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

The hydraulic excavator is a very important multi-functional large-scale engineeringmachinery and is widely used in various industries such as transportation, water conservancyand hydropower project and other industries. The design and research of hydraulic excavatoris becoming more and more important as its crucial role in raising labor productivity. In thehydraulic excavator industry of China, as the long development cycles, high costs and thebackward design methods of new product, causing the product to aging, lack of marketcompetitiveness. The maturing application of virtual prototyping technology provides a strongbasis to solve these problems.Firstly, establishing the three-dimensional solid model of the hydraulic excavator usingPro/E on the basis of the study of its working device. Then, building its virtual prototypesystem in the dynamics simulation software of ADAMS and completing the pre-treatment andverify of the model.Using ADAMS/View module simulates and analysis virtual prototype mechanicalsystem’s working scope of the hydraulic excavator, getting the parameters size of hydraulicexcavator performance and the scope of work of the envelope curves. According to theanalysis of the digging resistance and excavator bucket digging force status, getting the hingepoint of the force and the corresponding curve of boom, stick, bucket and other components.The results showed that: compared to the real values, the errors of the simulation values ofthe maximum digging radius and depth controls within6%. And the results of simulationanalysis of hydraulic excavator are basic composite to the actually work.Finally, parameterized to the hydraulic excavator, we can conclude that the transmissionof the bucket linkage is related to rocker and the length of the connecting rod, stick and rocker,the distance between the two hinge points of the arm and the bucket hinged. Through changethem, we can change the transmission ratio of the bucket linkage, and thereby improve theexcavator bucket digging force. That is to say optimized the working device of the hydraulicexcavator. Across the experiment and research to the transmission ratio, we can draw theconclusion that the transmission ratio reach the maximum value of1.4787within the range of the design variables DV₁, and this is the optimal value.