某款发动机减震皮带轮螺栓组件松脱问题解析  

Loosening Problem Analysis on a Bolt Assembly of a Certain Engine Vibration Damping Pulley

作　　者：胡广 陈丽霞 乔彦超 HU Guang;CHENG Lixia;QIAO Yanchao(Ningbo Geely Royal Engine Components Co.,Ltd.,Ningbo 315336,China)

机构地区：[1]宁波吉利罗佑发动机零部件有限公司,浙江宁波315336

出　　处：《机械工程师》2021年第12期75-77,共3页Mechanical Engineer

摘　　要：某机型台架试验过程中发动机前端异响,拆解发现减震皮带轮螺栓组件松脱。经分析,原因为装配减震皮带轮时,在带轮花键未对正的情况下进行螺栓拧紧,导致螺栓拧紧产生虚假力矩,造成螺栓松脱。通过优化装配过程,增加减震皮带轮组件花键对正操作,便于两花键齿面正确咬合,并调整螺栓拧紧力矩监控范围,保证螺栓正确拧紧,解决螺栓松脱问题。During the bench test of a certain model,there is abnormal noise at the front end of the engine,and it is found that the bolt assembly of the vibration damping pulley is loose after disassembly.Analysis proves that when assembling the damping pulley,the bolt is tightened when the pulley spline is not aligned,resulting in false torque when the bolt is tightened,causing the bolt to loosen.By optimizing the assembly process,the spline alignment operation of the damping pulley assembly is added to facilitate the correct engagement of the tooth surfaces of the two splines.The monitoring range of bolt tightening torque is adjusted to ensure that the bolts are tightened correctly and solve the problem of bolt loosening.

关 键 词：发动机 螺栓 松脱 

分 类 号：TH131.3[机械工程—机械制造及自动化]