切纵流联合收获机小麦喂入量预测的试验研究

为及时获知切纵流联合收获机在田间收获时的喂入量,该文将切纵流联合收获机的切纵流脱粒分离装置在室内建成切纵流脱粒分离试验台并进行喂入量为1～8kg/s的小麦脱分性能试验,通过采集切流滚筒,喂入轮和纵轴流滚筒的脱分功耗,对切纵流脱粒分离装置脱分功耗进行分析,推导出喂入量与纵轴流滚筒净脱分功耗之间的关系,并用采集小麦随机喂入量脱分功耗的方法对切纵流脱粒分离试验装置的喂入量进行预测验证。结果表明,利用纵轴流滚筒净脱分功耗可以较准确的预测切纵流联合收获机在小麦收获中的喂入量,在喂入量≤6kg/s时,预测误差≤0.89%;喂入量在7～8kg/s时,预测误差在1.02%～1.42%之间。

Experimental study on wheat feed rate of tangential-axial combine harvester

To timely inform the combine harvester feed rate when the combine harvester was harvesting in field, the core components of tangential drum, the assisting feeding drum and longitudinal-axial drum taken from the tangential-axial combine harvester were used to build tangential-longitudinal-axial threshing-separating test-bed in the laboratory. The performance experiments of wheat threshed and separated with the feed rate of 1-8 kg/s were executed on the tangential-longitudinal-axial threshing-separating test-bed. The power consumption of the tangential drum, the power consumption of the assisting feeding drum and the power consumption of longitudinal-axial drum were measured on the test-bed. Mathematical formulas between the feed rate and longitudinal-axial drum power consumption were derived based on analysis the wheat threshed and separated power on the tangential-longitudinal-axial threshing-separating test-bed. The predicted feed rate of wheat was verified by executed the randomly feed rate experiment on the tangential-longitudinal-axial threshing-separating test-bed. The results showed that the wheat feed rate of the test-bed was accurately predicted by the derived mathematical formula. When the wheat feed rate was less than 6 kg/s, the prediction error was less than 0.89%. When the wheat feed rate was 7-8 kg/s, the prediction error was 1.02-1.42%.