隔膜泵曲轴轴承承载性能研究

发布时间：2018-07-11 15:03

本文选题：隔膜泵 + 曲轴　；参考：《东北大学》2012年硕士论文

【摘要】：隔膜泵是二十世纪七十年代末在往复式活塞泵基础上,增加隔膜室演变而来的,实现了活塞与输送介质的隔离,从而创造了一项全新的先进输送设备和技术。它不但具有活塞泵坚固耐用、输送流量大、输送压力大的优点,还具有隔离泵本身耐高温、耐高腐蚀、维修方便、易损件寿命高、运行成本低、连续运转效率高、高效节能环保等诸多新优点和新特点。本论文以“隔膜泵曲轴轴承替换”作为主要研究内容,以“连杆大端和小端轴承及曲轴主轴承由滚动轴承代换为滑动轴承”为预期效果,比较全面的对隔膜泵曲轴轴承承载性能进行了分析。本文首先分析隔膜泵的工作原理和结构特征,建立了曲柄滑块机构数学模型,运用MATLAB软件求解运动学和动力学方程；运用Pro/e软件进行隔膜泵传动系统三维建模,在分析了隔膜泵运动机理和受力规律的基础上,利用机械系统动力学仿真软件ADAMS构建虚拟样机,通过样机仿真确定隔膜泵传动系统的运动学和动力学参数,与已建立的数学模型对比验证,运用分析的数据为有限元计算提供载荷依据。通过HyperMesh和Workbench有限元软件对曲轴在滚动轴承工况下进行静力分析,确定曲轴分别在单拐和多拐受力下的应力和变形规律,确定最大应力和应变时曲轴所在的位置,并在这个位置对曲轴在滑动轴承工况下进行曲轴和滑动轴承的接触分析,确定曲轴的应力和应变以及接触应力。最后对连杆进行静力分析,并进行优化设计。
[Abstract]:Diaphragm pump is based on reciprocating piston pump at the end of 1970s, which is evolved by adding diaphragm chamber to realize the separation between piston and transport medium, thus creating a new advanced transportation equipment and technology. It not only has the advantages of strong and durable piston pump, large transportation flow rate and high conveying pressure, but also has the advantages of high temperature resistance, high corrosion resistance, convenient maintenance, long life of easily damaged parts, low operating cost and high continuous operation efficiency. High-efficiency, energy-saving, environmental protection and many other new advantages and new features. In this paper, "diaphragm pump crankshaft bearing replacement" as the main research content, "connecting rod big end and small end bearing and crankshaft main bearing from rolling bearing to plain bearing" as the expected effect. The bearing capacity of diaphragm pump crankshaft bearing is analyzed comprehensively. In this paper, the working principle and structural characteristics of diaphragm pump are analyzed firstly, and the mathematical model of crank and slider mechanism is established, and the kinematics and dynamics equations are solved by MATLAB software, and the three dimensional model of diaphragm pump transmission system is built by means of Pro-e software. On the basis of analyzing the motion mechanism and force law of diaphragm pump, a virtual prototype is constructed by using the mechanical system dynamics simulation software Adams, and the kinematics and dynamics parameters of diaphragm pump drive system are determined by prototype simulation. Compared with the established mathematical model, the data are used to provide the load basis for the finite element calculation. The static analysis of crankshaft under rolling bearing condition is carried out by HyperMesh and Workbench finite element software, and the stress and deformation law of crankshaft under single and multiple crank are determined, and the position of crankshaft under maximum stress and strain is determined. The contact analysis of the crankshaft and the sliding bearing is carried out at this position to determine the stress strain and contact stress of the crankshaft. At last, the static analysis of the connecting rod is carried out, and the optimum design is carried out.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH323

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