目前车辆上使用的缓解阀结构虽然简单,但使用很不方便。列车在解体和编组时,和列检工人处理车辆故障时,都要排掉副风缸内的凤。排风时,要用手一直拉着缓解阀杆。为了排尽一辆车的风约需30～60秒以上的时间,而要排尽一列车的风则需要更长的时间,不利于调车作业和车辆检修工作,影响 The current ease of use on the vehicle while the valve structure is simple, but very inconvenient to use. Train disintegration and grouping, and inspection workers to deal with vehicle failure, have to exclude the wind within the auxiliary cylinder. Exhaust, the hand has been pulled to ease the stem. In order to exhaust a car wind about 30 to 60 seconds or more time, and to exhaust a train wind takes longer, is not conducive to shunting operations and vehicle maintenance work, the impact