PARAMETER OPTIMIZATION AND EXPERIMENT OF BRUSH ROLL GRAPEVINE COLD-PROOF SOIL CLEARING DEVICE

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.