The paper presents the results of a survey on the ability to vent and dropping materials of the lift-over bridge for cassava roots with a lifting capacity of 60-80 tons based on the experimental planning model. The content of the survey on the influence of technological and technical parameters on the ability of venting/dropping materials on cassava trucks when the system of lifting-flip equipment uses transmission and hydraulic control. The research results build regression equations to show the influence relationship between the three basic structural parameters as lifting load, lift angle, distance A. Optimizing multi-objective function with Box Behnken algorithm model, the optimal conditions are as follows: A 5000 (mm), lift angle 39.88 (degree), lifting load 60.000 (kg). Under these conditions, the highest guessing performance is 86,6%, then the objective function achieves the expected value of product clearance 99.9 (%), specific energy consumption 6.9 (kW / h). There is no much difference in the results between the regression model and the experimental results, almost similar.
Keyword
Car lift-flip bridge, experimental planning, dropping materials, cassava roots