特种工况轴承试验台的研制

发布时间：2018-01-13 15:09

本文关键词：特种工况轴承试验台的研制　出处：《哈尔滨工程大学》2011年硕士论文　论文类型：学位论文

【摘要】：论文阐述了特种工况轴承试验台的研制,目的是为一种使用工况极为特殊的轴承的开发和研制,设计并制造一个专用的试验台。此轴承是一款非标的滚动轴承,是处于研制阶段的某设备的关键部件,其性能决定了设备能否稳定可靠的工作。轴承使用工况的特殊之处在于它工作在高温水蒸汽环境,并在0.6s的时间内,从静止达到转速9000rpm和径向载荷400kN状态,大于与其同等尺寸、同类型标准轴承的额定值的2倍。由于某设备在结构和使用方面的特殊性,难以找到合适的替代品,必须为其研制一款专用的轴承。轴承的载荷类似于一个冲击载荷,传统的轴承疲劳寿命试验已经不能为其提供很好的依据,考虑其加载情况的特殊性设计一个专用的试验台。特种工况轴承试验台的研制是在利用了某大型轴承试验台的主体结构、原动机和部分传动机构的基础上,针对轴承工况的特殊性设计新的传动机构、加载机构、执行部件等实现的,是能够独立装配或拆卸的专用系统。由于大型轴承试验台也是在短暂时间内对轴承进行加速和加载,其载荷形式也类似于一个冲击载荷,在经过了的原理试算之后,认为其原动机可以满足特种工况轴承试验台的加载要求。论文的主要研究内容包括以下几个方面：分析了轴承试验工况的要求和大型轴承试验台的功能参数,完成了特种工况轴承试验台的总体方案设计及原理试算；根据轴承试验工况的最高转速,对增速机组的传动方式和传动比进行了设计,对其传动过程进行了分析；根据轴承试验工况的最大载荷,对加载机组的加载过程进行了分析；分别分析了增速机组和加载机组各自的飞轮、离合器、制动器的工作状态；使用动力学方法分析了轴承与摩擦轮在传动过程的速度变化规律；阐述了特种工况轴承试验台的主要功能部件的设计,应用损伤线性累积理论对关键承载部件摩擦轮进行了接触疲劳接寿命设计；使用有限元软件对主要承载部件的强度进行了分析；使用LabVIEW软件编写了特种工况轴承试验台加速和加载的单轴控制程序,完成了试验台的验收试验,并对验收试验的曲线进行了分析。对样品轴承的试验曲线进行了分析,总结了试验过程所遇到的问题,提出了解决方案。
[Abstract]:This paper describes the development of special working condition bearing test bed, the purpose of which is to design and manufacture a special test bed for the development and development of a bearing with extremely special operating conditions. The bearing is a non-standard rolling bearing. It is a key component of a certain equipment in the stage of development. Its performance determines whether the equipment can work stably and reliably. The special point of the working condition of bearing is that it works in the high temperature water vapor environment. And in the time of 0.6 s, from static to 9000rpm and the radial load of 400kN state, larger than the same size. The rating of the same type of standard bearings is 2 times. Due to the particularity of the structure and use of a certain equipment, it is difficult to find a suitable substitute. A special bearing must be developed for it. The bearing load is similar to an impact load. The traditional fatigue life test of bearing can not provide a good basis for it. Considering the particularity of the loading condition, a special test bed is designed. Based on the main structure, prime mover and part of transmission mechanism of a large bearing test bed, a new transmission mechanism is designed according to the particularity of bearing condition. The special system which can be assembled or disassembled independently is realized by the loading mechanism and the executive parts. Because the large bearing test bench also accelerates and loads the bearing in a short period of time. The load form is similar to that of an impact load. After the experimental calculation of the principle, it is considered that the prime mover can meet the loading requirements of the bearing test-bed under special working conditions. The main contents of this paper include the following aspects: the requirements of bearing test conditions and the functional parameters of large bearing test bench are analyzed, and the overall scheme design and principle trial calculation of special working condition bearing test bed are completed; According to the maximum speed of the bearing test condition, the transmission mode and the transmission ratio of the speedup unit are designed, and the transmission process is analyzed. According to the maximum load of bearing test condition, the loading process of loading unit is analyzed. The operating state of flywheel, clutch and brake of the speed increasing unit and the loading unit are analyzed respectively. The dynamic method is used to analyze the speed change of bearing and friction wheel in the course of transmission. The design of the main functional components of the bearing test-bed under special working conditions is described. The contact fatigue joint life of the friction wheel of the key bearing parts is designed by using the damage linear accumulation theory. The strength of the main load-bearing parts is analyzed by using finite element software. The single axis control program for the acceleration and loading of the bearing test-bed under special working conditions has been compiled by using LabVIEW software, and the acceptance test of the test bed has been completed. The curve of acceptance test is analyzed, the test curve of sample bearing is analyzed, the problems encountered in the test process are summarized, and the solution is put forward.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH133.3;TH87

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