汽车自动调整臂螺旋压缩弹簧的失效建模  

Failure Modeling of Helical Compression Spring for Automatic Brake Adjuster

作　　者：罗哉[1] 江文松[1] 陆艺[1] 胡晓峰[1] 

机构地区：[1]中国计量学院,杭州310018

出　　处：《中国机械工程》2013年第12期1596-1599,共4页China Mechanical Engineering

基　　金：国家质检总局科技计划资助项目(2010QK406);国家质检总局公益性行业科研专项(201210109)

摘　　要：通过分析自动调整臂的工作原理,基于故障树分析法(FTA)构建了引起自动调整臂自调功能失效的螺旋压缩弹簧的失效模型。结合该模型,利用自动调整臂综合性能测试系统测得的分离力和分离间隙数据来判断自调功能发生失效的临界点,通过测试调整力矩值的变化对上述模型加以验证。实验验证结果表明,该模型能正确判别自动调整臂的自调功能是否发生失效。Through analyzing the working principle of automatic brake adjuster, this paper used FTA method to establish a mathematic failure model of helical compression spring, which directly caused the disable of automatic brake adjuster＇s self--regulation. Both of the model and the data of separation force and backlash which were tested by a measurement system of automatic brake adjust- er,were used to judge whether the critical position of the function of automatic brake adjuster＇s self-- regulation was failure. As well,through testing the value change of adjusted torque to check whether the failure model above was right. Through the experiments,this model can judge correctly whether the function of automatic brake adjuster＇s self--regulation is failure.

关 键 词：自动调整臂 自调功能 螺旋压缩弹簧 失效模型 故障树分析法 

分 类 号：U463.55[机械工程—车辆工程] TP2[交通运输工程—载运工具运用工程]