Threshing roller having adjustable diameter

Abstract

The invention relates to a threshing roller having adjustable diameter, and belongs to agricultural machinery. A thread and an axial chute groove are respectively formed in the left end and the rightend of a roller shaft, an adjusting nut, an adjusting driving disc, a left supporting seat, a left sliding seat, a transitional connecting supporting seat, a right sliding seat, a right supporting seat and an adjusting follow-up disc are sequentially arranged on the roller shaft in a sleeving manner from left to right, a telescopic left supporting rod is fixedly mounted on the left supporting seat, a telescopic middle supporting rod is fixedly mounted on the transitional connecting supporting seat, and a telescopic right supporting rod is fixedly mounted on the right supporting seat; and connecting blocks are fixedly mounted at external ends of the telescopic middle supporting rod, tooth seat plates are hinged to the adjusting driving disc and the left sliding seat respectively through left connecting rods, and are hinged to the adjusting follow-up disc and the right sliding seat respectively through right connecting rods, and the connecting blocks are respectively hinged to the left sliding seat and the right sliding seat through central connecting rods. The diameter of the threshing roller can be adjusted according to needs of threshing tasks, and the threshing roller is novel, unique and reasonable in structure, simple and convenient in adjustment operations, high in adaptability, high in working performance and good in threshing quality.

Description

technical field [0001] The invention belongs to agricultural machinery, and mainly relates to a diameter-adjustable threshing drum. Background technique [0002] Traditional threshing cylinders, including the bar-shaped threshing cylinder, the spike-toothed threshing cylinder, and the bow-toothed threshing cylinder, cannot realize the adjustment and change of the cylinder diameter, that is, the diameter of the cylinder is fixed. In the actual threshing operation, since the diameter of the drum cannot be changed, the threshing distance between the drum and the threshing concave plate is fixed. When the output of the threshed grain is different or the feeding amount is different, the threshing quality is affected, including the cleaning rate. and grain breakage rate and other operating indicators. When the crop yield is low or the feeding amount is small, the operating efficiency of the machine tool decreases and the cost of threshing operation increases; when the crop yield ...

AI Technical Summary

Problems solved by technology

[0002] Traditional threshing cylinders, including the bar-shaped threshing cylinder, the spike-toothed threshing cylinder, and the bow-toothed threshing cylinder, cannot realize the adjustment and change of the diameter of the cylinder, that is, the diameter of the cylinder is fixed.

In the actual threshing operation, since the diameter of the drum cannot be changed, the threshing distance between the drum and the threshing concave plate is fixed. When the output of the threshed grain is different or the feeding amount is different, it will affect the threshing quality, including the cleaning rate. and grain breakage rate and other operating indicators

When the crop yield is low or the amount of feed is low, the operating efficiency of the machine tool will decrease, and the cost of threshing operation will increase; when the crop yield is high or the amount of feed is large, the cleaning rate and grain recovery rate will decrease, and the grain breakage rate will increase, resulting in grain loss

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