摘 要

水潤滑動密封軸承是一種用新型工程復合材料替代貴重金屬作為摩擦副，用自然水替代礦物油作為潤滑介質(zhì)，由多曲面圓弧直線凹槽的橡膠合金襯套和金屬外殼與動密封體等有機結(jié)合為一體的結(jié)構(gòu)，具有減振、降噪、耐磨、可靠、高效、節(jié)能、優(yōu)化軸系結(jié)構(gòu)、裝拆維修簡便等優(yōu)點，從而實現(xiàn)資源節(jié)約與環(huán)境友好的目的。為了拓寬該產(chǎn)品的工程應用領(lǐng)域，通過建立水潤滑動密封軸承試驗臺，研究不同材料、結(jié)構(gòu)、轉(zhuǎn)速、載荷、溫升和潤滑介質(zhì)等對它的摩擦學性能及泄漏量的影響，對提高它的潤滑與密封性能，具有重要意義和工程價值。
本論文在機械傳動國家重點實驗室現(xiàn)有的水潤滑動密封軸承性能試驗臺的基礎(chǔ)上，從該試驗臺的結(jié)構(gòu)組成上著手，對其工作原理進行了詳細地分析和闡述，針對計量泵精確計量微細流量的特點，在Visual Basic 軟件開發(fā)平臺上，利用軟件編程通過對數(shù)據(jù)的采集、儲存以及分析來實現(xiàn)對動密封微細泄漏的計算機自動化動態(tài)檢測。最后，在試驗臺上進行不同載荷和轉(zhuǎn)速工況下的實驗測試研究，為進一步完善該試驗臺的功能與相關(guān)技術(shù)指標，深入開展水潤滑動密封軸承的理論研究和工程應用提供一定的科學技術(shù)依據(jù)。


關(guān)鍵詞：水潤滑，動密封，軸承，摩擦學，試驗臺

ABSTRACT

Water-lubricated dynamic sealing bearings are composed by multi-groove surface arc line rubber alloy bush and metal shell with the dynamic sealing body, using new type engineering complex materials instead of dear metals as friction pair, and nature water instead of mineral oil as lubricating medium, having the advantage of reducing vibration, decreasing noise, wear-resistant, reliable, efficient, saving energy, optimizing the shaft structure and easy maintenance, thus realizing the purpose of resource-saving and environment-friendly. In order to broaden the engineering application area, through establishing the test bed, the thesis study how different materials, structures, rotating speeds, loads, temperatures, lubricating mediums etc influence its tribology performance and leaking rate, and this has important significance and engineering value in improving its lubricated and sealing performance.
Based on the former water lubricated dynamic sealing bearings testing machine in the State Key Lab of Mechanical Transmission of Chongqing University, the thesis definitude the function and technique index, setting about the structure of the testing machine, to analyze and expatiate the working principle in detail. Aiming at the characteristic of calculating small flow exactly for flow control pump, with the software exploitation platform of the Visual Basic, by the way of gathering, storing and analyzing the data using software, the thesis realizes examining dynamically of the dynamic sealing small leaking with computer automatically. Finally, a testing research is made on different loads and rotating speeds conditions on the testing machine, which provide stated technology according for the theory research and engineering apply of the water-lubricated dynamic sealing bearings.


Key words：water-lubricating, dynamic sealing, bearings, tribology, test



目 錄
摘 要 I
ABSTRACT II
目 錄 III
1 緒論 1
1.1課題的背景及實用意義 1
1.2國內(nèi)外研究現(xiàn)狀綜述 2
1.2.1水潤滑動密封軸承的研究形狀 2
1.2.2機械密封測試的研究形狀 4
1.3本章小結(jié) 5
2水潤滑動密封軸承試驗臺的工作原理分析 7
2.1動密封實驗系統(tǒng)實現(xiàn)的功能及技術(shù)指標 7
2.2動密封實驗系統(tǒng)的構(gòu)成 8
2.2.1電機主軸傳動裝置 9
2.2.2壓力倉裝置 11
2.2.3油加壓系統(tǒng) 12
2.2.4計算機檢測和控制系統(tǒng) 18
2.3計量泵工作原理分析 20
2.3.1計量泵的結(jié)構(gòu) 20
2.3.2計量泵控制工作原理 21
2.4本章小結(jié) 22
3 水潤滑動密封軸承試驗臺控制系統(tǒng)的實現(xiàn) 24
3.1需求分析 24
3.1.1問題提出 24
3.1.2系統(tǒng)功能要求 24
3.2總體設(shè)計 25
3.2.1測試系統(tǒng)的構(gòu)成 25
3.2.2測試系統(tǒng)的結(jié)構(gòu)示意圖 25
3.3詳細設(shè)計 26
3.3.1系統(tǒng)界面設(shè)計 26
3.3.2代碼設(shè)計 31
3.4系統(tǒng)調(diào)試 32
3.5本章小結(jié) 32
4 水潤滑動密封試件的測試研究 34
4.1實驗目的 34
4.2實驗方法 34
4.2.1試驗件 34
4.2.2實驗內(nèi)容 35
4.2.3實驗條件 35
4.2.4實驗裝置 35
4.3實驗步驟 36
4.3.1靜態(tài)實驗操作步驟 36
4.3.2動態(tài)循環(huán)實驗操作步驟 36
4.4實驗數(shù)據(jù)記錄 37
4.5實驗結(jié)果分析 38
4.6本章小結(jié) 39
5 總結(jié) 41
致謝 42
參考文獻 43