Kinetic Analysis And Virtual Prototype Design Of The Dual Disc Mower Crucial Components

Traditional mechanical design is often designed to improve the empirical formula based on relevant information and similar products, and subject to trial and machine performance testing prototype test many times, through the application of the limitations of this study static design of virtual prototyping technology, short cycle design excellent overall performance dual disc mower to meet the development needs of alfalfa industry in Inner Mongolia in order to improve the economic efficiency of farmers and herdsmen has important practical significance.This topic through theoretical calculations choose double disc mower performance parameters, completed the preliminary design of the prototype theory of the double disc mower, cutting blades for mechanical analysis, the maximum blade stress4.42e+008N/m, the maximum displacement of1×10-3m, the maximum strain was1.269×10-3m;through the model simulation double disc mower lifting mechanism analysis, applying a force to the hydraulic cylinder as the objective function is optimized to achieve four-bar linkage lift design, optimization results displayed cylinder lifting force from3490N down to the3229N; through the cutter virtual prototype testing, the optimal speed for the blade edge57.01m/s, the forward speed of2.76m/s, the length of the blade edge line of work is34.06mm, the number of blades is3, the recut of the smallest is14.52%; through finite element analysis software Ansys Workbench won the double disc mower main vertical shaft vibration natural frequencies and mode shapes, combined with modal test validation, double the resulting disc mower calculate the relative error of the natural frequency of the main vertical shaft and the test frequency is less than10%of the absolute value of the correlation coefficient of0.9891. Each mode shapes coincide with the natural frequency of the fundamental frequency of experimental modal model and finite element model of good correlation, as proposed to improve the structure of the double disc mower vibration performance improvements designed to provide a basis.Research shows that the virtual prototype technology for dual disc mower assembly design, finite element analysis and motion simulation can improve the overall performance, shorten development cycles, improvement suggestions for follow a similar model structure provided.