Sambandet mellanStålskenoroch sömnare uppnås genom mellanproduktjärnvägsfästelement, även känd som järnvägsfästelement . Fasteners måste ha tillräcklig styrka, hållbarhet och viss elasticitet . De bör upprätthålla tillförlitlig anslutning mellan skenor och svängare effektivt för en lång tid, förhindra att rälsen rör sig relativt till sömn, utövar buffert och stötdämpning under dynamiska åtgärder och fördröjning av resterna Struktur, underlättande installation, demontering och underhåll . Det finns träfästelement och betongfästelement .
Wooden sleeper fasteners mainly include split type and hybrid type. Split type fasteners, also called "Type K" split fasteners, have high clamping force, which can effectively prevent rail creep. Their disadvantages are many components, high steel consumption and troublesome rail replacement. Split type fasteners are mainly used on ballastless broar .
Components of hybrid fasteners include rail spikes and five-hole double-shoulder iron base plates. Besides using rail spikes to fasten rails, base plates and wooden sleepers together, it uses additional rail spikes to fasten base plates and wooden sleepers separately. This fastening method can reduce vibration of base plates, with few components and convenient installation. Its Nackdelar är låg klämkraft . När skenor avleder uppåt under belastning är skenspikar enkla att dras upp, vilket minskar klämkraften .
Concrete sleeper fasteners should have sufficient clamping force, appropriate elasticity, certain adjustment range for gauge and level, and insulation performance. Clip-type fasteners have simple components and convenient gauge adjustment, but low elasticity and clamping force. They tend to loosen during use, applicable to lines with rails of 50kg/m and below. Spring bar type Använder vårstänger för att klämma fast, med hög klämkraft och elasticitet .
Gnee -järnväg is a professional trading company focusing on the export of railway fasteners, committed to providing reliable rail connection products for global railway construction projects. The main products include a full range of railway fasteners such as various spring clip fastener systems, sleeper bolts, anti-loosening washers and insulating components, which are suitable for various application scenarios such as conventional railways, heavy-duty railways and urban rail transit .