Threshing and sorting system for combined harvester

Abstract

The invention discloses a threshing and sorting system for a combined harvester. A crop feeding port (1) is positioned at the upper-left front part of a thresher room (2); the length of the cross section of the crop feeding port (1) is larger than 540 mm; a weed discharge port (8) is positioned at the lower-right rear part of the thresher room (2); a threshing drum is mounted at the front upper part of the thresher room; a drum cover (7) is positioned above the threshing drum (6); a sorting vibration sieve (3) is positioned below the threshing drum (6) and a concave plate sieve (5); a blower (9) is positioned at the lower front part of the sorting vibration sieve (3); a main auger (11) is positioned at the rear part of an air outlet (18) and below the sorting vibration sieve (3); a rethreshing device (12) is positioned at the rear part of the threshing drum (6) and above the sorting vibration sieve (3); a stem cutting device (10) is positioned at the weed discharge port (8); and a thresher tail hood (4) is positioned at the upper rear part of the thresher room (2).

Description

technical field [0001] The invention relates to a threshing and cleaning system of a combine harvester. Background technique [0002] The thresher is the core component of the grain combine harvester. It plays the role of threshing, separation and cleaning in the working process of the harvester, which determines the production quality and productivity of the machine to a large extent. At present, there are three main types of thresher structures for crawler-type full-feed combine harvesters: [0003] 1. The traditional single horizontal axial flow drum thresher structure. The advantages are stable and reliable performance, simple and mature structure. However, since the threshing drum is placed horizontally, the crop feeding port is usually located at the left end of the drum in the axial opening, and the width of the feeding port affects the effective length of the threshing drum. The threshing separation ability is insufficient due to the decrease of the effective leng...

AI Technical Summary

Problems solved by technology

[0005] 3. Single vertical axial flow drum thresher structure

[0006] The length of the cross-section of the crop feeding port of the traditional combine harvester is less than 500mm. When the size is greater than 500mm, the problem will be: the effective working length of the thresher chamber is shortened, and it is impossible to complete the threshing, which affects the threshing quality. The grain is discharged out of the machine along with the waste grass, resulting in food waste

Images