大断面掘进装备极端工况下的电液系统载荷顺应性研究

项目名称： 大断面掘进装备极端工况下的电液系统载荷顺应性研究

项目编号： No.51305328

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 机械、仪表工业

项目作者： 施虎

作者单位： 西安交通大学

项目金额： 25万元

中文摘要： 大断面掘进装备是国家基础设施建设、资源开发和国防建设急需的重大战略性装备。项目针对大断面掘进装备穿越地质复杂、电液系统易遭受随机突变大载荷等特点，在前期液压系统顺应性理论研究的基础上研究该类装备极端掘进工况下的电液系统突变载荷顺应性原理及设计方法。探索大断面掘进装备电液系统在突变外载荷作用下的液压冲击产生机理和传递规律，建立机液耦合动态分析模型，提出冲击载荷域描述方法；研究载荷突变工况下大功率电液系统液控自适应原理，研制超载液压力直接驱动的大断面掘进装备电液系统液控动力调节机构；建立电液系统突变载荷顺应性评价体系，揭示电液系统特征和状态参数对突变载荷顺应性的影响规律，在数值分析和实验验证基础上，提出基于顺应性的电液系统参数设计和优化方法。预期成果不仅有利于完善大断面掘进装备电液系统设计理论体系，而且为我国重大装备自主创新能力的提升提供理论和技术支撑，具有重要科学研究意义和工程应用价值。

中文关键词： 盾构；电液系统；突变载荷；顺应性；快速响应

英文摘要： Nowadays, there is a heavy demand for the large tunneling equipment in infrastructure construction, resource exploitation and national defense fields of China. Considering the complicated geological strata penetrated by the tunneling machine and the randomly changed loads exerted on the electrohydraulic systems, the principle and design method of load compliance of electrohydraulic system of large tunneling equipment under the extreme operating conditions was investigated based on the previous research on hydraulic compliance. Generation and transmission of hydraulic impact in the electrohydraulic systems of large equipment due to sudden external loads were presented. Consequently, the hydraulic-mechanical coupling dynamic model and the impact pressure domain were proposed. Hydraulic operated principle for electrohydraulic system of great power under changing load was analyzed, and the mechanism directly operated by hydraulic overload pressure was developed for the electrohydraulic systems of large tunneling equipment. The evaluation system of load compliance of the electrohydraulic systems was established, and the influences of the structural and working parameters on system compliance were revealed. Combining numerical analysis with experimental verification, the compliance based design and optimization method

英文关键词： shield tunneling machine；electrohydraulic system；sudden load；compliance；fast response