温度场作用下起重机械运行机构传动轴热力耦合断裂失效分析  

Failure analysis of thermal-mechanical coupling fracture of transmission shaft of hoisting machinery operating mechanism under temperature field

作　　者：王松雷[1,2,3] 杨嘉楠 薛志钢 Wang Songlei;Yang Jianan;Xue Zhigang

机构地区：[1]江苏省特种设备安全监督检验研究院无锡分院,无锡214174 [2]国家桥门式起重机械产品质量检验检测中心,无锡214174 [3]江苏省市场监管重点实验室(起重运输安全与节能),无锡214174 [4]霍尼彼勒(苏州)智能装备有限公司,苏州215335

出　　处：《起重运输机械》2024年第21期85-90,共6页Hoisting and Conveying Machinery

摘　　要：文中针对一起用于炼钢炉挡火门开闭作业的起重机运行机构传动轴断裂失效实例,通过现场工作工况勘察和失效结果调研,对轴的断口部位进行金相扫描、表面粗糙度测量、硬度检测、材料成分测试、力学性能试验、冲击功试验以及残余应力测定,对扭转刚度进行了理论计算和COMSOL Multiphysics有限元分析。从设计、工艺、制造、热处理、安装装配、机构布置、使用工况、工作环境等方面全面分析了导致断轴失效事故发生的原因,并给出了改进建议。为温度场环境下工作的传动机构选型和设计提供了方法和理论依据,为避免此类断轴失效的发生和失效事故调查及分析提供了经验参考。Based on an example of fracture failure of the transmission shaft of the crane operating mechanism used for the opening and closing of the fire damper of the steelmaking furnace,field working condition investigation and failure result investigation,metallographic scanning,surface roughness measurement,hardness detection,material composition test,mechanical property test,impact work test and residual stress measurement were carried out on the fracture part of the shaft,and the torsional stiffness was calculated based on theory and analyzed by COMSOL Multiphysics finite element method.The causes of broken shaft failure are comprehensively analyzed from the aspects of design,technology,manufacturing,heat treatment,installation and assembly,mechanism layout,working conditions and working environment,and suggestions for improvement are given,which provides a method and theoretical basis for the selection and design of transmission mechanism working in temperature field environment,and an empirical reference for avoiding the occurrence of such broken shaft failure and the investigation and analysis of failure accidents.

关 键 词：起重机 传动轴 温度场 热力耦合 断裂失效 残余应力 

分 类 号：TH218[机械工程—机械制造及自动化]