With the development of vibrating screen, more and more industries and fields are using vibrating screen as their distributor. So the main task of mining machinery companies is to develop large-scale and high-speed vibrating screens. And the fact is many research have been done by professors of industries and universities to improve the capacity of vibrating screen.
Strength and stiffness problems of vibrating screen are the key factors of restricting its development towards high-speed and large-scale. Based on the point of view that restricting the elastic vibration of vibrating screen, a method of adding redundant constraints to the vibration screen beam was put forward in this paper to decrease the stress concentration and uniform the energy distribution, thus improving the strength and stiffness without changing the mass of vibration screen was ensured.
This is a new idea of designing high-speed and large-scale vibration screen. Firstly, the properties of the redundant constraints beam were analyzed, and the structure of redundant constraints beam was designed based on the basic principles of mechanics of materials, of which the mass and rotational inertia were designed corresponding to the ordinary tube beam. Then the design calculation of dynamic model of the vibrating screen was done. Dynamics property of the vibrating screen with redundant constraints beam and vibrating screen with general tube beam are analyzed. The results show that dynamic stress and deformation of vibrating screen with redundant constraint beam decreased significantly, and the overall stiffness and strength are improved obviously.
The screening effect of the vibrating screen has a great impact not only on the value of the product, but also on the efficiency of the next operating procedure. Therefore, the study on the factors that affect the performance of vibrating screen is very important to find ways to improve the work efficiency of the vibrating screen. The factors that affect the working efficiency of the vibrating screen is related to many factors, including the material properties, the structural parameters, vibrating screen motion parameters, etc.
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