Research on influence of harmonic wear wheel on wheel/rail contact geometry of high-speed train

Xiao, Qian; Luo, Zhixiang; Xu, Xu; Zheng, Jifeng; Cheng, Shu Kei

doi:10.1007/s12206-019-0107-6

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…Then the portability and speed of the measuring equipment should be improved. The key dimensions of wheelsets are crucial to the safety of train operation, so they need to be detected in time [4][5][6][7][8][9]. The present main methods of measuring key dimensions of wheelsets have many categories.…”

Section: Introductionmentioning

confidence: 99%

Rapid measurement method for key dimensions of train wheelset based on improved image processing algorithm

Fang,

Wang,

Zhu

et al. 2024

Meas. Sci. Technol.

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The key dimensions of train wheelsets change with the increase of running time. To ensure the safe operation of the train, the key dimensions should meet the relevant technical requirements. Maintenance of wheelsets and measurement of key dimensions are important part of the daily maintenance work. A rapid measurement method for key dimensions of hand-held wheelsets integrating multiple parameter measurements is studied. The general framework of the system is examined and the roles of the modules are described. A rapid measurement algorithm for key dimensions of wheelsets based on image processing algorithms is studied. The optical center for the initial position of the continuous line spot is searched. The continuous line spot center extraction algorithm during tread measurement is optimized. A three-dimensional model is reconstructed using point cloud data, then key dimensions are measured and calculated from the model. In order to verify the feasibility of the method, traditional measurement methods are used for comparison tests. The results show that the method is effective in the daily maintenance of trains.

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Section: Introductionmentioning

confidence: 99%

Rapid measurement method for key dimensions of train wheelset based on improved image processing algorithm

Fang,

Wang,

Zhu

et al. 2024

Meas. Sci. Technol.

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“…Gan et al [27][28][29] proposed an accurate calculation method of equivalent conicity of the measured wheel-rail and found that the change rate of S1002CN tread contact width with increasing mileage was more sensitive than the equivalent conicity. The influence of wheel polygonal wear on wheel-rail contact geometry was studied by Xiao et al 30 They concluded that the wave depth and order of polygonal wear have minimal effect on the wheelset lateral displacement, and the maximum value of equivalent conicity and contact angle were obtained near the deepest point of the polygonal wear.…”

Section: Introductionmentioning

confidence: 99%

Hunting motion of high-speed emu during cross-line operation: Mechanism and countermeasures

Yang,

Wei,

Gan

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part F:

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During the operation of the Chinese 250 km/h-level EMU, hunting occurs when the EMU crosses from Line B to Line A. Numerous tests and simulations have been conducted to investigate the mechanism of this phenomenon. Comparisons of the measured rail profiles of the two lines indicate that the left rail in Line A is higher than that in Line B at the inner rail shoulder. In addition, the top position of the right rail in Line A is approximately 2–3 mm closer to the inside than that of the right rail in Line B, with the right rail in Line A being higher than that in Line B at the inner rail shoulder. These differences cause a significant increase in the wheel–rail equivalent conicity when the EMU crosses from Line B to Line A and further cause the hunting phenomenon. Moreover, simulations and experiments are conducted to investigate the countermeasures for EMU cross-line hunting. Field test results show that both increasing the damping of the yaw damper and wheel reprofiling can improve the stability during EMU cross-line operation; however, the effect of increasing the damping of the yaw damper is limited under particularly poor wheel–rail relationship. Simulation results reveal that rail grinding of Line A referring to the Chinese 60N rail profile can also improve the stability of the EMU during cross-line operation.

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Influence of active steering with adaptive control law on a metro rail vehicle wheel wear and dynamic performance

2020

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Research on influence of harmonic wear wheel on wheel/rail contact geometry of high-speed train

Cited by 5 publications

References 2 publications

Rapid measurement method for key dimensions of train wheelset based on improved image processing algorithm

Rapid measurement method for key dimensions of train wheelset based on improved image processing algorithm

Hunting motion of high-speed emu during cross-line operation: Mechanism and countermeasures

Influence of active steering with adaptive control law on a metro rail vehicle wheel wear and dynamic performance

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