Newsletter 高速鐵路簡訊 . 交通部高速鐵路工程局
台灣高速鐵路EM-120軌道線形檢測車簡介 Introduction to the EM-120 Track Survey Car for Taiwan HSR
EM120軌道檢測車。

EM-120」軌道線形檢測車係由奧地利Plasser & Theurer公司生產,以接觸式量測軌道的軌距、水平、方向、高低、平面性等參數,最高檢測速度120 km/hr,目前台灣高鐵線上實際檢測速度為80 km/hr。量測作業係於夜間維修時間帶進行,檢測工作頻率每月進行一次。此外,高鐵公司派員隨乘於700T營運列車上,在前駕駛室司機員座椅後方裝置加速規(列車動搖測試儀),檢測列車行駛之動搖狀況,同為每月檢測一次。每月提出「軌道線形與動搖測試報告」量測結果,可供維修人員瞭解軌道線形並做及時養護,以維持列車高速行駛時之平穩舒適。
高速鐵路之標準軌距為1,435mm,檢測車具有三個轉向架,每一轉向架中央兩側均有一測量輪。由第一個轉向架之測量輪量測軌距。水平線形由三個測量輪做10m弦的量測,垂直線形則由三個轉向架之第2、4、6軸上感測器進行10m弦的量測,其餘20m弦、40m弦則由倍長演算求得。超高係左右兩鋼軌之相對高度差異,(面對里程增加方向)左軌高於右軌為正,反之右軌高於左軌為負,平面性(扭曲)是計算前後2.5m兩點距離間之超高量測值之差異。截至目前檢測結果報告顯示全線軌道品質均維持為優良狀態。

The EM-120 track survey car is manufactured by Plasser & Theurer in Austria. It uses contact measurement method to measure the parameters such as gauge, cross level, alignment, longitudinal level and twist, etc. of the track. The maximum detection speed for THSR is 120 km/hr, and the current actual detection speed is 80 km/hr. Measurements are carried out at night maintenance time, and the frequency of survey is performed once a month. In addition, the vibration status survey is also performed once a month. It is conducted by THSRC staff where the inspector rides on an operating 700T train and installs an accelerometer (train vibration detector) at the rear of the driver’s seat in the cab to record and inspect the vibration status. The monthly “Track Survey and Train Vibration Report” can be used as reference for maintenance personnel to understand the track alignment condition and perform appropriate maintenance actions to maintain the stability and comfort during HSR operation.
The standard gauge of the HSR is 1,435mm. The track survey car has three bogies; there is a measuring wheel on both sides of each bogie, and the measuring wheels of the first bogie measure the gauge. The cross level is measured by three measuring wheels using 10m-chord; the longitudinal level is measured by 10m-chord with sensors on the 2nd, 4th and 6th axis of the three bogies; the 20m-chord and the 40m-chord are derived from the Multiple-Precision floating point number. Cant is the difference in the relative heights of the left and right rails. In the direction of increasing mileage position, the cant value is positive when the left rail is higher than the right rail, whereas the value is negative when the right rail is higher than the left rail. The track twist (distortion) is the difference between the cant measurement values between the two points of 2.5 m distance. Up to now, the test result report shows that the quality of the entire track is maintained in good condition.

  • EM-120軌道檢測車示意圖。
  • 分享: