【摘要】 针对稻谷机械脱粒后的带柄问题,在农业物料特性检测装置上利用专用夹具对稻谷穗头谷粒与粒柄、粒柄与枝梗以及枝梗与主茎秆之间不同受力角度下的连接力进行了研究与测定。试验结果表明,稻谷品种、生长部位、受力角度对连接力的大小均有影响,其中受力角度的改变对连接力的影响最显著,沿轴线方向连接力较大,逆轴线方向连接力较小。分析表明,稻谷机械化收获过程中脱粒元件对水稻穗头打击力沿穗轴方向时带柄率较低。更多还原

【Abstract】 Aimed at have some petioles in threshing,experimental studies on connection forces between grain and petiole,petiole and branch,branch and caulis,with special clamp on the testing equipment of agricultural material,were carried out.The testing results show that the breed,position and the force of direction all have effects on the connection force and the effect of the force of direction is the most significant.The connecting force is higher following the axes direction and lower in the contrary direction.Analysis shows that the percentages of petiolated grains are lower when the hit force follows the axes direction of spike in mechanical threshing.更多还原