摘要
驱动轮是连续采煤机行走机构的重要组成部分,在连采机行进过程中,驱动轮受履带交变载荷的作用,应力与变形较大,需要对其进行强度校核。分别采用传统齿轮强度计算公式与有限元法对ML360型连续采煤机的驱动轮处于前进和后退两种工况下轮齿的受力情况进行分析及强度校核。分析结果表明:当连采机前进时,驱动轮轮齿1齿根弯曲应力偏大,而最大变形位于轮齿1的顶部;而在后退时,最大应力与变形处于轮齿3部位。两种工况下轮齿最大应力远小于材料的强度极限,表明驱动轮是安全可靠的。与采用传统方法相比,用有限元法计算齿轮弯曲应力偏差较小,为7%,验证了有限元分析方法的准确性。
Driving wheel is an important part of continuous coal mining machine walking mechanism. In the process of continuous mining, the driving wheel is affected by the alternating load of the crawler. Thus, stress and deformation were large and needed to be checked in strength. Using the traditional gear strength calculation formula and the finite element method, the driving wheel of the ML360 continuous shearer was analyzed respectively in the forward and backward conditions, and the strength of the gear teeth was checked. The results of analysis indicate that when the machine was moving forward, the root bending stress of the driving wheel gear teeth was large, while the maximum deformation is located at the top of the tooth #1. In the back, the maximum stress and deformation were in the third part of the gear tooth. Under two conditions mentioned above, the stress limit of the gear teeth is much less than the material limit, indicating that the driving wheel was safe and reliable. Compared with the traditional method, the bending stress deviation of the finite element calculation was 7%, which verified the accuracy of the finite element analysis method.
作者
史俊鹏
SHI Jun-peng(Yangquan Coal Group Shagang Mining Investment Co.,Ltd.,Linfen 043500,Chin)
出处
《机械工程与自动化》
2018年第3期202-203,共2页
Mechanical Engineering & Automation
关键词
连续采煤机
驱动轮
有限元法
强度校核
continuous miner
driving wheel
finite element method （FEM）
strength checking
