异形孔窝眼轮式油菜排种器设计与试验

Design and Experiment on Seed-metering Device with Special Cells for Cole Seed

设计了一种异形孔窝眼轮式油菜排种器,阐述了它的结构形式及工作原理,选择了合理的窝眼布置方式。通过正交试验分析了型孔布置方式、型孔尺寸和排种轴转速对排种器排种均匀性、合格率、漏播率和重播率的影响。在最优参数组合下进行播种试验,其播种合格率为98.3%,漏播率为0.6%,重播率为1.1%,对油菜种子适应性好。

One kind of seed-metering device with special cells for cole seed was designed. The configuration and working principle was introduced. The differences between two disposal modes of cells were analyzed. And then, the capability, mainly the uniformity of the seed-metering device was tested in experiments. Based on the request of testing result, the structure of the seed-metering device was changed. Some conclusions were given in the end. The disposal modes of cells are the primary factors which affecting the working uniformity of the seed-metering device. Testing with the combination of optimal parameters, the pass percentage of seeding is 98.3%, the leakage sowing rate is 0.6 % and reseeding rate 1.1%. Generally speaking, the seed-metering device with special cells for cole seed is simple in structure and steady in working, its cells are compatible with cole seed.