A vertical corn grain harvester

Abstract

The invention discloses a vertical-type threshing device and a vertical-type threshing harvester employing the same. The threshing device comprises a small belt pulley, a drive shaft, a vertical-typethreshing roller outer cylinder, a vertical-type threshing roller inner cylinder, a driving bevel gear, a driven bevel gear, and an obtuse angle threshing element. The drive shaft is fixedly connectedto a frame, and the small belt pulley is fixedly connected to the right end of the drive shaft. The vertical-type threshing roller outer cylinder is installed at the central part of the drive shaft,and the driving bevel gear is disposed at the central part of the drive shaft. The vertical-type threshing roller outer cylinder is fixedly connected with the frame, and the vertical-type threshing roller inner cylinder is disposed in the vertical-type threshing roller outer cylinder. The driven bevel gear is disposed in the vertical-type threshing roller inner cylinder. The driving bevel gear isengaged with the driven bevel gear. The obtuse angle threshing element is fixed on the external surface of the vertical-type threshing roller inner cylinder. The threshing device enables the overall length to be effectively reduced, effectively improves the threshing performance, effectively improves the distribution uniformity of threshed objects on a sifter, remarkably reduces the harvesting loss, and improves the harvesting quality.

Description

technical field [0001] The invention relates to the technical field of threshing devices, in particular to a vertical threshing device and a vertical corn grain harvester. Background technique [0002] As an advanced stage of corn mechanized harvesting, direct harvesting of corn kernels is of great significance for improving the mechanization level of corn production. At present, the commonly used models at home and abroad are mainly tangential flow or axial flow threshing and harvesting. Although the tangential flow threshing harvester is short in length, the harvest loss and grain breakage are serious due to the short threshing time, so it is widely used in applications. has been greatly restricted. [0003] Axial flow threshing is divided into two structures: vertical axial flow and horizontal axial flow threshing. The horizontal axial flow threshing is less effective due to the limited length of the drum (compared with the limited threshing time of cross-flow threshing)...

AI Technical Summary

Problems solved by technology

At present, the commonly used models at home and abroad are mainly tangential flow or axial flow threshing and harvesting. Although the tangential flow threshing harvester is short in length, the harvest loss and grain breakage are serious due to the short threshing time, so it is widely used in applications. has been greatly restricted

[0003] Axial flow threshing is divided into two structures: vertical axial flow and horizontal axial flow threshing. The horizontal axial flow threshing is less effective due to the limited length of the drum (compared with the limited threshing time of cross-flow threshing). The fruit ear has to go through the turning movement from the first tangent to the rear axis, so its reliability is difficult to improve

In addition, it is difficult to ensure uniform distribution of the exudate on the screen surface, which affects its separation effect

Although longitudinal axial flow threshing has been widely promoted and applied in the world, because the length of the threshing drum is more than 3 meters (some even longer), although the threshing time is effectively prolonged, the structure of the whole machine is relatively large, which is difficult to adapt to. Working requirements for small plots

[0004] Axial flow threshing will also lead to uneven distribution of extracts on the screen surface, and it is difficult to reduce harvest loss

In addition, its transmission has changed from the original horizontal transmission to the vertical transmission, which not only affects the ear feeding, but also makes its transmission structure more complicated.

At the same time, due to the consistent gap between vertical axial flow threshing, it is difficult to ensure the grain removal rate of high-humidity corn

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