采煤机滚筒参数优化及其对摇臂安全使用性能影响

doi:10.16265/j.cnki.issn1003-3033.2018.08.010

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (8): 55-60.doi: 10.16265/j.cnki.issn1003-3033.2018.08.010

采煤机滚筒参数优化及其对摇臂安全使用性能影响

师建国^1,2 讲师, 高广财³ 工程师, 滕睿¹

1 辽宁工程技术大学机械工程学院,辽宁阜新 123000;
2 煤炭工业协会高端综采成套装备动力学测试与大数据分析中心,辽宁阜新 123000;
3 阜新市金广矿山机械制造有限公司,辽宁阜新 123000

收稿日期:2018-05-10 修回日期:2018-07-12 出版日期:2018-08-28 发布日期:2020-11-25
作者简介:师建国(1977—),男,河北南宫人,博士,讲师,主要从事机械系统的动态设计与控制以及机械系统创新设计方面的教学与科研工作。E-mail:jianguo_shi@163.com。
基金资助:
国家自然科学基金资助(51774161)。

Multi objective optimization of shearer drum parametersand its influence on strength of rocker arm

SHI Jianguo^1,2, GAO Guangcai³, TENG Rui¹

1 College of Mechanical Engineering,Liaoning Technical University,Fuxin Liaoning 123000,China;
2 China National Coal Association,Dynamic Research for High-End Complete Integrated Coal Mining Equipment and Big Data Analysis Center,Fuxin Liaoning 123000,China;
3 Fuxin Jinguang Mining Machinery Manufacturing Co.,Ltd.,Fuxin Liaoning 123000,China

Received:2018-05-10 Revised:2018-07-12 Online:2018-08-28 Published:2020-11-25

摘要/Abstract

摘要： 为降低采煤机滚筒工作时的截割比能耗和载荷波动,以提高采煤机安全使用性能,优化设计采煤机滚筒直径、叶片螺旋升角以及滚筒截深等参数。通过建立优化目标函数和约束条件,以改进的遗传算法为优化问题的求解算法,对采煤机滚筒参数进行多目标优化;使用有限元软件和疲劳寿命分析模块分析优化前后采煤机摇臂的应力分布和疲劳寿命循环次数,分析优化前后滚筒工作载荷对采煤机摇臂安全使用性能的影响。研究表明:优化后的采煤机滚筒比能耗值指标平均降低45.6%,载荷波动系数指标平均降低1.3%;优化后的摇臂壳体应力极值相比优化前的极值降低12.34%,滚筒参数优化后,滚筒载荷波动被降低,从而使摇臂壳体应力同步降低,低于设计的安全许用应力;臂壳体各薄弱点的疲劳寿命循环次数满足采煤机设计的使用寿命要求;滚筒参数优化改善了采煤机摇臂的安全使用性能。

关键词: 采煤机滚筒, 多目标优化, 结构优化, 摇臂强度, 疲劳寿命

Abstract: In order to reduce the cutting ratio of cutting ratio and load fluctuation in the working of the shearer drum,and improve the safety performance of the shearer,the parameters of the diameter of the shearer drum,the spiral angle of the blade and the cutting depth of the drum were optimized.Through the optimization of the objective function and the constraint conditions,the improved genetic algorithm was used to solve the optimization problem,and the parameters of the shearer drum were optimized.The stress distribution and fatigue life cycle times of the shearer's rocker arm before and after the optimization as well as the influence of working load of drum on safety performance of shearer rocker arm before and after the optimization were analyzed by using the finite element software and the fatigue life analysis module.The study shows that the optimized shearer drum has an average reduction of 45.6% in specific energy consumption and an average of 1.3% in the load fluctuation index,and the maximum stress value of the shell of the rocker shell is reduced by 12.34% compared with the extreme value before the optimization,and that optimization of drum parameters improves the safety performance of shearer rocker.

Key words: drum of coal mining machine, multi-objective optimization, structure optimization, arm strength, fatigue life

中图分类号:

X936

师建国, 高广财, 滕睿. 采煤机滚筒参数优化及其对摇臂安全使用性能影响[J]. 中国安全科学学报, 2018, 28(8): 55-60.

SHI Jianguo, GAO Guangcai, TENG Rui. Multi objective optimization of shearer drum parametersand its influence on strength of rocker arm[J]. China Safety Science Journal, 2018, 28(8): 55-60.

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采煤机滚筒参数优化及其对摇臂安全使用性能影响

Multi objective optimization of shearer drum parametersand its influence on strength of rocker arm

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