采煤机摇臂惰轮轴疲劳特性分析  

Analysis of Fatigue Characteristics of Rocker Arm Idler Shaft of Coal Mining Machine

作　　者：步跃跃 Bu Yueyue(Yankuang Energy Co.,Ltd.,Shandong Zoucheng 273500)

机构地区：[1]兖矿能源股份有限公司,山东邹城273500

出　　处：《山东煤炭科技》2024年第8期111-115,共5页Shandong Coal Science and Technology

摘　　要：采煤机摇臂减速箱惰轮轴长期运行在交变载荷和重载工况下,容易引发惰轮轴疲劳损伤,导致采煤机服役性能下降,甚至引发安全事故。为了保障采煤机安全稳定运行,需要对惰轮轴进行疲劳特性分析,评估其疲劳寿命;对惰轮轴进行受力分析,明确影响结构疲劳特性的作用力及其计算方法;建立惰轮轴三维有限元模型,通过静力学分析得到惰轮轴的变形和应力分布特性;在nCode DesignLife软件中融合有限元力学信息、实测载荷数据和材料疲劳特性,对惰轮轴进行疲劳分析。结果表明:轴肩部位易发生疲劳损伤,若采煤机每天工作16h,则惰轮轴的疲劳寿命约为5.5a。研究结果可为惰轮轴的优化设计和采煤机摇臂结构运行状态的健康监测提供基础。The long-term operation of the idler shaft of the coal mining machine rocker arm reduction box under alternating loads and heavy load working conditions can easily cause fatigue damage to the idler shaft,leading to a decrease in the service performance of the coal mining machine and even causing safety accidents.In order to ensure the safe and stable operation of the coal mining machine,it is necessary to analyze the fatigue characteristics of the idler shaft and evaluate its fatigue life;Conduct force analysis on the idler shaft,clarify the forces that affect the fatigue characteristics of the structure and their calculation methods;Establish a 3D finite element model of the idler shaft,and obtain the deformation and stress distribution characteristics of the idler shaft through static analysis;Integrate finite element mechanics information,measured load data,and material fatigue characteristics in nCode DesignLife software to perform fatigue analysis on the idler shaft.The results show that fatigue damage is prone to occur in the shoulder area of the shaft.If the coal mining machine works for 16 h every day,the fatigue life of the idler shaft is about 5.5 a.The research results can provide a basis for the optimization design of the idler shaft and the health monitoring of the operating status of the coal mining machine rocker arm structure.

关 键 词：采煤机 惰轮轴 有限元分析 疲劳寿命 

分 类 号：TD421.6[矿业工程—矿山机电]