本文關(guān)鍵詞：特種工況軸承試驗臺的研制　出處：《哈爾濱工程大學》2011年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 軸承 軸承試驗臺 外圈旋轉(zhuǎn)軸承 線性損傷理論 接觸疲勞壽命 動力學分析 有限元分析

【摘要】：論文闡述了特種工況軸承試驗臺的研制,目的是為一種使用工況極為特殊的軸承的開發(fā)和研制,設(shè)計并制造一個專用的試驗臺。此軸承是一款非標的滾動軸承,是處于研制階段的某設(shè)備的關(guān)鍵部件,其性能決定了設(shè)備能否穩(wěn)定可靠的工作。軸承使用工況的特殊之處在于它工作在高溫水蒸汽環(huán)境,并在0.6s的時間內(nèi),從靜止達到轉(zhuǎn)速9000rpm和徑向載荷400kN狀態(tài),大于與其同等尺寸、同類型標準軸承的額定值的2倍。由于某設(shè)備在結(jié)構(gòu)和使用方面的特殊性,難以找到合適的替代品,必須為其研制一款專用的軸承。軸承的載荷類似于一個沖擊載荷,傳統(tǒng)的軸承疲勞壽命試驗已經(jīng)不能為其提供很好的依據(jù),考慮其加載情況的特殊性設(shè)計一個專用的試驗臺。 特種工況軸承試驗臺的研制是在利用了某大型軸承試驗臺的主體結(jié)構(gòu)、原動機和部分傳動機構(gòu)的基礎(chǔ)上,針對軸承工況的特殊性設(shè)計新的傳動機構(gòu)、加載機構(gòu)、執(zhí)行部件等實現(xiàn)的,是能夠獨立裝配或拆卸的專用系統(tǒng)。由于大型軸承試驗臺也是在短暫時間內(nèi)對軸承進行加速和加載,其載荷形式也類似于一個沖擊載荷,在經(jīng)過了的原理試算之后,認為其原動機可以滿足特種工況軸承試驗臺的加載要求。 論文的主要研究內(nèi)容包括以下幾個方面：分析了軸承試驗工況的要求和大型軸承試驗臺的功能參數(shù),完成了特種工況軸承試驗臺的總體方案設(shè)計及原理試算；根據(jù)軸承試驗工況的最高轉(zhuǎn)速,對增速機組的傳動方式和傳動比進行了設(shè)計,對其傳動過程進行了分析；根據(jù)軸承試驗工況的最大載荷,對加載機組的加載過程進行了分析；分別分析了增速機組和加載機組各自的飛輪、離合器、制動器的工作狀態(tài)；使用動力學方法分析了軸承與摩擦輪在傳動過程的速度變化規(guī)律；闡述了特種工況軸承試驗臺的主要功能部件的設(shè)計,應(yīng)用損傷線性累積理論對關(guān)鍵承載部件摩擦輪進行了接觸疲勞接壽命設(shè)計；使用有限元軟件對主要承載部件的強度進行了分析；使用LabVIEW軟件編寫了特種工況軸承試驗臺加速和加載的單軸控制程序,完成了試驗臺的驗收試驗,并對驗收試驗的曲線進行了分析。對樣品軸承的試驗曲線進行了分析,總結(jié)了試驗過程所遇到的問題,提出了解決方案。
[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.
【學位授予單位】：哈爾濱工程大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH133.3;TH87

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