The Analysis And Study Of Fault Tree Of The Hydraulic System Of The Explosion-proof Hydraulic Elevating Conveyor

The thesis uses the theory of reliability engineering, the theory of computer emulation, the theory of engineering fuzzy, the theory of probability as well as the theory of oil pollution control. Considered fully the design feature of the explosion-proof hydraulic elevating conveyor, carries on the fault tree analysis and the research to its hydraulic system.Through carrying on the investigation and the consulting related data to the actual service elevating conveyor, constructing fault tree above hydraulic system as well as carrying on the reliable emulation to judge major failure elements of system. According to the analysis result of fuzzy fault tree of major failure elements, to discuss prime reasons about failure of these elements and propose the precautionary measures as well as the improvement measure. This job may provide basis for enhancing functional reliability above elevating conveyor.Finally, this thesis has proposed fuzzy fault diagnosis method based on the fault tree of hydraulic system of elevating conveyor and has given its computation model. This job provides the theoretical basis for the fault diagnosis above hydraulic system of elevating conveyor.