A corn grain combine harvester under high moisture content

Abstract

The invention discloses a corn grain combine harvester under high water content. It includes a header, an elevator, a feeding cylinder, a plate-type axial flow threshing drum, and a threshing concave plate. It is installed on the frame of the harvester obliquely upwards. The front end of the plate axial flow threshing drum is provided with a feeding auger, and several threshing plates A and B are connected to the outer surface of the threshing cylinder of the plate axial flow threshing drum. The outer end of the threshing plate A has a tooth-shaped structure, the feeding cylinder is set outside the feeding auger, the front end of the elevator is located below the header, and the rear end of the elevator is correspondingly located above the feeding auger. The threshing concave plate is composed of several cylindrical threshing tubes arranged in parallel and connected by an arc-shaped fixed plate. The threshing concave plate is coaxially arranged on the outer lower part of the plate axial flow threshing drum. There is a threshing gap between them.

Description

technical field [0001] The invention relates to a corn grain combine harvester under high moisture content, belonging to the technical field of corn harvesters. Background technique [0002] At present, corn grain direct-harvesting combine harvesters all adopt the method of feeding from the bottom to convey corn ears, and the ears are forced to press down on the ears by the chain rake bar of the conveying trough, and then transported to the front end of the auger blades fed to the threshing drum Below, under the joint action of the blade auger and the grass guide plate in the feeding cylinder, the ears of corn are forced to be transported to the threshing area of ​​the threshing drum through multiple rounds of rotation. In this feeding mode, the chain rake can easily crush the grains, and the feeding barrel of the existing corn grain direct harvesting combine has a large front and small rear structure, and the feeding blades also have a large front and small rear structure. ...

AI Technical Summary

Problems solved by technology

In this feeding mode, the chain rake can easily crush the grains, and the feeding cylinder of the existing corn grain direct harvesting combine has a large front and a small structure, and the feeding blades also have a large front and a small structure. This kind of structure is not conducive to the fast transportation of the ears to the threshing area, and the transportation time is long, and a large number of grass guide plates in the feeding cylinder will scratch and squeeze the kernels of the ears, resulting in a high rate of kernel breakage

The lower feeding method in the prior art, under the condition of high water content, the corn kernels are seriously damaged

In addition, most of the existing combine harvesters for direct harvesting of corn kernels use nail-toothed rollers for the threshing part. This threshing structure will cause great damage to the corn kernels, especially under high moisture content, the damage of the kernels is serious, and the damage of the corn kernels high loss rate

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