可调行距插秧机秧箱调节机构丝杠疲劳寿命预测

浙江农业学报

可调行距插秧机秧箱调节机构丝杠疲劳寿命预测

（1.安徽农业大学工学院，安徽合肥 230036； 2.安徽农业大学农学院，安徽合肥 230036）

出版日期:2016-04-25 发布日期:2016-04-27

Prediction of fatigue life for screw of adjustment mechanism of seedling box of adjustable spacing transplanter

(1. School of Engineering， Anhui Agricultural University， Hefei 230036， China；2. School of Agriculture， Anhui Agricultural University， Hefei 230036， China）

Online:2016-04-25 Published:2016-04-27

摘要/Abstract

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。

关键词: 可调行距插秧机, 秧箱, 梯形丝杠, 螺纹牙, 疲劳寿命

Abstract: 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.

Key words: adjustable spacing transplanter；seedling box, sliding screw, thread, fatigue life

朱德泉1，姚亚芳1，武立权2，蒋锐1，熊玮1. 可调行距插秧机秧箱调节机构丝杠疲劳寿命预测[J]. 浙江农业学报.

ZHU Dequan1， YAO Yafang1， WU Liquan2， JIANG Rui1， XIONG Wei1. Prediction of fatigue life for screw of adjustment mechanism of seedling box of adjustable spacing transplanter[J]. .