三组非圆齿轮行星轮系振动发生器的动平衡分析
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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.
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.
引文
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[3]韩泽群,姜波.加工番茄品种多性状综合评价方法研究[J].中国农业科学,2014,47(2):357-365.
[4]韩泽群,姜波.加工番茄品种多性状综合评价方法研究[J].中国农业科学,2014,47(2):357-365.
[5]李成松,坎杂,谭洪洋,等. 4FZ:-30型自走式番茄收获机的研制[J].农业工程学报,2012(10):20-26.
[6]卢勇涛,李成松,陈永成,等.番茄收获机果实分离机构的工作原理及结构特点[J].新疆农机化,2008(4):11-13.
[7]朱兴亮,李成松,坎杂,等.加工番茄果秧分离技术发展现状分析[J].河北科技大学学报,2013(5):399-402.
[8]梁喜凤,杨犇,王永维.番茄收获机械手轨迹跟踪模糊控制仿真与试验[J].农业工程学报,2013,29(17):16-23.
[9]杨存.非圆齿轮运动学与动力学研究[D].兰州:兰州理工大学,2014.
[10]李福生.非圆齿轮[M].北京:机械工业出版社,1975.
[11]俞高红,张玮炜,孙良,等.偏心齿轮-非圆齿轮行星轮系在后插旋转式分插机构中的应用[J].农业工程学报,2011,27(4):100-105.
[12]吴序堂,王贵海.非圆齿轮及非匀速比传动[M].北京:机械工业出版社,1997.
[13] Lozzi A. Non-cicrular gears-Graphic generation of involutes and base outlines[J]. Proc. Instn. Mech. Engrs. Part C,2000,214(3):411-422.
[14]王维民,高金吉,江志农,等.旋转机械无试重现场动平衡原理与应用[J].振动与冲击,2010,29(2):212-215,232.
[15]伍良生,贺江波,张云禧,等.高速主轴在线动平衡机构驱动器设计[J].北京工业大学学报,2007(12):1233-1238.
[16]樊远,刁燕,戈鹏.基于Solid Works的曲轴动平衡分析[J].现代制造工程,2007(6):37-39.
[17]张策.机械原理与机械设计(上册)[M].北京:机械工业出版社,2004.