Bearing assembly for CT tube, CT tube and CT equipment

Abstract

The present disclosure provides a bearing assembly for a CT tube, a CT tube and a CT device, wherein the bearing assembly comprises: an outer bearing sleeve having a cavity with an opening; a rotating shaft having a first end and a second end opposite to each other, the second end being located in the cavity, the first end being located outside the cavity and being used to connect to a rotor in the CT tube, so as to rotate relative to the outer bearing sleeve under the drive of the rotor; a first bearing sleeve being sleeved on the rotating shaft and located outside the cavity, the first bearing sleeve being fixedly connected to the outer bearing sleeve, and a plurality of first rolling bodies being arranged between the first bearing sleeve and the rotating shaft; a second bearing sleeve being sleeved on the rotating shaft and located in the cavity, a plurality of second rolling bodies being arranged between the second bearing sleeve and the rotating shaft; a base being sleeved on the rotating shaft and located outside the cavity, and being connected to the first bearing sleeve; a state detection component being arranged on the base, at least being used to detect the running state of the rotating shaft. The above scheme helps to reduce the maintenance cost of the CT tube and improve the reliability of the CT tube.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of medical equipment, and in particular to a bearing assembly for a CT tube, a CT tube, and a CT device. Background Art

[0002] Computed Tomography (CT) is a medical imaging technology. CT imaging equipment (also called CT equipment) uses X-ray beams to perform layer-by-layer scans of the human body and uses computer processing to produce detailed images of the body's internal structures. The CT tube is a key component in the CT equipment, which is used to generate X-ray beams to detect the patient's body tissues. The performance of the CT tube directly affects the clarity of the resulting CT image and the stability of the CT equipment.

[0003] In the CT tube, the anode is an important part for generating X-rays. When electrons are accelerated from the cathode and hit the anode, a large amount of heat is generated. In addition, during the operation of the CT equipment, the CT tube itself has to withstand dozens of times the acceleration of gravity, and the operating conditions are extremely harsh. The bearings used in the traditional anode structure design are mostly ball bearings. Under the above-mentioned extremely harsh working conditions, the bearings have problems such as easy wear, high maintenance costs, and limited service life. The CT tube is set in the CT equipment, and the bearing is set in the CT tube. Due to the structural design of the CT equipment and the CT tube, the bearing is not easy to see from the outside. When the CT equipment or the CT tube fails, it is not easy to locate the cause of the failure, resulting in high maintenance costs. Summary of the invention

[0004] The technical problem solved by the embodiments of the present invention is that when a CT device or a CT tube fails, it is difficult to locate the cause of the failure, resulting in high maintenance costs.

[0005] To solve the above technical problems, an embodiment of the present invention provides a bearing assembly for a CT tube, comprising: an outer bearing sleeve, having a cavity with an opening; a rotating shaft, having a first end and a second end opposite to each other, the second end being located in the cavity, and the first end being located outside the cavity and used to connect to a rotor in the CT tube, so as to rotate relative to the outer bearing sleeve under the drive of the rotor; a first bearing sleeve, sleeved on the rotating shaft and located outside the cavity, the first bearing sleeve being fixedly connected to the outer bearing sleeve, and a plurality of first rolling bodies being arranged between the first bearing sleeve and the rotating shaft; a second bearing sleeve, sleeved on the rotating shaft and located in the cavity, a plurality of second rolling bodies being arranged between the second bearing sleeve and the rotating shaft; a base, sleeved on the rotating shaft and located outside the cavity, the base being connected to the first bearing sleeve; a state detection component, arranged on the base, the state detection component being at least used to detect the running state of the rotating shaft.

[0006] Optionally, the first bearing sleeve is located between the outer bearing sleeve and the base, and the first rolling element is closer to the base than the outer bearing sleeve.

[0007] Optionally, the base is fixedly connected to an end surface of the first bearing sleeve facing away from the outer bearing sleeve.

[0008] Optionally, the outer surface of the outer bearing sleeve, the outer surface of the first bearing sleeve and the outer surface of the base are flush.

[0009] Optionally, a mounting groove is provided on the base, and the mounting groove is used to install the status detection component.

[0010] Optionally, the state detection component includes at least one of the following: an acceleration sensor, a temperature sensor, and a rotation speed sensor.

[0011] Optionally, the first end of the rotating shaft has an annular protrusion, which is used to connect the rotor, and the end surface of the annular protrusion facing the base is provided with a mark. When the status detection component includes the speed sensor, the position of the first mounting groove for installing the speed sensor is adapted to the position of the mark, and the opening of the first mounting groove faces the end surface of the annular protrusion.

[0012] Optionally, there is a non-zero interval between the annular protrusion and the base.

[0013] Optionally, a wiring groove is provided on the end surface of the base facing the first bearing sleeve, and the wiring groove is used to accommodate a wiring harness of the status detection component.

[0014] Optionally, the bearing assembly further includes: a washer assembly, which is sleeved on the rotating shaft, located in the cavity, and located between the first bearing sleeve and the second bearing sleeve.

[0015] Optionally, the first bearing sleeve is located between the base and the outer bearing sleeve.

[0016] Optionally, the gasket assembly includes: a first gasket, the first gasket having a bayonet, and the bayonet is used to provide an entrance through the rotating shaft.

[0017] Optionally, the gasket assembly further includes: an annular second gasket sleeved on the rotating shaft.

[0018] Optionally, the bearing assembly for the CT tube further includes: an elastic member, which is located in the cavity and abuts against the second end of the rotating shaft.

[0019] Optionally, the bearing assembly for a CT tube further includes: a processing device, which is disposed on the base and connected to the state detection component.

[0020] The present invention also provides a CT tube, comprising any one of the above-mentioned bearing assemblies for a CT tube.

[0021] The present invention also provides a CT device, comprising any one of the above-mentioned bearing assemblies for CT tubes, or the above-mentioned CT tubes.

[0022] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0023] The rotating shaft has a first end and a second end opposite to each other, the second end of the rotating shaft is located in the cavity of the outer bearing sleeve, and the first end of the rotating shaft is located outside the cavity and is used to connect the rotor in the CT tube, so as to rotate relative to the outer bearing sleeve under the drive of the rotor. The first bearing sleeve is sleeved on the rotating shaft and located outside the cavity, and is fixedly connected to the outer bearing sleeve. The second bearing sleeve is sleeved on the rotating shaft and located in the cavity. The base is sleeved on the rotating shaft and located outside the cavity, and the base is connected to the first bearing sleeve. A state detection component is arranged on the base, and the state detection component is at least used to detect the running state of the rotating shaft. The state detection component is integrated into the bearing assembly via the base, and some components such as the first bearing sleeve are exposed outside the cavity of the outer bearing sleeve, so that the components in the bearing assembly have better measurability, which helps the state detection component to better detect the running state of the bearing assembly. The obtained running state data has a high degree of fit with the actual situation of the bearing assembly, which can more realistically reflect the actual running situation of the bearing assembly, thereby helping to improve the accuracy of the fault determination of the bearing assembly. In this way, at least the operating state of the bearing assembly can be known by detecting the operating state of the shaft, which helps to realize early warning or prediction of faults of the bearing assembly, so as to improve the reliability of the CT tube and CT equipment. In addition, when a CT tube fails, it can be quickly determined whether it is a failure of the bearing assembly based on the operating state of the shaft, which helps to troubleshoot and locate the cause of the CT tube failure, improve maintenance efficiency, and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of a bearing assembly for a CT tube in an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 Exploded diagram of

[0026] Figure 3 is a schematic diagram of a state detection component installed on a base;

[0027] Figure 4 yes Figure 3 Exploded diagram. DETAILED DESCRIPTION

[0028] As mentioned above, in the CT tube, the anode is an important part for generating X-rays. When electrons are accelerated from the cathode and hit the anode, a large amount of heat is generated. In addition, during the operation of the CT equipment, the CT tube itself has to withstand dozens of times the acceleration of gravity, and the operating conditions are extremely harsh. The bearings used in the traditional anode structure design are mostly ball bearings. Under the above-mentioned extremely harsh working conditions, the bearings have problems such as easy wear, high maintenance costs, and limited service life. The CT tube is set in the CT equipment, and the bearing is set in the CT tube. Due to the structural design of the CT equipment and the CT tube, the bearing is not easy to see from the outside. When the CT equipment or the CT tube fails, it is not easy to locate the cause of the failure, resulting in high maintenance costs.

[0029] To solve the above problems, in an embodiment of the present invention, the rotating shaft has a first end and a second end opposite to each other, the second end of the rotating shaft is located in the cavity of the outer bearing sleeve, and the first end of the rotating shaft is located outside the cavity and is used to connect the rotor in the CT tube, so as to rotate relative to the outer bearing sleeve under the drive of the rotor. The first bearing sleeve is sleeved on the rotating shaft and located outside the cavity, and is fixedly connected to the outer bearing sleeve. The second bearing sleeve is sleeved on the rotating shaft and located in the cavity. The base is sleeved on the rotating shaft and located outside the cavity, and the base is connected to the first bearing sleeve. A state detection component is arranged on the base, and the state detection component is at least used to detect the running state of the rotating shaft. The state detection component is integrated into the bearing assembly via the base, and some components such as the first bearing sleeve are exposed outside the cavity of the outer bearing sleeve, so that the components in the bearing assembly have better measurability, which helps the state detection component to better detect the running state of the bearing assembly. The obtained running state data has a high degree of fit with the actual situation of the bearing assembly, which can more realistically reflect the actual running situation of the bearing assembly, thereby helping to improve the accuracy of the fault determination of the bearing assembly. In this way, at least the operating state of the bearing assembly can be known by detecting the operating state of the shaft, which helps to realize early warning or prediction of faults of the bearing assembly, so as to improve the reliability of the CT tube and CT equipment. In addition, when a CT tube fails, it can be quickly determined whether it is a failure of the bearing assembly based on the operating state of the shaft, which helps to troubleshoot and locate the cause of the CT tube failure, improve maintenance efficiency, and reduce maintenance costs.

[0030] In order to make the above-mentioned purposes, features and beneficial effects of the embodiments of the present invention more obvious and understandable, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] The present invention provides a bearing assembly for a CT tube. The bearing assembly for a CT tube (hereinafter referred to as the bearing assembly) can be used to drive the anode of the CT tube to rotate. Figure 1 is a structural schematic diagram of a bearing assembly for a CT tube in an embodiment of the present invention; Figure 2 yes Figure 1 Exploded diagram of Figure 3 is a schematic diagram of a state detection component installed on a base; Figure 4 yes Figure 3 The following is an exploded diagram of Figures 1 to 4 The specific structure of the bearing assembly is described.

[0032] In a specific implementation, the bearing assembly 100 includes: an outer bearing sleeve 10, a rotating shaft 20, a base 30, a state detection component 40, a first bearing sleeve 51, a plurality of first rolling elements 52, a second bearing sleeve 53, and a plurality of second rolling elements 54. The outer bearing sleeve 10 has a cavity 11 with an opening. The rotating shaft 20 has a first end 21 and a second end 22 opposite to each other, and the first end 21 is located outside the cavity 11 and is used to connect the rotor in the CT tube. Driven by the rotor, the rotating shaft 20 rotates relative to the outer bearing sleeve 10. The first bearing sleeve 51 is sleeved on the rotating shaft 20 and is located outside the cavity 11. The first bearing sleeve 51 is fixedly connected to the outer bearing sleeve 10, and a plurality of first rolling elements 52 are arranged between the first bearing sleeve 51 and the rotating shaft 20. The second bearing sleeve 53 is sleeved on the rotating shaft 20 and is located in the cavity 11. A plurality of second rolling elements 54 are arranged between the second bearing sleeve 53 and the rotating shaft 20. The base 30 is sleeved on the rotating shaft 20 and is located outside the cavity 11 . The base 30 is connected to the first bearing sleeve 51 . The state detection component 40 is disposed on the base 30 . The state detection component 40 is at least used to detect the running state of the rotating shaft 20 .

[0033] In some embodiments, the rotor is connected to an anode target in a CT tube.

[0034] As can be seen from the above, the rotating shaft 20 has a first end 21 and a second end 22 opposite to each other. The second end 22 of the rotating shaft 20 is located in the cavity 11 of the outer bearing sleeve 10, and the first end 21 of the rotating shaft 20 is located outside the cavity 11 and is used to connect the rotor in the CT tube, so as to rotate relative to the outer bearing sleeve 10 under the drive of the rotor. The first bearing sleeve 51 is sleeved on the rotating shaft 20 and is located outside the cavity 11, and is fixedly connected to the outer bearing sleeve 10. The second bearing sleeve 53 is sleeved on the rotating shaft 20 and is located in the cavity 11. The base 30 is sleeved on the rotating shaft 20 and is located outside the cavity 11, and the base 30 is connected to the first bearing sleeve 51. A state detection component 40 is provided on the base 30, and the state detection component 40 is at least used to detect the operating state of the rotating shaft 20. In this way, the operating state of the bearing assembly 100 can be known by detecting the operating state of the rotating shaft 20, which helps to realize fault warning or prediction of the bearing assembly 100, so as to improve the reliability of the CT tube and the CT equipment. In addition, when the CT tube fails, it can be quickly determined whether the bearing assembly 100 fails based on the operating state of the rotating shaft 20, which helps to troubleshoot and locate the cause of the CT tube failure, improve maintenance efficiency, and reduce maintenance costs. Furthermore, the status detection component 40 is integrated into the bearing assembly 100 via the base 30, and the first bearing sleeve 51 is located outside the cavity 11, that is, part of the structure in the bearing assembly 100 (such as the first bearing sleeve 51) is exposed outside the outer bearing sleeve 10, so that the components in the bearing assembly have better measurability, and it is convenient for the status detection component 40 to detect the operating status of the rotating shaft 20 and related components in the bearing assembly 100. The obtained operating status data has a high degree of fit with the actual situation of the bearing assembly 100, can more realistically reflect the actual operating conditions of the bearing assembly 100, and help to improve the accuracy of fault determination of the bearing assembly 100.

[0035] In addition, the design of the built-in state detection component 40 in the bearing assembly 100 in the present application can make the structure of the bearing assembly 100 compact, which can directly and accurately detect the operating state of the bearing assembly 100 without affecting the normal operation of the CT tube. The state detection component 40 is integrated on the base 30, and the base 30 is installed on the first bearing sleeve 51, which protects the integrity of the bearing assembly 100, avoids stress concentration, ensures the strength of each component in the bearing assembly 100 (such as the shaft 20, the first bearing sleeve 51, etc.), and takes into account the performance and service life of the bearing assembly 100.

[0036] In a specific implementation, the first bearing sleeve 51 and the second bearing sleeve 53 are respectively located near the two ends of the rotating shaft 20. The first bearing sleeve 51 is closer to the first end 21 than the second end 22, and the second bearing sleeve 53 is closer to the second end 22 than the first end 21. The plurality of first rolling bodies 52 and the plurality of second rolling bodies 54 can support multiple points at both ends of the rotating shaft 20, and improve the stability of the rotating shaft 20 when the rotating shaft 20 rotates.

[0037] In a specific implementation, the first bearing sleeve 51 and the second bearing sleeve 53 are hollow cylindrical. The inner diameter of the first bearing sleeve 51 and the inner diameter of the second bearing sleeve 53 are both larger than the outer diameter of the rotating shaft 20 .

[0038] In some embodiments, a first receiving groove 24 is provided on the rotating shaft 20, and a second receiving groove 511 is provided on the first bearing sleeve 51. The opening of the first receiving groove 24 faces the second receiving groove 511, and the opening of the second receiving groove 511 faces the first receiving groove 24. The space formed by the first receiving groove 24 and the second receiving groove 511 is used to accommodate the first rolling body 52. ​​There is a non-zero gap between the inner wall of the first bearing sleeve 51 and the outer surface of the rotating shaft 20, that is, the inner wall of the first bearing sleeve 51 does not contact the outer surface of the rotating shaft 20.

[0039] In some non-limiting embodiments, the first rolling element 52 may be a ball.

[0040] In some embodiments, a third receiving groove 25 is provided on the rotating shaft 20, and a fourth receiving groove is provided on the second bearing sleeve 53, wherein the opening of the third receiving groove 25 faces the fourth receiving groove, and the opening of the fourth receiving groove faces the third receiving groove 25. The space formed by the third receiving groove 25 and the fourth receiving groove is used to accommodate the second rolling element 54. There is a non-zero gap between the inner wall of the second bearing sleeve 53 and the outer surface of the rotating shaft 20, that is, the inner wall of the second bearing sleeve 53 does not contact the outer surface of the rotating shaft 20.

[0041] In some non-limiting embodiments, the second rolling element 54 may be a ball.

[0042] In the application, the rotating shaft 20 is provided with a first receiving groove 24, the first bearing sleeve 51 is provided with a second receiving groove 511, and the first rolling body 52 is located in the space formed by the cooperation of the first receiving groove 24 and the second receiving groove 511. The rotating shaft 20 is provided with a third receiving groove 25, the second bearing sleeve 53 is provided with a fourth receiving groove, and the second rolling body 54 is located in the space formed by the cooperation of the third receiving groove 25 and the fourth receiving groove. With this structural design, the design of the present application removes the retaining frame and the inner ring while realizing the rotation of the rotating shaft 20 relative to the first bearing sleeve 51 and the second bearing sleeve 53, compared with the conventional bearing design, which can simplify the structure of the bearing assembly, reduce the number of parts, reduce costs, and make the heat dissipation path of the bearing assembly 100 more direct, optimizing the heat dissipation performance. At the same time, the structural stability is enhanced to better adapt to the high speed requirements in the CT tube.

[0043] In a specific implementation, the first bearing sleeve 51 is located between the outer bearing sleeve 10 and the base 30 .

[0044] In a specific implementation, the first bearing sleeve 51 and the outer bearing sleeve 10 can be fixedly connected in a variety of ways. In some non-limiting embodiments, the first bearing sleeve 51 and the outer bearing sleeve 10 are fixedly connected by welding. For example, the first bearing sleeve 51 and the outer bearing sleeve 10 are fixedly connected by argon arc welding. The first bearing sleeve 51 and the outer bearing sleeve 10 are fixedly connected by welding. Compared with the existing connection method of axial limiting by a retaining spring, the welding method used in the present application can not only improve the assembly accuracy, but also facilitate the assembly operation.

[0045] In some non-limiting embodiments, the first rolling element 52 is closer to the base 30 than the outer bearing sleeve 10. That is, the first rolling element 52 is disposed at a position away from the welding edge of the first bearing sleeve 51 and the outer bearing sleeve 10. The welding edge position refers to the position of the welding point. In this way, the oxidation of the first rolling element 52 and the problem of excessive temperature (also referred to as overheating) caused by the high temperature when the first bearing sleeve 51 and the outer bearing sleeve 10 are welded can be avoided.

[0046] In some non-limiting embodiments, the base 30 and the first bearing sleeve 51 are fixedly connected by electron beam welding. Further, the base 30 and the first bearing sleeve 51 are fixedly connected by vacuum electron beam welding. In this way, the installation accuracy and convenience between the base 30 and the first bearing sleeve 51 can be improved.

[0047] In some embodiments, the base 30 is fixedly connected to the end surface 512 of the first bearing sleeve 51 away from the outer bearing sleeve 10. In this way, a relatively sufficient space can be provided for installing the state detection component 40, and more measurement angles can be provided for the state detection component 40, so that the state detection component 40 can detect the running state of the rotating shaft 20.

[0048] Furthermore, the outer surface of the outer bearing sleeve 10, the outer surface of the first bearing sleeve 51 and the outer surface of the base 30 are flush. In this way, the overall appearance of the bearing assembly 100 can be made consistent, which helps to achieve the precise integration of the state detection component 40 and related components in the bearing assembly 100, and ensure the stability of the overall structure.

[0049] It is understandable that the base 30 may also be connected to the first bearing sleeve 51 in other ways. For example, the base 30 is fixed to the outer surface of the first bearing sleeve 51, that is, it is sleeved on the outer surface of the first bearing sleeve 51.

[0050] In a specific implementation, the base 30 is annular in shape, and the inner diameter of the annular base 30 is larger than the outer diameter of the rotating shaft 20 to prevent the base 30 from interfering with the rotation of the rotating shaft 20 .

[0051] In a specific implementation, a mounting groove 33 is provided on the base 30 , and the mounting groove 33 is used to mount the state detection component 40 . The specific shape of the mounting groove 33 is adapted to the shape of the state detection component 40 .

[0052] In a specific implementation, the state detection component 40 includes at least one of the following: an acceleration sensor, a temperature sensor, and a rotation speed sensor. The running state of the rotating shaft 20 may include an acceleration state, a temperature state, a rotation speed state, etc. The acceleration sensor is used to detect the acceleration of the rotating shaft 20.

[0053] The temperature sensor is used to detect the temperature of the rotating shaft 20 or the temperature of the working environment of the rotating shaft 20. The temperature of the rotating shaft 20 can be used as the temperature of the bearing assembly 100. It should be noted that the temperature sensor estimates the temperature of the rotating shaft 20 by detecting the working environment temperature of the rotating shaft 20, or the base 30 and the rotating shaft 20 are heat-conducted, and the temperature sensor estimates the temperature of the rotating shaft 20 by detecting the temperature of the base 30. The connection of the base 30 to the first bearing sleeve 51 can improve the heat conduction effect between the base 30 and the first bearing sleeve 51, and improve the accuracy of the temperature detection of the bearing assembly 100.

[0054] Since the rotating shaft 20 rotates relative to the outer bearing sleeve 10, the base 30 is connected to the first bearing sleeve 51, and the first bearing sleeve 51 is fixed to the outer bearing sleeve 10, and the speed sensor is fixed to the base 30, the rotating shaft 20 rotates relative to the speed sensor when rotating. Therefore, the speed sensor can measure the speed of the rotating shaft 20.

[0055] In a specific implementation, the first end 21 of the rotating shaft 20 has an annular protrusion 23, and the annular protrusion 23 is used to connect the rotor. The end surface 231 of the annular protrusion 23 facing the base 30 is provided with a mark. When the state detection component 40 includes the speed sensor, the position of the first mounting groove for mounting the speed sensor is adapted to the position of the mark, and the opening of the first mounting groove faces the end surface 231 of the annular protrusion 23.

[0056] In some embodiments, the mark can be a notch provided on the annular protrusion 23. The mark can also be a coating on the end surface 231 of the annular protrusion 23, and the color of the coating is different from the color of the end surface 231 of the annular protrusion 23, such as a black coating. The mark can also be a reflective strip provided on the end surface 231 of the annular protrusion 23. When the bearing assembly 100 is working, the detection of the mark by the speed sensor is recorded, and the speed of the rotating shaft 20 is determined by the recorded detection of the mark. Based on the speed detection result of the rotating shaft 20, it can be determined whether the bearing assembly 100 is stuck or other abnormal conditions.

[0057] In a specific implementation, there is a non-zero interval between the annular protrusion 23 and the base 30. In this way, the base 30 can be prevented from interfering with the rotation of the shaft 20, ensuring the normal operation of the shaft 20 while providing a relatively sufficient measurement space for the state detection component 40 to perform motion state detection.

[0058] In a specific implementation, the end surface 32 of the base 30 facing the first bearing sleeve 51 is provided with a wiring groove 31. The wiring groove 31 is used to accommodate the wiring harness 41 of the state detection component 40. Accommodating the wiring harness 41 of the state detection component 40 in the wiring groove 31 can avoid the influence of the wiring harness 41 on the operation of the rotating shaft 20.

[0059] In some non-limiting embodiments, after the base 30 is connected to the first bearing sleeve 51 , the end surface 512 of the first bearing sleeve 51 shields the wiring groove 31 to prevent the wiring harness 41 from being exposed to the external environment.

[0060] Furthermore, a limit block may be provided at the edge of the wiring groove 31 , and the limit block is used to confine the wiring harness 41 within the wiring groove 31 to prevent the wiring harness 41 from escaping from the wiring groove 31 , thereby preventing the wiring harness 41 from interfering with the rotation of the shaft 20 .

[0061] The bearing assembly 100 further includes a washer assembly 60 . The washer assembly 60 is sleeved on the rotating shaft 20 , located in the cavity 11 , and located between the first bearing sleeve 51 and the second bearing sleeve 53 .

[0062] In a specific implementation, the gasket assembly 60 includes: a first gasket 61. The first gasket 61 has a bayonet 611, and the bayonet 611 is used to provide an entrance through the rotating shaft 20.

[0063] The washer assembly 60 further includes: an annular second washer 62 sleeved on the rotating shaft 20 .

[0064] In a specific implementation, the washer assembly 60 can be provided to facilitate the installation of the first bearing sleeve 51 , the plurality of first rolling elements 52 , the second bearing sleeve 53 , and the plurality of second rolling elements 54 .

[0065] In a specific implementation, the bearing assembly 100 further includes an elastic member 70. The elastic member 70 is located in the cavity 11 and abuts against the second end 22 of the rotating shaft 20. The elastic member 70 can absorb the vibration of the rotating shaft 20 during the rotation of the rotating shaft 20, and buffer the force between the rotating shaft 20 and the outer bearing sleeve 10, thereby improving the running stability of the rotating shaft 20.

[0066] In some embodiments, the elastic member 70 may include a spring washer 71 and a spring 72. The spring washer 71 is located between the second bearing sleeve 53 and the spring, and the spring 72 is located at the bottom of the cavity 11.

[0067] The bearing assembly 100 for a CT tube further includes a processing device 80. The processing device 80 is disposed on the base 30 and connected to the state detection component 40. The processing device 80 is used to receive the operating state data collected by the state detection component 40 and process the received operating state data. The processing device 80 may be a central processing unit.

[0068] The processing device 80 can send the operating status data to the control system by wireless communication. The operating status data can be used to evaluate the operating status of the rotating shaft 20. The evaluation result can be used to evaluate the service status of the bearing assembly 100, identify the abnormal working condition of the bearing assembly 100, and provide early warning prompts, so that potential fault signs can be discovered in time, and early warning can be provided before the fault occurs, thereby reducing the probability of sudden shutdown due to the failure of the bearing assembly 100 and improving the overall operating efficiency and reliability of the CT equipment. In addition, the evaluation result can also be used to adjust the operating status of the rotating shaft 20, such as adjusting the rotation speed of the rotating shaft 20, so as to optimize the operating status of the bearing assembly 100, which helps to extend the service life of the bearing assembly 100 and ensure the continuous and efficient operation of the CT equipment. Further, the processing device 80 can also provide maintenance prompts based on the operating status data, and the maintenance prompts help guide maintenance personnel to perform targeted maintenance operations on the bearing assembly 100.

[0069] The present invention also provides a CT tube, comprising any one of the above-mentioned bearing assemblies for a CT tube.

[0070] The present invention also provides a CT device, comprising any one of the above-mentioned bearing assemblies for CT tubes, or the above-mentioned CT tubes.

[0071] In a specific implementation, the bearing assembly in the CT tube or CT equipment adopts the bearing assembly 100 provided in any of the above embodiments. For the specific working principle and specific structure of the bearing assembly 100, please refer to the description in the above embodiments, which will not be repeated here.

[0072] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A bearing assembly for a CT tube, characterized in that: include: an outer bearing sleeve having a cavity with an opening; A rotating shaft having a first end and a second end opposite to each other, wherein the second end is located in the cavity, and the first end is located outside the cavity and is used to connect to a rotor in a CT tube so as to rotate relative to the outer bearing sleeve under the drive of the rotor; A first bearing sleeve, sleeved on the rotating shaft and located outside the cavity, the first bearing sleeve is fixedly connected to the outer bearing sleeve, and a plurality of first rolling bodies are arranged between the first bearing sleeve and the rotating shaft; A second bearing sleeve, sleeved on the rotating shaft and located in the cavity, wherein a plurality of second rolling elements are arranged between the second bearing sleeve and the rotating shaft; A base, sleeved on the rotating shaft and located outside the cavity, wherein the base is connected to the first bearing sleeve; A state detection component is arranged on the base, and the state detection component is used to detect the running state of the rotating shaft.

2. The bearing assembly for a CT tube according to claim 1, characterized in that: The first bearing sleeve is located between the outer bearing sleeve and the base, and the first rolling element is closer to the base than the outer bearing sleeve.

3. The bearing assembly for a CT tube according to claim 2, characterized in that: The base is fixedly connected to the end surface of the first bearing sleeve facing away from the outer bearing sleeve.

4. The bearing assembly for a CT tube according to claim 3, characterized in that: The outer surface of the outer bearing sleeve, the outer surface of the first bearing sleeve and the outer surface of the base are flush.

5. The bearing assembly for a CT tube according to claim 1, characterized in that: The base is provided with a mounting groove, and the mounting groove is used for mounting the state detection component.

6. The bearing assembly for a CT tube according to claim 5, characterized in that: The state detection component includes at least one of the following: an acceleration sensor, a temperature sensor, and a rotation speed sensor.

7. The bearing assembly for a CT tube according to claim 6, characterized in that: The first end of the rotating shaft has an annular protrusion, which is used to connect the rotor. The end surface of the annular protrusion facing the base is provided with a mark. When the state detection component includes the speed sensor, the position of the first mounting groove for installing the speed sensor is adapted to the position of the mark, and the opening of the first mounting groove faces the end surface of the annular protrusion.

8. The bearing assembly for a CT tube according to claim 7, characterized in that: There is a non-zero interval between the annular protrusion and the base.

9. The bearing assembly for a CT tube according to claim 1, characterized in that: The end surface of the base facing the first bearing sleeve is provided with a wiring groove, and the wiring groove is used to accommodate the wiring harness of the status detection component.

10. The bearing assembly for a CT tube according to claim 1, characterized in that: Also includes: The washer assembly is sleeved on the rotating shaft, located in the cavity, and located between the first bearing sleeve and the second bearing sleeve.

11. The bearing assembly for a CT tube according to claim 10, characterized in that: The gasket assembly comprises: A first gasket is provided with a bayonet, wherein the bayonet is used for providing an entrance through the rotating shaft.

12. The bearing assembly for a CT tube according to claim 11, characterized in that: The washer assembly further includes: an annular second washer sleeved on the rotating shaft.

13. The bearing assembly for a CT tube according to claim 1, characterized in that: Also includes: The elastic member is located in the cavity and abuts against the second end of the rotating shaft.

14. The bearing assembly for a CT tube according to claim 1, characterized in that: Also includes: The processing device is arranged on the base and connected with the state detection component.

15. A CT tube, characterized in that: The invention comprises a bearing assembly for a CT tube according to any one of claims 1 to 14.

16. A CT device, characterized in that: It comprises the bearing assembly for a CT tube according to any one of claims 1 to 14, or comprises the CT tube according to claim 15.

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