掘进机臂架的高频激振特性研究

发布时间：2018-09-06 08:02

【摘要】：振动式掘进机臂架的响应频率和振幅是影响掘削效率的关键因素,由于目前机械惯性式激振系统结构复杂、响应频率及振幅较低的问题,提出一种采用转阀的臂架高频激振系统方案,并对掘进机臂架系统的激振特性进行研究。通过在ADAMS与AMESim仿真软件中分别建立臂架激振系统动力学模型和电液激振模型,仿真分析得出系统压力、激振阀阀口开度、激振频率、负载质量与臂架激振响应特性的关系;并搭建臂架激振系统试验平台,对仿真结果进行验证。研究结果表明,提高系统压力、增大激振阀阀口开度、减小负载质量可提高臂架响应振幅。随着激振频率的增大,臂架响应振幅先迅速下降,高于50Hz后,基本不再变化。为掘进机臂架系统的高频激振特性调节及控制提供依据。
[Abstract]:The response frequency and amplitude of the boom of vibratory tunneling machine are the key factors affecting the cutting efficiency. Because of the complex structure of mechanical inertial vibration excitation system, the response frequency and amplitude are low. This paper presents a scheme of high-frequency vibration excitation system for boom with rotary valve, and studies the exciting characteristics of bobbin system of roadheader. By establishing the dynamic model of boom excitation system and electro-hydraulic vibration model in ADAMS and AMESim simulation software, the relationship between system pressure, valve opening, exciting frequency, load quality and the response characteristics of boom is obtained by simulation analysis. The test platform of boom excitation system is built, and the simulation results are verified. The results show that the response amplitude of the boom can be increased by increasing the pressure of the system increasing the opening of the valve opening and reducing the load quality. With the increase of the exciting frequency, the amplitude of the brace response decreases rapidly first, and when the amplitude is higher than the 50Hz, it basically does not change. It provides the basis for the regulation and control of the high frequency excitation characteristics of the bobbin system of the tunneling machine.
【作者单位】：中南大学机电工程学院;
【基金】：高性能复杂制造国家重点实验室资助项目(zzyjkt2015-03)
【分类号】：TU621

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