本文選題：驅(qū)動(dòng)橋 + 螺紋聯(lián)接��； 參考：《青島理工大學(xué)》2012年碩士論文

【摘要】：驅(qū)動(dòng)橋橋殼與減速器殼聯(lián)接面漏油已成為重卡行業(yè)普遍存在的一項(xiàng)失效模式。分析其原因一般包括聯(lián)接面平面度精度較低、橋殼承載后受力變形嚴(yán)重、螺栓聯(lián)接松動(dòng)、密封膠涂覆斷層等，而其中尤以螺栓聯(lián)接松動(dòng)為主。此處螺栓松動(dòng)、失效，往往導(dǎo)致很嚴(yán)重的后果，一般出現(xiàn)大法蘭處漏油，，嚴(yán)重的導(dǎo)致減速器齒輪損壞整車無(wú)法運(yùn)行，所以此處螺紋防松性能的優(yōu)劣非常重要。 因此，本文從螺紋防松角度出發(fā)，用施必牢楔形螺紋聯(lián)接代替原來(lái)的普通螺紋，并采用了橋殼疲勞試驗(yàn)機(jī)對(duì)其防松性能進(jìn)行試驗(yàn)驗(yàn)證的方法。本文主要研究?jī)?nèi)容包括：螺紋聯(lián)接的緊固件受力分析，防松自鎖原理和松動(dòng)機(jī)理，以及對(duì)預(yù)緊力的控制方法的深入研究。通過(guò)對(duì)優(yōu)化后的施必牢螺紋組合進(jìn)行試驗(yàn)，對(duì)數(shù)據(jù)分析，得出最優(yōu)組合和如何控制擰緊力矩才能到達(dá)最佳防松效果。試驗(yàn)結(jié)果證明，施必牢螺紋配合普通螺栓的聯(lián)接防松效果較普通的螺紋聯(lián)接有明顯提高。 通過(guò)本文的研究，找到了一種理論上可行的能夠明顯改善重卡驅(qū)動(dòng)橋殼處漏油的螺紋聯(lián)接方法，使實(shí)際裝配過(guò)程和車輛維修使用中，螺栓的防松更加實(shí)用，簡(jiǎn)潔，同時(shí)降低企業(yè)成本。此外本文的試驗(yàn)方法和結(jié)論，對(duì)提高汽車關(guān)鍵部位的螺紋聯(lián)接可靠性，改善我國(guó)重卡行業(yè)漏油的現(xiàn)狀有很大幫助。
[Abstract]:The leakage of the connection surface between the drive axle housing and the reducer housing has become a common failure mode in heavy truck industry. The reasons include the low accuracy of plane degree of the connection surface, the serious deformation of the axle shell after bearing, the loosening of the bolt connection and the sealant coating fault, and especially the loosening of the bolt connection. The loosening and failure of the bolts here often lead to very serious consequences. There is usually a large flange leak which seriously causes the gear damage of the reducer to fail to run the whole vehicle. So the advantages and disadvantages of the thread anti-loosening performance here are very important. Therefore, in this paper, from the point of view of thread anti-loosening, the original common thread is replaced by Sibir wedge thread connection, and the method of testing and verifying the anti-loosening performance of the bridge shell fatigue testing machine is adopted. The main contents of this paper are as follows: the mechanical analysis of threaded fastener, the principle of anti-loosening self-locking and the mechanism of loosening, as well as the deep research on the control method of pretightening force. Based on the experiment of the optimized screw thread combination and the analysis of the data, the optimal combination and how to control the tightening torque are obtained to achieve the best anti-loosening effect. The test results show that the anti-loosening effect of the joint with the common bolt is better than that of the common thread joint. Through the research in this paper, a thread connection method which can obviously improve the leakage of the casing of the heavy truck drive axle is found, which makes the bolt anti-loosening more practical and concise in the actual assembly process and vehicle maintenance. At the same time, reduce the cost of enterprises. In addition, the test methods and conclusions in this paper are of great help to improve the reliability of thread connection in the key parts of automobile and to improve the present situation of oil leakage in heavy truck industry in China.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH131.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 廖林清，何渝生;汽車設(shè)計(jì)中的現(xiàn)代設(shè)計(jì)方法和技術(shù)[J];重慶工學(xué)院學(xué)報(bào);1994年03期

2 孫峰,唐宗才;唐氏螺紋的防松原理及效果[J];機(jī)械工程師;2002年05期

3 張瓊敏;發(fā)動(dòng)機(jī)缸蓋螺栓擰緊工藝研究[J];汽車科技;2003年02期

4 宋榮生;螺紋聯(lián)接軸向預(yù)緊力試驗(yàn)分析[J];天津理工學(xué)院學(xué)報(bào);2001年S1期

相關(guān)碩士學(xué)位論文 前2條

1 衛(wèi)道柱;螺紋自動(dòng)擰緊機(jī)的研制[D];合肥工業(yè)大學(xué);2004年

2 景秀并;雙螺母防松振動(dòng)性能分析與研究[D];天津大學(xué);2004年

本文編號(hào)：1879243