To reduce safety hazards in lifting machinery and avoid accidents,a safety evaluation system for lifting machinery based on fuzzy analytic hierarchy process is proposed.Firstly,establish a safety index system for lifting machinery,and determine the weight of different types of lifting machinery indicators through expert consultation and analytic hierarchy process;Secondly,for the subjective and objective evaluation of safety indicators by testing personnel and experts,the fuzzy relationship matrix is determined u-sing the ridge distribution membership function;Then,from bottom to top,perform fuzzy synthesis operations on the fuzzy relationship matrix of safety indicators and corresponding weights layer by layer;Finally,determine the safety level of the lifting machinery and ex-port a detailed evaluation report from the system.The results show that the safety index system for lifting machinery is established comprehensively,and the uncertainty factors are accurately and reliably determined using ridge distribution membership degree to de-termine the relationship matrix.The system safety evaluation is scientific and reasonable.
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