
筑路机械与施工机械化
2017年
文章编号:1000-033X(2017)12-0116-05
第34卷
基于故障树的盾构机液压缸推进
无力故障的可靠性分析
邵成猛
(中国铁建十六局集团有限公司.北京101100)
要:针对盾构机液压缸推进无力故障,采用故障树分析方法对液压推进系统进行可靠性分析。摘
故障树定性分析发现.液压缸推进无力故障树的一阶最小制集共有11个,二阶最小制集1个,应重点关注液压缸、油泵和液力锁等;故障树定量分析发现,盾构机液压缸推进无力故障的发生率随时间呈线性上升趋势,在第1000h故障的发生率为0.03,此时应重点加强对液压推进系统的维护。故障树重要度分析结果表明,液压缸密封圈泄露、油系内泄漏、液力镇的单向阔磨损是造成液压缸
推进无力的主要原因,在诊断时应该首先考虑排查。关键词:隧道工程;盾构机;故障树;推进无力
中图分类号:U455.3
文献标志码:B
Reliability Analysis of Hydraulic Cylinder Propulsion Failure of
Shield Machine Based on Fault Tree
SHAOCheng-meng
(China Railway 16th Bureau Group Co. , Ltd. , Beijing 101100. China)
Abstract: Aiming at the hydraulic cylinder propulsion failure of the shield machine, the fault tree analysis method was used to analyze the reliability of the hydraulic propulsion system. The qualitative analysis shows that the fault tree comprises eleven first-order minimal cut sets and one second-order minimal cut set, and the focus should be on the hydraulie cylinder, oil pump and hydraulic lock, The quantitative analysis shows that the occurrence rate of the hydraulic cylinder propulsion failure is linearly increasing with time, and it reaches 0. 03 after 1 00o hours, when the hydraulic propulsion system should be carefully maintained. The importance analysis shows that the hydraulic cylinder seal leakage, oil pump leakage, check valve wear of the hydraulic lock are the main reasons for the propulsion failure and should be checked at the beginning of the diagnosis.
Key words; tunnel engineering; shield machine; fault tree; propulsion failure
引言 0
盾构机是一种用于隧道揭进的专用工程机械,目前在地铁建设、市政和水电隧道等领域被广泛应用。在使用过程中盾构机不仅要承受恶劣环境的影响(如地底湿度、粉尘等),还将承受土层压力的作
收稿日期:2017-06-17
基金项目:中铁十六局软道公司科技创新项目(K2014-13C)
用,使得盾构机液压推进系统故障频发1-:。由于盾构机在工作过程中需要根据工况完成姿态调整、项进和换向等任务,如果液压推进系统发生故障将严重影响施工进度,造成巨大损失,
故障树分析方法作为一种重要的可靠性分析方法,目前已经成为复杂系统可靠性分析的重要技
作者简介:部成猛(1979-),男,江苏盐城人高级工程师,研究方向为城市轨道交通土建工程施工技术,
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