油菜排种器的设计与试验研究

北方春油菜多数以条播为主,但此播种方法浪费种子,不能达到油菜的播种要求。为此,以北方油菜种子杂303号油菜种子为试验材料,通过对油菜种子物理特性的研究,设计了窝眼轮式排种器,并对排种器进行静态试验,研究了转速、种子盒内种子容积对排量和破损率的影响。试验表明:窝眼轮转速和种子盒内种子容积对排量和破损率影响显著;窝眼轮转速为35.73r/min时,窝眼轮的排种量随种子盒内种子容积的增加而增大,种子的破损率随种子盒内种子容积的增加而增大;当种子盒内种子的容积占种子盒容积的2/3时,窝眼轮的排种量随窝眼轮转速的增大而减少,种子的破损率随窝眼轮转速的增大而增大。该排种器播种精度高,可满足春油菜的播种要求。

Design and Experimental Research on Metering Device for Rape Seed

In general , most northern spring rape is given priority with drilling , but this sowing method is a waste of seed , and cannot meet the requirements of rape seeds .In this paper , taking the northern rape seeds 303 hybrid rape seeds as the experimental material , through the study of physical characteristics on rape seed , the eye socket wheel device has been designed , and static test was carried out on the metering device with the speed , the seed box volume on the dis-placement and the influence of the damaging rate .Test results showed that:the eye socket wheel speed and seed box vol-ume have a significantly influence on displacement and the damaging rate .Eye socket wheel speed is 35.73 r/min, with the increase of the seed box volume , the eye socket round metering quantity increases , with the increase of the seed box volume , the damage rate of corn seed increases;when the seed box volume accounts for two-thirds of the seed box vol-ume , eye socket round metering quantity decrease with litter of eye wheel speed increase , damage rate of corn seed with eye wheel speed increases .The sowing device is in high precision , it is easy to satisfy the requirement of the spring rape planting .