Authors: P.B. Gericke

Title of the article: High-frequency coarse screens as a diagnostic object by the parameters of mechanical vibrations

Year: 2017, Issue: 1, Pages: 59-66

Branch of knowledge: Transport, mine and construction engineering

Index UDK: 53.083 (430.1)

DOI: -

Abstract: The article presents the results of investigations of parameters of vibroacoustic waves generated during operation of screens operated under the conditions of the coal industry in Kuzbass. We present a classification of faults and damages to the power and mechanical equipment of high-frequency screens. The efficiency of an integrated diagnostic approach to the analysis of the parameters of mechanical vibrations has been proved, and the basic approaches to the development of criteria for the limit state of crushing and screening equipment has been formulated. The necessity of wide use of modern methods of vibration diagnostics and non-destructive testing for the early detection of various types of defects in dynamic equipment and prediction of changes in their technical condition is justified. As part of this paper, we analyze the existing methodological approaches to the development of uniform diagnostic criteria based on the principles of vibration diagnostics of complex mechanical systems. Results of work allowed the authors to create a complex of more than one hundred of diagnostic rules, designed for automated detection of major defects of the diagnosed equipment based on the analysis of selective groups of informative frequencies. The proposed diagnostic approaches can be recommended for use as a basic platform for the improvement of the existing technical maintenance system of the operated mining equipment. The results of the research prove categorically the fundamental possibility of implementation in the existing conditions of the coal industry in Russia of equipment maintenance system based on its actual technical condition. It was proved in principle that it is possible to create a group of uniform diagnostic criteria that are suitable for evaluation of the technical condition of the equipment of high-frequency coarse screens and that are the prerequisite for effective short-term forecasting of the tested parameters in the development of adaptive mathematical models. The results of short-term adaptive modeling of technical condition can be most effectively implemented precisely in the concept of the proposed system of the process equipment maintenance.

Key words: vibration analysis high-frequency coarse screens crushing and screening equipment maintenance management ultimate state

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