Abstract
This article shows that a significant part of the cost of coal is the cost of transporting it from the long wall to the mine surface, which makes it important to search for reserves in order to increase the efficiency of using mine vehicles, in particular, belt conveyors. This article proposes a method for diagnosing the state of gears of mine belt conveyors based on the actual condition of the lubricating oil. The advantages of combining the study of oil parameters by spectroscopic and microscopic methods are shown. The results of testing lubricating oil of the mine gearboxes located on belt conveyors installed in a single transport and process chain. In order to determine the concentration of wear products the oil was examined with an optical emission spectrometer. For lubricating oil, in which excess wear was observed, a microscopic examination was carried out to clarify the types of wear. Micrographs of wear particles in lubricating oil are given. It characterizes one or another type of wear or their combination. This particular combination of methods increases the probability of identifying possible malfunctions of gearboxes at an early stage of defect development. Thus, the introduction of this technique will reduce the duration of unplanned emergency downtime of belt conveyors and improve the safety of mine transport.
Highlights
The economy of the most developed countries is moving to the use of innovative technologies and modern automated equipment in many areas of production
An MFS-11 spectrometer is used for analyzing industrial oils checking the products of wear in the parts of mine belt conveyors gearboxes
In order to determine the technical condition of the gearbox, it is necessary to know the dynamics of the process of changing the content of metal particles in the oil
Summary
The economy of the most developed countries is moving to the use of innovative technologies and modern automated equipment in many areas of production. Modern mining equipment mostly determine the prospects if the coal mining development. The improvement of its reliability and safety of operation should be taken into account. The condition of the equipment is considered to be in good condition if all its components and parts are operational, and the parameters meet the requirements of normative and technical documentation. The criteria, which determine the technical condition of components and equipment elements do not approach the limit values. Maintaining conveyor compliance with industrial safety requirements depends on the rational organization of maintenance and repair. The most promising strategy for the maintenance and repair of mining equipment today is the maintenance according to the actual condition, since the limiting states of structures are the result of a gradual accumulation of damage in parts, assemblies and components. The defects identification and elimination at the initial stage of development, providing the minimization of repair work, is possible only with the introduction of effective diagnostic methods, including in the framework of the expert survey [1, 2]
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