本文選題：巷道掘進(jìn)支錨作業(yè)平臺 + 靜力學(xué)分析��； 參考：《安徽理工大學(xué)》2017年碩士論文

【摘要】：隨著煤礦采掘速度的提高,煤巷快速、安全的支護(hù)成為進(jìn)一步推動煤炭采掘機械化的重要環(huán)節(jié)。由于傳統(tǒng)的U形棚支護(hù)成本高、工人作業(yè)強度大、可靠性差,已經(jīng)不能滿足煤炭生產(chǎn)機械化進(jìn)程和高效高產(chǎn)的實際需求,錨桿支護(hù)以其操作方便、勞動強度低、支護(hù)可靠性高、支護(hù)成本低等優(yōu)勢,已經(jīng)成為現(xiàn)階段煤巷支護(hù)的主流。目前,綜掘工作面錨桿鉆機一般與掘進(jìn)機配合作業(yè),一般是機載錨桿鉆機加載于掘進(jìn)機之上兩者相互配合協(xié)同作業(yè),但是機載錨桿鉆機的加載易遮擋掘進(jìn)機司機的視線,存在一定安全隱患;另外,機載錨桿鉆機的加載增加了掘進(jìn)機的重量,增大了掘進(jìn)機臥底可能性�；谝陨锨闆r,本文提出的巷道支錨作業(yè)平臺,可以有效解決上述問題。首先對巷道支錨作業(yè)平臺的作業(yè)原理進(jìn)行闡述,校核了若干承重部件的結(jié)構(gòu)強度,主要分析了作業(yè)平臺、主梁、作業(yè)平臺支撐搖臂等在承受負(fù)載情況下的強度。根據(jù)巷道支錨作業(yè)平臺總體參數(shù)及各零部件動作順序,設(shè)計改進(jìn)了作業(yè)平臺支腿、平臺主板、平臺鏈接機構(gòu)、液壓抽屜、液壓支腿,分析研究了機載錨桿鉆機的結(jié)構(gòu),了解鉆機各部分功能,并對錨桿鉆機、液壓馬達(dá)進(jìn)行選型設(shè)計。分析了錨桿鉆機的作業(yè)原理,建立了錨桿鉆機縱向運動模型以及縱向振動運動學(xué)方程,計算了鉆柱縱向振動固有頻率,利用ANSYS軟件對鉆柱的縱向振動特性進(jìn)行分析,為鉆柱穩(wěn)定性研究提供參考。研究了鉆柱扭轉(zhuǎn)振動形式,建立鉆柱扭轉(zhuǎn)振動的物理簡化模型,建立鉆柱扭轉(zhuǎn)振動的數(shù)學(xué)模型,并且計算鉆柱的臨界轉(zhuǎn)速和扭轉(zhuǎn)振動的固有頻率。利用有限元軟件分析了鉆柱的扭轉(zhuǎn)振動特性,分析了鉆柱橫截面積、鉆柱長度對其扭轉(zhuǎn)特性影響,為鉆柱的扭轉(zhuǎn)振動特性研究提供參考。
[Abstract]:With the increase of coal mining speed, coal roadway is fast, and safe support becomes an important link to further promote coal mining mechanization. Because of the high cost of the traditional U-shaped shed support, the heavy working intensity and the poor reliability of the workers, it has been unable to meet the actual demand of mechanization of coal production and high efficiency and high yield. The bolt support is easy to operate, low labor intensity and high reliability of the support. Low support cost and other advantages have become the mainstream of coal roadway support at this stage. At present, the fully mechanized excavating face anchor drill generally works with the roadheader, usually the airborne anchor rig loaded on the roadheader works in cooperation with each other, but the loading of the airborne anchor drill is easy to block the sight of the driver of the roadheader. In addition, the loading of airborne anchor drill increases the weight of roadheader and increases the possibility of underground roadheader. Based on the above situation, the roadway support and anchor platform proposed in this paper can effectively solve the above problems. Firstly, the working principle of roadway support and anchor working platform is expounded, and the structural strength of some load-bearing parts is checked, and the strength of the working platform, main beam and supporting rocker arm of the working platform under load is mainly analyzed. According to the general parameters of roadway support and anchor working platform and the action sequence of each part, the supporting leg, platform main board, platform link mechanism, hydraulic drawer, hydraulic support leg are designed and improved, and the structure of airborne anchor drill is analyzed and studied. To understand the various functions of drilling rig, and anchor drill, hydraulic motor type selection design. The working principle of anchor drill is analyzed, the longitudinal motion model and kinematics equation of longitudinal vibration are established, the natural frequency of longitudinal vibration of drill string is calculated, and the longitudinal vibration characteristic of drill string is analyzed by ANSYS software. It provides a reference for the study of drill string stability. The form of string torsional vibration is studied, the physical simplified model of drill string torsional vibration is established, the mathematical model of drill string torsional vibration is established, and the critical speed of drill string and the natural frequency of torsional vibration are calculated. The torsional vibration characteristics of drill string are analyzed by using finite element software. The effects of drill string cross-sectional area and drill string length on the torsional vibration characteristics of drill string are analyzed, which provides a reference for the study of torsional vibration characteristics of drill string.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TD353.6

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