掘进机电控箱悬置阻尼系统参数优化及试验研究

发布时间：2019-06-10 05:29

【摘要】：掘进机是一种广泛应用于煤碳开采、隧道施工和矿山采掘等诸多领域的综合机械化掘进设备。随着机械化生产的不断发展,关于工业振动与噪声的国家标准不断的提高,掘进机剧烈的振动和噪声问题渐渐成为制约其品质提升的关键性问题。针对此问题,本文依托晋城市科技计划项目:“煤矿井下掘进机粘弹性阻尼缓冲装置研发”。以某型掘进机作为研究对象,对电控箱减振器的设计问题进行了研究。以掘进机电控箱阻尼悬置系统为研究对象,以减少掘进机机架振动向电控箱传递为研究的根本目的。经过前期的调查走访,对现有的电控箱隔振器进行实地调研,根据机械振动学理论和橡胶材料的相关理论,建立了关于管型橡胶减振器的6自由度振动模型;利用能量解耦的方法对原有的掘进机电控箱阻尼悬置系统进行了振动耦合分析,计算结果显示其解耦程度有限,系统的相关参数需要进行优化。在确定了阻尼系统固有频率的分布区间之后,也就对阻尼元件刚度参数的变化范围提出了约束条件。以系统各阶固有频率主要振动方向的解耦程度最大为目标,利用MATLAB优化软件对阻尼悬置系统的三向刚度参数进行了参数优化,经过优化后系统的固有频率布局更为合理,各阶主振动方向解耦程度也得到了提高。为了验证优化结果的可行性,对安装有原减振器和新型管状橡胶减振器的掘进机进行了实车试验对比,改进后的隔振器减少了掘进机机架振动机械能向电控箱的传递,对电控箱内的电气元件能够发挥出更佳的保护效果。本文可为掘进机电控箱的减振试验研究提供参考。
[Abstract]:Roadheader is a kind of comprehensive mechanized excavation equipment which is widely used in coal and carbon mining, tunnel construction and mining and many other fields. With the continuous development of mechanized production and the continuous improvement of the national standard of industrial vibration and noise, the severe vibration and noise of roadheader has gradually become the key problem restricting its quality improvement. In order to solve this problem, this paper relies on the project of Jincheng Science and Technology Plan: "Research and Development of Viscoelastic damping buffer device for Coal Mine Roadheader". Taking a roadheader as the research object, the design of electric control box shock absorber is studied. The damping suspension system of roadheader electromechanical control box is taken as the research object, and the fundamental purpose of the research is to reduce the transmission of vibration of roadheader frame to electric control box. After the previous investigation and visit, the existing electric control box isolator is investigated on the spot. According to the mechanical vibration theory and the related theory of rubber material, the 6-degree-of-freedom vibration model of the tubular rubber shock absorber is established. The vibration coupling analysis of the original damping suspension system of tunneling electromechanical control box is carried out by using the method of energy decoupling. The calculation results show that the degree of decoupling is limited and the related parameters of the system need to be optimized. After determining the distribution range of the natural frequency of the damping system, the constraint conditions are put forward for the variation range of the stiffness parameters of the damping element. Aiming at the maximum decoupling degree of the main vibration direction of the natural frequency of the system, the three-way stiffness parameters of the damping suspension system are optimized by using MATLAB optimization software, and the natural frequency layout of the system is more reasonable after optimization. The decoupling degree of the main vibration direction of each order is also improved. In order to verify the feasibility of the optimization results, the real vehicle test comparison of the roadheader equipped with the original shock absorber and the new tubular rubber shock absorber is carried out, and the improved vibration isolator reduces the transmission of the vibration mechanical energy of the roadheader frame to the electric control box. The electrical components in the electric control box can play a better protection effect. This paper can provide a reference for the experimental study of vibration reduction of excavated electromechanical control box.
【学位授予单位】：太原科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD632.2

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