Longitudinal axis flow nested differential type corn threshing device

Abstract

A longitudinal axis flow nested differential type corn threshing device comprises a front bearing seat, a threshing roller, a cylindrical concave plate screen, a concave plate screen gear ring, an upper flow guide cover, a rear bearing seat, a rear support, a lower cleaning screen, a belt wheel, a concave plate screen driving gear, a middle support and a front support; the threshing roller comprises a transmission shaft, a conical cylinder, a coarse threshing roller, a fine threshing roller, a crushing and guiding roller and a differential mechanism; the differential mechanism comprises a stargear, a star gear fixing seat, a fixed connecting rod, a first bearing, a flat key, a threshing roller driving gear, a second bearing, a transmission shaft fixing seat, a fixing rod, a fixed baffle plate, a blocking plate, a star gear support and a roller gear ring; the transmission ratio of the threshing roller driving gear and the star gear is different from the transmission ratio of the star gear and the roller gear ring, the rotation speeds of the coarse threshing roller, the fine threshing roller and the crushing and guiding roller are different, and the rotation directions thereof are same. The threshing efficiency and quality are improved, the damage and loss of corn grains can be reduced, and the winding and blocking of impurities such as straws are reduced.

Description

technical field [0001] The invention relates to an agricultural machine, in particular to a vertical axial flow nested differential type corn threshing device. Background technique [0002] Threshing is an important process for mechanized corn harvesting. Threshing device is a key component of corn harvesting machinery. The threshing device mainly adopts axial flow technology, that is, the corn material moves along the axial direction of the threshing device. The axial flow threshing drum can be assembled relative to the traveling direction of the corn harvesting machine to form a longitudinal axial flow threshing device; The technical features of the longitudinal axial flow threshing device are: the corn stays in the threshing device for a long time, thereby prolonging the corn threshing time and improving the corn threshing efficiency; Other devices such as cleaning and separation are more compactly installed in the whole machine. [0003] However, there are many varieti...

AI Technical Summary

Problems solved by technology

[0003] However, there are many varieties of corn in my country, large differences in planting density, and large fluctuations in the moisture content of corn during the harvest season, resulting in straw blockage, broken grains, grain loss, and unclean threshing after the corn enters the longitudinal axial flow threshing system, which not only affects the harvest quality of corn The decline of corn harvesting machinery has also increased the failure rate of corn harvesting machinery, which has a serious impact on the increase of corn harvest

The reasons for these problems are: the threshing drum of the existing longitudinal axial flow threshing device is an integrated structure, which maintains the same rotating speed to exert mechanical action on corn materials in different states, and lacks the adaptability to the characteristics of corn materials; The harvester is fixed, and once impurities such as straw are entangled in it, it is difficult to quickly remove it, and it will aggravate the degree of blockage

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