滑移式挡车器制动距离计算及阻尼器优化布置研究

Research on braking distance calculation of sliding carstopper and damper optimal layout

为应对列车提速与重载运输线路终端安全防护问题,考虑工程中采用平均制动力方法估算的局限性,对滑移式挡车器阻挡机理及受力过程进行计算与仿真,以合理布置阻尼器,使列车在规定距离内停车,降低冲击对机车车辆的损害。将平均制动力方法和累计间距法与试验结果对比,发现累计间距法更接近试验结果。应用粒子群理论对阻尼器间距进行优化布置后,阻尼力波动比较平缓,能够符合工程预期需要,可为失控列车防护提供借鉴方案。

In order to deal with the problem of train speed increase and heavy-duty transportation line terminal safety protection,considering the limitations of the average braking force estimation method used in the project,the blocking mechanism and force process of the sliding blocker were modeled and calculated,in order to ensure that the train is at the specified distance.The dampers should be reasonably arranged in parking to reduce the damage to rolling stock.Comparing the average braking force method and the cumulative spacing method with the test results,it is found that the cumulative spacing method is closer to the test results.After applying the particle swarm theory to optimize the arrangement of the dampers,the damping force fl uctuates relatively smoothly,which can meet the expected needs of the project,and can provide a reference plan for the protection of runaway trains.