异速双轴流脱粒装置的研制

Diverse-velocity Threshing Device with Double-axletree Flow

全喂入联合收割机的高损失率、高含杂率和高破碎率一直是我国全喂入联合收割机发展的瓶颈。为此,从研发一种全新的异速双轴流脱粒装置着手,将前脱粒滚筒的转速设计为786r/min,后脱粒滚筒的转速设计为1001r/min;作物先喂入转速较低的前脱粒滚筒,使易脱粒的谷粒脱粒下来;然后将尚未脱净的茎秆投入后脱粒滚筒,使剩余的较不易脱粒的谷粒在较高转速和更强力的打击下脱离出来;再辅以脱粒室端盖及凹板筛、振动筛的优化设计,为联合收割机提供一种脱净率高而破壳率低的高效谷物脱粒装置。

The high loss rate, high impurity content and high damage rate of whole-teeding combine had oeen the choke points of combine development for a long time. In this paper, a new diverse-velocity threshing device with double-axletree flow was studied and developed to provide an effective rice threshing device with higher threshing performance and a lower percentage of kernel damage. In the new device, the rotate speed of anterior threshing roller is 786r/min and that of latter threshing roller is 1001rpm. During operation, crop is put in the anterior threshing roller with low rotate speed and the grain that easier to threshing is threshed. Other grain, which is hard to threshing, is threshed in the latter threshing roller with high rotate speed. Besides, the lid of threshing room, concave boult and vibration boult were all optimally designed.