Single longitudinal axial flow rigid-flexible coupling corn threshing device

Abstract

The invention discloses a single longitudinal axial flow rigid-flexible coupled corn threshing device, which comprises a frame and a columnar threshing drum supported on the frame rotatably at both ends; A rigid-flexible coupling threshing unit on the edge; a hollow cylindrical concave plate screen coaxially sleeved on the outside of the threshing drum, the concave plate screen includes: a plurality of support bars extending at intervals in a spiral shape, fixed on the The first baffles on both sides of the support bar, and the lower ends are embedded into the concave plate threshing bars in the accommodating space. The present invention further reduces the broken rate of corn kernels through the threshing effect of rigid-flexible coupling, and improves the threshing rate by increasing the threshing strength.

Description

technical field [0001] The invention relates to an agricultural machine, in particular to a single longitudinal axial flow rigid-flexible coupling corn threshing device. Background technique [0002] The direct-grain corn threshing device is the development direction of mechanized corn harvesting in the future. However, most areas in my country have high moisture content at harvest, and there are higher requirements for the direct-grain corn threshing device. The vertical axial flow corn threshing device is named because the axial direction of the threshing drum of the threshing device is the same as the walking direction of the harvester. It is more widely used because of its higher threshing efficiency than the horizontal axial flow threshing device. [0003] The axial flow threshing device is composed of a threshing drum and a concave plate screen. Most of the threshing elements of the existing threshing drum are in the form of bar, nail teeth, plate teeth, etc., and are ...

AI Technical Summary

Problems solved by technology

Corn ears move passively in the threshing gap formed by the threshing drum and the concave plate sieve. Under the action of the threshing element of the threshing drum, they move in a circular spiral along the axis of the drum, and are threshed by the impact and friction of the threshing element and the concave plate sieve. However, the threshing element and the concave screen exert a line contact or point contact force on the corn ear, which has a strong impact force and rubbing strength on the kernel, especially when threshing corn with high moisture content, it is more likely to cause a large number of corn kernels. Damage Therefore, there is an urgent need for a corn threshing device suitable for high moisture content, low grain breakage rate, and high efficiency.

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