Authors

Abstract

Aiming at the problems of low efficiency, and low degree of mechanization of artificial soil clearing and considering that grapevines are easy to be damaged in northern China, a brush roll grapevine cold-proof soil clearing device suitable for removing soil in northern grape planting areas is studied and designed. The machine is mainly composed of a suspension device, soil removing device, hydraulic control system, telescopic device, etc. In this paper, a brush roll grapevine cold-proof soil clearing device was fabricated to investigate critical parameters such as rotation rate of soil removing device, brush spacing, and brush wire length on the machine performance. The three-factor and three-level quadratic regression orthogonal tests were carried out with the rotation rate of soil removing device, brush spacing, and brush wire length were taken as experimental factors and the soil removal rate and soil clearing distance were used as the evaluation indexes of soil clearing effect. The results show that the influence order of three factors on the soil removal rate was: rotation rate of soil removing device > brush spacing > brush wire length. The order of influence on the soil clearing distance was: rotation rate of soil removing device > brush wire length > brush spacing. The results show that when the rotation rate of the soil removing device was 248.71 r/min, brush spacing was 18.84 mm and brush wire length was 329.3 mm, the soil removal rate was 91.62% and the soil clearing distance was 11.63 cm. The relative error between the experimental verification value and the theoretical optimization value is less than 4%. This study provides the theoretical basis for the development of other types of grapevine cold-proof soil clearing devices.

Abstract in English

针对中国北方地区人工清土效率低、机械化程度低、葡萄藤容易受损等问题，研究设计了一种适用于北方葡萄种植区的刷辊式葡萄防寒清土装置。该装置主要由悬挂装置、除土装置、液压控制系统和伸缩装置等组成。本文制作了刷辊式葡萄防寒清土装置，研究了除土装置的转速、刷子间距和刷丝的长度等关键参数对机器性能的影响。以除土装置的转速、刷子间距和刷丝的长度为实验因素，进行了三因素和三级二次回归正交试验，以清土率和清土距离为清土效果的评价指标。结果表明，三个因素对除土率的影响顺序为：除土装置转速>刷子间距>刷丝长度；对清土距离的影响顺序为：除土装置转速>刷丝长度>刷子间距。结果表明，当除土装置的转速为248.71r/min，毛刷间距为18.84mm，刷丝长度为329.3mm时，除土率为91.62%，清土距离为11.63cm。实验验证值与理论优化值之间的相对误差小于4%。本研究为开发其他类型的葡萄防寒清土装置提供了理论依据。