Modelling and Simulation of Scraper Reliability for Maintenance
Modelling and Simulation of Scraper Reliability for Maintenance
复制标题
铲运机维护可靠性建模与仿真
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
中科院分区：
文献类型：
--
作者：
刮板输送机是一种连续运输货物的重型机械，广泛应用于矿山、港口、仓储等企业，刮板输送机的故障率直接影响到企业的生产成本和生产能力，因此对刮板输送机的可靠性进行评估和预测是这些企业的重要工作。根据构件的结构特点和失效因素的不同，对构件的可靠性进行了分类和讨论，并根据构件的时间-建立了刮板链的可靠性模型，跟踪了零件群体的寿命分布和刮板链的可靠性变化;基于应力-强度干涉模型，考虑了疲劳失效引起的强度下降，建立了齿轮、轴等零件的动态可靠性模型，观察了零件可靠性随刮板寿命的变化;最后，建立了铲运机维修的系统可靠性模型，对铲运机的可靠性进行了仿真计算。
A scraper conveyor is a kind of heavy machinery which can continuously transport goods and widely used in mines,ports and store enterprises.Since scraper failure rate directly affects production costs and production capacity,the evaluation and the prediction of scraper conveyor reliability are important for these enterprises.In this paper,the reliabilities of different parts are classified and discussed according to their structural characteristics and different failure factors.Based on the component's time-to-failure density function,the reliability model of scraper chain is constructed to track the age distribution of part population and the reliability change of the scraper chain.Based on the stress-strength interference model,considering the decrease of strength due to fatigue failure,the dynamic reliability model of such component as gear,axis is developed to observe the change of the part reliability with the service time of scraper.Finally,system reliability model of the scraper is established for the maintenance to simulate and calculate the scraper reliability.