【摘要】：當(dāng)前,對于冶金、礦山、建材、水力、化工等工業(yè)產(chǎn)業(yè),物料的破碎正占據(jù)越來越重要的地位。物料破碎作為一項基礎(chǔ)工程,每年都會有大量的礦山材料和重復(fù)利用的廢料進行粉碎處理。隨著各種破碎材料的不斷增加,對破碎的精度要求不斷加大,還有能源逐漸短缺,因此必須對破碎作業(yè)的現(xiàn)狀進行改進。就破碎機而言,提高其工作的效率,實現(xiàn)“多碎少磨”成為我們研究的重點,而雙齒輥破碎機依靠其先進性,為礦山破碎注入一股活力。本論文以雙齒輥破碎機為研究對象,從結(jié)構(gòu)三維設(shè)計、虛擬仿真、結(jié)構(gòu)強度有限元分析等方面進行了研究,希望能夠?qū)崿F(xiàn)將雙齒輥破碎機應(yīng)用于破碎鐵礦石的目的。本論文首先根據(jù)雙齒輥破碎機的基本結(jié)構(gòu)組成,利用Solidworks軟件建立雙齒輥破碎機系統(tǒng)模型,進行整體的三維設(shè)計,并通過EDEM離散元模擬現(xiàn)實工況,分別模擬出破碎齒破碎煤塊和鐵礦石兩種物料時所承受的破碎力。其次,將以建立的三維模型導(dǎo)入有限元ANSYS軟件,通過EDEM離散元軟件模擬出的最大破碎力對破碎齒進行有限元分析,從而得出破碎齒各個部位應(yīng)力、應(yīng)變的分布情況,確定最大應(yīng)力發(fā)生的部位。通過分析發(fā)現(xiàn)破碎齒在破碎煤礦過程中滿足要求,二破碎齒在破碎鐵礦石過程中強度不夠,還需要在材質(zhì)和破碎結(jié)構(gòu)上進行改進,提高強度,才能將雙齒輥破碎機應(yīng)用在鐵礦石的破碎生產(chǎn)中。最后,本論文利用ANSYS Workbench軟件對破碎系統(tǒng)破碎部件(破碎齒輥和破碎齒)進行了前十階的模態(tài)分析,得到前十階的固有頻率和振型,可以看出前十階的頻率遠(yuǎn)離其固有頻率,證明雙齒輥破碎機在工作時能夠有效地避免發(fā)生共振現(xiàn)象。通過上述分析可謂雙齒輥破碎機的廣泛應(yīng)用提供參考依據(jù)。
[Abstract]:At present, for metallurgy, mining, building materials, hydraulic, chemical and other industrial industries, material crushing is playing a more and more important role. Material crushing as a basic project, every year there will be a large number of mine materials and recycled waste for crushing treatment. With the increasing of all kinds of crushing materials, the requirement of crushing precision is increasing, and there is a shortage of energy, so it is necessary to improve the present situation of crushing operation. As far as crusher is concerned, improving its working efficiency and realizing "more crushing and less grinding" has become the focus of our research, while double-toothed roller crusher relies on its advanced nature to inject vitality into mine crushing. In this paper, the double tooth roller crusher is taken as the research object, from the structural 3D design, virtual simulation, structural strength finite element analysis and so on, it is hoped that the double tooth roller crusher can be applied to the purpose of crushing iron ore. In this paper, according to the basic structure of the double-tooth roller crusher, the system model of the double-tooth roller crusher is established by using Solidworks software, and the whole three-dimensional design is carried out, and the real working condition is simulated by EDEM discrete element. The crushing force of crushing teeth and iron ore are simulated respectively. Secondly, the 3D model is imported into the finite element ANSYS software, and the finite element analysis of the broken tooth is carried out through the maximum breaking force simulated by the EDEM discrete element software, and the distribution of stress and strain in each part of the broken tooth is obtained. Determine where the maximum stress occurs. Through the analysis, it is found that the broken teeth meet the requirements in the process of crushing coal mine, the strength of the second broken teeth is not enough in the process of crushing iron ore, and the material and structure of the broken teeth need to be improved to increase the strength. In order to apply the double-tooth roller crusher in the crushing production of iron ore. Finally, the first ten modes of crushing parts (broken tooth roller and broken tooth) of crushing system are analyzed by ANSYS Workbench software, and the first ten natural frequencies and modes are obtained. It can be seen that the first ten order frequencies are far away from their natural frequencies. It is proved that the double tooth roller crusher can avoid resonance effectively. The above analysis can be described as a reference for the wide application of double-tooth roller crusher.
【學(xué)位授予單位】：遼寧科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD451

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