Type WJ-8 Rail Fastening System (also called Type WJ-8 elastic fastener), which is composed of screw spikes, flat washers, elastic clips, insulating gauge blocks, gauge baffles, under-rail pads, iron pads, elastic pads under iron pads and embedded dowels. In addition, in order to adjust the height of the steel rail, it also includes a fine-tuning pad under the rail and a lower-elevating pad of the iron backing plate.
| Specifications for ONE unit of WJ-8 Rail Fastening system | ||
| Item | Quantity | Material |
| Rail clip | 2 | 60Si2MnA |
| Screw spike | 2 | 20MnTiB |
| Flat washer | 2 | Q235A |
| Rail Insulator | 2 | PA66 |
| Guide plate | 2 | Reinforced Nylon 66 (PA66) |
| Rail pad | 1 | EVA, or rubber |
| Tie plate | 1 | QT450-10 |
| Plastic dowel | 2 | HDPE, Reinforced Nylon 66 (PA66) |
| Rail Adjustable Pad | 2 | PE |
| Tie Plate adjustable pad | 2 | PE |
Adjustment amount of left and right position of single strand rail: -5~+5mm;
Gauge adjustment amount: -10~+10mm, the adjustment level is 1mm.
The height adjustment of the rail is -4~+26mm, and the adjustment level is 1mm.
Performance characteristics of WJ-8 railway fastening system
| No. | Item | Performance | ||||
| 1 | Suitable Rail type | Chinese 60kg/m steel rail | ||||
| 2 | Gauge | 1435mm | ||||
| 3 | Rail bottom slope | sleeper or track slab with 1:40 rail bottom slope | ||||
| 4 | Longitudinal resistance of rail | In general sections, the longitudinal resistance of each group of fastener rails is greater than 9 KN; in low resistance sections, the longitudinal resistance of each group of fastener rails is about 4 KN. | ||||
| 5 | System flexibility | The static stiffness of type A pad is 30~40kN/mm, which is suitable for 250km/h passenger dedicated line (taking into account freight); the stiffness of type B pad is 20~26kN/mm, which is suitable for 350km/h passenger dedicated line; the ratio of dynamic and static stiffness is not more than 2.0 | ||||
| 6 | Dynamic and static stiffness ratio | ≤1.5 | ||||
| 7 | Fatigue performance | The fastener system has no damage to all parts after 3 million load cycles, the gauge expansion is less than 6mm, and the buckling force change is ≤20%; the rail longitudinal resistance change is ≤20%; the joint static stiffness change is ≤25% | ||||
| 8 | Insulation resistance | The fastener system is tested in accordance with EN13146-5, and the insulation resistance between the two rails is greater than 3Ωkm, and it meets the requirements for the insulation resistance of the rail circuit. | ||||
| 9 | Harsh environmental conditions | The fastener system can be removed smoothly after the 300h salt spray test described in EN13146-5. | ||||
| 10 | Adjustment amount of rail left and right position | Adjustment amount of left and right position of single strand rail: -5~+5mm; | ||||
| Gauge adjustment amount: -10~+10mm, the adjustment level is 1mm | ||||||
| 11 | Adjustment amount of rail height | Adjustable amount of rail height: 30mm | ||||
| 12 | Buckle force and stroke | Commonly used elastic clips (W1 type): single elastic clip buckle pressure is greater than: 9kN, elastic range 14mm; small resistance elastic clip (X2 type); single elastic clip buckle pressure 6kN, elastic range 12mm | ||||
| 13 | Pull-out resistance of embedded dowel in sleeper | ≤60kN | ||||
GNEE RAIL also manufacture kinds of Railway Screw Spike, Clip and Clamp, High Tensile Bolt with Nut and Washer, Rail Base(Tie) Plate, Rail Fish Plate, Rail Shoulder, Rail Screw and Spike, Fish Bolt with Nut and Washer, Rail Dowel, Rubber and EVA Pad, Crane Rail and Light Rail and Other rail fastening parts. Contact us for more product information.
