防止机车制动缸压力自然缓解的设计改进  

Design improvement to prevent unintended release of brake cylinder pressure in locomotive

作　　者：刘爱明 毛金虎 张勇 LIU Ai-ming;MAO Jin-hu;ZHANG Yong(CRRC Zhuzhou Locomotive Co.,Ltd.,Zhuzhou 412001,China;Ankang Locomotive Depot,China Railway Xi’an Bureau Group Coporation,Ankang 725005,China)

机构地区：[1]中车株洲电力机车有限公司,湖南株洲412001 [2]中国铁路西安局集团公司安康机务段,陕西安康725005

出　　处：《电力机车与城轨车辆》2021年第3期64-67,共4页Electric Locomotives & Mass Transit Vehicles

摘　　要：机车长时间断电静置易导致空气分配阀容积室泄漏,进而造成机车制动缸压力自然缓解。文章分析了机车制动缸压力控制原理及自然缓解原因,并通过加装限压阀优化了制动机的设计。试验表明,该改进设计能保证机车在长时间断电静置时制动缸压力不缓解。When the locomotive is turned off for a long time,it is easy to cause the leakage of air distributing valve volume chamber and the unintended release of locomotive brake cylinder pressure.This paper analyzes the principle of brake cylinder pressure control and the reason of unintended release,and optimizes the design of brake by adding pressure limiting valve.The experimental results show that the improved design can ensure that the static brake cylinder pressure does not relieve when the locomotive is turned off for a long time.

关 键 词：机车 制动 自然缓解 制动缸 控制原理 

分 类 号：U260.35[机械工程—车辆工程]