Abstract
Passive grinding is a high-speed rail grinding maintenance strategy, which is completely different from the conventional rail active grinding system. In contrast to active grinding, there is no power to drive the grinding wheel to rotate actively in passive grinding. The passive grinding process is realized only by the cooperation of grinding pressure, relative motion, and deflection angle. Grinding tests for passive grinding can help to improve the passive grinding process specifications and be used for the development of passive grinding wheels. However, most of the known grinding methods are active grinding, while the passive grinding machines and processes are rarely studied. Therefore, a passive grinding test machine was designed to simulate passive grinding in this study. This paper gives a detailed description and explanation of the structure and function of the passive grinding tester. Moreover, the characteristics of the grinding process and parameter settings of the testing machine were discussed based on the passive grinding principle. The design of a passive grinding test machine provides experimental equipment support for investigating passive grinding behavior and grinding process.
Highlights
In the past 40 years, the railway industry has experienced unprecedented development worldwide [1,2]
Markine et al [6,7] believed that the rolling-contact fatigue (RCF) on the railway switch can be combated by tuning the elastic track properties and presented an integrated approach for analysis and improvement of the performance of railway crossings
The grinding pressure load required for the study of passive grinding
Summary
In the past 40 years, the railway industry has experienced unprecedented development worldwide [1,2]. Markine et al [6,7] believed that the RCF on the railway switch (turnout) can be combated by tuning the elastic track properties and presented an integrated approach for analysis and improvement of the performance of railway crossings. These studies provide theoretical and methodological supports for the analysis and improvement of the performance of railway turnouts. Dindar et al [10,11] investigated the causes of train derailments on switches and crossings, and identified appropriate risk analysis techniques for railway turnout systems. The risk assessment of train operations helped to develop maintenance standards for rails
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