油菜育种播种机自动供种系统设计

设计了以电磁力为动力源,与小区育种播种机相配套的自动供种系统,并对关键部件的结构尺寸以及运动进行分析,该系统通过共轴双盘格供种结构,可以连续完成34个小区的供种.通过对油菜种子在不同供量与给定的调整时间内连续供种试验,表明4种供量的油菜种子随着调整时间的增大,调整量与供种均匀性变异系数均减小,在8s时,供种均匀性差异的波动趋于平缓,其供量为7 g油菜种子的供种均匀性变异系数最小,为7.59％,在该供量下,油菜种子的损失率为0.97％,供种误差均小于3 mm.通过与人工等量隔种对比试验表明,在2种供种系统中,4种供量的油菜种子供种均匀性差异均小于1.5％.

Design of Automatic Supplying Seed System for Plot Seeder of Rape

Automatic supplying rape seed system for plot seeder was designed. It took electromagnetic force as power source and went with plot seeder. Key parts of structure and motion were analyzed. Automatic supplying seed system was able to accomplish supplying seed for 34 plots. By the supplying seed experiment without interruption at the different supply amount in the given time, the result showed that adjusting value and uniformity CV decreased with increasing of time. The uniformity CV was at the minimum range when the time was 8s and the minimum uniformity CV for rape seed was 7.59% at supply amount of 7 g. Loss rate for rape seed was 0.97% and error of supply seed was less than 3 mm. Compared with manual operation, the uniformity CV between the two metering devices was blow 1.5% for rape seed.