Design and Simulation of Automatic Alignment Device Based on Four-bar Linkage Mechanism
In order to solve the problem of the accuracy of the row alignment when harvesting radish in the harvester,this paper takes the radish as the research object and designs an automatic row alignment device based on the principle of four-link mech-anism.In the lateral detection,the offset of radish on the ridge was converted into the angle offset of the connecting rod to calculate the lateral offset distance of radish.In the longitudinal detection,a ground floating detection mechanism was designed to obtain the undulation of ridge surface which the ridge surface was used as the criterion.Be combining with the angle sensor,the digging depth of the shovel could be adjusted.Then,the finite element static analysis and dynamic simulation of the transverse probe rod and the ground floating detection mechanism were conducted in SolidWorks and RecurDyn.The results indicated that the horizontal transverse detection rod and ridge floating detection mechanism met the requirements of strength and stiffness in statics,the ridge floating de-tection mechanism had good effect of ridging,and the average deviation depth of the excavation shovel was kept within 20.5 mm.This study has reference significance for the smooth introduction of radish harvesting device during radish harvesting.
line detection mechanismground floatingstatic analysiskinematic simulation
万方数据
维普
