观光特快列车可能进入名胜古迹等轨道整备水平较差的地方线运行。为降低其运行颠簸,开发了变阻尼二系垂向液压减振装置。线路运行试验表明,该减振装置具有良好的减振效果。 The express train may enter places such as places of historic interest that are less well prepared. In order to reduce the bumpy operation, a two-way vertical damping hydraulic damping device was developed. The circuit running test shows that the vibration damping device has a good damping effect.