• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present disclosure relates to CT inspection field, in particular to a CT inspection system. The CT inspection system provided by the present disclosure includes a rotating bracket, a scanning device and a rotation driving device, a rotation driving unit of the rotation driving device includes a support beam and two wheel driving mechanisms with drive wheels, the support beam is arranged in a swingable manner, the two wheel driving mechanisms are arranged on the support beam and located at the two sides of the swing center of the support beam, and the drive wheels drive the rotating bracket to rotate so as to cause the scanning device rotate during rotation. In the present disclosure, when one of the two wheel driving mechanisms located at the two sides of the swing center of the support beam bears relatively large load, the swingable support beam automatically distributes the load to the other one by swinging, so that each wheel driving mechanism bears the pressure in a relatively balanced manner, therefore a more stable rotation process of the rotating bracket is achieved, and thus the rotation stability of the radiation source device and the detection device that are driven to rotate by the rotating bracket is effectively improved.
    公开号:DK202070814A1
    申请号:DKP202070814
    申请日:2020-12-07
    公开日:2020-12-15
    发明作者:Song Quanwei；Li Jainmin；Gao Kejin；Li Yulan；Shi Junping；He Yuan；Meng Hui；Li Yuanjing；Han Wenxue；Zong Chunguang；Zhou Hejun；Chen Zhiqiang；Zhang Li
    申请人:Univ Tsinghua；Nuctech Co Ltd；
    IPC主号:
    专利说明:

    DK 2020 70814 A1 CT inspection system CROSS-REFERENCE TO RELATED APPLICATIONS The present disclosure is based on and claims the priority of a Chinese application with an application number of 201810437001.0 and a filing date of May 9, 2018, whose entire contents are incorporated herein by reference.
    TECHNICAL FIELD The present disclosure relates to the technical field of CT inspection, in particular to a CT inspection system.
    BACKGROUND ART Except for being applied to the medical field, the CT inspection system is also widely applied to technical fields such as item detection field. Moreover, the CT inspection system not only can detect relatively small items such as luggage and flight cases, but also can detect relatively large items such as containers and vehicles. When working, the CT inspection system scans a to-be-examined object through a radiation source that emits high-energy X rays and a detection device that receives the X rays that penetrate through the to-be-detected object, reflects changes of density distribution of the to-be-detected — object according to the intensity changes of the X rays, and converts the intensity changes of the rays into image gray level to obtain a perspective image of the to-be-detected object. The radiation source device and the detection device of the existing CT inspection system are generally configured to rotate synchronously to scan the to-be-examined object. However, the radiation source device and the detection device of the existing CT inspection system are relatively poor in rotation stability, which not only affects the service life of each structural component of the CT inspection system, but also affects the image quality.
    SUMMARY OF THE INVENTION A technical problem to be solved by the present disclosure is to improve the rotation stability of the radiation source device and the detection device of the CT inspection 1
    DK 2020 70814 A1 system.
    In order to solve the abovementioned technical problem, the present disclosure provides a CT inspection system, comprising: a rotating bracket; a scanning device arranged on the rotating bracket and comprising a radiation source device and a correspondingly arranged detection device; and a rotation driving device, comprising a rotation driving unit, the rotation driving unit comprises a support beam and two wheel driving mechanisms each with a drive wheel, the support beam is arranged in a swingable manner, the two wheel driving mechanisms are arranged on the support beam and located at two sides of a swing center of the support beam respectively, and when rotating, the drive wheel causes the scanning device rotate by driving the rotating bracket to rotate.
    In some embodiments, the drive wheel is a friction wheel, and the drive wheel is configured to apply a friction force to the rotating bracket when rotating so as to drive the rotating bracket to rotate.
    In some embodiments, the rotating bracket comprises a bracket body and a rotation track, the rotation track is arranged on the bracket body, at least one rotation driving unit is arranged corresponding to the rotation track, and the drive wheel is configured to apply the friction force to the rotating track when rotating so as to drive the rotating bracket to rotate.
    In some embodiments, two rotation driving units are arranged below the rotation track and located at two sides of a rotation axis of the rotating bracket respectively.
    In some embodiments, the CT inspection system comprises two rotation tracks, and the two rotation tracks are sequentially arranged in a spaced manner along a rotation axis of the rotating bracket.
    In some embodiments, the drive wheels is a gear, the rotating bracket is provided with a gear ring engaged with the drive wheel, and with a cooperation of the drive wheel and the gear ring, the drive wheel drives the rotating bracket to rotate when rotating.
    In some embodiments, the rotation driving unit comprises a power device, the power — device is drivingly connected with the two wheel driving mechanisms so as to drive the 2
    DK 2020 70814 A1 drive wheels of the two wheel driving mechanisms to rotate.
    In some embodiments, the CT inspection system comprises a positioning structure configured to position the rotating bracket in a direction of a rotation axis of the rotating bracket.
    In some embodiments, the detection device is in an arc shape whose center is the radiation source device.
    In some embodiments, the CT inspection system comprises two scanning devices, and the two scanning devices are arranged in a spaced manner on the rotating bracket.
    In the present disclosure, when one of the two wheel driving mechanisms located at the — two sides of the swing center of the support beam receives relatively large load, the swingable support beam automatically distributes the load to the other wheel driving mechanism by swinging, so that each wheel driving mechanism bears pressure in a relatively balanced manner, therefore a more stable rotation process of the rotating bracket is achieved, and thus the rotation stability of the radiation source device and the detection device that are driven to rotate by the rotating bracket is effectively improved.
    By detailed description of the exemplary embodiments of the present disclosure through the following reference drawings, other features and advantages of the present disclosure will become clear.
    DESCRIPTION OF THE DRAWINGS In order to explain the technical schemes in the embodiments of the present disclosure or the prior art more clearly, the drawings to be used in the description of the embodiments or the prior art will be briefly introduced below; obviously, the drawings described below are only some embodiments of the present disclosure; to ordinary persons skilled in the art, — other drawings can be further obtained based on these drawings without creative labor.
    Fig.1 is a schematic diagram of a front view of a CT inspection system of an embodiment of the present disclosure.
    Fig.2 is a schematic diagram of a side view structure of Fig.1.
    DETAILED DESCRIPTION OF THE EMBODIMENTS 3
    DK 2020 70814 A1 The technical schemes in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure; and obviously, the described embodiments are only a part of the embodiments of the present disclosure rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative, and never serves as any limitation to the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by the ordinary persons skilled in the art without carrying out creative labor fall within the protection scope of the present disclosure.
    The technologies, methods, and equipment known to the ordinary persons skilled in the relevant arts may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as a part of the authorization specification.
    In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by orientation words such as “front, back, up, down, left, right”, “lateral, longitudinal, vertical, horizontal” and "top, bottom”, etc. are generally the orientation or positional relationship shown based on the drawings, which are only for the convenience of describing the present disclosure and simplifying the description; unless otherwise stated, these positional words do not indicate or imply that the pointed device or elements must have a specific orientation or be constructed and — operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the present disclosure; and the orientation words "inside and outside" refers to the inside and outside of the contour relative to each component itself.
    In the description of the present disclosure, it should be understood that the use of terms such as “first”, “second” and the like to define parts is only for the convenience of distinguishing the corresponding parts; unless otherwise stated, the abovementioned terms have no special meanings; and therefore, it cannot be understood as a limitation on the protection scope of the present disclosure.
    Figs.1-2 illustrate one embodiment of the CT examination of the present disclosure. Referring to Figs.1-2, the CT inspection system provided by the present disclosure comprises: 4
    DK 2020 70814 A1 a rotating bracket 3; a scanning device arranged on the rotating bracket 3 and including a radiation source device 1 and a correspondingly arranged detection device 2; and a rotation driving device that includes a rotation driving unit, the rotation driving unit comprises a support beam 5 and two wheel driving mechanisms each with a drive wheel 4, the support beam 5 is arranged in a swingable manner, the two wheel driving mechanisms are arranged on the support beam 5 and located at two sides of a swing center of the support beam 5 respectively, and when rotating, the drive wheel 4 causes the scanning device rotate by driving the rotating bracket 3 to rotate.
    In the present disclosure, the radiation source device I and the detection device 2 are configured to be driven to rotate by the same rotating bracket 3, such that the rotation synchronization is ensured more easily; in addition, two wheel driving mechanisms located at the two sides of the swing center of the swingable support beam 5 are used to drive the rotating bracket 3 to rotate, in this way, the support beam 5S can automatically distribute load to the other wheel driving mechanism by swinging when one wheel driving mechanism bears relatively large load, enabling each wheel driving mechanism to bear load in a relatively balanced manner, therefore, the rotating bracket 3 can rotate more stably, and the rotation stability of the radiation source device 1 and the detection device 2 is effectively improved, which is beneficial to improve the image quality of the CT inspection system and improve the detection accuracy, and is also beneficial to prolong the service life of each structural component of the CT inspection system.
    In the present disclosure, the drive wheel 4 of the wheel driving mechanism may be a gear, in this case, a gear ring engaged with the drive wheel 4 may be arranged on the rotating bracket 3, so that the rotating bracket 3 and the scanning device can be driven to rotate under the cooperation of the drive wheel 4 and the gear ring; or, the drive wheel 4 of the wheel driving mechanism may not a gear, but a friction wheel, in this case, the drive wheel 4 causes the rotating bracket 3 rotate by applying a friction force to the rotating bracket 3 when rotating, thereby achieving a friction driving process. Wherein, compared to the case that the drive wheels 4 are gears, when the drive wheels 4 are friction wheels, an adaptive soft start of the rotation of the rotating bracket 3 and the scanning device is 5
    DK 2020 70814 A1 realized, which effectively prevents wear and damage caused by overlarge starting torque during gear transmission.
    The rotating bracket 3 of the present disclosure may include a bracket body 31 in a circular ring shape, which on the one hand, facilitates a relative arrangement of the radiation source device 1 and the detection device 2 of the scanning device, and on the other hand facilitates a rotation. When the drive wheel 4 is configured as the foregoing friction wheel, the drive wheel 4 may make direct contact with the bracket body 31, and directly apply the friction force to the bracket body 31 during rotation to rotate the rotating bracket 3; or a rotation track 32 may be further provided on the bracket body 31, and the drive wheel 4 no longer makes direct contact with the bracket body 31, but makes contact with the rotation track 32 instead, such that the drive wheel 4 drives the rotating bracket 3 to rotate by applying the friction force to the rotating rail 32 during rotation. By arranging the rotation track 32, wear to the bracket body 31 is reduced. The rotation track 32 may be made from a special thermally-treated material to improve a strength, hardness and wear resistance of The rotation track 32.
    In the present disclosure, there may be one, two or more rotation tracks 32. Wherein, when there are two rotation tracks 32, the two rotation tracks 32 may be sequentially arranged in a spaced manner along the rotation axis of the rotating bracket 31 to form a dual-track supporting structure, such that the bracket body 31 is supported more stably based on a more simple structure, and the gravity center of the rotating part of the CT inspection system is conveniently located between the two rotation tracks 32 which improves the running stability. It can be seen that by arranging the dual-track supporting structure, the rotation stability of the CT inspection system is further improved based on a relatively simple structure, and more stable and clearer images can be conveniently obtained.
    In addition, corresponding to each rotation track 32, there may be one, two or more rotation driving units. For example, in some embodies, corresponding to each rotation track 32, there are two rotation driving units, and the two rotation driving units are arranged below the rotation track 32 and located at the two sides of the rotation axis of the rotating bracket 3, thus, the rotation driving device drives the rotating bracket 3 to rotate 6
    DK 2020 70814 A1 more stably, and the rotation driving unit stably supports the rotating bracket 3, thereby improving the structural stability of the CT inspection system.
    The present disclosure will be further described below in conjunction with the embodiments shown in Figs.1-2.
    As shown in Figs.1-2, in this embodiment, the CT inspection system includes a scanning device, a rotating bracket 3 and a rotation driving device, and the scanning device is arranged on the rotating bracket 3 and rotates with the rotating bracket 3 under the driving action of the rotation driving device.
    wherein, the rotating bracket 3 is configured to provide a mounting base for the — scanning device and is also configured to drive the scanning device to rotate so as to realize a rotary scanning for the to-be-detected object. As can be seen from Fig.1 and Fig.2, the rotating bracket 3 of this embodiment comprises a bracket body 31 and two rotation tracks
    32. The bracket body 31 is in a circular ring shape, whose central axis forms the rotation axis of the rotating bracket 3, and the internal space forms a passing channel for the to-be-detected object. The two rotation tracks 32 each with a circular ring shape are fixed to the outer surface of the bracket body 31, and are sequentially arranged in a spaced manner along the central axis of the bracket body 31, i.e. sequentially arranged in a spaced manner along the rotation axis of the rotating bracket 3. Based on this, the rotating bracket 3 is of a dual-track structure capable of conveniently cooperating with the driving device to — realize a more stable rotation process.
    The scanning device is configured to scan the to-be-detected object and comprises a radiation source device I and a detection device 2. The radiation source device 1 is configured to generate X rays that penetrate through the to-be-detected object, and the radiation source device I may be an X-ray machine or an accelerator. The detection device —2is configured to receive the X rays that penetrate through the to-be-detected object and transform the received X rays into recordable electrical signals for an imaging device of the CT inspection system to generate CT images. The detection device 2 may adopt a detector array structure.
    It can be seen from Fig.1 that, the CT inspection system of this embodiment comprises two scanning devices, and the two scanning devices are sequentially arranged in a spaced 7
    DK 2020 70814 A1 manner on the rotating bracket 3. Specifically, the two scanning devices are arranged in a spaced manner along the circumferential direction of the rotating bracket 3, i.e. the two scanning devices are angularly arranged on the rotating bracket 3. Compared to the case that only one scanning device is provided, the advantages of arranging two scanning devices are that different-angle scanning of the to-be-detected object can be completed at a time, the inspection process is more efficient, and the inspection result is more reliable. More specifically, in Fig.1, the radiation source device 1 of one of the two scanning units in this embodiment is arranged at the top of the rotating bracket 3, and the radiation source device 1 of the other scanning device is arranged at the side of the rotating bracket 3, so — that the to-be-detected object can be conveniently subjected to top scanning and side scanning according to actual situations, thereby all-direction scanning results that better meet the demands being obtained. Furthermore, in order to simplify the structure, in this embodiment, the structures of the two scanning devices are set to be the same. Therefore, for simplicity of the description, only one of the scanning devices is described below as an example.
    As shown in Fig.1, in this embodiment, the radiation source device 1 and the detection device 2 of the scanning device are both arranged on the rotating bracket 3. Specifically, the radiation source device 1 and the detection device 2 are both arranged on the bracket body 31. It can be seen from Fig.1 that the radiation source device 1 is arranged on the — outer circumference of the bracket body 31, and the detection device 2 is arranged on the inner circumference of the bracket body 31 and is arranged opposite to the radiation source device 1. Based on this, when the to-be-detected object passes through the center of the ring, the radiation source device 1 emits X rays to penetrate through the to-be-detected object, and the X rays that penetrate through the to-be-detected object falls on the detection device 2 arranged opposite to the radiation source device I to form CT images. During each scanning, a section surface of the to-be-detected object is placed in the passing channel, so that the corresponding section surface of the to-be-detected object can be scanned by the scanning device. Each time the scanning of one section surface is completed, the to-be-detected object is dragged by a traction device of the CT inspection system to a place where a next section surface is located in the passing channel so as to complete the 8
    DK 2020 70814 A1 scanning of the next section surface. Continue like this until the scanning of the entire to-be-detected object is completed. Wherein, the to-be-detected object may be a large cargo (such as a container), a vehicle, or an airplane.
    In addition, as shown in Fig.1, the detection device 2 of this embodiment is arranged in an arc shape that takes the corresponding radiation source device 1 as the center. Specifically, in this embodiment, the detection device 2 adopts a detector array structure, and a plurality of detectors are arranged in an array on a detection arm which is in an arc shape that takes the radiation source device 1 as the center. As the detection device 2 is in an arc shape that takes the radiation source device 1 as the center, the distance from — different portions of the entire detection device 2 to the radiation source device 1 is the same, that is, the distance from each detector in the detector array to the radiation source device 1 is the same. Compared with an unequal-distance arrangement way (for example, the detection device 2 is in an arc shape that takes the rotating bracket 3 as the center) of the radiation source device and the detector, the equal-distance arrangement way of the radiation source device and the detector can realize more convenient imaging, and at the same time, the subsequent related calculation and analysis are also simpler and more convenient, which is beneficial to improve the accuracy of inspection. The rotation driving device is drivingly connected with the rotating bracket 3 and is configured to drive the rotating bracket 3 to rotate to cause the scanning devices rotate. It can be seen in conjunction with Fig.1 and Fig.2 that, in this embodiment, the rotation driving device comprises four rotation driving units, the four rotation driving units are all arranged below the rotating bracket 3 and are arranged corresponding to the aforementioned two rotation tracks 32 in pairs, that is, in this embodiment, each rotation track 32 corresponds to two rotation driving units. Moreover, as shown in Fig.1, the two — rotation driving units arranged below the same rotation track 32 are respectively located at the two sides of the rotation axis of the rotating bracket 3 and are each supported by a supporting base 6. The supporting base 6 may be fixed to an installation foundation such as the ground. The rotation driving units are arranged below the rotating bracket 3, so that the — rotation driving units apply a certain support effect on the rotating bracket 3 and the 9
    DK 2020 70814 A1 scanning devices located on the rotating bracket 3 while driving the rotating bracket 3 to rotate. As there is no need to additionally arrange a special support structure, the structure is relatively simple and stable.
    The two rotation driving units located at the two sides of the rotation axis are arranged below the same rotation track 32, so that the two rotation driving units support the part of the rotating bracket 3 corresponding to the corresponding rotation track 32 more stably, and these two rotation driving units acts on the rotation track 32 more efficiently and stably, thereby driving the rotating bracket 3 to rotate more efficiently and stably.
    Four rotation driving units are arranged to cooperate with the two rotation tracks 32 to drive the rotating bracket 3, thus on the one hand, greater rotation drive force is conveniently provided to improve the rotation drive efficiency; on the other hand, the load born by each rotation driving unit is reduced, which reduces the strength requirement on each rotation driving unit, and alleviates the wear of each rotation driving unit; on another hand, it also helps to improve the rotation stability of the overall rotating bracket 3; and on a further hand, multi-point drive synchronization adaptivity is conveniently achieved.
    In the embodiment, in order to make the structure of the rotation driving device be simpler, the four rotation driving units all adopt the same structure. Based on this, only one of the rotation driving units is used as an example hereinafter for description in order to simplify the description.
    As shown in Fig.1 and Fig.2, the rotation driving unit of this embodiment comprise a support beam 5, two wheel driving mechanisms, and two motors 7, wherein the middle part of the support beam 5 is pivotally connected with the supporting base 6, so that the support beam 5 is arranged in a swingable manner below the rotating bracket 3; the two wheel — driving mechanisms are arranged between the support beam 5 and the rotation tracks 32 and are located at the two sides of the support beam 5, so that the two wheel driving mechanisms are located at the two sides of the swing center a of the support beam 5; and the two motors 7 are respectively arranged at the two ends of the support beam 5 in a manner of corresponding to the two wheel driving mechanisms, as power devices configured to provide power for the two wheel driving mechanisms.
    10
    DK 2020 70814 A1 In this embodiment, each wheel driving mechanism comprises a drive wheel 4, and the drive wheel 4 is a friction wheel which applies friction force to the rotation track 32 during rotation so as to drive the rotating bracket 3 and the scanning devices arranged on the rotating bracket 3 to rotate, namely, the wheel driving mechanism of this embodiment adopts a friction drive mode instead of a gear engagement drive mode to realize the rotation of the rotating bracket 3.
    Each support beam 5 is provided with two drive wheels 4, thus compared to the case that each support beam 5 is provided with only one drive wheel 4, a larger friction drive force can be provided for the rotation of the rotating bracket 3 to realize a more efficient — rotation process, meanwhile dispersion of pressure of the rotating bracket 3 can be realized to reduce the load born by a single drive wheel 4and the wear of the drive wheel 4, such that the service life of the drive wheel 4 is prolonged, the use reliability of the drive wheel 4 is improved, and the maintenance and replacement cost is reduced.
    Furthermore, the support beam S is arranged in a swingable manner, so that the two drive wheels 4 located at the two sides of the swing center of the support beam 5 make more stable contact with the rotation track 32, and problems such as insufficient driving and jolt of the rotating bracket 3 caused by the case that one of the drive wheels 4 is in contact with the rotation track 32 and the other one is not in contact with the rotation track 32 are prevented, thereby improving the rotation stability; meanwhile, when one of the two — drive wheels 4 bear relatively large pressure, the support beam 5 can automatically distribute the pressure to the other one by swinging, so that the two drive wheels 4 at the two sides bears the pressure in a relatively balanced manner, which prevents a single drive wheel 4 from being worn and damaged due to excessive pressure, and disperses the driving force and braking force, thereby improving the driving reliability and the rotation stability.
    The arrangement of one motor 7 for each wheel driving mechanism not only facilitates the arrangement of the power device, but also enables the CT inspection system to have a multi-point power source, thus forming a multi-point driving which is beneficial to increase the driving force and is simultaneously beneficial to reduce the size and power parameters of the motor 7.
    In addition, as shown in Fig.2, in this embodiment, the CT inspection system includes 11
    DK 2020 70814 A1 a positioning structure 8, and the positioning structure 8 is configured to position the rotating bracket 3 in the direction of the rotation axis of the rotating bracket 3, that is, the positioning structure 8 is configured to axially position the rotating bracket 3. Specifically, as can be seen from Fig.2, one positioning structure 8 (for example, it may be a fastener such as a bolt) is correspondingly arranged at each rotation driving unit. Based on this, the axial movement of the rotating bracket 3 is effectively restricted, which helps to improve the structural stability and rotation stability of the rotating bracket 3, and also helps to reduce the processing accuracy requirements on the axial distance of the rotating bracket 3, and lowers the processing cost.
    It can be seen from the above that the CT inspection system of this embodiment has a relatively simple structure, the radiation source device 1 and the detection device 2 have better rotation synchronicity and rotation stability, more stable and accurate images can be generated, and more accurate inspection results for large to-be-examined objects such as large cargoes, vehicles and the like can be obtained.
    When the CT inspection system based on this embodiment performs CT scanning inspection, by customization and selection of specific functions, a plurality of usage schemes that meet different inspection needs of customers can be implemented: (1) a dual-view-angle rotary scanning inspection process is realized by installing two scanning units angularly, and rotating the rotating bracket 3; (2) a dual-view-angle fixed scanning inspection process is realized by installing two scanning devices angularly, and preventing the rotating bracket 3 from rotating; (3) a lateral-view-angle rotary scanning inspection process is realized by only installing the radiation source device 1 and the detection device 2 corresponding to the radiation source device 1 at the side part of the rotating bracket 3, and rotating the rotating bracket 3; (4) a lateral-view-angle fixed scanning inspection process is realized by only installing the radiation source device 1 and the detection device 2 corresponding to the radiation source device 1 at the side part of the rotating bracket 3, and preventing the rotating bracket 3 from rotating; (5) a top-view-angle rotary scanning inspection process is realized by only installing 12
    DK 2020 70814 A1 the radiation source device 1 and a detection device 2 corresponding to the radiation source device 1 at the top of the rotating bracket 3, and rotating the rotating bracket 3; (6) a top-view-angle fixed scanning inspection process is realized by only installing the radiation source device 1 and a detection device 2 corresponding to the radiation source device 1 at the top of the rotating bracket 3, and preventing the rotating bracket 3 from rotating, It can be seen that the CT inspection system of this embodiment also has the characteristics of being flexible and convenient to use, and can meet various inspection requirements.
    The above are only exemplary embodiments of the present disclosure and are not intended to limit the present disclosure; any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.
    13
    权利要求:
    Claims (10)
    [1] 1. A CT inspection system, comprising: a rotating bracket (3); a scanning device arranged on the rotating bracket (3) and comprising a radiation source device (1) and a correspondingly arranged detection device (2); and a rotation driving device, comprising a rotation driving unit, the rotation driving unit comprises a support beam (5) and two wheel driving mechanisms each with a drive wheel (4), the support beam (5) is arranged in a swingable manner, the two wheel driving mechanisms are arranged on the support beam (5) and located at two sides of a swing center of the support beam (5) respectively, and when rotating, the drive wheel (4) causes the scanning device rotate by driving the rotating bracket (3) to rotate.
    [2] 2. The CT inspection system according to claim 1, wherein the drive wheel (4) is a friction wheel, and the drive wheel (4) is configured to apply a friction force to the rotating bracket (3) when rotating so as to drive the rotating bracket (3) to rotate.
    [3] 3. The CT inspection system according to claim 2, wherein the rotating bracket (3) comprises a bracket body (31) and a rotation track (32), the rotation track (32) is arranged on the bracket body (31), at least one rotation driving unit is arranged corresponding to the rotation track (32), and the drive wheel (4) is configured to apply the friction force to the rotating track (32) when rotating so as to drive the rotating bracket (3) to rotate.
    [4] 4. The CT inspection system according to claim 3, wherein two rotation driving units are arranged below the rotation track (32) and located at two sides of a rotation axis of the rotating bracket (3) respectively.
    [5] S. The CT inspection system according to claim 3, comprising two rotation tracks (32) sequentially arranged in a spaced manner along a rotation axis of the rotating bracket (3).
    [6] 6. The CT inspection system according to claim 1, wherein the drive wheels (4) is a gear, the rotating bracket (3) is provided with a gear ring engaged with the drive wheel (4), and with a cooperation of the drive wheel (4) and the gear ring, the drive wheel (4) drives the rotating bracket (3) to rotate when rotating.
    [7] 7. The CT inspection system according to claim 1, wherein the rotation driving unit 14
    DK 2020 70814 A1 comprises a power device, the power device is drivingly connected with the two wheel driving mechanisms so as to drive the drive wheels (4) of the two wheel driving mechanisms to rotate.
    [8] 8. The CT inspection system according to claim 1, comprising a positioning structure (8) configured to position the rotating bracket (3) in a direction of a rotation axis of the rotating bracket (3).
    [9] 9. The CT inspection system according to claim 1, wherein the detection device (2) is in an arc shape whose center is the radiation source device (1).
    [10] 10. The CT inspection system according to claim 1, comprising two scanning devices arranged on the rotating bracket (3) in a spaced manner.
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    同族专利:
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    CN108542413A|2018-05-09|2018-09-18|清华大学|CT examination system|CN108542413A|2018-05-09|2018-09-18|清华大学|CT examination system|
    CN109407135A|2018-12-05|2019-03-01|北京航星机器制造有限公司|A kind of CT detector and CT class rays safety detection apparatus|
    CN111812734B|2020-05-29|2021-12-31|清华大学|CT scanning device|
    法律状态:
    2020-12-15| PAT| Application published|Effective date: 20201207 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201810437001.0A|CN108542413A|2018-05-09|2018-05-09|CT examination system|
    PCT/CN2019/076610|WO2019214325A1|2018-05-09|2019-03-01|Ct inspection system|
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