Rotating device for computed tomography (CT) scanner and CT scanner

Abstract

A rotating device for a computed tomography (CT) scanner, and a CT scanner. The rotating device for the CT scanner comprises a connection base (1) and a detector assembly (2). The connection base (1) is a circular ring base (11) with an outer peripheral wall surrounded by a connecting frame (12), and an installation part is provided on the connecting frame (12). The installation part comprises a detector installation portion, on which the detector assembly (2) is arranged. The detector installation portion is in communication with a radiation receiving slot (112). The detector installation portion comprises a plurality of detector sub-installation portions. A separation structure is provided between two adjacent detector sub-installation portions. The detector assembly (2) comprises a plurality of detection units, which are mounted on the plurality of detector sub-installation portions in a one-to-one correspondence manner.

Description

Rotating device for computed tomography (CT) inspection machine and CT inspection machine

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 18, 2023, with application number 202311047137.8, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of radiation detection technology, for example, to a rotating device for a computed tomography (CT) detector and a CT detector. Background Art

[0003] The CT detector includes a fixing device and a rotating device. The rotating device is installed on the slip ring bearing of the fixing device. The rotating device is rotated by driving the motor to realize tomographic scanning.

[0004] In the related art, the radiation source and detector in the rotating device for the CT detector are installed on a circular support frame. Since the X-ray range emitted by the radiation source is large, the space occupied by the detector on the circular support frame is also large. As a result, the opening connected to the detector provided on the circular support frame is also large, which affects the rigidity and strength of the support frame and makes the processing of the support frame more difficult.

[0005] Summary of the Invention

[0006] The present application provides a rotating device for a CT detection machine and a CT detection machine, so as to reduce the difficulty of processing the rotating device and ensure the rigidity and strength of the rotating device.

[0007] The present application provides a rotating device for a CT detector, comprising:

[0008] The connecting seat comprises a circular ring seat and a connecting frame, wherein the connecting frame is arranged around the outer peripheral wall of the circular ring seat and the connecting frame is provided with a mounting portion;

[0009] The detector assembly includes a detector mounting portion, the detector assembly is arranged on the detector mounting portion, the annular seat is provided with a ray receiving slot, and the detector mounting portion is communicated with the ray receiving slot;

[0010] The detector mounting portion includes a plurality of detector sub-mounting portions arranged in sequence along the circumference of the annular seat, a partition structure is provided between two adjacent detector sub-mounting portions, and the detector assembly includes a plurality of detection units, which are installed one-to-one on the plurality of detector sub-mounting portions.

[0011] As an optional solution for the rotating device of the CT detector, the plurality of detector sub-mounting parts include a main detector mounting part and two auxiliary detector mounting parts, and the two auxiliary detector mounting parts are respectively provided on both sides of the main detector mounting part;

[0012] The partition structure includes an end plate, which is mounted on the ray receiving slot, and the main detector mounting portion is formed between two end plates.

[0013] As an optional solution for the rotating device of the CT detector, the plurality of detection units include a main detection unit and two auxiliary detection units, the main detection unit is mounted on the main detector mounting portion, and the auxiliary detection units are mounted on the auxiliary detector mounting portion through the mounting base;

[0014] Each auxiliary detection unit is correspondingly provided with a mounting seat, the auxiliary detection unit is installed in the mounting seat, and the mounting seat is detachably connected to the auxiliary detector mounting portion.

[0015] As an optional solution for the rotating device of the CT detector, the mounting seat includes a seat body and a supporting plate, the auxiliary detection unit is installed on the supporting plate, the supporting plate is arranged on the seat body, and the seat body is detachably connected to the auxiliary detector mounting part.

[0016] As an optional solution for the rotating device of the CT detector, the carrying plate is detachably connected to the base.

[0017] As an optional solution for the rotating device of the CT detector, the detector assembly further includes a cover body, and the cover body is provided on the main detection unit and the base.

[0018] As an optional solution for the rotating device of the CT detection machine, a plug-in limit groove is formed between the auxiliary detector mounting portion and the end plate, and a plug-in limit portion is provided on the base body, and the plug-in limit portion cooperates with the plug-in limit groove to plug the base body into the auxiliary detector mounting portion.

[0019] As an optional solution for the rotating device of a CT detection machine, the base body includes a mounting plate, a first connecting plate and a second connecting plate, the bearing plate is detachably connected to the mounting plate, the first connecting plate is arranged at one end of the mounting plate and is perpendicular to the mounting plate, the bearing plate is arranged to protrude from one end of the mounting plate, and forms the plug-in limit portion with the first connecting plate, the mounting plate is plugged into the plug-in limit groove, and the first connecting plate abuts against the end plate; the second connecting plate is bent downward from the other end of the mounting plate and abuts against the end faces of the first reference frame and the second reference frame.

[0020] As an optional solution for the rotating device of the CT detector, a connecting rib is further provided between the first connecting plate and the mounting plate, and the cover is connected to the connecting rib.

[0021] As an optional solution for the rotating device of the CT detector, the rotating device further includes a radiation source, the radiation source being configured to emit X-rays; the mounting portion further includes a radiation source mounting portion, the radiation source mounting portion and the main detector mounting portion being disposed relative to each other on the outer peripheral wall of the annular seat, the radiation source being mounted on the radiation source mounting portion;

[0022] The annular seat is provided with a ray emitting slot, which is communicated with the ray source mounting portion. The X-rays emitted by the ray source are transmitted through the ray emitting slot and the ray receiving slot to the detector assembly.

[0023] As an optional solution for the rotating device of a CT detector, the connecting frame includes a first reference frame and a second reference frame, both of which surround the outer peripheral wall of the annular seat and are spaced apart along the axial direction of the annular seat, and the mounting portion is formed between the first reference frame and the second reference frame;

[0024] The ray emitting slot and the ray receiving slot are both located between the first reference frame and the second reference frame, and both the ray emitting slot and the ray receiving slot include a first side wall and a second side wall spaced apart along the axial direction of the annular seat, the first side wall is parallel to the side wall of the first reference frame, and the second side wall is parallel to the side wall of the second reference frame.

[0025] As an optional solution for the rotating device of a CT detector, the first reference frame and the second reference frame are arranged in parallel along the axial direction of the annular seat.

[0026] As an optional solution for a rotating device for a CT detector, along the axial direction of the annular seat, the first reference frame and the second reference frame are arranged at a preset angle, and both the first reference frame and the second reference frame extend from the center point of the radiation source mounting portion toward the main detector mounting portion.

[0027] As an optional solution for a rotating device for a CT detection machine, the inner wall of the radiation emitting slot and the inner wall of the radiation receiving slot are both provided with a first radiation shielding coating, and the inner circumferential wall of the annular seat is provided with a second radiation shielding coating, and the thickness of the first radiation shielding coating is greater than the thickness of the second radiation shielding coating.

[0028] As an optional solution for the rotating device of a CT detector, the inner peripheral wall of the annular seat is configured to have a smooth surface.

[0029] As an optional solution for the rotating device of the CT detector, the rotating device further includes an electronic control integrated component and a cooling component, the electronic control integrated component is configured to control the radiation source and provide electrical energy, and the cooling component is configured to dissipate heat for the radiation source;

[0030] The mounting portion also includes an integrated component mounting portion and a cooling component mounting portion, which are respectively located on both sides of the radiation source mounting portion. The electronic control integrated component is arranged in the integrated component mounting portion, and the cooling component is arranged in the cooling component mounting portion.

[0031] As an optional solution for the rotating device of the CT detector, the mounting portion includes a plurality of mounting bosses, and the ray source, the electronic control integrated component and the cooling component are all mounted on the mounting bosses.

[0032] As an optional solution for the rotating device of a CT detector, the mounting boss includes a first mounting boss and a second mounting boss, the first mounting boss is arranged across the first reference frame and the second reference frame, the radiation source mounting portion includes two first mounting bosses arranged opposite to each other, and the radiation source is mounted on the two first mounting bosses;

[0033] The second mounting boss is arranged on the end face or one side of the first reference frame and the second reference frame, and the integrated component mounting part and the cooling component mounting part are each provided with four second mounting bosses, and the electronic control integrated component and the cooling component are respectively mounted on the four second mounting bosses.

[0034] The present application also provides a CT detection machine, which includes a fixing device and a rotating device for the CT detection machine as described in any of the above schemes, the fixing device includes a bracket and a slip ring bearing, the bracket is provided with a mounting hole, the slip ring bearing is arranged in the mounting hole, and the slip ring bearing is connected to the rotating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG1 is a schematic structural diagram of a CT detection machine provided in Example 1 of the present application;

[0036] FIG2 is a schematic structural diagram of another CT detection machine provided in Example 1 of the present application;

[0037] FIG3 is a schematic structural diagram of a fixing device provided in Example 1 of the present application;

[0038] FIG4 is a schematic structural diagram of another fixing device provided in Example 1 of the present application;

[0039] FIG5 is a schematic structural diagram of a rotating device for a CT detector provided in Example 1 of the present application;

[0040] FIG6 is a schematic structural diagram of another rotating device for a CT detector provided in Example 1 of the present application;

[0041] FIG7 is a schematic structural diagram of a connecting socket provided in Example 1 of the present application;

[0042] FIG8 is a schematic structural diagram of another connecting socket provided in Example 1 of the present application;

[0043] FIG9 is a schematic structural diagram of a main detection unit provided in Example 1 of the present application;

[0044] FIG10 is a schematic structural diagram of another connecting socket provided in Example 1 of the present application;

[0045] FIG11 is a schematic diagram of an assembly of an auxiliary detection unit and a mounting base provided in Example 1 of the present application;

[0046] FIG12 is a schematic diagram of the assembly of another auxiliary detection unit and a mounting base provided in Example 1 of the present application;

[0047] FIG13 is a side view of the outer peripheral wall of the connecting base provided in Example 1 of the present application;

[0048] FIG14 is a side view of the inner peripheral wall of the connecting base provided in Example 1 of the present application;

[0049] FIG15 is a schematic structural diagram of a connecting socket provided in Example 2 of the present application;

[0050] FIG16 is a schematic structural diagram of another connecting socket provided in Example 2 of the present application;

[0051] FIG17 is a side view of the outer peripheral wall of the connecting base provided in Example 2 of the present application;

[0052] FIG18 is a side view of the inner peripheral wall of the connecting seat provided in the second embodiment of the present application.

[0053] In the figure: 100, fixing device; 101, bracket; 102, slip ring bearing; 1011, mounting hole; 200, driving device; 201, driving motor; 202, conveyor belt; 300, rotating device; 1, connecting seat; 11, circular ring seat; 111, ray emitting slot; 112, ray receiving slot; 12, connecting frame; 121, first reference frame; 122, second reference frame; 123, end plate; 124, plug-in limit slot; 125, mounting boss; 1251, first mounting boss; 1252, second mounting boss; 126, supporting plate; 13, convex rib; 14, main detector mounting portion; 15, auxiliary detector mounting portion; 2, detector assembly; 21, main detection unit; 211, main detection piece; 22, auxiliary detection unit; 221, auxiliary detection piece; 3. Mounting seat; 31. Base body; 311. Mounting plate; 312. First connecting plate; 313. Second connecting plate; 314. Connecting rib plate; 32. Load-bearing plate; 4. Radiation source; 41. Radiation source mounting portion; 5. Electronic control integrated component; 51. Integrated component mounting portion; 6. Cooling component; 61. Cooling component mounting portion; 7. Cover body. DETAILED DESCRIPTION

[0054] The following describes embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0055] In the description of this application, the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" and the like indicate positions or location relationships based on the positions or location relationships shown in the accompanying drawings. These terms are used solely to facilitate the description of this application and to simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0056] Unless otherwise specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and can refer to internal communication between two components or the interaction between two components. The meanings of these terms in this application can be understood based on actual circumstances.

[0057] Unless otherwise specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0058] The technical solution of the present application will be described below with reference to the accompanying drawings and through implementation methods.

[0059] Example 1:

[0060] As shown in Figures 1 to 4, this embodiment provides a CT detector. The CT detector includes a fixing device 100, a rotating device 300, and a driving device 200. The fixing device 100 includes a bracket 101 and a slip ring bearing 102. The bracket 101 is provided with a mounting hole 1011. The slip ring bearing 102 is disposed in the mounting hole 1011 and is connected to the rotating device 300. The driving device 200 includes a drive motor 201, a pulley, and a conveyor belt 202. The drive motor 201 is fixed to the bracket 101. The main shaft of the drive motor 201 is connected to the pulley. The conveyor belt 202 is configured to connect the pulley and the slip ring bearing 102. The rotating device 300 is mounted on the slip ring bearing 102. The drive motor 201 drives the pulley to rotate via the main shaft. The pulley drives the slip ring bearing 102 to rotate via the conveyor belt 202, thereby driving the rotating device 300 to rotate, thereby achieving tomographic scanning.

[0061] This embodiment provides a CT detector, and a rotating device for the CT detector, comprising: a connecting seat 1, comprising a circular ring seat 11 and a connecting frame 12, the connecting frame 12 being arranged around the outer peripheral wall of the circular ring seat 11, and a mounting portion being provided on the connecting frame 12; a detector assembly 2, the mounting portion comprising a detector mounting portion, the detector assembly 2 being arranged on the detector mounting portion, a radiation receiving slot 112 being provided on the circular ring seat 11, and the detector mounting portion being communicated with the radiation receiving slot 112; the detector mounting portion comprising a plurality of detector sub-mounting portions arranged in sequence along the circumference of the circular ring seat 11, a partition structure being provided between two adjacent detector sub-mounting portions, the detector assembly 2 comprising a plurality of detection units, and the plurality of detection units being mounted in a one-to-one correspondence on the plurality of detector sub-mounting portions.

[0062] As shown in Figures 5 and 6, this embodiment provides a rotating device for a CT detector, which is applied to the above-mentioned CT detector. The rotating device for a CT detector includes a radiation source 4, an electronic control integrated component 5, a cooling component 6, a detector component 2, and a connecting seat 1. The radiation source 4 is configured to emit X-rays, and the detector component 2 can receive X-rays and convert X-ray energy into recordable electrical signals to make judgments about the detected object. The electronic control integrated component 5 is configured to control the radiation source 4 and provide electrical energy, and the cooling component 6 is configured to dissipate heat for the radiation source 4. The radiation source 4, the electronic control integrated component 5, the cooling component 6, and the detector component 2 are all arranged on the outer wall of the connecting seat 1. The radiation source 4 and the detector component 2 are arranged opposite each other, and the detector component 2 can receive X-rays within the radiation range emitted by the radiation source 4. The electronic control integrated component 5 and the cooling component 6 are respectively arranged on both sides of the radiation source 4.

[0063] For example, as shown in Figures 7 to 10, the connecting base 1 includes a circular ring base 11 and a connecting frame 12. The connecting frame 12 is arranged around the outer peripheral wall of the circular ring base 11, and a mounting portion is provided on the connecting frame 12. The mounting portion includes a radiation source mounting portion 41, a detector mounting portion, an integrated component mounting portion 51, and a cooling component mounting portion 61. The radiation source mounting portion 41 and the detector mounting portion are arranged relative to each other on the outer peripheral wall of the circular ring base 11. The radiation source 4 is mounted on the radiation source mounting portion 41, and the detector assembly 2 is mounted on the detector mounting portion. The integrated component mounting portion 51 and the cooling component mounting portion 61 are respectively located on both sides of the radiation source mounting portion 41. The electronic control integrated component 5 is arranged on the integrated component mounting portion 51, and the cooling component 6 is arranged on the cooling component mounting portion 61. The radiation source mounting portion 41 and the main detector mounting portion 14 are arranged relative to each other on the outer peripheral wall of the circular ring base 11.

[0064] Exemplarily, the connecting frame 12 includes a first reference frame 121 and a second reference frame 122 . The first reference frame 121 and the second reference frame 122 are both surrounded by the outer peripheral wall of the annular seat 11 and are arranged at intervals along the axial direction of the annular seat 11 , and a mounting portion is formed between the first reference frame 121 and the second reference frame 122 .

[0065] Illustratively, the mounting portion includes a plurality of mounting bosses 125, on which the radiation source 4, the electronic control integrated assembly 5, and the cooling assembly 6 are all mounted. In this embodiment, the radiation source 4, the electronic control integrated assembly 5, and the cooling assembly 6 can all be directly mounted on the connecting frame 12, significantly reducing the machining of the mounting surface. The annular seat 11 and the connecting frame 12 are cast as an integrally formed part, resulting in a simple structure, reduced overall weight, and lower processing costs.

[0066] Exemplarily, the mounting bosses 125 include a first mounting boss 1251 and a second mounting boss 1252. The first mounting boss 1251 is arranged across the first reference frame 121 and the second reference frame 122. The radiation source mounting portion 41 includes two first mounting bosses 1251 arranged opposite each other, and the radiation source 4 is mounted on the two first mounting bosses 1251 via fastening screws. The second mounting bosses 1252 are provided on the end faces or one side of the first reference frame 121 and the second reference frame 122. The integrated assembly mounting portion 51 and the cooling assembly mounting portion 61 are each provided with four second mounting bosses 1252. The electronic control integrated assembly 5 and the cooling assembly 6 are each mounted on the four second mounting bosses 1252 corresponding to the mounting portions of the electronic control integrated assembly 5 and the cooling assembly 6, respectively, via fastening screws.

[0067] Since the detector assembly 2 needs to receive X-rays emitted by the ray source 4, a ray emitting slot 111 and a ray receiving slot 112 are provided on the annular seat 11. The ray emitting slot 111 is connected to the ray source mounting portion 41, and the detector mounting portion is connected to the ray receiving slot 112. The X-rays emitted by the ray source 4 reach the detector assembly 2 through the ray emitting slot 111 and the ray receiving slot 112.

[0068] Usually, when the radiation source 4 emits X-rays, it forms a fan-shaped body with the emission point of the radiation source 4 as the starting point. Therefore, in order to ensure that all X-rays can be received, the detector assembly 2 usually occupies a larger space on the outer wall of the connecting frame 12, and the space on the outer wall of the annular seat 11 occupied by the radiation receiving groove 112 is also larger, so that a larger opening is formed on the annular seat 11, thereby reducing the rigidity and strength of the annular seat 11.

[0069] To address the aforementioned issues, the detector mounting portion provided in this embodiment includes multiple detector sub-mounts arranged sequentially along the circumference of the annular base 11, with a partition structure provided between adjacent detector sub-mounts. The detector assembly includes multiple detection units, which are mounted one-to-one to the multiple detector sub-mounts. Dividing the detector mounting portion into multiple detector sub-mounts and mounting the partition structures between the detector sub-mounts on the larger radiation receiving slot 112 can increase the rigidity and strength of the connecting base 1.

[0070] In this embodiment, the multiple detection units include a main detection unit 21 and two auxiliary detection units 22. The main detection unit 21 is mounted on the main detector mounting portion 14, and the auxiliary detection unit 22 is mounted on the auxiliary detector mounting portion 15. Each auxiliary detection unit 22 is provided with a corresponding mounting seat 3, and the auxiliary detection unit 22 is mounted in the mounting seat 3. The mounting seat 3 is detachably connected to the auxiliary detector mounting portion 15. The multiple detector sub-mounts include a main detector mounting portion 14 and two auxiliary detector mounting portions 15, and the two auxiliary detector mounting portions 15 are respectively provided on either side of the main detector mounting portion 14. Exemplarily, the partition structure includes an end plate 123, which is mounted on the radiation receiving slot 112, and the main detector mounting portion 14 is formed between the two end plates 123. The ends of the end plate 123 are respectively connected to the first reference frame 121 and the second reference frame 122, and are mounted on the radiation receiving slot 112, which can prevent the rigidity and strength of the connecting frame 12 from being reduced due to the excessive opening of the radiation receiving slot 112.

[0071] In other embodiments, the number of detection units may be five, seven, nine or other numbers, and they may be symmetrically arranged with the main detection unit 21 as the center.

[0072] Exemplarily, the main detection unit 21 includes a plurality of main detection pieces 211, which are mounted side by side between the two end plates 123. In the main detector mounting portion 14, support plates 126 are provided on the side where the first and second reference frames 121 and 122 are adjacent to each other. Each main detection piece 211 is connected to the support plate 126 at both ends via screws.

[0073] As shown in Figures 11 and 12, the mounting base 3 includes a base body 31 and a supporting plate 32. The auxiliary detection unit 22 includes a plurality of auxiliary detection pieces 221, which are mounted side by side on the supporting plate 32. The auxiliary detection unit 22 is mounted on the supporting plate 32, which is provided on the base body 31. The base body 31 is detachably connected to the auxiliary detector mounting portion 15. The end faces of the first reference frame 121 and the second reference frame 122 located on the auxiliary detector mounting portion 15 are adapted to the outer shape of the base body 31, so that the base body 31 can be fixed to the end faces of the first reference frame 121 and the end faces of the second reference frame 122 via fastening screws.

[0074] In order to effectively shield the X-rays emitted by the radiation source 4 and prevent the X-rays from leaking out, the detector assembly 2 also includes a cover 7, which is arranged on the main detection unit 21 and the base 31, and the cover 7 is connected to the end face of the first reference frame 121, the end face of the second reference frame 122 and the base 31 located on the main detector mounting part 14 through fastening screws.

[0075] Due to different requirements of the detected objects, the detection optical path of the CT detector includes a standard arc design and a non-standard arc design. Usually, different rotating devices 300 need to be set up to adapt to the detection optical path with a standard arc design and a non-standard arc design, which increases costs.

[0076] The connector 1 provided in this embodiment can selectively position the arc where the auxiliary detection unit 22 and the arc where the main detection unit 21 are located on the same arc line or on different arc lines by replacing the mounting base 3. By changing the structure of the mounting base 3 and increasing or decreasing the thickness of the mounting base 3, the arc where the auxiliary detection unit 22 and the arc where the main detection unit 21 are located can be selectively positioned on the same arc line or on different arc lines by replacing the mounting base 3 to accommodate different detection light path designs. This allows a single connector 1 to be compatible with designs with standard and non-standard detection light path arrangements, resulting in greater versatility and reduced costs.

[0077] Exemplarily, the supporting plate 32 is detachably connected to the base 31. By replacing the supporting plate 32 with a supporting plate of different thicknesses, the arc where the auxiliary detection unit 22 is located can be selectively positioned on the same arc line or on different arc lines as the arc where the main detection unit 21 is located. Exemplarily, if the arc where the auxiliary detection unit 22 is located is located on the same arc line as the arc where the main detection unit 21 is located, the thickness of the supporting plate 32 is h; then, if the arc where the auxiliary detection unit 22 is located is closer to the center of the annular base 11 relative to the arc where the main detection unit 21 is located, the thickness of the supporting plate 32 is greater than h; if the arc where the auxiliary detection unit 22 is located is farther away from the center of the annular base 11 relative to the arc where the main detection unit 21 is located, the thickness of the supporting plate 32 is less than h.

[0078] In this embodiment, by detachably connecting the supporting plate 32 to the base 31, the versatility of the rotating device 300 can be achieved by simply replacing the supporting plate 32. In other embodiments, the supporting plate 32 and the base 31 can also be integrally provided, and the versatility of the rotating device 300 can be achieved by replacing the mounting base 3.

[0079] 7 and 8 , an insertion stopper slot 124 is formed between the auxiliary detector mounting portion 15 and the end plate 123. The base body 31 is provided with an insertion stopper that cooperates with the insertion stopper slot 124 to insert the base body 31 into the auxiliary detector mounting portion 15. After the main detector unit 21 is mounted on the main detector mounting portion 14, the mounting base 3, with the auxiliary detector unit 22 mounted thereon, is inserted into the auxiliary detector mounting portion 15 from the side of the main detector mounting portion 14. After the mounting base 3 is positioned, the base body 31 is secured to the auxiliary detector mounting portion 15 using screws.

[0080] Exemplarily, the base body 31 includes a mounting plate 311, a first connecting plate 312, and a second connecting plate 313. The supporting plate 32 is detachably connected to the mounting plate 311. The first connecting plate 312 is disposed at one end of the mounting plate 311 and is arranged perpendicular to the mounting plate 311. The supporting plate 32 protrudes from one end of the mounting plate 311 and forms a plug-in limit portion with the first connecting plate 312. The mounting plate 311 is inserted into the plug-in limit slot 124, and the first connecting plate 312 abuts against the end plate 123. The second connecting plate 313 bends downward from the other end of the mounting plate 311 and abuts against the end surfaces of the first and second reference frames 121, 122. A connecting rib 314 is also provided between the first connecting plate 312 and the mounting plate 311, and the cover body 7 is connected to the connecting rib 314.

[0081] Illustratively, in this embodiment, two connecting ribs 314 are provided opposite to each other, and threaded holes are provided on both connecting ribs 314 . The fastening screws pass through the cover body 7 and are screwed to the threaded holes on the connecting ribs 314 .

[0082] X-rays emitted by radiation source 4 are received by detector assembly 2 via radiation emitting slot 111 and radiation receiving slot 112. Radiation emitting slot 111 serves as the first confinement boundary for X-rays, while radiation receiving slot 112 serves as the second confinement boundary for X-rays. Typically, a small amount of scattered X-rays are present on the inner circumference of annular seat 11. To better shield X-rays and prevent them from leaking and endangering human health, a first radiation shielding coating is provided on the inner walls of radiation emitting slot 111 and radiation receiving slot 112, while a second radiation shielding coating is provided on the inner circumference of annular seat 11. The thickness of the first radiation shielding coating is greater than that of the second radiation shielding coating. In this embodiment, the radiation shielding coating is a lead coating.

[0083] For example, the inner peripheral wall of the annular seat 11 is set to a smooth surface. The setting of the smooth surface is more convenient for applying the second radiation shielding coating and can reduce the amount of lead used.

[0084] Exemplarily, the ray emitting slot 111 and the ray receiving slot 112 are both located between the first reference frame 121 and the second reference frame 122. The ray emitting slot 111 and the ray receiving slot 112 both include a first side wall and a second side wall spaced apart along the axial direction of the annular seat 11. The first side wall is parallel to the side wall of the first reference frame 121, and the second side wall is parallel to the side wall of the second reference frame 122.

[0085] As shown in Figures 13 and 14 , along the axial direction of the annular base 11, the first and second reference frames 121, 122 are arranged at a predetermined angle. Both first and second reference frames 121, 122 extend from the center of the radiation source mounting portion 41 toward the main detector mounting portion 14. This distance between the first and second reference frames 121, 122 increases as they approach the detector mounting portion, thereby facilitating installation of the detector assembly 2. Because the first radiation shielding coating applied to the inner walls of the radiation emitting and receiving slots 111, 112 is relatively thick, the shapes of the radiation emitting and receiving slots 111, 112 determine the coating area of ​​the first radiation shielding coating. By arranging the first and second reference frames 121, 122 at a predetermined angle, which is determined based on the X-ray cone angle emitted by the radiation source 4, not only can the radiation emitting and receiving slots 111, 112 pass all X-rays emitted by the radiation source 4, but the coating area of ​​the first radiation shielding coating is minimized, thereby minimizing lead usage and further reducing costs.

[0086] Since the first reference frame 121 and the second reference frame 122 are arranged at a preset angle, in order to meet the installation requirements of the ray source 4, the electronic control integrated component 5 and the cooling component 6, the second mounting boss 1252 of the ray source mounting part 41, the integrated component mounting part 51 and the cooling component mounting part 61 are arranged on the side away from each other of the first reference frame 121 and the second reference frame 122.

[0087] In addition, since the distance between the first reference frame 121 and the second reference frame 122 decreases as the distance is closer to the radiation source mounting portion 41, the distance between the first reference frame 121 and the corresponding end of the annular seat 11 and the distance between the second reference frame 122 and the corresponding end of the annular seat 11 will increase accordingly. The end of the annular seat 11 closest to the second reference frame 122 is connected to the slip ring bearing 102. The end of the annular seat 11 connected to the slip ring bearing 102 is provided with multiple threaded holes at intervals, and is connected to the slip ring bearing 102 through the multiple threaded holes. To ensure the rigidity and strength of the annular seat 11, a rib 13 is provided on the annular seat 11, extending from the first reference frame 121 to the corresponding end of the annular seat 11.

[0088] The rotating device for a CT scanner provided in this embodiment utilizes a highly integrated, cast connector 1 to directly mount the radiation source 4, electronic control integrated assembly 5, and cooling assembly 6 on a connector frame 12. This minimizes the number and variety of adapters required, reducing the number and types of mounting components and achieving a lightweight design for the rotating device 300. Accordingly, the load on the slip ring bearing 102 and bracket 101 in the fixture 100 of a CT scanner employing the rotating device 300 is reduced, allowing the drive device 200 to utilize a lower-power drive motor 201. This achieves a lightweight design for the CT scanner and significantly reduces its cost.

[0089] The CT detector provided in this embodiment uses the above-mentioned rotating device of the CT detector, which is not only easy to process and manufacture, but also can ensure the rigidity and strength of the rotating device 300; and is applicable to designs with standard arc and non-standard arc detection light paths, has better versatility, and reduces the cost of the CT detector.

[0090] The present application provides a rotating device for a CT detector, comprising a connecting seat and a detector assembly. The connecting seat is a circular seat with a connecting frame surrounding the outer peripheral wall, and a mounting portion is provided on the connecting frame. The mounting portion includes a detector mounting portion, and the detector assembly is arranged on the detector mounting portion. The detector mounting portion is connected to the radiation receiving slot. The detector mounting portion includes a plurality of detector sub-mounting portions arranged in sequence along the circumference of the circular seat, and a partition structure is provided between two adjacent detector sub-mounting portions. Because the space occupied by the radiation receiving slot is large, the opening of the circular seat is large, resulting in a reduction in the rigidity and strength of the circular seat. The detector mounting portion is divided into a plurality of detector sub-mounting portions, and the partition structure between the detector sub-mounting portions is erected on the larger radiation receiving slot, which can increase the rigidity and strength of the connecting seat.

[0091] The detector assembly includes a main detection unit and two auxiliary detection units. The main detection unit is arranged on the main detector mounting part, and the auxiliary detection unit is installed on the auxiliary detector mounting part through a mounting base. The mounting base is detachably connected to the auxiliary detector mounting part. Such an arrangement can selectively raise or lower the mounting base by replacing the mounting base, so that the arc where the auxiliary detection unit is located and the arc where the main detection unit is located are located on the same arc shape or different arc lines to adapt to the design of different detection optical paths, so that one connecting base can be compatible with the design of the detection optical path with a standard arc arrangement and the design with a non-standard arc arrangement, which has better versatility and reduces cost.

[0092] The CT detection machine provided by the present application includes a fixing device and the above-mentioned rotating device. The rotating device has a simple structure, is easy to cast, and does not affect the rigidity and strength of the rotating device. At the same time, the rotating device divides the detector assembly into a main detection unit and two auxiliary detection units, and installs the auxiliary detection units on the auxiliary detector mounting part through mounting bases, so that the auxiliary detection units can be placed on the same arc line or on different arc lines as the main detection unit by replacing the mounting base, so as to be compatible with the detection optical path of standard arc and non-standard arc design, thereby having better versatility and reducing the cost of the CT detection machine.

[0093] Example 2:

[0094] This embodiment provides a rotation device for a CT detector, which is applied to the CT detector of the first embodiment. The structure of the rotation device for a CT detector provided in this embodiment is substantially the same as that of the rotation device for a CT detector provided in the first embodiment, and the same structure will not be described here. The difference between the rotation device for a CT detector provided in this embodiment and the rotation device for a CT detector provided in the first embodiment is:

[0095] As shown in Figures 15 to 18, the first reference frame 121 and the second reference frame 122 are arranged in parallel along the axial direction of the annular seat 11. Accordingly, viewed from the side, the ray emitting slot 111 and the ray receiving slot 112 are both rectangular.

[0096] In this embodiment, the second mounting bosses 1252 are provided on the end surfaces of the first and second reference frames 121 and 122. To facilitate installation of the radiation source 4, the end surfaces of the first and second reference frames 121 and 122 between the two first mounting bosses 1251 are machined into a horizontal surface.

Claims

1. A rotating device for a computerized tomography (CT) detector, comprising: A connecting seat (1) comprises a circular ring seat (11) and a connecting frame (12), wherein the connecting frame (12) is arranged around the outer peripheral wall of the circular ring seat (11), and a mounting portion is arranged on the connecting frame (12); A detector assembly (2), wherein the mounting portion comprises a detector mounting portion, the detector assembly (2) is arranged on the detector mounting portion, a ray receiving groove (112) is provided on the annular seat (11), and the detector mounting portion is in communication with the ray receiving groove (112); The detector mounting portion comprises a plurality of detector sub-mounting portions arranged in sequence along the circumference of the annular seat (11), a partition structure being arranged between two adjacent detector sub-mounting portions, and the detector assembly (2) comprises a plurality of detection units, which are mounted on the plurality of detector sub-mounting portions in a one-to-one correspondence.

2. The rotating device according to claim 1, wherein: The plurality of detector sub-mounting parts include a main detector mounting part (14) and two auxiliary detector mounting parts (15), wherein the two auxiliary detector mounting parts (15) are respectively arranged on two sides of the main detector mounting part (14); The partition structure comprises an end plate (123), the end plate (123) being mounted on the ray receiving slot (112), and the main detector mounting portion (14) being formed between two end plates (123).

3. The rotating device according to claim 2, wherein: The plurality of detection units include a main detection unit (21) and two auxiliary detection units (22), the main detection unit (21) being mounted on the main detector mounting portion (14), and the auxiliary detection unit (22) being mounted on the auxiliary detector mounting portion (15); Each auxiliary detection unit (22) is provided with a corresponding mounting seat (3), the auxiliary detection unit (22) is mounted in the mounting seat (3), and the mounting seat (3) is detachably connected to the auxiliary detector mounting portion (15).

4. The rotating device according to claim 3, wherein: The mounting seat (3) comprises a seat body (31) and a bearing plate (32), the auxiliary detection unit (22) is mounted on the bearing plate (32), the bearing plate (32) is arranged on the seat body (31), and the seat body (31) is detachably connected to the auxiliary detector mounting portion (15).

5. The rotating device according to claim 4, wherein: The carrying plate (32) is detachably connected to the seat body (31).

6. The rotating device according to claim 4, wherein: The detector assembly (2) further comprises a cover body (7), wherein the cover body (7) is arranged to cover the main detection unit (21) and the base body (31).

7. The rotating device according to claim 6, wherein: A plug-in limit groove (124) is formed between the auxiliary detector mounting portion (15) and the end plate (123), and a plug-in limit portion is provided on the seat body (31), and the plug-in limit portion cooperates with the plug-in limit groove (124) to plug the seat body (31) into the auxiliary detector mounting portion (15).

8. The rotating device according to claim 7, wherein: The seat body (31) comprises a mounting plate (311), a first connecting plate (312) and a second connecting plate (313); the bearing plate (32) is detachably connected to the mounting plate (311); the first connecting plate (312) is arranged at one end of the mounting plate (311) and is arranged perpendicular to the mounting plate (311); the bearing plate (32) is arranged to protrude from one end of the mounting plate (311) and forms the plug-in limiting portion with the first connecting plate (312); the mounting plate (311) is plugged into the plug-in limiting groove (124); the first connecting plate (312) is abutted against the end plate (123); the second connecting plate (313) is bent downward from the other end of the mounting plate (311) and abuts against the end surface of the connecting frame (12).

9. The rotating device according to claim 8, wherein: A connecting rib plate (314) is also provided between the first connecting plate (312) and the mounting plate (311), and the cover body (7) is connected to the connecting rib plate (314).

10. The rotating device according to any one of claims 2 to 9, wherein: The rotating device further comprises a radiation source (4), wherein the radiation source (4) is configured to emit X-rays; the mounting portion further comprises a radiation source mounting portion (41), wherein the radiation source mounting portion (41) and the main detector mounting portion (14) are arranged on the outer peripheral wall of the annular seat (11) relative to each other, and the radiation source (4) is mounted on the radiation source mounting portion (41); The annular seat (11) is also provided with a ray emitting slot (111), the ray emitting slot (111) being in communication with the ray source mounting portion (41), and the X-rays emitted by the ray source (4) are transmitted to the detector assembly (2) via the ray emitting slot (111) and the ray receiving slot (112).

11. The rotating device according to claim 10, wherein: The connecting frame (12) comprises a first reference frame (121) and a second reference frame (122), wherein the first reference frame (121) and the second reference frame (122) are both arranged around the outer peripheral wall of the annular seat (11) and are spaced apart along the axial direction of the annular seat (11), and the mounting portion is formed between the first reference frame (121) and the second reference frame (122); The ray emitting slot (111) and the ray receiving slot (112) are both located between the first reference frame (121) and the second reference frame (122), and the ray emitting slot (111) and the ray receiving slot (112) both include a first side wall and a second side wall spaced apart along the axial direction of the annular seat (11), wherein the first side wall is parallel to the side wall of the first reference frame (121), and the second side wall is parallel to the side wall of the second reference frame (122).

12. The rotating device according to claim 11, wherein: Along the axial direction of the annular seat (11), the first reference frame (121) and the second reference frame (122) are arranged in parallel.

13. The rotating device according to claim 11, wherein: Along the axial direction of the annular seat (11), the first reference frame (121) and the second reference frame (122) are arranged at a preset angle, and both the first reference frame (121) and the second reference frame (122) extend from the center point of the ray source mounting portion (41) toward the main detector mounting portion (14).

14. The rotating device according to claim 12 or 13, wherein: The inner wall of the ray emitting slot (111) and the inner wall of the ray receiving slot (112) are both provided with a first ray shielding coating, and the inner peripheral wall of the annular seat (11) is provided with a second ray shielding coating, and the thickness of the first ray shielding coating is greater than the thickness of the second ray shielding coating.

15. The rotating device according to claim 14, wherein: The inner peripheral wall of the annular seat (11) is arranged to be a smooth surface.

16. The rotating device according to claim 11, wherein: The rotating device further comprises an electric control integrated component (5) and a cooling component (6), wherein the electric control integrated component (5) is configured to control the radiation source (4) and provide electrical energy, and the cooling component (6) is configured to dissipate heat for the radiation source (4); The mounting portion further comprises an integrated component mounting portion (51) and a cooling component mounting portion (61), wherein the integrated component mounting portion (51) and the cooling component mounting portion (61) are respectively located on two sides of the radiation source mounting portion (41), and the electric control integrated component (5) is arranged The integrated component mounting portion (51), the cooling component (6) is arranged on the cooling component mounting portion (61).

17. The rotating device according to claim 16, wherein: The mounting portion comprises a plurality of mounting bosses (125), and the ray source (4), the electric control integrated component (5) and the cooling component (6) are all mounted on the mounting bosses (125).

18. The rotating device according to claim 17, wherein: The mounting boss (125) comprises a first mounting boss (1251) and a second mounting boss (1252), the first mounting boss (1251) being arranged across the first reference frame (121) and the second reference frame (122), the ray source mounting portion (41) comprising two first mounting bosses (1251) arranged opposite to each other, and the ray source (4) is mounted on the two first mounting bosses (1251); The second mounting boss (1252) is arranged on the end surface or one side of the first reference frame (121) and the second reference frame (122), and the integrated component mounting portion (51) and the cooling component mounting portion (61) are each provided with four second mounting bosses (1252), and the electronic control integrated component (5) and the cooling component (6) are respectively mounted on the four second mounting bosses (1252).

19. A computerized tomography (CT) detection machine, comprising a fixing device (100) and a rotating device for a CT detection machine according to any one of claims 1 to 18, wherein the fixing device (100) comprises a bracket (101) and a slip ring bearing (102), wherein a mounting hole (1011) is provided on the bracket (101), the slip ring bearing (102) is arranged in the mounting hole (1011), and the slip ring bearing (102) is connected to the rotating device.

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