Grain cleaning double-layer sieve longitudinal horizontal dip angle servo adjusting mechanism

Abstract

The invention discloses a grain cleaning double-layer sieve longitudinal horizontal dip angle servo adjusting mechanism and belongs to agricultural machinery. The rear portion of an upper sieve is hung on the upper portion of the rear side of a sieve shoe, and the rear portion of a lower sieve is supported on the lower portion of the rear side of the sieve shoe; the front portion of the upper sieve is installed on the upper sides of a left side board and a right side board of the sieve shoe through an upper sieve angle adjusting and supporting mechanism composed of left and right upper slides,an upper sieve sliding block, an upper sieve connection rod, an upper slide pin shaft, a servo electric cylinder A and an upper sieve dip angle sensor; and the front portion of the lower sieve is installed on the lower sides of the left side board and the right side board of the sieve shoe through a lower sieve angle adjusting and supporting mechanism composed of left and right lower slides, a lower sieve sliding block, a lower sieve connection rod, a lower slide pin shaft, a servo electric cylinder B and a lower sieve dip angle sensor. Longitudinal horizontal dip angle adjustment of the twolayers of sieves can be achieved for different grain varieties and contents of impurities inside grains, the structure is novel and reasonable, the adaptability is high, the operation efficiency is high, and the operation quality is good.

Description

technical field [0001] The invention belongs to agricultural machinery, and mainly relates to a double-layer sieve mechanism for grain cleaning. Background technique [0002] In the current grain cleaning mechanism, the double-layer sieve structure composed of the upper sieve and the lower sieve arranged parallel to each other is a traditional design structure. The vertical and horizontal inclination angles of the upper and lower sieves cannot be adjusted. consistent. In many years of production and use, it has been found that the traditional double-layer sieve cannot be adjusted for different types of grains and the amount of impurities contained in the grains, and has the defect of poor adaptability, and the uniform distribution of grains on the sieve surface is slow, which cannot be fully effective. Utilizing the effective area of ​​the sieve surface also reduces the grain cleaning quality and operating efficiency. On the premise of ensuring the cleaning quality, adjust ...

AI Technical Summary

Problems solved by technology

In many years of production and use, it has been found that the traditional double-layer sieve cannot be adjusted for different types of grains and the amount of impurities contained in the grains, and has the defect of poor adaptability, and the uniform distribution of grains on the sieve surface is slow, which cannot be fully effective. Utilizing the effective area of ​​the sieve surface also reduces the grain cleaning quality and operating efficiency. On the premise of ensuring the cleaning quality, adjust the horizontal inclination of the upper and lower sieves and increase the lateral movement of the sieve surface to achieve the purpose of improving the cleaning efficiency.

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