本文關(guān)鍵詞：脂潤滑球面滾子軸承性能及潤滑脂壽命預(yù)測方法研究　出處：《華東理工大學(xué)》2016年博士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 球面滾子軸承 脂潤滑 載荷分布 熱學(xué)性能 潤滑脂壽命預(yù)測

【摘要】：球面滾子軸承廣泛地應(yīng)用于造紙機(jī)械、礦山機(jī)械、軋鋼機(jī)械等低速重載的機(jī)械設(shè)備中。在不同的工況條件下,球面滾子軸承圓弧滾子與套圈球面滾道之間的接觸類型呈現(xiàn)不同的特征,其力學(xué)和熱學(xué)分析較為復(fù)雜。球面滾子軸承通常應(yīng)用潤滑脂進(jìn)行潤滑,而脂潤滑滾動軸承的性能及潤滑脂壽命預(yù)測是目前研究及應(yīng)用的難點問題。本文以雙列球面滾子軸承為研究對象,系統(tǒng)研究了其力學(xué)性能、滾子-兜孔流體潤滑性能、熱學(xué)性能、潤滑脂老化以及潤滑脂壽命預(yù)測方法。本文的主要的研究內(nèi)容及成果包括：(1)在對雙列球面滾子軸承進(jìn)行力學(xué)分析的基礎(chǔ)上,建立了一個能夠考慮滾子直徑誤差情況下對徑向受載的球面滾子軸承滾子載荷分布及軸承軸心軌跡進(jìn)行計算的數(shù)學(xué)模型。系統(tǒng)地分析了單個滾子存在直徑誤差與多個滾子存在直徑誤差對球面滾子軸承滾子載荷歷程及軸承軸心軌跡的影響規(guī)律；(2)在對徑向受載的球面滾子軸承進(jìn)行擬靜力學(xué)分析的基礎(chǔ)上,建立了球面滾子與保持架直窗式兜孔之間流體動壓潤滑性能的計算方法。該計算方法通過同時求解滾子-兜孔兩側(cè)的二維雷諾方程,可以得到滾子-兜孔流體動壓潤滑油膜壓力分布和油膜厚度分布。結(jié)合具體算例,研究了內(nèi)圈轉(zhuǎn)速、徑向載荷、以及軸承的主要幾何參數(shù)等因素對球面滾子軸承滾子-兜孔流體動壓潤滑性能的影響規(guī)律；(3)基于鋰基潤滑脂四參數(shù)流變學(xué)方程,應(yīng)用局部法建立了脂潤滑雙列球面滾子軸承發(fā)熱率的計算模型。該模型全面考慮了滾子-滾道接觸發(fā)熱、保持架-內(nèi)圈引導(dǎo)面摩擦發(fā)熱、滾子-兜孔摩擦發(fā)熱和滾子攪油發(fā)熱。結(jié)合具體算例,系統(tǒng)地分析了內(nèi)圈轉(zhuǎn)速、徑向載荷、工作溫度、軸承幾何參數(shù)等對脂潤滑球面滾子軸承發(fā)熱率的影響；(4)在局部法建立的脂潤滑球面滾子軸承發(fā)熱率計算的數(shù)學(xué)模型的基礎(chǔ)上,應(yīng)用熱網(wǎng)絡(luò)法建立了脂潤滑球面滾子軸承-軸-軸承座系統(tǒng)瞬態(tài)溫升計算的數(shù)學(xué)模型。該模型能通過數(shù)值求解發(fā)熱量微分方程,得到滾動軸承-軸-軸承座系統(tǒng)各節(jié)點在任意時刻的溫度值。軸承溫升試驗表明：理論計算結(jié)果與試驗結(jié)果十分吻合。結(jié)合一具體算例,數(shù)值模擬研究分析了內(nèi)圈轉(zhuǎn)速、徑向載荷、環(huán)境溫度、軸承幾何參數(shù)、潤滑脂填充量以及潤滑脂類型等參數(shù)對球面滾子軸承溫升的影響規(guī)律；(5)設(shè)計和搭建了一臺復(fù)合鋁基脂潤滑的球面滾子軸承試驗機(jī),并開展不同工況下潤滑脂老化過程的全尺寸軸承試驗研究。應(yīng)用紅外光譜分析、掃描電鏡分析等方法,分析在老化過程中潤滑脂狀態(tài)的變化；(6)分析了影響脂潤滑滾動軸承潤滑脂壽命的因素,結(jié)合現(xiàn)有的經(jīng)驗公式,歸納得到了基于穩(wěn)態(tài)溫度的球面滾子軸承用復(fù)合鋁基潤滑脂的壽命計算公式。建立潤滑脂平均剪切強度的概念,通過對試驗數(shù)據(jù)的歸納,構(gòu)建了基于潤滑脂平均剪切強度的球面滾子軸承用復(fù)合鋁基潤滑脂的壽命計算方法。本文的研究內(nèi)容和取得的成果可為球面滾子軸承的進(jìn)一步研究、優(yōu)化設(shè)計及潤滑脂壽命預(yù)測提供理論支撐。
[Abstract]:Spherical roller bearings are widely used in papermaking machinery, mining machinery, mechanical equipment and other low-speed and heavy-duty rolling machinery. In different conditions, spherical roller bearings, spherical roller and arc ring rolling contact types between show different characteristics, the mechanical and thermal analysis of complex spherical roller bearings are usually used lubricating. Grease lubrication, and grease lubrication rolling performance and grease bearing life prediction is a difficult problem at present. In this paper, the research and application of double row spherical roller bearing as the research object, studied the mechanical properties, roller - Pocket fluid lubrication properties, thermal properties, aging and grease grease life prediction method research. The main contents and contributions of this paper include: (1) based on the mechanical analysis of the double row spherical roller bearing, a roller diameter error can be considered Spherical roller bearing bearing axial load distribution and trajectory of the radial loading mathematical model calculation. Systematic analysis of the existing single roller diameter error and multiple roller influence law of diameter error of spherical roller bearing roller bearing load course and orbit; (2) based on the pseudo static analysis spherical roller bearings for radial loading, a spherical roller and cage straight window pocket hydrodynamic lubrication performance calculation method. The calculation method of two dimensional Reynolds equation by simultaneously solving the pocket on both sides of the roller, the roller can be obtained - Pocket hydrodynamic lubricating oil film pressure distribution and oil the film thickness distribution. An example of the inner ring speed, radial load, and bearing the main geometrical parameters of spherical roller bearing roller - Pocket hydrodynamic lubrication Influence of performance; (3) study equation of lithium grease four rheological parameters based on Application of local law established the calculation model of bearing heating rate grease double row spherical roller. The model fully considers the roller raceway contact heat retainer - inner guide surface frictional heating, roller - pocket and frictional heating the roller stir heating of oil. With a specific example, systematic analysis of the inner ring speed, radial load, temperature, bearing geometrical parameters on effect of grease lubricated spherical roller bearing heating rate; (4) based on the local law of spherical roller bearing grease heating rate model on the application of heat network method to establish the grease lubricated spherical roller bearings - shaft - bearing system transient temperature rise calculation mathematical model. The model can heat differential equation by numerical method, get rolling bearings - shaft - bearing system of each node in any Time temperature. The bearing temperature rise test showed that the theoretical calculation results and the experimental results very well. With a calculation example, numerical simulation analysis of the inner ring speed, radial load, ambient temperature, bearing geometry, grease and grease filling effect of type parameters of spherical roller bearing temperature rise; (5) design and build the spherical roller bearing test machine of a composite aluminum base grease, and carry out a test of full size grease lubricated bearings under different working conditions of the aging process. Application of infrared spectroscopy, scanning electron microscopy, analysis of the changes of grease state during the aging process; (6) factors analysis of the impact of grease lubricated rolling bearing grease life, combined with the existing empirical formula, we have obtained a spherical roller bearing temperature based on composite aluminum base grease life calculation formula is established. The average shear strength of lubricating grease, based on the experimental data of the induction, constructs the calculation method of composite aluminum base grease life with spherical roller bearings, the average shear strength of lubricating grease. Based on the research contents of this paper and the results obtained for spherical roller bearings with further research, optimization design and life prediction of lubricating grease to provide theoretical support.

【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2016
【分類號】：TH133.33

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陸杭聰;李興林;王秋成;曹茂來;;全合成復(fù)合鋰皂潤滑脂的潤滑壽命試驗分析[J];軸承;2015年04期

2 WANG Ailin;WANG Jiugen;;Temperature Distribution and Scuffing of Tapered Roller Bearing[J];Chinese Journal of Mechanical Engineering;2014年06期

3 徐四寧;奚卉;張茜;徐華;王鳳才;;風(fēng)電主軸調(diào)心滾子軸承載荷比對滾子接觸姿態(tài)的影響[J];軸承;2014年02期

4 吳明星;吳維;郭凱;胡紀(jì)濱;;基于流變特性的球軸承差動滑動摩擦熱量研究[J];北京理工大學(xué)學(xué)報;2014年01期

5 吳寶杰;米紅英;劉慶廉;郭小川;陳德友;張廣遼;;輪轂軸承潤滑脂失效的流變學(xué)分析[J];潤滑與密封;2013年08期

6 馮強;吳寶杰;李興林;任成祖;劉建龍;;氧化劣化對鋰基潤滑脂噪聲壽命的影響[J];軸承;2013年05期

7 Yi-Min Shao;Wen-Bing Tu;Zai-Gang Chen;Zhi-Jie Xie;Bao-Yu Song;;Investigation on Skidding of Rolling Element Bearing in Loaded Zone[J];Journal of Harbin Institute of Technology;2013年01期

8 孫浩洋;張艷平;華同曙;;球面滾子的熱彈流研究[J];中國機(jī)械工程;2012年24期

9 頡敏杰;謝驚春;安旭鵬;;軸承潤滑脂壽命試驗方法概述[J];石油商技;2012年05期

10 汪久根;李慧;王愛林;王慶九;;調(diào)心滾子軸承的摩擦學(xué)設(shè)計綜述[J];軸承;2012年07期

，

本文編號：1404670