Analysis on the selection of brake shoe and wheel for an engineering train from the perspective of braking safety

Analysis on the selection of brake shoe and wheel for an engineering train from the perspective of braking safety

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For an engineering train with maximum running speed up to 160 km/h and axle load of 21 t, the brake shoe type, single and double side braking type and wheel diameter were confirmed by analysis in four aspects of braking distance limit, wheel-rail adhesion limit, wheel temperature limit and wheel strength requirement, and the Fan Shop - NCAA - Clothing strength of the wheels with the maximum wear was checked under the combined action of thermal load and mechanical load in two braking conditions under the proposed selection scheme.According to the results, for the engineering train with an initial speed at braking application of 160 km/h and 915 mm wheel diameter, the wheel configuration of the M-type powder metallurgy brake shoe and wheel clasp braking can not only meet the requirements of emergency braking distance and no sliding, but also maintain the maximum temperature Deep Fryers of wheel tread less than the temperature limit required for service, and exert the maximum stress of the wheels with the maximum wear under the two braking conditions meeting the strength requirements.