WO2007079675A1 - Système d'inspection pour inspecter une cargaison au moyen de rayonnements - Google Patents

Système d'inspection pour inspecter une cargaison au moyen de rayonnements Download PDF

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Publication number
WO2007079675A1
WO2007079675A1 PCT/CN2007/000066 CN2007000066W WO2007079675A1 WO 2007079675 A1 WO2007079675 A1 WO 2007079675A1 CN 2007000066 W CN2007000066 W CN 2007000066W WO 2007079675 A1 WO2007079675 A1 WO 2007079675A1
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WO
WIPO (PCT)
Prior art keywords
inspection system
main conveyor
platform
conveyor
link
Prior art date
Application number
PCT/CN2007/000066
Other languages
English (en)
French (fr)
Inventor
Kejun Kang
Haifeng Hu
Zhiqiang Chen
Shangmin Sun
Guang Yang
Fengjun Zhang
Yong Bi
Yucheng Wu
Jianjun Li
Rongxuan Liu
Original Assignee
Tsinghua University
Nuctech Company Limited
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 Tsinghua University, Nuctech Company Limited filed Critical Tsinghua University
Priority to AU2007204529A priority Critical patent/AU2007204529B2/en
Priority to US11/997,448 priority patent/US7817775B2/en
Priority to DE112007000011T priority patent/DE112007000011B4/de
Priority to GB0724497A priority patent/GB2448011B/en
Publication of WO2007079675A1 publication Critical patent/WO2007079675A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
    • 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
    • G01N23/04—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 forming images of the material
    • 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

Definitions

  • the present invention generally relates to an inspection system for inspecting cargo using radiation (radiation).
  • the present invention relates to an X-ray inspection system suitable for inspecting pallet cargo, air cargo and other bulk cargo. Background technique
  • the large air cargo inspection system is a testing equipment urgently needed by aviation customs.
  • the main method of inspection of bulk air cargo is to check out the box or use X-ray machine inspection.
  • the inspection by X-ray machine is mainly carried out by reflecting the image of the goods. Because the X-ray machine has low ray energy, the penetration is poor, and the image of the part of the cargo that is only close to the range of the depth of the source is relatively clear, and the image quality is And requirements that cannot be met by the scope of application.
  • the applicant's Chinese patent application CN1405555A entitled “Aviation Container/Tray Cargo Inspection System” discloses a cargo inspection system including a radiation source, a detector, a collimator, and a cross-arm arm.
  • a gantry-shaped gantry consisting of a vertical detector arm; a composite conveying system consisting of a plate-type main conveyor and a roller-type auxiliary conveyor; a radiation shielding system; an equipment compartment; and an operation room.
  • the roller conveyor auxiliary conveyor When loading the air container/pallet cargo, after the bottom surface of the air container/pallet cargo contacts the outermost roller of the loading roller, the roller conveyor auxiliary conveyor is started, and the cargo is conveyed to the plate by the roller. On the main conveyor, the cargo is driven by the plate-type main conveyor through the area under the gantry.
  • the roller-type auxiliary conveyor and the plate-type main conveyor are highly fixed, and the cargo must be transported between the truck and the roller-type auxiliary conveyor by using a special transfer vehicle such as a forklift or a trailer before and after the inspection. goods. Therefore, when installing the above-mentioned conventional inspection system, there must be space for the transporter to turn and turn at both ends of the system, which requires a large area.
  • the above conventional radiation inspection system has the advantages of large floor space, complicated supporting equipment, poor compatibility, small adaptability range, low operating cost, and is not suitable for a cargo yard with limited space. Summary of the invention
  • the embodiment of the invention provides a small occupied area, does not need to be equipped with a transfer vehicle, has good compatibility, and has wide adaptability.
  • the cargo inspection system having a low running cost, or the cargo inspection system according to an embodiment of the present invention has at least one of the above advantages.
  • an inspection system for inspecting goods by radiation comprising: a plate type main conveyor; a radiation scanning unit, the radiation scanning unit spanning the plate type main conveyor and located at the Above the plate type main conveyor, for scanning the goods on the main conveyor of the plate type; auxiliary conveyors respectively arranged at the front end and the rear end of the main conveyor of the plate type, so as to respectively check the goods to be inspected
  • the cargo is loaded onto the palletized main conveyor and the inspected cargo is downloaded from the palletized main conveyor: and a lifting device for lifting the auxiliary conveyor.
  • the auxiliary conveyor is a roller conveyor.
  • the lifting device includes: an upper platform for supporting the roller conveyor on an upper surface thereof and an upper sliding groove along a longitudinal direction thereof; a lower platform along which the lower platform Longitudinally disposed with a sliding groove corresponding to the upper sliding groove; a link mechanism, the connecting mechanism comprising a first link and a second link, wherein the first link and the second link are at their substantially longitudinal centers Pivotablely coupled, and an upper end of the first link and a lower end of the second link are pivotally coupled to the upper platform and the lower platform, respectively, and the lower end of the first link and the upper end of the second link are slidable, respectively Engaged in the glide groove and the upper chute; and an actuator for driving the first link and the second link to pivot relative to each other to raise and lower the upper platform.
  • a lower end of the first link and an upper end of the second link are respectively provided with guide wheels, and the guide wheels are slidably engaged in the sliding groove and the upper sliding groove, respectively.
  • the upper sliding slot is formed in the first side surface of the upper platform, and the sliding groove is formed in the first side surface of the lower platform, and the upper end of the first connecting rod and the lower end of the second connecting rod are respectively hinged to the upper platform And the first side of the lower platform.
  • one end of the actuator is pivotally connected to the lower end of the second connecting rod, and the other end of the first actuator is pivotally connected to the upper end of the first connecting rod and the first connecting rod Between the longitudinal centers.
  • the actuator includes a hydraulic cylinder or a cylinder.
  • the actuator comprises: a screw; a threaded sleeve engaged with the screw such that the threaded sleeve is movable longitudinally relative to the screw by rotation of the screw; and a motor that drives the rotation of the screw.
  • the actuator includes a telescopic rod.
  • the radiation scanning unit comprises: a radiation source disposed on a first side of the plate type main conveyor and emitting radiation; a collimator disposed on the radiation source and the plate main conveyor Between the first side, for collimating the radiation emitted from the radiation source; a vertical arm frame, the vertical arm frame being disposed on a second side of the plate type main conveyor opposite to the first side, and The vertical boom is provided with a receiver that is emitted from a radiation source and collimated by a collimator.
  • a first detector array of rays a cross arm frame having one end connected to the upper end of the vertical arm frame and the other end connected to the collimator across the plate main conveyor, such that the vertical The boom, the traverse, and the collimator form a gantry frame, and the traverse boom is provided with a second detector array that receives radiation emitted from a radiation source and collimated by the collimator.
  • the inspection system of the present invention further includes a radiation protection wall disposed outside the gantry frame on the second side of the slab main conveyor to shield the radiation.
  • a guard frame may be separately provided at an end of the auxiliary conveyor remote from the plate type main conveyor.
  • the inspection system of the present invention further includes a tractor disposed at an end of the upper platform proximate to the panel main conveyor, and comprising: a reel; a motor that drives the reel to rotate; A rope, one end of which is wound on the drum and the other end is towed the goods to be inspected to draw the goods onto the auxiliary conveyor.
  • the source of radiation comprises an X-ray tube and an isotope source.
  • the lifting device comprises: a platform supporting the auxiliary conveyor; and a hydraulic cylinder disposed under the platform for supporting and lifting the platform.
  • the lifting device comprises: a platform supporting the auxiliary conveyor; and a screw transmission device, the screw transmission device comprising: a lead screw, a motor for driving the screw, and a nut, the silk mother Engaging with the screw and securing the bottom surface of the platform such that as the motor drives the lead screw to rotate, the nut moves along the lead screw thereby lifting the platform and the auxiliary conveyor.
  • the screw transmission device comprising: a lead screw, a motor for driving the screw, and a nut, the silk mother Engaging with the screw and securing the bottom surface of the platform such that as the motor drives the lead screw to rotate, the nut moves along the lead screw thereby lifting the platform and the auxiliary conveyor.
  • the transfer vehicle since the auxiliary conveyor capable of lifting and lowering is used, the transfer vehicle is not required, and the inspection system has the characteristics of small occupied area, low running cost, good compatibility, and wide adaptability, and is suitable for inspection. Air cargo, pallet goods, or bulk cargo such as roads, trains, and harbors are not checked out.
  • FIG. 1 is a schematic diagram of a radiation inspection system in accordance with an embodiment of the present invention, in which a radiation scanning unit of a radiation inspection system is mainly shown;
  • Figure 2 is a plan view of the radiation inspection system of Figure 1 after being rotated 90 degrees;
  • FIG. 3 is a schematic illustration of a radiation inspection system in accordance with an embodiment of the present invention, primarily showing roller-type auxiliary conveyors and their lifting devices; 4 is a schematic view showing the radiation inspection system in an inspection state according to an embodiment of the present invention. detailed description
  • an inspection system 100 for inspecting air cargo, pallet cargo, and other bulk cargoes using radiation such as X-rays includes a panel main conveyor 8; a radiation scanning unit; an auxiliary conveyor 7 ; and lifting device 10.
  • the radiation scanning unit is spanned above the plate type main conveyor 8 for performing radiation scanning on the goods on the plate type main conveyor 8, for example, the plate type main conveyor 8 drives the goods along FIG.
  • the direction D indicated by the arrow passes through the radiation scanning unit to scan and image the goods for inspection.
  • the plate type main conveyor 8 drives the goods through the radiation scanning unit in the opposite direction to the direction D, or reciprocally passes through the radiation scanning unit in the direction D and in the opposite direction to the direction D to repeatedly inspect the goods.
  • the auxiliary conveyors 7 are respectively disposed at the front end (the left end in Figs. 2-4) and the rear end (the right end in Figs. 2-4) of the main pallet conveyor 8 so as to be respectively inspected.
  • the checked goods are uploaded onto the panel main conveyor 8 and the inspected goods are downloaded from the panel main conveyor 8.
  • the auxiliary conveyor disposed on the left side of the panel type main conveyor 8 is referred to as an uploading auxiliary conveyor for uploading goods to the panel main conveyance.
  • an auxiliary conveyor disposed on the right side of the panel main conveyor 8 is referred to as a download auxiliary conveyor for downloading goods from the panel main conveyor 8.
  • the pallet main conveyor 8 can drive the goods thereon to pass through the radiation scanning unit reciprocally to repeatedly inspect the goods, the terms "upload” and "download” are exemplary and are not intended to limit the invention.
  • the auxiliary conveyor on the left side of the main conveyor 8 is used for downloading goods from the main conveyor 8 and on the right side of the main conveyor 8 The machine is used to load the goods onto the panel main conveyor 8.
  • the auxiliary conveyor 7 is a roller conveyor.
  • the auxiliary conveyor 7 is not limited to a roller conveyor, and may be, for example, a slat conveyor, or any other suitable form of conveyor.
  • the lifting device 10 is used for lifting the auxiliary conveyor 7, respectively, so that the height of the auxiliary conveyor 7 can be adjusted to be the same as the width of the pallet main conveyor 8 in order to load the goods from the auxiliary conveyor 7 to the panel main conveyor 8 or The cargo is downloaded from the panel main conveyor 8 to the auxiliary conveyor 7, or the height of the auxiliary conveyor 7 can be adjusted to be lower or higher than the height of the panel main conveyor 8. It should be noted that the auxiliary conveyors on both sides of the plate type main conveyor 8 The heights are individually adjusted.
  • the lifting device 10 includes an upper platform 10-2, a lower platform 10-6, a link mechanism 10-3, and an actuator 10-7.
  • the upper platform 10-2 is for supporting the roller auxiliary conveyor 7 on its upper surface and is provided with an upper chute 10-10 along its longitudinal direction, more specifically, the roller 7a of the auxiliary conveyor 7 and other constituent members Set on the upper platform 10-2.
  • the lower platform 10-6 is provided with a sliding groove 10-11 corresponding to the upper chute 10-10 along its longitudinal direction.
  • the coupling mechanism 10-3 includes a first link 10-3-1 and a second link 10-3-2, wherein the first link 10-3-1 and the second link 10-3-2 are in their general
  • the longitudinal center A is pivotally connected, for example by a pin 10-12, and the upper end of the first link 10-3-1 (i.e., away from the end of the plate main conveyor 8) is pivotable, for example, by a pin 10-9
  • Rotatingly connected to the upper platform 10-2 the lower end of the second link 10-3-2 (i.e., away from the end of the plate main conveyor 8) is pivotally connected, for example, by a pin 10-8 (in this embodiment) Middle hinged) to the lower platform 10-6, and the lower end of the first link 10-3-1 (i.e., near the end of the plate main conveyor 8) and the upper end of the second link 10-3-2 (ie,
  • One end of the plate main conveyor 8 is slidably engaged in the glide groove 10-10 and the upper chute 10-11, respectively.
  • the lower end of the first link 10-3-1 and the upper end of the second link 10-3-2 are respectively provided with guide wheels 10-4, 10-5, guide wheels 10-4, 10-5 respectively Engaged in the upper chute 10-10 and the down chute 10-11 so that the lower end of the first link 10-3-1 and the upper end of the second link 10-3-2 are in the upper chute 10-10 and the glide groove Slide within 10-11.
  • the upper chute 10-10 is formed in the first side of the upper platform 10-2 (ie, the lower side in FIG. 2), and the sliding groove 10-1 1 is formed on the first side of the lower platform 10-6 ( That is, in the lower side of Figure 2). Meanwhile, the upper end of the first connecting rod 10-3-1 and the lower end of the second connecting rod 10-3-2 are pivotally hinged to the upper platform 10-2 and the lower platform through the pins 10-9, 10-8, respectively.
  • the first side of 10-6 it can be understood by those skilled in the art that the formation positions of the upper chute and the down chute are not limited to the sides of the upper platform and the lower platform, for example, may be formed under the upper platform and the lower platform, respectively, and the number may be any suitable. quantity. .
  • the lifting device for the lifting auxiliary conveyor 7 is not limited to the above specific embodiment, and those skilled in the art can realize the lifting of the auxiliary conveyor by any suitable means.
  • the upper platform 10-2 can be lifted and lowered by the hydraulic cylinder, screw support, by actuating the hydraulic cylinder or by driving the screw 10-2.
  • the actuator 10-7 is configured to drive the first link 10-3-1 and the second link 10-3-2 to pivot relative to each other about the pin 10-12 so as to be raised and lowered relative to the lower platform 10-6.
  • one end of the actuator 10-7 (the lower end in FIG. 3) is pivotally coupled to the vicinity of the lower end of the second connecting rod 10-3-2, and the actuator The other end of 10-7 is pivotally connected to the first connecting rod
  • the upper end of 10-3-1 is between the longitudinal center A of the first connecting rod.
  • the first link 10-3-1 and the second link 10-3-2 pivot around the pin 10-12, thereby a distance between an upper end of a link 10-3-1 and a lower end of the second link 10-3-2 and a lower end of the first link 10-3-1 and an upper end of the second link 10-3-2
  • the distance between the two ends is increased, and the lower end of the first link 10-3-1 and the upper end of the second link 10-3-2 slide away from the plate main in the sliding groove 10-11 and the upper sliding groove 10-10, respectively.
  • the conveyor 8 is such that the upper platform 10-2 is raised relative to the lower platform 10-6.
  • the height of the auxiliary conveyor 7 can be adjusted to be the same as the height of the panel main conveyor 8 (as shown in Fig. 4) or higher or lower than the height of the panel main conveyor 8 (as shown in Fig. 3).
  • the actuator 10-7 is a hydraulic cylinder or a cylinder, but is not limited thereto.
  • the actuator 10-7 can be a telescopic rod.
  • the actuator 10-7 includes a screw; a threaded sleeve that engages the screw such that the threaded sleeve is movable longitudinally relative to the screw by rotation of the screw; and a motor that drives the rotation of the screw.
  • the operation of the actuator 10-7 is similar to that of the above-described hydraulic cylinder or cylinder and will not be described in detail herein.
  • the lifting device for the hoisting auxiliary conveyor 7 is not limited to the above-described connecting mechanism.
  • the lifting device may include a platform (not shown) similar to the upslope 10-2 supporting the auxiliary conveyor 7, and a hydraulic cylinder disposed below the platform for supporting and lifting the platform, the number of hydraulic cylinders may be Determine according to actual needs.
  • the upper hydraulic cylinder it may be adapted to a screw drive including a lead screw, a motor for driving the lead screw, and a screw engaged with the screw and fixed to the bottom surface of the platform supporting the auxiliary conveyor 7. When the motor is started, the lead screw rotates, so that the nut moves along the lead screw, thereby driving the platform and the auxiliary conveyor 7 to be lifted and lowered, which can be easily understood by those skilled in the art and will not be described in detail herein.
  • the radiation scanning unit includes: a radiation source 1, such as an X-ray tube and an isotope radiation source; a collimator 2; a vertical arm frame 4; and a cross arm frame 3.
  • a radiation source such as an X-ray tube and an isotope radiation source
  • the radiation scanning unit further comprises a radiation protection wall 5.
  • the radiation source 1 is disposed on the first side (the left side in Fig. 1, that is, the lower side in Fig. 2) of the plate type main conveyor 8, and emits a ray R.
  • the ray R indicated by two straight lines is shown in Fig. 1, in reality, the ray beam emitted from the radiation source 1 is collimated by the collimator 2 to be a fan-shaped beam surface.
  • a collimator 2 is disposed between the radiation source 1 and the first side of the plate main conveyor 8 for collimating the radiation R emitted from the radiation source 1.
  • a vertical boom 4 is disposed on a second side of the panel main conveyor 8 opposite the first side (on the right side in FIG. 1 That is, the upper side in Fig. 2, and the vertical boom 4 is provided with a first detector array (not shown) that receives the radiation R emitted from the radiation source 1 and collimated by the collimator 2.
  • One end of the traverse frame 3 (the right end in FIG. 1) is connected to the upper end of the jib frame 4 and the other end is traversed by the plate type main conveyor 8 so as to be connected to the collimator 2, that is, the collimator 2 is supported on the traverse frame
  • the radiation protection wall 5 is disposed on the outside of the gantry frame on the second side of the slab main conveyor 8 to shield the ray R (including rays of scattering, refraction, etc.).
  • the inspection system 100 further includes a guard frame 6 which is respectively disposed at an end of the auxiliary conveyor ⁇ away from the panel main conveyor , to prevent the cargo from falling off the auxiliary conveyor 7.
  • the inspection system 100 further includes a tractor 9 disposed at an end of the upper platform 10-2 proximate to the panel main conveyor 8 for pulling (uploading) the cargo to On the auxiliary conveyor 7.
  • the tractor 9 includes a reel 9-1; a motor (not shown) that drives the reel 9-1 to rotate; and a leash 9-2, one end of which is wound around the reel 9-1 At the other end, the cargo to be inspected is towed to draw the cargo onto the auxiliary conveyor.
  • the inspection system further includes a scan control module, an image acquisition module, an operation detector, a data processing unit and a control unit, and these components are the same as those of the prior art, and are not described herein again.
  • the loading roller auxiliary conveyor 7 (for example, the auxiliary conveyor on the left side in Figs. 2-4) is adjusted to a suitable height by the lifting device 10 to facilitate loading of the cargo thereon.
  • the packaged goods can be pulled by the tractor 9 or manually onto the loading roller auxiliary conveyor 7.
  • the display image is stopped, and the inspected goods are transported from the plate main conveyor 8 to the download roller auxiliary conveyor 7 (for example, the auxiliary conveyor on the right side in Figs. 2-4) Above, at this time, the height of the download roller auxiliary conveyor 7 is the same as that of the plate type main conveyor 8. 7) Adjust the download roller auxiliary conveyor 7 to the appropriate height to remove the cargo.
  • the goods on the download roller auxiliary conveyor 7 can be transported to the main pallet conveyor 8 through the control unit, and the main conveyor 8 drives the goods along the line.
  • the radiation scanning unit is used to check the goods newly, or the goods can be unpacked after being downloaded, or the inspection can be performed after the goods are re-adjusted, thereby improving the accuracy of the inspection. As shown in Figure 4.

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Description

辐射检査系统
技术领域
本发明总体上涉及一种利用辐射 （射线） 检査货物的检查系统。 特别是， 本发明 涉及一种适于检査托盘货物、 航空集装货物及其它大宗货物的 X射线检查系统。 背景技术
大型航空集装货物检查系统是航空海关急需的检测设备。 目前， 大宗航空货物的 检查的主要方式是开箱检查或利用 X光机检查。
然而， 幵箱检查时间长、 效率低、 检查成本高。 利用 X光机检查主要是通过对货 物进行反射成像进行检査， 由于 X光机的射线能量低， 穿透性差， 并且货物的只有接 近射线源侧一定深度范围的部分的图像比较清晰， 图像质量和适用范围不能满足的要 求。
为此， 本申请人申请的中国专利申请 CN1405555A、 名称为 《航空集装 /托盘货物 检査系统》 公开了一种货物检查系统， 包括由辐射源、 探测器、 准直器、 横测器臂、 竖探测器臂构成的门形扫描架； 由板式主输送机与辊道式辅助输送机组成的复合传送 系统； 辐射屏蔽系统； 设备舱； 和操作室等。
当上载航空集装 /托盘货物时， 在航空集装 /托盘货物的底面接触到上载辊道的最 外侧的辊子后， 启动辊道式辅助输送机， 在辊子的带动下， 货物被传送到板式主输送 机上， 货物由板式主输送机带动通过扫描架下面的区域。
然而， 在上述传统检查系统中， 辊道式辅助输送机与板式主输送机高度固定， 货 物在检测前后必须利用如叉车或拖车的专用转运车， 在货车与辊道式辅助输送机之间 转运货物。 因此在安装上述传统检査系统时， 在系统的两端必须留有转运车行驶、 转 弯的空间， ώ此需要较大的面积。
因此， 上述传统辐射检査系统存在着占地面积大， 配套设备复杂， 兼容性差， 适 应范围小， 运行成本髙， 不适于空间有限的货场的缺点。 发明内容
本发明的实施例提供一种占地面积小， 不需配备转运车， 兼容性好， 适应范围广， 运行成本低的货物检査系统， 或者根据本发明实施例的货物检査系统具有上述优点中 的至少一个。
为此， 根据本发明的一个方面， 提出一种利用辐射检査货物的检查系统， 包括： 板式主输送机； 辐射扫描单元， 所述辐射扫描单元横跨所述板式主输送机且位于所述 板式主输送机上方， 用于对板式主输送机上的货物进行辐射扫描； 辅助输送机， 所述 辅助输送机分别设置在所述板式主输送机的前端和后端处， 以便分别将待检查的货物 上载到所述板式主输送机上和从所述板式主输送机上下载检查后的货物：和升降装置， 所述升降装置用于升降所述辅助输送机。
优选地， 所述辅助输送机为辊式输送机。
进而， 所述升降装置包括： 上平台， 所述上平台用于将所述辊式输送机支撑在它的 上表面上且沿其纵向设置有上滑槽； 下平台， 所述下平台沿其纵向设置有与上滑槽对 应的下滑槽； 连杆机构， 所述连接机构包括第一连杆和第二连杆， 其中所述第一连杆 和第二连杆在它们的大体纵向中心处可枢转地连接， 且第一连杆的上端和第二连杆的 下端分别可枢转地连接到上平台和下平台， 而第一连杆的下端和第二连杆的上端分别 可滑动地接合在所述下滑槽和上滑槽内； 和致动器， 所述致动器用于驱动所述第一连 杆和第二连杆彼此相对地枢转， 以便升高和降低上平台。
另外， 第一连杆的下端和第二连杆的上端分别设置有导轮， 所述导轮分别可滑动地 接合在所述下滑槽和上滑槽内。
进而， 所述上滑槽形成在上平台的第一侧面内， 且所述下滑槽形成在下平台的第一 侧面内， 及第一连接杆的上端和第二连接杆的下端分别铰接到上平台和下平台的第一 侧面。
优选地， 所述致动器的一端可枢转地连接到第二连接杆的下端附近， 且第一致动器 的另一端可枢转地连接到第一连接杆的上端与第一连接杆的纵向中心之间。
另外， 所述致动器包括液压缸或气缸。 可选地， 所述致动器包括： 螺杆； 螺纹套， 所述螺纹套与螺杆接合从而所述螺紋套能够通过螺杆的旋转相对于螺杆纵向移动； 和 驱动所述螺杆旋转的电机。 另外， 所述致动器包括可伸缩杆。
优选地， 所述辐射扫描单元包括： 辐射源， 所述辐射源设置在板式主输送机的第一 侧且发出射线； 准直器， 所述准直器设置在辐射源与板式主输送机的第一侧之间， 用 于准直从辐射源发出的射线； 竖臂架， 所述竖臂架设置在所述板式主输送机的、 与所 述第一侧相对的第二侧， 且所述竖臂架上设置有接收从辐射源发出且由准直器准直的 射线的第一探测器阵列； 横臂架， 所述横臂架的一端与竖臂架的上端相连且另一端横 跨过所述板式主输送机与所述准直器相连， 从而所述竖臂架、 横臂架、 和所述准直器 构成门形框架， 且所述横臂架上设置有接收从辐射源发出且由准直器准直的射线的第 二探测器阵列。
进而， 本发明的检查系统进一步包括辐射防护壁， 所述辐射防护壁在所述板式主输 送机的第二侧设置在门形框架外侧以便屏蔽射线。
另外， 在所述辅助输送机的远离所述板式主输送机的端部可以分别设置防护架。 优选地， 本发明的检查系统进一步包括牵引器， 所述牵引器设置在所述上平台的、 接近所述板式主输送机的端部， 并包括： 卷筒； 驱动卷筒旋转的电机； 牵引绳， 所述 牵引绳的一端缠绕在所述卷筒上且另一端牵引将被检査的货物， 以便将所述货物牵引 到辅助输送机上。
根据本发明的实施例， 所述射线源包括 X光管和同位素放射源。
可选地， 所述升降装置包括： 支撑所述辅助输送机的平台； 和液压缸， 所述液压缸 设置在平台下面， 用于支撑和升降所述平台。
可选地， 所述升降装置包括： 支撑所述辅助输送机的平台； 和丝杠传动装置， 所述 丝杠传动装置包括： 丝杠， 驱动丝杠的电机， 和丝母， 所述丝母与丝杠接合并固定所 述平台的底面上， 从而当电机驱动丝杠旋转时， 所述丝母沿丝杠移动由此升降所述平 台和辅助输送机。
根据本本发明的实施例， 由于釆用了能够升降的辅助输送机， 因此不需备转运车， 检查系统具有占地面积小， 运行成本低、 兼容性好、 适应范围广的特点， 适用于检查 航空集装货物， 托盘货物， 或公路、 火车、 海港等大宗货物的不开箱检査。 附图说明
本发明的这些和 /或其他方面和优点从下面结合附图对优选实施例的描述中将 变得明显和容易理解， 其中：
图 1是根据本发明实施例的辐射检查系统的示意图，其中主要示出了辐射检查系 统的辐射扫描单元；
图 2是图 1所示辐射检査系统旋转 90度后的俯视图；
图 3是根据本发明实施例的辐射检査系统的示意图，其中主要示出了辊式辅助输 送机和它们的升降装置； 图 4是本发明实施例的辐射检査系统处于检査状态的示意图。 具体实施方式
下面详细描述本发明的实施例， 所述实施例的示例在附图中示出， 其中自始至 终相同的标号表示相同的元件。 下面通过参考附图描述实施例以便解释本发明。
参考图 1至图 4， 根据本发明的利用诸如 X射线的辐射检査航空集装货物、托盘货 物、 和其它大宗货物的检查系统 100包括板式主输送机 8; 辐射扫描单元； 辅助输送 机 7; 和升降装置 10。
具体地， 如图 1所示， 辐射扫描单元横跨在板式主输送机 8上方， 用于对板式主输 送机 8上的货物进行辐射扫描， 例如， 板式主输送机 8带动货物沿图 4中箭头所示方 向 D通过辐射扫描单元， 以便对所述货物进行扫描、 成像， 从而进行检査。 当然， 板 式主输送机 8带动货物沿与方向 D相反的方向通过辐射扫描单元，或沿方向 D和沿与 方向 D相反的方向往复地通过辐射扫描单元， 以便对货物进行重复地检查。
如图 2-4所示，辅助输送机 7分别设置在板式主输送机 8的前端（图 2-4中的左端） 和后端 （图 2-4中的右端） 处， 以便分别将待检査的货物上载到板式主输送机 8上和 从板式主输送机 8下载检査后的货物。
在本发明的实施例中， 为了描述的方便， 在附图 2-4中， 设置在板式主输送机 8左 侧的辅助输送机称为上载辅助输送机， 用于将货物上载到板式主输送机 8上， 设置在 板式主输送机 8右侧的辅助输送机称为下载辅助输送机， 用于将货物从板式主输送机 8上下载。 然而， 由于板式主输送机 8可以带动其上的货物往复地通过辐射扫描单元， 以便对货物进行反复地检查， 因此， 术语 "上载"和 "下载" 是示例性的， 并非用于 限制本发明， 例如， 也可以是， 在图 2-4中， 位于板式主输送机 8左侧的辅助输送机 用于将货物从板式主输送机 8上下载， 而位于板式主输送机 8右侧的输送机用于将货 物上载到板式主输送机 8上。
更具体而言， 如图 3和图 4所示， 辅助输送机 7为辊式输送机。 然而， 辅助输送机 7并不限于辊式输送机， 例如可以为板式输送机， 或其它任何合适形式的输送机。
升降装置 10分别用于升降辅助输送机 7， 从而辅助输送机 7的高度能够被调整到 与板式主输送机 8的髙度相同以便将货物从辅助输送机 7上载到板式主输送机 8或将 货物从板式主输送机 8下载到辅助输送机 7， 或辅助输送机 7的高度能够被调整为低 于或高于板式主输送机 8的高度。 需要说明的是， 板式主输送机 8两侧的辅助输送机 的高度分别单独地调整。
具体地， 如图 3和图 4所示， 升降装置 10包括上平台 10-2， 下平台 10-6， 连杆机 构 10-3， 和致动器 10-7。
上平台 10-2用于将辊式辅助输送机 7支撑在它的上表面上且沿其纵向设置有上滑 槽 10-10，更具体而言，辅助输送机 7的辊子 7a和其它构成部件设置在上平台 10-2上。 下平台 10-6沿其纵向设置有与上滑槽 10-10对应的下滑槽 10-11。
连接机构 10-3包括第一连杆 10-3-1和第二连杆 10-3-2， 其中第一连杆 10-3-1和第 二连杆 10-3-2在它们的大体纵向中心 A处例如通过销轴 10-12可枢转地连接， 且第一 连杆 10-3-1的上端（即， 远离板式主输送机 8的一端）例如通过销轴 10-9可枢转地连 接到上平台 10-2 , 第二连杆 10-3-2的下端 （即， 远离板式主输送机 8的一端） 例如通 过销轴 10-8可枢转地连接 （在本实施例中为铰接） 到下平台 10-6, 而第一连杆 10-3-1 的下端 （即， 靠近板式主输送机 8的一端） 和第二连杆 10-3-2的上端 （即， 靠近板式 主输送机 8的一端） 分别可滑动地接合在下滑槽 10-10和上滑槽 10-11内。
优选地，在第一连杆 10-3-1的下端和第二连杆 10-3-2的上端分别设置有导轮 10-4， 10-5，导轮 10-4， 10-5分别接合在上滑槽 10-10和下滑槽 10-11内，以便第一连杆 10-3-1 的下端和第二连杆 10-3-2的上端在上滑槽 10-10和下滑槽 10-11内滑动。
更具体地， 上滑槽 10-10形成在上平台 10-2的第一侧面 （即图 2中的下侧面） 内， 且下滑槽 10-1 1形成在下平台 10-6的第一侧面 （即图 2中的下侧面） 内。 同时， 第一 连接杆 10-3-1的上端和第二连接杆 10-3-2的下端分别通过销轴 10-9, 10-8可枢转地铰 接到上平台 10-2和下平台 10-6的第一侧面。 然而， 本领域的普通技术人员可以理解， 上滑槽和下滑槽的形成位置并不限于上平台和下平台的侧面， 例如可以分别形成在上 平台和下平台的下面， 且数量可以为任何合适的数量。 .
需要说明的是， 用于升降辅助输送机 7的升降装置并不限于上述具体实施例， 本领 域的普通技术人员可以通过任何合适的方式实现辅助输送机的升降。例如，上平台 10-2 可以通过液压缸， 螺杆支撑， 通过致动液压缸或驱动螺杆旋转能够升降上平台 10-2由 此升降辅助输送机 7。
致动器 10-7用于驱动第一连杆 10-3-1和第二连杆 10-3-2绕销轴 10-12相互枢转， 以便相对于下平台 10-6升高和降低上平台 10-2。
具体地， 如图 3和图 4所示， 致动器 10-7的一端 （图 3中的下端） 可枢转地连接 到第二连接杆 10-3-2的下端附近，且致动器 10-7的另一端可枢转地连接到第一连接杆 10-3-1的上端与第一连接杆的纵向中心 A之间。
如图 3左侧部分所示， 当液压缸的缸杆伸出时，第一连杆 10-3-1和第二连杆 10-3-2 绕销轴 10-12相互枢转， 从而第一连杆 10-3-1的上端和第二连杆 10-3-2的下端之间的 距离及第一连杆 10-3-1的下端和第二连杆 10-3-2的上端之间的距离增大， 同时第一连 杆 10-3-1的下端和第二连杆 10-3-2的上端分别在下滑槽 10-11和上滑槽 10-10内滑动 远离板式主输送机 8， 从而上平台 10-2相对于下平台 10-6被升高。
反之， 如图 3右侧部分所示， 当液压缸的缸杆缩回时， 上平台 10-2相对于下平台 10-6被降低。由此，辅助输送机 7的高度能够调整到与板式主输送机 8的高度相同（如 图 4 ) 或高于或低于板式主输送机 8的高度 （如图 3所示）。
在图 3和图 4中示出的实施例中， 致动器 10-7为液压缸或气缸， 但并不限于此。 致动器 10-7可以为伸缩杆。 可选地， 致动器 10-7包括螺杆； 螺纹套， 所述螺纹套与 螺杆接合从而螺纹套能够通过螺杆的旋转相对于螺杆纵向移动； 和驱动螺杆旋转的电 机。 在这种情况下， 致动器 10-7的操作与上述液压缸或气缸的情况类似， 这里不再详 细描述。
用于升降辅助输送机 7的升降装置不限于上述连接机构。可选地， 升降装置可以包 括支撑辅助输送机 7的与上坡台 10-2类似的平台 （未示出）， 和设置在平台下方用于 支撑和升降平台的液压缸， 液压缸的数量可以根据实际需要确定。 另外， 代替上¾液 压缸， 可以适于丝杠传动装置， 所述丝杠传动装置包括丝杠， 驱动丝杠的电机， 和与 丝杠接合并固定到支撑辅助输送机 7的平台底面上的丝母， 当启动电机时， 丝杠旋转， 从而丝母沿丝杠移动， 由此带动平台和辅助输送机 7升降， 这对于本领域的普通技术 人员能够容易理解， 这里不再详细描述。
根据本发明的实施例， 如图 1和图 2所示， 辐射扫描单元包括： 辐射源 1， 例如 X 光管和同位素放射源； 准直器 2; 竖臂架 4; 和横臂架 3。 优选地， 辐射扫描单元还进 一步包括辐射防护壁 5。
具体地， 辐射源 1设置在板式主输送机 8的第一侧 （图 1中的左侧， 即， 图 2中的 下侧） 且发出射线 R。 需要说明的是， 虽然图 1 中示出了用两条直线表示的射线 R, 但是实际上， 辐射源 1发出的是的射线束经准直器 2准直后为扇形的射线束面。
准直器 2设置在辐射源 1与板式主输送机 8的第一侧之间，用于准直从辐射源 1发 出的射线 R。
竖臂架 4设置在板式主输送机 8的、 与所述第一侧相对的第二侧 （图 1中的右侧， 即， 图, 2中的上侧）， 且竖臂架 4上设置有接收从辐射源 1发出且通过准直器 2准直的 射线 R的第一探测器阵列 （未示出）。
横臂架 3的一端（图 1中的右端）与竖臂架 4的上端相连且另一端横跨过板式主输 送机 8以便与准直器 2相连， 即准直器 2支撑在横臂架 3的另一端， 从而竖臂架 4、 横臂架 3、 和准直器 2构成门形框架， 且横臂架 3上设置有接收从辐射源 1发出且由 准直器 2准直的射线 R的第二探测器阵列 （未示出）；
辐射防护壁 5在板式主输送机 8的第二侧设置在门形框架外侧以便屏蔽射线 R (包 括散射、 折射等的射线）。
可选地， 根据本发明实施例的检查系统 100进一步包括防护架 6， 防护架 6分别设 置在辅助输送机 Ί的远离板式主输送机 Ί的端部， 以便防止货物落下辅助输送机 7。
可选地， 根据本发明实施例的检查系统 100进一步包括牵引器 9， 牵引器 9设置在 上平台 10-2的、 接近板式主输送机 8的端部， 用于将货物牵引 （上载） 到辅助输送机 7上。
具体地， 牵引器 9包括卷筒 9-1 ; 驱动卷筒 9-1 旋转的电机 （未示出）； 和牵引绳 9-2 , 牵引绳 9-2的一端缠绕在卷筒 9-1上且另一端牵引将被检查的货物， 以便将所述 货物牵引到辅助输送机上。
需要说明的是， 根据本发明的检查系统还包括扫描控制模块、 图像获取模块、 运行 检测器、 数据处理单元和控制单元， 这些构成部分与现有技术的相同， 这里不再赘述。
下面描述使用根据本发明实施例的利用辐射检查系统对货物进行检查的操作过程。
1 ) 首先启动检査系统开机预热， 进入待机状态。
2 )通过升降装置 10将上载辊式辅助输送机 7 (例如， 图 2-4中左侧的辅助输送机) 调整至合适高度， 便于将货物上载到其上。
3 ) 集装货物可以通过牵引器 9或者人工推拉到上载辊式辅助输送机 7上。
4) 将上载辊式辅助输送机 7调整到与板式主输送机 8相同的高度， 如图 4所示。
5 )启动上载辊式辅助输送机 7， 将货物输送到板式主输送机 8上， 板式主输送机 8 带动其上的货物沿方向 D通过辐射扫描单元， 当货物通过射线束面时， 产生扫描数据 并传送到数据处理中心， 生成实时的货物图像。
6 ) 当货物完全通过射线束面后， 停止显示图像， 检查后的货物从板式主输送机 8 被输送到下载辊式辅助输送机 7 (例如， 图 2-4中右侧的辅助输送机）上， 此时， 下载 辊式辅助输送机 7的高度与板式主输送机 8相同。 7) 将下载辊式辅助输送机 7调整到合适的高度， 将货物移走。
如果检査人员通过观察货物图像， 判断货物需要重新检查， 即可通过控制单元， 将 下载辊式辅助输送机 7上的货物输送到板式主输送机 8上， 板式主输送机 8带动货物 沿与方向 D相反的方向通过辐射扫描单元， 从新对货物进行检査， 或者让货物下载后 进行开箱检査， 也可以重新调整摆放货物角度后进行多次检查， 从而提髙检查的准确 性， 如图 4所示。
尽管已经示出和描述了本发明的实施例， 对于本领域的普通技术人员而言， 可以 理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行变化， 本发明的范 围由所附权利要求及其等同物限定。

Claims

权 利 要 求
1、一种利用辐射检査货物的检查系统， 包括：
板式主输送机；
辐射扫描单元，所述辐射扫描单元横跨所述板式主输送机且位于所述板式主输送机 上方， 用于对板式主输送机上的货物进行辐射扫描；
辅助输送机， 所述辅助输送机分别设置在所述板式主输送机的前端和后端处， 以便 分别将待检査的货物上载到所述板式主输送机上和从所述板式主输送机上下载检査后 的货物； 和
升降装置， 所述升降装置用于升降所述辅助输送机。
2、 根据权利要求 1所述的检查系统， 其中所述辅助输送机为辊式输送机。
3、 根据权利要求 2所述的检查系统， 其中所述升降装置包括- 上平台，所述上平台将所述辊式输送机支撑在它的上表面上且沿其纵向设置有上滑 槽；
下平台， 所述下平台沿其纵向设置有与上滑槽对应的下滑槽；
连杆机构， 所述连接机构包括第一连杆和第二连杆， 其中所述第一连杆和第二连杆 在它们的大体纵向中心处可枢转地连接， 且第一连杆的上端和第二连杆的下端分别可 枢转地连接到上平台和下平台， 而第一连杆的下端和第二连杆的上端分别可滑动地接 合在所述下滑槽和上滑槽内； 和
致动器， 所述致动器用于驱动所述第一连杆和第二连杆彼此相对地枢转， 以便升高 和降低上平台。
4、 根据权利要求 3所述的检査系统， 其中第一连杆的下端和第二连杆的上端分别 设置有导轮， 所述导轮分别可滑动地接合在所述下滑槽和上滑槽内。
5、根据权利要求 4所述的检査系统， 其中所述上滑槽形成在上平台的第一侧面内， 且所述下滑槽形成在下平台的第一侧面内， 及
第一连接杆的上端和第二连接杆的下端分别铰接到上平台和下平台的第一侧面。
6、 根据权利要求 5所述的检査系统， 其中所述致动器的一端可枢转地连接到第二 连接杆的下端附近， 且致动器的另一端可枢转地连接到第一连接杆的上端与第一连接 杆的纵向中心之间。
7、 根据权利要求 6所述的检査系统， 其中所述致动器包括液压缸或气缸。
8、 根据权利要求 6所述的检查系统， 其中所述致动器包括- 螺杆；
螺纹套，所述螺纹套与螺杆接合从而所述螺纹套能够通过螺杆的旋转相对于螺杆纵 向移动； 和
驱动所述螺杆旋转的电机。
9、 根据权利要求 6所述的检查系统， 其中所述致动器包括可伸缩杆。
10、 根据权利要求 1-9中任一项所述的检査系统， 其中所述辐射扫描单元包括： 辐射源， 所述辐射源设置在板式主输送机的第一侧且发出射线；
准直器， 所述准直器设置在辐射源与板式主输送机的第一侧之间， 用于准直从辐射 源发出的射线；
竖臂架， 所述竖臂架设置在所述板式主输送机的、 与所述第一侧相对的第二侧， 且 所述竖臂架上设置有接收从辐射源发出且由准直器准直的射线的第一探测器阵列； 和 横臂架，所述横臂架的一端与竖臂架的上端相连且另一端横跨过所述板式主输送机 以便与所述准直器相连， 从而所述竖臂架、 横臂架、 和所述准直器构成门形框架， 且 所述横臂架上设置有接收从辐射源发出且由准直器准直的射线的第二探测器阵列。
11、 根据权利要求 10所述的检査系统， 进一步包括辐射防护壁， 所述辐射防护壁 在所述板式主输送机的第二侧设置在门形框架外侧以便屏蔽射线。
12、 根据权利要求 10所述的检査系统， 进一步包括防护架， 所述防护架分别设置 在所述辅助输送机的远离所述板式主输送机的端部。
13、 根据权利要求 10所述的检査系统， 进一步包括牵引器， 所述牵引器设置在所 述上平台的、 接近所述板式主输送机的端部， 并包括- 卷筒；
驱动卷筒旋转的电机； 和
牵引绳， 所述牵引绳的一端缠绕在所述卷筒上且另一端牵引将被检查的货物， 以便 将所述货物牵引到辅助输送机上。
14、 根据权利要求 10所述的检查系统， 其中所述射线源包括 X光管和同位素放射 源。
15、 根据权利要求 1所述的检査系统， 其中所述升降装置包括：
支撑所述辅助输送机的平台； 和 ' 液压缸， 所述液压缸设置在平台下面， 用于支撑和升降所述平台。
16、 根据权利要求 1所述的检査系统， 其中所述升降装置包括- 支撑所述辅助输送机的平台； 和
丝杠传动装置， 所述丝杠传动装置包括：
丝杠，
驱动丝杠的电机， 和
丝母， 所述与丝杠接合并固定所述平台的底面上， 从而当电机驱动丝杠旋转 时， 所述丝母沿丝杠移动由此升降所述平台和辅助输送机。
PCT/CN2007/000066 2006-01-11 2007-01-08 Système d'inspection pour inspecter une cargaison au moyen de rayonnements WO2007079675A1 (fr)

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DE112007000011T DE112007000011B4 (de) 2006-01-11 2007-01-08 Ein Prüfsystem zum Prüfen von Ladungen durch Strahlung
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RU2007142183A (ru) 2009-05-20
CN101000312B (zh) 2010-05-12
AU2007204529A1 (en) 2007-07-19
US20080197279A1 (en) 2008-08-21
GB0724497D0 (en) 2008-01-30
GB2448011B (en) 2010-11-17
HK1110115A1 (en) 2008-07-04
GB2448011A (en) 2008-10-01
DE112007000011B4 (de) 2012-10-31
AU2007204529B2 (en) 2010-12-02
DE112007000011T5 (de) 2008-07-03
US7817775B2 (en) 2010-10-19
RU2373526C2 (ru) 2009-11-20
CN101000312A (zh) 2007-07-18

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