System 300
Rail fastening system for slab track;)
Slab tracks meet all the requirements for combined high-speed, heavy load and urban traffic. The appropriate solution in this case: The rail fastening system 300, which can be pre-assembled. It is suitable for all slab track construction systems.
Advantages
The highly elastic pad substitutes for the elasticity of the ballast bed. A steel load distribution plate with suitable rail pads is used to improve the load distribution over the lastic pad. The rail pad supports the rail, which is held laterally in position by plastic angled guide plates. The rail is permanently tightened by spring-actuation as a result of the long elastic spring deflection of the tension clamp Skl 15. The rail fastening system 300 can be adjusted by 60 mm in height and by 16 mm in track gauge.
Pre-assembly
All the fastening components can be manually or automatically pre-assembled in the sleeper factory. The rail is inserted at the construction site. Fastening components can be lost neither during transport nor during track laying.
Assembly
The sleeper screw is loosened by 2-3 turns. The tension clamp is pushed on the rail foot and tightened. A simple work step which requires no special training. Assembly can be carried out using simple commercially available screwing machines or automatic screwing assemblies.
Rail tensioning and creep resistance
The rail is permanently tightened to the concrete element by spring-actuation through the two torsion spring arms, with a spring deflection of approx. 15 mm and a toe load of approx. 2 x 9 kN. The requisite high creep resistance of the rail, which prevents the dangerous fracture gap in welded rails, is obtained thereby.
Track maintenance
Experience has shown that the Vossloh rail fastening system requires no regular maintenance.
Neutralisation
No fastening elements have to be removed from the sleeper with continuous welding of the rail. The sleeper screws merely have to be loosened but not disassembled.
Protection against tilting
Any up lift or tilting of the rail which may occur when running through narrow track curves is absorbed by the middle bend of the tension clamp after it has overcome the small air gap (between the middle bend of the tensions clamp and rail foot). Permanent deformation of the outer spring arms is therefore excluded.
Height adjustment
The system can be adjusted in height by up to 60 mm by means of rail pads of variable thickness (+ 6, – 4 mm) as well as by using height regulation plates.
Track adjustment
A track adjustment of ± 16 mm in steps of 1 mm is available as standard.
Exchangeability
All components are exchangeable.
Electrical insulation
The rail fastening system 300 is completely electrically insulated as a result of the insulating plastic material of the angled guide plates, rail pads and dowel. No additional insulating components are required between the clamping element and the rail foot.
Reduced creep resistance
The tension clamp Skl B 15 with a reduced creep resistance of approx. 7 kN is available for certain construction schemes, e.g. on bridges.
Further information: