtain to rise and fall.
- the piston rod of a pneumatic cylinder or a hydraulic cylinder can be used to drive the joint to move up and down linearly, thereby driving the screen door curtain to rise and fall.
- each of the guide mechanisms 5242 includes a first pulley device 5244 disposed at both ends of the main body portion 5241 and extending to a guide groove formed in the upright frame 13 131 to rotate against one side wall of the guide groove 131 , and the guide groove 131 extends along the upright direction on the upright frame 13 . This can prevent the screen door curtain 3 from swinging back and forth.
- each of the guide mechanisms includes sliding blocks provided at both ends of the main body portion 5241 and slidably extending to guides formed on the upright frame 13 Among the grooves 131, the guide grooves extend along the upright direction on the upright frame.
- the guide structure 5242 further includes: a second pulley device 5243 , the second pulley device 5243 is installed on the lower sides of both ends of the main body part 5241 , so The pulley of the second pulley device 5243 is in rotatable elastic contact with the bottom 132 of the guide groove 131 . In this way, the screen door curtain 3 can be prevented from swinging left and right, and the screen door curtain 3 can be kept moving up and down in a stable posture.
- the transmission mechanism 52 further includes a counterweight 525, the weight of which depends on the total weight of the joint portion 4 and the screen door curtain 3, and is connected between the two conveyor belts 523, And it is located on the other side opposite to the side connecting the joint part 524 to balance the weight of the joint part 524 and the screen door curtain 3 .
- a counterweight 525 By arranging the counterweight 525, the force for driving the movement of the screen door curtain can be reduced, thereby reducing the power of the driver.
- the radiographic inspection apparatus 100 further includes a limiting device 526 , and the limiting device 526 is adapted to limit the moving range of the joint portion 524 in the up-down direction, thereby limiting the The lifting range of screen door curtain 3.
- the limiting device 526 includes: a first proximity switch 5261 mounted on the upright frame 13 of the support frame 1; In response to the cooperation switch 5262 approaching the first proximity switch 5261, the screen door curtain 3 is stopped to be driven to rise.
- the limiting device 526 further includes a second proximity switch 5263 mounted on the upright frame 13 of the support frame 1 and located below the first proximity switch 5261, and the driving mechanism 5 responds to the matching switch 5262 is close to the second proximity switch 5263 to stop driving the screen door curtain 3 to descend. That is, when the matching switch 5262 approaches the first proximity switch 5261, the screen door curtain 3 stops rising; when the matching switch 5262 approaches the second proximity switch 5263, the screen door curtain 3 stops descending . In this way, the moving range of the upper end of the screen door curtain 3 is limited within the distance between the first proximity switch 5261 and the second proximity switch 5263, that is, the maximum lifting range of the screen door curtain 3 as a whole is the first proximity switch 5261 and the second proximity switch 5263.
- first proximity switch 5261 and the second proximity switch 5263 are electromagnetically coupled with the mating switch 5262 in an inductive manner.
- each of the first proximity switch 5261 and the second proximity switch 5263 includes a transmitting coil
- the mating switch 5262 includes a receiving coil that is electromagnetically coupled to the transmitting coil.
- the first proximity switch 5261 and the second proximity switch 5263 and the mating switch 5262 are electrically connected in an electrical contact manner.
- both the first screen door curtain 3 and the second screen door curtain 4 comprise stacked layers of materials, one layer of which is made of a lead-containing material.
- the screen door curtain may be a single panel with the outer contour as a whole, which can improve the X-ray shielding performance of the first and second screen door curtains.
- FIG. 12 shows a partial front view of a radiographic inspection apparatus according to another exemplary embodiment of the present disclosure
- FIG. 13 shows a partial front view of the radiographic inspection apparatus shown in FIG. 12 , and a part of the screen door curtain is not shown in the figure
- Figure 14 shows the enlarged schematic view of the H part shown in Figure 13
- Figure 15 shows the sectional view along the G-G line shown in Figure 12
- Figure 16 shows the enlarged schematic view of the I part shown in Figure 15
- 17 shows an enlarged schematic view of part J shown in FIG. 15 .
- any one of the first driving mechanism and the second driving mechanism includes: a driver 51 ′ mounted on the support frame 1 ; and a transmission mechanism 52', through which the driver 51 drives the screen door curtain 3 to ascend or descend, so as to open or close the first entrance.
- the driver 51' includes a motor adapted to drive the transmission 52'.
- the transmission mechanism includes: a first roller 521', mounted on the upper part of the support frame 1, and rotated under the drive of the motor through the coupling 529'; a second roller 522', mounted on the support frame 1 on the lower part of the first roller 521'; a conveyor belt 523', wrapping around the first roller 521' and the second roller 522'; and a joint 524', through which the screen door curtain 3 passes
- the portion 524' is connected to the conveyor belt 523', so that the screen door curtain 3 as a whole moves up and down with the conveyor belt 523'.
- the coupling portion 524 ′ includes: a main body portion 5241 ′ connected to the conveyor belt 523 ′; a pair of clamping members 5242 ′, The pair of clamping members 5242' use bolts 5243' to clamp the upper end of the screen door curtain, and are connected to the main body portion 5241'.
- the driver 51' drives the first roller 521' to rotate, thereby further driving the conveyor belt 523' to move up and down, so that the upper end of the screen door curtain 3, and then the entirety, moves up and down.
- the transmission mechanism may include a turbine driven by a motor, and a worm matched with the turbine, and the joint portion is mounted on the worm.
- the motor drives the turbine to rotate, and through the meshing of the turbine and the worm, the rotation of the motor is converted into the linear movement of the worm, so that the worm drives the screen door curtain to rise and fall.
- the piston rod of a pneumatic cylinder or a hydraulic cylinder can be used to drive the joint to move up and down linearly, thereby driving the screen door curtain to rise and fall.
- the main body portion 5241 ′ has a substantially isosceles triangle or isosceles trapezoid shape, and the narrow upper portion of the main body portion is connected to the conveyor belt 523 ′ through an elastic bolt mechanism 5231 ′, and the wider upper portion is connected to the conveyor belt 523 ′.
- the lower part is connected to the substantially middle part of the pair of clips 5242'. In this way, the screen door curtain 3 is driven to move by one conveyor belt 523', and the screen door curtain 3 can be kept moving up and down in a stable posture.
- the transmission mechanism 52' further includes a first guide structure 525', and the first guide mechanism is adapted to guide the up and down movement of the joint portion 524.
- the first guide mechanism 525' includes: a guide rail 5251' mounted on the support frame 1; and a guide block 5252' mounted on the joint portion 524'.
- a guide groove extending in the vertical direction may be formed on the guide rail 5251', and a part of the guide block 5252' may be inserted into the guide groove. In this way, the joint portion 524' and the screen door curtain 3 can move linearly in the vertical direction, and the screen door curtain 3 can be prevented from being twisted.
- the first guide mechanism includes guide grooves formed on the inner side of the pair of upright frames 13 of the support frame 1 and extending up and down, and two ends of the clamping member 5242' are respectively inserted into the guide grooves, Thus, the lifting operation of the screen door curtain is guided.
- the transmission mechanism 52 ′ further includes a counterweight 526 ′, the weight of which depends on the total weight of the joint 4 and the screen door curtain 3 , and is connected to the conveyor belt 523 ' on the other side opposite to the side connecting the joint part 524 ′, so as to balance the weight of the joint part 524 ′ and the screen door curtain 3 .
- a counterweight 526 ′ the weight of which depends on the total weight of the joint 4 and the screen door curtain 3 , and is connected to the conveyor belt 523 ' on the other side opposite to the side connecting the joint part 524 ′, so as to balance the weight of the joint part 524 ′ and the screen door curtain 3 .
- the transmission mechanism 52' further includes a second guide structure 527', and the second guide mechanism 527' is adapted to guide the up and down movement of the counterweight 526'.
- the second guide mechanism 527&apos includes: a guide rail mounted on the support frame 1; and a guide block mounted on the configuration 4. In this way, the configuration 526' can be moved in a straight line in the up-down direction,
- the radiographic inspection apparatus 100 further includes a limiting device 528 ′, and the limiting device 528 ′ is adapted to limit the moving range of the joint portion 524 ′ in the up-down direction , and then limit the lifting range of the screen door curtain.
- the limiting device 528' includes: a first proximity switch 5281' mounted on the support frame 1; and a matching switch 5282' mounted on the joint 524', the driving mechanism 5 In response to the cooperation switch 5282' approaching the first proximity switch 5281', the driving of the screen door curtain 3 to rise is stopped.
- the limiting device 528' further includes a second proximity switch 5283' mounted on the support frame 1, and the driving mechanism 5 approaches the second proximity switch 5283' in response to the matching switch 5282' Stop driving the screen door curtain 3 to descend. That is, when the matching switch 5282' approaches the first proximity switch 5281', the screen door curtain 3 stops rising; when the matching switch 5282' approaches the second proximity switch 5283', the shielding The curtain 3 stops descending. In this way, the movement range of the upper end of the screen door curtain 3 is limited within the distance between the first proximity switch 5281' and the second proximity switch 5283', that is to say, the overall maximum lifting range of the screen door curtain 3 is the first proximity switch 5281 ' and the distance between the second proximity switch 5283'.
- the first proximity switch 5281' and the second proximity switch 5283' are electromagnetically coupled with the mating switch 5282' in an inductive manner.
- each of the first proximity switch 5281' and the second proximity switch 5283' includes a transmitting coil
- the mating switch 4282' includes a receiving coil that is electromagnetically coupled to the transmitting coil.
- the first proximity switch 5281' and the second proximity switch 5283' are electrically connected with the mating switch 5282' in an electrical contact manner.
- first drive mechanism 53 drives the first screen door curtain 3 at the entrance 111 to lift and lower
- second drive mechanism 54 with the same or similar structure can drive the first screen door curtain 3 at the exit 112
- the lifting and lowering of the second screen door curtain 4 and the drive and transmission mechanism applicable to the first screen door curtain 3 may be the same or similar to those applicable to the second screen door curtain 4 .
- the first screen door curtain 3 and the second screen door curtain 4 may be selectively driven by means of a driver through a clutch. That is to say, the first screen door curtain 3 and the second screen door curtain 4 share one driving mechanism 5 .
- a method for inspecting a target 200 using the radiographic inspection apparatus 100 described in any of the above embodiments including the following steps:
- the first detection device 7 When the object 200 to be inspected moves close to the entrance 111, the first detection device 7 is triggered, and the driving mechanism 5 drives the first screen door curtain 3 to rise as a whole, so as to allow the object 200 to move in the conveying process.
- the input transmission mechanism 21 of the mechanism 2 moves along the moving direction F to the internal transmission mechanism 22 inside the inspection space 11;
- the second detection device 8 When the target 200 on the inner transmission mechanism 22 of the transmission mechanism 2 leaves the first screen door curtain 3 inside the support frame 1, the second detection device 8 is triggered, and the driving mechanism 5 drives the first screen door curtain 3 is lowered to the initial position as a whole, that is, the position where the lower end of the first screen door curtain 3 is in contact with the transmission mechanism 2;
- the third detection device 9 When the inspected object 200 moves close to the exit 112 in the inspection space 11, the third detection device 9 is triggered, and the driving mechanism drives the second screen door curtain 4 to rise as a whole, so as to allow the object 200 to be in the
- the inner transport mechanism 22 of the transport mechanism 2 continues to move along the movement direction F to the output transport mechanism 23 outside the inspection space 11 .
- the fourth detection device 10 is triggered, and the driving mechanism drives the target located in the second screen door curtain 4.
- the second screen door curtain 4 as a whole descends to the initial position, that is, the position where the lower end of the second screen door curtain 4 is in contact with the transmission mechanism 2 .
- the driving mechanism can drive the up and down of the screen door curtain according to the occurrence of the event that the target approaches or leaves the screen door curtain, it can ensure that the light-weight target can smoothly enter the inspection space for inspection.
- the X-rays in the inspection space can be shielded more tightly to ensure that the rays cannot leak into the surrounding environment.
- the screen door curtain is made heavier and has better rigidity in order to achieve stricter shielding, and includes a support plate with relatively high rigidity, it can also be avoided that the target cannot lift the screen door curtain when the target is in the security inspection process. The situation occurs, and there is no possibility of leaking X-rays. Since the target enters the inspection space from the entrance and moves out of the inspection space from the exit, continuous inspection can be achieved.
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Abstract
一种射线检查设备(100)和检查目标的方法。射线检查设备(100)包括：支撑框架(1)，支撑框架(1)内形成适用于检查目标(200)的检查空间(11)，检查空间(11)具有与外部连通的入口(111)和出口(112)；传输通道(2)，适用于承载目标(200)穿过检查空间(11)移动；第一屏蔽门帘(3)和第二屏蔽门帘(4)，分别安装在入口(111)和出口(112)处；以及驱动机构(5)，安装在支撑框架(1)上，并被构造成响应于目标(200)靠近或者离开入口(111)和出口(112)中的至少一个，驱动第一屏蔽门帘(3)和第二屏蔽门帘(4)中的至少一个移动，以打开或者关闭入口(111)或者出口(112)中的至少一个。由于驱动机构(5)可以根据目标(200)靠近或者离开屏蔽门帘事件的发生，驱动屏蔽门帘的升降，可以确保重量较轻的目标(200)能够顺利进入到检查空间(11)中以进行后续的射线扫描接触。
Description
本申请要求于2021年03月30日递交的中国专利申请No.202110344167.X的优先权，其内容一并在此作为参考。
本公开的实施例涉及一种射线检查设备，特别是涉及一种适用于检查在传输机构上承载的目标的射线检查设备、以及利用这种射线检查设备检查目标的方法。
在诸如行李箱或包裹之类的目标不入侵检查领域内，常常采用X射线检查设备检查目标内是否存在例如毒品、爆炸物之类的违禁物品。待检验的目标通常借助于输送结构穿过射线检查设备的检查空间，射线发射装置向检查空间内发射X射线，以实现对目标的检查。一般地，在现有射线检查设备中，在检查空间的入口和出口安装例如包括铅材料的屏蔽门帘，以屏蔽射线检查设备内的X射线，防止其泄露。
当前实际应用的屏蔽门帘都是分布式固定悬挂，为保证其屏蔽X射线的效果，屏蔽门帘低端都会与传输机构中移动的传送带接触。在检查过程中，待检目标通过传送带的动力顶开入口处的屏蔽门帘进入检查空间的检查区域，且在检查完毕并通过检查空间之后，需再次通过传送带的拖动顶开出口处的屏蔽门帘离开检查空间，使得目标离开射线检查设备。
在现有的这种射线检查设备中，安装在出口和入口处的屏蔽门帘固定在射线检查设备的支撑框架上，由于屏蔽门帘本身比较沉重，相对于重量较轻的待检目标，无法顶开屏蔽门帘进入到检查区域。反之，当屏蔽门帘过早被目标顶开时，不可避免的会造成X射线的泄露。
在另一种射线检查设备中，在检查空间内采用分布式布置多道屏蔽门帘，这样，无论在入口还是出口处，在一道屏蔽门帘被顶开的情况下，仍有其它的屏蔽门帘保持关闭，从而可以确保防止射线泄露。但是，在这种射线检查设备中，需要检查空间具有一定的长度才能达到屏蔽X射线的要求，故需要检查空间较长，所占空间较大。
发明内容
本公开的目的旨在解决现有技术中存在的上述问题和缺陷的至少一个方面。
根据本公开的一个方面的实施例，提供一种射线检查设备，包括：支撑框架，所述支撑框架内形成适用于检查目标的检查空间，所述检查空间具有与外部连通的入口和出口；传输通道，适用于承载所述目标穿过所述检查空间移动；第一屏蔽门帘和第二屏蔽门帘，分别安装在所述入口和出口处；以及驱动机构，安装在所述支撑框架上，并被构造成响应于所述目标靠近或者离开所述入口和出口中的至少一个，驱动所述第一屏蔽门帘和第二屏蔽门帘中的至少一个移动，以打开或者关闭所述入口或者出口中的所述至少一个。
根据本公开的一种实施例，所述射线检查设备还包括第一检测装置，所述驱动机构响应于所述第一检测装置检测到被承载在所述传输通道上的目标在所述支撑框架的外侧靠近所述第一屏蔽门帘，驱动所述第一屏蔽门帘上升，以允许所述目标在所述传输通道上移动到所述检查空间的内部。
根据本公开的一种实施例，所述射线检查设备还包括第二检测装置，所述驱动机构响应于所述第二检测装置检测到被承载在所述传输通道上的目标在所述支撑框架的内部离开位于所述第一屏蔽门帘，驱动位于所述第一屏蔽门帘下降到初始位置。
根据本公开的一种实施例，所述射线检查设备还包括第三检测装置，所述驱动机构响应于所述第三检测装置检测到被承载在所述传输机构上的目标在所述支撑框架的内部靠近位于所述第二屏蔽门帘，驱动位于所述第二屏蔽门帘上升，以允许所述目标在所述传输机构上移动到所述检查空间的外部。
根据本公开的一种实施例，所述射线检查设备还包括第四检测装置，所述驱动机构响应于所述第四检测装置检测到被承载在所述传输机构上的目标在所述支撑框架的外部离开所述第二屏蔽门帘，驱动所述第二屏蔽门帘下降到初始位置。
根据本公开的一种实施例，所述第一、第二、第三和第四检测装置包括：分别安装在所述支撑框架的与所述目标的移动方向垂直的两侧的发光 器件、和适用于接收所述发光器件发出的光接收器件。
根据本公开的一种实施例，所述驱动机构包括适用于分别驱动第一屏蔽门帘和第二屏蔽门帘整体上上升或者下降的第一驱动机构和第二驱动机构。
根据本公开的一种实施例，所述第一驱动机构和和第二驱动机构中的任一个包括：驱动器，安装在所述支撑框架上；以及传动机构，所述驱动器通过所述传动机构驱动所述屏蔽门帘上升或者下降。
根据本公开的一种实施例，所述驱动器包括电机。所述传动机构包括：从动轴，安装在所述支撑框架的上部，并在所述电机的驱动下转动；两个第一滚轮，分别安装在所述从动轴的两端附近，并随所述从动轴转动；两个第二滚轮，分别安装在所述支撑框架的两个相对的直立框架上，并分别位于两个所述第一滚轮的下部；两个传送带，分别环绕在两个所述第一滚轮和两个第二滚轮上；以及结合部，所述结合部的两端分别连接至两个所述传送带上，所述屏蔽门帘连接至所述结合部，使得所述屏蔽门帘随所述传送带上下移动。
根据本公开的一种实施例，所述结合部包括：长条形的主体部，所述屏蔽门帘的上端连接至所述主体部上；两个引导机构，分别设置在所述主体部的两端，每个所述引导机构适用于与所述直立框架配合，以引导所述结合部沿所述直立框架上下移动。
根据本公开的一种实施例，每个所述引导机构包括：第一滑轮装置，设置在所述主体部的两端，并延伸到形成在直立框架的引导槽中，以抵靠在所述引导槽的一个侧壁上转动，所述引导槽在直立框架上沿直立方向延伸。
根据本公开的一种实施例，每个所述引导机构包括：滑动块，设置在所述主体部的两端，并可滑动地延伸到形成在直立框架的引导槽中，所述引导槽在直立框架上沿直立方向延伸。
根据本公开的一种实施例，所述引导结构还包括：第二滑轮装置，安装在所述主体部的两端的下侧，所述第二滑轮装置的滑轮与所述引导槽的底部可转动地接触。
根据本公开的一种实施例，所述传动机构还包括配重，所述配重连接 在两个所述传送带之间，以平衡所述结合部和屏蔽门帘的重量。
根据本公开的一种实施例，所述射线检查设备还包括限位装置，所述限位装置适用于限制所述结合部在直立方向上的移动范围。
根据本公开的一种实施例，所述限位装置包括：第一接近开关，安装在所述支撑框架上；以及配合开关，安装在所述结合部上，所述驱动机构响应于所述配合开关接近所述第一接近开关停止驱动所述屏蔽门帘上升。
根据本公开的一种实施例，所述限位装置包括：第二接近开关，安装在所述支撑框架上，所述驱动机构响应于所述配合开关接近所述第二接近开关停止驱动所述屏蔽门帘下降。
根据本公开的一种实施例，所述驱动器包括电机。所述传动机构包括：第一滚轮，安装在所述支撑框架的上部，并在所述电机的驱动下转动；第二滚轮，安装在所述支撑框架上并位于所述第一滚轮的下部；传送带，环绕在所述第一滚轮和第二滚轮上；以及结合部，所述屏蔽门帘通过所述结合部连接至所述传送带，使得所述屏蔽门帘随所述传送带上下移动。
根据本公开的一种实施例，所述结合部包括：主体部，所述主体部的连接至所述传送带；一对夹持件，该对夹持件夹持所述屏蔽门帘的上端，并连接至所述主体部上。
根据本公开的一种实施例，所述传动机构还包括第一引导结构，所述第一引导机构适用于引导所述结合部的上下移动。
根据本公开的一种实施例，所述第一引导机构包括：导轨，安装在所述支撑框架上；以及引导块，安装在所述结合部上。
根据本公开的一种实施例，所述传动机构还包括配重，所述配重连接在所述传送带的与连接所述结合部的一侧相对的另一侧上，以平衡所述结合部和屏蔽门帘的重量。
根据本公开的一种实施例，所述传动机构还包括第二引导结构，所述第二引导机构适用于引导所述配重的上下移动。
根据本公开的一种实施例，所述传动机构还包括限位装置，所述限位装置适用于限制所述结合部在上下方向上的移动范围。
根据本公开的一种实施例，所述限位装置包括：第一接近开关，安装在所述支撑框架上；以及配合开关，安装在所述结合部上，所述驱动机构 响应于所述配合开关接近所述第一接近开关停止驱动所述屏蔽门帘上升。
根据本公开的一种实施例，所述限位装置还包括：第二接近开关，安装在所述支撑框架上，所述驱动机构响应于所述配合开关接近所述第二接近开关停止驱动所述屏蔽门帘下降。
根据本公开另一方面的实施例，通过一种利用上述射线检查设备检查目标的方法，包括：
将待检测的目标放置在所述传输机构上；
待检查的所述目标移动到靠近所述入口时，所述驱动机构驱动所述第一屏蔽门帘整体上上升，以允许所述目标在所述传输机构上移动到所述检查空间的内部；
在所述传输机构上的目标在所述支撑框架的内部离开所述第一屏蔽门帘时，驱动机构驱动所述第一屏蔽门帘整体上下降到初始位置；
对在所述检查空间内移动的目标进行放射性检查；以及
在已检查的目标在所述检查空间内移动到靠近所述出口时，所述驱动机构驱动所述第二屏蔽门帘整体上上升，以允许所述目标移动到所述检查空间的外部。
根据本公开的一种实施例，所述方法还包括如下步骤：在所述目标在所述支撑框架的外部离开位于所述第二屏蔽门帘时，所述驱动机构驱动所述第二屏蔽门帘整体上下降到初始位置。
图1示出了本公开的一种示例性实施例的射线检查设备的立体示意图；
图2示出了图1所示的射线检查设备的目标检查过程的简易示意图；
图3示出了图1所示的射线检查设备的局部正视图；
图4示出了图3所示的A部分的放大示意图；
图5示出了图4所示的B部分的放大示意图；
图6示出了图1所示的射线检查设备的另一种局部正视图；
图7示出了图6所示的C部分的放大示意图；
图8示出了图1所示的射线检查设备的局部侧视图；
图9示出了图8所示的D部分的放大示意图；
图10示出了图1所示的射线检查设备的局部俯视图；
图11示出了图10所示的E部分的放大示意图；
图12示出了本公开的另一种示例性实施例的射线检查设备的局部正视图；
图13示出了图12所示的射线检查设备的局部正视图，图中部分屏蔽门帘未示出；
图14示出了图13所示的H部分的放大示意图；
图15示出了沿图12所示的G-G线的剖视图；
图16示出了图15所示的I部分的放大示意图；以及
图17示出了图15所示的J部分的放大示意图。
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。基于本公开中的实施例，本领域普通技术人员在没有开展创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
在下面的详细描述中，为便于解释，阐述了许多具体的细节以提供对本披露实施例的全面理解。然而明显地，一个或多个实施例在没有这些具体细节的情况下也可以被实施。在其他情况下，公知的结构和装置以图示的方式体现以简化附图。对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为授权说明书的一部分。
在本公开的描述中，需要理解的是，方位词如“前、后、上、下、左、右”、“横向、竖向、垂直、水平”和“顶、底”等所指示的方位或位置关系通常是基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，在未作相反说明的情况下，这些方位词并不指示和暗示所指的装置或元件必须具有特定的方位或者以特定的方位构造和操作，因此不能理解为对本公开保护范围的限制；方位词“内、外”是指相对于各部件本身的轮廓的内外。
在本公开的描述中，需要理解的是，使用“第一”、“第二”等词语来 限定零部件，仅仅是为了便于对相应零部件进行区别，如没有另行声明，上述词语并没有特殊含义，因此不能理解为对本公开保护范围的限制。
根据本公开的一种总体上的发明构思，提供一种射线检查设备，包括：支撑框架，所述支撑框架内形成适用于检查目标的检查空间，所述检查空间具有与外部连通的入口和出口；传输通道，适用于承载所述目标穿过所述检查空间移动；第一屏蔽门帘和第二屏蔽门帘，分别安装在所述入口和出口处；以及驱动机构，安装在所述支撑框架上，并被构造成响应于所述目标靠近或者离开所述入口和出口中的至少一个，驱动所述第一屏蔽门帘和第二屏蔽门帘中的至少一个移动，以打开或者关闭所述入口或者出口中的至少一个。
图1示出了本公开的一种示例性实施例的射线检查设备的立体示意图；图2示出了图1所示的射线检查设备的目标检查过程的简易示意图。
在一种示例性实施例中，参见图1-2，射线检查设备100适用于在车站、机场、体育场、商场等人员流动性大的场所检查行李箱、包裹、手提包之类的目标200中是否存在毒品、爆炸物之类的违禁物品。射线检查设备100包括：支撑框架1、传输机构2、第一屏蔽门帘3、第二屏蔽门帘4以及驱动机构5。支撑框架1内形成适用于检查目标200的检查空间11，所述检查空间11具有与外部连通的入口111和出口112。支撑框架1上设有由屏蔽材料制成的壳体，以防止射线泄露。传输机构2适用于承载所述目标200穿过所述检查空间11移动。在支撑框架上安装有例如CT机之类的X射线发射和接收装置，以对由传输机构2传输到检查空间11的目标200进行X射线扫描检查。第一屏蔽门帘3和第二屏蔽门帘4分别安装在所述检查空间11的入口111和出口112处。驱动机构5安装在所述支撑框架1上，例如安装在支撑框架1的顶壁框架14上，并被构造成被构造成响应于所述目标靠近或者离开所述入口111和入口112中的至少一个，驱动所述第一屏蔽门帘3和第二屏蔽门帘4中的至少一个移动，以打开或者关闭所述入口3或者出口4中的至少一个。射线检查设备100还包括适用于接收各种传感器的电信号并控制射线检查设备的相关装置(例如CT机、驱动机构等)操作的控制器。
支撑框架1可以包括位于两侧的多个直立框架13和位于直立框架13 上部的多个顶部框架14。直立框架13安装在基座15上传输机构2包括安装在安装框架1的入口111外部的输入传输机构21、位于检查空间11内的内部传输机构22、和在安装框架1的出口112外部的输出传输机构23。输入传输机构21、内部传输机构22和输出传输机构23中的每一个可以包括胶带机，以循环转动。被检查的目标200放置的输入传输机构21上，由输入传输机构21经入口111传输到内部传输机构22，在检查空间11内被检查之后，再由内部传输机构22经出口112输送到输出传输机构23，完成对目标200的扫描检查过程。也就是说，所述目标200在所述传输机构2中经所述入口111进入所述检查空间11，并经扫描检查之后从所述出口112在所述传输机构2上移动到所述检查空间11的外部。
这样，在本公开实施例的射线检查设备中，在被检查的目标200经过入口111之前，根据目标200靠近入口111的事件发生，第一屏蔽门帘3可以被驱动机构5提升，从而允许目标200平稳地通过入口111；并且在目标通过入口111之后，根据目标离开入口111的事件发生，驱动机构5再将第一屏蔽门帘3落下；在检查空间11内完成对目标的扫描检查之后，根据目标200靠近出口112的事件发生，第二屏蔽门帘4可以被驱动机构5提升，从而允许目标200平稳地通过出口112；并且在目标通过出口112之后，根据目标离开出口112的事件发生，驱动机构5再将第二屏蔽门帘3落下，从而防止检查空间内的X射线泄露到外部造成对周围环境的辐射污染。
在一种示例性实施例中，参见图1-2，射线检查设备100还包括第一检测装置7，所述驱动机构5响应于所述第一检测装置检测7到被承载在所述传输机构2的输入传输机构21上的目标200在所述支撑框架1的外侧在移动方向F上靠近位于所述入口11处的第一屏蔽门帘3，驱动所述第一屏蔽门帘3上升，即第一屏蔽门帘处于打开状态，以允许所述目标200在所述传输机构2上移动到所述检查空间11的内部。
在一种示例性实施例中，参见图1-2，射线检查设备100还包括第二检测装置8，所述驱动机构5响应于所述第二检测装置8检测到被承载在所述传输机构2的内部传输机构22上的目标200在所述支撑框架1的内部离开位于所述入口111处的第一屏蔽门帘3，驱动位于所述第一屏蔽门 帘3下降到初始位置，即第一屏蔽门帘处于关闭状态，以防止射线泄露。
在一种示例性实施例中，参见图1-2，射线检查设备100还包括第三检测装置9，所述驱动机构5响应于所述第三检测装置9检测到被承载在所述传输机构2上的目标在所述支撑框架1的内部靠近位于所述第二屏蔽门帘4，驱动位于所述第二屏蔽门4帘上升，以允许所述目标在所述传输机构2上移动到所述检查空间11的外部。
在一种示例性实施例中，参见图1-2，射线检查设备100还包括第四检测装置10，所述驱动机构5响应于所述第四检测装置10检测到被承载在所述传输机构2上的目标在所述支撑框架1的外部离开所述第二屏蔽门帘4，驱动所述第二屏蔽门帘4下降到初始位置。
可以理解，由第一检测装置7、第二检测装置8、第三检测装置9和第四检测装置10分别检测目标200到达不同的预定位置，即靠近所述入口111、离开所述入口111、靠近所述出口112、离开所述出口112的位置。
在一种示例性实施例中，第一检测装置7、第二检测装置8、第三检测装置9和第四检测装置10中的每一个包括：分别安装在所述支撑框架1的与所述目标200的移动方向F垂直的两侧的发光器件、和适用于接收所述发光器件发出的光接收器件。在目标200移动到遮蔽光发射器件发射的光束时，光接收器件接收的光束减少甚至没有光束到达光接收器件，从而检测到目标200移动到预定位置。控制器根据光接收器件产生的表示目标到达预定位置的电信号，控制驱动机构驱动第一或第二屏蔽门帘上升、或者下降、或者保持在原来的状态。
图3示出了图1所示的射线检查设备的局部正视图；图4示出了图3所示的A部分的放大示意图；图5示出了图4所示的B部分的放大示意图；图6示出了图1所示的射线检查设备的另一种局部正视图；图7示出了图6所示的C部分的放大示意图；图8示出了图1所示的射线检查设备的局部侧视图；图9示出了图8所示的D部分的放大示意图；图10示出了图1所示的射线检查设备的局部俯视图；图11示出了图10所示的E部分的放大示意图。
在一种示例性实施例中，参见图2，所述驱动机构5包括适用于分别驱动第一屏蔽门帘3和第二屏蔽门帘4整体上上升或者下降的第一驱动机 构和第二驱动机构。
在一种示例性实施例中，参见图3-11，所述第一驱动机构和和第二驱动机构中的任一个包括：安装在所述支撑框架1上的驱动器51；以及传动机构52，所述驱动器51通过所述传动机构52驱动所述屏蔽门帘3上升或者下降，以打开或者关闭入口111。
在一种示例性实施例中，参见图3-11，所述驱动器51包括适用于驱动传动机构52的电机。所述传动机构包括：从动轴527、两个第一滚轮521、两个第二滚轮522和传送带523、以及结合部524。从动轴525设置在所述支撑框架1的顶部框架14的上部，并通过减速机构5273和联轴器5272在所述电机的驱动下转动。两个第一滚轮521分别安装在所述从动轴525的两端附近，以随所述从动轴525转动。每个第一滚轮通过轴承机构5271安装在支撑框架1的顶部框架14的上部。两个第二滚轮522分别安装在所述支撑框架1的直立框架13上并位于分别两个第一滚轮521的下部。两个传送带523分别环绕在两个第一滚轮521和两个第二滚轮522上，由此形成两组传送带机构。所述结合部524的两端分别连接至两个所述传送带523上，所述屏蔽门帘3连接至所述结合部524，使得所述屏蔽门帘3随所述传送带523上下移动。
在一种示例性实施例中，参见图4-5和8-9，每个第二滚轮522可转动地安装在固定轴5221上，固定轴5221利用例如螺栓之类的连接件5222安装在位于直立框架13之间的支撑座133上。可以通过调节螺栓5223调整固定轴5221相对于直立框架13的高度，从而调节传送带的张紧程度。
在一种示例性实施例中，参见图3-11，所述结合部524包括：长条形的主体部5241，所述屏蔽门帘3的上端通过多个例如螺栓之类的连接件5245连接至所述主体部5241上；两个引导机构5242，分别设置在所述主体部5241的两端，每个所述引导机构5242适用于与所述直立框架13配合，以引导所述结合部5241沿所述直立框架13上下移动。这样，在驱动器51通过从动轴527带动两个第一滚轮521转动，从而进一步驱动输送带523上下移动，使得屏蔽门帘3的上端、进而整体上上下移动。
虽然上面描述了传动机构包括第一滚轮、第二滚轮和传送带的实施例，但本公开也不局限于此。在一种可替换的实施例中，传动机构可以包括由 电机驱动的涡轮、以及与涡轮配合的蜗杆，结合部安装在蜗杆上。这样，电机驱动涡轮转动，通过涡轮与蜗杆的啮合，将电机的转动转换成蜗杆的直线移动，从而使蜗杆驱动屏蔽门帘升降。在另一种可替换的实施例中，可以采用气压缸或者液压缸的活塞杆驱动结合部上下往复直线移动，从而驱动屏蔽门帘升降。
在一种示例性实施例中，每个所述引导机构5242包括第一滑轮装置5244，第一滑轮装置5244设置在所述主体部5241的两端，并延伸到形成在直立框架13的引导槽131中，以抵靠在所述引导槽131的一个侧壁上转动，所述引导槽131在直立框架13上沿直立方向延伸。这样可以防止屏蔽门帘3前后摆动。
在一种可替换的示例性实施例中，每个所述引导机构包括滑动块，所述滑动块设置在所述主体部5241的两端，并可滑动地延伸到形成在直立框架13的引导槽131中，所述引导槽在直立框架上沿直立方向延伸。
在一种示例性实施例中，参见图3-11，所述引导结构5242还包括：第二滑轮装置5243，所述第二滑轮装置5243安装在所述主体部5241的两端的下侧，所述第二滑轮装置5243的滑轮与所述引导槽131的底部132可转动地弹性接触。这样可以防止屏蔽门帘3左右摆动，保持屏蔽门帘3以稳定的姿态上下移动。
在一种示例性实施例中，所述传动机构52还包括配重525，所述配重525的重量取决于结合部4和屏蔽门帘3的总重量，并且连接在两个传送带523之间，并位于与连接所述结合部524的一侧相对的另一侧上，以平衡所述结合部524和屏蔽门帘3的重量。通过设置配重525，可以降低驱动屏蔽门帘移动的力，从而降低驱动器的功率。
在一种示例性实施例中，参见图3-8，射线检查设备100还包括限位装置526，所述限位装置526适用于限制所述结合部524在上下方向上的移动范围，进而限制屏蔽门帘3的升降范围。具体而言，所述限位装置526包括：安装在所述支撑框架1的直立框架13上的第一接近开关5261；以及安装在所述结合部524上的配合开关5262，所述驱动机构5响应于所述配合开关5262接近所述第一接近开关5261停止驱动所述屏蔽门帘3上升。进一步地，所述限位装置526还包括安装在所述支撑框架1的直立框架13 上、并位于第一接近开关5261下方的第二接近开关5263，所述驱动机构5响应于所述配合开关5262接近所述第二接近开关5263停止驱动所述屏蔽门帘3下降。也就是说，当所述配合开关5262接近所述第一接近开关5261时，所述屏蔽门帘3停止上升；当所述配合开关5262接近所述第二接近开关5263，所述屏蔽门帘3停止下降。这样，屏蔽门帘3的上端的移动范围限制在第一接近开关5261和第二接近开关5263之间的距离内，也就是说，屏蔽门帘3整体上的最大升降范围为第一接近开关5261和第二接近开关5263之间的距离。在一种示例性实施例中，第一接近开关5261和第二接近开关5263与配合开关5262采用电感感应的方式电磁耦合。例如，第一接近开关5261和第二接近开关5263中的每一个都包括发射线圈，配合开关5262包括与发射线圈电磁耦合的接受线圈。在一种可替换的实施例中，第一接近开关5261和第二接近开关5263与配合开关5262采用电接触方式的电连接。
在一种示例性实施例中，所述第一屏蔽门帘3和第二屏蔽门帘4都包括叠置的多层材料，所述多层材料中的一层材料由含铅的材料制成。例如，屏蔽门帘可以是外部轮廓表现为一个整体的单块板，这样可以提高第一和第二屏蔽门帘的X射线屏蔽性能。
图12示出了本公开的另一种示例性实施例的射线检查设备的局部正视图；图13示出了图12所示的射线检查设备的局部正视图，图中部分屏蔽门帘未示出；图14示出了图13所示的H部分的放大示意图；图15示出了沿图12所示的G-G线的剖视图；图16示出了图15所示的I部分的放大示意图；图17示出了图15所示的J部分的放大示意图。
在一种示例性实施例中，参见图1-2和12-17，所述第一驱动机构和和第二驱动机构中的任一个包括：安装在所述支撑框架1上的驱动器51’；以及传动机构52’，所述驱动器51通过所述传动机构52驱动所述屏蔽门帘3上升或者下降，以打开或者关闭第一入口。
在一种示例性实施例中，参见图1-2和12-17，所述驱动器51’包括适用于驱动传动机构52’的电机。所述传动机构包括：第一滚轮521’，安装在所述支撑框架1的上部，并在所述电机通过联轴器529’的驱动下转动；第二滚轮522’，安装在所述支撑框架1上并位于所述第一滚轮521’的下部； 传送带523’，环绕在所述第一滚轮521’和第二滚轮522’上；以及结合部524’，所述屏蔽门帘3通过所述结合部524’连接至所述传送带523’，使得所述屏蔽门帘3整体上随所述传送带523’上下移动。
在一种示例性实施例中，参见图12-17，所述结合部524’包括：主体部5241’，所述主体部5241’连接至所述传送带523’；一对夹持件5242’，该对夹持件5242’利用螺栓5243’夹持所述屏蔽门帘的上端，并连接至所述主体部5241’上。这样，在驱动器51’带动第一滚轮521’转动，从而进一步驱动输送带523’上下移动，使得屏蔽门帘3的上端、进而整体上上下移动。
虽然上面描述了传动机构包括第一滚轮、第二滚轮和传送带的实施例，但本公开也不局限于此。在一种可替换的实施例中，传动机构可以包括由电机驱动的涡轮、以及与涡轮配合的蜗杆，结合部安装在蜗杆上。这样，电机驱动涡轮转动，通过涡轮与蜗杆的啮合，将电机的转动转换成蜗杆的直线移动，从而使蜗杆驱动屏蔽门帘升降。在另一种可替换的实施例中，可以采用气压缸或者液压缸的活塞杆驱动结合部上下往复直线移动，从而驱动屏蔽门帘升降。
在一种示例性实施例中，所述主体部5241’具有大致的等腰三角形或者等腰梯形形状，主体部较窄的上部通过可松紧的螺栓机构5231’连接至输送带523’，较宽的下部连接至所述一对夹持件5242’的大致中间的部位。这样，利用一个输送带523’驱动屏蔽门帘3移动，并且可以保持屏蔽门帘3以稳定的姿态上下移动。
在一种示例性实施例中，所述传动机构52’还包括第一引导结构525’，所述第一引导机构适用于引导所述结合部524的上下移动。在一种示例性实施例中，所述第一引导机构525’包括：安装在所述支撑框架1上的导轨5251’；以及安装在所述结合部524’上的引导块5252’。例如，可以在导轨5251’上形成在上下方向上延伸的引导槽，在引导块5252’的一部分插入引导槽中。这样，结合部524’和屏蔽门帘3可以在上下方向上沿直线移动，可以防止屏蔽门帘3发生扭转。在一种可替换的实施例中，第一引导机构包括形成在支撑框架1的一对直立框架13内侧、并上下延伸的引导槽，夹持件5242’的两端分别插入到引导槽中，从而引导屏蔽门帘的升降操作。
在一种示例性实施例中，所述传动机构52’还包括配重526’，所述配 重526’的重量取决于结合部4和屏蔽门帘3的总重量，并且连接在所述传送带523’的与连接所述结合部524’的一侧相对的另一侧上，以平衡所述结合部524’和屏蔽门帘3的重量。通过设置配置526’，可以降低驱动屏蔽门帘移动的力，从而降低驱动器的功率。
在一种示例性实施例中，所述传动机构52’还包括第二引导结构527’，所述第二引导机构527’适用于引导所述配重526’的上下移动。在一种示例性实施例中，所述第二引导机构527’包括：安装在所述支撑框架1上的导轨；以及安装在配置4上的引导块。这样，配置526’可以在上下方向上沿直线移动，
在一种示例性实施例中，参见图12-17，射线检查设备100还包括限位装置528’，所述限位装置528’适用于限制所述结合部524’在上下方向上的移动范围，进而限制屏蔽门帘的升降范围。具体而言，所述限位装置528’包括：安装在所述支撑框架1上的第一接近开关5281’；以及安装在所述结合部524’上的配合开关5282’，所述驱动机构5响应于所述配合开关5282’接近所述第一接近开关5281’停止驱动所述屏蔽门帘3上升。进一步地，所述限位装置528’还包括安装在所述支撑框架1上的第二接近开关5283’，所述驱动机构5响应于所述配合开关5282’接近所述第二接近开关5283’停止驱动所述屏蔽门帘3下降。也就是说，当所述配合开关5282’接近所述第一接近开关5281’时，所述屏蔽门帘3停止上升；当所述配合开关5282’接近所述第二接近开关5283’，所述屏蔽门帘3停止下降。这样，屏蔽门帘3的上端的移动范围限制在第一接近开关5281’和第二接近开关5283’之间的距离内，也就是说，屏蔽门帘3整体上的最大升降范围为第一接近开关5281’和第二接近开关5283’之间的距离。在一种示例性实施例中，第一接近开关5281’和第二接近开关5283’与配合开关5282’采用电感感应的方式电磁耦合。例如，第一接近开关5281’和第二接近开关5283’中的每一个都包括发射线圈，配合开关4282’包括与发射线圈电磁耦合的接受线圈。在一种可替换的实施例中，第一接近开关5281’和第二接近开关5283’与配合开关5282’采用电接触方式的电连接。
虽然上面描述了第一驱动机构53驱动入口111处的第一屏蔽门帘3升降的实施例，但本领域的技术人员可以理解，具有相同或者类似结构的 第二驱动机构54可以驱动出口112处的第二屏蔽门帘4的升降，并且适用于第一屏蔽门帘3的驱动器和传动机构可以与适用于第二屏蔽门帘4的驱动器和传动机构相同或者类似。在一种可替换的示例性实施例中，可以利用一个驱动器通过离合器可选择地驱动第一屏蔽门帘3和第二屏蔽门帘4。也就是说，第一屏蔽门帘3和第二屏蔽门帘4共用一个驱动机构5。
根据本公开的另一方面的实施例，提供一种利用上述任一实施例所述的射线检查设备100检查目标200的方法，参见图1和2，包括如下步骤：
将待检测的目标200放置在所述传输机构的输入传输机构21上，使得传输机构驱动目标200在移动方向F上移动；
待检查的所述目标200移动到靠近所述入口111时，触发第一检测装置7，所述驱动机构5驱动所述第一屏蔽门帘3整体上上升，以允许所述目标200在所述传输机构2的输入传输机构21上沿移动方向F移动到所述检查空间11内部的内部传输机构22上；
在所述传输机构2的内部传输机构22上的目标200在所述支撑框架1的内部离开所述第一屏蔽门帘3时，触发第二检测装置8，驱动机构5驱动所述第一屏蔽门帘3整体上下降到初始位置，即第一屏蔽门帘3的下端与传输机构2接触的位置；
对在所述检查空间11内在传输机构2的内部传输机构22上移动的目标200进行放射性扫描检查；以及
在已检查的目标200在所述检查空间11内移动到靠近所述出口112时，触发第三检测装置9，所述驱动机构驱动第二屏蔽门帘4整体上上升，以允许所述目标200在所述传输机构2的内部传输机构22上沿移动方向F继续移动到所述检查空间11的外部的输出传输机构23上。
进一步地，在所述传输机构2的输出传输机构23上的目标在所述支撑框架1的外部离开位于所述第二屏蔽门帘4时，触发第四检测装置10，驱动机构驱动位于所述第二屏蔽门帘4整体上下降到初始位置，即第二屏蔽门帘4的下端与传输机构2接触的位置。
根据本公开的上述实施例提供的射线检查设备，由于驱动机构可以根据目标靠近或者离开屏蔽门帘事件的发生，驱动屏蔽门帘的升降，可以确保重量较轻的目标能够顺利进入到检查空间中以进行后续的射线扫描接 触；在对目标进行检查的同时可以实现对检查空间内的X射线进行更严密的屏蔽，确保射线不能泄露到周围环境中。进一步地，即便为了实现更严密的屏蔽将屏蔽门帘制作地较重而且具有较好的刚性，并包括刚性较大的支撑板，在目标被安检过程时，也可以避免了目标不能顶开屏蔽门帘的情况发生，更不会有漏X射线的可能。由于目标从入口进入检查空间，从出口移出检查空间，可以实现连续检查。
本领域的技术人员可以理解，上面所描述的实施例都是示例性的，并且本领域的技术人员可以对其进行改进，各种实施例中所描述的结构在不发生结构或者原理方面的冲突的情况下可以进行自由组合。
虽然结合附图对本公开进行了说明，但是附图中公开的实施例旨在对本公开优选实施方式进行示例性说明，而不能理解为对本公开的一种限制。虽然本公开发明构思的一些实施例已被显示和说明，本领域普通技术人员将理解，在不背离本总体实用新型构思的原则和精神的情况下，可对这些实施例做出改变，本公开的范围以权利要求和它们的等同物限定。
Claims (28)
- 一种射线检查设备，包括：支撑框架(1)，所述支撑框架内形成适用于检查目标(200)的检查空间(11)，所述检查空间具有与外部连通的入口(111)和出口(112)；传输通道(2)，适用于承载所述目标穿过所述检查空间移动；第一屏蔽门帘(3)和第二屏蔽门帘(4)，分别安装在所述入口和出口处；以及驱动机构(5)，安装在所述支撑框架上，并被构造成响应于所述目标靠近或者离开所述入口和出口中的至少一个，驱动所述第一屏蔽门帘和第二屏蔽门帘中的至少一个移动，以打开或者关闭所述入口或者出口中的所述至少一个。
- 根据权利要求1所述的射线检查设备，还包括第一检测装置(7)，所述驱动机构响应于所述第一检测装置检测到被承载在所述传输通道上的目标在所述支撑框架的外侧靠近所述第一屏蔽门帘，驱动所述第一屏蔽门帘上升，以允许所述目标在所述传输通道上移动到所述检查空间的内部。
- 根据权利要求1或2所述的射线检查设备，还包括第二检测装置(8)，所述驱动机构响应于所述第二检测装置检测到被承载在所述传输通道上的目标在所述支撑框架的内部离开位于所述第一屏蔽门帘，驱动位于所述第一屏蔽门帘下降到初始位置。
- 根据权利要求1-3中的任一项所述的射线检查设备，还包括第三检测装置(9)，所述驱动机构响应于所述第三检测装置检测到被承载在所述传输机构上的目标在所述支撑框架的内部靠近位于所述第二屏蔽门帘，驱动位于所述第二屏蔽门帘上升，以允许所述目标在所述传输机构上移动到所述检查空间的外部。
- 根据权利要求1-4中的任一项所述的射线检查设备，还包括第四检测装置(10)，所述驱动机构响应于所述第四检测装置检测到被承载在所述传输机构上的目标在所述支撑框架的外部离开所述第二屏蔽门帘，驱动所述第二屏蔽门帘下降到初始位置。
- 根据权利要求5所述的射线检查设备，所述第一、第二、第三和第 四检测装置包括：分别安装在所述支撑框架的与所述目标的移动方向垂直的两侧的发光器件、和适用于接收所述发光器件发出的光接收器件。
- 根据权利要求1-6中的任一项所述的射线检查设备，其中，所述驱动机构包括适用于分别驱动第一屏蔽门帘和第二屏蔽门帘整体上上升或者下降的第一驱动机构(53)和第二驱动机构(54)。
- 根据权利要求7所述的射线检查设备，其中，所述第一驱动机构和和第二驱动机构中的任一个包括：驱动器(51，51’)，安装在所述支撑框架上；以及传动机构(52，52’)，所述驱动器通过所述传动机构驱动所述屏蔽门帘上升或者下降。
- 根据权利要求8所述的射线检查设备，其中，所述驱动器包括电机，所述传动机构包括：从动轴(527)，安装在所述支撑框架的上部，并在所述电机的驱动下转动；两个第一滚轮(521)，分别安装在所述从动轴的两端附近，并随所述从动轴转动；两个第二滚轮(522)，分别安装在所述支撑框架的两个相对的直立框架(13)上，并分别位于两个所述第一滚轮的下部；两个传送带(523)，分别环绕在两个所述第一滚轮和两个第二滚轮上；以及结合部(524)，所述结合部的两端分别连接至两个所述传送带上，所述屏蔽门帘连接至所述结合部，使得所述屏蔽门帘随所述传送带上下移动。
- 根据权利要求9所述的射线检查设备，其中，所述结合部包括：长条形的主体部(5241)，所述屏蔽门帘的上端连接至所述主体部上；以及两个引导机构(5242)，分别设置在所述主体部的两端，每个所述引导机构适用于与所述直立框架配合，以引导所述结合部沿所述直立框架上下移动。
- 根据权利要求10所述的射线检查设备，其中，每个所述引导机构包括：第一滑轮装置(5244)，设置在所述主体部的两端，并延伸到形成在直立框架的引导槽(131)中，以抵靠在所述引导槽的一个侧壁上转动，所述引导槽在直立框架上沿直立方向延伸。
- 根据权利要求10所述的射线检查设备，其中，每个所述引导机构包括：滑动块，设置在所述主体部的两端，并可滑动地延伸到形成在直立框架的引导槽(131)中，所述引导槽在直立框架上沿直立方向延伸。
- 根据权利要求11-12中的任一项所述的射线检查设备，其中，所述引导结构还包括：第二滑轮装置(5243)，安装在所述主体部的两端的下侧，所述第二滑轮装置的滑轮与所述引导槽的底部可转动地接触。
- 根据权利要求9-13中的任一项所述的射线检查设备，其中，所述传动机构还包括配重(525)，所述配重连接在两个所述传送带之间，以平衡所述结合部和屏蔽门帘的重量。
- 根据权利要求9-14中的任一项所述的射线检查设备，还包括限位装置(526)，所述限位装置适用于限制所述结合部在直立方向上的移动范围。
- 根据权利要求15所述的射线检查设备，其中，所述限位装置包括：第一接近开关(5261)，安装在所述支撑框架上；以及配合开关(5262)，安装在所述结合部上，所述驱动机构响应于所述配合开关接近所述第一接近开关停止驱动所述屏蔽门帘上升。
- 根据权利要求16所述的射线检查设备，其中，所述限位装置包括：第二接近开关(5263)，安装在所述支撑框架上，所述驱动机构响应于所述配合开关接近所述第二接近开关停止驱动所述屏蔽门帘下降。
- 根据权利要求8所述的射线检查设备，其中，所述驱动器包括电机，所述传动机构包括：第一滚轮(521’)，安装在所述支撑框架的上部，并在所述电机的驱动 下转动；第二滚轮(522’)，安装在所述支撑框架上并位于所述第一滚轮的下部；传送带(523’)，环绕在所述第一滚轮和第二滚轮上；以及结合部(524’)，所述屏蔽门帘通过所述结合部连接至所述传送带，使得所述屏蔽门帘随所述传送带上下移动。
- 根据权利要求18所述的射线检查设备，其中，所述结合部包括：主体部(5241’)，所述主体部的连接至所述传送带；一对夹持件(5242’)，该对夹持件夹持所述屏蔽门帘的上端，并连接至所述主体部上。
- 根据权利要求18-19中任一项所述的射线检查设备，其中，所述传动机构还包括第一引导结构(525’)，所述第一引导机构适用于引导所述结合部的上下移动。
- 根据权利要求20所述的射线检查设备，其中，所述第一引导机构包括：导轨(5251’)，安装在所述支撑框架上；以及引导块(5252’)，安装在所述结合部上。
- 根据权利要求18-21的任一项所述的射线检查设备，其中，所述传动机构还包括配重(526’)，所述配重连接在所述传送带的与连接所述结合部的一侧相对的另一侧上，以平衡所述结合部和屏蔽门帘的重量。
- 根据权利要求22所述的射线检查设备，其中，所述传动机构还包括第二引导结构(527’)，所述第二引导机构适用于引导所述配重的上下移动。
- 根据权利要求18-23中的任一项所述的射线检查设备，其中，所述传动机构还包括限位装置(528’)，所述限位装置适用于限制所述结合部在上下方向上的移动范围。
- 根据权利要求24所述的射线检查设备，其中，所述限位装置包括：第一接近开关(5281’)，安装在所述支撑框架上；以及配合开关(5282’)，安装在所述结合部上，所述驱动机构响应于所述配合开关接近所述第一接近开关停止驱动所述屏蔽门帘上升。
- 根据权利要求24或25所述的射线检查设备，其中，所述限位装置还包括：第二接近开关(5283’)，安装在所述支撑框架上，所述驱动机构响应于所述配合开关接近所述第二接近开关停止驱动所述屏蔽门帘下降。
- 一种利用根据权利要求1-26中的任一项射线检查设备检查目标的方法，包括：将待检测的目标放置在所述传输机构上；待检查的所述目标移动到靠近所述入口时，所述驱动机构驱动所述第一屏蔽门帘整体上上升，以允许所述目标在所述传输机构上移动到所述检查空间的内部；在所述传输机构上的目标在所述支撑框架的内部离开所述第一屏蔽门帘时，驱动机构驱动所述第一屏蔽门帘整体上下降到初始位置；对在所述检查空间内移动的目标进行放射性检查；以及在已检查的目标在所述检查空间内移动到靠近所述出口时，所述驱动机构驱动所述第二屏蔽门帘整体上上升，以允许所述目标移动到所述检查空间的外部。
- 根据权利要求27所述的方法，还包括如下步骤：在所述目标在所述支撑框架的外部离开位于所述第二屏蔽门帘时，所述驱动机构驱动所述第二屏蔽门帘整体上下降到初始位置。
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