Premium Railway Fishplate for Enhanced Track Stability and Safety

• Customization: Available
• After-sales Service: One Year
• Warranty: One Year
• Customized: Railway Tools
• Certification: ISO9001
• Type: Railway Tools
• Transport Package: Export Wooden Box
• Origin: Handan, Hebei Province, China
• Production Capacity: 10000

Product Description

Railway rail elastic fasteners are key components that connect rails with sleepers (or track plates), and their core functions include:
Fix the position of the steel rail
Firmly secure the rails to the sleepers or track plates to prevent lateral displacement, longitudinal crawling or overturning of the rails.
2. Provide elastic buffering
Through elastic elements such as rubber pads and spring assemblies, the impact force of train wheel-rail is absorbed, reducing track vibration and noise.
3. Insulation protection
Some fasteners are made of insulating materials (such as nylon and fiberglass) to prevent short circuits in the track circuit and ensure the normal operation of the signal system.
4. Adjust the geometric position of the track
The height, gauge and level of the rails can be fine-tuned to maintain the smoothness of the line.
5. Adapt to temperature deformation
Allow the rails to freely expand and contract when heated and cooled, reducing the damage to the tracks caused by temperature stress.

 

Elastic fasteners are widely used in various railway track structures. Specific scenarios include:
(1) Classified by railway type
High-speed railway: High-speed railway ballastless tracks (such as CRTS type I/II/III slabs) generally adopt highly elastic fasteners (such as WJ-7 and WJ-8 types) to ensure smoothness and ride comfort.
Heavy-haul railways: High-strength fasteners (such as spring bar Type V) are required to withstand the impact of large axle load trains.
Urban rail transit: Vibration damping fasteners (such as type DT2) are mostly used in subways and light rails to reduce noise in tunnels.
(2) Classification by orbital structure
Ballasted track: Spring bar fasteners (such as spring bar Type I and Type II) are used in conjunction with sleepers to adapt to the elasticity of the ballast layer.
Ballastless track: Slab track fasteners (such as Vossloh 300 type) are commonly used in high-speed rail and metro tunnels and are directly anchored to the concrete track slabs.
(3) Application in special sections
Bridges and tunnels: Low-stiffness fasteners (such as low-resistance fasteners) are used to reduce the constraint force of bridge expansion and contraction on the track.
Turnout section: Special fasteners (such as spring bar Type VII) are used to strengthen the fixation of the point rail and the base rail.
In high-cold regions: Low-temperature resistant rubber pads (not brittle at -60ºC) ensure stable elastic performance.

 

A typical elastic fastener system includes the following components:
1. Spring bar (steel spring) :
Core load-bearing component, providing clamping force (such as SKL series spring bars).
2. Rubber pad:
Buffer vibration, with a stiffness typically ranging from 40 to 120kN/mm.
3. Insulated gauge blocks:
Adjust the gauge and isolate the current (in the electrified section).
4. Bolts and embedded sleeves:
Fix the fasteners to the sleepers or track plates.

 

Railway rail elastic fasteners are the "shock absorbers" and "stabilizers" in track structures. Their selection needs to match the line speed, axle load and environmental requirements. In the future, high durability, intelligence and low carbonization will become the main directions of technological upgrading.