机车车辆正向或反向从驼峰编组场以较高速度牵出时,普通减速顶对每个车轮都做无用功,而且可能产生“飞顶”、轻车脱线等不利现象,为了解决这些问题,研制了慢回程减速顶。经过大量试验分析,确定出比较理想的慢回程结构及影响回程时间的诸因素。自1989年以来,慢回程减速顶已在十多个大中小编组站推广应用。 When the rolling stock is pulled forward from the hump marshalling yard in a forward or reverse direction, the common decelerating roof does not work well for each wheel, and may cause unfavorable phenomena such as “flying roof” and light vehicle off-line. In order to solve these problems , Developed a slow return deceleration top. After a large number of test analysis to determine the ideal slow return structure and the factors that affect the return time. Since 1989, the slow return deceleration top has been more than a dozen small medium and large marshalling stations to promote the application.