【摘要】：帶式輸送機(jī)作為散狀物料和塊狀物料的主要輸送設(shè)備,具有輸送物料種類廣泛、輸送能力范圍寬、輸送線路的適應(yīng)性強(qiáng)、靈活的裝卸料和費(fèi)用低等優(yōu)點(diǎn),被廣泛地應(yīng)用于煤炭、冶金、電力、化工、港口、建材及糧食等行業(yè)。輸送帶是帶式輸送機(jī)最重要的組成部件,幾乎占整個輸送機(jī)系統(tǒng)的40%以上,同時其費(fèi)用也約占整個輸送機(jī)費(fèi)用的一半左右,在整個帶式輸送機(jī)系統(tǒng)中占據(jù)著舉足輕重的地位。然而由于輸送帶在工作時要承受各種大小和性質(zhì)不同的復(fù)雜應(yīng)力作用,以及其惡劣的工作環(huán)境等多方面因素影響,輸送帶經(jīng)常會遭受不同程度的損壞,例如膠面磨損、扯邊、斷芯等,嚴(yán)重時會導(dǎo)致輸送帶的橫向斷裂,一旦輸送帶發(fā)生斷帶將造成非常嚴(yán)重的經(jīng)濟(jì)損失。 本文以帶式輸送機(jī)在實際生產(chǎn)中經(jīng)常出現(xiàn)的輸送帶斷帶問題為背景展開,研究了輸送帶的粘彈特性和力學(xué)模型,并推導(dǎo)了基于懸垂度的輸送帶等效彈性模量表達(dá)式；建立了帶式輸送機(jī)的數(shù)學(xué)模型,并結(jié)合數(shù)值分析的方法在Matlab環(huán)境下對某條上運(yùn)式輸送機(jī)的斷帶事故進(jìn)行了動態(tài)仿真研究,重點(diǎn)討論了輸送帶斷裂后的逆轉(zhuǎn)下滑和回彈卷曲現(xiàn)象的產(chǎn)生及其影響因素；應(yīng)用了有限元分析軟件ABAQUS模擬現(xiàn)場實驗研究輸送帶的力學(xué)性能,將有限元計算所得彈性模量與實驗值相比較,驗證了該方法的可行性及模型準(zhǔn)確性；研究了輸送帶內(nèi)鋼絲繩的拔出過程,以及輸送帶內(nèi)鋼絲發(fā)生斷裂后的力學(xué)特征。
[Abstract]:As the main conveying equipment of bulk and bulk materials, belt conveyor is widely used in coal because of its wide variety of conveying materials, wide range of conveying capacity, strong adaptability of transmission lines, flexible loading and unloading materials and low cost. Metallurgical, power, chemical, port, building materials and grain industries. Conveyor belt is the most important component of belt conveyor, almost accounting for more than 40% of the whole conveyor system, at the same time, its cost is about half of the cost of the whole conveyor, which occupies a pivotal position in the whole belt conveyor system. However, because the conveyor belt is subjected to various complex stresses of different sizes and properties, as well as its harsh working environment and other factors, the conveyor belt is often subjected to various degrees of damage, such as rubber surface wear, rigging, etc. When the core is broken, it will lead to the transversal fracture of the conveyor belt. Once the belt breaks, it will cause very serious economic losses. In this paper, the viscoelastic properties and mechanical model of belt conveyor are studied, and the equivalent elastic modulus expression of conveyor belt based on drape degree is deduced. The mathematical model of belt conveyor is established, and the dynamic simulation of belt breaking accident of a belt conveyor under the environment of Matlab is carried out with the method of numerical analysis. This paper mainly discusses the phenomenon of reverse sliding and springback curling after the fracture of conveyor belt and its influencing factors, and applies the finite element analysis software ABAQUS to simulate the field experiment to study the mechanical properties of conveyor belt. The feasibility and accuracy of the method are verified by comparing the elastic modulus calculated by the finite element method with the experimental data, and the pull-out process of the wire rope in the conveyor belt and the mechanical characteristics of the steel wire in the conveyor belt after fracture are studied.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH222

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 岳許輝;;長距離大運(yùn)量膠帶輸送機(jī)動態(tài)特性的幾點(diǎn)思考[J];中小企業(yè)管理與科技(上旬刊);2013年09期

相關(guān)碩士學(xué)位論文 前1條

1 朱海龍;帶式輸送機(jī)斷帶動特性分析及抓捕器研究[D];青島理工大學(xué);2013年

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本文編號：2269159