Small combine harvester low loss rate threshing device

Abstract

The invention discloses a low-loss-rate threshing device of a small combine harvester. The low-loss-rate threshing device comprises an axial-flow threshing component and a secondary threshing component. The secondary threshing component is fixed on a straw outlet of the axial-flow threshing component and used for performing secondary threshing upon straw discharged from the straw outlet. Compared with the prior art, the low-loss-rate threshing device can perform secondary threshing and has the advantages that grain loss rate can be greatly reduced, jamming of seedling ears in the threshing device is unlikely to occur, and performance of the low-loss-rate threshing device can meet the national standard requirements; the whole threshing device is moderate in axial length, simple in structure and excellent in performance, an overall structural layout and smoothness of the small combine harvester are unaffected and improved on the basis on an existing structure, remaking of the whole machine is omitted, available resources can be fully utilized, investment cost of the device can be lowered, and promotion and application are benefited.

Description

technical field [0001] The invention relates to a threshing device, in particular to a low loss rate threshing device for a small combine harvester. Background technique [0002] The combine harvester is a harvesting machine that can complete the harvesting, threshing, and debris removal of cereal crops at one time, and then directly obtain grain from the field. Compared with manual harvesting, it can reduce threshing losses, reduce labor intensity, and save labor. It is a field operation. Indispensable agricultural machinery; some existing small combine harvesters are equipped with axial-flow threshing devices, and one end of the threshing drum is provided with a straw outlet. For threshing, the flow path of the seedlings in the threshing device should not be too long, generally around a circle, to avoid clogging. The problem is that the path of the seedlings in the threshing state is short, difficult to remove, and the loss rate of grains is relatively high. High, not up ...

AI Technical Summary

Problems solved by technology

[0002] The combine harvester is a harvesting machine that can complete the harvesting, threshing, and debris removal of cereal crops at one time, and then directly obtain grains from the field. Compared with manual harvesting, it can reduce threshing losses, reduce labor intensity, and save labor. It is a field operation. Indispensable agricultural machinery; some of the existing small combine harvesters are equipped with an axial-flow threshing device. One end of the threshing drum is provided with a straw outlet. For threshing, the flow path of the seedlings in the threshing device should not be too long, generally around a circle, to avoid clogging. The problem is that the path of the seedlings in the threshing state is short, difficult to remove, and the loss rate of grains is relatively high. High, not up to the national standard

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