组合式油菜脱粒装置设计与物料运动轨迹分析

Design of Combined Rape Threshing Device and Analysis of Rape Cane Movement Trail

为有效提高油菜脱粒分离效率和降低损失率,设计了一种组合式油菜脱粒装置。应用运动学分析方法和高速摄像技术对物料在伸缩拨齿作用下进入到纵向轴流脱粒滚筒喂入口的迁移轨迹进行了分析和高速摄像观察,利用ADAMS软件对秸秆在纵向轴流脱粒滚筒中的运动特征进行了仿真分析。结果表明,轴流脱粒滚筒安装角度为20°和伸缩拨齿初始相位角0°条件下,可以实现物料的流畅迁移;物料在轴流脱粒滚筒中沿壳体内壁作圆周螺旋运动,钉齿与物料的撞击主要作用在圆周平面内。

A tangential-longitudinal axial combined threshing and separating device was designed in order to reduce the loss of the rape when harvested.Kinematic analysis and high speed photograph were carried out on the course of the material flowed into the entrance of longitudinal roller,and the simulation analysis on the movement characteristics of rape cane moved in the longitudinal roller was done also by using the software ADAMS.The result showed that the materials could be flowed smoothly when the installing angle of longitudinal roller was 20° and the initial phase angle of telescopic tooth mechanism was 0°.The trajectory of rape cane moved in the longitudinal roller was a spiral along the inner wall of the roller shell.The impact between rape cane and teeth occurred in the radial plane.