Double-helix threshing and conveying system and combine harvester

Abstract

The invention provides a double-helix threshing and conveying system and a combine harvester. The double-helix threshing and conveying system comprises two threshing spaces which are horizontally arranged in the advancing direction of the harvester at intervals front and back, each threshing space is a hollow cylindrical mounting cavity defined by a concave plate screen and a cylinder cover, and a roller is mounted in each mounting cavity. Guiding pieces are arranged on the inner wall faces of the cylinder covers at intervals and used for guiding crops entering the threshing spaces to move directionally around the axis, the rollers drive the crops to move when rotating and enters the second threshing space from the first threshing space through guiding of the guiding pieces, and therefore the lengths of working areas of the two threshing spaces are the same. Therefore, a crop threshing path passes through the length of two rollers and can fully thresh crops. The two threshing spaces are horizontally arranged in a spaced manner, so that the structure on the rack is more compact, the lengths of the two threshing working areas are the same, the threshing path long enough can be guaranteed, and the threshing effect is fully guaranteed while the overall maneuverability of the harvester is guaranteed.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a double-screw threshing conveying system and a combine harvester. Background technique [0002] The crawler combine harvester threshing system can be divided into longitudinal axial flow threshing and cleaning system and horizontal axial flow threshing and cleaning system. These two types of threshing and cleaning systems are the main structural forms currently used in the market. [0003] The length of the vertical axial flow drum is longer, allowing the crops to have time to fully threshing and separating in the drum, but if the length is too long, the length of the entire machine will inevitably be lengthened, and the machine will not be flexible enough when operating or turning, and the structure will not be compact enough. [0004] The horizontal axial flow drum mainly includes a single drum horizontal axial flow threshing system and a 1.5 drum horizontal axi...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the inability of the harvester threshing system in the prior art to simultaneously satisfy the overall mobility and threshing effect of the harvester.

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