WO2022206101A1 - 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 PDF

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Publication number
WO2022206101A1
WO2022206101A1 PCT/CN2022/071214 CN2022071214W WO2022206101A1 WO 2022206101 A1 WO2022206101 A1 WO 2022206101A1 CN 2022071214 W CN2022071214 W CN 2022071214W WO 2022206101 A1 WO2022206101 A1 WO 2022206101A1
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WO
WIPO (PCT)
Prior art keywords
screen door
door curtain
target
inspection apparatus
support frame
Prior art date
Application number
PCT/CN2022/071214
Other languages
English (en)
French (fr)
Inventor
陈志强
张丽
程熠
黄清萍
洪明志
邱明华
张瑶
杨建学
郑磊
Original Assignee
清华大学
同方威视技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 清华大学, 同方威视技术股份有限公司 filed Critical 清华大学
Priority to GB2316439.5A priority Critical patent/GB2620536A/en
Priority to US18/284,502 priority patent/US20240159694A1/en
Priority to DE112022001025.8T priority patent/DE112022001025T5/de
Publication of WO2022206101A1 publication Critical patent/WO2022206101A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-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
    • 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
    • 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
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F7/00—Shielded cells or rooms
    • G21F7/06—Structural combination with remotely-controlled apparatus, e.g. with manipulators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/10—Different kinds of radiation or particles
    • G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
    • G01N2223/1016—X-ray
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F3/00—Shielding characterised by its physical form, e.g. granules, or shape of the material

Definitions

  • Embodiments of the present disclosure relate to a radiographic inspection apparatus, and more particularly, to a radiographic inspection apparatus suitable for inspecting a target carried on a conveying device, and a method of inspecting a target 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 a first opening communicating with the outside; a transmission a mechanism adapted to carry the target to move through the inspection space; a screen door curtain mounted at the first opening; and a drive mechanism mounted on the support frame and configured to drive the screen door curtain as a whole move to open or close the opening.
  • the driving mechanism includes: a driver mounted on the support frame; and a transmission mechanism, through which the driver drives the screen door curtain to ascend or descend.
  • 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 driving of the motor; a second roller mounted on the upper part of the support frame and rotated by the motor; on the support frame and located at the lower part of the first roller; a conveyor belt looping on the first roller and the second roller; and a joint through which the screen door curtain is connected to the conveyor belt such 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 body portion has a substantially isosceles triangle or isosceles trapezoid shape, and is connected to a substantially middle portion of the pair of clips.
  • 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 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 radiographic inspection apparatus further includes a first detection device, and the drive mechanism detects that the target carried on the transmission mechanism is on the support frame in response to the first detection device
  • the outer side of the screen door is close to the screen door curtain, and the screen door curtain is driven to rise to allow the target to move on the transfer mechanism to the interior of the inspection space.
  • the radiographic inspection apparatus further includes a second detection device, and the driving mechanism detects that the target carried on the transmission mechanism is on the support frame in response to the second detection device
  • the interior of the screen door leaves the screen door curtain, and drives the screen door curtain to descend to the initial position.
  • the radiographic inspection apparatus further includes a third detection device, and in response to the third detection device detecting the target carried on the transmission mechanism, the transmission mechanism rotates in a reverse direction to The target is driven toward the first opening.
  • the driving mechanism is reversely rotated in response to the transmission mechanism, and the second detection device detects that a target carried on the transmission mechanism is approaching inside the support frame
  • the screen door curtain is driven upward to allow the object to move on the transport mechanism to the outside of the inspection space.
  • the radiographic inspection apparatus further includes: an auxiliary screen door curtain installed at the second opening of the inspection space that communicates with the outside; and an auxiliary drive mechanism installed at the on the support frame and configured to drive the auxiliary screen door curtain to move as a whole to open or close the second opening.
  • the radiographic inspection apparatus further includes an auxiliary detection device, and the auxiliary drive mechanism detects that the target carried on the transmission mechanism is on the support frame in response to the auxiliary detection device.
  • the interior of the auxiliary screen door is close to the auxiliary screen door curtain, and the drive located in the auxiliary screen door curtain rises 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 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 auxiliary screen door leaves the auxiliary screen door curtain, and drives the auxiliary screen door curtain to descend to the initial position.
  • the first detection device, the second detection device, the third detection device, the auxiliary detection device, and the fourth detection device include: a movement with the target that is respectively installed on the support frame Light emitting devices on both sides in a vertical direction, and light receiving devices adapted to receive light emitted by the light emitting devices.
  • the screen door curtain includes stacked layers of materials, one layer of which is made of a lead-containing material.
  • a method for inspecting a target using the radiographic inspection apparatus described in any of the above embodiments including:
  • the driving mechanism drives the screen door curtain to rise as a whole, so as to allow the object to move to the interior of the inspection space;
  • the driving mechanism drives the screen door curtain to descend as a whole to the initial position
  • the transfer mechanism drives the inspected object toward the first opening
  • the driving mechanism drives the 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 following steps:
  • the driving mechanism drives the screen door curtain to descend as a whole to an initial position
  • a method of inspecting a target using the above-mentioned radiographic inspection apparatus comprising:
  • the driving mechanism drives the 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 screen door curtain to descend as a whole to the initial position
  • the auxiliary driving mechanism drives the auxiliary screen door curtain to rise as a whole to allow the object to move to the outside of the inspection space.
  • providing the method further includes the following steps:
  • the second driving mechanism drives the auxiliary screen door curtain to descend as a whole to an 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. 2;
  • FIG. 4 shows a partial front view of the radiographic inspection apparatus shown in FIG. 2 , and part of the screen door curtain is not shown in the figure;
  • Fig. 5 shows the enlarged schematic diagram of part B shown in Fig. 4;
  • Figure 6 shows a cross-sectional view along line A-A shown in Figure 3;
  • Fig. 7 shows the enlarged schematic diagram of the C part shown in Fig. 6;
  • Fig. 8 shows the enlarged schematic diagram of part D shown in Fig. 7;
  • FIG. 9 shows a schematic perspective view of a radiographic inspection apparatus according to another exemplary embodiment of the present disclosure.
  • FIG. 10 shows a simplified schematic diagram of the object inspection process of the radiographic inspection apparatus shown in FIG. 9 .
  • 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, an inspection space suitable for an inspection target is formed in the support frame, and the inspection space has a first entrance communicating with the outside a transport mechanism adapted to carry the object to move through the inspection space; a screen door curtain mounted at the first opening; and a drive mechanism mounted on the support frame and configured to drive the screen The door curtain moves as a whole to open or close the opening.
  • 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 screen door curtain 3 , 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 a first opening 111 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 screen door curtain 3 is installed at the first opening 111 of the inspection space 11 .
  • the driving 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 drive the screen door curtain 3 to move as a whole to open or close the first opening 111 .
  • 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 an upper portion of the upright frames 13 .
  • the upright frame 13 is mounted on the base 15 .
  • the transmission mechanism 2 includes an input transmission mechanism 21 installed outside the first opening 111 of the mounting frame 1 , and an internal transmission mechanism 22 located in the inspection space 11 .
  • Each of the input transfer mechanism 21 and the internal transfer mechanism 22 may include a tape conveyor for cyclic rotation.
  • 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. After being inspected in the inspection space 11, the internal transfer mechanism 22 is transported to the input transfer mechanism used as the output part. 21. Complete the scanning and checking process of the target 200. That is, the object 200 enters the inspection space 11 through the first opening 111 in the transport mechanism 2 , and is moved to the outside of the inspection space 11 after being scanned and inspected.
  • the screen door curtain 3 can be automatically lifted, thereby allowing the object 200 to smoothly pass through the first opening 111, and when the object passes through the first opening 111 After the opening 111 is opened, the driving mechanism 5 drops the screen door curtain 3 again, thereby preventing the X-rays in the inspection space from leaking to the outside and causing radiation pollution to the surrounding environment.
  • Fig. 3 shows a partial front view of the radiographic inspection equipment shown in Fig. 2;
  • Fig. 4 shows a partial front view of the radiographic inspection equipment shown in Fig. 2, and part of the screen door curtain is not shown;
  • Fig. 4 is an enlarged schematic view of part B;
  • Fig. 6 shows a side view of a driving mechanism and a screen door curtain of a radiographic inspection apparatus according to an exemplary embodiment of the present disclosure;
  • Fig. 7 shows C shown in Fig. 6 and
  • FIG. 8 shows an enlarged schematic view of part D shown in FIG. 7 .
  • the driving mechanism includes: a driver 51 mounted on the support frame 1 ; and a transmission mechanism 52 , through which the driver 51 drives the The screen door curtain 3 is raised or lowered to open or close the first opening.
  • the driver 51 includes a motor adapted to drive the transmission 52 .
  • the transmission mechanism includes: a first roller 521, which is installed on the upper part of the support frame 1 and rotates under the drive of the motor through the coupling 529; a second roller 522, which is installed on the support frame 1 and rotates.
  • a conveyor belt 523 which is wrapped around the first roller 521 and the second roller 522; and a joint 524, through which the screen door curtain 3 is connected to the conveyor belt 523 , so that the screen door curtain 3 moves up and down with the conveyor belt 523 as a whole.
  • the coupling part 524 includes: a main body part 5241 connected to the conveyor belt 523 ; a pair of clamping pieces 5242 , the pair of clamping pieces 5242 uses bolts 5243 to clamp the upper end of the screen door curtain and connect to the main body 5241.
  • the driver 51 drives the first roller 521 to rotate, thereby further driving the conveyor belt 523 to move up and down, and then move up and down as a whole.
  • 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, 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 lower portion is connected to the conveyor belt 523. to a portion approximately in the middle 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 installed on the support frame 1 ; and a guide block 5252 installed on the joint portion 524 .
  • a guide groove extending in the vertical direction may be formed in 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 both ends of the clamping member 5242 are respectively inserted into the guide grooves, thereby Guides the lifting and lowering operation of screen door curtains.
  • the transmission mechanism 52 further includes a counterweight 526, the weight of the counterweight 526 depends on the total weight of the joint portion 4 and the screen door curtain 3, and is connected to the connection of the conveyor belt 523.
  • One side of the joint portion 524 is on the opposite side to balance the weight of the joint portion 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 includes: a guide rail mounted on the support frame 1 ; and a guide block mounted on the configuration 4 . In this way, the counterweight can move in a straight line in the up and 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, thereby limiting the 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 portion 524, the driving mechanism 5 responds Cooperate with the switch 5282 to approach the first proximity switch 5281 to stop driving the screen door curtain 3 to rise.
  • the limiting device 528 further includes a second proximity switch 5283 mounted on the support frame 1 , and the driving mechanism 5 stops driving the The screen door 3 is lowered.
  • 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 screen door curtain 3 stops descending .
  • the moving 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 maximum lifting range of the screen door curtain 3 as a whole is the first proximity switch 5281 and the second proximity switch 5283.
  • the first proximity switch 5281 and the second proximity switch 5283 and the mating switch 5282 are electromagnetically coupled 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 and the mating switch 5282 are electrically connected in an electrical contact manner.
  • 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 transmission mechanism 21 of 2 is close to the screen door curtain 3 located at the first opening 11 on the outside of the support frame 1 in the moving direction F, and drives the screen door curtain 3 to rise, that is, the screen door curtain is in the moving direction F. Open state to allow the object 200 to move on the transport mechanism 2 to the inside 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 screen door curtain 3 located at the first opening 111 inside the support frame 1, and drives the screen door curtain 3 to descend to the initial position, that is, the screen door curtain is in a closed state , to prevent radiation leakage.
  • the radiographic inspection apparatus 100 further includes a third detection device 9 , and the transmission mechanism 2 detects that the transmission mechanism 2 is carried on the transmission mechanism in response to the third detection device 9 .
  • the inspected target 200 on the internal transport mechanism 22 of 2 the target 200 is driven to move towards the first opening 111 in a direction opposite to the moving direction F.
  • the driving mechanism 5 is responsive to the reverse rotation of the transmission mechanism 2 and the detection by the second detection device 8 of being carried on the transmission mechanism 2
  • the inspected object 200 is close to the screen door curtain 3 inside the support frame 1, and the screen door curtain 3 is driven to rise to allow the object 200 to move on the transfer mechanism 2 to the inspection space 11. external.
  • 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 target 200 to be detected is placed on the input transfer mechanism 21 of the transfer mechanism, so that the transfer mechanism drives the target 200 to move in the moving direction F;
  • the driving mechanism 5 drives the screen door curtain 3 to rise as a whole, so as to allow the object 200 to be on the input transmission mechanism 21 of the transmission mechanism 2 Move along the moving direction F to the internal transport mechanism 22 inside the inspection space 11;
  • the driving mechanism 5 drives the screen door curtain 3 to descend as a whole to the initial position, that is, the screen door curtain 3 The position where the lower end of is in contact with the transmission mechanism 2;
  • the transfer mechanism 2 is rotated in the opposite direction to the moving direction to drive the inspected object 200 to move toward the first opening 111;
  • the driving mechanism 5 drives the screen door curtain 3 to rise as a whole to allow the object 200 to move to the outside of the inspection space 11 .
  • the driving mechanism drives the screen door curtain 3 to descend as a whole to the initial position .
  • FIG. 9 shows a schematic perspective view of a radiographic inspection apparatus according to another exemplary embodiment of the present disclosure
  • FIG. 10 shows a simplified schematic diagram of a target inspection process of the radiographic inspection apparatus shown in FIG. 9 .
  • the first opening 111 is used as the entrance for the target 200 to enter the inspection space 11 , and also serves as the exit for the target 200 to leave the inspection space 11 after the inspection.
  • the radiographic inspection apparatus 100 ′ of the embodiment shown in FIGS. 9 and 10 is different from the radiographic inspection apparatus 100 shown in FIGS. 1 and 2 in that, on the basis of the radiographic inspection apparatus 100 , the radiographic inspection apparatus 100 ′ further includes auxiliary Screen door curtain 4 and auxiliary drive mechanism 5'.
  • the auxiliary screen door curtain 4 is installed at the second opening 112 of the inspection space 11 that communicates with the outside;
  • the auxiliary driving mechanism 5 ′ is installed on the support frame 1 and is configured to drive the auxiliary screen door curtain 4 as a whole Moving to open or close the second opening 112 to allow the object 200 to be inspected to move on the transfer mechanism 2 through the second opening 112 to the outside of the inspection space 11 .
  • the radiographic inspection apparatus 100 ′ further includes an auxiliary detection device 9 ′, and the auxiliary drive mechanism 5 ′ is responsive to the auxiliary detection device to detect that it is carried on the transmission
  • the target 200 on the mechanism 2 drives the auxiliary screen door 4 located at the second opening 112 inside the support frame 1 close to the auxiliary screen door 4 located at the second opening 112 to raise the auxiliary screen door curtain 4 to allow the target 200 Move to the outside of the inspection space 11 on the transfer mechanism 2 .
  • the transfer mechanism 2 further includes an output transfer mechanism 23 installed outside the inspection space 11 to receive the inspected objects 200 delivered from the internal transfer mechanism 22 .
  • 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 detecting that it is carried on the
  • the target 200 on the inner transfer mechanism 22 of the transfer mechanism 2 leaves the auxiliary screen door curtain 4 outside the support frame 1 and drives the auxiliary screen door curtain 4 to descend to the initial position, that is, the auxiliary screen door curtain 4 or the second opening 112 is closed status to prevent radiation leakage.
  • the driving mechanism 5 drives the screen door curtain 3 at the first opening 111 to lift and lower
  • the auxiliary driving mechanism 5 ′ having the same or similar structure can drive the screen door curtain 3 at the second opening 112
  • the lifting and lowering of the screen door curtain 4 is assisted, and the drive and transmission mechanism suitable for the screen door curtain 3 may be the same as or similar to the drive and transmission mechanism suitable for the auxiliary screen door curtain 4 .
  • the screen door curtain 3 and the auxiliary screen door curtain 4 can be selectively driven by means of a driver through a clutch.
  • the driving mechanism 5 and the auxiliary driving mechanism 5' are suitable for driving the screen door curtain 3 and the auxiliary screen door curtain 4 to ascend or descend as a whole, respectively.
  • Any one of the driving mechanism 5 and the auxiliary driving mechanism 5 ′ includes: a driver 51 mounted on the supporting frame 1 ; and a transmission mechanism 52 , the driver 51 drives the two screen door curtains 3 through the transmission mechanism 52 A screen door curtain of and 4 is raised or lowered to open or close the entrance or exit.
  • the first detection device 7 , the second detection device 8 , the third detection device 9 , the auxiliary detection device 9 ′ and the fourth detection device include: light-emitting devices on both sides of the target 200 that are perpendicular to the moving direction F, and light-receiving devices adapted to receive 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 screen door curtain to rise, or fall, or maintain the original state according to the electrical signal generated by the light receiving device, which indicates that the target reaches the predetermined position.
  • the screen door curtain 3 or the auxiliary screen door curtain 4 comprises stacked layers of materials, one layer of which is made of a lead-containing material .
  • each screen door curtain can be a single panel whose outer contour is expressed as a whole, which can improve the X-ray shielding performance of the screen door curtain.
  • 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 driving mechanism 5 drives the screen door curtain 3 to rise as a whole, so as to allow the object 200 to move along the input transmission mechanism 21 of the transmission mechanism 2
  • the direction F moves to the internal transport mechanism 22 inside the inspection space 11;
  • the driving mechanism 5 drives the screen door curtain 3 to descend as a whole to the initial position, that is, the screen door curtain 3 is completely lowered.
  • the auxiliary driving mechanism 5 ′ drives the auxiliary screen door curtain 4 to ascend as a whole, so as to allow the object 200 to move in the conveying mechanism
  • the inner transport mechanism 2 of 2 continues to move along the movement direction F to the output transport mechanism 23 outside the examination space 11 .
  • the auxiliary driving mechanism 5 ′ drives the auxiliary screen door curtain 4 to descend as a whole. to the initial position, that is, the position where the lower end of the auxiliary screen door curtain 4 is in contact with the transmission mechanism 2 .
  • the first detection device 7 , the second detection device 8 , the third detection device 9 , the auxiliary detection device 9 ′ and the fourth detection device 10 respectively detect that the target 200 arrives at different predetermined positions, that is, close to the first opening 111 . A position away from the first opening 111 , close to the second opening 112 , and away from the second opening 112 .
  • the driving mechanism can drive the up and down of the screen door curtain, it can be ensured that the light-weight target can smoothly enter the inspection space for subsequent radiographic scanning inspection; At the same time, it can achieve tighter shielding of X-rays in the inspection space to ensure that the rays cannot leak into the surrounding environment. Further, even if 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.

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Abstract

一种射线检查设备（100）、以及检查目标（200）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）具有与外部连通的第一开口（111）；传输机构（2），适用于承载检查目标（200）穿过检查空间（11）移动；屏蔽门帘（3），安装在第一开口（111）处；以及驱动机构（5），安装在支撑框架（1）上，并被构造成驱动屏蔽门帘（3）整体移动，以打开或者关闭第一开口（111）。由于驱动机构（5）可以驱动屏蔽门帘（3）的升降，可以确保重量较轻的检查目标（200）能够顺利进入到检查空间（11）中以进行后续的射线扫描检查。

Description

射线检查设备、以及检查目标的方法
本申请要求于2021年03月30日递交的中国专利申请No.202110344188.1的优先权，其内容一并在此作为参考。
技术领域
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装置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。
背景技术
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第一开口；传输机构，适用于承载所述目标穿过所述检查空间移动；屏蔽门帘，安装在所述第一开口处；以及驱动机构，安装在所述支撑框架上，并被构造成驱动所述屏蔽门帘整体移动，以打开或者关闭所述开口。
根据本公开的一种实施例，所述驱动机构包括：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：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，所述主体部具有大致的等腰三角形或者等腰梯形形状，并且连接至所述一对夹持件的大致中间的部位。
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机构上的目标在所述支撑框架的外侧靠近所述屏蔽门帘，驱动所述屏蔽门帘上升，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机构上的目标在所述支撑框架的内部离开所述屏蔽门帘，驱动所述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，所述传输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，反向转动以驱动所述目标朝向所述第一开口移动。
根据本公开的一种实施例，所述驱动机构响应于所述传输机构反向转动、以及所述第二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所述屏蔽门帘，驱动所述屏蔽门帘上升，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：辅助屏蔽门帘，所述辅助屏蔽门帘安装在所述检查空间的与外部连通的第二开口处；以及辅助驱动机构，安装在所述支撑框架上，并被构造成驱动所述辅助屏蔽门帘整体移动，以打开或者关闭所述第二开口。
根据本公开的一种实施例，所述射线检查设备，还包括辅助检测装置，所述辅助驱动机构响应于所述辅助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所述辅助屏蔽门帘，驱动位于所述辅助屏蔽门帘上升，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辅助屏蔽门帘，驱动所述辅助屏蔽门帘下降到初始位置。
根据本公开的一种实施例，所述第一检测装置、第二检测装置、第三检测装置、辅助检测装置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，所述屏蔽门帘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。
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第一开口时，所述驱动机构驱动所述屏蔽门帘整体上升，以允许所述目标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屏蔽门帘时，驱动机构驱动所述屏蔽门帘整体下降到初始位置；
对在所述检查空间内移动的目标进行放射性检查；
所述传输机构驱动已检查的所述目标朝向所述第一开口移动；以及
已检查的所述目标移动到靠近所述第一开口时，所述驱动机构驱动所述屏蔽门帘整体上升，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：
在已检查的所述目标在所述支撑框架的外部离开所述屏蔽门帘时，驱动机构驱动所述屏蔽门帘整体下降到初始位置，
根据本公开的另一方面的实施例，提供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第一开口时，所述驱动机构驱动所述屏蔽门帘整体上升，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屏蔽门帘时，驱动机构驱动所述屏蔽门帘整体下降到初始位置；
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第二开口时，所述辅助驱动机构驱动所述辅助屏蔽门帘整体上升，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，提供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辅助屏蔽门帘时，所述第二驱动机构驱动位于所述辅助屏蔽门帘整体下降到初始位置。
附图说明
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2所示的射线检查设备的局部正视图；
图4示出了图2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5示出了图4所示的B部分的放大示意图；
图6示出了沿图3所示的A-A线的剖视图；
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7所示的D部分的放大示意图；
图9示出了本公开的另一种示例性实施例的射线检查设备的立体示意图；以及
图10示出了图9所示的射线检查设备的目标检查过程的简易示意图。
具体实施方式
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第一入口；传输机构，适用于承载所述目标穿过所述检查空间移动；屏蔽门帘，安装在所述第一开口处；以及驱动机构，安装在所述支撑框架上，并被构造成驱动所述屏蔽门帘整体移动，以打开或者关闭所述开口。
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、屏蔽门帘3、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具有与外部连通的第一开口111。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。屏蔽门帘3安装在所述检查空间11的第一开口111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，并被构造成驱动屏蔽门帘3整体移动，以打开或者关闭所述第一开口111。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的第一开口111外部的输入传输机构21、以及位于检查空间11内的内部传输机构22。输入传输机构21和内部传输机构22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输送到用做输出部分的输入传输机构21，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中经所述第一开口111进入所述检查空间11，并经扫描检查之后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经过第一开口111之前，屏蔽门帘3可以自动提升，从而允许目标200平稳地通过第一开口111，并且在目标通过第一开口111之后，驱动机构5再将屏蔽门帘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。
图3示出了图2所示的射线检查设备的局部正视图；图4示出了图2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5示出了图4所示的B部分的放大示意图；图6示出了本公开的一种示例性实施例的射线检查设备的驱动机构和屏蔽门帘的侧视图；图7示出了图6所示的C部分的放大示意图；以及图8示出了图7所示的D部分的放大示意 图。
在一种示例性实施例中，参见图1-8，所述驱动机构包括：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开口。
在一种示例性实施例中，参见图1-8，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整体随所述传送带523上下移动。
在一种示例性实施例中，参见图3-8，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，进而整体上下移动。
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。通过设置配重，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，配重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3-8，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。
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上靠近位于所述第一开口11处的屏蔽门帘3，驱动位于所述屏蔽门帘3上升，即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第一开口111处的屏蔽门帘3，驱动位于所述屏蔽门帘3下降到初始位置，即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，所述传输机构2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的内部传输机构22上的已检查的目标200，驱动目标200在与移动方向F相反的方向上朝向所述第一开口111移动。
在一种示例性实施例中，参见图1-2，所述驱动机构5响应于所述传输机构2反向转动、以及所述第二检测装置8检测到被承载在所述传输机构2上的已检查的目标200在所述支撑框架1的内部靠近所述屏蔽门帘3，驱动所述屏蔽门帘3上升，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的外部。
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移动到靠近所述第一开口111时，所述驱动机构5驱动所述屏蔽门帘3整体上升，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的内部离开所述屏蔽门帘3时，驱动机构5驱动所述屏蔽门帘3整体下降到初始位置，即屏蔽门帘3的下端与传输机构2接触的位置；
对在所述检查空间内在传输机构2的内部传输机构上移动的目标进行放射性检查；
所述传输机构2沿与移动方向相反的方向转动以驱动已检查的所述目标200朝向所述第一开口111移动；以及
已检查的所述目标200移动到靠近所述第一开口111时，所述驱动机构5驱动所述屏蔽门帘3整体上升，以允许所述目标200移动到所述检查空间11的外部。
进一步地，在传输机构反向转动的情况下，在已检查的所述目标200在所述支撑框架1的外部离开所述屏蔽门帘3时，驱动机构驱动所述屏蔽门帘3整体下降到初始位置。
图9示出了本公开的另一种示例性实施例的射线检查设备的立体示意图；图10示出了图9所示的射线检查设备的目标检查过程的简易示意图。
可以理解，在图1和2所示的射线检查设备100中，第一开口111即用做目标200进入检查空间11内的入口，也在检查结束之后用做目标200离开检查空间11的出口。
图9和10所示的实施例的射线检查设备100’与图1和2所示的射线检查设备100的不同之处在于，在射线检查设备100的基础上，射线检查设备100’还包括辅助屏蔽门帘4和辅助驱动机构5’。所述辅助屏蔽门帘4安装在所述检查空间11的与外部连通的第二开口112处；辅助驱动机构5’安装在所述支撑框架1上，并被构造成驱动所述辅助屏蔽门帘4整体移动，以打开或者关闭所述第二开口112，以允许以检查的目标200在所述传输机构2上穿过第二开口112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9-10，射线检查设备100’还包括辅助检测装置9’，所述辅助驱动机构5’响应于所述辅助检测装置检测到被承载在所述传输机构2上的目标200在所述支撑框架1的内部靠近位于所述第二开口112处的辅助屏蔽门帘4驱动位于所述第二开口112处的辅助屏蔽门帘4上升，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的外部。相应地，传输机构2还包括安装在在检查空间11的外部的输出传输机构23，以接收从内部传输机构22输送来的已检查的目标200。
在一种示例性实施例中，参见图9-10，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的内部传输机构22上的目标200在所述支撑框架1的外部离开辅助屏蔽门帘4驱动位于所述辅助屏蔽门帘4下降到初始位置，即辅助屏蔽门帘4或者第二开口112处于关闭状态，以防止射线泄露。
虽然上面描述了驱动机构5驱动第一开口111处的屏蔽门帘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辅助驱动机构5’可以驱动第二开口112处的辅助屏蔽门帘4的升降，并且适用于屏蔽门帘3的驱动器和传动机构可以与适用于辅助屏蔽门帘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屏蔽门帘3和辅助屏蔽门帘4。
在一种示例性实施例中，参见图3-10，所述驱动机构5和辅助驱动机构5’适用于分别驱动屏蔽门帘3和辅助屏蔽门帘4整体上升或者下降。驱动机构5和辅助驱动机构5’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驱动两个所述屏蔽门帘3和4的一个屏蔽门帘上升或者下降，以打开或者关闭入口或者出口。
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、辅助检测装置9’和第四检测装置包括：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，控制驱动机构驱动屏蔽门帘上升、或者下降、或者保持在原来的状态。
在一种示例性实施例中，参见图7-8，所述屏蔽门帘3或辅助屏蔽门帘4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，每个屏蔽门帘可以是外部轮廓表现为一个整体的单块板，这样可以提高屏蔽门帘的X射线屏蔽性能。
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9和10，包括如下步骤：
将待检测的目标200放置在所述传输机构2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移动到靠近所述第一开口111时，所述驱动机构5驱动屏蔽门帘3整体上升，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11的内部离开位于所述屏蔽门帘3时，驱动机构5驱动位于所述屏蔽门帘3整体下降到初始位置，即屏蔽门帘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内移动到靠近所述第二开口112时，所述辅助驱动机构5’驱动辅助屏蔽门帘4整体上升，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辅助屏蔽门帘4时，辅助驱动机构5’驱动位于所述辅助屏蔽门帘4整体下降到初始位置，即辅助屏蔽门帘4的下端与传输机构2接触的位置。
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、辅助检测装置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，即靠近所述第一开口111、离开所述第一开口111、靠近所述第二开口112、 离开所述第二开口112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检查；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。
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 (25)

  1. 一种射线检查设备(100)，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第一开口(111)；
    传输机构(2)，适用于承载所述目标穿过所述检查空间移动；
    屏蔽门帘(3)，安装在所述第一开口处；以及
    驱动机构(5)，安装在所述支撑框架上，并被构造成驱动所述屏蔽门帘整体移动，以打开或者关闭所述开口。
  2. 根据权利要求1所述的射线检查设备，其中，所述驱动机构包括：
    驱动器(51)，安装在所述支撑框架上；以及
    传动机构(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。
  3. 根据权利要求2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。
  4. 根据权利要求5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。
  5. 根据权利要求4所述的射线检查设备，其中，所述主体部具有大致的等腰三角形或者等腰梯形形状，并且连接至所述一对夹持件的大致中间的部位。
  6. 根据权利要求3-5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。
  7. 根据权利要求6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。
  8. 根据权利要求3-7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。
  9. 根据权利要求8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。
  10. 根据权利要求3-9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。
  11. 根据权利要求9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。
  12. 根据权利要求10或11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(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。
  13. 根据权利要求1-12中的任一项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机构上的目标在所述支撑框架的外侧靠近所述屏蔽门帘，驱动所述屏蔽门帘上升，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内部。
  14. 根据权利要求1-13中的任一项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机构上的目标在所述支撑框架的内部离开所述屏蔽门帘，驱动所述屏蔽门帘下降到初始位置。
  15. 根据权利要求1-14中的任一项所述的射线检查设备，还包括第三检测装置(9)，所述传输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，反向转动以驱动所述目标朝向所述第一开口移动。
  16. 根据权利要求15所述的射线检查设备，其中，所述驱动机构响应于所述传输机构反向转动、以及所述第二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所述屏蔽门帘，驱动所述屏蔽门帘上升，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。
  17. 根据权利要求1-14中的任一项所述的射线检查设备，还包括：
    辅助屏蔽门帘(4)，所述辅助屏蔽门帘安装在所述检查空间的与外部连通的第二开口处(112)；以及
    辅助驱动机构(5’)，安装在所述支撑框架上，并被构造成驱动所述辅助屏蔽门帘整体移动，以打开或者关闭所述第二开口。
  18. 根据权利要求17所述的射线检查设备，还包括辅助检测装置(9’)，所述辅助驱动机构响应于所述辅助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所述辅助屏蔽门帘，驱动位于所述辅助屏蔽门帘上升，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。
  19. 根据权利要求18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辅助屏蔽门帘，驱动所述辅助屏蔽门帘下降到初始位置。
  20. 根据权利要求16或19所述的射线检查设备，所述第一检测装置、第二检测装置、第三检测装置、辅助检测装置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。
  21. 根据权利要求1-20中的任一项所述的射线检查设备，其中，所述屏蔽门帘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。
  22. 一种利用根据权利要求1-16中的任一项所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第一开口时，所述驱动机构驱动所述屏蔽门帘整体上升，以允许所述目标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屏蔽门帘时，驱动机构驱动所述屏蔽门帘整体下降到初始位置；
    对在所述检查空间内移动的目标进行放射性检查；
    所述传输机构驱动已检查的所述目标朝向所述第一开口移动；以及
    已检查的所述目标移动到靠近所述第一开口时，所述驱动机构驱动所述屏蔽门帘整体上升，以允许所述目标移动到所述检查空间的外部。
  23. 根据权利要求22所述的方法，还包括如下步骤：
    在已检查的所述目标在所述支撑框架的外部离开所述屏蔽门帘时，驱动机构驱动所述屏蔽门帘整体下降到初始位置。
  24. 一种利用根据权利要求17-19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第一开口时，所述驱动机构驱动所述屏蔽门帘整体上升，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屏蔽门帘时，驱动机构驱动所述屏蔽门帘整体下降到初始位置；
    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第二开口时，所述辅助驱动机构驱动所述辅助屏蔽门帘整体上升，以允许所述目标移动到所述检查空间的外部。
  25. 根据权利要求24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辅助屏蔽门帘时，所述第二驱动机构驱动位于所述辅助屏蔽门帘整体下降到初始位置。
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