铁路养护维修毕业设计(论文)

中文摘要

铁路钢轨是铁路线路的主要组成部分，它承受机车车辆荷载，并传之于轨枕，起引导列车方向的作用。钢轨状态的好坏直接影响着线路维修保养的质量、行车安全和钢轨的使用寿命。钢轨在大自然的作用以及列车的运营作用下不可避免地产生锈蚀、磨耗和伤损。在通常情况下，大自然的侵蚀作用远不及列车在既有线线路运营作用所引起的钢轨磨耗严重。特别是处于小半径曲线上的钢轨，由于存在曲线钢轨对列车轮对的导向作用，车轮与钢轨产生相互间的黏着、蠕滑和滑动，轮轨的磨耗和损伤十分严重。具体表现在曲线上股钢轨磨耗加剧，导致几何形状发生改变，有效截面减小，严重影响运营安全，在实习期间通过实践锻炼又能够进一步掌握线路的各项技术标准，提升作业的技能，对线路道岔以及接头进行检查，以保证行车安全。

关键词：既有线线路小半径曲线道岔接头

Abstract

Railway rail lines is the main part of its locomotive under vehicle load, and preach to the sleeper, guide the direction of the train.The stand or fall of rail state directly influences the quality of the line maintenance, traffic safety and service life of the rail.Rail under the role of nature and the operation of the train is inevitably produce rust, wear and damage.Under normal circumstances, the erosion of nature is far less than the operation of the train effect caused by the rail wear.Especially in the small radius curve rail, due to the existence of train wheel curve rail to the guiding role of interaction between wheel and rail gelling, creep and sliding, wheel/rail wear and damage is very serious.Embodied in the curve rail abrasion, causing geometry change, effective cross section decreases, and seriously affect the operation safety, during the internship practice exercise and can further grasp the line through the various technical standard, improve operation skills, the circuit switch and connectors for inspection, to ensure driving safety.

Key Words:

Shjiazhuang-taiyuan passenger-dedicated lines，small radius curve ，switch joint