论文部分内容阅读
为适应水稻穴直播的种植要求,设计了4种不同结构槽轮排种器.借助离散元分析软件EDEM对4种不同结构的槽轮排种器进行仿真分析,并进行试验验证.台架试验结果表明:当排种轮槽孔形状为钩勺型槽孔、槽孔螺旋角为14.01°、排种轮工作转速为21.09 r/min时,得到最佳穴径合格率和穴粒数合格率分别为96.42％、95.23％.用EDEM仿真与台架试验结果基本相同,表明用离散元法对槽轮排种器进行仿真分析具有可行性.“,”In order to meet the requirements of planting rice directly in the hill,4 kinds of different structure groovewheel seeding device were designed.The EDEM,a discreet element analysis software,was used to simulate and analyze the above 4 types of grooves,and then the tentative was done for the trough planers with different structures.The results showed that when the groove was hookedly-shaped,the angle of the slot was 14.01°and the rotating speed of seed row wheel is 21.09 r/min,with the best rate of average hill diameter being 96.43％ and the rate of seed number in the hill being 95.23％,in which the EDEM simulation and test results were basically the same,indicating that the discreet element method for simulation of groove-wheel seeding device was feasible.