悬臂式齿轮箱体力学分析方法研究  

Mechanical Analysis Method of Cantilever Gearbox

作　　者：王珏 宋诗瑶[1] 张睿 Wang Jue1, Song Shiyao1, Zhang Rui2(1 Department of Information Engineering, Liaoning Economic Vocational Technological Institute, Shenyang 110122, China） （2 School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China)

机构地区：[1]辽宁经济职业技术学院信息工程系,辽宁沈阳110122 [2]东北大学机械工程与自动化学院,辽宁沈阳110819

出　　处：《机械传动》2018年第5期8-13,共6页Journal of Mechanical Transmission

基　　金：国家重点基础研究发展计划(973)(2014CB046303);国家自然科学基金(51405072)

摘　　要：悬臂式齿轮箱与传统齿轮箱在结构和受力状态上有较大差别,利用传动齿轮箱体的共振力学分析方法可能得不到准确的箱体疲劳位置。以某型采煤机截割部悬臂齿轮箱体为研究对象,将静力学分析与局部共振分析结合,分析箱体在齿轮传动系统内部激励和截割荷载外部激励共同作用下的力学特性。静力学分析考虑了轴向力偏心及由齿轮啮合力产生的转矩对箱体受力状态的影响。局部共振分析基于采煤机截割测试,得到几种典型工况下箱体振动信号的频域特性并与箱体固有特性进行对比。研究结果表明,高应力和大变形是由低频截割冲击(准静态载荷)和局部共振共同造成的,忽略其中某一种因素都会造成箱体疲劳分析的不准确。该研究结论与工程实际吻合较好。The cantilever gearbox and the traditional gearbox have great difference in the structure and the force condition. The resonance mechanical analysis method of traditional gearbox could not get the accurate fatigue position of the gearbox. Taking a type of shearer cutting unit cantilever gearbox as the research object,the statics analysis and local resonance analysis are used to analyze the mechanical characteristics under the internal incentive and cutting load external excitation. The statics analysis takes into account the influence of the axial force,eccentricity and the torque generated by the gear meshing force on the force state of the case. Based on the shearer cutting test,the local resonance analysis is carried out,and the frequency domain characteristics of the vibration signals of several typical cases are obtained,and compared with the natural characteristics of the box. The results show that high stress and large deformation are caused by low frequency impact（ quasi static load） and local resonance. Neglecting one of these factors will lead to inaccurate analysis of box fatigue. The research result is in good agreement with the engineering practice.

关 键 词：悬臂式齿轮箱体 局部共振 振动特性实验 静力学分析 

分 类 号：TH132.41[机械工程—机械制造及自动化]