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首页> 外文会议>Proceedings of the ASME/IEEE joint rail conference 2009 >UNSAFE HUNTING OF FREIGHT RAIL CARS
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UNSAFE HUNTING OF FREIGHT RAIL CARS

机译：货运铁路车不安全

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摘要

Hunting of rail vehicles refers to self-excited oscillation of truck and carbody. This dynamic instability is due to the conicity of the wheels, the wheel/rail creep forces and the action of the suspensions. Hunting increases wheel/rail wear, causes damage to sensitive lading and in extreme cases can throw the track out of geometry. Furthermore, severe hunting can create unsafe operating conditions that lead to derailments. Although it is widely recognized that truck hunting is not a good thing, it is a fact that many thousands of trucks do hunt on any given day but the number of derailments from hunting are few. So when is the hunting unsafe? Database and parametric studies of unsafe hunting are presented in this paper. The FRA database was used to study the hunting derailments by year, car type, track, speed, load condition, weather and temperature. Parametric studies of hunting and unsafe hunting of three-piece freight cars were conducted based on a large number of measured wheel profiles in combination with worn and new rail profiles. The vehicle, track and operational factors that have the major influence on unsafe hunting are analyzed and the conditions of unsafe hunting presented.
机译：铁路车辆的狩猎是指卡车和车身的自激振荡。这种动态不稳定性是由于车轮的锥度，车轮/导轨的蠕变力以及悬架的作用引起的。摆动会增加车轮/轨道的磨损，损坏敏感的提花，在极端情况下可能会使轨道偏离几何形状。此外，严重的打猎会导致不安全的操作条件，从而导致脱轨。尽管人们普遍认为打猎不是一件好事，但事实是，每天都有成千上万的卡车打猎，但因打猎而出轨的次数很少。那么什么时候狩猎不安全？本文介绍了不安全狩猎的数据库和参数研究。 FRA数据库用于按年份，汽车类型，轨道，速度，负荷状况，天气和温度来研究狩猎出轨。基于大量测量的车轮轮廓，结合磨损的和新的铁路轮廓，进行了三件式货运车辆的搜寻和不安全搜寻的参数研究。分析了对不安全狩猎产生重大影响的车辆，轨道和操作因素，并提出了不安全狩猎的条件。

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  • 来源
  • 会议地点 Pueblo CO(US);Pueblo CO(US)
  • 作者

    Wei Huang; Yan Liu;

  • 作者单位

    Centre for Surface Transportation Technology National Research Council Canada 2320 Lester Road, Ottawa, Ontario, Canada;

    Centre for Surface Transportation Technology National Research Council Canada 2320 Lester Road, Ottawa, Ontario, Canada;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 铁路运输;
  • 关键词

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