阐述了轨道交通车辆常用的停放制动方式,介绍了弹簧储能停放制动缓解的原理和缓解方式,提出一种利用拉绳分线盒优化使用拉绳手动缓解弹簧停放制动的应用方案.

The paper presents the application and development of backup pneumatic brake system on electric locomotive.After analyzing two typical backup pneumatic brake system,the improved backup pneumatic brake system is proposed.

Through type HXD1C locomotive sand box brace pipes investigation,we found that the damage reason is sand erosion wear.After analyzing the damage mechanism of brace pipe,it is concluded that the first damage position occurred in the gravel impact angle of 30 degrees.Finally,the improvement measures are put forward.The brace pipes are used in good condition after improved.