Differences between WJ-8 and SKL railway fastener system

The SKL railway fastener system does use spring clips as clamping parts. Common spring clip models of the SKL system include SKL3, SKL12, SKL14, etc. These spring clips are generally made of spring steel, such as 60Si2CrA, and use the bending and torsional deformation of the material to clamp the rails.

Compared with the WJ-8 fastener system, there are still many differences between the two in terms of structural design, component composition and performance characteristics. In terms of structural design, WJ-8 is an elastic non-separated structure with an iron pad, which relies on concrete shoulders to bear the lateral load transmitted from the rails, reduce the load action position, and enhance the structural stability. The SKL system clamps the rails with spring clips, and one end of the spring clip clamps the bottom and top surface of the rail, and cooperates with components such as the gauge baffle to maintain the stability of the rail. The gauge baffle can transmit the lateral thrust of the rail and can be replaced to adapt to different rail types and gauges.

In terms of component composition, the WJ-8 system has rich components. In addition to a variety of spring bars (W1 type conventional buckle pressure spring bars and X2 type small buckle pressure spring bars), it also includes spiral spikes, flat washers, insulating gauge blocks, gauge baffles, rail pads, iron pads, elastic pads under iron pads and embedded sleeves, etc., and there are also rail fine-tuning pads and iron pads for height adjustment. The SKL system is mainly composed of SKL spring bars, spiral spikes (such as SS35 screw spikes), flat washers, plastic sleeves, guide plates and rail pads. In comparison, its component composition is relatively simple.

In terms of performance characteristics, the insulation performance of the WJ-8 system is outstanding. The engineering plastic insulation block between the shoulder and the rail on the iron pad can effectively improve the insulation performance and ensure good insulation resistance even in bad weather. The track gauge can be adjusted flexibly, and continuous stepless adjustment of ±12mm can be achieved by replacing different gauge blocks. It can also adapt to different resistance requirements and obtain different line resistances by matching different spring bars and pads. The spring bars of the SKL system have good elasticity and buckle pressure, which can provide reliable fastening force for the rails. In addition, the processing of the spring bars is relatively simple, which has certain advantages in some projects with strict cost control.

These differences make the WJ-8 and SKL railway fastener systems suitable for different railway construction scenarios and engineering needs, and enterprises can reasonably choose according to actual conditions.