Authors

Abstract

To address the high rate of grain loss in the two-stage harvest of buckwheat, a pickup-tooth conveyor belt type buckwheat pickup device was developed to mitigate the grain loss in the buckwheat pickup process. The critical components of the pickup mechanism and conveyor mechanism were designed, and the essential parameters were determined. The operational efficiency of pickup-tooth conveyor belt type buckwheat pickup device was verified through field orthogonal test. The field test results indicate that the loss rate is most significantly affected by the speed of the pickup device, followed by the tilt angle of the pickup-tooth. The forward speed of the machine exerts minimal influence. After the multi-objective parameters of the regression equation model were optimized, the optimal parameters of the factors were obtained: the forward speed of the machine of 0.8 m/s, the pickup speed of 1.1 m/s, as well as the pickup-tooth tilt angle of 0°, Under the above condition, the loss rate of buckwheat grain reached 6.92%.

Abstract in Chinese

针对荞麦两段式收获过程中籽粒损失率较高的问题，设计了一种扒齿输送带式荞麦捡拾装置，以减少荞麦捡拾过程中的籽粒损失。对关键零部件扒齿捡拾机构和输送机构进行了设计，并确定了关键参数。通过田间正交试验验证扒齿输送带式荞麦捡拾装置的工作效果。田间试验结果表明，扒齿线速度对损失率影响最大，扒齿的倾角次之，机器前进速度的影响最小。对建立的二次回归模型进行多目标承参数优化后，得到各因素最佳参数组合：机器前进速度为0.8 m/s，当捡拾速度为1.1 m/s，扒齿倾角为0°，在上述条件下，荞麦籽粒的损失率达到最小值为6.92%。