The track is constantly exposed to vertical and lateral deformation
under repeated loading by trains. Periodic measurement of the
resulting track displacement (track irregularity) and adequate repair
are vital to ensure riding comfort and running safety. To meet this
requirement, a track inspection train is effectively utilized.
Inspection of track displacement on the Shinkansen line is carried out
by the track inspection car incorporated in the trainset of electric and
track inspection train. "Doctor Yellow" having been used so far (Fig.
1) is based on the three-bogie inspection system and the maximum
speed has been 210 km per hour according to the running
performance.
In the initial phase of introduction, passenger cars also ran at this
speed, and there was no problem. Subsequently, the speed of the
passenger train has been increased, accompanied by the following
issues:
- When the speed of the inspection train alone remains low, train
scheduling is inconvenienced.
- In the inspection train, dynamic status of the track, contact wire and
others while running are identified correctly, so it is hoped that
running performance is as close as possible to the operating
conditions of the passenger train.
For these two reasons, the speed of the track inspection car has
needed to be increased.
This required commercial use of a two-bogie type inspection car free
from running performance problems. To meet this requirement, we
started development for commercial use using the train STAR21, etc.
that had been manufactured on a tentative basis for high-speed
running tests. Using the achievements of this development, we
adopted a new inspection train East-i for electrical equipment and
track, capable of running at 275 km per hour, the same speed as
The track is constantly exposed to vertical and lateral deformation
under repeated loading by trains. Periodic measurement of the
resulting track displacement (track irregularity) and adequate repair
are vital to ensure riding comfort and running safety. To meet this
requirement, a track inspection train is effectively utilized.
Inspection of track displacement on the Shinkansen line is carried out
by the track inspection car incorporated in the trainset of electric and
track inspection train. "Doctor Yellow" having been used so far (Fig.
1) is based on the three-bogie inspection system and the maximum
speed has been 210 km per hour according to the running
performance.
In the initial phase of introduction, passenger cars also ran at this
speed, and there was no problem. Subsequently, the speed of the
passenger train has been increased, accompanied by the following
issues:
- When the speed of the inspection train alone remains low, train
scheduling is inconvenienced.
- In the inspection train, dynamic status of the track, contact wire and
others while running are identified correctly, so it is hoped that
running performance is as close as possible to the operating
conditions of the passenger train.
For these two reasons, the speed of the track inspection car has
needed to be increased.
This required commercial use of a two-bogie type inspection car free
from running performance problems. To meet this requirement, we
started development for commercial use using the train STAR21, etc.
that had been manufactured on a tentative basis for high-speed
running tests. Using the achievements of this development, we
adopted a new inspection train East-i for electrical equipment and
track, capable of running at 275 km per hour, the same speed as
การแปล กรุณารอสักครู่..