發(fā)布時(shí)間：2018-04-12 19:43

  本文選題：帶式輸送機(jī) + 改向滾筒��； 參考：《遼寧工程技術(shù)大學(xué)》2015年碩士論文

【摘要】：隨著現(xiàn)代工業(yè)水平的發(fā)展,采礦業(yè)機(jī)械化程度越來越高,帶式輸送機(jī)得到了普遍應(yīng)用。其中,滾筒是帶式輸送機(jī)的關(guān)鍵部件,它是一個(gè)復(fù)雜的組合體,其結(jié)構(gòu)要求具有很高的可靠性。在實(shí)際工作過程中,滾筒主要破壞形式是筒體在旋轉(zhuǎn)時(shí)承受交替拉伸壓縮變形致使焊縫破裂。因此,本文對(duì)某直徑為1900mm,筒體厚度為35mm的鋼繩芯帶式輸送機(jī)的改向滾筒進(jìn)行研究,利用ANSYS軟件對(duì)滾筒進(jìn)行了有限元分析和結(jié)構(gòu)優(yōu)化設(shè)計(jì),并提取了優(yōu)化結(jié)果中的對(duì)筒體變形量影響較大的加強(qiáng)環(huán)進(jìn)行結(jié)構(gòu)改進(jìn)。首先,對(duì)帶式輸送機(jī)改向滾筒進(jìn)行了結(jié)構(gòu)確定。包括了滾筒的全部構(gòu)件——筒體、滾筒軸、輪轂與輪輻進(jìn)行了結(jié)構(gòu)設(shè)計(jì),并對(duì)對(duì)稱組件的間距進(jìn)行了計(jì)算。其次,利用ANSYS軟件對(duì)滾筒進(jìn)行力學(xué)分析,找出滾筒焊縫破裂產(chǎn)生的原因,提出加強(qiáng)環(huán)的整改措施,并對(duì)比改進(jìn)前后滾筒的分析結(jié)果,確保其正確性。再次,對(duì)改進(jìn)后的滾筒進(jìn)行了優(yōu)化設(shè)計(jì)。借助ANSYS軟件中的優(yōu)化模塊,選擇三個(gè)優(yōu)化設(shè)計(jì)變量,即筒體的厚度、加強(qiáng)環(huán)的長(zhǎng)度和厚度,以滾筒的應(yīng)力為狀態(tài)變量,總重量為目標(biāo)函數(shù)進(jìn)行優(yōu)化。優(yōu)化后的滾筒既能滿足使用要求,又要節(jié)省了材料,降低成本。最后,選出優(yōu)化結(jié)果中的加強(qiáng)環(huán)的體積參數(shù),再次利用ANSYS軟件分析了不同形狀結(jié)構(gòu)的加強(qiáng)環(huán)對(duì)筒體變形量的影響程度,又結(jié)合了MATLAB的函數(shù)擬合模塊求解了最優(yōu)形狀加強(qiáng)環(huán)的結(jié)構(gòu)參數(shù),使得滾筒在輕重量的條件下滿足使用要求并且筒體變形量最小。綜上所述,本文對(duì)改向滾筒進(jìn)行了結(jié)構(gòu)計(jì)算,借助ANSYS軟件對(duì)滾筒進(jìn)行優(yōu)化設(shè)計(jì)并同時(shí)應(yīng)用ANSYS和MATLAB的優(yōu)化結(jié)合,對(duì)加強(qiáng)環(huán)進(jìn)行了結(jié)構(gòu)改進(jìn)。
[Abstract]:With the development of modern industry, the mechanization of mining industry is becoming more and more high, and belt conveyors are widely used.The drum is the key component of belt conveyor, it is a complex combination, and its structure requires high reliability.In the actual working process, the main failure form of the drum is that the cylinder is subjected to alternating tensile compression deformation while rotating, resulting in the fracture of the weld seam.Therefore, in this paper, the redirection drum of a steel rope core belt conveyor with diameter of 1900 mm and thickness of 35mm is studied. The finite element analysis and structural optimization design of the roller are carried out by using ANSYS software.The structural improvement of the stiffening ring which has a great influence on the deformation of the cylinder is extracted from the optimization results.Firstly, the structure of the belt conveyor is determined.Including all the components of the drum-cylinder, roller shaft, hub and spoke structure design, and the distance between the symmetrical components are calculated.Secondly, the mechanical analysis of the cylinder is carried out by using ANSYS software, and the causes of the breakage of the cylinder weld are found out, and the corrective measures of the reinforcing ring are put forward, and the results of the analysis before and after the improvement are compared to ensure its correctness.Thirdly, the optimized design of the improved drum is carried out.With the help of the optimization module in ANSYS software, three optimal design variables are selected, that is, the thickness of the cylinder, the length and thickness of the reinforcing ring, the stress of the drum as the state variable and the total weight as the objective function.The optimized drum can not only meet the requirements of use, but also save materials and reduce the cost.Finally, the volume parameters of the stiffening ring in the optimization result are selected, and the influence of the stiffening ring with different shapes on the deformation of the cylinder is analyzed by using ANSYS software again.The structural parameters of the optimal shape stiffening ring are solved by combining the function fitting module of MATLAB, which makes the drum meet the requirement of light weight and the deformation of the cylinder is minimized.To sum up, the structural calculation of the redirection drum is carried out in this paper, and the structural improvement of the reinforcing ring is carried out by means of the optimization design of the drum with the help of ANSYS software and the optimization combination of ANSYS and MATLAB at the same time.
【學(xué)位授予單位】：遼寧工程技術(shù)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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