Railway fastener system is the "solid foundation" of railway infrastructure and plays an indispensable role in ensuring the safe and stable operation of railways. From track laying to the construction of various railway facilities, fastener systems are everywhere.
In the track laying process, fasteners are mainly used to fix rails and sleepers. For example, spring clip fasteners fasten rails to sleepers through the elastic pressure of spring clips, which can effectively resist the lateral and longitudinal forces generated by train running and ensure the stability of rail position. This fastener is widely used in ordinary railways and high-speed railways and is a key component for maintaining the geometric shape of the track. Spikes are important tools for firmly fixing rail pads to wooden sleepers. They have strong grip and can prevent the pads from shifting under repeated impacts of trains.
For bridges, high-strength bolts are the core components for connecting steel beam members. Taking the steel beam bridge of the Baolan Railway as an example, a large number of high-strength bolts connect each load-bearing member into a whole, giving the steel beam sufficient strength, rigidity and stability to ensure the safe crossing of the bridge by trains. Hook bolts act like "strong adhesives" to tightly bind bridge sleepers, guardrails and steel beam longitudinal beams together to prevent the bridge deck sleepers from jumping, moving and crawling on the line.
Inside the carriage, various bolts and nuts are used to connect carriage structural parts, install seats and equipment, etc. These fasteners must not only have good fastening performance, but also consider lightweight and aesthetics to meet the design requirements of modern railway carriages.
With the development of railway technology, the requirements for fasteners are becoming increasingly stringent. New products such as anti-loosening nuts and self-locking nuts are constantly emerging to cope with the strong vibration and impact caused by high-speed train operation, and prevent fasteners from loosening and causing safety hazards. In the future, the railway fastener system will develop towards higher strength, better anti-loosening performance and intelligent monitoring, and continue to escort the efficient and safe operation of railway transportation.