影响板式玉米摘穗机籽粒破碎和损失的因素分析

Analysis of Influence Factor on Seed Damage Rate and Loss Rate in Harvesting Corn

采用摘穗板式摘穗机构正交实验方法,对在玉米摘穗过程中影响籽粒破碎和籽粒损失率的四个因素—摘穗板的形式、拉茎辊转速、籽粒含水率、机具前进速度进行了分析。结果表明,籽粒破碎率受籽粒含水率的影响最大,受摘穗板形式和拉茎辊转速影响次之,受前进速度的影响较小;籽粒损失率受拉茎辊转速的影响最大,受摘穗板形式的影响次之。籽粒的含水率较低(30％左右)、摘穗板的形式为弯板、拉茎辊转速为中速度(600～700rpm)时进行玉米的摘穗作业时,综合指标较好。

In this article, four factors affecting seed damage rate and loss rate are analyzed by orthogonal test on picker. The results showed that, the first effect on seed damage is seed water content, the second is speed of ejector roller and shape of picking board, and the last is moving speed of picker; the first effect on seed loss is speed of ejector roller, the second is shape of picking board. When working on low seed water content (30%), curving picking board, moderate ejector roller speed (600 - 700 rpm), the quality of harvester is the best.