A high-speed centrifugal threshing device for a grain combine harvester

Abstract

The invention provides a high-speed centrifugal threshing device for a grain combine harvester, comprising a stator drum, a rotary concave sieve, a power input gear set, a transmission gear set and a grass breaking device; the rotary concave sieve includes a concave sieve and a External tooth top cover, the two ends of the concave plate screen are fixedly installed with external tooth top covers; the power input gear set is located at one end of the concave plate sieve, and the power input gear set is meshed with the external tooth top cover gear pair, It is used to rotate the rotary concave plate screen; the input end of the transmission gear set is meshed with the gear pair of the outer tooth top cover, and the output end of the transmission gear set is connected with the grass breaking device; the grass breaking device is located in the concave The other end of the sieve. The invention integrates the threshing and grass breaking device to effectively optimize the structure of the drum. At the same time, the whole device adopts gear transmission. Compared with the traditional pulley transmission structure, the speed of the threshing device is more stable, the structure is more compact, and the working performance is reliable. Extended working life.

Description

technical field [0001] The invention relates to the technical field of a grain threshing and separating device on a combine harvester, in particular to a high-speed centrifugal threshing device for a grain combine harvester. Background technique [0002] The vertical axial flow threshing and separation device is an important part of the combine harvester. When the combine harvester is working in the field, it will feed the harvested grain into the threshing drum for threshing and separation. Affects the work quality of the combine harvester. Compared with the cutting flow drum, it has longer threshing time, higher cleaning rate, and better threshing and separation performance. on the harvester. [0003] At present, the device and method for the longitudinal axial flow grain threshing separation on the combine harvester mainly include: Chinese patent CN201520994619.9 invented a longitudinal axial flow differential speed threshing drum, and the front and rear threshing drums...

AI Technical Summary

Problems solved by technology

[0005] During the threshing process of the existing longitudinal axial flow threshing drum of the grain combine harvester, the stalks are hit by the high-speed rotating threshing gear rod, and the breakage rate is high, which leads to poor separation effect of the combine harvester and aggravates the machine The phenomenon of energy consumption, the present invention provides a high-speed centrifugal threshing device for a grain combine harvester, which integrates the threshing and grass breaking device, and removes the cover plate and other components, effectively optimizing the structure of the drum. At the same time, the whole device adopts gear Transmission, compared with the traditional pulley transmission structure, makes the speed of the threshing device more stable, the structure is more compact, the working performance is reliable, and the working life is prolonged

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