Reliability and fatigue life analysis of key parts of shearer

可靠性(半导体) 螺旋(铁路) 结构工程 工程类 压力(语言学) 煤矿开采 联轴节(管道) 壳体(结构) 过程(计算) 机械工程 计算机科学 功率(物理) 语言学 物理 哲学 量子力学 操作系统 废物管理
作者
Zhen Tian,Shan Gao,Shuangxi Jing,Li Jin
出处
期刊:Engineering Failure Analysis [Elsevier BV]
卷期号:138: 106357-106357 被引量:9
标识
DOI:10.1016/j.engfailanal.2022.106357
摘要

The poor reliability of shearer restricts the development and production efficiency of thin coal seam. The dynamic characteristics of the key parts have a great influence on the reliability and fatigue life of the thin seam shearer. In order to achieve high-yield and high-efficiency production of thin coal seams, the instantaneous load on the spiral drum was calculated based on the mechanical model of the spiral drum during the cutting process and the coal sample properties. According to the structure of the shearer and the material of key parts, a rigid-flexible coupling model of the shearer was established, and the stress information of the rocker arm shell, planetary carrier and planetary shaft was obtained by dynamic simulations. The membership function between material stress and structural reliability was constructed by Gaussian membership function, the main factors affecting the reliability of shearer were analyzed by orthogonal simulation test and PSO-BP neural network. The fatigue life of rocker arm shell, planetary carrier and planetary shaft were predicted by counting the rain flow of the stress information. Measures to improve the reliability and fatigue life of the shearer were proposed based on the analysis results, and effectiveness of the method proposed in this paper was verified by the practical application.
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