分析TBM掘进机在强振动环境下工作时先导顺序阀的2种失效形式：压差脉动和油液泄漏，并建立仿真模型，分析得出振幅与频率以及阀芯各参数对阀芯2种失效形态的影响较大。将先导顺序阀独立参数作为设计变量，以最小脉动与泄漏及最大固有频率作为目标函数，对先导顺序阀进行优化设计。结果表明：优化后的先导顺序阀较优化前的压差脉动与泄漏量分别下降了34.2%和31.7%，减小了阀的失效率；并得出在满足流量与压强要求下，应选择较大弹簧刚度。%The two failure modes of the pilot-operated sequence valves for TBM tunneling machines un⁃der strong vibration were analyzed: differential pressure fluctuations and oil leaks, and a simulation model was built. The result shows that the amplitude and frequency as well as parameters of the valve have great effect on the failure. With the parameters of the pilot-operated sequence valves as design variable, and with the minimum pulsation and leakage and the largest natural frequencies as objective function, the optimal design of the pilot-operated sequence valves was conducted. The result shows the leakage and differential pressure fluctuation of the pilot-operated sequence valves are decreased by 34.2% and 31.7% respectively, the failure rate of the valve is reduced. The larger spring stiffness should be selected under meeting the requirements of pressure and rate of flow.
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