No abstract

Efficiency improvement of mining equipment, significant qualitative growth of production is impossible without equipment with high operational reliability. Technical level enhancement of mining engineering products is one of the most important tasks associated with the development of reliability and durability of mining equipment. Ensuring trouble-free operation of the mine enterprise substantially depends on reliability of transport equipment. An integrated approach of diagnostics of technical condition of gearboxes of belt conveyors will allow increasing reliability of assessment of the arising defects. In article the example of practical application of the integrated approach of diagnostics of reducers based on vibration, television methods and a method of the analysis of impurity in the greasing liquid is given.

Abstract-The article describes the design and operational factors leading to failures in mounting groups of the modern auger equipment. At the same time, the operating experience was considered of using antifriction bearings with solid lubricant antifriction filler (AFZ) having self-lubricating and self-sealing properties in various mounting groups. The changes in bearing clearances with AFZ as potential sources of high-frequency oscillations were assessed, also potential sources of low-frequency high-amplitude oscillations were identified in the design. As a result, the impact of mounting groups of the auger equipment on the change of the availability condition in the process of performance was assessed using vibration-based diagnostics method. The design of the mounting group with AFZ without end covers was proposed. Application of such a mounting group increases the service life of bearing support in the areas inaccessible for maintenance and repairs resulting in reduced labor intensity, energy and financial costs.

Based on the results of Highwall Miner diagnostic testing, reference spectral masks for every component and assembly were built. They standardize vibration intensity level in different frequency domains of spectra and previously were used for estimating their technical conditions. Two-year period of monitoring proved the effectiveness of the approach for shifting to the system of preventative maintenance.

Abstract. The article is devoted to the analysis of problems of maintenance of ecological safety of the mining enterprises. The aim of the work was the formulation of proposals, the implementation of which, in the opinion of the authors, is capable of raising the level of environmental safety of the mining industry and ultimately ensuring the environmentally oriented growth of the Russian economy.