PARAMETER OPTIMIZATION AND EXPERIMENT OF ORCHARD DOUBLE ROW DITCHING-FERTILIZING MACHINE

Abstract

In order to improve the fertilization uniformity and stability of the orchard double row ditching-fertilizing machine, the design was optimized. Firstly, the factors affecting the movement of the fertilizer particles were analysed in combination with the kinetic model of the fertilizer particles during the falling process. Secondly, the influence of each factor on the fertilization uniformity was analysed by single factor variance. Finally, the Box-Behnken central composite method was used to establish a mathematical model of fertilization uniformity of the orchard double row ditching-fertilizing machine, and regression statistical variance, response surface, and contour lines were used to analyse the influence of each mechanism parameter on the fertilization uniformity. The test results show that: when the test parameters of the conveyer belt speed is within 165~235 r·min-1, the advancing velocity is within 0.8~1.2 m·s-1, and the guide plate angle is changed within the range of 15~45°, the degree of influence of each factor on the fertilization uniformity from high to low is the conveyer belt speed, advancing velocity, the angle of the guide plate, and the conveyer belt speed; when the conveyer belt speed is 214 r·min-1, advancing velocity is 1 m·s-1, and the angle of the guide plate is 37°, the fertilizer coverage reaches 100%, and the fertilization uniformity is increased from 86.31% to 90.73%, and the fertilization stability is improved. The research results provide a theoretical basis for the design and optimization of orchard ditching-fertilizing machine.