At a time when railway transportation is booming, the performance of the rail fastener system is directly related to the safety and efficiency of train operation. With its unique technical advantages and reliable performance, the KPO railway fastener system has become the first choice for many railway construction and maintenance projects, playing a key role in ensuring the stable operation of the railway.
The KPO railway fastener system adopts an asymmetric thread design. Compared with traditional symmetrical threads, the axial tension is increased by about 30%, which can effectively disperse the stress concentration problem. Its core components are made of 40Cr alloy steel and are quenched and tempered. The tensile strength is more than 1000MPa and the yield strength exceeds 800MPa. In heavy-load road scenarios, facing the frequent rolling of trains with an axle weight of more than 30 tons and the violent vibration caused by high-speed driving, the buckle pressure of the KPO fastener system is stably maintained at 18-22kN, and the gauge error is accurately controlled within ±1mm, ensuring a stable connection between the rails and the sleepers, providing a solid guarantee for the safe operation of the train.
| Specifications for ONE unit of KPO type rail fastening system | ||
| Item | Quantity | Material |
| KPO clip | 2 | Q235 |
| Screw spike | 2 | Grade 4.6: Q235 |
| Grade 5.6: 35# | ||
| Grade 8.8: 45# | ||
| HS bolt 4 | 4 | Grade4.6: Q235 |
| Grade5.6: 35# | ||
| Grade8.8: 45# | ||
| Hex nut 2 | Grade 5: 35# | |
| 2 | Grade 8: 45# | |
| Double coil spring washer | 2 | 65Mn |
The KPO railway fastener system adopts a modular, quick-install design, simplifying the complex installation process into a two-step operation of "positioning - locking". The original self-calibration slot structure can automatically align, with an installation accuracy of ±0.5mm, and ordinary workers can get started after simple training. In actual track installation projects, the average daily installation efficiency of a single person can reach 80-100 sets, which is nearly 2 times higher than the traditional method, effectively shortening the railway construction period and accelerating the project progress.