小型山地烤烟烟杆拔杆机旋转辊刀系统模态分析  

Modal analysis of the rotating roller knife system of a small pole jack for flue- cured tobacco stem used in mountainous areas

作　　者：李华[1] 张大斌[1] 罗瑜[1] 雷焱[1] 张纪利[2] 

机构地区：[1]贵州大学机械工程学院,贵州贵阳550025 [2]广西中烟工业有限责任公司,广西南宁530001

出　　处：《现代机械》2015年第6期46-49,共4页Modern Machinery

基　　金：广西中烟工业有限责任公司科技项目"山地烤烟地膜;烟杆机械化回收关键技术及多功能机的研制"(合同编号:1212014015)

摘　　要：针对一种掘蔸式拔杆机的执行机构旋转辊刀系统,为进一步优化该系统的作业性能,利用UG进行了实体建模,采用ANSYS Workbench进行有限元模态分析,获得了该系统的前6阶的固有频率,以及各主要工作部件的典型振型。研究结果表明:1阶模态(105.76 Hz)主要表现为辊刀系统绕轴线的旋转运动;在2阶模态(261.51 Hz)和3阶膜态(261.99 Hz)下,辊刀系统表现为整体弯曲振动;在4阶模态(314.42 Hz)和5阶模态(314.72 Hz)下,辊刀系统主要表现为局部弯曲振动;在6阶模态(326.18 Hz)下,辊刀系统表现为局部弯曲扭转振动。上述系统模态属性,可为辊刀系统结构振动特性的描述及整机作业性能的优化提供依据。In order to further optimize the operation and improve the performance of the roller knife system of a small pole jack dialing flue- cured tobacco stem,the solid model of the roller knife system was built with UG. The first six modes' frequencies and the corresponding typical mode of vibration of each working parts were obtained through finite element model analysis. The results showed that the roller knife system around the axis of rotation comes from the resonance at the first mode( 105. 76 Hz); the overall bending vibration comes from the resonance at the 2nd modal( 261. 51 Hz) and 3rd modal( 261. 99 Hz); the local bending vibration comes from the resonance at 4 order modal( 314. 42 Hz) and 5 order modal( 314. 72 Hz); the local bending torsional vibration comes from the resonance at the 6th order modal( 326. 18 Hz). The above finding can provide the basis for the analysis of the vibration characteristics of the roller knife system and the optimizing of the mechanical system performance.

关 键 词：拔杆机 辊刀系统 ANSYS WORKBENCH 模态分析 

分 类 号：S126[农业科学—农业基础科学] S225