作　　者： (李文博）; (王登平）; (李林）;

机构地区： 安徽江淮汽车股份有限公司,安徽合肥230022

出　　处： 《汽车实用技术》 2017年第17期152-154,共3页

摘　　要： 作为制动系统的重要组成部分,重卡的制动器安装在中、后桥上,并通过气室内的高压气体流入执行机构实现制动作用。如气室支架发生断裂,气室的脱落损伤可能造成制动气压不足,进而导致制动失效,危及整车行驶安全。文章针对某驱动桥气室支架断裂问题,通过运用有限元分析、振动试验等多种手段,对其表现的断裂方式进行剖析,并得出适宜的改进方法,使产品的可靠性得到保障。 As an important part of brake system, brake is installed on the forward and rear axle of a heavy truck, brake system will stop the truck from moving when the high pressure gas flow into the actuator.If the air chamber bracket is broken, the air chamber would be worn down. With the decrease of air pressure,brake system can’t stop the truck, and this will endanger the safety of the truck.To find out why, we use many means to analyze the fracture, such as finite element analysis and vibration test, and we find out the way which can prevent the chamber bracket from being broken in order to make the truck safe.

关 键 词： 气室支架 疲劳断裂 有限元分析 金相 振动试验