【摘要】：隨著采礦行業(yè)的不斷發(fā)展和貧礦比例的越來越高,礦石的破碎量日益增大。在道路、橋梁、建筑等工業(yè)行業(yè)中,碎石物料也得到了越來越廣泛的應(yīng)用。圓錐破碎機(jī)是破碎過程的重要一環(huán)。就圓錐破碎機(jī)的設(shè)計(jì)而言,擠壓破碎力是破碎機(jī)結(jié)構(gòu)和強(qiáng)度設(shè)計(jì)的必要依據(jù)。首先,利用巖石破碎過程分析軟件得到單顆粒物料在單軸壓縮下的擠壓力變化情況和破碎過程。再利用Hertz理論研究顆粒間的重疊量來分析層壓破碎過程及其破碎力。分析了物料排布最不利于破碎的情況,提出了破碎機(jī)在該種情況下破碎時(shí)的壓縮量和破碎力計(jì)算方法。將此狀況下的破碎力作為圓錐破碎機(jī)設(shè)計(jì)過程中結(jié)構(gòu)和強(qiáng)度的設(shè)計(jì)依據(jù)。在分析破碎機(jī)的其他受力時(shí),也以此種情況下的破碎力值進(jìn)行求解。其次,系統(tǒng)介紹了圓錐破碎機(jī)的主要參數(shù),并將參數(shù)按照可控與否分類。分析了物料的物理力學(xué)性質(zhì)、粒度分布、腔型、偏心套轉(zhuǎn)速、壓縮比、懸掛點(diǎn)高度等參數(shù)對破碎力的影響。在考慮顆粒尺寸及其變化的情況下詳細(xì)研究了動(dòng)錐公轉(zhuǎn)轉(zhuǎn)速對物料下落和破碎力的影響,提出了最佳偏心套轉(zhuǎn)速的確定方法。再次,將主軸動(dòng)錐部作為一個(gè)整體,分析主軸動(dòng)錐部主要受力,得出了主軸公轉(zhuǎn)的推動(dòng)力是來自于偏心套。利用達(dá)朗貝爾原理,將慣性力作為虛擬的力,與其他外力和約束力一起建立了主軸動(dòng)錐部受力的平衡方程,求解了無法通過分析得到的頂端關(guān)節(jié)軸承的約束力。最后,分析了因主軸動(dòng)錐部的公轉(zhuǎn)和偏心套的結(jié)構(gòu)不對稱引起的圓錐破碎機(jī)的不平衡,在分析了主軸動(dòng)錐部和偏心套旋轉(zhuǎn)產(chǎn)生的慣性力之后,提出了通過放置平衡塊解決動(dòng)不平衡的方案,并提出了平衡重的質(zhì)量和放置方位的計(jì)算方法。
[Abstract]:With the development of mining industry and the increasing proportion of lean ore, ore breakage is increasing day by day. In the road, bridge, construction and other industrial industries, gravel materials have been more and more widely used. Cone crusher is an important part of crushing process. As far as the design of cone crusher is concerned, the crushing force is the necessary basis for the structure and strength design of the crusher. Firstly, the extrusion pressure and breakage process of single particle material under uniaxial compression are obtained by using rock breaking process analysis software. Hertz theory is used to study the overlap between particles to analyze the laminated fracture process and its crushing force. This paper analyses the situation that material arrangement is most unfavorable to crushing, and puts forward the calculation method of crushing capacity and crushing force of crusher in this case. The crushing force under this condition is used as the design basis of the structure and strength in the design process of the cone crusher. In the analysis of other forces on the crusher, the value of the crushing force in this case is also used to solve the problem. Secondly, the main parameters of cone crusher are introduced systematically, and the parameters are classified according to controllable or not. The effects of physical and mechanical properties, particle size distribution, cavity shape, rotation speed of eccentric sleeve, compression ratio and height of suspension point on the crushing force are analyzed. The influence of rotating speed of moving cone on material falling and breaking force is studied in detail considering the particle size and its variation. The method of determining the optimum rotation speed of eccentric sleeve is put forward. Thirdly, the main force of the spindle moving cone is analyzed as a whole, and the driving force of the spindle rotation is obtained from the eccentricity sleeve. By using the principle of Darembert, the inertia force is taken as the virtual force, and the balance equation of the force acting on the spindle's moving cone is established together with other external forces and binding forces, and the binding force of the top joint bearing, which cannot be obtained by analysis, is solved. Finally, the unbalance of the cone crusher caused by the rotation of the moving cone of the spindle and the asymmetry of the structure of the eccentric sleeve is analyzed, and the inertial force caused by the rotation of the moving cone and the eccentric sleeve of the spindle is analyzed. A scheme to solve the dynamic unbalance by placing a balance block is put forward, and the calculation method of the mass of the balance weight and the orientation of the placement is put forward.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD451

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李云龍,王淀佐;高壓料層粉碎理論研究[J];長沙大學(xué)學(xué)報(bào);2003年04期

2 丁耀武;破碎機(jī)的破碎力[J];東北工學(xué)院學(xué)報(bào);1963年04期

3 黃冬明;武殿梁;范秀敏;姚福生;;圓錐破碎機(jī)的多目標(biāo)規(guī)劃設(shè)計(jì)[J];機(jī)械工程學(xué)報(bào);2007年03期

4 董鋼;范秀敏;張曦;秦列輝;;基于層壓破碎理論的圓錐破碎機(jī)破碎力分析及運(yùn)動(dòng)學(xué)研究[J];機(jī)械工程學(xué)報(bào);2010年17期

5 郭年琴,丁凌蓉,黃冬明;層壓破碎模型及破碎特性研究[J];礦山機(jī)械;2005年07期

6 徐博明;楊云川;;圓錐破碎機(jī)的破碎力計(jì)算[J];礦山機(jī)械;2011年02期

7 郎世平;;國內(nèi)圓錐破碎機(jī)的現(xiàn)狀與發(fā)展創(chuàng)新[J];礦山機(jī)械;2011年06期

8 任廷志;李厚旭;金昕;張子龍;;圓錐破碎機(jī)動(dòng)力學(xué)分析[J];礦山機(jī)械;2014年12期

9 ДОБРОВСКИЙ ИДР.;張樹平;;圓錐破碎機(jī)破碎力的確定[J];礦山機(jī)械;1990年05期

10 黃冬明;范秀敏;武殿梁;姚福生;;基于散體物料運(yùn)動(dòng)學(xué)特性的圓錐破碎機(jī)性能優(yōu)化[J];上海交通大學(xué)學(xué)報(bào);2007年04期

相關(guān)博士學(xué)位論文 前1條

1 黃冬明;擠壓類破碎機(jī)工作機(jī)理和工作性能優(yōu)化研究[D];上海交通大學(xué);2007年

相關(guān)碩士學(xué)位論文 前1條

1 康杰;單顆粒脆性材料沖擊破碎三維數(shù)值模擬[D];沈陽理工大學(xué);2010年

，

本文編號(hào)：2326429