Type WJ-7 RAI FASTENING SYSTEM(Rail Fastener) for High-Speed Railway Track Fixing

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

≤2.0

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: -6~+6mm;

Gauge adjustment amount: -12~+12mm, 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

≤100kN