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新型輪軌關系試驗臺研究

時間:2019-05-24 21:37來源:畢業論文
基于輪-輪接觸關系,與實際的輪-軌接觸關系相比仍有差距。本文參考國外最新的基于輪-軌接觸關系的試驗臺的發展,借鑒一種新型往復運動機構——行星齒環滑塊機構,提出一種新型

摘要:輪軌磨耗是世界鐵路發展過程中的一個重要問題。在我國,山區線路占很大比重,曲線線路較多,隨著軸重的增加和列車速度的提高,輪軌磨耗越來越嚴重。據鐵道部統計,每年我國因輪軌磨耗造成的損失就達數十億元人民幣。除此之外,輪軌磨耗是造成軌道不平順的主要原因之一,影響列車的乘坐舒適性。輪軌過度磨耗,使得列車在運行過程中,輪軌間會產生較大的作用力,容易引起列車脫軌事故,嚴重影響列車的運行安全。因此,輪軌磨耗問題亟待研究和解決。35671
試驗是研究輪軌磨耗不可缺少的一種技術手段。對輪軌的磨耗試驗研究主要有試驗臺試驗和線路試驗。后者更接近實際情況,但成本昂貴,不易單獨測試某個因素對輪軌磨耗的影響。試驗臺試驗經濟快捷,便于單獨測試各因素對輪軌磨耗的影響,同時,試驗可以達到各種極限工況。性能良好的試驗臺對于研究輪軌磨耗具有很大的實際意義。
傳統的輪軌關系試驗臺,主要基于輪-輪接觸關系,與實際的輪-軌接觸關系相比仍有差距。本文參考國外最新的基于輪-軌接觸關系的試驗臺的發展,借鑒一種新型往復運動機構——行星齒環滑塊機構,提出一種新型輪軌關系試驗臺方案,并完成相應研究。
畢業論文關鍵詞:輪軌關系;行星齒環滑塊機構
A new wheel-rail relationship test rig
Abstracts:Wheel-rail wear is always an important problem during the railway development of the whole world. In our country,the railway in mountainous area is in larger proportion. With the increasing of axle-load and train running speed, wheel-rail wear become more serious. According to statistics of railway ministry, the loss caused by wheel-rail wear is several billion Yuan every yean Besides the economic loss, the wear is one of the main causes of track irregularities, and this is bad for the ride comfort of vehicles. Larger force between wheel and rail will be caused by Excessive wear. This will easily causes derailment accident and affect the vehicle's running safety seriously. So the problem of wheel-rail wear is urgent to be researched and resolved. 源¥自%六:維;論-文'網=www.aftnzs.live
Experiment is an indispensable technical mean for wheel-rail wear research. Experiment on wheel-rail mainly includes test-rig test and line test. The later will be closer to actual conditions, but the cost is much higher and it is not easy to inpidually test the effects of some factors influencing wheel-rail wear. Comparatively, test-rig test will be economic and quick. It is easy to test the effects of each factor influencing wheel-rail wear. At the same time, limit working condition can be reached on test-rig. Test-rig with good performance has greatpracticality significance on wheel-rail wear research.
Traditional test-rigs of wheel-rail relationship are mainly based on wheel-wheel contact relationship. But there is still gap between wheel-wheel contact relationship and wheel-rail contact relationship. In this dissertation, a new type of test-rig based on wheel-rail contact relationship is proposed and relative research on the test-rig is done. This test-rig based on a new type of reciprocating mechanism: planetary gear-ring slider mechanism, and some of foreign test-rigs based on wheel-rail contact relationship are taken as reference.
Key words: wheel-rail relationship; planetary gear-ring slider mechanism;
 目錄
1緒論    1
1.1選題的目的和意義    1
1.2國內外研究現狀與水平    1
1.3本論文的主要工作    3
2試驗臺模塊化設計    5
2.1模塊化設計    5
2.2傳動模塊設計    6
2.2.1往復運動機構的結構與運動學分析    6
2.2.2 行星齒環滑塊機構介紹    8 新型輪軌關系試驗臺研究:http://www.aftnzs.live/zidonghua/20190524/33717.html
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