燕麦收获机切-轴流脱粒防缠装置参数优化试验

Parameter Optimization Test of Tangential-axial Flow Threshing and Anti-winding Device for Oat Harvester

针对燕麦机械收获过程中因茎秆破碎效果差易导致的茎秆缠绕、筛板堵塞问题,利用自行研制的切-轴流脱粒试验台开展作业优化试验,分析试验台组合参数对作业脱粒质量和防缠绕能力的影响规律。以试验台滚筒工作状态转速差和脱出物中籽粒质量为主要性能指标,开展了轴流滚筒转速、切-轴流双滚筒水平方向中心距和垂直方向高度差的正交试验。结果表明:在轴流滚筒转速800r/min、滚筒水平中心距800mm、垂直高度差50mm时,脱粒装置防缠绕性能较好,轴流滚筒转速波动在0~16r/min范围内;在轴流滚筒转速900r/min、滚筒水平中心距750mm、垂直高度差为0时,组合装置的脱粒效果较优;试验台优化后参数组合可信,破碎防缠效果提升显著,滚筒工作状态平稳。研究结果可为燕麦及其他杂粮收获机械的研制改良提供参考。

Aiming at the problem of low threshing quality and poor stalk crushing effect in mechanical harvesting of oats,the operation optimization test was carried out by using the self-grinding and cutting axial flow threshing test bed,and the influence of combination parameters on threshing quality and anti-winding ability was analyzed.The axial flow drum rotation speed,horizontal center distance and vertical height difference of the double drums was carried out based on the grain weight and the Speed difference of the axial flow drum.The test results show that:the rotation speed of the axial flow drum was 800r/min,the horizontal direction of the drum from 800mm,the vertical height difference of the drums was 50mm,the device has good crushing and anti-winding performance,the speed fluctuation of axial-flow drum is in the range of 0~16 r/min;When the axial flow drum rotates at a speed of 900r/min,the horizontal center of the drum is 750mm away from the vertical height,and the vertical height is zero,the threshing effect of the combined device is better and the threshing rate is above 63%.The comprehensive verification test shows that the optimized parameters combination of the test-bed is credible,the crushing and anti-winding effect is improved significantly,and the working state of the roller is stable.The experimental study provides a reference for the development and improvement of oat and other coarse grain harvesters.