摘要
为制定在特殊天气情况下(雾、雾霾)列车出库时的应急预案,以及准确掌握列车在不同初速度下的紧急制动距离,在试车线对西安地铁1、2号线车辆在不同初速度下的紧急制动距离进行测试。对测试结果进行理论分析与现场验证,得出:在制动系统相同的情况下,制动初速度越大,空走时间对制动减速度的影响就越小,平均减速度越接近瞬时减速度,在同等制动级位下,纯空气制动和电控混合制动虽然均满足减速度要求,但减速度值大小不尽相同;在制动系统不同的情况下,制动供货商设计和确定的系统减速度下限值、闸瓦材质、空走时间、所选的理论计算模型,以及外界测试工况对制动减速度和制动距离均有影响。
In order to develop the emergency plans of train leaving the storehouse in special weather conditions（fog, haze and so on）, and accurately grasp the train emergency braking distance in different initial velocity, the test of Xi＇an metro line 1 and 2 vehicles was put forward in the test line. With the theoretical analysis and field validation test results, it was concluded： with the same braking system, initial braking speed was larger, empty walk time influence on braking deceleration was smaller, and the average deceleration was approaching instantaneous deceleration; in the same braking grade, although pure air brake and mixed electric brake both met the reduction speed requirements, but the deceleration values were different; in the different braking system, the designed and determined deceleration limit value, the brake shoe material, empty walking time, the theoretical calculation model and the external test conditions would influence the braking deceleration and braking distance.
出处
《机车电传动》
北大核心
2016年第5期98-101,109,共5页
Electric Drive for Locomotives
关键词
地铁列车
空走时间
初速度
减速度
制动距离
metro train
empty walking time
initial velocity
deceleration
braking distance
