The Simulation And Optimization Of Hydraulic Excavator Working Device Based On ADAMS

As an important Engineering machinery,hydraulic excavator is playing a more and more important role in the modernization, working device as the main actor of excavator's basic movements, its reasonable designing, reliable usability, convenient manipulation are more and more concerned by the market.Therefore, the research for working device of excavator is necessary.Because of the longer designing cycle, higher costs, harder prediction for product's potential problems, the traditional product's designing and development process has been unable to adapt to the competitive market. Therefore, using the efficient, multi-functional virtual prototype to guide the research of excavator's working device is more necessary. In this paper,we make the mini excavator whose bucket capacity is 0.28m3 as the design prototype, firstly we established a working device model by using the three-dimensional modeling software UG, then by adding related restraints and loads,we established virtual prototype model in the virtual simulation software ADAMS; secondly, through doing Kinematics and dynamics analysis on the established virtual prototype model, we achieved main parameters of the excavator's working scope and the curves of force of hinge point ; in the third , through optimizing bucket linkage mechanism, the transmission ratio of shovel mechanism had been greatly improved; finally, we established virtual prototypical model of Shovel mechanism's hydraulic system, and carried out simulation on mechanical-hydraulic system of the working device by using ADAMS / Hydraulics module, through optimizing some corresponding parameters of the hydraulic system based on the result of simulation, we achieved very stable transmission in certain range.