新型密封结构托辊及其试验机的设计研究

发布时间：2018-04-11 06:49

本文选题：托辊 + 密封结构　；参考：《北京化工大学》2011年硕士论文

【摘要】：托辊是广泛应用于煤矿、粮站、矿山等输送粉料和粒料工况的带式输送机中用量大、分布广的部件。托辊的结构比较简单,主要由辊筒、轴承座、轴承、密封件、润滑脂和轴等部件组成。传统的托辊由于工作状况恶劣以及自身机械结构等方面的原因,存在不同程度的易腐蚀、重量大、不耐磨、使用寿命短等缺点。因此,研制出密封结构可靠,使用寿命长的托辊仍然具有实际意义。为了克服上述缺点,本文以托辊的密封结构作为研究重点,设计了新型密封结构的尼龙托辊；参照2009年4月2日发布并于2009年11月1日正式实施的《GB/T 10595-2009带式输送机》标准,设计了测试托辊性能的托辊试验机；用ANSYS软件对托辊进行了有限元的计算和分析；利用所设计的托辊试验机对托辊的性能做测试。本文共设计了两种新型密封结构,并对新型密封结构尼龙托辊和普通金属托辊的启动功率、旋转阻力、磨损量等进行了大量的试验。试验结果表明：新型密封结构尼龙托辊的启动功率小、旋转阻力低、密封性能可靠、磨损率低等优点。通过ANSYS有限元的计算和分析发现,新型密封结构尼龙托辊的力学性能较普通金属托辊的力学性能有了很大的改善了提高。总之,本文通过模拟计算与实际测试相结合的方法,优选到适合煤矿井下带式输送机使用的托辊。该托辊可满足使用单位对于托辊的密封效果、启动功率、旋转阻力、磨损量、使用寿命等方面的苛刻要求。
[Abstract]:Roller is widely used in coal mines, grain stations, mines and other transport of powder and granular conditions of belt conveyor large amount, widely distributed components.Roller structure is relatively simple, mainly by roller, bearing, bearing, seal, grease and shaft and other components.Because of the bad working condition and the mechanical structure of the traditional roller, there are some disadvantages such as easy corrosion, high weight, no wear resistance, short service life and so on.Therefore, the development of reliable sealing structure, long service life of roller still has practical significance.In order to overcome the above shortcomings, this paper focuses on the sealing structure of the roller and designs a new type of nylon roller with seal structure, referring to the standard "GB/T 10595-2009 belt conveyor" issued on April 2, 2009 and formally implemented on November 1, 2009.The roller testing machine is designed, the finite element method is used to calculate and analyze the roller with ANSYS software, and the performance of the roller is tested by the designed roller tester.In this paper, two new sealing structures are designed, and a large number of tests have been carried out on the starting power, rotary resistance and wear of the new sealing structure nylon roller and ordinary metal roller.The results show that:The new type of nylon roller has the advantages of low starting power, low rotary resistance, reliable sealing performance and low wear rate.Through the calculation and analysis of ANSYS finite element method, it is found that the mechanical properties of the new type of nylon roller with sealed structure are improved greatly compared with that of the ordinary metal roller.In a word, the paper optimizes the roller suitable for coal mine belt conveyor by the combination of simulation calculation and actual test.The roller can meet the strict requirements of the working unit in terms of sealing effect, starting power, rotating resistance, wear quantity, service life, etc.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TD528.1;TH222

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