Abstract: In order to find out the guiding process of a new type of rubber-tired track vehicle passing through turnouts, the guiding mechanism of the vehicle is designed and analyzed. Firstly, the geometrical relation between turnout radius and guide rod size is established according to the relative position of the vehicle and guide rail when passing through the turnout in steady state. Secondly, using the structural parameters of a new type of rubber-tired track vehicle, the variation rule of the center of mass position with the guide rod length under the radius of 15～85 m is obtained, and the guide rod length is determined. Finally, by checking the distance between wheel and turnout side wall under different turnout radii, the feasibility of guiding vehicles passing through turnouts is demonstrated. The results show that the trajectory difference between the center of mass and turnouts increases with the increase of guide rod length and decreases with the increase of guide rail radius. Through comprehensive consideration of various factors, the selected guide rod size is 0.8 m. The checking calculation shows that the difference between the inner/outer wheel track and the side wall is more than 7.9 cm, indicating that the vehicle can pass through the turnout within the preset radius smoothly.

Key words: rubber-tired track vehicle; guide through turnout; guide wheel; ackermann angle of rotation; mechanism design

摘要： 为探明某新型胶轮路轨车辆过岔导向过程，开展了该车导向机构的设计及分析。首先 根据稳态过岔时车辆与导轨的相对位置，建立道岔半径与导杆尺寸间的几何关系；其次利用 某新型胶轮路轨车辆结构参数，获得了 15～85 m 半径下质心位置随导杆长度的变化规律，确 定了导杆长度；最后通过验算不同道岔半径下车轮与道岔侧墙的间距，说明了车辆过岔导向 的可行性。结果表明：质心与道岔的轨迹差随导杆长度的增长而增大，随导轨半径的增大而 减小，通过综合考虑各种因素，选定的导杆尺寸为 0.8 m；验算表明，过岔时的内/外车轮轨 迹与侧墙差值在 7.9 cm 以上，说明车辆可顺利通过预设半径范围内的道岔。

关键词: 胶轮路轨车辆；过岔导向；导轮；阿克曼转角；机构设计