WO2022206115A1 - 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
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- WO2022206115A1 WO2022206115A1 PCT/CN2022/071715 CN2022071715W WO2022206115A1 WO 2022206115 A1 WO2022206115 A1 WO 2022206115A1 CN 2022071715 W CN2022071715 W CN 2022071715W WO 2022206115 A1 WO2022206115 A1 WO 2022206115A1
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- WIPO (PCT)
- Prior art keywords
- screen door
- door curtain
- inspection apparatus
- radiographic inspection
- target
- Prior art date
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- 238000007689 inspection Methods 0.000 title claims abstract description 149
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 152
- 230000004044 response Effects 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims description 59
- 238000001514 detection method Methods 0.000 claims description 32
- 230000007723 transport mechanism Effects 0.000 claims description 17
- 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
- 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 5
- 239000000463 material Substances 0.000 description 4
- 230000005855 radiation 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
- 230000008093 supporting effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 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
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Classifications
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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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
-
- 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
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 opening communicating with the outside; a transmission channel, adapted to carry the target for movement through the inspection space; a screen door mounted at the opening; and a drive mechanism mounted on the support frame and configured to be responsive to the target approaching or moving away from the opening, and driving the screen door curtain to move to open or close the opening.
- the radiographic inspection apparatus further includes a first detection device, and the driving mechanism detects that the target carried on the transport channel is outside the support frame in response to the first detection device detecting that the target is carried on the transport channel.
- the screen door curtain is driven upward to allow the object to move on the transport channel 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 transport channel is inside the support frame in response to the second detection device Leaving the screen door curtain, driving the screen door curtain to descend to the initial position.
- the radiographic inspection apparatus further includes a third detection device, and the transmission mechanism rotates in a reverse direction to drive the target in response to the third detection device detecting the target carried on the transmission mechanism. The target moves towards the 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 first, second and third detection devices include: light emitting devices respectively installed on both sides of the support frame perpendicular to the moving direction of the target, and adapted to receive The light-emitting device emits a light-receiving device.
- 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 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, the upper end of the screen door curtain is connected to the main body portion; and two guide mechanisms, respectively provided on the main body portion At both ends, each of the guiding 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 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 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, which is connected to the conveyor belt; and a pair of clamping parts, the pair of clamping parts clamps 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.
- 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 inside of the inspection space;
- the driving mechanism drives the screen door curtain as a whole to descend to the initial position
- the transfer mechanism drives the inspected object toward the opening
- the drive 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 step of: when the inspected object leaves the screen door curtain outside the support frame, a driving mechanism drives the screen door curtain as a whole to descend to an initial position Location.
- 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 opening communicating with the outside; a transmission a passageway adapted to carry the target for movement through the inspection space; a screen door curtain mounted at the opening; and a drive mechanism mounted on the support frame and configured to be responsive to the target approaching or leaving The opening is driven to move the screen door curtain 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 an 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 opening 111 of the inspection space 11 .
- a 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 actuate the shield in response to the target 200 approaching or leaving the opening 111
- the door curtain 3 moves to open or close the 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 transfer mechanism 2 includes an input transfer mechanism 21 installed outside the opening 111 of the mounting frame 1 , and an internal transfer 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 opening 111 in the conveying mechanism 2, and moves to the outside of the inspection space 11 after being scanned and inspected.
- the screen door curtain 3 can be lifted by the driving mechanism 5, thereby allowing the object 200 to smoothly Pass through the opening 111; and after the target passes through the opening 111, according to the occurrence of the event that the target leaves the opening, the driving mechanism 5 will drop the screen door curtain 3 again; after the scanning inspection of the target is completed in the inspection space 111, the target moves towards the direction of the opening 111, And according to the occurrence of the event that the target 200 approaches the opening 111, the screen door curtain 3 can be lifted by the driving mechanism 5, thereby allowing the target 200 to pass through the opening smoothly; and after the target passes through the opening, according to the occurrence of the event that the target leaves the opening, the driving mechanism 5 again The screen door curtain 3 is dropped, thereby preventing the X-rays in the inspection space from leaking to the outside and causing radiation pollution to the
- 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 opening 11 in the moving direction F on the outside of the support frame 1, and drives the screen door curtain 3 to rise, that is, 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.
- the target 200 on the internal transmission mechanism 22 of the support frame 1 leaves the screen door curtain 3 located at the opening 111, and drives the screen door curtain 3 to descend to the initial position, that is, the screen door curtain is in a closed state, so as 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 said opening 111 in a direction opposite to the movement 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.
- the first detection device 7 , the second detection device 8 and the third detection device 9 respectively detect that the target 200 reaches different predetermined positions, that is, the positions close to the opening 111 and away from the opening 111 .
- each of the first detection device 7 , the second detection device 8 and the third detection device 9 includes: a moving direction F relative to the target 200 , respectively mounted on the support frame 1 .
- Light-emitting devices on two vertical sides, and light-receiving devices adapted to receive light emitted by the light-emitting devices.
- 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 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 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 opening 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 527 is arranged on the upper part of the top frame 14 of the support frame 1 and is rotated by 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 527 to rotate with the driven shaft 527 .
- 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 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.
- 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 supporting 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.
- the screen door curtain 3 comprises stacked layers of material, one layer of which is made of a lead-containing material.
- the 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.
- 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 .
- the driving mechanism includes: a driver 51' mounted on the support frame 1; and a transmission mechanism 52', the driver 51 passing through the The transmission mechanism 52 drives the screen door curtain 3 to ascend or descend 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', 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 and located at the lower part of the first roller 521'; a conveyor belt 523', which is wrapped around the first roller 521' and the second roller 522'; and a joint part 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.
- a pneumatic cylinder or a piston rod of a hydraulic cylinder may 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 move linearly 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.
- 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 opening 111 , the first detection device 7 is triggered, and the driving mechanism 5 drives the screen door curtain 3 to rise as a whole, so as to allow the object 200 to pass through the transmission mechanism 2 .
- the input transmission mechanism 21 moves along the moving direction F to the internal transmission mechanism 22 inside the inspection space 11;
- the driving mechanism 5 drives the screen door curtain 3 to descend to the initial position as a whole, that is, the screen door curtain The position where the lower end of 3 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 opening 111;
- the second detection device 8 When the inspected object 200 moves close to the opening 111, the second detection device 8 is triggered, and the driving mechanism 5 drives the screen door curtain 3 to rise as a whole, so as to allow the object 200 to move to the inspection space 11's exterior.
- the driving mechanism drives the screen door curtain 3 to descend as a whole to the initial position. Location.
- the 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. In this way, the opening solely used as the outlet can be omitted, reducing the external size of the entire radiographic inspection apparatus.
- 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.
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Abstract
Description
Claims (29)
- 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开口(111);传输通道(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),安装在所述开口处;以及驱动机构(5,5’),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开口,驱动所述屏蔽门帘移动,以打开或者关闭所述开口。
- 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屏蔽门帘,驱动位于所述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开口移动。
- 根据权利要求4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。
- 根据权利要求5所述的射线检查设备,所述第一、第二和第三检测装置包括: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: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。
- 根据权利要求7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8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9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9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10-11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8-12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8-13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14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15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: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。
- 根据权利要求17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19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。
- 根据权利要求18-20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。
- 根据权利要求21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18-22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23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18-24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25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15或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(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1-27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开口时,所述驱动机构驱动所述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;所述传输机构驱动已检查的所述目标朝向所述开口移动;以及已检查的所述目标移动到靠近所述开口时,所述驱动机构驱动所述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28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上下降到初始位置。
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GB2314773.9A GB2619858A (en) | 2021-03-30 | 2022-01-13 | Radiographic inspection apparatus and method for inspecting target |
DE112022000653.6T DE112022000653T5 (de) | 2021-03-30 | 2022-01-13 | Röntgeninspektionsvorrichtung und verfahren zur inspektion eines objekts |
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2021
- 2021-03-30 CN CN202110344168.4A patent/CN115144917A/zh active Pending
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- 2022-01-13 WO PCT/CN2022/071715 patent/WO2022206115A1/zh active Application Filing
- 2022-01-13 DE DE112022000653.6T patent/DE112022000653T5/de active Pending
- 2022-01-13 GB GB2314773.9A patent/GB2619858A/en active Pending
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JPH09127021A (ja) * | 1995-11-06 | 1997-05-16 | Ishikawajima Harima Heavy Ind Co Ltd | X線検査装置 |
CN102456143A (zh) * | 2010-10-19 | 2012-05-16 | 上海商格信息科技有限公司 | Rfid整箱货物扫描装置 |
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GB202314773D0 (en) | 2023-11-08 |
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