摘要
为预测可调行距高速水稻插秧机秧箱调节机构梯形丝杠的使用寿命,应用相关疲劳理论和方法,推导梯形丝杠螺纹牙的疲劳寿命计算公式。利用Adams软件和Ansys软件建立调节机构的刚柔耦合模型并仿真,得到梯形丝杠最大轴向载荷为53.8 N,并在Ansys软件中建立螺纹牙的有限元模型,通过静力学分析得出最大范·米塞斯应力为188 MPa,小于材料的屈服极限。以静力学分析结果为初始条件,利用Ansys/fe-safe软件进行螺纹牙疲劳分析,得出梯形丝杠工作寿命为3 598 h,满足插秧机工作性能要求。
To predict fatigue life for sliding screw of adjustment mechanism of seedling box,the calculation formula of fatigue life was derived by the related theory and method. The rigid coupling model of adjustment mechanism was built with Adams and Ansys software. The real working condition of adjustment mechanism of seedling box was imitated and the axial load of screw was gained. The maximum Von Mises stress of thread was 188 MPa,which was analyzed by the finite element method based on Ansys software. The maximum Von Mises stress was less than strength limit of the material. Based on the initial conditions,fatigue life of thread was analyzed with Ansys / fe-safe software.The results showed that the working life of sliding screw was 3 598 h and met the requirements of rice transplanter.
出处
《浙江农业学报》
CSCD
北大核心
2016年第4期693-698,共6页
Acta Agriculturae Zhejiangensis
基金
国家自然科学基金项目(51403005)
国家农业科技成果转化项目(2014GB2C300002)
安徽省长三角科技联合攻关项目(1301C063006)
关键词
可调行距插秧机
秧箱
梯形丝杠
螺纹牙
疲劳寿命
adjustable spacing transplanter
seedling box
sliding screw
thread
fatigue life
