WO2020141002A1 - 可移动式安全检查装置 - Google Patents

可移动式安全检查装置 Download PDF

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Publication number
WO2020141002A1
WO2020141002A1 PCT/CN2020/070491 CN2020070491W WO2020141002A1 WO 2020141002 A1 WO2020141002 A1 WO 2020141002A1 CN 2020070491 W CN2020070491 W CN 2020070491W WO 2020141002 A1 WO2020141002 A1 WO 2020141002A1
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WO
WIPO (PCT)
Prior art keywords
hole
inspection device
vertical
vertical beams
safety inspection
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2020/070491
Other languages
English (en)
French (fr)
Inventor
陈志强
李元景
张丽
李荐民
高克金
史俊平
何远
王�锋
曹亚鹏
李洪旗
孙尚民
宗春光
胡煜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsinghua University
Nuctech Co Ltd
Nuctech Beijing Co Ltd
Original Assignee
Tsinghua University
Nuctech Co Ltd
Nuctech Beijing Co Ltd
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 Co Ltd, Nuctech Beijing Co Ltd filed Critical Tsinghua University
Publication of WO2020141002A1 publication Critical patent/WO2020141002A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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

Definitions

  • the present disclosure relates to the field of safety inspection, and particularly to a movable safety inspection device.
  • the safety inspection device based on radiation imaging known by the inventor includes two scanning methods, one of which is to fix the inspection equipment, the object to be inspected is moving and to scan and image the object to be inspected through the scanning area; the other is to inspect the object to be inspected Fixed, the detection equipment moves, and the scanning area scans and images the inspection items in the manner of the items to be inspected.
  • a movable security inspection device including: a portal frame, including a beam at the top, and two vertical beams located at both sides of the beam and connected to the beam; object detection based on radiation imaging
  • the assembly which is at least partially installed in the portal frame, is configured to detect items passing through the portal frame; wheel-type ground walking devices, which are respectively provided at the lower ends of the two vertical beams, can be made movable by its own walking motion
  • the safety inspection device walks and turns relative to the ground; and a connecting bracket, which is connected to the upper end of at least one of the two vertical beams, is configured to support the connecting beam, and the connecting bracket can be connected to the two vertical beams, the beams or the Each vertical beam forms at least one fitting gap.
  • the connecting bracket includes: a fixing portion, which is fixedly connected to the crossbeam; and an engaging portion, which is provided at the lower end of the fixing portion and can be engaged with the two vertical beams respectively.
  • the fitting gap includes a first gap formed between the outer surface of the vertical beam and the inner surface of the engaging portion in the horizontal direction.
  • a first through hole is provided on the engaging portion, and the opening direction of the first through hole is parallel to the length direction of the beam; the upper end of the vertical beam is provided with a second through hole, and the second through hole is opened The hole direction is parallel to the opening direction of the first through hole; the connecting bracket includes: a connecting through shaft configured to pass through the first through hole and the second through hole in a state where the vertical beam is engaged with the engaging portion.
  • the mating gap includes: a second gap formed between the second through hole and the mating surface connecting the through shaft.
  • the fitting gap includes: a third gap formed in the vertical direction between the vertical beam and the engaging interface.
  • the third clearance is determined by the size of the wheeled ground walking device and the state of the ground on which the movable safety inspection device walks.
  • a first through hole is provided on the engaging portion, and the opening direction of the first through hole is parallel to the length direction of the crossbeam; the two side surfaces at the upper end of the vertical beam are provided with two connecting holes, two connecting The opening direction of the hole is parallel to the opening direction of the first through hole; the connecting bracket includes: two connecting short shafts, which are configured to pass through the first through hole when the vertical beam is engaged with the engaging portion, and Connect to one of the two connection holes.
  • the ground walking device includes: a wheel frame; at least two wheels disposed on the wheel frame and respectively located on the front and rear sides of the beam; and a walking drive device capable of driving at least two wheels to rotate around the wheel axis, In order to realize the walking of the wheeled ground walking device, and drive the wheels to swing relative to the wheel frame, so as to realize the steering of the wheeled ground walking device.
  • the article detection assembly includes: a ray cabin, which is disposed on one of the two vertical beams, the ray cabin includes a ray source, and is configured to emit detection rays to scan the articles passing through the portal frame; the detector, At least one of the two vertical beams, the crossbeam or the crossbeam and at least one of the two vertical beams are configured to detect the transmission signal or the scattering signal of the detection beam on the article for scanning imaging; and the protective wall is provided at The other of the two vertical beams.
  • FIG. 1 is a schematic diagram of a frontal angle structure of a movable security inspection device provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a side angle structure of a movable safety inspection device provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic structural view of a connecting bracket of a movable safety inspection device provided by an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural view of a connecting bracket of a movable security inspection device provided by another embodiment of the present disclosure.
  • the movable safety inspection equipment known by the inventor can break through the site limitation during the safety inspection and make the entire inspection system flexibly transition, which has strong applicability. It has been found through research that the inspection equipment needs to keep moving during the imaging process of the security inspection to be inspected. At this time, the ground conditions will have a greater impact on the imaging quality. On uneven roads or roads with more gravel, the imaging quality is often poor, and inspectors often cannot accurately determine the composition of the items to be inspected. In addition, long-term security inspections on the ground in poor condition may even cause varying degrees of damage to the scanning equipment.
  • the embodiments of the present disclosure provide a movable scanning device to adapt to uneven ground conditions to ensure the imaging quality of items to be inspected.
  • FIG. 1 is a schematic diagram of a frontal angle structure of a movable security inspection device provided by some embodiments of the present disclosure.
  • FIG. 2 is a schematic diagram of a side view angle structure of a movable security inspection device provided by some embodiments of the present disclosure. As shown in FIGS.
  • a movable safety inspection device provided by the present disclosure is characterized by comprising: a portal frame 1, including a beam 11 at the top, and being located on both sides of the beam 11 and connected to the beam 11 Two vertical beams 12; an item detection assembly 4 based on radiation imaging, at least partially provided on the portal frame 1, capable of detecting items passing through the portal frame 1; a wheeled ground walking device 5, respectively provided on two The lower end of the vertical beam 12 can move and steer the movable safety inspection device relative to the ground through its own walking motion; and the connecting bracket 3, connected to the upper end of at least one of the two vertical beams 12, is configured to support the connecting beam 11.
  • the connecting bracket 3 can form at least one fitting gap with the two vertical beams 12, the horizontal beams 11 or the horizontal beams 11, and the two vertical beams 12, respectively.
  • At least one gap is formed between the connecting bracket and the cross beam and/or the two vertical beams, so that the movable safety inspection device provided by the present disclosure can adapt to uneven ground conditions and ensure the imaging quality of the items to be inspected .
  • the object detection assembly 4 based on radiation imaging can observe the inside of an object using rays.
  • the item detection component 4 can obtain information such as the internal structure and density of the object without destroying the object, and has been widely used in security inspections at stations, docks, and airports.
  • the embodiment of the present disclosure forms the detection channel of the item to be scanned through the door frame 1 and the item detection assembly 4 and can be applied to a movable item to be detected, such as vehicle-mounted goods or measurement to be detected, etc., and can also be applied to a fixed Items to be tested.
  • the embodiment of the present disclosure can use the wheeled ground walking device 5 to drive the portal frame 1 through the objects to be scanned, and simultaneously perform scanning imaging to determine the objects to be scanned Whether there are dangerous substances or other items that do not comply with the law.
  • the beam 11 needs to be higher than the object to be detected, but has a higher height, is farther from the ground, and is more susceptible to the influence of the ground condition. A slight uneven ground or small volume of gravel will make the beam more comparable Large swings or deflections have a greater impact on the image quality of the items to be scanned.
  • the embodiment of the present disclosure connects the cross beam 11 and the vertical beam 12 by setting the connecting bracket 3 respectively, and forms at least one fitting gap with the two vertical beams 12 and/or the cross beam 11 by connecting the bracket 3 to change the cross beam of the related article detection assembly
  • the rigid connection with the vertical beam absorbs the impact on the beam due to uneven ground or small volume obstacles through more than one gap, so that the beam is stable during the driving of the wheeled ground walking device 5 to ensure the imaging quality of the items to be scanned .
  • the connecting bracket 3 includes: a fixing portion 31 that is fixedly connected to the crossbeam 11; and an engaging portion 32 that is provided at the lower end of the fixing portion 31 and can be engaged with the two vertical beams 12 respectively.
  • the snap-fit connection refers to inserting the upper end of the vertical beam 12 into the engaging portion 32 of the connection bracket 3 in a plug-in manner, and the engaging portion 32 forms a surrounding limit to the upper end of the vertical beam 12.
  • the surrounding limit formed by the engaging portion 32 on the upper end of the vertical beam 12 may be a full surrounding in the horizontal direction, or may be a limiting manner of half surrounding between a pair of side surfaces.
  • the connecting bracket in the embodiment of the present disclosure is provided with a fixing portion 31 and an engaging portion 32 to fix and connect the beam 11 to be supported with the fixing portion 31 and the vertical beam 12 without supporting to be connected with the engaging portion.
  • the connection bracket 3 forms a snap connection relationship with the vertical beam by using a snap connection method on the basis that the support connection of the cross beam 11 is kept stable.
  • the clamping connection relationship has a larger relative position margin between the connecting pieces, that is, by setting the clamping connection with different degrees of tightness, the gap between the vertical beam and the connecting bracket can be different.
  • the snap connection can set a larger gap to accommodate a greater degree of sway and Bumps.
  • FIG. 3 is a schematic structural view of a connecting bracket of a movable safety inspection device provided by an embodiment of the present disclosure.
  • the fitting gap includes: a first gap 71 formed in the horizontal direction between the outer surface of the vertical beam 1 and the inner surface of the engaging portion 32.
  • the first gap 71 can make the inner peripheral surface of the engaging portion abut against the upper end of the vertical beam when the vertical beam sways, and absorb the impact of the vertical beam swaying on the cross beam to a certain extent.
  • a first through hole is provided on the engaging portion, and the opening direction of the first through hole is parallel to the length direction of the beam; the upper end of the vertical beam is provided with a second through hole, and the second through hole is opened The hole direction is parallel to the opening direction of the first through hole; the connecting bracket includes: a connecting through shaft configured to pass through the first through hole and the second through hole in a state where the vertical beam is engaged with the engaging portion.
  • the vertical beam 12 and the connecting bracket 3 are hinged through the through shaft 6 to provide the vertical downward binding force for the connecting bracket 3,
  • the connection between the vertical beam and the cross beam is more stable.
  • the rotational freedom between the two is perpendicular to the inspection channel plane formed by the door frame 1, that is, the vertical beam 12 and the connecting bracket 3 can be Swing in the forward or backward direction of the movable safety inspection device.
  • the technical effect of connecting the vertical beam and the engaging portion through the through shaft 6 parallel to the longitudinal direction of the crossbeam 11 is that when the wheeled ground walking device encounters uneven ground conditions, for example, when it encounters a small stone, it will move the safety inspection
  • the corner of the wheeled ground walking device on one side of the device is raised, the vertical beam 12 on the same side is bound to deflect accordingly.
  • the vertical beam 12 cannot deflect relative to the vertical direction
  • the through shaft 6 parallel to the length and square of the crossbeam 11 is transmitted to the crossbeam 11 and the crossbeam 11 is twisted accordingly.
  • the mating gap includes: a second gap formed between the second through hole and the mating surface connecting the through shaft.
  • the second gap 72 can effectively absorb the influence of the uneven road surface on the beam 11, and the bumps and vibrations transmitted by the vertical beam 1 are absorbed in the second gap 72 without affecting the beam 11.
  • the fitting gap includes: a third gap formed in the vertical direction between the vertical beam and the engaging interface.
  • the connecting bracket no longer closely fits the upper end of the vertical beam 12 under the gravity of the beam 11, but can optionally have a certain gap, and the third gap 73 can accommodate the vertical beam 12 in connection A certain degree of deflection in the engaging portion 32 of the bracket 3 makes the beam 11 continue to be stable.
  • the third gap 73 is determined by the size of the wheeled ground walking device 5 and the state of the ground on which the movable safety inspection device walks. Taking the ground walking device 5 as an example, when the size of the ground walking device 5 is small, the uneven ground makes the vertical beam 12 disposed thereon have a larger deflection angle. At this time, in order to absorb the influence of the deflection on the beam, the third gap 73 should be selectively set to a larger range. Correspondingly, when the ground conditions are not good, the third gap 73 should also be set larger to cope with frequent deflection or vibration of the vertical beam 3.
  • connection bracket includes: two connection stub shafts 8, which are configured to pass through when the vertical beam and the engaging portion are engaged and connected Pass the first through hole and connect to one of the two connection holes.
  • connection of the short shaft 8 as an alternative to the through shaft can make the upper end of the vertical beam only need to process a pair of connection holes, which reduces the difficulty of processing and reduces the cost of the connection shaft.
  • the vertical beam and the engaging portion can also be articulated by other shaft parts, and only need to continue to form a corresponding gap between the connecting bracket and the cross beam and/or vertical beam to Absorb the impact of uneven ground on the beam to ensure the stability of the beam.
  • the ground walking device includes: a wheel frame; at least two wheels disposed on the wheel frame 51 and respectively located on the front and rear sides of the beam 11; and a walking drive device capable of driving at least two wheels Rotating around the wheel axis to realize the walking of the wheeled ground walking device, and driving the wheels to swing relative to the wheel frame to realize the steering of the wheeled ground walking device.
  • the wheeled walking device 5 may be configured as a wheel-body machine with autonomous walking capability, or as a pulley mechanical component matched with a preset slide rail direction.
  • the wheeled walking device 5 can make the movable safety inspection device have a moving ability, thereby facilitating the transition, position adjustment and detection of the stationary object to be inspected of the movable safety inspection device.
  • the wheeled walking device 5 as the part of the portal frame 1 that is in contact with the ground should have strong stability in the detection state, so it can be matched with fixed legs or other components to provide the item detection device in a stationary state Stability. And it can be configured to cushion shock-absorbing components, such as shock-absorbing springs, etc., to reduce the influence of road surface conditions on the door frame 1.
  • the article detection assembly includes: a ray cabin, which is disposed on one of the two vertical beams, the ray cabin includes a ray source, and is configured to emit detection rays to scan the articles passing through the portal frame 1; , At least one of the two vertical beams 12, the horizontal beam 11 or at least one of the horizontal beams 11 and the two vertical beams 12, is configured to detect the transmission signal or scattering signal of the detection beam on the article for scanning imaging; And the protective wall is set on the other of the two vertical beams.
  • the position of the detector includes the same vertical beam as the vertical beam where the ray source is located, and three positions of the beam.
  • the signal detected by the detector is mainly the projection signal; while when the detector is arranged on the vertical beam where the ray source is located
  • the signal detected by the detector is mainly scattered signal.
  • the projected signal and the scattered signal can reflect different information of the item to be detected, and thus have different imaging principles and detection focuses, and can be selectively set according to the type of the item to be detected or the working scene of the item detection device.

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  • High Energy & Nuclear Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
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Abstract

一种可移动式安全检查装置，包括：门式框架（1），包括位于顶部的横梁（11），和位于横梁（11）两侧并与横梁（11）连接的两个竖梁（12）；基于辐射成像的物品检测组件（4），至少部分地设置于门式框架（1），被配置为对通过门式框架（1）的物品进行检测；轮式地面行走装置（5），分别设置在两个竖梁（12）的下端，能够通过自身的行走运动使可移动式安全检查装置相对于地面行走和转向；以及连接支架（3），连接在两个竖梁（12）中至少一个的上端，被配置为支撑连接横梁（11），连接支架（3）能够分别与两个竖梁（12）、横梁（11）、或横梁（11）和两个竖梁（12）形成至少一个配合间隙。

Description

可移动式安全检查装置
相关申请的交叉引用
本申请是以CN申请号为201910009066.X，申请日为2019/01/04的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及安全检测领域，尤其涉及一种可移动式安全检查装置。
背景技术
目前对物品的安全检查多以辐射成像的原理，在不破坏物体的情况下获得物体内部的结构和密度等信息，被广泛地应用于车站、机场、码头等各种需要安全检查的场景。发明人知晓的基于辐射成像的安全检查装置包括两种扫描方式，其中一种以检测设备固定不动，待检查物品运动并通过扫描区域的方式对待检查物品扫描成像；另一种以待检测物品固定不动，检测设备移动，并使扫描区域通过待检查物品的方式对检查物品扫描成像。
发明内容
在本公开的一个方面，提供一种可移动式安全检查装置，包括：门式框架，包括位于顶部的横梁，和位于横梁两侧并与横梁连接的两个竖梁；基于辐射成像的物品检测组件，至少部分地设置于门式框架，被配置为对通过门式框架的物品进行检测；轮式地面行走装置，分别设置在两个竖梁的下端，能够通过自身的行走运动使可移动式安全检查装置相对于地面行走和转向；以及连接支架，连接在两个竖梁中至少一个的上端，被配置为用于支撑连接横梁，连接支架能够分别与两个竖梁、横梁或横梁和两个竖梁形成至少一个配合间隙。
在一些实施例中，连接支架包括：固定部，与横梁固定连接；以及卡合部，设置于固定部下端，能够与两个竖梁分别卡合连接。
在一些实施例中，配合间隙包括：第一间隙，沿水平方向形成在竖梁的外表面与卡合部的内表面之间。
在一些实施例中，在卡合部上设有第一通孔，第一通孔的开孔方向平行于横梁的 长度方向；竖梁的上端设有第二通孔，第二通孔的开孔方向与第一通孔的开孔方向平行；连接支架包括：连接通轴，被配置为在竖梁与卡合部卡合连接状态下，穿过第一通孔和第二通孔。
在一些实施例中，配合间隙包括：第二间隙，形成在第二通孔与连接通轴的配合面之间。
在一些实施例中，配合间隙包括：第三间隙，形成在竖梁与卡合接口之间的竖直方向。
在一些实施例中，第三间隙由轮式地面行走装置的尺寸，以及可移动式安全检查装置所行走的地面状态确定。
在一些实施例中，在卡合部上设有第一通孔，第一通孔的开孔方向平行于横梁的长度方向；竖梁上端的两个侧面设有两个连接孔，两个连接孔的开孔方向与第一通孔的开孔方向平行；连接支架包括：两个连接短轴，被配置为在竖梁与卡合部卡合连接状态下，穿过第一通孔，并连接至两个连接孔之一。
在一些实施例中，地面行走装置包括：轮架；至少两个车轮，设置在轮架，并分别位于横梁的前侧和后侧；和行走驱动装置，能够驱动至少两个车轮绕轮轴转动，以实现轮式地面行走装置的行走，以及驱动车轮相对于轮架摆动，以实现轮式地面行走装置的转向。
在一些实施例中，物品检测组件包括：射线舱体，设置于两个竖梁之一，射线舱体包括射线源，被配置为发射探测射线对通过门式框架的物品进行扫描；探测器，设置于两个竖梁中的至少一个、横梁或横梁和两个竖梁中的至少一个，被配置为探测探测射线在物品上的透射信号或散射信号，以扫描成像；和防护墙，设置于两个竖梁中的另一个。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1为本公开实施例所提供的可移动式安全检查装置正视角度结构示意图；
图2为本公开实施例所提供的可移动式安全检查装置侧视角度结构示意图；
图3为本公开实施例所提供的可移动式安全检查装置连接支架结构示意图。
图4为本公开另一实施例所提供的可移动式安全检查装置连接支架结构示意图。
各附图标记分别代表：
1-门式框架，11-横梁，12-竖梁，21-第二通孔，3-连接支架，31-固定部，32-卡合部，321-第一通孔，4-物品检测组件，41-射线舱体，42-探测器，43-防护墙，5-轮式地面行走装置，51-轮架，52-车轮，53-行走驱动装置，6-通轴，71-第一间隙，72-第二间隙，73-第三间隙，8-连接短轴。
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作出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。
除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本公开的范围。同时，应当明白，为了便于描述，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。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，技术、方法和设备应当被视为授权说明书的一部分。在这里示出和讨论的所有示例中，任何具体值应被解释为仅仅是示例性的，而不是作为限制。因此，示例性实施例的其它示例可以具有不同的值。应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步讨论。
发明人知晓的可移动式安全检查设备在进行安全检查时能够突破场地限制，并使整个检查系统灵活转场，具有较强的适用性。经研究发现，由于对待检测安全检查成像的过程中，检测设备需要始终保持移动。此时，地面状况会对成像质量产生较大的影响，在坑洼不平或具有较多碎石的路面，成像质量往往较差，检查人员往往无法准确判断待检测物品的成分。此外，长期在状况不佳的地面进行安全检查，甚至会对扫描设备产生程度不一的损坏。
有鉴于此，本公开实施例提供一种可移动扫描设备，以适应不平整的地面状况，保证对待检查物品的成像质量。
图1为本公开一些实施例所提供的可移动式安全检查装置正视角度结构示意图。 图2为本公开一些实施例所提供的可移动式安全检查装置侧视角度结构示意图。如图1、2所示，本公开提供的一种可移动式安全检查装置，其特征在于，包括：门式框架1，包括位于顶部的横梁11，和位于横梁11两侧并与横梁11连接的两个竖梁12；基于辐射成像的物品检测组件4，至少部分地设置于门式框架1，能够对通过门式框架1的物品进行检测；轮式地面行走装置5，分别设置在两个竖梁12的下端，能够通过自身的行走运动使可移动式安全检查装置相对于地面行走和转向；以及连接支架3，连接在两个竖梁12中至少一个的上端，被配置为支撑连接横梁11，连接支架3能够分别与两个竖梁12、横梁11或横梁11和两个竖梁12形成至少一个配合间隙。
本公开实施例通过连接支架与横梁和/或两个竖梁之间形成至少一个间隙，使本公开所提供的可移动式安全检查装置能够适应不平整的地面状况，保证对待检查物品的成像质量。
基于辐射成像的物品检测组件4可以利用射线观察物体内部。物品检测组件4可以在不破坏物体的情况下获得物体内部的结构和密度等信息，目前已经广泛应用于车站、码头和机场的安检。本公开实施例通过门式框架1以及物品检测组件4，形成了对待扫描物品的检测通道，可以被应用于可移动的待检测物品，例如车载货物或待检测测量等，也可以被应用于固定的待检测物品。
针对于不便于移动的待扫描物品，例如码头集装箱等，本公开实施例借助轮式地面行走装置5可以使门式框架1行驶通过待扫描物品，并同时进行扫描成像，以判断待扫描物品中是否存在危险物质或其他不符合法律规定的物品。
本公开实施例中横梁11由于需要高于待检测物品，而具有较高的高度，距离地面较远，更容易受到地面状况的影响，稍许的地面不平或小体积的碎石都会使横梁产生比较大幅度的晃动或偏斜，对待扫描物品的成像质量产生较大的影响。对于此，本公开实施例通过设置连接支架3，分别连接横梁11和竖梁12，并通过连接支架3与两个竖梁12和/或横梁11形成至少一个配合间隙，改变相关物品检测组件横梁与竖梁刚性连接的方式，通过不止一个间隙吸收由于地面不平或小体积障碍物对于横梁的冲击，使横梁在轮式地面行走装置5行驶过程中保持稳定性，以保证对待扫描物品的成像质量。
在一些实施例中，，连接支架3包括：固定部31，与横梁11固定连接；以及卡合部32，设置于固定部31下端，能够与两个竖梁12分别卡合连接。
卡合连接是指将竖梁12的上端以插接的方式嵌入连接支架3的卡合部32，并且 卡合部32对竖梁12的上端形成包围限位。并且，卡合部32对竖梁12上端所形成的包围限位可以为水平方向的全包围，也可以是一对侧面之间半包围的限位方式。
本公开实施例中的连接支架通过设置固定部31以及卡合部32，将需要支撑的横梁11以固定部31固定连接，将无须支撑的竖梁12以卡合部卡合连接。通过分离支撑功能及减少冲击功能，连接支架3在对横梁11的支撑连接保持稳固的基础上，运用卡合连接的方式与竖梁形成卡合连接关系。
卡合连接关系相对于刚性连接而言，具有较大的连接件间的相对位置余量，即通过设置不同松紧程度地卡合连接，可以使竖梁与连接支架之间具有不同的间隙。例如，对于更多应用于固定待检测物品，且行驶路面状况较差的可移动扫描设备而言，卡合连接可以设置较大的间隙，以适应竖梁在行驶过程中更大程度的摇摆与颠簸。
图3为本公开实施例所提供的可移动式安全检查装置连接支架结构示意图。如图3所示，在一些实施例中，配合间隙包括：第一间隙71，形成在竖梁1的外表面与卡合部32的内表面之间的水平方向。
在通过卡合连接的竖梁与卡合部之间，由于重力作用，竖梁上端将与卡合部紧密贴合，此时竖梁外周面与卡合部的内周面之间就形成了第一间隙71。第一间隙71可以在竖梁出现摇晃时，使卡合部的内周面与竖梁的上端进行贴合抵靠，在一定程度上吸收由于竖梁摇晃对横梁所产生的冲击。
在一些实施例中，在卡合部上设有第一通孔，第一通孔的开孔方向平行于横梁的长度方向；竖梁的上端设有第二通孔，第二通孔的开孔方向与第一通孔的开孔方向平行；连接支架包括：连接通轴，被配置为在竖梁与卡合部卡合连接状态下，穿过第一通孔和第二通孔。
在连接支架3与竖梁12之间以卡合部进行卡合连接的基础上，通过通轴6将竖梁12与连接支架3铰接，为连接支架3提供了竖直向下的约束力，使得竖梁与横梁之间的连接更加稳固。此外，通过通轴6将竖梁12与连接支架3铰接时，还保留了两者之间垂直于门式框架1所形成的检查通道平面的转动自由度，即竖梁12与连接支架3可以在可移动式安全检查装置的前进方向或后退进行摆动。
通过平行与横梁11长度方向的通轴6连接竖梁与卡合部所产生的技术效果在于：使得轮式地面行走装置遇到地面不平坦状况时，例如遇到小石子将可移动式安全检查装置一侧的轮式地面行走装置的一角垫高时，同侧的竖梁12势必会产生相应的偏转，此时在通轴6的连接作用下，竖梁12相对于竖直方向的偏转无法通过与横梁11长度 方寸平行的通轴6传递给横梁11，并使横梁11随之扭转。
在一些实施例中，配合间隙包括：第二间隙，形成在第二通孔与连接通轴的配合面之间。第二间隙72能够有效吸收由于路面不平对横梁11所产生的影响，将由竖梁1所传导的颠簸与振动在第二间隙72被吸收，而不对横梁11产生影响。
在一些实施例中，配合间隙包括：第三间隙，形成在竖梁与卡合接口之间的竖直方向。
通过通轴6的连接，连接支架不再在横梁11的重力作用下与竖梁12的上端紧密贴合，而是可以有选择地具有一定的间隙，第三间隙73能够容纳竖梁12在连接支架3卡合部32内一定程度的偏转，使得横梁11继续保持平稳。
在一些实施例中，第三间隙73由轮式地面行走装置5的尺寸，以及可移动式安全检查装置所行走的地面状态确定。以地面行走装置5为例，当地面行走装置5尺寸较小时，地面不平使设置在其上的竖梁12具有更大的偏转角度，此时，为了吸收该偏转对于横梁的影响，第三间隙73应当被有选择地设置在更大的范围。相应的，当地面状况不佳时，第三间隙73也应当被设置地较大，以应对竖梁3频繁的偏转即振动。
图4为本公开另一实施例所提供的可移动式安全检查装置连接支架结构示意图。如图4所示，在一些实施例中，在卡合部上设有第一通孔，第一通孔的开孔方向平行于横梁的长度方向；竖梁上端的两个侧面设有两个连接孔，两个连接孔的开孔方向与第一通孔的开孔方向平行；连接支架包括：两个连接短轴8，被配置为在竖梁与卡合部卡合连接状态下，穿过第一通孔，并连接至两个连接孔之一。
连接短轴8作为通轴的替代，可以使得竖梁上端仅需加工一对连接孔，降低了加工难度的同时，也减少了连接轴的成本。除了短轴以外，本领域技术人员应当可以想到，竖梁与卡合部还可以通过其他轴类零件进行铰接，只需继续使连接支架与横梁和/或竖梁之间形成相应的间隙，以吸收地面不平对于横梁的冲击，保证横梁的稳定。
在一些实施例中，地面行走装置包括：轮架；至少两个车轮，设置在轮架51，并分别位于所述横梁11的前侧和后侧；和行走驱动装置，能够驱动至少两个车轮绕轮轴转动，以实现轮式地面行走装置的行走，以及驱动车轮相对于轮架摆动，以实现轮式地面行走装置的转向。
轮式行走装置5可以被配置为具有自主行走能力的轮体机械，也可以被配置为与预设的滑轨向配套的滑轮机械组件。轮式行走装置5可以使可移动式安全检查装置具 有移动能力，从而方便可移动式安全检查装置的转场、位置调整以及对静止待检测物品的检测。
轮式行走装置5作为门式框架1与地面相接触的部件，应当在检测状态下具有较强的稳定性，因而可以配套以固定支腿或其他部件，以提供物品检测装置在静止状态下时的稳定性。并且可以配置以缓冲减震部件，例如减震弹簧等，以减少路面状况对门式框架1的影响。
在一些实施例中，物品检测组件包括：射线舱体，设置于两个竖梁之一，射线舱体包括射线源，被配置为发射探测射线对通过门式框架1的物品进行扫描；探测器，设置于两个竖梁12中的至少一个、横梁11或横梁11和两个竖梁12中的至少一个，被配置为探测探测射线在物品上的透射信号或散射信号，以便进行扫描成像；和防护墙，设置于两个竖梁中的另一个。
探测器设置的位置包括与射线源所在的竖梁相同、相对的竖梁，以及设置于横梁三种位置。对应的，当探测器设置于与射线源所在的竖梁相对的竖梁和/或设置于横梁时，探测器探测的信号以投射信号为主；而当探测器设置于与射线源所在的竖梁相同的竖梁时，探测器探测的信号以散射信号为主。投射信号与散射信号能够反映待检测物品的不同信息，因而具有不同的成像原理与检测侧重点，可以依据待检测物品的种类或物品检测装置的工作场景有选择的设置。
最后应当说明的是：以上实施例仅用以说明本公开的技术方案而非对其限制；尽管参照较佳实施例对本公开进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本公开的具体实施方式进行修改或者对部分技术特征进行等同替换；而不脱离本公开技术方案的精神，其均应涵盖在本公开请求保护的技术方案范围当中。

Claims (10)

  1. 一种可移动式安全检查装置，包括：
    门式框架(1)，包括位于顶部的横梁(11)，和位于所述横梁(11)两侧并与所述横梁(11)连接的两个竖梁(12)；
    基于辐射成像的物品检测组件(4)，至少部分地设置于所述门式框架(1)，被配置为对通过所述门式框架(1)的物品进行检测；
    轮式地面行走装置(5)，分别设置在所述两个竖梁(12)的下端，能够通过自身的行走运动使所述可移动式安全检查装置相对于地面行走和转向；以及
    连接支架(3)，连接在所述两个竖梁(12)中至少一个的上端，被配置为支撑连接所述横梁(11)，所述连接支架(3)能够分别与所述两个竖梁(12)、所述横梁(11)、或所述横梁(11)和所述两个竖梁形成至少一个配合间隙。
  2. 根据权利要求1所述的安全检查装置，其中，所述连接支架(3)包括：
    固定部(31)，与所述横梁(11)固定连接；以及
    卡合部(32)，设置于所述固定部(31)下端，能够与所述两个竖梁(12)分别卡合连接。
  3. 根据权利要求2所述的安全检查装置，其中，所述配合间隙包括：
    第一间隙(71)，沿水平方向形成在所述竖梁(12)的外表面与所述卡合部(32)的内表面之间。
  4. 根据权利要求2所述的安全检查装置，其中，在所述卡合部(32)上设有第一通孔(321)，所述第一通孔(321)的开孔方向平行于所述横梁(11)的长度方向；
    所述竖梁(12)的上端设有第二通孔(21)，所述第二通孔(21)的开孔方向与所述第一通孔(321)的开孔方向平行；
    所述连接支架(3)包括：
    连接通轴(6)，被配置为在所述竖梁(12)与所述卡合部(32)卡合连接状态下，穿过所述第一通孔(321)和所述第二通孔(21)。
  5. 根据权利要求4所述的安全检查装置，其中，所述配合间隙包括：
    第二间隙(72)，形成在所述第二通孔(21)与所述连接通轴(6)的配合面之间。
  6. 根据权利要求4所述的安全检查装置，其中，所述配合间隙包括：
    第三间隙(73)，形成在所述竖梁(12)与所述卡合接口之间的竖直方向。
  7. 根据权利要求6所述的安全检查装置，其中，所述第三间隙(73)由所述轮式地面行走装置(5)的尺寸，以及所述可移动式安全检查装置所行走的地面状态确定。
  8. 根据权利要求2所述的安全检查装置，其中，在所述卡合部(32)上设有第一通孔(321)，所述第一通孔(321)的开孔方向平行于所述横梁(11)的长度方向；
    所述竖梁(12)上端的两个侧面设有连接孔，所述连接孔的开孔方向与所述第一通孔(321)的开孔方向平行；
    所述连接支架(3)包括：
    两个连接短轴(8)，被配置为在所述竖梁(12)与所述卡合部(32)卡合连接状态下，穿过所述第一通孔(321)，并连接至所述连接孔。
  9. 根据权利要求1所述的安全检查装置，其中，所述地面行走装置包括：
    轮架(51)；
    至少两个车轮(52)，设置在所述轮架(51)，并分别位于所述横梁(11)的前侧和后侧；和
    行走驱动装置(53)，能够驱动所述至少两个车轮(52)绕轮轴转动，以实现所述轮式地面行走装置(5)的行走，以及驱动所述车轮相对于所述轮架(51)摆动，以实现所述轮式地面行走装置(5)的转向。
  10. 根据权利要求1所述的安全检查装置，其中，所述物品检测组件(4)包括：
    射线舱体(41)，设置于所述两个竖梁(12)之一，所述射线舱体(41)包括射线源，被配置为发射探测射线对通过所述门式框架(11)的物品进行扫描；
    探测器(42)，设置于所述两个竖梁(12)中的至少一个、所述横梁(11)或所 述横梁(11)和所述两个竖梁(12)中的至少一个，被配置为探测所述探测射线在所述物品上的透射信号或散射信号，以扫描成像；和
    防护墙(43)，设置于所述两个竖梁(12)中的另一个。
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