Rolling bearing fault diagnosis device based on digital twinning
By designing a rolling bearing fault diagnosis device based on digital twins, and using inner and outer abutments to fix bearings of different sizes, combined with sensors and computer models, the problem that existing devices cannot adapt to bearings of different sizes is solved, and higher diagnostic accuracy and versatility are achieved.
Patent Information
- Application Number
- CN202520774141.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-04-23
AI Technical Summary
Existing digital twin-based rolling bearing fault diagnosis devices cannot adapt to bearings of different sizes, resulting in insufficient data diversity and richness, and thus failing to perform effective fault diagnosis under different working conditions and application scenarios.
A rolling bearing fault diagnosis device based on digital twins was designed. Bearings of different sizes are fixed by inner and outer abutment blocks. Data is collected by speed sensors, vibration sensors and temperature sensors. A digital twin model is constructed using a data acquisition unit, a feature extraction unit and an analog computer to perform fault diagnosis.
It improves the accuracy and versatility of fault diagnosis for bearings of different sizes, reduces diagnostic errors, and can provide personalized fault diagnosis and maintenance suggestions to adapt to different working conditions and application scenarios.
Smart Images
Figure CN223955146U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of rolling bearing fault diagnosis device based on digital twin, specifically a rolling bearing fault diagnosis device based on digital twin. Background Technology
[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure their rotational accuracy. They can be classified according to the nature of friction: sliding bearings and rolling bearings; according to the shape of the rolling elements: mainly ball bearings and roller bearings; and according to the direction of the load: radial bearings and thrust bearings. They are widely used in all aspects of society, such as in industrial equipment like fans, pumps, motors, and chemical equipment; in transportation like automobiles, trains, and airplanes; and in many civilian fields such as home appliances, office equipment, and medical devices.
[0003] However, some existing rolling bearing fault diagnosis devices based on digital twins cannot fix and diagnose bearings of different sizes, which not only reduces the diversity and richness of their internal data, but also makes them unable to better adapt to bearing fault diagnosis under different working conditions and application scenarios.
[0004] Therefore, those skilled in the art have provided a rolling bearing fault diagnosis device based on digital twins to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this invention is to provide a rolling bearing fault diagnosis device based on digital twins to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A rolling bearing fault diagnosis device based on digital twins includes a fixed base; side support frames are fixedly connected to the upper left and right ends of the fixed base, and several electric push rods are fixedly connected to the inner side wall of the side support frames. A connecting plate is fixedly connected to one side of each electric push rod, and an outer abutment block is fixedly connected to one side of the connecting plate; a drive motor is fixedly connected to the upper middle of the fixed base, and a rotating shaft is fixedly connected to the output end of the drive motor. Several cylinders are fixedly connected to the upper left and right ends of the rotating shaft, and an inner abutment block is fixedly connected to one side of each cylinder.
[0008] As a further embodiment of this utility model, a limiting block is movably connected to the upper outer side of the rotating shaft, and the outer surface of the limiting block has several limiting grooves.
[0009] The outer side of the rotating shaft is provided with a bearing inner ring, and the outer side of the bearing inner ring is provided with a bearing outer ring.
[0010] The upper side left end of the bearing inner ring is provided with a speed sensor, the upper side front end of the bearing inner ring is provided with a vibration sensor, and the upper side right end of the bearing inner ring is provided with a temperature sensor.
[0011] The internal upper side left end of the side support frame is fixedly connected with a data acquisition unit, and the internal upper side right end of the side support frame is fixedly connected with a feature extraction unit.
[0012] The outer side upper end of the side support frame is fixedly connected with an analog computer.
[0013] Compared with the prior art, the utility model has the advantages that:
[0014] 1. The inner and outer abutting blocks can fix different size bearings and collect data, thereby increasing the diversity and richness of data, enabling the diagnostic model to learn more comprehensive fault features and patterns, improving the accuracy of fault diagnosis of different size bearings, enhancing the generalization ability of the diagnostic model through learning and training of various size bearing data, better adapting to bearing fault diagnosis under different working conditions and application scenarios, reducing diagnostic errors caused by bearing size differences, and enabling the device to provide personalized fault diagnosis and maintenance recommendations according to the running characteristics and fault patterns of different size bearings, making maintenance work more accurate and efficient, and further improving the versatility and practicality of the device. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 It is a structural schematic diagram of a rolling bearing fault diagnosis device based on digital twinning.
[0016] Fig. 2 It is a plan view of a rolling bearing fault diagnosis device based on digital twinning.
[0017] Fig. 3 It is an enlarged structural schematic diagram of position A in a rolling bearing fault diagnosis device based on digital twinning.
[0018] Fig. 4 It is an enlarged structural schematic diagram of position B in a rolling bearing fault diagnosis device based on digital twinning.
[0019] In the figure: 1-fixed base, 2-side support frame, 3-electric push rod, 4-connection plate, 5-outer block, 6-driving motor, 7-rotary shaft, 8-cylinder, 9-inner block, 10-limiting block, 11-limiting groove, 12-bearing inner ring, 13-bearing outer ring, 14-speed sensor, 15-vibration sensor, 16-temperature sensor, 17-data acquisition unit, 18-feature extraction unit, 19-analog computer. DETAILED DESCRIPTION
[0020] Please refer to Figs. 1-4 The utility model discloses a kind of rolling bearing fault diagnosis devices based on digital twinning, including fixed base 1;The upper side left and right ends of the fixed base 1 are fixedly connected with side support frame 2, the inner side wall of side support frame 2 is fixedly connected with several electric push rods 3, one side of electric push rod 3 is fixedly connected with connection plate 4, one side of connection plate 4 is fixedly connected with outer block 5;The upper side middle of the fixed base 1 is fixedly connected with driving motor 6, the output of driving motor 6 is fixedly connected with rotary shaft 7, the inside upper side left and right ends of rotary shaft 7 are fixedly connected with several cylinders 8, one side of cylinder 8 is fixedly connected with inner block 9;The outer side upper end of rotary shaft 7 is movably connected with limiting block 10, and the outer surface of limiting block 10 is grooved with several limiting grooves 11;The outer side of rotary shaft 7 is equipped with bearing inner ring 12, and the outer side of bearing inner ring 12 is equipped with bearing outer ring 13;The upper side left end of bearing inner ring 12 is equipped with speed sensor 14, the upper side front end of bearing inner ring 12 is equipped with vibration sensor 15, and the upper side right end of bearing inner ring 12 is equipped with temperature sensor 16;The inside upper side left end of side support frame 2 is fixedly connected with data acquisition unit 17, and the inside upper side right end of side support frame 2 is fixedly connected with feature extraction unit 18;The outer side upper end of side support frame 2 is fixedly connected with analog computer 19.
[0021] The working principle of the utility model is: in use, at this time, the bearing which needs to collect data is placed at the proper position of rotating shaft 7 first, then start cylinder 8, cylinder 8 will drive inner abutment block 9 to move to one side of bearing inner ring 12, until inner abutment block 9 completely abuts against bearing inner ring 12, at this time, the fixing of bearing inner ring 12 is completed, then start electric push rod 3, electric push rod 3 will drive connecting plate 4 and outer abutment block 5 to move to one side of bearing outer ring 13, until outer abutment block 5 completely abuts against bearing outer ring 13, at this time, the fixing of bearing outer ring 13 is completed, through inner abutment block 9 and outer abutment block 5, different size bearings can be fixed and data is collected, thereby not only increase the diversity and richness of data, make the diagnostic model learn more comprehensive fault characteristics and mode, improve the accuracy of fault diagnosis of different size bearings, and through the learning and training of various size bearing data, the generalization ability of the diagnostic model is enhanced, which can better adapt to bearing fault diagnosis under different working conditions and application scenarios, reduce the diagnostic error caused by the size difference of bearings, and also make the device can provide individualized fault diagnosis and maintenance suggestion according to the running characteristics and fault mode of different size bearings, make the maintenance work more accurate and efficient, and further improve the versatility and practicality of the device, then the limiting block 10 is fixed on the rotating shaft 7 through the limiting groove 11 and the bolt, then start the driving motor 6, the driving motor 6 will drive the rotating shaft 7 to rotate, then the bearing inner ring 12 can be driven to rotate, then the speed sensor 14, vibration sensor 15 and temperature sensor 16 can real-time monitor the rotating bearing inner ring 12, then the collected analog signal will be transmitted to the data acquisition unit 17, the data acquisition unit 17 will convert the analog signal into digital signal, then the feature extraction unit 18 will analyze the collected data in time domain, frequency domain and time-frequency domain, extract the characteristic parameters reflecting the bearing running state, then through the analog computer 19, the structure, material, geometry and the like of the bearing are modeled in detail, and a digital twin model highly consistent with the physical entity is constructed, then the processed data is input into the digital twin model, then the health condition of the bearing can be evaluated in combination with the fault diagnosis algorithm (such as improved neural network algorithm, machine learning algorithm, etc.), whether the bearing has fault and the type, position and severity of the fault are judged, then the diagnostic result will be intuitively displayed through the analog computer 19, such as fault type, fault position, fault severity, etc., then the relevant personnel can take corresponding maintenance measures according to the diagnostic result.
[0022] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and it is intended to embrace all the variations falling within the meaning and the scope of the equivalent elements of the claims. Any reference signs in the claims should not be construed as limiting the claims concerned.
[0023] Furthermore, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the present specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by a person skilled in the art.
Claims
1. A digital-twin-based rolling bearing fault diagnosis device, comprising a fixed base (1), an outer abutment (5) and an inner abutment (9), characterized in that, The upper side left and right ends of the fixed base (1) are fixedly connected with side support frames (2), the inner side walls of the side support frames (2) are fixedly connected with a plurality of electric push rods (3), one side of the electric push rod (3) is fixedly connected with a connecting plate (4), one side of the connecting plate (4) is fixedly connected with an outer abutting block (5); the upper side middle of the fixed base (1) is fixedly connected with a driving motor (6), the output end of the driving motor (6) is fixedly connected with a rotating shaft (7), the inside upper side left and right ends of the rotating shaft (7) are fixedly connected with a plurality of air cylinders (8), one side of the air cylinder (8) is fixedly connected with an inner abutting block (9).
2. The digital-twin-based rolling bearing fault diagnosis apparatus according to claim 1, characterized in that, The outer side upper end of the rotating shaft (7) is movably connected with a limiting block (10), the outer surface of the limiting block (10) is grooved with a plurality of limiting grooves (11).
3. The digital-twin-based rolling bearing fault diagnosis apparatus according to claim 1, characterized in that, The outer side of the rotating shaft (7) is provided with a bearing inner ring (12), the outer side of the bearing inner ring (12) is provided with a bearing outer ring (13).
4. The rolling bearing fault diagnosis apparatus based on digital twinning according to claim 3, characterized in that, The upper side left end of the bearing inner ring (12) is provided with a speed sensor (14), the upper side front end of the bearing inner ring (12) is provided with a vibration sensor (15), and the upper side right end of the bearing inner ring (12) is provided with a temperature sensor (16).
5. The digital-twin-based rolling bearing fault diagnosis apparatus according to claim 1, characterized in that, The inside upper side left end of the side support frame (2) is fixedly connected with a data acquisition unit (17), and the inside upper side right end of the side support frame (2) is fixedly connected with a feature extraction unit (18).
6. The digital-twin-based rolling bearing fault diagnosis apparatus according to claim 1, characterized in that, The outer side upper end of the side support frame (2) is fixedly connected with an analog computer (19).