Design and Experiment of Inertia Rocker Impact CompactionDevice

摘要

Indoor soil bin could simulate field working conditions to carry on performance test or determination of selected soil working parts or the whole machine. In order to better simulate actual field soil condition, experiments in soil bin always need hard soil. It has been proved that method of impact is more efficient than static pressure during compaction work. In order to achieve greater depth compaction effect, an inertial rocker impact compaction device was designed. The inertial rocker impact compaction device mainly consist of suspension and draft frame, gearbox, driving pulley, driven pulley, eccentric wheel, rocker and compaction plate. Motion rule of impact compaction device was analyzed by using MATLAB Runge-Kutta algorithm, impact work wascalculated and analyzed by using energy conservation law, the minimum speed of eccentric wheel for compaction plate to jump was n=118 r/min, the optimum speed of eccentric wheel was n=180 r/min. Motion of compaction device was observed by high speed camera, results showed that actual motion rule was consistent with theoretical analysis, average deviation of swing angle of rocker was 0.33°. Soil compactibility after compaction was measured, the change rule of soil compactibility was consistent with thatof theoretical work Tests of impact compaction and roller compaction were carried out both for 4 times respectively, soil compactibility after impact compaction was 2-3 times higher than that of roller compaction. The inertial rocker impact compaction device could significantly improve compaction effect of deep soil.