Stepped flexible grain cleaning mechanism imitating earthworm movement characteristics

Abstract

The invention relates to a stepped flexible grain cleaning mechanism imitating earthworm movement characteristics, and belongs to the field of agricultural machinery. The mechanism comprises a machineframe, wherein side plates are arranged in front the front side part and the rear side part, power driven systems and stepped flexible cleaning and screening mechanisms are installed on the two sideplates, wherein each power driven system comprises a driving shaft A, a driving shaft B, a belt pulley A, a belt pulley B, a cam A, a cam B, a shaft base A, a shaft base B, a push-pull rod A, a push-pull rod B, a pressure spring A and a pressure spring B, and each stepped flexible cleaning and screening mechanism comprises a supporting rod A, a supporting rod B, a supporting rod C, a supporting rod D, a supporting rod E, a fixed screen, a floating screen A, a floating screen B, a floating screen C, a floating screen D, a floating screen E, a floating screen F, a floating screen G, a floating screen H and a connecting screen. The mechanism is studied and designed according to the motion characteristic of the earthworm, during operation, the upper convex bending and the lower concave flattening conversion are carried out through each screen combined body, so that different amplitudes and vibration frequencies are formed, separated materials and impurities are continuously thrown upwardsin the conveying process to complete the cleaning operation, and the mechanism has the characteristics of being unique and novel in structure, good in cleaning and separating effect, high in operationefficiency, stable and reliable in operation and wide in application range.

Description

technical field [0001] The invention belongs to agricultural machinery, and mainly relates to a cleaning operation mechanism on a grain cleaning machine tool. Background technique [0002] Due to the deficiencies and defects in structural design, most of the currently used grain cleaning sieves are rigid integral, and the movement mode is plane reciprocating motion, which cannot make the front and rear of the sieve body have different amplitudes and frequencies, and the layering of materials during operation And the adaptability is poor, and the separation effect of material pushing and miscellaneous is not ideal. At the same time, when the air flow of the fan passes through the flat surface of the sieve body during the separation operation, it is difficult to form a vortex of sufficient strength and quantity between the air flow and the surface of the sieve body, resulting in an unsatisfactory separation effect of grain and impurities, low operating efficiency and poor clea...

AI Technical Summary

Problems solved by technology

[0002] Due to the deficiencies and defects in structural design, most of the currently used grain cleaning sieves are rigid integral, and the movement mode is plane reciprocating motion, which cannot make the front and rear of the sieve body have different amplitudes and frequencies, and the layering of materials during operation Poor adaptability, and the separation effect of material push and debris is not ideal

At the same time, when the air flow of the fan passes through the flat surface of the sieve body during the separation operation, it is difficult to form a vortex of sufficient strength and quantity between the air flow and the surface of the sieve body, resulting in an unsatisfactory separation effect of grain and impurities, low operating efficiency and poor cleaning effect. and poor quality

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