中低速磁浮线道岔旋转轨道温度变形研究  

Temperature Deformation on Rotating Track Turnouts of Medium-low Speed Maglev

作　　者：王红霞[1] 

机构地区：[1]中铁宝桥集团有限公司,宝鸡高级工程师721006

出　　处：《城市轨道交通研究》2013年第10期44-47,共4页Urban Mass Transit

摘　　要：磁浮车辆对线路精度的要求很高,不仅要求道岔设备的转辙对位精度高,而且要求道岔的线形保持精度高。通过实际测量和分析计算,阐明了梯度温度对中低速磁浮交叉渡线道岔旋转轨道梁直线度的影响及危害。为了保证道岔系统较高的换线精度,对原设计进行了优化,大幅降低了因温度影响而造成的道岔旋转轨道梁的变形;增加了巧妙的机构,从而保证了旋转轨道的转辙对位精度,改善了旋转轨道的受力条件,从根本上消除了外部环境可能带来的隐患。Medium-low speed maglev requires strict temperature deformation of the rotating track beam on scissors crossing turnouts. According to actual measurement and analytic calculation, the influence and hazard of gradient temperature to the alignment of the rotating track beam are expounded. To guarantee the high precision of switching for the turnout system and reduce the influence of tempera- ture deformation, the original design is optimized, an in- genious mechanism is added to ensure the precision of switching and improve the force conditions of rotating track, which will ultimately eliminate the incipient fault caused by the external circumstances.

关 键 词：中低速磁浮线 交叉渡线道岔 温度梯度 换线精度 设计优化 

分 类 号：U213.6[交通运输工程—道路与铁道工程] U237