Layout selection for single-axle forced-steering radial mechanism
Traditional bogies negotiating on curves with small radii result in large angles of attack for the steering wheelsets, leading to serious wheel-rail wear. Double-axle forced-steering bogies are effective in reducing such angles of attack, but they feature an intricate structure. In contrast, single-...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Electric Drive for Locomotives
2024-07-01
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| Series: | 机车电传动 |
| Subjects: | |
| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2024.04.010 |
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| Summary: | Traditional bogies negotiating on curves with small radii result in large angles of attack for the steering wheelsets, leading to serious wheel-rail wear. Double-axle forced-steering bogies are effective in reducing such angles of attack, but they feature an intricate structure. In contrast, single-axle forced-steering bogies can also reduce these angles of attack, thereby improving the curve negotiation performance of the vehicles, while offering a comparatively simpler structure. Based on these considerations, dynamics models were established, respectively incorporating traditional bogie, double-axle forced-steering bogie, and single-axle forced-steering bogies, for a specific model of railway service cars, which served as the research object, to compare their curve negotiation performance. Additionally, the influence of the positions of the radial mechanism and power wheelset on the curve negotiation performance of the railway service cars was evaluated, considering the effects of traction force and bidirectional operation. This comprehensive analysis led to the optimal layout of the single-axle forced-steering radial mechanism and power wheelset. Furthermore, the stability and curve negotiation performance of railway service cars with this single-axle forced-steering bogie configuration were analyzed. The results show a slightly lower critical speed compared to railway service cars with traditional bogies and double-axle forced-steering bogies. The single-axle forced-steering radial mechanism configuration proves effect in reducing the lateral force on the wheelsets, the derailment coefficient, and the angle of attack for the wheelsets. Specifically, relative to the traditional bogie configuration, the lateral force on the wheelsets decreased by 9.51%, the derailment coefficient is reduced by 11.32%, and the angle of attack for the first-position wheelsets fell by 52.49%. |
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| ISSN: | 1000-128X |