矿用挖掘机工作装置结构强度分析与试验研究  

Structural strength analysis and experimental research of mine excavator working device

作　　者：万一品 朱晓君 杨海清 刘旋 WAN Yipin;ZHU Xiaojun;YANG Haiqing;LIU Xuan(The Key Laboratory of Road Construction Technology and Equipment of MOE,Chang’an University,Xi’an 710064,Shaanxi,China;Xi’an Qingang Clean Energy Technology Limited Company,Xi’an 710018,Shaanxi,China)

机构地区：[1]长安大学道路施工技术与装备教育部重点实验室,陕西西安710064 [2]西安庆港洁能科技有限公司,陕西西安710018

出　　处：《中国工程机械学报》2025年第1期115-119,共5页Chinese Journal of Construction Machinery

基　　金：陕西省自然科学基础研究计划资助项目(2021JQ283)。

摘　　要：为获得矿用挖掘机工作装置结构疲劳载荷测点位置,并快速准确评估其结构强度和疲劳安全性,以国产50型矿用挖掘机为研究对象。建立挖掘机工作装置在典型作业姿态下的受力模型,进行结构有限元仿真分析和试验研究。基于Goodman-Smith极限线图法,完成工作装置的疲劳安全评估。结果表明:基于经验受力模型和有限元仿真分析,可准确合理地确定结构疲劳载荷测点,各测点应力仿真值与实测值最大误差为7.32%。疲劳载荷测点的应力结果均在疲劳安全范围内,该型号挖掘机工作装置结构静强度与疲劳强度满足设计要求。研究结果为挖掘机结构载荷谱测试与抗疲劳优化设计提供参考。To obtain the location of the fatigue load measurement point of the mine excavator working device structure,and to quickly and accurately assess its structural strength and fatigue safety,the force model of the excavator working device under typical operating attitude is established,and the domestic 50-type mine excavator is taken as the research object to carry out the structural finite element simulation analysis and experimental research.The fatigue safety assessment of the working device was completed based on the Goodman-Smith limit line diagram method.The results show that:based on the empirical stress model and finite element simulation analysis,the structural fatigue load measurement points can be accurately and reasonably determined,and the maximum error between the simulated and measured stress values of each measurement point is 7.32%;the stress results of fatigue load measurement points are all within the fatigue safety range,and the structural static and fatigue strength of this type of excavator’s working device meets the design requirements.The results of the study provide the basis for the structural load spectrum test and fatigue optimization design of excavator.

关 键 词：矿用挖掘机 工作装置 结构强度 疲劳强度 

分 类 号：TH243.1[机械工程—机械制造及自动化]