小区小麦育种收获机锥型脱粒滚筒性能试验

Experiment on conical threshing cylinder performance of plot wheat breeding seed combine harvester

小区小麦育种收获机锥型脱粒滚筒体积小、功耗低,可加快脱粒滚筒轴向物料输送,提高清机效率。为了进一步研究锥型脱粒滚筒作业性能,结合自行研制的纵轴流锥型滚筒脱粒装置,通过改变锥型滚筒主要结构参数进行对比试验,得出滚筒锥角及滚筒脱粒元件是影响滚筒作业性能的主要结构参数。在选取最优参数后研制出一种集钉齿、短纹杆-板齿于一体,锥角为13°的组合齿锥型滚筒,并进行试验。试验结果表明,该滚筒作业时种子破碎率为0.52%,滚筒脱粒损失率及籽粒含杂率分别为0.43%及6.23%,装置内部种子残留率为0,功耗为2.48kW,符合小区小麦育种收获要求。

The conical threshing cylinder that used in plot wheat breeding seed harvester has small volume and lower power consumption,it also can speed up the axial conveying of materials and improve efficiency of machine cleaning.In order to study the performance of conical threshing cylinder deeply,the comparison tests of different constructive parameters based on longitudinal axial conical cylinder threshing unit were carried out.The result indicated that cylinder taper angle and threshing components were main constructive parameters which could affect the performance of threshing unit.Then a kind of composite tooth conical cylinder with 13°cylinder taper angle and short-rasp-bar tooth was developed after optimal parameters were confirmed.The experimental results showed that while the machine was working,threshing loss rate was 0.43%,rate of trash content was 6.23%,remaining rate of seed was 0,power consumption of threshing unit was 2.48 kW,which could meet the demand of plot wheat seed harvester.