Type V Fastener System
The elastic clip V-type fastener system is a rail fastening system for retaining rails with shoulders. The elastic clip V-type fastener system is suitable for laying 60kg/m rails on high-speed railways with ballast tracks, among which:
1) High-speed railway with a 350km/h speed rating with a mobile unit (maximum axle weight 170kN);
2) The 250km/h speed grade high-speed railway with the mobile unit (maximum axle weight 170kN) can take into account a small number of ordinary passenger vehicles (the maximum axle weight of the locomotive is 230kN) and a small number of trucks (the maximum axle weight is 230kN).
| Type V Fasteners System Component List | ||
| Item | Quantity | Material |
| Rail clip | 2 | 60Si2MnA |
| Screw spike | 2 | 20MnTiB |
| Flat washer | 2 | Q235A |
| Space pieces | 2 | Q235A |
| Gauge apron | 2 | Rubber |
| Rail pad | 1 | EVA, or rubber |
| Adjustable pad | 1 | PE |
| Plastic dowel | 2 | PA66 |
Type IV rail clip Fastener System
The type IV elastic clip fastener system is a buckle system for a shoulderless track rail. The type IV elastic clip fastener system is suitable for the laying of 60kg/m rails on high-speed railways, including:
1)High-speed railway with a 350km/h speed rating with a mobile unit (maximum axle weight 170kN);
2)The 250km/h speed grade high-speed railway with the mobile unit (maximum axle weight 170kN) can take into account a small number of ordinary passenger vehicles (the maximum axle weight of the locomotive is 230kN) and a small number of trucks (the maximum axle weight is 230kN).
| Number of parts for each set of rail clip IV fastening system | |||||
| Item No. | Name | Qty/set(pcs) | Material | Mass or Volume | Remark |
| 1 | G4 spring clip | 2 | 60Si2MnA | 1.60kg | Used in general areas |
| JA spring clip | 1.26kg | Used at rail joints | |||
| JB spring clip | 1.28kg | ||||
| 2 | Rail shoulder TZ4 | 2 | QT450-10 | 2.80Kg | |
| 3 | Rail insulator G4 | 2 | PA66 | 107.3cm3 | Used in general areas |
| Rail insulator G4J | 2 | 91.4cm3 | Used at rail joints | ||
| 4 | Rubber pad RP4 | 1 | Natural or synthetic rubber | 250cm3 | |
Comparion of Elastic Clip Type IV and V Fastener System
| No. | project | Performance | |
|---|---|---|---|
| Elastic IV type fastener | Type V-Rail fastener | ||
| 1 | Adapt to rail type | China 60kg/m rail | |
| 2 | gauge | 1435mm | |
| 3 | Rail slope | A 1:40 rail bottom slope is placed on the sleeper. | |
| 4 | Rail longitudinal resistance | Each set of fasteners is greater than 9kN. | In general, each set of fasteners is greater than 9kN; for small resistance areas, each set of fasteners is approximately 4kN. |
| 5 | Systematic flexibility | The static stiffness of the under-rubber rubber pad is 60±10kN/mm; the dynamic-static stiffness ratio is not more than 2.0. | |
| 6 | Fatigue performance | The fastener system is tested according to EN13146-4. After 3 million load cycles, all parts are not damaged, the gauge length is less than 6mm, and the buckle pressure, rail longitudinal resistance and node static stiffness meet the following requirements: buckle pressure change ≤ 20 %; Rail longitudinal resistance change ≤ 20%; node static stiffness change ≤ 25%. | |
| 7 | Insulation resistance | The fastener system is tested according to EN13146-5. The insulation resistance between the two rails is greater than 3 Ω·km, and meets the requirements of the track circuit for its insulation resistance. | |
| 8 | Harsh conditions Environmental impact |
The fastener system can be successfully disassembled with a manual disassembly tool after the 300h salt spray test described in EN13146-6. | |
| 9 | Rail left and right position adjustment |
The left-right position adjustment amount of the single- track rail is -4 to +2mm; the gauge adjustment amount is -8 to +4mm, and the adjustment level is 1mm. |
|
| 10 | Rail height adjustment |
Can't adjust | Rail height adjustment position: 10mm; |
| 11 | Buckle pressure and range | The pressure of a single spring bar is not less than 11kN and the span is 13mm. | The commonly used elastic buckle pressure is greater than 10kN, the elastic range is 12mm; the small resistance elastic buckle pressure is 4.5kN, and the elastic range is 9.5mm. |
| 12 | Embedded part pull-out resistance | The pull-out force of the embedded iron seat in the sleeper is not less than 60kN. | The pull-out resistance of the embedded bushing in the sleeper is not less than 60kN. |