Design of Stubble-breaking Ditching Colter Based on SolidWorks and Its Strength Analysis  

基于SolidWorks的破茬开沟犁刀的设计与强度分析(英文)

作　　者：何磊[1] 周亚立[1] 刘向新[1] 赵岩[1] 

机构地区：[1]新疆农垦科学院机械装备研究所,新疆石河子832000

出　　处：《Agricultural Science & Technology》2011年第10期1441-1443,1452,共4页农业科学与技术（英文版）

基　　金：Supported by National Science and Technology Support Plan of China(2011BAF07B01)~~

摘　　要：Stubble-breaking device is a key working part of no-tillage seeder in stub land,and directly affects planting quality of seeder.Based on the current domestic used stubble-breaking device,a new kind of stubble-breaking ditching colter was designed.To study its strength property and reduce trouble in work,the three-dimensional model of stubble-breaking ditching colter was established based on SolidWorks.By using Cosmos,it was carried out the finite element analysis.The distortion and stress of stubble-breaking ditching colter in work were obtained,and the weak link of strength was found.The result showed that the maximum stress of stubble-breaking ditching colter was 5.862×108 N/m2,and the maximum twisted displacement was 2.648 mm.The stubble-breaking ditching colter was carried out improved design.Based on Cosmos,the static analysis was carried out.It showed that the strength and rigidity of improved stubble-breaking ditching colter were obviously improved.The research provided reference basis for optimal design of the stubble-breaking ditching colter.破茬装置是茬地免耕播种机的关键工作部件,直接影响着播种机的播种质量,本文在目前国内所使用的破茬装置的基础上,设计出一种新型的破茬开沟犁刀。为研究其强度特性,减少工作时的故障,应用SolidWorks建立了破茬开沟犁刀的三维模型,用Cosmos对其进行了有限元分析,得到破茬开沟犁刀在工作时的变形和应力大小,找出了其强度薄弱环节。结果表明,破茬开沟犁刀的最大应力为5.862×108N/m2,最大扭曲位移为2.648mm,对破茬开沟犁刀进行了改进设计,应用Cosmos进行静态分析,表明改进后破茬开沟犁刀的强度和刚度明显提高,为其优化设计提供了参考依据。

关 键 词：Stubble-breaking ditching colter No-tillage sowing Finite element analysis Static analysis 

分 类 号：S222.1[农业科学—农业机械化工程]