论文部分内容阅读
为了控制高速道岔心轨扳动力和不足位移,根据双肢弹性可弯心轨的特殊结构外形、受力特性和扳动机理,建立心轨转换仿真模型,以42号道岔为例分析不同牵引点布置方式下心轨扳动力和不足位移的变化规律。计算结果表明:牵引点扳动力随摩擦系数的增大基本成递增关系,扳动力的很大一部分用于克服滑床板的摩擦力;采用减摩措施、增设牵引点可以减小扳动力和不足位移;在最后一牵引点至跟端间设置反变形,可使不足位移控制在客运专线要求之内。
In order to control the pulling force and lacking displacement of the high-speed turnout, the simulation model of the heart-rail transition was established according to the special structure shape, force characteristics and pulling mechanism of the bendable double-limbs flexible rail. The 42-point turnout was taken as an example to analyze the different towing points The changing rule of pulling force and lacking displacement of the center rail under the arrangement mode. The calculation results show that the pulling force of the traction point increases with the increase of the friction coefficient, and a large part of the pulling force is used to overcome the friction force of the slide plate. Using the anti-friction measures, the additional traction points can reduce the pulling force and insufficient displacement ; In the last traction point to heel set anti-deformation, the lack of displacement control in passenger dedicated line requirements.