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

【摘要】：打滑是帶式輸送機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、影響生產率，嚴重時還將導致失火引發(fā)重大事故。由于打滑對輸送機在運行上的嚴重影響，對輸送機打滑特性的研究已成為迫不及待的問題。目前國內外對這方面的研究是基于撓性體傳動的歐拉式，即假設輸送帶是無彎曲剪力、沒有質量及厚度、不可拉伸的純柔性體，但由歐拉式計算出來的結果與現(xiàn)實之間差別很大，不能較好的描述輸送機與滾筒的動力學關系及運動狀態(tài)。因此，建立帶式輸送機的打滑模型，準確描述帶式輸送機與滾筒的力學關系及運動狀態(tài)，研究輸送機打滑特性具有重要的實用價值和理論意義。 本論文的主要工作如下： （1）在對輸送帶打滑原因分析的基礎上，針對現(xiàn)有歐拉式在輸送機系統(tǒng)應用上的不足，綜合考慮輸送帶的彎曲剪力，建立了輸送帶打滑模型。 （2）對輸送機系統(tǒng)進行簡化后，結合某礦圖紙在RecurDyn軟件中建立了輸送機虛擬樣機。通過對虛擬樣機進行仿真分析，發(fā)現(xiàn)仿真結果與帶式輸送機實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)境中建立的輸送機樣機模型是合理的，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)下對傳統(tǒng)打滑式及本文建立的打滑式計算，，計算結果表明：傳統(tǒng)打滑式與仿真結果存在很大偏差，而本文建立的打滑模型與仿真結果基本一致。因此本文建立的輸送機打滑模型是正確的，是更符合實際工況的。 （4）利用Matlab軟件對影響輸送機打滑特性的因素進行數(shù)值分析，研究了輸送帶厚度、初始張緊力、驅動滾筒半徑、輸送帶與驅動滾筒的摩擦系數(shù)、圍包角對輸送機打滑的影響，并針對輸送機的打滑特性對各影響因素提出防滑安全措施。 （5）結合清徐李家樓煤礦主斜井帶式輸送機打滑實際案例進一步驗證本文建立打滑模型的準確性，并結合該礦的計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.
【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD528.1

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本文編號：1984457