The article presents the results of theoretical studies of interaction process of a freight car body with a three-piece bogie, which are aimed at solving the relevant problem of increasing the permissible speeds at railways with 1520 mm track gauge under conditions of linear load increase on the wheel set axle. The purpose of the research was to propose such an approach to the study of interaction processes between rolling stock and track, taking into account the interaction model of neighbouring carriages in trains, which will allow more correctly take into account the dynamics of rolling stock and increase traffic safety. The oscillation frequencies of the body, bogie and wheel set are analysed in order to establish a possible resonance phenomenon. The article examines the longitudinal and transverse forces of pseudo-sliding (creeping) arising between the climbing wheel of the front bogie and the rails. The conducted studies can contribute to the replacement of 18-100 bogies with modernised three-piece bogies while maintaining the main most metal-consuming elements of the 18-100 model implementing some modernisation units. The results obtained will make it possible to revise the permissible vehicle speeds with an increased axle load.

文章介绍了货车车体与三件式转向架相互作用过程的理论研究成果，旨在解决增加1520mm轨距铁路在线性载荷条件下提高许用速度的相关问题。轮对轴。研究的目的是提出这样一种方法来研究机车车辆和轨道之间的相互作用过程，同时考虑到列车中相邻车厢的相互作用模型，这将允许更正确地考虑机车车辆的动态并增加交通安全。分析车身、转向架和轮对的振荡频率，以确定可能的共振现象。本文研究了前转向架的爬升轮与钢轨之间产生的伪滑动（爬行）的纵向和横向力。所进行的研究有助于用现代化的三件式转向架替换 18-100 转向架，同时保留 18-100 模型中主要的金属消耗量最高的元件，实施一些现代化单元。获得的结果将可以在增加轴载的情况下修改允许的车速。