本文選題：帶式輸送機(jī) + 打滑　； 參考：《太原理工大學(xué)》2015年碩士論文

【摘要】：打滑是帶式輸送機(jī)工作過程中不可回避的問題，打滑不僅加快輸送帶的磨損、誘發(fā)噪聲、影響生產(chǎn)率，嚴(yán)重時(shí)還將導(dǎo)致失火引發(fā)重大事故。由于打滑對(duì)輸送機(jī)在運(yùn)行上的嚴(yán)重影響，對(duì)輸送機(jī)打滑特性的研究已成為迫不及待的問題。目前國內(nèi)外對(duì)這方面的研究是基于撓性體傳動(dòng)的歐拉式，即假設(shè)輸送帶是無彎曲剪力、沒有質(zhì)量及厚度、不可拉伸的純?nèi)嵝泽w，但由歐拉式計(jì)算出來的結(jié)果與現(xiàn)實(shí)之間差別很大，不能較好的描述輸送機(jī)與滾筒的動(dòng)力學(xué)關(guān)系及運(yùn)動(dòng)狀態(tài)。因此，建立帶式輸送機(jī)的打滑模型，準(zhǔn)確描述帶式輸送機(jī)與滾筒的力學(xué)關(guān)系及運(yùn)動(dòng)狀態(tài)，研究輸送機(jī)打滑特性具有重要的實(shí)用價(jià)值和理論意義。 本論文的主要工作如下： （1）在對(duì)輸送帶打滑原因分析的基礎(chǔ)上，針對(duì)現(xiàn)有歐拉式在輸送機(jī)系統(tǒng)應(yīng)用上的不足，綜合考慮輸送帶的彎曲剪力，建立了輸送帶打滑模型。 （2）對(duì)輸送機(jī)系統(tǒng)進(jìn)行簡(jiǎn)化后，結(jié)合某礦圖紙?jiān)赗ecurDyn軟件中建立了輸送機(jī)虛擬樣機(jī)。通過對(duì)虛擬樣機(jī)進(jìn)行仿真分析，發(fā)現(xiàn)仿真結(jié)果與帶式輸送機(jī)實(shí)際工作中的特性是相符合的；發(fā)現(xiàn)初始張緊力、圍包角、摩擦系數(shù)參數(shù)越大，輸送帶系統(tǒng)越不容易發(fā)生打滑，這與文獻(xiàn)上記錄的相吻合。因此表明本文在虛擬環(huán)境中建立的輸送機(jī)樣機(jī)模型是合理的，是正確的。 （3）通過分別在不同初始張緊力、圍包角、摩擦系數(shù)下對(duì)傳統(tǒng)打滑式及本文建立的打滑式計(jì)算，，計(jì)算結(jié)果表明：傳統(tǒng)打滑式與仿真結(jié)果存在很大偏差，而本文建立的打滑模型與仿真結(jié)果基本一致。因此本文建立的輸送機(jī)打滑模型是正確的，是更符合實(shí)際工況的。 （4）利用Matlab軟件對(duì)影響輸送機(jī)打滑特性的因素進(jìn)行數(shù)值分析，研究了輸送帶厚度、初始張緊力、驅(qū)動(dòng)滾筒半徑、輸送帶與驅(qū)動(dòng)滾筒的摩擦系數(shù)、圍包角對(duì)輸送機(jī)打滑的影響，并針對(duì)輸送機(jī)的打滑特性對(duì)各影響因素提出防滑安全措施。 （5）結(jié)合清徐李家樓煤礦主斜井帶式輸送機(jī)打滑實(shí)際案例進(jìn)一步驗(yàn)證本文建立打滑模型的準(zhǔn)確性，并結(jié)合該礦的計(jì)算說明書分析打滑原因，提出防打滑措施。
[Abstract]:Skidding is an unavoidable problem in the working process of belt conveyors. Slip not only speeds up the wear and tear of conveyor belt, induces noise, affects productivity, but also leads to serious accidents caused by misfire. Because of the serious influence of skidding on the running of conveyer, the study of skid characteristics of conveyer has become an urgent problem. At present, the research on this aspect is based on the Euler type of flexible body transmission, which assumes that the conveyor belt is a pure flexible body with no bending shear force, no mass and thickness, and no stretch. However, the result calculated by Euler's formula is quite different from the reality, and it can not describe the dynamic relation and motion state of conveyor and drum. Therefore, it is of great practical value and theoretical significance to establish the sliding model of belt conveyor, to accurately describe the mechanical relationship between belt conveyor and roller and to study the sliding characteristics of belt conveyor. The main work of this thesis is as follows: 1) based on the analysis of the reasons of belt slip, aiming at the deficiency of the existing Euler type in the application of conveyor system, a belt slip model is established by considering the bending shear force of the conveyor belt synthetically. After simplifying the conveyer system, the virtual prototype of the conveyor is established in RecurDyn software combined with the drawing of a mine. Through the simulation analysis of the virtual prototype, it is found that the simulation results are consistent with the characteristics of the belt conveyor in actual work, and that the higher the parameters of initial tension, girth angle and friction coefficient, the less likely the belt system will slip. This coincides with what is recorded in the literature. It shows that the prototype model of conveyer established in this paper is reasonable and correct. 3) the traditional slip formula and the slip formula established in this paper are calculated under different initial tension, girth angle, friction coefficient, respectively. The results show that there is a great deviation between the traditional slip mode and the simulation results. The model is consistent with the simulation results. Therefore, the slip model of conveyer established in this paper is correct and more in line with the actual working conditions. Matlab software is used to analyze the factors affecting the slip characteristics of conveyor, and the influence of belt thickness, initial tension force, radius of driving drum, friction coefficient between conveyor belt and driving drum, circumference angle on the slip of conveyor is studied. According to the slip characteristics of conveyer, the paper puts forward the anti-slip safety measures. Combined with the actual case of belt conveyor of main inclined shaft in Qingxu Lijialou Coal Mine, the accuracy of the skid model is further verified, and the reason of skid is analyzed in combination with the calculation instruction of the mine, and the anti-skid measures are put forward.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD528.1

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本文編號(hào)：1984457