NON-DESTRUCTIVE CONTROL OF CRUSHING AND SCREENING EQUIPMENT AT KUZBASS COAL PREPARATION PLANTS
Journal Title: Вестник научного центра по безопасности работ в угольной промышленности - Year 2019, Vol 0, Issue 2
Abstract
This article presents some mechanical vibration parameters research results of crush-ing and screening, mining and transporting and coal preparation equipment, which allowed us to create the groundwork for creating uniform diagnostic criteria suitable for performing assessment and forecast-ing of the mining equipment technical condition changing process. The aim of the work is the directions development for the improvement of existing methodologies of vibration rationing and determination of the effectiveness of the proposed recommendations on the choice of methods and tools for the implementation of an integrated approach to the diagnosis of complex mechanical systems. Using the example of one of the most common structural elements of energy-mechanical equip-ment of mining machines, it is clear to show the methodology for creating uniform diagnostic criteria for assessing the actual condition of mining equipment. As part of the work on this topic, an integrated approach to diagnostics was used, which includes spectral analysis in the extended frequency range, excess, envelope analysis, wavelet transform, accel-eration расширен overrun characteristics analysis, signal time realization analysis. It is proved that just such a combination of vibration diagnostic methods allows an effective analysis of vibration parameters even in those cases when the analysis results do not allow to find a clear associative link between signal parame-ters and the presence of damage, making analysis difficult and not allowing the energy-mechanical equipment defects detecting on time; including those which are just forming. The obtained scientific re-sults prove the effectiveness of the proposed approach to the rationing methodology improvement of the vibration parameters generated during the crushing, screening and coal preparation equipment operation. The practical implementation of analysis and forecasting results using the uniformed diagnostic criteria will serve as a basic element when introducing a service system for Kuzbass enterprises equip-ment according to its actual condition.
Authors and Affiliations
P. B. Gericke
Keywords
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