【摘要】：在車輛傳動領(lǐng)域,旋轉(zhuǎn)密封是一種特殊形式的端面動密封件,其作為關(guān)鍵元件,廣泛應(yīng)用于內(nèi)部含有液壓控制的旋轉(zhuǎn)執(zhí)行部件中,如濕式離合器、制動器以及液力變矩器。而旋轉(zhuǎn)密封的性能直接影響到傳動裝置的整體性能,其一旦發(fā)生密封失效,會導致傳動裝置的整體故障。課題以車用旋轉(zhuǎn)密封為研究對象。典型車用旋轉(zhuǎn)密封的材料有鑄鐵、PTFE和PEEK,為保證密封環(huán)的工作性能,減小摩擦功率損失與對偶面磨損,改善潤滑狀態(tài),通常在密封環(huán)工作端面上加工有溝槽,由于鑄鐵材料較PTFE和PEEK等聚合材料彈性模量較大,而且淺槽常用的激光加工法不適合用在聚合材料的加工,所以常常在鑄鐵材料的密封環(huán)的端面上加工深度為微米級的淺槽,而在PTFE和PEEK材料的密封環(huán)上加工深度為毫米級的深槽。對端面加工有淺槽的旋轉(zhuǎn)密封進行了流體動力潤滑計算研究,而對端面加工有深槽的旋轉(zhuǎn)密封端面軸向變形開展了初步的探究。在計算深槽密封環(huán)端面軸向變形時,將密封環(huán)所受的力分解為軸向、徑向和切向分別求解計算,通過傅里葉三角級數(shù)展開、三角函數(shù)疊加等方法得到了周期性的深槽密封環(huán)端面變形表達式。構(gòu)建了旋轉(zhuǎn)密封軸向受力平衡方程,建立了旋轉(zhuǎn)密封混合潤滑狀態(tài)下的油膜承載力和粗糙峰承載力的計算模型,通過仿真計算得到了不同工況下的密封環(huán)的潤滑油膜厚度、油膜承載力和粗糙峰承載力。開展了流體潤滑驗證試驗,油膜厚度測量實驗結(jié)果表明,淺槽旋轉(zhuǎn)密封件工作時能夠產(chǎn)生流體動壓力和微米級的潤滑油膜。通過大量的盤銷試驗,開展了邊界潤滑條件下典型旋轉(zhuǎn)密封件材料的摩擦磨損特性試驗研究,試驗結(jié)果表明,三種典型旋轉(zhuǎn)密封材料的磨損率都隨著粗糙峰承載力的增加而增大,而與轉(zhuǎn)速的關(guān)系較復雜。通過顯微鏡觀察三種材料磨損后的摩擦面狀況,表明三種材料磨損形式主要以磨粒磨損和黏著磨損為主。結(jié)合典型旋轉(zhuǎn)密封材料磨損實驗和流體潤滑油膜厚度試驗的實驗數(shù)據(jù),相繼擬合得到了鑄鐵材料、添加15%碳纖的PTFE材料和PEEK材料的磨損率與密封環(huán)旋轉(zhuǎn)速度和作用載荷的擬合曲面公式。
[Abstract]:In the field of vehicle transmission, rotary seal is a special type of end face dynamic seal. As a key element, it is widely used in rotary actuator with hydraulic control, such as wet clutch, brake and hydraulic torque converter. The performance of rotary seal directly affects the overall performance of the transmission device, once the seal failure occurs, it will lead to the overall failure of the transmission device. The object of study is vehicle rotary seal. In order to ensure the working performance of seal ring, reduce friction power loss and dual surface wear, improve lubricating condition, PTFE and PEEK, usually process grooves on the working face of seal ring. Because cast iron materials have larger elastic modulus than polymeric materials such as PTFE and PEEK, and the laser processing method commonly used in shallow grooves is not suitable for the processing of polymeric materials, it is often used in shallow grooves with micrometer depth on the end surface of the sealing ring of cast iron. On the sealing ring of PTFE and PEEK materials, deep grooves with a depth of mm are processed. The hydrodynamic lubrication calculation of the rotary seal with shallow groove was carried out, and the axial deformation of the end face of the rotary seal with deep groove was studied. In the calculation of axial deformation of the end face of the deep groove seal ring, the force acting on the seal ring is decomposed into axial, radial and tangential directions, respectively, and is expanded by Fourier trigonometric series. The periodic expressions for the deformation of the end face of the deep groove seal ring are obtained by the trigonometric function superposition method. The axial force balance equation of rotary seal is established, and the calculation model of oil film bearing capacity and rough peak bearing capacity under mixed lubrication state of rotary seal is established. The lubricating oil film thickness of seal ring under different working conditions is obtained by simulation. Oil film bearing capacity and rough peak bearing capacity. The oil film thickness measurement results show that the hydrodynamic pressure and micron lubricating oil film can be produced when the shallow groove rotary seal works. Through a large number of disk pin tests, the friction and wear characteristics of typical rotating seal materials under boundary lubrication are studied. The experimental results show that, The wear rate of the three kinds of typical rotating sealing materials increases with the increase of the rough peak bearing capacity, but the relationship between the wear rate and the rotational speed is more complex. The wear surface of the three materials was observed by microscope. The results show that the wear patterns of the three kinds of materials are mainly abrasive wear and adhesive wear. Combined with the experimental data of the wear test of typical rotary seal material and the thickness test of fluid lubricating oil film, the cast iron material was obtained one after another. The fitting surface formula of wear rate of PTFE material and PEEK material with 15% carbon fiber and rotating speed and acting load of seal ring.
【學位授予單位】：北京理工大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：U463.2

【相似文獻】

相關(guān)期刊論文 前10條

1 劉子湛;漲圈旋轉(zhuǎn)密封計算方法的改進[J];工程機械;1985年07期

2 曹冀蜀;金屬旋轉(zhuǎn)密封圈的國產(chǎn)化問題亟待解決[J];工程機械;1987年08期

3 黨建軍,羅凱,張宇文;高壓旋轉(zhuǎn)密封的安全性研究[J];流體機械;2005年03期

4 劉天友;;子午線輪胎成型機機頭旋轉(zhuǎn)密封改造[J];輪胎工業(yè);2009年07期

5 趙穎濤;;高速離心機中的真空旋轉(zhuǎn)密封[J];中國高新技術(shù)企業(yè);2011年12期

6 湯洪生;;旋轉(zhuǎn)密封[J];液壓工業(yè);1984年03期

7 陶仲良;;斜置○形圈——一種新的旋轉(zhuǎn)密封結(jié)構(gòu)[J];機床與液壓;1985年05期

8 賀杰,楊敏嘉;關(guān)于柔性旋轉(zhuǎn)密封[J];石油機械;1990年05期

9 任保才;均壓槽在旋轉(zhuǎn)密封中應(yīng)用的研究[J];煤礦機械;1995年03期

10 胡正隆;杜氏高壓旋轉(zhuǎn)密封圈[J];機床與液壓;1999年04期

相關(guān)會議論文 前3條

1 宋克雙;顧吉豐;許棟梁;周健;;旋轉(zhuǎn)密封綜合試驗裝置的研制[A];中國電子學會電子機械工程分會2009年機械電子學學術(shù)會議論文集[C];2009年

2 羅昭宇;龔烈航;;高壓旋轉(zhuǎn)密封材料[A];中國工程物理研究院科技年報（1999）[C];1999年

3 邵天敏;;旋轉(zhuǎn)密封O形圈潤滑及泄漏分析[A];第三屆全國青年摩擦學學術(shù)會議論文集[C];1995年

相關(guān)重要報紙文章 前2條

1 ;轉(zhuǎn)軸的旋轉(zhuǎn)密封裝置[N];中國包裝報;2004年

2 ;注塑機旋轉(zhuǎn)密封注射油缸[N];中國包裝報;2004年

相關(guān)博士學位論文 前1條

1 趙一民;車用微槽型旋轉(zhuǎn)密封環(huán)潤滑狀態(tài)預測與動態(tài)特性研究[D];北京理工大學;2016年

相關(guān)碩士學位論文 前6條

1 陳國明;典型車用旋轉(zhuǎn)密封材料的摩擦磨損和潤滑特性研究[D];北京理工大學;2016年

2 錢文強;旋轉(zhuǎn)密封圈的拱起現(xiàn)象及其機理研究[D];武漢科技大學;2015年

3 李濤;漲圈型旋轉(zhuǎn)密封裝置及其性能研究[D];浙江大學;2007年

4 陳少華;葉片式液壓擺動油缸旋轉(zhuǎn)密封接觸壓力的研究[D];武漢科技大學;2014年

5 韓金濤;泥磷中溫處理提取黃磷密封旋轉(zhuǎn)裝置研究[D];昆明理工大學;2010年

6 李桂鎮(zhèn);泥磷中溫處理提取黃磷新型實驗裝置進一步完善的研究[D];昆明理工大學;2012年

，

本文編號：2332359