Modelling and Simulation of Scraper Reliability for Maintenance

• 来源期刊: 国际设备工程与管理：英文版
• 学科: 工学
• 关键词: 可靠性建模 刮板输送机 可靠性模型 仿真 维护 存储企业 可靠性评价 连续运输
• 年，卷（期）: 2011,（3）
• 页码范围: 139-145
• 页数: 7页
• 分类号: TP311.5|TH166
• 语种: 英文

摘要

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.