Efficiency threshing and cleaning device and harvester

Abstract

The invention provides an efficient threshing and cleaning device and a harvester. The device comprises a shear threshing and separating device, a feeding device, a longitudinal axial flow threshing and separating device, a variable diversion top cover, a threshed material distribution regulating device, a threshed material conveying device, a vibrating screen and a cleaning fan; the screw feedingdevice is installed between the shear threshing and separating device and the longitudinal axial flow threshing and separating device, the variable diversion separating top cover is installed on theupper portion in the longitudinal axial flow threshing and separating device; the threshed material distribution regulating device is installed on the lower portion of the longitudinal axial flow threshing and separating device; the threshed material conveying device is located below the shear threshing and separating device and the threshed material distribution regulating device; the vibrating screen is installed on the lower portion of the threshed material conveying device; the cleaning fan is located below the vibrating screen. Accordingly, threshing and separation of crops can be sufficient, threshed materials in the cleaning process are distributed more evenly and conveyed more smoothly, the threshing, separation and cleaning efficiency and performance can be significantly improved,and the device is compact in structure and high in stability.

Description

technical field [0001] The invention belongs to the field of harvesting machinery research, and in particular relates to a high-efficiency threshing and cleaning device and a harvester. Background technique [0002] The threshing and cleaning device is the core working part of the combine harvester, and its working performance directly affects the harvesting efficiency and quality. It has been found through research that improving the smooth flow and uniform distribution of materials inside can significantly improve work efficiency and performance. Chinese patent CN204811000U installs a deflector intelligent control structure in the threshing device, which can control the movement speed of crops and reduce the threshing loss, but it needs to collect signals through various sensors to control the movement of the mechanism, which is costly and lacks stability. Chinese patent CN106561172A invented a longitudinal axial flow grass discharge diversion device. The grass guide arc ...

AI Technical Summary

Problems solved by technology

Chinese patent CN204811000U installs a deflector intelligent control structure in the threshing device, which can control the movement speed of the crops and reduce the threshing loss, but it needs to collect signals through various sensors to control the movement of the mechanism, which is costly and lacks stability.

Chinese patent CN106561172A invented a longitudinal axial flow grass discharge diversion device. The grass guide arc plate and diverter strips are installed outside the longitudinal axial flow threshing drum, which solves the problem of unsmooth grass discharge caused by excessive grass discharge in the threshing drum. Pulverizer blockage and other problems

However, it only solves the blockage problem at the grass outlet, and does not improve the smooth flow of materials inside the threshing and cleaning device.

Chinese patent CN107360808A has designed a grain conveying and separating cleaning machine, in which the material in the diversion chamber is guided by the deflector, and the uniformity of distribution is improved to a certain extent, but its conveying capacity is limited, so it is not suitable for harvesting in large feeding quantities. use in homework

Chinese patent CN203181617U provides a diversion device for a harvester cleaning screen, including a bottom plate and a V-shaped diversion groove. Grains with sundries slide onto the cleaning screen through the diversion device. Accumulation will not easily occur, but the V-shaped grooves are equidistantly distributed, which does not conform to the actual whereabouts of the protruding objects, and the effect of uniform distribution is limited

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