WO2019214325A1 - Ct检查系统 - Google Patents

Ct检查系统 Download PDF

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Publication number
WO2019214325A1
WO2019214325A1 PCT/CN2019/076610 CN2019076610W WO2019214325A1 WO 2019214325 A1 WO2019214325 A1 WO 2019214325A1 CN 2019076610 W CN2019076610 W CN 2019076610W WO 2019214325 A1 WO2019214325 A1 WO 2019214325A1
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WO
WIPO (PCT)
Prior art keywords
rotating
wheel
bracket
drive
inspection system
Prior art date
Application number
PCT/CN2019/076610
Other languages
English (en)
French (fr)
Inventor
宋全伟
李荐民
高克金
李玉兰
史俊平
何远
孟辉
李元景
韩文学
宗春光
周合军
陈志强
张丽
Original Assignee
清华大学
同方威视技术股份有限公司
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Filing date
Publication date
Application filed by 清华大学, 同方威视技术股份有限公司 filed Critical 清华大学
Publication of WO2019214325A1 publication Critical patent/WO2019214325A1/zh
Priority to PL435900A priority Critical patent/PL435900A1/pl
Priority to DKPA202070814A priority patent/DK202070814A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computerised tomographs
    • A61B6/032—Transmission computed tomography [CT]
    • A61B6/035—Mechanical aspects of CT
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4411—Constructional features of apparatus for radiation diagnosis the apparatus being modular
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
    • 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
    • G01N23/046—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 using tomography, e.g. computed tomography [CT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/03—Investigating materials by wave or particle radiation by transmission
    • G01N2223/04—Investigating materials by wave or particle radiation by transmission and measuring absorption
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/40—Imaging
    • G01N2223/419—Imaging computed tomograph

Definitions

  • the present disclosure relates to the field of CT detection technology, and in particular to a CT inspection system.
  • CT inspection systems are widely used in technical fields such as article inspection, and can detect not only small items such as bags and air boxes, but also large items such as containers and vehicles.
  • the CT inspection system scans the sample to be detected by the radiation source that generates high-energy X-rays and the detection device that can receive the X-rays passing through the object to be detected, and reflects the change in the density distribution of the object to be inspected according to the change in the intensity of the X-rays, and The ray intensity change is converted into an image gradation to obtain a fluoroscopic image of the object to be inspected.
  • the radiation source device and the detecting device are usually arranged in a synchronously rotatable manner, and the object to be inspected is scanned during the rotation.
  • the rotation stability of the radiation source device and the detection device is poor, which not only affects the service life of various structural components of the CT inspection system, but also affects image quality.
  • One technical problem to be solved by the present disclosure is to improve the rotational stability of the radiation source device and the detecting device of the CT inspection system.
  • a CT inspection system including:
  • a scanning unit disposed on the rotating bracket and including a source device and a correspondingly disposed detecting device
  • a rotary driving device comprising a rotary driving unit comprising a support beam and two wheel drive mechanisms having drive wheels, the support beam being swingably disposed, the two wheel drive mechanisms being disposed on the support beam and located at the center of the support beam swing On both sides, when the driving wheel rotates, the scanning unit is rotated by driving the rotating bracket to rotate.
  • the drive wheel is a friction wheel that rotates the rotary bracket by applying friction to the rotating bracket as it rotates.
  • the rotating bracket includes a bracket body and a rotating rail, the rotating rail is disposed on the bracket body, at least one rotating driving unit is disposed corresponding to the rotating rail, and the driving wheel rotates by applying a frictional force to the rotating rail when rotating The bracket rotates.
  • the two rotary drive units are disposed below the rotating track and on either side of the axis of rotation of the rotating bracket.
  • the CT inspection system includes two rotating tracks that are sequentially spaced along the axis of rotation of the rotating support.
  • the driving wheel is a gear
  • the rotating bracket is provided with a ring gear that meshes with the driving wheel. Under the cooperation of the driving wheel and the ring gear, the rotating wheel can be rotated when the driving wheel rotates.
  • the rotary drive unit further includes a power unit that is drivingly coupled to the two wheel drive mechanisms and for driving the drive wheels of the two wheel drive mechanisms to rotate.
  • the CT inspection system further includes a positioning structure for positioning the rotating bracket in the direction of the axis of rotation of the rotating bracket.
  • the detection device is curved in a center of the source device.
  • the CT inspection system includes two scanning units that are spaced apart from one another on a rotating support.
  • the swingable support beam is capable of automatically distributing the load to the other by swinging when one of the two wheel drive mechanisms located on both sides of the swing center thereof is subjected to a large load, so that the respective wheel drive mechanisms can be relatively
  • the pressure is balanced and, therefore, a more stable rotation process of the rotating bracket can be realized, thereby effectively improving the rotational stability of the radiation source device and the detecting device that are rotated by the rotating bracket.
  • FIG. 1 is a front view showing the structure of a CT inspection apparatus according to an embodiment of the present disclosure.
  • Figure 2 is a side view showing the structure of Figure 1.
  • orientation words such as “front, back, up, down, left, right", “horizontal, vertical, vertical, horizontal” and “top, bottom”, etc. indicate the orientation.
  • positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the disclosure and the simplification of the description, which does not indicate or imply the indicated device or component. It must be constructed and operated in a specific orientation or in a specific orientation, and thus is not to be construed as limiting the scope of the disclosure; the orientations “inside and outside” refer to the inside and outside of the contour of the components themselves.
  • FIG. 1-2 illustrate one embodiment of a CT inspection system of the present disclosure.
  • a CT inspection system provided by the present disclosure includes:
  • a scanning unit disposed on the rotating support 3 and including the radiation source device 1 and the correspondingly disposed detecting device 2;
  • the rotary drive device comprises a rotary drive unit comprising a support beam 5 and two wheel drive mechanisms having drive wheels 4, the support beam 5 being pivotably disposed, the two wheel drive mechanisms being disposed on the support beam 5 and located on the support On both sides of the swing center of the beam 5, when the drive wheel 4 rotates, the scan unit is rotated by driving the rotary bracket 3 to rotate.
  • the present disclosure sets the radiation source device 1 and the detecting device 2 to be rotated by the same rotating bracket 3, and the rotational synchronization is more easily ensured, and the present disclosure utilizes two wheel drive mechanisms located on both sides of the swing center of the swingable support beam 5 to The rotation of the rotating bracket 3 is driven, and the support beam 5 can automatically distribute the load to the other wheel drive mechanism by swinging when the load of one wheel drive mechanism is large, so that each wheel drive mechanism can bear the load more evenly, and therefore,
  • the rotating bracket 3 is rotated more stably, and the rotation stability of the radiation source device 1 and the detecting device 2 is effectively improved, which is beneficial to improving the image quality of the CT inspection system, improving the detection accuracy, and extending the structural components of the CT inspection system.
  • the service life is beneficial to improving the image quality of the CT inspection system, improving the detection accuracy, and extending the structural components of the CT inspection system.
  • the drive wheel 4 of the wheel drive mechanism may be a gear.
  • a ring gear for engaging the drive wheel 4 may be provided on the rotary bracket 3, so that the cooperation between the drive wheel 4 and the ring gear is provided.
  • the rotation of the rotating bracket 3 and the scanning unit can be realized; or the driving wheel 4 of the wheel driving mechanism can also use the friction wheel instead of the gear, in this case, the driving wheel 4 can pass the rotating bracket 3 when rotating.
  • the frictional force is applied to rotate the rotating bracket 3 to realize a friction driving process.
  • the driving wheel 4 is a gear
  • the rotation adaptive self-starting of the rotating bracket 3 and the scanning unit can be realized, and the wear and tear of the starting torque is excessively prevented during the gear transmission.
  • the rotating bracket 3 of the present disclosure may include a bracket body 31, which may be provided in a circular ring shape, on the one hand, is more convenient for the relative arrangement of the radiation source device 1 and the detecting device 2 of the scanning unit, and is also more convenient to rotate on the other hand. control.
  • the driving wheel 4 is provided as a friction wheel as described above, the driving wheel 4 can directly contact the bracket body 31, and the rotating bracket 3 can be rotated by directly applying frictional force to the bracket body 31 when rotating; or Further, a rotating rail 32 is provided on the bracket body 31 so that the driving wheel 4 is no longer directly in contact with the bracket body 31, but is in contact with the rotating rail 32, and the rotating bracket 3 is rotated by applying a frictional force to the rotating rail 32 during rotation.
  • the rotating track 32 can be made of a special material that has been heat treated to improve its strength, hardness and wear resistance.
  • the number of the rotating rails 32 may be one or two or more. Wherein, when the number of the rotating rails 32 is two, the two rotating rails 32 can be sequentially arranged along the rotation axis of the rotating bracket 31 to form a double rail supporting structure, so that the bracket body 31 can be realized based on a relatively simple structure. Stable support and easy positioning of the center of gravity of the rotating portion of the CT inspection system between the two rotating tracks 32 enhances operational stability. It can be seen that the dual track support structure can be used to further improve the rotation stability of the CT inspection system based on a relatively simple structure, and it is convenient to obtain a more stable and clear image.
  • the number of the rotary drive units may be one, two or more for each of the rotary tracks 32.
  • the number of the rotary drive units is two for each of the rotary tracks 32, and the two rotary drive units are disposed below the rotary track 32, and the two rotary drive units are located on both sides of the rotation axis of the rotary bracket 3, such that
  • the rotary driving device can drive the rotation of the rotating bracket 3 more smoothly, but also the rotating driving unit can stably support the rotating bracket 3 and enhance the structural stability of the CT inspection system.
  • the CT inspection system includes a scanning unit, a rotating bracket 3, and a rotary driving device.
  • the scanning unit is disposed on the rotating bracket 3, and is rotated by the driving of the rotary driving device.
  • the brackets 3 rotate together.
  • the rotating bracket 3 is used to provide a mounting base for the scanning unit, and is used to drive the scanning unit to rotate to realize the rotational scanning of the object to be inspected.
  • the rotary bracket 3 of this embodiment includes a bracket body 31 and two rotating rails 32.
  • the bracket body 31 has an annular shape, the central axis of which forms the rotation axis of the rotating bracket 3, and the inner space thereof forms a passage passage for the object to be inspected.
  • the two rotating rails 32 are fixed to the outer surface of the bracket body 31, and are also annularly shaped, and are arranged at intervals along the central axis of the bracket body 31, that is, sequentially spaced along the rotation axis of the rotating bracket 3. .
  • the rotating bracket 3 has a double track structure, which is convenient to cooperate with the driving device to achieve a more stable rotation process.
  • the scanning unit is used for scanning a test object, which includes the radiation source device 1 and the detecting device 2.
  • the radiation source device 1 is for generating X-rays that penetrate the object to be inspected, which may employ an X-ray machine or an accelerator.
  • the detecting device 2 is configured to receive X-rays passing through the object to be inspected, and convert the received X-rays into electrical signals that can be recorded for use by the imaging device of the CT inspection system to generate CT images, which may be detected by using Array structure.
  • the CT inspection system of this embodiment includes two scanning units, and the two scanning units are disposed on the rotating bracket 3 at intervals from each other. Specifically, the two scanning units are along the circumferential direction of the rotating bracket 3. The spacers are arranged such that the two scanning units are arranged at an angle to the swivel bracket 3 .
  • the advantage of setting two scanning units is that the scanning of different angles of the object to be inspected can be completed at one time, the inspection process is more efficient, and the inspection result is more reliable. Specifically, in FIG.
  • the two scanning units of the embodiment wherein the radiation source device 1 of one scanning unit is disposed at the top of the rotating bracket 3, and the radiation source device 1 of the other scanning unit is disposed at the rotating bracket
  • the side of the 3 so that it is convenient to carry out the top scan and the side scan of the sample according to the actual situation, to obtain a more comprehensive scan result that meets the demand.
  • the structures of the two scanning units are set to be the same. Therefore, for the sake of simplicity of description, only one of the scanning units will be described below as an example.
  • the radiation source device 1 and the detecting device 2 of the scanning unit are both disposed on the rotary holder 3.
  • the radiation source device 1 and the detecting device 2 are both disposed on the holder body 31. 1
  • the radiation source device 1 is disposed on the outer circumference of the stent body 31
  • the detecting device 2 is disposed on the inner circumference of the stent body 31 and disposed opposite to the radiation source device 1.
  • the radiation source device 1 can emit X-rays to penetrate the object to be inspected, and the X-rays penetrating the object to be inspected can be incident on the detecting device disposed opposite to the source device 1 2, in turn, a CT image can be formed.
  • a cut surface of the object to be inspected is placed in the passage through the channel, and the corresponding section of the object to be scanned of the device to be scanned is scanned.
  • the object to be inspected is pulled by the traction device of the CT inspection system to the next slice position in the passageway to complete the scan of the next slice. This continues until the entire scan of the object is completed.
  • the object to be inspected may be a large cargo (such as a container), a vehicle or an airplane.
  • the detecting device 2 of this embodiment is disposed in an arc shape centering on the corresponding source device 1.
  • the detecting device 2 employs a detector array structure in which a plurality of detectors are arranged in an array on the detecting arm, and the detecting arms are curved in the center of the radiation source device 1.
  • the detecting device 2 Since the detecting device 2 has an arc centered on the source device 1, the distance between the different portions of the detecting device 2 and the source device 1 is the same, that is, each detector in the detector array is away from the source device 1 The distance is the same, and the arrangement of the source isometric is more convenient for imaging than the method in which the source is not equidistant (for example, the detecting device 2 is curved in the center of the rotating bracket 3), and at the same time, Subsequent related calculation analysis is also more simple and convenient, which is conducive to improving the accuracy of inspection.
  • the rotary drive unit is drivingly coupled to the rotary bracket 3 and is used to rotate the scanning unit by driving the rotary bracket 3 to rotate.
  • the rotary driving device includes four rotary driving units, each of which is disposed below the rotating bracket 3, and the two corresponding to the two rotating tracks 32 It is provided that, in this embodiment, each of the rotating tracks 32 corresponds to two rotary drive units.
  • two rotary drive units disposed under the same rotating track 32 are respectively located on both sides of the rotation axis of the rotating bracket 3, and are respectively supported by one support base 6.
  • the support base 6 can be fixed to a mounting base such as the ground.
  • the rotation driving unit is disposed under the rotating bracket 3, so that the rotary driving unit can also support the rotating bracket 3 and the scanning unit located on the rotating bracket 3 while driving the rotating bracket 3, because it is unnecessary Additional special support structure is provided, so the structure is simple and stable.
  • Two rotary drive units on both sides of the rotation axis are disposed below the same rotation track 32, so that the two rotation drive units can more stably support the portion of the rotary bracket 3 corresponding to the corresponding rotation track 32, and the two The rotary drive unit can act on the rotating rail 32 more efficiently and stably, and drive the rotary bracket 3 to rotate more efficiently and stably.
  • the four rotating driving units are arranged to cooperate with the two rotating rails 32 to drive the rotating bracket 3, on the one hand, it is convenient to provide a larger rotational driving force, and the rotational driving efficiency is improved; on the other hand, each rotary driving unit can also be reduced.
  • the load subjected to the load reduces the strength requirement for each rotary drive unit, reduces the wear on each rotary drive unit; on the other hand, it also helps to improve the rotational stability of the entire rotary support 3; Multi-point drive synchronization adaptive.
  • the structures of the four rotary driving units all adopt the same structure. Based on this, the following description will be made by taking only one of the rotary drive units as an example to simplify the description.
  • the rotary drive unit of this embodiment includes a support beam 5, two wheel drive structures, and two motors 7, wherein the middle portion of the support beam 5 is pivotally coupled to the support base 6 such that the support beam 5 Swingably disposed under the rotating bracket 3; two wheel drive mechanisms are disposed between the support beam 5 and the rotating rail 32 and at both ends of the supporting beam 5, so that the two wheel driving mechanisms are located at the swing center a of the supporting beam 5
  • the two motors 7 are respectively disposed at two ends of the support beam 5 corresponding to the two wheel drive mechanisms as power devices for powering the two wheel drive mechanisms.
  • each of the wheel drive mechanisms includes a drive wheel 4, and the drive wheel 4 is a friction wheel that drives the rotary bracket 3 and is disposed on the rotary bracket by applying a frictional force to the rotary track 32 when rotated.
  • the scanning unit on the 3 is rotated, that is, the wheel drive mechanism of this embodiment adopts a friction drive mode instead of a gear mesh drive mode to realize the rotation of the rotary bracket 3.
  • Two driving wheels 4 are disposed on each of the supporting beams 5, and only one driving wheel 4 is disposed on each of the supporting beams 5, which can provide a larger friction driving force for the rotation of the rotating bracket 3, thereby achieving more efficient
  • the pressure of the rotating bracket 3 can be dispersed, the load on the single driving wheel 4 can be reduced, the wear of the driving wheel 4 can be reduced, the service life can be prolonged, the reliability of use can be increased, and the maintenance and replacement cost can be reduced.
  • the support beam 5 is swingably disposed such that the two drive wheels 4 on both sides of its swing center can be more stably in contact with the rotary track 32, preventing one of the contacts while the other is not in contact, causing insufficient drive and rotating the bracket 3. Problems such as bumps occur, and the rotation stability is improved.
  • the support beam 5 can also automatically distribute the pressure to the other by the swing, so that the two drives on both sides The wheel 4 can bear the pressure more evenly. This aspect can prevent the single drive wheel 4 from being worn and damaged due to excessive pressure. On the other hand, it can disperse the driving force and the braking force, and improve the driving reliability and the rotation stability.
  • a motor 7 for each wheel drive mechanism not only facilitates the arrangement of the power unit, but also enables the CT inspection system to have a multi-point power source to form a multi-point drive, which is advantageous for increasing the driving force and is also advantageous. A reduction in the structural size and dynamic parameters of the motor 7 is achieved.
  • the CT inspection system further includes a positioning structure 8 for positioning the rotating bracket 3 in the direction of the rotation axis of the rotating bracket 3, that is, the positioning structure 8 Used for axial positioning of the rotating bracket 3.
  • a positioning structure 8 for example, a fastener such as a bolt
  • the axial movement of the rotating bracket 3 can be effectively limited, which is beneficial to improving the structural stability and rotational stability of the rotating bracket 3, and also reduces the processing precision requirement for the axial distance of the rotating bracket 3, and saves processing costs. .
  • the CT inspection system of this embodiment has a simple structure, and the radiation source device 1 and the detection device 2 have better rotation synchronization and rotation stability, and can generate a more stable and accurate image, and is convenient for obtaining large goods. And more accurate inspection results of large objects such as vehicles.
  • CT inspection system based on the CT inspection system of this embodiment performs CT scan inspection
  • various customization and matching options can be used to implement various usage scenarios that meet different inspection requirements of the customer:
  • the CT inspection system of this embodiment has the characteristics of being flexible and convenient to use, and can meet more kinds of inspection requirements.

Abstract

一种CT检查系统，包括旋转支架(3)、扫描单元和旋转驱动装置，旋转驱动装置的旋转驱动单元包括支撑梁(5)和两个具有驱动轮(4)的轮驱动机构，支撑梁(5)可摆动地设置，两个轮驱动机构设置在支撑梁(5)上并位于支撑梁(5)摆动中心的两侧，驱动轮(4)转动时通过带动旋转支架(3)转动而使扫描单元转动。可摆动的支撑梁(5)能够在位于其摆动中心两侧的两个轮驱动机构中的一个所受载荷较大时通过摆动将载荷自动向另一个分配，使得各轮驱动机构能够较为均衡地承担压力，因此，能够实现旋转支架(3)更稳定的转动过程，从而有效提高被旋转支架(3)带动转动的放射源装置(1)和探测装置(2)的旋转稳定性。

Description

CT检查系统
相关申请的交叉引用
本公开是以申请号为201810437001.0，申请日为2018年5月9日的中国申请为基础，并主张其优先权，该中国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CT检测技术领域，特别涉及一种CT检查系统。
背景技术
除了被应用于医疗领域，CT检查系统还被广泛应用于物品检测等技术领域，且不仅能够检测行包及航空箱等较小物品，还能够检测集装箱和车辆等较大物品。工作时，CT检查系统利用其产生高能X射线的放射源和能接收穿过待检物X射线的探测装置对待检物进行扫描，根据X射线强度变化，来反映待检物密度分布变化，并将射线强度变化转换成图像灰度，获得待检物的透视图像。
现有的CT检查系统，其放射源装置和探测装置通常可同步转动地设置，并在转动过程中对待检物进行扫描。然而，现有的CT检查系统，其放射源装置和探测装置的旋转稳定性较差，不仅影响CT检查系统各结构部件的使用寿命，同时还影响图像质量。
发明内容
本公开所要解决的一个技术问题是：提高CT检查系统的放射源装置和探测装置的旋转稳定性。
为了解决上述技术问题，本公开提供了一种CT检查系统，其包括：
旋转支架；
扫描单元，设置在旋转支架上并包括放射源装置及对应布置的探测装置；和
旋转驱动装置，包括旋转驱动单元，旋转驱动单元包括支撑梁和两个具有驱动轮的轮驱动机构，支撑梁可摆动地设置，两个轮驱动机构设置在支撑梁上并位于支撑梁摆动中心的两侧，驱动轮转动时通过带动旋转支架转动而使扫描单元转动。
在一些实施例中，驱动轮为摩擦轮，驱动轮通过在转动时对旋转支架施加摩擦力 而使旋转支架转动。
在一些实施例中，旋转支架包括支架本体和旋转轨道，旋转轨道设置在支架本体上，至少一个旋转驱动单元与旋转轨道对应设置，且驱动轮通过在转动时对旋转轨道施加摩擦力而使旋转支架转动。
在一些实施例中，两个旋转驱动单元设置在旋转轨道下方并位于旋转支架转动轴线的两侧。
在一些实施例中，CT检查系统包括两个旋转轨道，两个旋转轨道沿着旋转支架的转动轴线依次间隔设置。
在一些实施例中，驱动轮为齿轮，旋转支架上设有与驱动轮啮合的齿圈，在驱动轮与齿圈的配合作用下，驱动轮转动时能够带动旋转支架转动。
在一些实施例中，旋转驱动单元还包括动力装置，动力装置与两个轮驱动机构驱动连接并用于驱动两个轮驱动机构的驱动轮转动。
在一些实施例中，CT检查系统还包括定位结构，定位结构用于对旋转支架在旋转支架的转动轴线方向上进行定位。
在一些实施例中，探测装置呈以放射源装置为中心的弧形。
在一些实施例中，CT检查系统包括两个扫描单元，两个扫描单元彼此间隔地设置在旋转支架上。
在本公开中，可摆动的支撑梁能够在位于其摆动中心两侧的两个轮驱动机构中的一个所受载荷较大时通过摆动将载荷自动向另一个分配，使得各轮驱动机构能够较为均衡地承担压力，因此，能够实现旋转支架更稳定的转动过程，从而有效提高被旋转支架带动转动的放射源装置和探测装置的旋转稳定性。
通过以下参照附图对本公开的示例性实施例进行详细描述，本公开的其它特征及其优点将会变得清楚。
附图说明
为了更清楚地说明本公开实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1示出本公开一实施例的CT检查装置的主视结构示意图。
图2示图1的侧视结构示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。以下对至少一个示例性实施例的描述实际上仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。基于本公开中的实施例，本领域普通技术人员在没有开展创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为授权说明书的一部分。
在本公开的描述中，需要理解的是，方位词如“前、后、上、下、左、右”、“横向、竖向、垂直、水平”和“顶、底”等所指示的方位或位置关系通常是基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，在未作相反说明的情况下，这些方位词并不指示和暗示所指的装置或元件必须具有特定的方位或者以特定的方位构造和操作，因此不能理解为对本公开保护范围的限制；方位词“内、外”是指相对于各部件本身的轮廓的内外。
在本公开的描述中，需要理解的是，使用“第一”、“第二”等词语来限定零部件，仅仅是为了便于对相应零部件进行区别，如没有另行声明，上述词语并没有特殊含义，因此不能理解为对本公开保护范围的限制。
图1-2示出了本公开CT检查系统的一个实施例。参照图1-2，本公开所提供的CT检查系统，包括：
旋转支架3；
扫描单元，设置在旋转支架3上并包括放射源装置1及对应布置的探测装置2；和
旋转驱动装置，包括旋转驱动单元，旋转驱动单元包括支撑梁5和两个具有驱动轮4的轮驱动机构，支撑梁5可摆动地设置，两个轮驱动机构设置在支撑梁5上并位于支撑梁5摆动中心的两侧，驱动轮4转动时通过带动旋转支架3转动而使扫描单元转动。
本公开将放射源装置1和探测装置2设置为由同一旋转支架3带动转动，旋转同步性更容易保证，并且，本公开利用位于可摆动支撑梁5摆动中心两侧的两个轮驱动 机构来驱动旋转支架3转动，由于支撑梁5可以在一个轮驱动机构所受载荷较大时通过摆动将载荷自动向另一个轮驱动机构分配，使得各轮驱动机构能够较为均衡地承担载荷，因此，能够使旋转支架3更稳定地转动，有效提高放射源装置1和探测装置2的旋转稳定性，这有利于改善CT检查系统的图像质量，提升检测准确性，也有利于延长CT检查系统各结构部件的使用寿命。
在本公开中，轮驱动机构的驱动轮4可以为齿轮，这种情况下，可以在旋转支架3上设置用于与驱动轮4啮合的齿圈，使得在驱动轮4与齿圈的配合作用下，能够实现旋转支架3和扫描单元的转动；或者，轮驱动机构的驱动轮4也可以不采用齿轮，而采用摩擦轮，这种情况下，驱动轮4可以通过在转动时对旋转支架3施加摩擦力而使旋转支架3转动，实现摩擦驱动过程。其中，相对于驱动轮4为齿轮的情况，驱动轮4为摩擦轮时，可以实现旋转支架3和扫描单元的旋转自适应软启动，有效防止齿轮传动时因启动力矩过大而磨损破坏。
本公开的旋转支架3，可以包括支架本体31，该支架本体31可以设置为圆环形，一方面更便于扫描单元的放射源装置1和探测装置2的相对布置，另一方面也更便于旋转控制。当驱动轮4如前所述设置为摩擦轮时，驱动轮4可以直接与支架本体31接触，通过在转动时直接对支架本体31施加摩擦力，来使旋转支架3转动；或者，也可以在支架本体31上进一步设置旋转轨道32，使驱动轮4不再直接与支架本体31接触，而是与旋转轨道32接触，通过在转动时对旋转轨道32施加摩擦力，来使旋转支架3转动。通过设置旋转轨道32，可以减少对支架本体31的磨损。旋转轨道32可以采用经过热处理的特殊材料制成，以提高其强度、硬度及耐磨性。
在本公开中，旋转轨道32的数量可以为一个，也可以为两个或多个。其中，当旋转轨道32为两个时，这两个旋转轨道32可以沿着旋转支架31的转动轴线依次间隔设置，形成双轨道支撑结构，使得能够基于较为简单的结构，实现对支架本体31更稳定的支撑，且便于使CT检查系统的旋转部分的重心位于两个旋转轨道32之间，增强运行稳定性。可见，设置双轨道支撑结构，可以基于较为简单的结构进一步提高CT检查系统的旋转稳定性，便于获得更稳定清晰的图像。
另外，对应每个旋转轨道32，旋转驱动单元的数量可以为一个、两个或多个。例如，对应每个旋转轨道32，旋转驱动单元的数量为两个，且这两个旋转驱动单元设置在旋转轨道32下方，并使两个旋转驱动单元位于旋转支架3转动轴线的两侧，这样，不仅旋转驱动装置能够更平稳地驱动旋转支架3转动，而且旋转驱动单元还能够对旋 转支架3起到稳定的支撑作用，增强CT检查系统的结构稳定性。
下面结合图1-2所示的实施例对本公开予以进一步地说明。
如图1-2所示，在该实施例中，CT检查系统包括扫描单元、旋转支架3和旋转驱动装置，扫描单元设置在旋转支架3上，并在旋转驱动装置的驱动作用下，随旋转支架3一起转动。
其中，旋转支架3用于为扫描单元提供安装基体，并用于带动扫描单元转动，以实现对待检物的转动扫描。由图1和图2可知，该实施例的旋转支架3包括支架本体31和两个旋转轨道32。支架本体31呈圆环状，其中心轴线形成旋转支架3的转动轴线，且其内部空间形成待检物的通过通道。而两个旋转轨道32则固定于支架本体31的外表面，相应地也呈圆环型，并沿着支架本体31的中心轴线依次间隔布置，也即沿着旋转支架3的转动轴线依次间隔布置。基于此，旋转支架3为双轨道结构，便于与驱动装置配合，实现更稳定的旋转过程。
扫描单元用于对待检物进行扫描，其包括放射源装置1和探测装置2。放射源装置1用于产生穿透待检物的X射线，其可以采用X光机或者加速器。探测装置2用于接收穿过待检物的X射线，并将所接收到的X射线转换为可供记录的电信号，以供CT检查系统的成像装置生成CT图像使用，其可以采用采用探测器阵列结构。
由图1可知，该实施例的CT检查系统包括两个扫描单元，且这两个扫描单元彼此间隔地设置于旋转支架3上，具体地，这两个扫描单元沿着旋转支架3的周向间隔布置，即，这两个扫描单元成角度地设置于旋转支架3上。相对于只设置一个扫描单元的情况，设置两个扫描单元的好处在于，可以一次性完成对待检物不同角度的扫描，检查过程更加高效，检查结果更加可靠。其中具体地，在图1中，该实施例的这两个扫描单元，其中一个扫描单元的放射源装置1设置在旋转支架3的顶部，另一个扫描单元的放射源装置1则设置在旋转支架3的侧部，这样便于根据实际情况对待检物进行顶部扫描和侧部扫描，获得更符合需求的全方位的扫描结果。并且，为了简化结构，在该实施例中，两个扫描单元的结构设置为相同的。因此，为了描述简便，以下仅以其中一个扫描单元为例进行说明。
如图1所示，在该实施例中，扫描单元的放射源装置1和探测装置2均设置在旋转支架3上。具体地，放射源装置1和探测装置2均设置在支架本体31上。其中，由图1可知，放射源装置1设置在支架本体31的外周上，而探测装置2则设置在支架本体31的内周上并与放射源装置1相对布置。基于此，当待检物从圆环中间穿过 时，放射源装置1可以发射X射线穿透待检物，而穿透待检物的X射线可以射至与放射源装置1相对布置的探测装置2上，进而能够形成CT图像。每次扫描时，待检物的一个切面置于通过通道中，以待扫描装置对待检物的相应切面进行扫描。每完成一个切面的扫描，待检物被CT检查系统的牵引装置牵引至下一个切面位置位于通过通道中，以便完成下一个切面的扫描。如此继续，直至完成整个待检物的扫描。其中，待检物可以为大型货物(如集装箱)、车辆或者飞机等。
并且，如图1所示，该实施例的探测装置2设置为呈以对应放射源装置1为中心的弧形。具体地，在该实施例中，探测装置2采用探测器阵列结构，多个探测器呈阵列状布置于探测臂上，而探测臂则呈以放射源装置1为中心的弧形。由于探测装置2呈以放射源装置1为中心的弧形，因此，整个探测装置2不同部位到放射源装置1之间的距离相同，即，探测器阵列中的各探测器距放射源装置1的距离相同，这种源探等距的设置方式，与源探不等距(例如探测装置2呈以旋转支架3的中心为中心的弧形)的设置方式相比，更便于成像，同时，后续的相关计算分析也更加简单方便，有利于提高检查准确性。
旋转驱动装置与旋转支架3驱动连接，并用于通过驱动旋转支架3转动来使扫描单元转动。结合图1和图2可知，在该实施例中，旋转驱动装置包括四个旋转驱动单元，这四个旋转驱动单元均设置在旋转支架3的下方，并两两与前述两个旋转轨道32对应设置，即，在该实施例中，每个旋转轨道32对应两个旋转驱动单元。并且，如图1所示，设置在同一旋转轨道32下方的两个旋转驱动单元，分别位于旋转支架3转动轴线的两侧，并分别由一个支撑座6所支撑。支撑座6可以固定于地面等安装基础上。
将旋转驱动单元设置在旋转支架3的下方，可以使得旋转驱动单元在驱动旋转支架3旋转的同时，还对旋转支架3和位于旋转支架3上的扫描单元等起到一定的支撑作用，由于无需再额外设置专门的支撑结构，因此，结构较为简单稳定。
在同一旋转轨道32下方设置位于转动轴线两侧的两个旋转驱动单元，使得这两个旋转驱动单元可以更稳定地对旋转支架3的与相应旋转轨道32对应的部位进行支撑，且这两个旋转驱动单元可以更高效稳定地作用于旋转轨道32上，驱动旋转支架3更高效稳定地转动。
而设置四个旋转驱动单元与两个旋转轨道32配合对旋转支架3进行驱动，一方面，便于提供更大的旋转驱动力，提高旋转驱动效率；另一方面，还可以减少每个旋 转驱动单元所承受的载荷，降低对每个旋转驱动单元的强度要求，减轻对每个旋转驱动单元的磨损；再一方面，也有利于提高整个旋转支架3的旋转稳定性；又一方面，还便于实现多点驱动同步性自适应。
在该实施例中，为了使旋转驱动装置的结构较为简单，四个旋转驱动单元的结构均采用相同的结构。基于此，以下仅以其中一个旋转驱动单元为例进行说明，以简化描述。
如图1和图2所示，该实施例的旋转驱动单元包括支撑梁5、两个轮驱动结构以及两个电机7，其中，支撑梁5的中部与支撑座6枢接，使得支撑梁5可摆动地设置于旋转支架3下方；两个轮驱动机构设置在支撑梁5与旋转轨道32之间并位于支撑梁5的两端，使得两个轮驱动机构位于支撑梁5摆动中心a的两侧；而两个电机7则分别与两个轮驱动机构对应地设置在支撑梁5的两端，作为动力装置，用于为两个轮驱动机构提供动力。
在该实施例中，每个轮驱动机构均包括一个驱动轮4，且该驱动轮4为摩擦轮，其通过在转动时对旋转轨道32施加摩擦力，来带动旋转支架3和设置在旋转支架3上的扫描单元转动，也即，该实施例的轮驱动机构采用摩擦驱动方式，而非齿轮啮合驱动方式，来实现旋转支架3的转动。
在每个支撑梁5上设置两个驱动轮4，相对于每个支撑梁5上只设置一个驱动轮4的情况，可以为旋转支架3的转动提供更大的摩擦驱动力，实现更高效的转动过程，同时，可以实现旋转支架3压力的分散，减少单个驱动轮4所承受的载荷，减轻驱动轮4的磨损，延长其使用寿命，增加其使用可靠性，降低维修更换成本。
并且，支撑梁5可摆动地设置，使得位于其摆动中心两侧的两个驱动轮4可以更稳定地与旋转轨道32接触，防止其中一个接触而另一个不接触时造成驱动不足及旋转支架3发生颠簸等问题，提高旋转稳定性，同时，当两个驱动轮4中的一个承受压力较大时，支撑梁5还可以通过摆动自动将压力分配至另外一个上，使得两侧的两个驱动轮4能够较为均衡地承担压力，这一方面可以防止单个驱动轮4因承受压力过大而磨损破坏，另一方面还可以分散驱动力和制动力，提高驱动可靠性和旋转稳定性。
而为每个轮驱动机构设置一个电机7，则不仅更便于动力装置的布置，并且还可以使得CT检查系统具有多点动力源，形成多点驱动，有利于增大驱动力，同时也有利于实现电机7结构尺寸和动力参数的减少。
另外，如图2所示，在该实施例中，CT检查系统还包括定位结构8，该定位结构 8用于对旋转支架3在旋转支架3的转动轴线方向上进行定位，即，定位结构8用于对旋转支架3进行轴向定位。具体地，由图2可知，在每个旋转驱动单元处，对应设有一个定位结构8(例如可以为螺栓等紧固件)。基于此，可以有效限制旋转支架3的轴向移动，既有利于提高旋转支架3的结构稳定性及旋转稳定性，也有利于降低对旋转支架3的轴向距离的加工精度要求，节约加工成本。
由以上可知，该实施例的CT检查系统，结构较为简单，且放射源装置1和探测装置2具有更好的旋转同步性及旋转稳定性，可以生成更稳定准确的图像，便于获得对大型货物及车辆等大型待检物更精确的检查结果。
在基于该实施例的CT检查系统进行CT扫描检查时，通过具体功能的定制与选配，可以施行多种满足客户不同检查需求的使用方案：
(1)成角度地安装两个扫描单元，并使旋转支架3转动，实现双视角的转动扫描检查过程；
(2)成角度地安装两个扫描单元，并使旋转支架3不转动，实现双视角的固定扫描检查过程；
(3)只安装位于旋转支架3侧部的放射源装置1及其对应的探测装置2，并使旋转支架3转动，实现侧视角的转动扫描检查过程；
(4)只安装位于旋转支架3侧部的放射源装置1及其对应的探测装置2，并使旋转支架3不转动，实现侧视角的固定扫描检查过程；
(5)只安装位于旋转支架3顶部的放射源装置1及其对应的探测装置2，并使旋转支架3转动，实现顶视角的转动扫描检查过程；
(6)只安装位于旋转支架3顶部的放射源装置1及其对应的探测装置2，并使旋转支架3不转动，实现顶视角的固定扫描检查过程。
可见，该实施例的CT检查系统，还具有使用灵活方便的特点，能够满足更多样的检查需求。
以上所述仅为本公开的示例性实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (10)

  1. 一种CT检查系统，包括：
    旋转支架(3)；
    扫描单元，设置在所述旋转支架(3)上并包括放射源装置(1)及对应布置的探测装置(2)；和
    旋转驱动装置，包括旋转驱动单元，所述旋转驱动单元包括支撑梁(5)和两个具有驱动轮(4)的轮驱动机构，所述支撑梁(5)可摆动地设置，所述两个轮驱动机构设置在所述支撑梁(5)上并位于所述支撑梁(5)摆动中心的两侧，所述驱动轮(4)转动时通过带动所述旋转支架(3)转动而使所述扫描单元转动。
  2. 根据权利要求1所述的CT检查系统，其中，所述驱动轮(4)为摩擦轮，所述驱动轮(4)通过在转动时对所述旋转支架(3)施加摩擦力而使所述旋转支架(3)转动。
  3. 根据权利要求2所述的CT检查系统，其中，所述旋转支架(3)包括支架本体(31)和旋转轨道(32)，所述旋转轨道(32)设置在所述支架本体(31)上，至少一个所述旋转驱动单元与所述旋转轨道(32)对应设置，且所述驱动轮(4)通过在转动时对所述旋转轨道(32)施加摩擦力而使所述旋转支架(3)转动。
  4. 根据权利要求3所述的CT检查系统，其中，两个所述旋转驱动单元设置在所述旋转轨道(2)下方并位于所述旋转支架(3)转动轴线的两侧。
  5. 根据权利要求3所述的CT检查系统，其中，所述CT检查系统包括两个所述旋转轨道(32)，所述两个旋转轨道(32)沿着所述旋转支架(3)的转动轴线依次间隔设置。
  6. 根据权利要求1所述的CT检查系统，其中，所述驱动轮(4)为齿轮，所述旋转支架(3)上设有与所述驱动轮(4)啮合的齿圈，在所述驱动轮(4)与所述齿圈的配合作用下，所述驱动轮(4)转动时带动所述旋转支架(3)转动。
  7. 根据权利要求1所述的CT检查系统，其中，所述旋转驱动单元还包括动力装置，所述动力装置与所述两个轮驱动机构驱动连接并用于驱动所述两个轮驱动机构的驱动轮(4)转动。
  8. 根据权利要求1所述的CT检查系统，其中，所述CT检查系统还包括定位结构(8)，所述定位结构(8)用于对所述旋转支架(3)在所述旋转支架(3)的转动 轴线方向上进行定位。
  9. 根据权利要求1所述的CT检查系统，其中，所述探测装置(2)呈以所述放射源装置(1)为中心的弧形。
  10. 根据权利要求1所述的CT检查系统，其中，所述CT检查系统包括两个所述扫描单元，所述两个扫描单元彼此间隔地设置在所述旋转支架(3)上。
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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108542413A (zh) * 2018-05-09 2018-09-18 清华大学 Ct检查系统
CN109407135A (zh) * 2018-12-05 2019-03-01 北京航星机器制造有限公司 一种ct探测器和ct类安检设备
CN109621232A (zh) * 2018-12-29 2019-04-16 佛山瑞加图医疗科技有限公司 支架系统
CN111856600B (zh) * 2020-05-29 2022-09-02 清华大学 Ct扫描设备
CN111812734B (zh) * 2020-05-29 2021-12-31 清华大学 Ct扫描设备
CN113916917A (zh) * 2021-10-20 2022-01-11 北京航星机器制造有限公司 一种基于ct技术的安检系统及其检测方法
CN116223535A (zh) * 2021-12-30 2023-06-06 同方威视技术股份有限公司 辐射检查系统
CN116773566A (zh) * 2023-06-12 2023-09-19 同方威视技术股份有限公司 检测装置及用于电芯检测的检测方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007159958A (ja) * 2005-12-16 2007-06-28 Ge Medical Systems Global Technology Co Llc 適応型心電同期画像再構成方法、適応型心電同期投影データ収集方法およびｘ線ｃｔ装置
CN102103091A (zh) * 2007-12-29 2011-06-22 清华大学 探测器装置及具有该探测器装置的ct检查系统
CN102809464A (zh) * 2011-05-31 2012-12-05 上海西门子医疗器械有限公司 动平衡测量方法及装置及装有该装置的ct机
CN202619672U (zh) * 2012-03-22 2012-12-26 株式会社东芝 架台及x射线ct装置
CN203634188U (zh) * 2013-11-14 2014-06-11 上海联影医疗科技有限公司 一种放射性医疗设备
CN104101615A (zh) * 2014-07-28 2014-10-15 重庆大学 一种车载移动式计算机层析成像检测系统
US20180070908A1 (en) * 2016-09-13 2018-03-15 Toshiba Medical Systems Corporation X-ray ct apparatus
CN108542413A (zh) * 2018-05-09 2018-09-18 清华大学 Ct检查系统

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101231254B (zh) * 2007-01-24 2010-08-11 清华大学 双源三维立体成像系统和成像方法
EP2725981B1 (en) * 2011-06-30 2017-08-09 Analogic Corporation Vibration damping for apparatus comprising rotating gantry
US9480440B2 (en) * 2011-09-28 2016-11-01 Qr Srl System and method for cone beam computed tomography
KR101254097B1 (ko) * 2011-12-08 2013-04-12 한국생산기술연구원 촬영 모듈 회전 장치 및 이를 포함한 영상 획득 장치
US10016171B2 (en) * 2014-11-12 2018-07-10 Epica International, Inc. Radiological imaging device with improved functionality
US10076294B2 (en) * 2016-03-30 2018-09-18 Morpho Detection, Llc Gantry system with support wheels
CN206515487U (zh) * 2016-12-07 2017-09-22 同方威视技术股份有限公司 螺旋ct设备
CN208926403U (zh) * 2018-05-09 2019-06-04 清华大学 Ct检查系统

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007159958A (ja) * 2005-12-16 2007-06-28 Ge Medical Systems Global Technology Co Llc 適応型心電同期画像再構成方法、適応型心電同期投影データ収集方法およびｘ線ｃｔ装置
CN102103091A (zh) * 2007-12-29 2011-06-22 清华大学 探测器装置及具有该探测器装置的ct检查系统
CN102809464A (zh) * 2011-05-31 2012-12-05 上海西门子医疗器械有限公司 动平衡测量方法及装置及装有该装置的ct机
CN202619672U (zh) * 2012-03-22 2012-12-26 株式会社东芝 架台及x射线ct装置
CN203634188U (zh) * 2013-11-14 2014-06-11 上海联影医疗科技有限公司 一种放射性医疗设备
CN104101615A (zh) * 2014-07-28 2014-10-15 重庆大学 一种车载移动式计算机层析成像检测系统
US20180070908A1 (en) * 2016-09-13 2018-03-15 Toshiba Medical Systems Corporation X-ray ct apparatus
CN108542413A (zh) * 2018-05-09 2018-09-18 清华大学 Ct检查系统

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