Även om slipsplatta ochjärnvägär båda kuddekomponenter i järnvägssystemet, de är i huvudsak olika vad gäller funktionell positionering, strukturella egenskaper och applikationsscenarier . De specifika skillnaderna är följande:
The core definition and installation location are different. Tie plate is a rigid load-bearing component between the sleeper and the rail pad. It is laid directly on the rail bearing surface of the sleeper, contacts the rail pad from above, and is fixed to the sleeper by bolts, forming a hierarchical structure of "sleeper - tie plate-rail pad - rail". Rail pad is an Elastiskt kuddskikt nära botten av skenan, inklämd mellan skenan och slipsplattan (eller direkt med sovhytten), och dess tjocklek är bara 1/5-1/3 på slipsplattan (vanligtvis 3-15 mm vs {{11} mm) .}}
The material and structural characteristics are significantly different. Tie plate is mostly made of cast iron or hot-rolled steel plate, with a groove (depth 2-3mm) and bolt holes on the surface that match the bottom of the rail. It has high strength (tensile strength>=300MPa) and rigidity, and almost no elastic deformation. Rail pads are mainly made of polymer materials such as rubber and polyurethane, and have obvious elasticity (compression can reach 20%-30% of their own thickness). Some products have anti-slip texture treatment on the surface, and the friction coefficient is>=0.6.
Each has its own functional positioning. The core function of tie plate is to expand the pressure-bearing area and disperse the rail load to a larger area of the sleeper (which can reduce the force per unit area of the sleeper by more than 40%). At the same time, the grooves are used to limit the lateral displacement of the rails and assist in maintaining the track gauge. Rail kuddar fokuserar på buffring och stötdämpning, absorberande hjulkanten påverkar energi genom elastisk deformation (vilket kan minska vibrationsacceleration med mer än 25%) och tillhandahålla elektrisk isolering (isoleringsmotstånd> 10⁸Ω) för att undvika kortkretsar i spårkretsar .}
Olika anpassningsförmåga för applikationsscenarier . slipsplatta är en måste-ha-komponent i tunga järnvägar (axelvikt större än eller lika med 25T), och de slitbeständiga egenskaperna hos gjutjärn kan klara av ofta kraftiga effekter; in ordinary railways, tie plates are often omitted for concrete sleepers, and rail pads are directly laid. The selection of rail pads depends more on the track speed level. High-speed railways prefer polyurethane materials (dynamic-static stiffness ratio<=1.3), while conventional railways can choose rubber materials with lower Kostnader . När de två arbetar tillsammans bildas ett sammansatt system av "styvt belastningslager + elastisk buffring" för att gemensamt säkerställa stabiliteten i spårstrukturen.
Gnee -järnvägis 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 .