制动系统对列车的运行致关重要。而运行中列车又经常受到外来物的袭击,车上脱落物,车下碾压物,尤其是道心飞起的石子(因列车通过时,钢轨带动枕木上下浮动而使道心间受到挤压的石子飞起)。这些物体与高速运行的列车制动系统的零部件间产生很大的作用力,而使零部件损坏,这些损坏又常常是防不胜防。 Braking system is critical to the operation of the train. The running train is often attacked by foreign objects, the car off objects, under the car rolling material, especially the road hearth flying stones (due to the train passing, the rail led the sleepers floating up and down the road between the heart under pressure Rocks fly). These objects and high-speed train braking system components have a lot of force between, leaving the parts damaged, these damage is often impossible to guard against.