Polymeric Rail Clamp for Corrosion and Insulation
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Solution Overview
Problem
Existing rail clamps made of steel and rubber are prone to rust, leading to peeling and electrical issues, and are costly and difficult to install, with metallic parts causing safety concerns and high production costs due to complex manufacturing processes.
Innovation Solution
A rail clamp integrally composed of a polymeric composite material produced by pultrusion, molding, or filament winding, eliminating the need for metallic parts and reducing manufacturing steps, with properties that prevent corrosion and ensure electrical insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If rail clamps are made of steel and rubber combination, then mechanical bending strength is achieved, but corrosion resistance deteriorates leading to rust and peeling
Solution Approach 1:
The patent applies composite materials by combining glass fibers with polymer resin to create a fiber-reinforced polymer composite rail clamp. This composite structure provides both the required mechanical strength through fiber reinforcement and corrosion resistance through the polymer matrix, eliminating the rust and peeling issues associated with steel-rubber combinations while maintaining structural integrity.
Solution Approach 2:
The patent changes the material parameters by transitioning from metallic (steel) to polymeric composite materials. This parameter change fundamentally alters the corrosion behavior while maintaining mechanical properties through careful selection of fiber type, resin composition, and fiber-resin ratio, thereby resolving the contradiction between strength and corrosion resistance.
2Strength
If rail clamps are made of steel and rubber with multiple layers, then mechanical properties are satisfied, but manufacturing complexity increases
Solution Approach 1:
The patent merges the structural reinforcement function and the base material function into a single integrated polymer composite material. Instead of combining separate steel and rubber layers, the glass fiber-reinforced polymer provides both structural strength and material integrity in one homogeneous component, significantly simplifying the manufacturing process while satisfying mechanical property requirements.
Solution Approach 2:
By using fiber-reinforced polymer composite materials, the patent achieves the necessary mechanical properties within a single material system rather than requiring multi-layer constructions. This composite approach eliminates the need for complex assembly of different materials and simplifies manufacturing while maintaining or enhancing mechanical performance.
3Strength
If rail clamps use metallic parts, then structural mechanical properties are provided, but electrical insulation deteriorates causing safety concerns
Solution Approach 1:
The patent changes the electrical parameter by replacing conductive metallic materials with insulating polymeric composite materials. The glass fiber-reinforced polymer structure maintains structural mechanical properties while providing inherent electrical insulation, thereby eliminating safety concerns related to electrical conductivity in rail clamp components.
4Manufacturing precision
If complex manufacturing processes are used for steel and rubber rail clamps, then component quality is ensured, but production cost increases
Solution Approach 1:
The patent merges multiple manufacturing operations into a single composite material fabrication process. By producing the rail clamp as an integrated glass fiber-reinforced polymer component rather than assembling separate steel and rubber parts, the manufacturing process is simplified, reducing labor, assembly, and quality control costs while maintaining component quality through consistent material properties.
Data Source
AI summary
The invention relates to a rail clamp for fastening rail equipment, said rail clamp being integrally composed of a polymeric composition produced by pultrusion or molding, vacuum molding or compression molding. It has high mechanical strength. It is anticorrosive and insulating and is preferably composed of a resin and reinforcing fibers and/or a thermoplastic. It is advantageously formed as a one piece structure. The rail clamp is especially used to fasten rails to base slabs and has economic advantages compared to the rail clamps known in the art, which are made of steel coated with rubber.