Double-layer removable turnout vibration damping railway sleeper fasteners belong to medium vibration damping fasteners. Compared with ordinary turnout fasteners, the vibration damping improved by more than 8 dB. The fastener body is pre-assembled together in the factory, and all parts can be easily replaced and maintained. With a large anti-drawing force of the system, it can effectively avoid the risk of train operation caused by the insufficient anti-drawing force of sulfurized turnout damping fasteners.
1. Medium Damping Fasteners: Applied to switch areas, compared with the general switch fasteners vibration reduction of more than 8dB
2. Non-uniform stiffness and integrated molding of the middle pad: While ensuring the rigidity and uniformity of the fastener system, it solves the hidden taken-off danger of the middle pad shear splicing structure, and the track safety is better.
3. Low Life Cost: removable structure, easy on-site replacement, and maintenance, only need to replace the elastic pad.
4. Strong Applicability: Adopting patented self-locking mechanism, and the pre-loading force and stiffness can be adjusted on-site to meet the needs of different working conditions.
5. Rich models: Designed with No. 7 single opening, No. 7 crossing, No. 9 single opening, and No. 9 crossing supporting switch damping fastenings, and can be targeted according to customer requirements.
6. Simple and Quick Installation on Site: pre-assembly before leaving the factory, the installation method isthe same as that of ordinary turnout fasteners
Content | Technical Indicators |
Stiffness | Static stiffness is 20±3KN/mm. |
Dynamic-static Ratio | Dynamic-static ratio no more than 1.35 |
Vibration Damping Effect | Compared with ordinary fasteners improve more than 8d B. |
Fatigue Performance | Single set of fasteners vertical loading 8~40kN, lateral loading 4~20kN, after 3 million times of fatigue test, the rate of change of static stiffness is no more than 10%, Gauge expansion is no more than 6mm, no damage to parts. |
Insulation resistance | >108Q |
Consistency of stiffness on single fastener | Stiffness deviation of different measurement points on a single fastener is controlled within 10%. |
Fastener Transition | No need to set up stiffness transition section |
Interface with Rail | It can be matched with 50kg rails, 60kg rails and many kinds of elastic bar forms. |
Slope of rail bottom | According to the requirements of the design of rail bottom slope |
Interface with sleeper | Suitable for many kinds of rail sleepers, and can be adjusted according to the requirements of design |