Rail Anchor With Extended Belly Section For Crosstie Restraint
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Solution Overview
Problem
Current rail anchors have a limited contact-bearing surface area, which reduces their ability to provide longitudinal restraint and can lead to unsafe rail conditions due to deterioration of wood crossties and embedding issues, especially in high-tonnage tracks and varying temperatures.
Innovation Solution
A rail anchor design with an increased contact-bearing surface area in the belly section, comprising a head, tail, and belly section with widened contact surfaces, formed through a manufacturing process involving forging, quenching, and tempering, to create a surface area of at least 3 square inches that extends 1.5 inches downward from the crosstie, maintaining stability without increasing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the contact-bearing surface area of the rail anchor is increased, then the ability to provide longitudinal restraint and dissipate rail force is improved, but the weight of the rail anchor increases
Solution Approach 1:
The patent extends the contact-bearing surface vertically downward from the crosstie top surface by at least 1.5 inches, utilizing the vertical dimension to increase bearing area without proportionally increasing horizontal footprint or weight. This dimensional approach allows the rail anchor to engage deeper into the crosstie material, improving longitudinal restraint capability while controlling weight through optimized geometry rather than simply adding mass.
2Object-affected harmful factors
If the contact-bearing surface area is increased to prevent embedding, then the bearing pressure is reduced, but the rail anchor requires more material and becomes heavier
Solution Approach 1:
The patent concentrates the increased contact-bearing surface area specifically in the belly section where it contacts the crosstie side, rather than uniformly increasing the entire rail anchor structure. This localized quality enhancement reduces bearing pressure at the critical embedding point while minimizing additional material requirements by only expanding the surface area where it is most needed for preventing embedding.
3Reliability
If the rail anchor extends deeper into the crosstie to maintain contact as crossties deteriorate, then the longitudinal restraint is improved, but the installation complexity increases
Solution Approach 1:
The patent designs the contact-bearing surface to dynamically adapt to crosstie deterioration by extending at least 1.5 inches downward, allowing the rail anchor to maintain contact as the crosstie surface degrades over time. The belly section geometry is configured to follow the contour of the crosstie side, enabling the structure to self-adjust to varying crosstie conditions without requiring complex adjustable mechanisms or multiple installation configurations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The increased bearing surface area disperses load on crossties, reduces damage to wood fibers, and maintains rail stability as crossties deteriorate, while avoiding weight and material cost increases, ensuring secure rail anchoring without additional equipment modifications.
Implementation Method 1
formed through a manufacturing process involving forging, quenching, and tempering
Implementation Method 2
formed through a manufacturing process involving forging, quenching, and tempering
Data Source
AI summary
Methods, systems, and apparatus, including an apparatus that is a rail anchor comprising a head, a tail, and a belly section. The belly section comprises a top surface, a bottom surface, and two side surfaces. Each side surface comprises a contact-bearing surface area. The head comprises a bend along a length of the head. The tail comprises a notch. Each contact-bearing surface area has a surface area of at least 3 square inches and is adapted to extend at least 1.5 inches downward from the top of a railroad track crosstie along a side of the railroad track crosstie.