三组非圆齿轮行星轮系振动发生器的动平衡分析  

Dynamic Balance Analysis of Three Sets of Non-circular Gear Planetary Gear Generator

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作  者:张娜[1,2] 坎杂 王丽红[1,2] 李成松 Zhang Na;Kan Za;Wang Lihong;Li Chengsong(College of Mechanical and Electrical Engineering,Shihezi University,Shihezi 832000,China;Key Laboratory of Northwest Agricultural Equipment,Ministry of Agriculture,Shihezi 832000,China)

机构地区:[1]石河子大学机械电气工程学院,新疆石河子832000 [2]农业部西北农业装备重点实验室,新疆石河子832000

出  处:《农机化研究》2019年第10期25-30,共6页Journal of Agricultural Mechanization Research

基  金:国家自然科学基金项目(51265046).

摘  要:为了提高果秧分离振动发生器的工作效率和稳定性,针对非圆齿轮啮合传动因质心变化而造成的轴上受力不平衡及振动较大等问题,对非圆齿轮行星轮系结构进行了动平衡分析。简化项目组前期提出的3组非圆齿轮行星轮系振动发生器模型,得到非圆轮系偏心质量的大小和分布,并通过对非圆齿轮行星轮系静力学分析,确定了其平衡面间距,利用质径积的分解求得了非圆行星轮系的平衡质量。利用3组非圆行星轮系虚拟模型进行运动学仿真分析,获取平衡前后轴承座支反力变化曲线并对其最大幅值进行对比分析,发现平衡后轴承座的受力明显减小,说明了3组非圆行星轮系振动发生器受力更均衡,证明了动平衡分析的正确性。该研究可为3组非圆行星轮系振动发生器装置进一步优化奠定理论基础。In order to improve the working efficiency and stability of the vibration generator for the separation of the fruit seedlings,the dynamic balance analysis of the non-circular gear planetary gear train structure was analyzed in view of the imbalance of the force,which were caused by the change of the centroid of the non-circular gear meshing transmission,on the axis and the larger vibration.The size and distribution of the eccentric mass of non-circular gear trains were obtained on the basis of simplifying the three sets of non-circular gear planetary gear train model proposed earlier in the project group.Using the static analysis of the non-circular gear planetary gear system,the balance surface spacing was determined.The equilibrium mass of the non-circular planetary gear train was obtained by the decomposition of the mass diameter product.The kinematics simulation analysis of three groups of non-circular planetary gear trains was carried out to obtain the change curve of the bearing seat back force before and after the balance.When comes to the comparison and analysis of its maximum amplitude,it was found that the force of the bearing seat after the balance is obviously reduced.The results showed that the force of the three groups of non-circular planetary gear trains is more balanced,the correctness of the dynamic balance analysis is proved.The research can lay a theoretical foundation for further optimization of three sets of non-circular planetary gear generator.

关 键 词:番茄收获机 行星轮系 非圆齿轮 运动仿真 动平衡 

分 类 号:S225.92[农业科学—农业机械化工程;农业科学—农业工程]

 

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