四缸径向往复柱塞泵动力端部件的研究

发布时间：2018-03-04 04:38

本文选题：径向柱塞泵　切入点：动力端　出处：《武汉理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着工业技术的高速腾飞及知识经济时代的到来,现代工业设备的自动化水平得到了飞速提高,现代工业装备表现出高度自动化、集成化、智能化的趋势；工业生产对现代设备综合性能提出了越来越高的要求,普通的常规机械设备已不能完全满足使用要求,柱塞泵作为工业设备的重要组成部分同样面临严峻挑战。本论文致力于设计出一种全新的径向柱塞往复泵,为改善基于常规的曲柄连杆机构和传统的凸轮机构往复泵的缺陷,泵的动力端运用微可调滑动机构。拥有设计新颖、结构简单、性能可靠、运行平稳、低耗能、低噪音、装拆便捷,应用范围广等诸多优点。本文所做的一系列的研究和探讨是基于柱塞泵的动力端作为研究目标的,分析了常规曲柄连杆机构及传统凸轮机构柱塞泵的结构原理及其弊端所在,在此基础上开发出了一种新型的四缸径向柱塞泵,并就动力端提出了两种设计方案,详细阐述了其工作原理及结构方案,通过对动力端的关键零部件进行结构设计及工艺分析,进一步改善动力端的性能。利用Pro/E建立动力端两种方案的三维模型,并分析计算两种方案的优劣之处；选取优势方案并将三维模型导入Adams,建立往复泵的动力端模型的虚拟样机,添加边界条件及驱动后对往复泵泵的动力端进行仿真分析计算,快捷方便的得出动力端关键零部件的运动学及动力学参数曲线,可清晰观察柱塞泵的运动学特性。结合理论分析计算及多体动力学仿真分析的结果,进行对比分析研究为泵进一步设计和改进提供参考依据。对偏心主轴完成了结构与工艺特性研究及动平衡设计,可有效减小由主轴组件的质心同其旋转中心不同轴所引起的惯性力。利用ANSYS对偏心主轴进行结构分析和疲劳破坏分析,研究分析两种分析应力、应变情况；同时研究分析偏心主轴振动性,对其进行考虑预应力影响的模态分析,列出各阶固有频率,并考察偏心主轴在各阶固有频率下发生共振时的应力、应变情况以防其发生共振破坏。本文的拥有以下创新之处： 1、该柱塞泵动力端的新型方案采用微可调弧面滑动机构代替常规曲柄连杆机构和传统凸轮机构,使其同时具备的承载能力强及结构简单的优势。 2、将柱塞组件连接处设计成可转动球面式,有效减小了弧形滑块的所受的弯矩；用新型复位机构取代传统的弹簧及油泵复位机构,使得复位简单、可靠。
[Abstract]:With the rapid development of industrial technology and the arrival of the era of knowledge economy, the automation level of modern industrial equipment has been rapidly improved, and modern industrial equipment shows the trend of high automation, integration and intelligence. Industrial production has put forward more and more high requirements for the comprehensive performance of modern equipment. Ordinary conventional machinery and equipment can no longer fully meet the requirements of use. As an important part of industrial equipment, piston pump also faces severe challenges. This paper is devoted to design a new radial plunger reciprocating pump, in order to improve the defects of conventional crank linkage mechanism and traditional cam mechanism reciprocating pump. The pump has many advantages, such as novel design, simple structure, reliable performance, stable operation, low energy consumption, low noise, convenient installation and disassembly, wide application range and so on. A series of research and discussion in this paper is based on the dynamic end of piston pump as the research objective. The structure principle and malpractice of conventional crank linkage mechanism and traditional cam mechanism piston pump are analyzed. On this basis, a new type of four-bore piston pump is developed, and two design schemes for the power end are put forward. The working principle and structure scheme of the pump are described in detail. The structural design and process analysis of the key parts of the power end are carried out. Further improve the performance of the power end. Using Pro/E to build the 3D model of two schemes of power end, and analyze the advantages and disadvantages of the two schemes, select the superior scheme and import the 3D model into Adams, and establish the virtual prototype of the power end model of reciprocating pump. After adding boundary conditions and driving, the kinematics and dynamic parameters of the key parts of the reciprocating pump can be obtained quickly and conveniently by the simulation analysis and calculation of the power end of the reciprocating pump. The kinematics characteristics of piston pump can be observed clearly. The comparative analysis provides a reference for the further design and improvement of the pump. The structure and process characteristics of the eccentric spindle and the design of the dynamic balance are completed. The inertial force caused by the center of mass of the spindle assembly and the different axes of the center of rotation can be effectively reduced. The structural analysis and fatigue failure analysis of the eccentric spindle are carried out by using ANSYS, and the two kinds of analytical stress and strain are studied and analyzed. At the same time, the vibration of the eccentric spindle is analyzed, and the modal analysis considering the influence of prestress is carried out, and the natural frequencies of each order are listed, and the stress of the eccentric spindle when resonance occurs at each natural frequency is investigated. Strain in case of resonance failure. This article has the following innovations:. 1. The new scheme of the piston pump adopts the micro-adjustable globoidal sliding mechanism instead of the conventional crank linkage mechanism and the traditional cam mechanism, which makes the piston pump have the advantages of strong bearing capacity and simple structure at the same time. 2. The connection of plunger assembly is designed as a rotatable spherical type, which effectively reduces the bending moment of the arc slider, and replaces the traditional spring and oil pump reset mechanism with a new reset mechanism, which makes the reset simple and reliable.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH322

【引证文献】