【摘要】 以微型小麦联合收获机采用的横向轴流脱粒装置为研究对象,在额定喂入量下,对其滚筒转速、凹板间隙、导向板升角、筛孔尺寸等参数进行了正交试验和回归试验,并通过DPS等软件对试验数据进行统计分析,得出试验范围内滚筒转速、凹板间隙、导向板升角、筛孔尺寸对凹板分离物中含长茎秆率、籽粒破碎率、夹带籽粒率、脱不净率等指标的影响规律,优化确定了该脱粒装置的最佳参数组合:筛孔尺寸为14 mm、导向板升角为10°、凹板间隙为16 mm、滚筒转速为660 r/min,含长茎秆率、含杂率、夹带籽粒率、脱不净率、籽粒破碎率分别为3.1%、39.5%、0.6%、0.01%、0.01%。更多还原

【Abstract】 Taking the horizontal axial threshing unit of the miniature wheat combine for hills and mountains as the research object,the speed of the roller,concave gap,and angle of the guide plates were researched in the orthogonal mesh size experiment under the rated capacity feed.The roller speed,concave gap,angle of the guide plates were researched in the regression testing.Then by using the DPS and other software,the statistical analysis of test data was got.The influence curve of the roller speed,the concave gap,the angle of the guide plates,mesh size to the ratio of the long-stem,the grain breakage,entrainment,threshing without a net were obtained.The regression equation was built.The optimum operating point for the mini-combine was the mesh size of 14 mm,the angle of guide plate of 10°,the concave clearance of 16 mm and roller speed of 660 r/min.Accordingly,long-stem rate was 3.1%,impurity rate was 39.5%,entrainment rate was 0.6%,the rate of threshing without a net was 0.01%,and grain breakage rate was 0.01%.更多还原