Threshing and cleaning device for longitudinal axial flow combine harvester

Abstract

The invention discloses a threshing cleaning device of a longitudinal-axial-flow combine harvester, and belongs to the technical field of combine harvesters. The threshing cleaning device comprises a threshing separating device, a cleaning device body and a stalk chopper. The threshing separating device comprises a threshing machine body and a longitudinal-axial-flow roller driven by a power device. The longitudinal-axial-flow roller comprises a feeding-in part and a roller body part, and the roller body part sequentially comprises a threshing section, a separating section and a weed-discharging section. A feeding-in shell is fixed to the portion, corresponding to the feeding-in part, of the threshing machine body, a threshing section roller cover is arranged on the upper portion, corresponding to the threshing section, of the threshing machine body, and a threshing section concave plate is arranged on the lower portion, corresponding to the threshing section, of the threshing machine body. A separating section roller cover is arranged on the upper portion, corresponding to the separating section, of the threshing machine body, a separating section concave plate is arranged on the lower portion, corresponding to the separating section, of the threshing machine body, and the diameter of the separating section roller cover is larger than that of the threshing section roller cover. The feed quantity is large in harvesting, the function of returning stalks to the field is achieved, working efficiency is improved, kinds of crops are harvested, and the requirements for earnings of a user are met.

Description

technical field [0001] The invention belongs to the technical field of combine harvesters, and in particular relates to a threshing and cleaning device for a longitudinal axial flow combine harvester. Background technique [0002] At present, driven by factors such as national policy guidance and the transfer of rural labor force, the speed of domestic land transfer has accelerated, the area of ​​a single plot has increased, the roads for machine farming have become wider, and the yield per mu of crops has continued to increase. Users have higher and higher requirements on the working efficiency of combine harvesters. [0003] In the Central Plains region of China, crop planting conditions are: rotation of wheat and corn, rotation of wheat and soybean, rotation of wheat and rice. Users generally hope that the combine harvester basically does not need to replace or replace less parts. Only by adjusting the speed of the drum can it not only harvest wheat, but also harvest soy...

AI Technical Summary

Problems solved by technology

The threshing and separation capabilities of this type of machine are limited, and it is difficult to break through the 5kg / s feeding rate of harvested wheat, resulting in the machine working efficiency not meeting user needs

Especially when harvesting wet wheat, the entrainment loss is large, the drum is easy to be blocked, and the working efficiency of the machine is low

There are also double transverse axial flow drum models on the market, but when harvesting dry wheat, this model has a lot of prolapse, a large cleaning load, and low work efficiency.

[0006] In addition, according to the requirements of national regulations, the combine harvester should be equipped with a stalk chopper to realize the return of straw to the field. However, the current "horizontal axial flow" model equipped with a stalk chopper has a chopping effect, especially the effect of chopping rice straw. Unsatisfactory, the main disadvantages are that the stalks are too long after chopping, and the spreading area is too narrow, etc.

[0007] In addition, a wheel-running full-feed combine harvester disclosed in Chinese utility model patent ZL201320484653.2 and a wheel-run full-feed combine harvester disclosed in Chinese utility model patent ZL201320484703.7 are essentially a single For vertical axial flow combine harvesters, the engine of this model is arranged on one side of the single longitudinal axial flow separation device, resulting in the disadvantage that the width of the cleaning room is limited and the cleaning area is insufficient when the width of the whole machine is limited. cause lower work efficiency

Moreover, the drum of this model cannot realize stepless speed regulation, and the adaptability to crop varieties is poor

[0008] At present, there is another single vertical axial flow combine harvester on the market. The stalk chopper is additionally arranged at the rear of the machine, which makes the length of the machine body longer.

Moreover, this model cannot realize the convenient replacement of the concave plate, and the adaptability to crop varieties is poor

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