阅读说明：本技术 用于ct检测装置的锁定组件和ct检测装置 (Locking assembly for CT detection device and CT detection device ) 是由 张丽 洪明志 王子楠 黄清萍 张立国 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种CT检测装置和用于CT检测装置的锁定组件。该CT检测装置包括：CT成像系统,包括辐射源、探测器和旋转框架,所述辐射源和探测器安装在所述旋转框架上,所述旋转框架的周边上设置有至少一个第一孔；支撑架,所述旋转框架通过滑环轴承固定在所述支撑架上,所述支撑架的周边上设置有与至少一个所述第一孔对准的至少一个第二孔；第一套筒,以可拆卸的方式接合在对准的所述第一孔和第二孔内,所述第一套筒包括第一配合部,所述第一配合部与第一锁定部配合以在更换所述滑环轴承时锁定所述旋转框架。(The invention discloses a CT detection device and a locking assembly for the same. The CT detection device includes: the CT imaging system comprises a radiation source, a detector and a rotating frame, wherein the radiation source and the detector are installed on the rotating frame, and the periphery of the rotating frame is provided with at least one first hole; the rotating frame is fixed on the supporting frame through a sliding ring bearing, and at least one second hole aligned with the at least one first hole is formed in the periphery of the supporting frame; a first sleeve removably engaged within the aligned first and second apertures, the first sleeve including a first mating portion that mates with a first locking portion to lock the rotating frame when the slip ring bearing is replaced.)

1. A CT detection apparatus comprising:

the CT imaging system comprises a radiation source, a detector and a rotating frame, wherein the radiation source and the detector are installed on the rotating frame, and the periphery of the rotating frame is provided with at least one first hole;

the rotating frame is fixed on the supporting frame through a sliding ring bearing, and at least one second hole aligned with the at least one first hole is formed in the periphery of the supporting frame;

a first sleeve removably engaged within the aligned first and second apertures, the first sleeve including a first mating portion that mates with a first locking portion to lock the rotating frame when the slip ring bearing is replaced.

2. The CT detection apparatus of claim 1, wherein the first sleeve includes a first cylindrical portion engaged with the first bore and a second cylindrical portion engaged with the second bore,

the outer surface of the first cylindrical portion and the inner surface of the first bore are provided with threads; and/or

The outer surface of the second cylindrical portion and the inner surface of the second bore are provided with threads.

3. The CT detection apparatus of claim 2, wherein the first cylindrical portion has a diameter smaller than a diameter of the second cylindrical portion, the first and second cylindrical portions being connected by a step;

the diameter of the first hole is smaller than the diameter of the second hole.

4. The CT detection apparatus of claim 2, wherein the first mating portion is formed as threads on an inner surface of the first cylindrical portion or threads on inner surfaces of the first and second cylindrical portions, and the first locking portion is formed as a screw.

5. The CT detection apparatus of claim 1, wherein,

the at least one first aperture comprises a plurality of first apertures evenly distributed on the perimeter of the rotating frame; and

the at least one second hole includes a plurality of second holes evenly distributed on a periphery of a receiving cavity of the support frame, in which the rotating frame is installed.

6. The CT detection apparatus of claim 1, wherein the distal end surface of the first sleeve is a locating surface.

7. The CT detection device of any of claims 1-6, further comprising a second sleeve configured to detachably engage within the second bore with the first sleeve removed from the first and second bores and comprising a second mating portion, the first bore, and a second locking portion to mate to lock the rotating frame when the CT detection device is serviced.

8. The CT detection device of claim 7, wherein an outer surface of the second sleeve and an inner surface of the second bore include threads.

9. The CT detecting apparatus of claim 8, wherein the second mating portion is formed as a pin hole inside the second sleeve, and the second locking portion is formed as a pin inserted into the first hole and the pin hole inside the second sleeve.

10. The CT detection apparatus of claim 9, wherein the inner diameters of the pin bore and the first bore are substantially equal to the outer diameter of the pin.

11. The CT detection apparatus according to claim 2, wherein the first engagement portion is formed as a thread on an inner surface of the first cylindrical portion or threads on inner surfaces of the first and second cylindrical portions, and the first locking portion is formed as a pin inserted into the first hole and the first engagement portion to lock the rotating frame when the CT detection apparatus is serviced.

12. A locking assembly for a CT inspection device including a support frame and a rotating frame of a CT imaging system secured together by a slip ring bearing, the locking assembly comprising:

at least one first hole provided on the rotating frame;

at least one second aperture disposed on the support frame configured to be alignable with at least one of the first apertures;

a first sleeve removably engaged within the aligned first and second apertures, the first sleeve including a first mating portion;

a first locking portion cooperating with the first fitting portion to lock the rotating frame when the slip ring bearing is replaced.

13. The locking assembly of claim 12, wherein the first sleeve further comprises a first cylindrical portion engaged with the first bore and a second cylindrical portion engaged with the second bore,

the outer surface of the first cylindrical portion and the inner surface of the first bore are provided with threads; and/or

The outer surface of the second cylindrical portion and the inner surface of the second bore are provided with threads.

14. The locking assembly of claim 13, wherein the first cylindrical portion has a diameter that is less than a diameter of the second cylindrical portion, the first and second cylindrical portions being connected by a step;

the diameter of the first hole is smaller than the diameter of the second hole.

15. The locking assembly of claim 13, wherein the first mating portion is formed as a thread on an inner surface of the first cylindrical portion or on inner surfaces of the first and second cylindrical portions, the first locking portion is formed as a screw, and a distal end face of the first sleeve is a locating surface.

16. The locking assembly of claim 12,

the at least one first aperture comprises a plurality of the first apertures evenly distributed on the perimeter of the rotating frame; and

the at least one second hole includes a plurality of the second holes evenly distributed on the circumference of a receiving cavity of the support frame in which the rotating frame is installed.

17. The locking assembly of any one of claims 12-16, further comprising a second sleeve configured to detachably engage within a second bore with the first sleeve removed from the first and second bores and including a second mating portion, the first bore, and second locking portion cooperating to lock the rotating frame when servicing the CT detection device.

18. The locking assembly of claim 17, wherein an outer surface of the second sleeve and an inner surface of the second bore comprise threads.

19. The locking assembly of claim 17 wherein the second mating portion is formed as a pin bore inside the second sleeve and the second locking portion is formed as a pin that is inserted into the first bore and a pin bore inside the second sleeve, the pin bore and the first bore having an inner diameter that is substantially equal to an outer diameter of the pin.

20. The locking assembly of claim 13, wherein the first mating portion is formed as a thread on an inner surface of the first cylindrical portion or on inner surfaces of the first and second cylindrical portions, and the first locking portion is formed as a pin that is inserted into the first hole and the first mating portion to lock the rotating frame when the CT detection apparatus is serviced.

Technical Field

The invention relates to the technical field of detection, in particular to a locking assembly for a CT detection device and the CT detection device.

Background

In existing CT examination apparatuses, the radiation source and the detector are mounted on a rotating frame which is mounted on a support frame via a slip ring bearing and is rotatable about its central axis, thereby performing tomography. The rotating frame and components mounted thereon are collectively referred to as a CT imaging system.

The rotating frame is fixed on the support frame through a slip ring bearing and is driven to rotate through multiple motors. When the CT detection device works, the rotation motion of the CT imaging system is utilized to realize imaging. Because the CT imaging system has complex composition, larger volume, larger mass and non-coincident center of gravity and center of rotation. Therefore, when the detection device is maintained, the CT imaging system cannot stop at any angle, and an auxiliary locking device is required to be added to lock the CT imaging system, so that the detection device is conveniently maintained. In addition, when the slip ring bearing is replaced, in order to simplify the maintenance workload, after the slip ring bearing is separated from the CT imaging system, the CT imaging system needs to be maintained at the original position, so that the CT imaging system can be recovered as soon as possible after a new slip ring bearing is replaced and mounted on the support frame, and therefore a locking mechanism of the CT imaging system needs to be designed.

Disclosure of Invention

Therefore, in the present invention, it is desirable that the CT imaging system be able to stop at any angular position while the CT inspection apparatus is being serviced. Furthermore, when replacing the slip ring bearing, it is desirable to keep the CT imaging system in the original position after removing the old slip ring bearing in order to simplify the maintenance work.

Accordingly, the present invention is directed to addressing at least one of the problems set forth above.

According to an aspect of the present invention, there is provided a CT inspection apparatus comprising: the CT imaging system comprises a radiation source, a detector and a rotating frame, wherein the radiation source and the detector are installed on the rotating frame, and the periphery of the rotating frame is provided with at least one first hole; the rotating frame is fixed on the supporting frame through a sliding ring bearing, and at least one second hole aligned with the at least one first hole is formed in the periphery of the supporting frame; a first sleeve removably engaged within the aligned first and second apertures, the first sleeve including a first mating portion that mates with a first locking portion to lock the rotating frame when the slip ring bearing is replaced.

According to an exemplary embodiment of the present disclosure, the first sleeve comprises a first cylindrical portion engaged with the first bore and a second cylindrical portion engaged with the second bore, an outer surface of the first cylindrical portion and an inner surface of the first bore being provided with threads; and/or the outer surface of the second cylindrical portion and the inner surface of the second bore are provided with threads.

According to an exemplary embodiment of the present disclosure, the first cylindrical portion has a diameter smaller than a diameter of the second cylindrical portion, the first and second cylindrical portions being connected by a step; the diameter of the first hole is smaller than the diameter of the second hole.

According to an exemplary embodiment of the present disclosure, the first fitting portion is formed as a thread on an inner surface of the first cylindrical portion or threads on inner surfaces of the first and second cylindrical portions, and the first locking portion is formed as a screw.

According to an exemplary embodiment of the present disclosure, the at least one first hole comprises a plurality of first holes evenly distributed on the circumference of the rotating frame; and the at least one second hole includes a plurality of second holes uniformly distributed on the periphery of a receiving cavity of the support frame, in which the rotating frame is installed.

According to an exemplary embodiment of the present disclosure, the end face of the first sleeve is a positioning face.

According to an exemplary embodiment of the present disclosure, the CT inspection apparatus further includes a second sleeve configured to be detachably engaged in the second hole with the first sleeve removed from the first and second holes and including a second fitting portion, the first hole and a second locking portion fitting to lock the rotating frame when the CT inspection apparatus is serviced.

According to an exemplary embodiment of the present disclosure, the outer surface of the second sleeve and the inner surface of the second bore comprise threads.

According to an exemplary embodiment of the present disclosure, the second fitting portion is formed as a pin hole inside the second sleeve, and the second locking portion is formed as a pin inserted into the first hole and the pin hole inside the second sleeve.

According to an exemplary embodiment of the present disclosure, the inner diameters of the pin bore and the first bore are substantially equal to the outer diameter of the pin.

According to an exemplary embodiment of the present disclosure, the first fitting part is formed as a thread on an inner surface of the first cylindrical part or threads on inner surfaces of the first and second cylindrical parts, and the first locking part is formed as a pin inserted into the first hole and the first fitting part to lock the rotating frame when the CT detection apparatus is serviced.

According to another aspect of the present disclosure, there is provided a locking assembly for a CT inspection apparatus including a support frame and a rotating frame of a CT imaging system secured together by a slip ring bearing, the locking assembly comprising: at least one first hole provided on the rotating frame; at least one second aperture disposed on the support frame configured to be alignable with at least one of the first apertures; a first sleeve removably engaged within the aligned first and second apertures, the first sleeve including a first mating portion; a first locking portion cooperating with the first fitting portion to lock the rotating frame when the slip ring bearing is replaced.

According to an exemplary embodiment of the present disclosure, the first sleeve further comprises a first cylindrical portion engaged with the first bore and a second cylindrical portion engaged with the second bore, an outer surface of the first cylindrical portion and an inner surface of the first bore being provided with threads; and/or the outer surface of the second cylindrical portion and the inner surface of the second bore are provided with threads.

According to an exemplary embodiment of the present disclosure, the first cylindrical portion has a diameter smaller than a diameter of the second cylindrical portion, the first and second cylindrical portions being connected by a step; the diameter of the first hole is smaller than the diameter of the second hole.

According to an exemplary embodiment of the present disclosure, the first fitting portion is formed as a thread on an inner surface of the first cylindrical portion or on inner surfaces of the first and second cylindrical portions, the first locking portion is formed as a screw, and a distal end surface of the first sleeve is a positioning surface.

According to an exemplary embodiment of the present disclosure, the at least one first hole comprises a plurality of the first holes evenly distributed on the circumference of the rotating frame; and the at least one second hole includes a plurality of second holes evenly distributed on a periphery of a receiving cavity of the support frame, in which the rotating frame is installed.

According to an exemplary embodiment of the present disclosure, the locking assembly further comprises a second sleeve configured to detachably engage within the second hole with the first sleeve removed from the first and second holes and comprising a second mating portion, the first hole cooperating with a second locking portion to lock the rotating frame when servicing the CT detection device.

According to an exemplary embodiment of the present disclosure, the outer surface of the second sleeve and the inner surface of the second bore comprise threads.

According to an exemplary embodiment of the present disclosure, the second fitting part is formed as a pin hole inside the second sleeve, and the second locking part is formed as a pin inserted into the first hole and the pin hole inside the second sleeve, the pin hole and the first hole having an inner diameter substantially equal to an outer diameter of the pin.

According to an exemplary embodiment of the present disclosure, the first fitting part is formed as a thread on an inner surface of the first cylindrical part or on inner surfaces of the first and second cylindrical parts, and the first locking part is formed as a pin inserted into the first hole and the first fitting part to lock the rotating frame when the CT detection apparatus is serviced.

Drawings

Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention. In the drawings:

FIG. 1 shows a CT detection apparatus according to an embodiment of the invention;

FIG. 2 illustrates a rotating frame according to an embodiment of the present invention;

FIG. 3 shows a support stand according to an embodiment of the invention;

FIG. 4 illustrates a first sleeve according to an embodiment of the present invention;

FIG. 5 illustrates a second sleeve according to an embodiment of the present invention;

FIG. 6 illustrates a partial cross-sectional view of a CT inspection device, with the CT inspection device in a service position, according to an embodiment of the present invention; and

FIG. 7 illustrates a partial cross-sectional view of a CT detection device with a slip ring bearing replaced in accordance with an embodiment of the present invention.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention and should not be construed as limiting the invention.

Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.

In one embodiment of the invention, when the CT detection device is maintained, two sides of the support frame are respectively provided with one cylindrical pin hole, the circumference of the rotating frame is provided with a plurality of cylindrical pin holes, when the CT imaging system rotates to a proper position, one cylindrical pin simultaneously penetrates through the cylindrical pin holes on the rotating frame and the support frame, and thus the rotating frame is fixed at a desired position by the cylindrical pin; when the slip ring bearing is replaced, two fixing blocks are arranged on the support frame, and the other ends of the fixing blocks are fixed on the rotating frame.

Although the locking mechanism of the above embodiment can achieve the locking required for repairing the CT inspection apparatus and replacing the slide ring bearing, the above solution has the disadvantages that: the processing workload of the parts is large, the occupied space is large, and the cost is high. The fixed block is used as a random accessory, needs to be stored for a long time due to less use times and has large volume, so that the fixed block occupies large space during storage.

In view of at least one of the above-described deficiencies, another embodiment of the present application provides an improved solution. The invention is explained in more detail below with reference to the drawings.

As shown in fig. 1-4, an embodiment of the present application provides a CT detection apparatus 100 including a CT imaging system 110, a support frame 120, and a first sleeve 130. The CT imaging system 110 includes a radiation source, a detector, and a rotating frame 111, with the radiation source and detector mounted on the rotating frame 111. The rotating frame 111 is provided at the periphery thereof with at least one first hole 112. The rotating frame 111 is fixed to the support frame 120 by a slip ring bearing. The support bracket 120 is provided with at least one second aperture 122 on the periphery thereof in alignment with the at least one first aperture 112. When the at least one first aperture 112 is aligned with the at least one second aperture 122, the first sleeve 130 is removably engaged within the aligned first and second apertures 112, 122. As shown in fig. 4 and 7, the first sleeve 130 includes a first fitting portion 133, and the first fitting portion 133 is fitted with a first locking portion 150 to lock the rotating frame 111 when the slip ring bearing is replaced. In this way, the described embodiments enable locking of the rotating frame when the slide ring bearing is replaced, with a reduced number of parts and construction, thereby simplifying maintenance work.

In an embodiment, the radiation source provides radiation for detecting the object, e.g. one or several of X-rays, gamma (γ) rays, neutron rays. The radiation source may be, for example, an accelerator, an isotope source, or an X-ray machine, among others. In the examples. The detector is configured to detect radiation emitted from the radiation source.

As shown in fig. 2, the rotating frame 111 includes a plurality of first holes 112, and the plurality of first holes 112 are uniformly distributed on the circumference of the rotating frame 111. As shown in fig. 3, the support bracket 120 includes a receiving cavity 121, and the rotating frame 111 is installed in the receiving cavity 121. The supporting frame 120 includes a plurality of second holes 122, and the plurality of second holes 122 are uniformly distributed on the periphery of the accommodating cavity 121. The examples shown in fig. 2 and 3 are merely illustrative, and one skilled in the art can adjust the number and positions of the first and second holes as needed.

As shown in fig. 4, the first sleeve 130 includes a first cylindrical portion 131 and a second cylindrical portion 132. The first cylindrical portion 131 engages the first bore 112 and the second cylindrical portion 132 engages the second bore 122. In an embodiment, the outer surface of the second cylindrical portion 132 is provided with external threads and the inner surface of the second bore 122 is provided with internal threads, such that the second cylindrical portion 132 and the second bore 122 are threadably mated together. In an embodiment, the outer surface of the first cylindrical portion 131 is provided with an external thread and the inner surface of the first bore 112 is provided with an internal thread, such that the first cylindrical portion 131 and the first bore 112 are threadedly mated together. One skilled in the art may provide external threads on one or both of the two cylindrical portions to mate with corresponding internal threads in the bore, as desired.

As shown in fig. 4, the diameter of the first cylindrical portion 131 is smaller than the diameter of the second cylindrical portion 132. In an embodiment, the first sleeve 130 further comprises a step 134, the step 134 connecting the first sleeve portion 131 and the second sleeve portion 132.

In an embodiment, threads are provided on an inner surface of the first cylindrical portion 131 to form a first mating portion 133, and the first mating portion 133 mates with a first locking portion 150 (such as a screw) to lock the rotating frame. In this way, repositioning of the CT imaging system after installation of a new slip ring bearing can be avoided, thereby facilitating later operation. Moreover, the solution of the present application uses first locking portions, such as screws, which are simple in structure and small in volume, which reduces the amount of work of parts machining and the part space occupied by the locking assembly, compared to the fixed block, thereby allowing the size of the rotating frame to be reduced. It will be appreciated by those skilled in the art that the first and second cylindrical portions 131 and 131 may both be provided with threads on their inner surfaces, and accordingly, the first locking portion 150 simultaneously engages with the threads on the inner surfaces of both the first and second cylindrical portions to effect locking. The skilled person can select the specific arrangement as required.

In an embodiment, when the sliding ring bearing needs to be replaced, the first sleeve 130 is installed in the first hole 112 and the second hole 122, and the rotating frame 111 is rotated to a proper position, at this time, the end of the first sleeve 130 is in a fit state with the surface on the rotating frame 111 in the normal operation position, and then the first locking portion 150 is matched with the first matching portion 133 to achieve locking. In this case, the end of the first sleeve is formed as a locating surface to ensure that the rotating frame is in the same position as it would be in normal operation.

In an embodiment, when the CT detection device needs to be repaired, the first locking part is matched with the first matching part, so that the rotating frame is fixed, and the rotating frame is allowed to be fixed at any angle. In this way, the embodiments of the present application integrate two sets of locking assemblies used in both the case of replacing the slip ring bearing and the case of maintaining the CT inspection apparatus into one set of locking assembly, thereby achieving the locking requirements for the CT imaging system in different application scenarios with a smaller number of parts and structures. Moreover, the embodiment of the application can conveniently and quickly realize the locking function, and parts are small in size and convenient to store. It will be appreciated by those skilled in the art that another locking portion, such as a pin, may be used instead of the first locking portion when servicing of the CT detection device is required.

In an embodiment, the CT detection apparatus 100 further includes a second sleeve 140, the second sleeve 140 configured to cooperate with the second bore 122. In an embodiment, the outer surface of the second sleeve 140 is provided with external threads and the inner surface of the second bore 122 is provided with internal threads, such that the second sleeve 140 is threadedly mounted within the second bore 122.

As shown in fig. 5, the second sleeve 140 includes a second fitting portion 141, and the second fitting portion 141 is fitted with the second locking portion 160 to lock the rotating frame 111 when the CT inspection device 100 is serviced. In an embodiment, the inside of the second sleeve 140 forms a pin hole forming a second fitting portion 141 to be fitted with the second locking portion 160 (such as a pin). As shown in fig. 6, a pin is inserted into the first hole 112 and the pin hole inside the second sleeve 140, thereby stopping the rotating frame 111 at a desired position. In an embodiment, the inner diameter of the pin bore and the first bore 112 is substantially equal to the outer diameter of the pin. It will be understood by those skilled in the art that the interior of the second sleeve 140 may form a threaded hole forming a second mating portion to mate with a second locking portion (such as a screw).

In an embodiment, the second sleeve 140 may be positioned within the second bore 122 during normal operation of the CT detection apparatus 100. When the CT inspection apparatus 100 needs to be serviced, the second locking part is inserted into the second fitting part to achieve fixing of the rotating frame 111. When it is necessary to replace the slip ring bearing, as shown in fig. 7, the second sleeve 140 is removed from the second hole 122, the first sleeve 130 is installed in the second hole 122 and the first hole 112, and then the first locking portion is installed to lock the rotating frame 111. Therefore, the embodiment of the application realizes the locking requirement of the CT imaging system under different application scenes by less part quantity and structure, and can conveniently and quickly realize the locking function.

In an embodiment, the first sleeve and the second sleeve can be formed by modifying screws, for example, by modifying a finished hexagonal round head, so that the cost is reduced, and the workload of part processing is reduced.

It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.

Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of preferred embodiments of the present invention and should not be construed as limiting the invention.

Although a few embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the appended claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Furthermore, any reference signs in the claims shall not be construed as limiting the scope of the invention.