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|本期目录/Table of Contents|

基于实验测试的采煤机截割载荷的分形分布规律研究

《应用力学学报》[ISSN:1000-4939/CN:61-1112/O3]

期数:
2019年02期
页码:
417-423
栏目:
出版日期:
2018-12-18

文章信息/Info

Title:
Study on fractal distribution law of cutting load of shearer based on experimental tests
作者:
郝志勇1周正啟2袁智3雷耀龙2张佩2
1 辽宁工程技术大学 机械工程学院 123000 阜新;2 辽宁工程技术大学 研究生学院 123000 阜新; 3 中国煤矿机械装备有限责任公司 100011 北京
Author(s):
Hao Zhiyong1 Zhou Zhengqi2 Yuan Zhi3 Lei Yaolong2 Zhang Pei 2
1 School of Mechanical Engineering, Liaoning Engineering Technology University, 123000, Fuxin, China; 2 School of Graduate, Liaoning Engineering Technology University, 123000, Fuxin, China; 3 China National Coal Mining Equipment Company, 100011, Beijing, China
关键词:
采煤机载荷谱小波分解分形理论滚筒载荷比例系数
分类号:
TD421
DOI:
10.11776/cjam.36.02.B003
文献标识码:
A
摘要:
为研究采煤机截割载荷分布规律,实验组设计了复杂工况下采煤机截割煤壁的实验检测系统。本文选择实时测试摇臂四根销轴的应变信号,利用Matlab导入计算公式求出了滚筒截割载荷谱,并将载荷谱进行小波降噪处理;最后运用分形理论求出了采煤机在不同工况下滚筒载荷比例系数R,并对比例系数R进行了分析。结果表明:①在一定煤岩硬度下,R与牵引速度近似呈线性递减关系,即随着牵引速度的增大,滚筒载荷波动逐渐减小;②直线截割与斜切截割这两种工况对R影响不大;③随着煤岩硬度的增加,滚筒载荷比例系数R逐渐减小。本文研究结果为采煤机载荷分析和滚筒设计提供了一种新方法。

参考文献/References

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