硬岩掘进机液压弯管振动功率流研究

针对硬岩掘进机(TBM)强振动环境下的液压弯管传递效率降低和损坏的问题,提出了以振动功率流的方法来研究管道的振动特性.首先,根据应力与功率的关系,建立了弯管振动功率流计算模型.然后,通过仿真分析探究了不同基础振动参数和弯管结构参数对弯管的应力影响规律,并给出了弯管的总功率和振动功率流的计算方法.最后,采用正交试验分析了弯管结构参数的影响主次顺序,优化了管道的结构参数并使管道振动功率流降低了30.52%,同时提出了基础振动下弯管的设计流程.结果表明,本文所提出的分析方法能为基础振动下弯管的设计和选型提供理论依据.

Research on Vibration Power Flow of TBM Hydraulic Bend Pipe

The vibration characteristics of the bend pipe were studied by means of vibration power flow, as the problems of transmission efficiency reduction and structure damage for the hydraulic bend pipe of Hard Rock Tunnel Boring Machine (TBM) occur under the environment of strong vibration. Firstly, the calculation model of the elbow vibration power flow was established by the relationship between stress and power. Then, the influence rules of different basic vibration parameters and the elbow structure parameters on the stress were investigated through simulation, and the calculation method of total power and vibration power flow was given. Finally, the structure parameters of pipeline were optimized to reduce the vibration power flow of pipeline by 30.52%, and the design process of bend pipeline was proposed. The results show that the analytical method can provide the theoretical basis for the design and selection of the bend pipe.