| 盾构机液压推进系统故障分析与仿真研究 |
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| 引用本文： | 徐恒吉.盾构机液压推进系统故障分析与仿真研究[J].液压与气动,2022,0(11):166-174. |
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| 作者姓名： | 徐恒吉 |
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| 作者单位： | 中铁十四局集团大盾构工程有限公司, 江苏 南京 211800 |
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| 摘 要： | 针对盾构机液压推进系统的故障诊断问题,以在芜湖长江隧道项目过程中所使用的大型液压驱动型泥水盾构机为研究对象,分析了盾构机液压推进系统的工作原理,总结了推进系统中液压缸泄漏、换向阀泄漏及溢流阀泄漏故障模式的发生机理及其对推进系统造成的影响。利用AMESim平台建立推进系统模型,对液压缸泄漏、换向阀泄漏及溢流阀泄漏3类故障进行仿真分析,并提取液压缸推进速度、推进行程、无杆腔流量和系统压力4种推进参数的仿真数据。仿真结果表明:发生液压缸泄漏故障时,活塞杆无法伸出,推进速度为0;发生换向阀泄漏故障时,液压缸出现自走现象,推进速度明显降低;发生溢流阀泄漏故障时,系统压力明显降低,液压缸无法克服阻力向前推进。为后续盾构机推进系统的故障诊断和预测提供了有价值的参考。
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| 关 键 词： | 盾构机 液压推进系统 故障分析 AMESim建模 |
| 收稿时间： | 2022-03-30 |
Malfunction Analysis and Simulation Research of Shield Machine Hydraulic Propulsion System |
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| XU Heng-ji.Malfunction Analysis and Simulation Research of Shield Machine Hydraulic Propulsion System[J].Chinese Hydraulics & Pneumatics,2022,0(11):166-174. |
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| Authors: | XU Heng-ji |
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| Affiliation: | China Railway 14th Bureau Group Large Shield Engineering Co., Ltd., Nanjing, Jiangsu 211800 |
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| Abstract: | Focus on the malfunction diagnosis of the hydraulic propulsion system of the shield machine, taking the large hydraulically driven muddy water shield machine used in the Wuhu Yangtze River tunnel project as the research object. The working principle of the hydraulic propulsion system of the shield machine is firstly analyzed. The mechanism of the malfunction modes of hydraulic cylinder leakage, reversing valve leakage and overflow valve leakage in the propulsion system and their effects on the propulsion system are summarized. Using the AMESim platform to build a propulsion system model, which is used to simulate and analyze three types of faults: hydraulic cylinder leakage, reversing valve leakage and overflow valve leakage. Then extracting simulation data of four propulsion parameters of hydraulic cylinder, propulsion speed, propulsion stroke, rodless cavity the flow and system pressure. The simulation results show that when the hydraulic cylinder leakage fault occurs, the piston rod cannot be extended and the propulsion speed is 0; when the reversing valve leakage fault occurs, the hydraulic cylinder appears self-propelled and the propulsion speed is significantly reduced; when the overflow valve leakage fault occurs, the system pressure is significantly reduced and the hydraulic cylinder cannot overcome the resistance to advance forward. The simulation results provide a valuable reference for the subsequent malfunction diagnosis and prediction of the shield machine propulsion system. |
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| Keywords: | shield machine hydraulic propulsion system malfunction analysis AMESim modeling |
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