Research Of Several Key Technologies And Simulate Of The Anti-resonance Sieve

Traditional vibrating machines are widely used, anti-resonant vibrating machine have more advanced properties than them. Although the theory of anti-resonant has been studied much, it is not maturely applied in the industrial field. The anti-resonance machine is a new kind machine, which is based on the anti-resonance theory that when working at the anti-resonance point, the vibration amplitude of the vibrating isolation system will be the minimum with the work body having an appropriately amplitude. Anti-resonance machines have more superiorities than the traditional ones, and become a research hotspot at home and abroad. In this paper, the anti-resonant vibration screen as the object of study, a number of key issues during design and manufacturing process are analyzed, and some of the structure is improved.First, design two structures and determine which one can better meet the manufacturing process and use requirements by finite element static analysis. According to those analyses, the unreasonable structural design will be modified. Then, the finite element method is used to make dynamic analysis. Harmonic response analysis will be used to predict the location of anti-resonant point. And at the last, the paper designs a method for transient analysis under the load of harmonic excitation to observe the anti-resonance phenomenon and dynamic stress.As there are some deficiencies of the traditional method of static analysis. Two new methods are applied and the results are compared. As the structure of the plate spring has been simplified in the structure analysis, so the stress of the plate spring is not accurate. In order to obtain more accurate stress of plate spring, the plate spring components are analyzed individually. Then calculate structure fatigue life according to the result of the structure analysis.Finally, the paper studies a type of metal-rubber springs. Its dynamic stiffness, static stiffness, the maximum stress changes are analyzed and calculated. The results show that the compound spring stiffness has a larger increment, stiffness increases with the rubber hardness, and show linear stiffness still. In the case of the stiffness, the stress required are both meet, using the composite spring can reduce the thickness of the spring.