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Track Geometry Inspection System


The system employs the technologies such as inertial reference (IR) and laser-video camera measurement to inspect track geometry parameters and the dynamic response of train body and to realize the accurate measurement for track geometry parameters in millimeter level under high-speed traveling conditions. It realizes technical breakthroughs in acquiring and real-time processing of track geometry images of high-speed, establishment of highly accurate and highly reliable IR, sweeping curve measurement and measurement for track long-wave irregularity in millimeter level.


Technical index

Inspection Item

Measuring Range

Accuracy

Wave Length

Speed Range

Gauge

1420~1485mm

1mm

0~400km/h

Alignment

50mm

1.5mm

3~25m

15~400km/h

(right and left)

Alignment

100mm

3mm

25~70m

40~400km/h

(right and left)

Alignment

500mm

5mm

70~200m

70~400km/h

(right and left)

Profile

50mm

1.5mm

3~25m

15~400km/h

(right and left)

Profile

100mm

3mm

25~70m

40~400km/h

(right and left)

Profile

300mm

5mm

70~150m

70~400km/h

(right and left)

Superelevation

175mm

1.5mm

0~400km/h

(cross level)

Twist

50mm

1.5mm

0~400km/h

Curve radius

800~14000m

0.5%

15~400 km/h


Application performance

The high-speed track inspection system has been successfully applied to high-speed comprehensive inspection
train, with the maximum inspection speed up to 400km/h:
CRH2-150C inspection speed 350km/h
CRH2-061C inspection speed 350km/h
CRH2-068C inspection speed 350km/h
CRH2-010A inspection speed 250km/h
CRH380A-001 inspection speed 400km/h
CRH380B-002 inspection speed up to 400km/h

 

CRH380A-001 Geometry Inspection Equipment

 

CRH380B-002 Geometry Inspection Equipment

 

Interface of Geometry Inspection System for Tracks

 

Acquisition Interface of Geometry Inspection System
for Tracks