采煤机扭矩轴的扭断理论算法与试验研究  

Torsion theory algorithm and experimental study on torque shaft of shearer

作　　者：徐鹏 王甜 刘春生 Xu Peng;Wang Tian;Liu Chunsheng(School of Mechanical Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China;School of Safety Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)

机构地区：[1]黑龙江科技大学机械工程学院,哈尔滨150022 [2]黑龙江科技大学安全工程学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2024年第2期216-222,共7页Journal of Heilongjiang University of Science And Technology

基　　金：国家自然科学基金项目(51674106);黑龙江省省属高校基本科研业务费项目(2019-KYYWF-0714)。

摘　　要：针对滚筒式采煤机扭矩轴的传统理论设计方法和工况条件与实际工作中的差异性问题,采用弹塑性变形分析方法建立扭矩轴的扭断修正模型,利用试件扭断试验验证理论模型的准确性,通过正交试验分析影响扭断参数的因素,给出符合实际的弹塑性抗扭截面模量算法。结果表明,加载方式对扭断时极限扭矩值影响显著,所占比重达到63%,卸荷槽半径影响不显著,依据试验结果在扭断理论公式中增加加载影响因子,确定了慢速加载、快速加载和振荡加载的影响因子系数分别为1、0.99和0.96。扭矩轴扭断试验真实反映了扭矩轴断裂的实际工作状态,通过试验研究所修正的扭矩轴扭断理论算法,对规范扭矩轴的理论设计提供了参考。This paper attempts to address the differences between the traditional theoretical design,working conditions and the actual work for the torque shaft of the drum shearer.The study involves establishing a torsional fracture correction model of the torque shaft with elastic-plastic deformation analysis method;verifying the accuracy of the theoretical mode by the specimen torsional fracture test;analyzing the factors affecting the torque fracture parameters by orthogonal test;and giving the algorithm of elastic-plastic torsional cross-section modulus in conformity with the reality.The results show that the loading mode has a significant influence on the ultimate torque value at the time of torsion fracture,accounting for 63%,and has non-significant influence on the radius of the unloading groove.Based on the test results,the loading influence factor is increased in theoretical formula for torsion fracture,and the influencing factor coefficients of the slow loading,fast loading,and oscillating loading are determined to be 1,0.99,and 0.96,respectively.The torque shaft torsion fracture test truly reflects the actual working state of torque shaft fracture.Through the experimental research,the modified torque shaft torsion fracture theoretical algorithm provides a basis for standardizing the theoretical design of torque shaft.

关 键 词：采煤机 扭矩轴 扭断试验 正交试验 

分 类 号：TD421.5[矿业工程—矿山机电]