- 學位論文
台北捷運系統中運量電聯車轉向架環軸承摩擦塊異音改善之研究
Noise Reduction of Electrically Taipei Metro by Improving the Contact Conditions between the Rubbing Plates and the Friction Blocks
摘要
台北捷運中運量系統，採用高架橋方式設計以木柵、內湖線為代表，主要營運路段在市區內。電聯車木柵線全線由中央系統控制，於大轉彎路段偶有異音或振動現象來自車體。本研究針對此種異音與振動現象做深入研究與探討。 本文目的是對電聯車車體與底盤之間相對轉動時產生的異音振動現象做改善。研究中將實車上聽到的異音複製到實驗測試台，藉由一次實驗一種因素實驗法(One-Factor-at-A-Time)，找出主要的影響因素。也應用電腦輔助分析模擬殘留粒子與薄膜造成摩擦力不均，而引起的振動現象。 研究中得知造成異音與振動現象的主要因素，並針對此些因素提出相對應的定期維修手續或改善措施。修正成果已應用於實車上，結果顯示對異音和振動現象有顯著改善。
並列摘要
A noticeable noise and vibration occurred when the Mass Rapid Train turned on a rail with a large turning angle. A study was performed to investigate the source of the noise and vibration, to find the root causes, and to discuss the corrective actions to improve the issue. The investigation indicates the noise occurs between the slewing ring bearing and the friction sets. The slewing ring bearing is located between the body and chassis systems. It provides a relative rotation between the body and chassis. The friction sets provide friction forces to prevent abrupt movements and to help to stabilize the relative motions between the body and chassis systems. The study showed under certain contact conditions unsmooth turning would occur and cause the noise and vibration. A corrective action was implemented in regular maintenance procedure. The result showed the effect and good improvement.