液态施肥机分配机构空间凸轮设计与试验  

Design and Test of Spatial Cam for Liquid Fertilizer Assigned Machinery

作　　者：周文琪[1] 王金武[1] 潘振伟[1] 唐汉[1] 王奇[1] 多天宇 

机构地区：[1]东北农业大学工程学院,哈尔滨150030

出　　处：《农业机械学报》2015年第11期64-69,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(51205056);'十二五'国家科技支撑计划资助项目(2013BAD08B04)

摘　　要：为满足液态施肥机转子式转换器空间凸轮机构运转平稳、防止液肥泄漏与施肥量精准的性能要求,建立了空间凸轮数学模型。应用Visual Basic 6.0开发空间凸轮优化软件,得到凸轮的平均圆柱半径为37 mm以及轮廓曲线图,应用Pro/E软件对空间凸轮机构进行三维建模与运动学仿真,验证了该空间凸轮机构设计的合理性。进行试验台试验,当液压泵压力0.4 MPa、输出轴转速69.75 r/min时,所测施肥量基本相同,且喷肥针只在空间凸轮的推程到回程阶段喷肥。结果表明:空间凸轮机构运转平稳,符合设计要求。In order to satisfy the performance requirements of spatial cam mechanism in rotary converter of liquid fertilizer applicator, such as stable working and precise liquid fertilization, a mathematical model of spatial cam was established. The software for optimizing the spatial cam was developed by using Visual Basic 6. 0. The average radius of cylinder was got as 37 mm and curve profile of spatial cam was obtained. Three-dimensional model and kinematics simulation of spatial cam mechanism were established by using Pro/E software, which verified the design reasonability of spatial cam mechanism. Finally, the mechanism was tested on the test-bed. The result showed that when the pump pressure is 0.4 MPa and the output shaft speed is 69.75 r/min, the fertilizer consumptions are almost the same at different measurement time, and the picking hole mechanism only sprays liquid fertilizer on the rise to fall travel process of converter＇s spatial cam. The results show that the proposed spatial cam mechanism could work smoothly that meets the design requirements of spatial cam.

关 键 词：液态施肥 机转子式转换器 空间凸轮 仿真 

分 类 号：S224.21[农业科学—农业机械化工程]