PE装置挤出机齿轮箱失效分析

Failure Analysis of Gear Box on PE Extrude

以PE装置齿轮箱上输出轴联轴器端轴承外圈的凸块进行了化学成分和金相检测,确认其为焊点。为了进一步分析焊点造成的影响,使用KISSoft软件进行了齿轮副及轴承受力分析,明确了轴承外圈焊点在一定程度上补偿了原始箱体精度不足的问题,但长期使用造成齿轮箱轴承损坏、轴承座孔和齿轮副的失效。同时,为今后的齿轮箱设计和应急修复具有重要参考意义。

Chemical composition and metal lographic examination were conducted on the output shaft coupling end bearing of the PE device gearbox,confirming that it is a solder joint.In order to further analyze the impact of welding points.KISSoft software was used to analyze the force on the gear pair and shaft bearing,and it was clarified that the welding points on the outer bearing ring was compensated for the insufficient accuracy of the original box to a certain extent.But gearbox bearings、bearing seat holes and gear pair failure were caused serious damage with long-term use.Meanwhile it has important reference significance for future gearbox design and emergency repair.