期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2018

44

2

221-224

10.13331/j.cnki.jhau.2018.02.020

湖南省科学技术厅重点项目（2006GK2009）；

本校为第一机构

为获得水稻芽种直播机排种性能良好的槽孔形状、槽孔螺旋角、槽轮工作转速,运用离散元分析软件EDEM对半圆形、“V”形、梯形、钩勺形4种槽孔槽轮排种器的排种性能进行仿真分析和台架试验验证。结果表明:当槽轮槽孔形状为钩勺形、槽孔螺旋角为13.46°、槽轮工作转速为21.09 r/min时,排种器排种穴径合格率为96.37%,穴粒数合格率为95.43%,伤芽率为6.54%,可满足农艺要求。

In order to determine the groove shape, groove hole helix angle and groove wheel working speed, the performance of direct seeding slot of rice bud seeder with with semicircular, V–shape, trapezoidal and hook–shape was simulated by EDEM and testified by bench test. The results show that when the slot groove shape is a hook–spoon–shaped slot, the spiral angle of the slot is 13.46°, and the working speed of the slot wheel is 21.09 r/min, the pass rate of the seed–metering device is 96.37%, the pass rate of the point number is 95.43%, and the sho...