Standardisering avjärnvägInstallation påverkar direkt den långsiktiga stabiliteten i järnvägssystemet, och följande viktiga punkter måste fokuseras på:
Miljöanpassning är den grundläggande förutsättningen {{0}} Innan installationen måste driftsmiljö -temperaturen kontrolleras . gummiplattan måste konstrueras i intervallet -10 examen till 40 grad . när det är under 0 grad, det måste vara att vara för att undvika att undvika att undvika att undvika britte freel; although the polyurethane pad has better temperature resistance, it needs to shorten the exposure time in a high temperature environment (above 60℃) to prevent softening and deformation. When constructing in humid weather, it is necessary to ensure that the rail surface of the sleeper is dry, and the accumulated water or frost must be completely removed. If necessary, a moisture-proof film should be laid to isolate water ånga .
Materialmatchning måste vara strikt kontrollerad . Olika spårtyper har tydliga krav för PAD-modeller: höghastighets järnvägar prioriterar polyuretankuddar med en strandhårdhet på 60 ± 5, och konventionella järnvägar kan använda gummikuddar med en strandhårdhet på 55 ± 5; sections with a curve radius of less than 800 meters must be equipped with chamfered anti-lateral shift pads, and their edge slope should be consistent with the inclination of the rail (usually 1:40). It is strictly forbidden to mix pads of different materials or specifications to avoid uneven force due to differences in stiffness.
Driftsspecifikationer är relaterade till installationskvalitet . När du placerar kuddar, undvik direkt kontakt med bara händer och bär rena handskar för att förhindra oljeföroreningar och påverka passformen med sovhytten; special lifting equipment must be used when the rail is in place, and soft pads must be placed at the contact point between the hook and the rail to prevent scratching the bottom of the rail and causing abnormal local force on the pad. When the pad is raised for installation, a thin layer of silicone grease must be applied between each layer to reduce friction, and the bottom layer must be a steel pad to enhance the load-bearing kapacitet .
Quality inspection cannot be ignored. A second tightening is required within 24 hours after installation. At this time, the fasteners of the pad may loosen due to initial compression, and the tightening torque must be kept consistent with the standard value (300-350N・m). An ultrasonic detector is used to spot check the fit density between the pad and the sleeper. If the hollow area exceeds 5%, it needs to be reinstalled. In long-term operation, the edge of the pad needs to be checked every quarter for warping. If warping of more than 3mm is found, it needs to be replaced in time to prevent rainwater from seeping into and eroding the sleeper.
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 .