Embarking on the need of agriculture yield estimation and yield capacity, and the need of wheat threshing in agricultural colleges and research institutes, this text gives the design of miniature Direct-Current (DC) electric threshing machine using storage battery as power source based on the characteristics of the DC which is easy for storage. At the same time, the threshing machine is driven by a DC motor, considering the field threshing of the yield capacity and the yield estimation and the reality needs of small sample nicety threshing. The device has the advantages of light weight, small volume, simple operation, easy maintenance, convenient carrying.
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