In track structures, rails undergo thermal expansion and contraction with temperature changes, generating longitudinal forces and displacement. Uncontrolled, this may cause misalignment, gauge variation, or abnormal rail gaps. As a critical connector between rails and sleepers, the Pandrol Clip system effectively mitigates such longitudinal displacement to ensure track stability.
Made of high-strength elastic steel, Pandrol Clip is designed with robust clamping force and anti-displacement capability. When rails expand or contract thermally, the clip applies constant downward pressure via its spring, while friction between pads and sleepers creates longitudinal restraint, resisting free rail sliding.
Engineering practice shows standard Pandrol Clips, under proper tension, provide ~9–12kN clamping force per unit. Combined action of multiple clips restricts thermal stress release paths in continuous welded rail (CWR) or long rail lines, reducing deformation risks from thermal effects.
Notably, Pandrol Clip does not fully "fix" rails but allows minimal slippage, avoiding excessive local temperature stress accumulation. This "elastic restraint mechanism" balances displacement control and stress relief.
For enhanced control, Pandrol offers enhanced systems (e.g., Fastclip with locking function or friction-enhanced pads) for special scenarios: bridge joints, high-temperature zones, or sharp curves.
In summary, Pandrol Clip excels in resisting longitudinal displacement, effectively addressing thermal expansion/contraction challenges, and ensuring CWR stability.
GNEE RAILWAY RAILWAY is deeply involved in the field of railway fastener manufacturing, specializing in the production of various types of rail fastener systems and supporting components. The factory has a modern production line and a strict quality control system, and its products have passed a number of international certifications. With mature process technology and rich project experience, we can provide customers with fastener products that meet the standards of various countries and provide comprehensive technical support services. Our products are widely used in domestic and foreign railway construction projects, and have won the trust of customers with stable quality. We are committed to providing safe and reliable connection solutions for global railway projects through continuous improvement and innovation.