In the field of railway engineering, KPO fastener system has become a key component to ensure track stability with its excellent performance. It is mainly composed of gussets, threaded spikes, spring washers, iron seats and buffer pads, etc., and each component works together to ensure that the rails and sleepers are firmly connected.
In terms of ordinary railways, KPO fastener system performs well. The gussets tightly clamp the rails to prevent them from longitudinal and lateral displacement and stabilize the track gauge; the threaded spikes are firmly anchored in the reserved holes of the sleepers to effectively transfer the train load; the spring washers continuously provide pressure to prevent the gussets from loosening; the buffer pads absorb the impact of train operation and reduce the damage to the sleepers and rails. With these characteristics, the KPO fastener system meets the fastening needs of daily operations of ordinary railways and ensures the safe and smooth operation of trains.
In high-speed railways, the advantages of KPO fastener system are more prominent. High-speed trains will generate strong dynamic effects and have extremely high requirements for track stability. The KPO fastener system has a unique structural design, strong buckle pressure and pull-out resistance, can effectively resist various complex external forces, and ensure the stability of the track structure under high-speed operation. For example, on some busy high-speed rail lines, the KPO fastener system has been subjected to high-strength tests for a long time and still maintains good performance, laying a solid foundation for the smooth operation of high-speed trains.
| KPO fastening system | ||||||
| KPO clamp | Screw spike | HS bolt | Hex nut | spring washer | Base plate | |
| Pieces required | 4 | 8 | 4 | 4 | 8 | 2 |
| Material | Q235 | Grade 4.6: Q235 Grade 5.6: 35# Grade 8.8: 45# | Grade4.6: Q235 Grade5.6: 35# Grade8.8: 45# | Grade 5: 35# Grade 8: 45# | 65Mn | Casting iron QT500-7, QT450-10, or forging low carbon steel or high carbon steel; |
| Type; | KPO3, KPO6, KPO9 | M24X150mm M24 x160mm M24 x180mm | HS26, HS32 | As ordered | As ordered | UIC54,UIC60, 50kg rail, 60kg rail,S49 in ordered size |
| NOTE | Standard: DIN5906 | Standard: ISO898-1, UIC864-1 and NF F500-50 | Diameter: 22mm or 24mm. Length: 55mm, 65mm, 75mm, 90mm | Standard: DIN985 | Standard: UIC864-3 | Standard: UIC864-6 |
In addition to railway trunk lines, KPO fastener systems are also widely used in urban rail transit. Urban subways, light rails and other lines are frequently operated, and high durability requirements are placed on track components. The KPO fastener system is made of high-quality materials, and each component has been specially treated to have good wear resistance and corrosion resistance. It can work stably for a long time in complex urban environments, reduce the frequency of track maintenance, and reduce operating costs.
With the continuous development of railway construction, higher requirements are also placed on the performance and application scope of the KPO fastener system. In the future, the system will move towards lightweight and intelligent directions. By adopting new materials, the system weight can be reduced while ensuring performance, and the load on the track structure can be reduced; by integrating intelligent equipment such as sensors, real-time monitoring of the track status can be achieved, and potential faults can be warned in advance, further improving the safety and reliability of railway operations.