Vibration Reliability Evaluation of Main Fan Spindle Bearings
Based on an analysis of failure causes, the axial force is the main reason why spindle bearings vibrate abnormally and cause frequent failures of the main fans in mines. In this paper, the probability density function of the spindle bearing vibration was established through the bootstrap maximum ent...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2019/8182530 |
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| _version_ | 1850235779191668736 |
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| author | Xiaoxu Pang Ming Qiu Liang Ye Lihai Chen |
| author_facet | Xiaoxu Pang Ming Qiu Liang Ye Lihai Chen |
| author_sort | Xiaoxu Pang |
| collection | DOAJ |
| description | Based on an analysis of failure causes, the axial force is the main reason why spindle bearings vibrate abnormally and cause frequent failures of the main fans in mines. In this paper, the probability density function of the spindle bearing vibration was established through the bootstrap maximum entropy method, the Lagrangian multiplier and the empirical coefficient were introduced, and models of the upper- and lower-bound functions of the probability density and the true value function of the failure probability were established. The true value function and interval estimation values of vibration reliability were obtained on the basis of maximum entropy. The analysis results showed that the estimation true values of vibration decreased with an increase in the empirical coefficient. When the empirical coefficient was less than 0.1, the estimated true value decreased sharply. When the empirical coefficient was greater than 0.1, the vibration value decreased linearly with the empirical coefficient. When the empirical coefficient was 0.1, the estimated true value was 0.85 mm/s2, which is consistent with the change in the actual vibration value. Therefore, when the main fan is fault predicted, the vibration value should be 0.85 mm/s2 as the basis for judgment and then the theoretical basis for the fault diagnosis of the spindle bearing are provided. |
| format | Article |
| id | doaj-art-0ece57e49ba04792a2a75e2f35d88417 |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-0ece57e49ba04792a2a75e2f35d884172025-08-20T02:02:09ZengWileyShock and Vibration1070-96221875-92032019-01-01201910.1155/2019/81825308182530Vibration Reliability Evaluation of Main Fan Spindle BearingsXiaoxu Pang0Ming Qiu1Liang Ye2Lihai Chen3School of Mechanical and Electrical Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, ChinaSchool of Mechanical and Electrical Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, ChinaSchool of Mechanical and Electrical Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, ChinaSchool of Mechanical and Electrical Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, ChinaBased on an analysis of failure causes, the axial force is the main reason why spindle bearings vibrate abnormally and cause frequent failures of the main fans in mines. In this paper, the probability density function of the spindle bearing vibration was established through the bootstrap maximum entropy method, the Lagrangian multiplier and the empirical coefficient were introduced, and models of the upper- and lower-bound functions of the probability density and the true value function of the failure probability were established. The true value function and interval estimation values of vibration reliability were obtained on the basis of maximum entropy. The analysis results showed that the estimation true values of vibration decreased with an increase in the empirical coefficient. When the empirical coefficient was less than 0.1, the estimated true value decreased sharply. When the empirical coefficient was greater than 0.1, the vibration value decreased linearly with the empirical coefficient. When the empirical coefficient was 0.1, the estimated true value was 0.85 mm/s2, which is consistent with the change in the actual vibration value. Therefore, when the main fan is fault predicted, the vibration value should be 0.85 mm/s2 as the basis for judgment and then the theoretical basis for the fault diagnosis of the spindle bearing are provided.http://dx.doi.org/10.1155/2019/8182530 |
| spellingShingle | Xiaoxu Pang Ming Qiu Liang Ye Lihai Chen Vibration Reliability Evaluation of Main Fan Spindle Bearings Shock and Vibration |
| title | Vibration Reliability Evaluation of Main Fan Spindle Bearings |
| title_full | Vibration Reliability Evaluation of Main Fan Spindle Bearings |
| title_fullStr | Vibration Reliability Evaluation of Main Fan Spindle Bearings |
| title_full_unstemmed | Vibration Reliability Evaluation of Main Fan Spindle Bearings |
| title_short | Vibration Reliability Evaluation of Main Fan Spindle Bearings |
| title_sort | vibration reliability evaluation of main fan spindle bearings |
| url | http://dx.doi.org/10.1155/2019/8182530 |
| work_keys_str_mv | AT xiaoxupang vibrationreliabilityevaluationofmainfanspindlebearings AT mingqiu vibrationreliabilityevaluationofmainfanspindlebearings AT liangye vibrationreliabilityevaluationofmainfanspindlebearings AT lihaichen vibrationreliabilityevaluationofmainfanspindlebearings |