摘要
在对MG980-WD电牵引采煤机及其液压拉杆结构进行概述的基础上,利用有限元软件建立了构建了疲劳寿命有限元仿真模型并进行分析计算。结果表明,液压拉杆结构疲劳寿命分布非常不均匀,靠近两端直径较小的区域寿命较短,尤其是过渡圆位置疲劳寿命最短。以过渡圆半径为优化对象开展分析,发现当半径设置为15 mm时最合适。将优化后的拉杆结构部署到采煤机中,并在煤矿工作面累计运行1年时间,通过对新拉杆结构运行情况进行观察,发现效果良好,疲劳寿命得到大幅度提升,在保障采煤机的可靠运行方面发挥了更大作用。
Based on the overview of MG980-WD electric traction coal miner and its hydraulic tie rod structure,a fatigue life finite element simulation model was established and analysed using finite element software.The results show that the fatigue life distribution of the hydraulic tie rod structure is very uneven,and the life is shorter in the area with smaller diameters near the two ends,especially the shortest fatigue life in the position of the transition circle.The transition circle radius is taken as the optimisation object,and it is found that the most suitable radius is set at 15 mm.The optimised tie bar structure was deployed into the coal mining machine and operated for one year in the working face of the coal mine.Through the observation of the operation of the new tie bar structure,it was found that the effect was good,and the fatigue life was greatly improved,and it played a greater role in guaranteeing the reliable operation of the coal mining machine.
作者
魏骄
Wei Jiao(Jinneng Holding Coal Majialiang Coal Co.,Ltd.,Shuozhou Shanxi 036000,China)
出处
《机械管理开发》
2025年第5期139-141,共3页
Mechanical Management and Development
关键词
采煤机
液压拉杆
疲劳寿命
结构优化
coal mining machine
hydraulic tie rod
fatigue life
structure optimisation
