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Fasteners in Railway Track
fasteners in railway track 01 Fixed rail Through fastening, the rail is firmly fixed on the rail pillow to prevent its displacement due to vibration and impact force during train operation. 02 Maintaining gauge Fasteners ensure that the gauge between the rails remains constant, which is...
Features
fasteners in railway track
01
Fixed rail
Through fastening, the rail is firmly fixed on the rail pillow to prevent its displacement due to vibration and impact force during train operation.
02
Maintaining gauge
Fasteners ensure that the gauge between the rails remains constant, which is essential for the smooth running of the train.
03
Transfer load
Fasteners can transfer the load generated during train operation and disperse it to the sleeper and roadbed to protect the track structure from damage.
Working principle
The working principle of railway track fasteners is mainly based on the principle of fastening and restraint. The rail is fixed on the rail pillow by bolts, nuts and other fasteners, and the elastic deformation of the spring bar, washer and other components is used to adapt to the deformation of the track structure. In addition, the insulation block in the fastener can also play an insulating role to prevent the current from being transferred to the ground through the track structure.
Type and structure
There are many types of rail fasteners, which are classified according to their structural characteristics and use environment
Elastic fastener
This fastener has good elasticity, can adapt to the deformation of the track structure, and reduce the vibration and noise of the train during operation. Common elastic fasteners include elastic bar fasteners, shrapnel fasteners, etc.
Rigid fasteners
Compared with elastic fasteners, the rigidity of rigid fasteners is larger, and it is suitable for occasions with high deformation requirements for track structure. Common rigid fasteners are bolt fasteners, wedge fasteners and so on.
Ballastless track fasteners
These fasteners are specially used for ballastless tracks, which are compact in structure and easy to install, and can adapt to the needs of high-speed rail and high-density transportation.
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