Fully Mechanized Coal Face Support Hydraulic System Reliability Modeling And Analysis

Hydraulic support is the modernized high production and high efficient mine to ensure the working space and the importance of safety in production equipment, its safety and reliability will directly affect the comprehensive mechanized coal mining technology application and promotion. Based on years of fault statistics of hydraulic support fault are mostly from the hydraulic system, and support hydraulic system maintenance, repair costs throughout the mining cost to hold the very great proportion. Therefore, to support hydraulic system reliability analysis, find out the weak link of hydraulic system, hydraulic system reliability assurance measures for hydraulic system, update technology and equipment repair provides reliable basis.Study on hydraulic support technology development status are introduced in this paper, the hydraulic system of hydraulic support features analysis. To support hydraulic system components of the structure and the principle of a detailed analysis, according to the hydraulic system structure diagram and reliability theory, draw out the reliability of hydraulic system of model. Combination of support hydraulic system fault analysis and reliability model of hydraulic system fault tree. Support hydraulic system fault tree construction for subsequent repair personnel daily maintenance and repair equipment to provide help.The hydraulic system is the key part of emulsion pump has made the detailed reliability analysis, both qualitative analysis of the causes of failures, and the application of CAFTA analysis system of fault tree fault tree analysis, quantitative description of a hydraulic system weakness.The reliability anal ysis results accord with the actual situation, emulsion pump failure is mostly made of emulsion caused by pollution, and partly by abrasion, corrosion, at the end of the thesis for the hydraulic system of weak links made support hydraulic system reliability assurance measures, in order to improve the hydraulic system reliability and safety, but also to the product design update in technology and equipment repair in the repair equipment to give a certain reference.