In the field of railway engineering, ballastless track is widely used in high-speed railway and urban rail transit projects due to its advantages of high stability, low maintenance and long service life. As a key component to ensure the safe and stable operation of ballastless track, NABLA railway fastener system plays an irreplaceable role.
Features of NABLA railway fastener system
NABLA railway fastener system is widely used in Europe with its unique design and is suitable for a variety of track scenarios including trams, light rails, subways, trunk railways and high-speed railways. Its core component Nabla shrapnel has a special shape. When the nut is tightened, it can generate dynamic and stable buckle pressure on the rail. This buckle pressure is crucial. It can effectively resist various forces generated during train operation, prevent displacement, deformation or loosening of the rail, and ensure that the track geometry is always correct. Compared with traditional fasteners, Nabla shrapnel fastener system can provide more reliable fixing effect and provide solid guarantee for the safe operation of trains.
Advantages of application in ballastless track
High adaptability: In ballastless track structure, the NABLA system can adapt well to its characteristics. For example, the French ballastless track uses the same Nabla fasteners as the ballasted track, and uses a boot-type elastic cushion under the sleeper or concrete support block to simulate the elasticity provided by the ballast track bed. This design not only takes advantage of the ballastless track, but also effectively alleviates the impact of the train on the track during operation through the elastic components of the NABLA system, reduces the damage to the track structure, and extends the service life of the track.
Good stability: Ballastless track has extremely high requirements for track stability. The stable buckle pressure of the NABLA system can ensure that the rails are always in the correct position under complex stress conditions. Whether it is the high-speed travel of high-speed trains or the heavy pressure of heavy-loaded trains, the NABLA system can cope with it easily, maintain the stability of the track, ensure the smoothness of train operation, and reduce the hidden dangers of driving safety caused by track problems.
Easy to install and maintain: The NABLA railway fastener system has a relatively simple structure, which can improve construction efficiency and reduce construction difficulty during the ballastless track construction and installation process. In the subsequent maintenance stage, its design features that facilitate inspection and replacement of components enable maintenance personnel to quickly discover and solve problems, reduce maintenance time and costs, and improve the overall efficiency of railway operations.