A suspended rotating mechanism for CT imaging
The suspended rotating mechanism solves the space occupation and stability problems of traditional CT imaging equipment rotating mechanisms through the nested layout of direct drive motors and photoelectric slip rings, achieving high-precision rotation and imaging, and is suitable for a variety of detection scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RUIYING DETECTION TECH (JINAN) CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-07-31
AI Technical Summary
Traditional CT imaging equipment has a complex rotating mechanism structure, occupies a large space, and lacks rotational stability, which limits the flexibility and imaging quality of the equipment, especially in space-constrained application scenarios.
The suspended rotating mechanism uses a direct-drive motor with a hollow structure nested with photoelectric slip rings, combined with a longitudinally stacked suspension layout, to directly drive the rotating frame, reducing transmission errors and improving rotational stability and accuracy. The wiring storage structure also achieves both aesthetics and safety.
It effectively reduces the space occupied by the equipment, improves rotational stability and imaging accuracy, expands the application range of the equipment, and is suitable for space-constrained and large object detection scenarios.
Smart Images
Figure CN224580069U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of X-ray CT imaging technology, specifically relating to a suspended rotating mechanism for CT imaging. Background Technology
[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.
[0003] In the medical and industrial fields, X-ray CT imaging technology is crucial. Its principle is that an X-ray source generates rays that penetrate an object. Because different tissues absorb and attenuate rays differently, detectors receive the penetrating rays from multiple angles and convert them into electrical signals. These signals are then processed by a computer and sophisticated algorithms to reconstruct a tomographic image of the object's interior.
[0004] In practical testing, there are often situations where the object to be inspected cannot or is inconvenient to rotate. In such cases, rotational detection of the X-ray source and detector becomes a necessary method. Traditional X-ray source detectors often use a fixed base to support the rotating platform. However, this method has certain problems. On the one hand, its structure is complex, involving numerous interconnected components, which greatly increases the difficulty of installation, debugging, and maintenance. On the other hand, it occupies a large space, which is extremely unfavorable for testing environments with limited space, especially in applications with stringent space requirements, such as vehicle-mounted mobile inspection equipment and small medical clinics. The large rotating mechanism severely restricts the layout and flexibility of the equipment. At the same time, the rotational stability is insufficient, and it is susceptible to interference from various factors during rotation, such as motor vibration and component wear, leading to a decrease in rotational accuracy and thus affecting image quality. In medical diagnosis, this may cause misdiagnosis or missed diagnosis, and in industrial inspection, it may be impossible to accurately identify product defects. Especially for large equipment, the weight and size of the rotating mechanism itself not only exacerbate the above problems but also limit the overall flexibility and application scope of the equipment. Utility Model Content
[0005] To address the aforementioned issues, this invention provides a suspended rotating mechanism for CT imaging. It achieves a compact structure and saves space by using a direct-drive motor with a hollow structure nested with a photoelectric slip ring, combined with a longitudinally stacked suspension layout. The direct-drive motor directly drives the rotating frame, synchronously rotating the photoelectric slip ring rotor, reducing transmission errors and improving rotational stability and accuracy. The rotating frame's rectangular tube openings, cover plates, and protective covers accommodate all wiring, combining aesthetics and safety. The overall suspension design eliminates the limitations of a base, enhancing application flexibility and making it suitable for space-constrained and large object detection scenarios.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A suspended rotating mechanism for CT imaging includes a fixed plate, a direct-drive motor, a photoelectric slip ring, a connecting plate, and a rotating frame. The fixed plate is fixed to the top of the equipment, and a protective plate is mounted on the fixed plate. A stop bar is provided on the protective plate. A stop plate is provided on the stop bar, and a photoelectric slip ring is provided at the lower end of the stop plate. The stop plate is used to prevent the stator rotation of the photoelectric slip ring. The direct-drive motor is mounted at the lower end of the fixed plate. The direct-drive motor has a hollow structure, and the photoelectric slip ring is located inside the hollow structure. The lower end of the direct-drive motor is a rotor, and the rotor is connected to the connecting plate. The lower end of the photoelectric slip ring is a rotor, and the rotor portion of the photoelectric slip ring is fixed to a circular plate.
[0008] As a further technical solution, the upper end of the connecting plate is fixedly connected to the direct drive motor, and the lower end of the connecting plate is fixedly connected to the top surface of the rotating frame and the connecting pipe.
[0009] As a further technical solution, the lower end of the connecting pipe is connected to the circular plate, and several fixed pipes are spaced apart at the lower end of the circular plate.
[0010] As a further technical solution, the upper end of the fixing tube is connected to the circular plate, and the lower end of the fixing tube is connected to the protective cover, thereby connecting the protective cover and the circular plate through the fixing tube.
[0011] As a further technical solution, a radiation source assembly is installed at one end of the rotating frame, and a detector assembly is installed at the other end of the rotating frame. The photoelectric slip ring serves as a medium to provide power input and photoelectric signal transmission for the radiation source assembly and the detector assembly.
[0012] As a further technical solution, the radiation source assembly includes an adjustment plate and a radiation source, with one end of the adjustment plate connected to a rotating frame and the other end of the adjustment plate connected to the radiation source.
[0013] As a further technical solution, the detector assembly includes a detector side plate, a detector back plate, a detector base plate, and a detector, wherein the detector is mounted on the detector back plate.
[0014] As a further technical solution, detector side plates are provided on both sides of the detector back plate, and a detector base plate is provided at the lower end of the detector back plate. The detector is wrapped and fixedly installed on the rotating frame by the detector back plate, detector side plates and detector base plate.
[0015] As a further technical solution, a first cover plate is provided at one end of the upper part of the rotating frame, and a second cover plate is provided at the other end of the upper part; a third cover plate is provided at one end of the lower part of the rotating frame, and a fourth cover plate is provided at the other end of the lower part.
[0016] As a further technical solution, a testing platform is also included, which is located at the lower end of the rotating frame, and the part to be tested is placed on the testing platform.
[0017] Compared with the prior art, the advantages and positive effects of this utility model are:
[0018] This utility model features a hollow structure for its direct-drive motor, with a photoelectric slip ring inserted within its hollow hole, forming a nested layout where the motor encloses the slip ring. Simultaneously, the core components, including the direct-drive motor, photoelectric slip ring, and rotating frame, are suspended sequentially from top to bottom below a fixed plate, exhibiting a vertically stacked design. This structural arrangement eliminates the need for additional lateral support space for each component, and the recessed installation of the photoelectric slip ring further reduces its vertical height, effectively minimizing the overall space required and making it suitable for space-constrained environments.
[0019] The direct-drive motor is rigidly connected to the rotating frame via a connecting plate, eliminating the intermediate transmission components in traditional rotating mechanisms and avoiding rotational errors caused by transmission backlash. Simultaneously, the rotor of the photoelectric slip ring is fixed to the direct-drive motor rotor via a circular plate and connecting pipe, ensuring synchronous rotation of the slip ring and the rotating frame and reducing relative sway. This rigid linkage structure of the direct-drive motor, rotating frame, and slip ring rotor significantly improves the stability and accuracy of the rotation process, ensuring imaging quality.
[0020] This invention achieves both aesthetics and safety through a wiring concealment structure. The rotating frame adopts a rectangular tube structure with a central opening, allowing the wiring of the X-ray source and detector to pass through the inside of the rectangular tube. Simultaneously, cover plates are fixed at the top and bottom of the rotating frame, and together with the protective cover, a structure connecting four fixed tubes to a circular plate and a slip ring rotor completely encloses the fiber optic cable and other wiring of the photoelectric slip ring. This design eliminates any exposed wiring on the outside, avoiding the risk of wiring entanglement or damage, and also improves the overall aesthetics of the structure. The entire structure is suspended from the top of the equipment system by a fixed plate, eliminating the need for a traditional fixed base, reducing reliance on ground space. This is particularly suitable for situations where large objects to be inspected cannot be moved and where the equipment needs to flexibly adapt to the inspection scenario, thus expanding the application range of the equipment. Attached Figure Description
[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0022] Figure 1 This is a three-dimensional structural diagram of the suspended rotating mechanism for CT imaging according to this utility model. Figure 1 ;
[0023] Figure 2 This is a three-dimensional structural diagram of the suspended rotating mechanism for CT imaging according to this utility model. Figure 2 ;
[0024] Figure 3 This is a cross-sectional view of the suspended rotating mechanism for CT imaging according to this utility model;
[0025] Figure 4 yes Figure 3 Enlarged view of Part I;
[0026] Figure 5 This is a three-dimensional structural diagram of the rotating frame of this utility model;
[0027] Figure 6 This is a three-dimensional structural diagram of the connecting plate of this utility model;
[0028] In the diagram: 1. Testing platform; 2. Item to be tested; 3. X-ray source; 4. Rotating frame; 5. First cover plate; 6. Fixing plate; 7. Protective plate; 8. Stop plate; 9. Second cover plate; 10. Detector side plate; 11. Detector; 12. Detector back plate; 13. Detector base plate; 14. Direct drive motor; 15. Third cover plate; 16. Protective cover; 17. Fourth cover plate; 18. Photoelectric slip ring; 19. Connecting plate; 20. Connecting pipe; 21. Circular plate; 22. Fixing pipe; 23. Stop bar; 24. Adjusting plate. Detailed Implementation
[0029] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0030] In practical testing, there are often situations where the object to be inspected cannot or is inconvenient to rotate. In such cases, rotational detection of the X-ray source and detector becomes a necessary method. Traditional X-ray source detectors often use a fixed base to support the rotating platform. However, this method has certain problems. On the one hand, its structure is complex, involving numerous interconnected components, which greatly increases the difficulty of installation, debugging, and maintenance. On the other hand, it occupies a large space, which is extremely unfavorable for testing environments with limited space, especially in applications with stringent space requirements, such as vehicle-mounted mobile inspection equipment and small medical clinics. The large rotating mechanism severely restricts the layout and flexibility of the equipment. At the same time, the rotational stability is insufficient, and it is susceptible to interference from various factors during rotation, such as motor vibration and component wear, leading to a decrease in rotational accuracy and thus affecting image quality. In medical diagnosis, this may cause misdiagnosis or missed diagnosis, and in industrial inspection, it may be impossible to accurately identify product defects. Especially for large equipment, the weight and size of the rotating mechanism itself not only exacerbate the above problems but also limit the overall flexibility and application scope of the equipment.
[0031] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a suspended rotating mechanism for CT imaging, such as... Figure 1 , Figure 2 as well as Figure 3 As shown, the device includes a fixed plate 6, a direct drive motor 14, a photoelectric slip ring 18, a connecting plate 19, and a rotating frame 4. The fixed plate 6 is fixed to the top of the equipment. A protective plate 7 is installed on the fixed plate 6, and a stop bar 23 is provided on the protective plate 7. A stop plate 8 is provided on the stop bar 23, and the photoelectric slip ring 18 is provided at the lower end of the stop plate 8. The stop plate 8 is used to block the stator rotation of the photoelectric slip ring 18. The direct drive motor 14 is installed at the lower end of the fixed plate 6. The direct drive motor 14 has a hollow structure, and the photoelectric slip ring 18 is located inside the hollow structure. The lower end of the direct drive motor 14 is the rotor, and the rotor is connected to the connecting plate 19. The lower end of the photoelectric slip ring 18 is the rotor, and the rotor part of the photoelectric slip ring 18 is fixed on the circular plate 21.
[0032] Specifically, the direct drive motor 14 adopts a hollow structure, with the photoelectric slip ring 18 passing through its hollow hole, forming a nested layout where the motor wraps around the slip ring. Simultaneously, the core components, including the direct drive motor 14, photoelectric slip ring 18, and rotating frame 4, are suspended sequentially from top to bottom below the fixed plate 6, forming a vertically stacked design. This structural arrangement eliminates the need for additional lateral support space for each component, and the recessed installation of the photoelectric slip ring 18 further reduces its vertical height, effectively minimizing the overall space required and making it suitable for space-constrained scenarios.
[0033] The direct-drive motor 14 is rigidly connected to the rotating frame 4 via the connecting plate 19, eliminating the intermediate transmission components in traditional rotating mechanisms and avoiding rotational errors caused by transmission backlash. Simultaneously, the rotor of the photoelectric slip ring 18 is fixed to the rotor of the direct-drive motor 14 via the circular plate 21 and connecting pipe 20, ensuring synchronous rotation of the slip ring and the rotating frame 4 and reducing relative sway. This rigid linkage structure of the direct-drive motor 14, the rotating frame 4, and the slip ring rotor significantly improves the stability and accuracy of the rotation process, ensuring imaging quality.
[0034] Specifically, the stator and rotor of the direct-drive motor 14: The stator is fixed below the fixed plate 6 and is the fixed part of the motor. It generates a rotating magnetic field through electromagnetic induction to provide driving torque for the rotor. The rotor is rigidly connected to the connecting plate 19 and rotates under the action of the magnetic field generated by the stator. It directly drives the connecting plate 19, the rotating frame 4, and the X-ray source 3 and detector 11 mounted on the rotating frame 4 to rotate synchronously, realizing a 360° rotational scan around the object to be inspected 2. It is the actuator of the rotational motion.
[0035] The stator and rotor of the photoelectric slip ring 18: The stator is blocked and fixed by the stop plate 8 and does not move with the rotating parts. It is used to connect the external power supply and signal processing system and is the input end of energy and signal. The rotor is linked to the rotor of the direct drive motor 14 through the circular plate 21 and the connecting pipe 20, and rotates synchronously with the rotating frame 4. One end of the rotor is connected to the circuit of the X-ray source 3 and the detector 11, and the other end is in contact with the stator through the internal conductive / light guiding structure. During the rotation, it continuously transmits the electrical energy and photoelectric signals input from the stator to the X-ray source 3 and the detector 11 on the rotating side.
[0036] Both have fixed stators and rotating rotors, and they maintain synchronous rotation through a mechanical structure. This not only enables the transmission of rotational power but also ensures the continuous transmission of energy and signals, making them the core components for the normal operation of the mechanism.
[0037] like Figure 4 and Figure 6 As shown, the upper end of the connecting plate 19 is fixedly connected to the direct drive motor 14, and the lower end of the connecting plate 19 is fixedly connected to the rotating frame 4 and the top surface of the connecting pipe 20. The lower end of the connecting pipe 20 is connected to the circular plate 21, and several fixing pipes 22 are spaced apart at the lower end of the circular plate 21. The upper end of the fixing pipe 22 is connected to the circular plate 21, and the lower end of the fixing pipe 22 is connected to the protective cover 16, thus connecting the protective cover 16 and the circular plate 21 through the fixing pipes 22.
[0038] Specifically, aesthetics and safety are achieved through a wiring concealment structure. The rotating frame 4 adopts a rectangular tube structure with a central opening, allowing the wiring of the X-ray source 3 and detector 11 to pass through the inside of the rectangular tube. Simultaneously, cover plates are fixed at the top and bottom of the rotating frame 4. Together with the protective cover 16, which is connected to the circular plate 21 and slip ring rotor via four fixed tubes 22, the optical fiber output lines of the photoelectric slip ring 18 are completely enclosed inside. This design eliminates any exposed wiring on the outside, avoiding the risk of wiring entanglement or damage, and also enhancing the overall aesthetics of the structure.
[0039] The overall structure is suspended from the top of the equipment system by the fixing plate 6, eliminating the need for traditional fixed base support, reducing dependence on ground space, and is especially suitable for working conditions where large objects to be inspected cannot be moved and the equipment needs to be flexibly adapted to the inspection scenario, thus expanding the application range of the equipment.
[0040] A radiation source assembly is mounted at one end of the rotating frame 4, and a detector assembly is mounted at the other end. A photoelectric slip ring 18 serves as a medium to provide power input and photoelectric signal transmission for both the radiation source assembly and the detector assembly. Figure 5 As shown, the radiation source assembly includes an adjustment plate 24 and a radiation source 3. One end of the adjustment plate 24 is connected to the rotating frame 4, and the other end of the adjustment plate 24 is connected to the radiation source 3.
[0041] Specifically, the adjustment plate 24 is installed between the rotating frame 4 and the radiation source 3. The adjustment plate 24 is used to adjust the angle of radiation source 3.
[0042] Specifically, X-ray source 3 is a current technology. X-ray source 3 is a device that generates penetrating X-rays. Its core function is to emit high-energy X-ray beams that penetrate the object being inspected. In CT imaging, the X-rays emitted by X-ray source 3 will be attenuated to varying degrees due to the different densities and material structures inside the object, providing the original signal for subsequent imaging.
[0043] The detector assembly includes a detector side plate 10, a detector back plate 12, a detector base plate 13, and a detector 11, which is mounted on the detector back plate 12. Detector side plates 10 are provided on both sides of the detector back plate 12, and the detector base plate 13 is provided at the lower end of the detector back plate 12. The detector 11 is fixedly mounted on the rotating frame 4 by being wrapped by the detector back plate 12, the detector side plates 10, and the detector base plate 13.
[0044] Specifically, detector 11 is a prior art device that receives radiation signals after they have been attenuated by an object. It converts the received radiation energy into electrical signals (such as digital signals) and transmits them to a data processing system. Its function is to accurately capture radiation attenuation information as the raw data basis for CT image reconstruction.
[0045] The rotating frame 4 drives the X-ray source 3 of the X-ray source assembly to rotate, which in turn causes the X-ray source 3 to rotate around the object under test 2. The X-ray source 3 and the detector 11 are respectively installed at both ends of the rotating frame 4, symmetrically distributed. During operation, the rotating frame 4 drives the X-ray source 3 and the detector 11 to rotate synchronously around the object under test 2. The X-ray source 3 continuously emits X-rays that penetrate the object, and the detector 11 synchronously receives the attenuated X-ray signal on the opposite side. By collecting multi-angle X-ray attenuation data during the rotation, a tomographic image of the internal structure of the object is finally formed through computer algorithms, realizing non-destructive testing and imaging.
[0046] A first cover plate 5 is provided at one end of the upper part of the rotating frame 4, and a second cover plate 9 is provided at the other end of the upper part; a third cover plate 15 is provided at one end of the lower part of the rotating frame 4, and a fourth cover plate 17 is provided at the other end of the lower part.
[0047] Specifically, the cover plate is fixedly connected to the rotating frame 4, which can enhance the overall structural strength and rigidity of the rotating frame 4. When the rotating frame 4 rotates at high speed with the direct drive motor 14, the cover plate can reduce the deformation or vibration of the rotating frame 4, improve the overall rotation stability and accuracy, and provide structural protection for the stable operation of the radiation source 3 and the detector 11.
[0048] The cover plate conceals the wiring and connecting components inside the rotating frame 4, making the external structure of the rotating mechanism simpler and neater, and improving the overall aesthetics of the equipment. In addition, the cover plate also provides a certain degree of safety protection, preventing external objects from accidentally entering the rotating area and colliding with internal components, while also preventing operators from directly contacting rotating components or wiring, thus improving the safety of equipment operation.
[0049] It also includes a testing table 1, which is located at the lower end of the rotating frame 4, and the part to be tested 2 is placed on the testing table 1.
[0050] Specifically, the testing platform 1 serves as a support platform for the test piece 2, providing it with a stable placement space and ensuring that the test piece 2 remains fixed during the testing process. Because this invention employs a suspended design, the rotating frame 4 drives the X-ray source 3 and detector 11 to rotate around the testing platform 1 and the test piece 2. At this time, the stability of the testing platform 1 directly affects the testing accuracy, preventing displacement or shaking of the test piece 2 during the rotation and scanning of the X-ray source 3 and detector 11. This ensures that the X-ray beam can stably penetrate the test piece 2 from multiple angles, allowing the detector 11 to accurately receive attenuated signals from different directions, providing reliable raw data for subsequent CT image reconstruction.
[0051] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.
Claims
1. A suspended rotary mechanism for CT imaging, characterized in that, The device includes a fixed plate, a direct-drive motor, a photoelectric slip ring, a connecting plate, and a rotating frame. The fixed plate is fixed to the top of the equipment, and a protective plate is installed on the fixed plate. A stop bar is provided on the protective plate. A stop plate is provided on the stop bar, and a photoelectric slip ring is provided at the lower end of the stop plate. The stop plate is used to prevent the stator rotation of the photoelectric slip ring. The direct-drive motor is installed at the lower end of the fixed plate. The direct-drive motor has a hollow structure, and the photoelectric slip ring is located inside the hollow structure. The lower end of the direct-drive motor is the rotor, and the rotor is connected to the connecting plate. The lower end of the photoelectric slip ring is the rotor, and the rotor part of the photoelectric slip ring is fixed to a circular plate.
2. A suspended rotary mechanism for CT imaging as claimed in claim 1, wherein, The upper end of the connecting plate is fixedly connected to the direct drive motor, and the lower end of the connecting plate is fixedly connected to the top surface of the rotating frame and the connecting pipe.
3. A suspended rotating mechanism for CT imaging as claimed in claim 2, wherein, The lower end of the connecting pipe is connected to the circular plate, and several fixed pipes are spaced apart at the lower end of the circular plate.
4. A suspended rotary mechanism for CT imaging as claimed in claim 3, wherein, The upper end of the fixing tube is connected to the circular plate, and the lower end of the fixing tube is connected to the protective cover. The protective cover and the circular plate are connected by the fixing tube.
5. A suspended rotary mechanism for CT imaging as defined in claim 1, wherein, The X-ray source assembly is installed at one end of the rotating frame, and the detector assembly is installed at the other end of the rotating frame. The photoelectric slip ring serves as a medium to provide power input and photoelectric signal transmission for the X-ray source assembly and the detector assembly.
6. A suspended rotary mechanism for CT imaging as claimed in claim 5, wherein, The radiation source assembly includes an adjustment plate and a radiation source. One end of the adjustment plate is connected to a rotating frame, and the other end of the adjustment plate is connected to the radiation source.
7. A suspended rotating mechanism for CT imaging as defined in claim 5, wherein, The detector assembly includes a detector side plate, a detector back plate, a detector base plate, and a detector, which is mounted on the detector back plate.
8. A suspended rotary mechanism for CT imaging as claimed in claim 7, wherein, The detector back plate has detector side plates on both sides and a detector base plate at the lower end of the detector back plate. The detector is fixedly mounted on the rotating frame by the detector back plate, detector side plates and detector base plate.
9. A suspended rotary mechanism for CT imaging as defined in claim 1, wherein, The upper end of the rotating frame is provided with a first cover plate, and the other end of the upper frame is provided with a second cover plate; the lower end of the rotating frame is provided with a third cover plate, and the other end of the lower frame is provided with a fourth cover plate.
10. A suspended rotary mechanism for CT imaging as defined in claim 1, wherein, It also includes a testing table, which is located at the lower end of the rotating frame, and the part to be tested is placed on the testing table.