振动能量液压转换器结构与特性研究

Characteristics and Structure of Vibration Energy Hydraulic Converter

针对TBM掘进过程中主机剧烈振动问题和施工环境特点,提出一种基于液压系统的振动能量吸收转换装置。介绍了该转换装置的系统结构组成与工作原理,采用AMESim软件建立该系统的仿真模型。基于仿真模型研究了工况参数和元件参数对振动能量液压转换装置性能的影响规律。分析表明,振动能量油液转换器能实现相应功能。同时,在该结构条件下,液压马达转速随着活塞频率先增加后减小;马达转速随活塞幅值增加而增加但小幅值影响不明显;马达转速上升时间随蓄能器容积增加而增加;单向阀弹簧刚度需进行合理设计,否则转换器不能正常工作。

A hydraulic system based on vibration energy converter is proposed in this study for the vibration of the main engine with the consideration of the construction environment features. The structure and the working principle of the vibration energy absorption converter are introduced, and the simulation software AMESim is used to establish the model of the converter. The influences of the structure parameters and the working conditions on the perform- ance of the vibration energy absorption converter are analyzed based upon the simulation results. The analysis indi- cates that the vibration energy converter presented in this study can achieve the expected function. Meanwhile, under the structure, the shaft speed of the hydraulic motor increases first, and then decreases with the frequency of the piston, and the shaft speed increases with the moving amplitude of the piston is not obvious, and the angular acceleration of the shaft decreases with the volume of the accumulator. Moreover, the vibration energy converter will be at fault as the spring rate of check valve is not suitable.