2015年10月13日星期二

Vertical Dynamic Design Raymond mill

Before establishing vertical Raymond mill dynamics model to the analysis of the problem analysis program design, therefore, first introduced digital design work Raymond boundary conditions. Air spring as an important boundary condition SBM Raymond mill machine vertical kinetic model, which directly affect the dynamic behavior of the stiffness characteristics of vertical Raymond, therefore, the calculation of the air spring vertical and lateral stiffness characteristics is our first content analysis and calculation. The air spring vertical and lateral stiffness characteristics obtained, on the one hand to select a different model for the design of vertical Raymond mill air springs provide the basis for the other, for the establishment of virtual prototype based on vertical dynamics Raymond mill isolation model provide important data. Spindle is an important part of a vertical wind in front of Raymond, whose dynamic characteristics have an important influence on the dynamic characteristics of vertical grinder machine. In the course of spindle bear incentives, bearing displacement constraints and other effects from the upper and lower eccentric, its force complex and large amount of deformation, and therefore it needs to be treated as a continuous elastic body during operation. Application of multi-body dynamics theory, the spindle treated as a continuous elastomeric method is to establish the modal neutral file containing its dynamics by the finite element technique, and then replaced by rigid spindle modal neutral file set up as a flexible shaft style disaster Raymond rigid body dynamics analysis together, resulting in more accurate dynamic simulation results for vertical roller mill body. Raymond vertical dynamics of the body is the focus of this article. Understanding the dynamics of vertical Raymond dynamics we have broken grinding media so as to control the media crushing force, get the desired effect of fragmentation is very important for this purpose. Here, the application of mechanical system dynamics analysis software ADAMS Raymond were established vertical rigid body dynamics model of the whole body and rigid disaster kinetics in model, simulation analysis vertical Raymond body dynamics in both models and compare the simulation results. The results with the vertical Raymond dynamics mathematical derivation formula to compare the body to verify the correctness of the results of dynamic simulation. Raymond is generally believed that the body's dynamic behavior of vertical stiffness is subject to vibration, vibration frequency, affect eccentric mass, the mass of the excitation frequency and eccentric together to produce the exciting force, therefore, be considered separately here Isolation Raymond impact on the dynamics of vertical machine center of mass at the lower edge of the stiffness and the excitation frequency. From the crushing force theory, have an impact on material crushing There are two important parameters, both amplitude and force force force-frequency, vibrating crusher theory that high frequency low amplitude force can achieve better crushing effect. Therefore, the establishment of a vertical body dynamics model of Raymond, at the bottom of a vertical cylindrical chamber Raymond add more balls and more short cylindrical dielectric medium, motion characteristics of the medium and medium to generate a force amplitude and force force Frequency and these forces during operation Raymond affect the body of vertical dynamic behavior. Crushing force of a final decision in the media material. According to the simulation results of the media analysis of the material force force force frequency and amplitude, the establishment media force parameters and vertical contact Raymond body control parameters, medium parameters and broken ground force between material properties, is formed by legislation Raymond mill type control parameters to obtain the parameters of different media and then crushing force set specific material broken grinding process according to the material properties.

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