中文摘要：

为解决玉米种子脱粒过程中籽粒损伤严重的问题,根据鸡喙优良的切入籽粒间隙无损伤离散大片籽粒的能力,以及裸手差速低损伤脱粒的特性,设计了新型玉米种子仿生脱粒机,主要包括离散辊、脱粒辊、差速辊等。并对仿生脱粒机与TY-4.5型玉米脱粒机进行对比试验,结果显示：对郑单958玉米果穗,仿生脱粒机未脱净率为0.30%,破损率为0.31%,且玉米芯完整无破损;TY-4.5型脱粒机未脱净率为0.29%,破损率为0.90%,玉米芯破损严重。对先玉335玉米果穗,仿生脱粒机未脱净率为0.05%,破损率为0.35%,玉米芯完整无破损;TY-4.5型脱粒机未脱净率为0.09%,破损率为0.95%,玉米芯破损严重。在两机未脱净率相近情况下,玉米仿生脱粒机籽粒破损率较TY-4.5型脱粒机明显偏低,玉米芯无破损,含杂少,可用于种子玉米果穗脱粒。

英文摘要：

In order to issue the problem of heavy damage of kernels during threshing corn ear,the bionic thresher was designed according to the excellent ability of beak inserting chink among kernels with low damage and the low cracked rate of differential thresh with bare hand. The thresher mainly includes discrete rod,threshing rod and differential rod. The correlative experiment of the bionic thresher and TY-4. 5 thresher was done. As for the Zhengdan958 corn ear,the unthreshed grains rate of the bionic thresher was 0. 30%,the cracked grains rate was 0. 31%, and the corn cob was unbroken; the unthreshed grains rate of the TY-4. 5 thresher was 0. 29%,the cracked grains rate was 0. 90%,and the corn cob was broken heavily. As for the Xianyu335 corn ear,the unthreshed grains rate of the bionic thresher was 0. 05%,the cracked grains rate was 0. 35%, and the corn cob was unbroken; the unthreshed grains rate of the TY-4. 5 thresher was 0. 09%,the cracked grains rate was 0. 95%,and the corn cob was broken heavily. The results showed that the cracked grains rate of the bionic thresher was less than that of the TY-4. 5 thresher under the similar unthreshed grains rate,and the corn cob was unbroken. The bionic thresher was suitable for threshing the seed corn ear.