【摘要】：掘進(jìn)機(jī)是一種廣泛應(yīng)用于煤碳開采、隧道施工和礦山采掘等諸多領(lǐng)域的綜合機(jī)械化掘進(jìn)設(shè)備。隨著機(jī)械化生產(chǎn)的不斷發(fā)展,關(guān)于工業(yè)振動(dòng)與噪聲的國家標(biāo)準(zhǔn)不斷的提高,掘進(jìn)機(jī)劇烈的振動(dòng)和噪聲問題漸漸成為制約其品質(zhì)提升的關(guān)鍵性問題。針對(duì)此問題,本文依托晉城市科技計(jì)劃項(xiàng)目:“煤礦井下掘進(jìn)機(jī)粘彈性阻尼緩沖裝置研發(fā)”。以某型掘進(jìn)機(jī)作為研究對(duì)象,對(duì)電控箱減振器的設(shè)計(jì)問題進(jìn)行了研究。以掘進(jìn)機(jī)電控箱阻尼懸置系統(tǒng)為研究對(duì)象,以減少掘進(jìn)機(jī)機(jī)架振動(dòng)向電控箱傳遞為研究的根本目的。經(jīng)過前期的調(diào)查走訪,對(duì)現(xiàn)有的電控箱隔振器進(jìn)行實(shí)地調(diào)研,根據(jù)機(jī)械振動(dòng)學(xué)理論和橡膠材料的相關(guān)理論,建立了關(guān)于管型橡膠減振器的6自由度振動(dòng)模型;利用能量解耦的方法對(duì)原有的掘進(jìn)機(jī)電控箱阻尼懸置系統(tǒng)進(jìn)行了振動(dòng)耦合分析,計(jì)算結(jié)果顯示其解耦程度有限,系統(tǒng)的相關(guān)參數(shù)需要進(jìn)行優(yōu)化。在確定了阻尼系統(tǒng)固有頻率的分布區(qū)間之后,也就對(duì)阻尼元件剛度參數(shù)的變化范圍提出了約束條件。以系統(tǒng)各階固有頻率主要振動(dòng)方向的解耦程度最大為目標(biāo),利用MATLAB優(yōu)化軟件對(duì)阻尼懸置系統(tǒng)的三向剛度參數(shù)進(jìn)行了參數(shù)優(yōu)化,經(jīng)過優(yōu)化后系統(tǒng)的固有頻率布局更為合理,各階主振動(dòng)方向解耦程度也得到了提高。為了驗(yàn)證優(yōu)化結(jié)果的可行性,對(duì)安裝有原減振器和新型管狀橡膠減振器的掘進(jìn)機(jī)進(jìn)行了實(shí)車試驗(yàn)對(duì)比,改進(jìn)后的隔振器減少了掘進(jìn)機(jī)機(jī)架振動(dòng)機(jī)械能向電控箱的傳遞,對(duì)電控箱內(nèi)的電氣元件能夠發(fā)揮出更佳的保護(hù)效果。本文可為掘進(jìn)機(jī)電控箱的減振試驗(yàn)研究提供參考。
[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.
【學(xué)位授予單位】：太原科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD632.2

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