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fst type high torsion resistance high vibration damping 01

FST Type High Torsion Resistance High Vibration Damping Fastener

FST-type high torsion resistance vibration-damping fasteners adopt rail suspension structure and wedge self-locking structure, which solves the problem of traditional suspension fasteners, and the vibration-damping effect reaches more than 10 dB. At present, this fastening system in railways is the most mature application kind of high-vibration-damping railway fasteners in China.


FST Type High Torsion Resistance High Vibration Damping Fastener

Advantages of FST Type High Torsion Resistance High Vibration Damping

·Prevention of Rail Side Grinding

Compared with the traditional plate rubber support block, it can effectively prevent the occurrence of rail side grinding at the bend, with large lateral rigidity and strong gauge-keeping ability.


·Strong Vertical Limit and Rail Smoothness

Strong vertical limit and rail smoothness: L-type rubber support block on the rail foot forms a buckling (similar to the buckling effect of the elastic bar), which effectively prevents the occurrence of rail unevenness, realizing anti-loosening in high-twisting.


·Anti-Loosening Safety Design

Anti-loosening safety design: the anti-loosening bolt locks the positioning block, preventing the positioning block from loosening due to train vibration during long-term operation, and eliminating the safety risks caused by the positioning wedge loosening or even pulling out.


·Adjustable Clamping Force

The clamping force is controllable and stepless adjustable: through the positioning design of the locking bolt, the clamping force of each set of fasteners is ensured by the adjustment gasket of different thicknesses, which can realize the adjustment of clamping force of any degree.


·Adjustable Clamping Force

Convenient and quick installation: the tools used in the construction and installation of anti-loose high-torque and high-damping fasteners are the same as those used in ordinary fasteners, without special tools (abandoning hydraulic tools weighing up to 25Kg), and the installation and maintenance are fast and convenient.


FST Type High Torsion Resistance High Vibration Damping Fastener

Performance Indicators of FST Type High Torsion Resistance High Vibration Damping

Project

Technical Indicators

Stiffness

5-10KN/mm, and can be adjusted according to customer requirements

Installation Height

Loading height 32±1, and can be adjusted according to customer requirements

Fatigue Performance

3 million times fatigue test

  • Static stiffness change ≤10%.

  • Track gauge expansion ≤6mm.

  • No part damage or loosening.

2 million times fatigue test

  • Vertical Loading Force of a Single Set of Fasteners: -10 to +40 kN ("-" upward tensile, "+" downward compression)

  • Static stiffness change ≤10%.

  • Longitudinal resistance change ≤20%.

Nail Hole Spacing

It can be adapted to different nail hole according to the requirements of design.

Amount of Rail Adjustment, mm

Gauge

No less than ±10 on one side (without gauge block)

Rail Height

0-+30 0-+30

Vibration Damping Effect

Compared to ordinary elastic separate fastener, the falling hammer test effect is more than 10dB

Interface with Rail

It can be matched with 50kg/m rail, 60kg/m rail and all kinds of spring bars.

Slope of Rail Bottom

It can be set according to the requirements of rail bottom slope

Interface with Rail Sleeper

Applicable to all kinds of rail sleepers, and can be designed according to requirements


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