The possibility of monitoring of underground self-propelled equipment is shown. The use of on-board measuring instruments in combination with software systems for planning, accounting of work, organization of maintenance and repair, as well as a systematized approach to accounting for the influence of operating conditions on the efficiency of the underground self-propelled machine operation has been suggested.
The principles of determining the service life of elements of loading and delivery machines (PDM), more fully taking into account their operating conditions, have been proposed. Emphasis is put not on formation of an array of statistical data on reliability, but on analysis of loading of elements under specific operating conditions. As experience of PM operation shows, in recommendations of manufacturers on maintenance and repair (M&R) of machines, operating conditions are taken into account insufficiently. One of the indicators, evaluating efficiency of use of mining equipment is its resource. Resource characteristics of elements of machinery determine parameters of O&R system. On a choice of technique of definition of these characteristics directly depends reliability of machinery. Application of the proposed principles will allow to adjust parameters of maintenance and repair system on the basis of processing of a small number of statistical data.
At present, self-propelled equipment of foreign firms, which is characterized by high efficiency of use and high cost, is widespread at Russian mines. The low availability factor (0.7) and technical utilization factor (0.6), which characterizes the level of organization of the repair service, indicate insufficiently effective use of self-propelled equipment. In addition, there is a pronounced lag of repair systems, the basis of which were static repair standards established by deterministic methods, from the developing means of mechanization. This situation can be corrected by the adaptive system of maintenance and repair (M&R). Its basis is a subsystem of collecting and processing of the primary information about operation and repair of machines, the main source of information about the reliability of self-propelled equipment are observations during operation. The quality of the estimation of machine reliability depends on the quality of the collected information, which is subject to the requirements of reliability, completeness and homogeneity. Objective evaluation of machines reliability must be done only when the data about their work under specific conditions are received systematically. The form of recording the information about repair and operation of self-propelled machines and the scheme of forming the array of data about reliability and operating conditions are proposed.
