Railway Guard Bar Lateral Restraint for Position Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Railway guard rails tend to slip or creep longitudinally due to train traffic, potentially losing their effectiveness in preventing train wheels from contacting V-points at frog junctions, leading to either ineffective protection or impediment.
Innovation Solution
The implementation of adjustable guard rail assemblies with lateral restraints that are removably coupled to the guard rail without physical modification, using a combination of a hook block and back plate with fasteners to restrict movement within a predetermined maximum amount, ensuring the guard rail remains effective in guiding train wheels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the guard rail is made fully adjustable to accommodate track conditions, then the adaptability to different track geometries is improved, but the guard rail tends to slip and creep longitudinally due to train traffic, reducing its reliability
Solution Approach 1:
The guard rail assembly is divided into multiple segments: the guard rail itself, the guide rail support assemblies fixed to the ties, and the lateral restraints. This segmentation allows the guard rail to be adjustable while the support assemblies and restraints provide positional stability, preventing slipping and creeping.
Solution Approach 2:
The lateral restraint acts as an intermediary component between the guard rail and the guide rail support assemblies. It removably couples to the guard rail and restricts its movement, preventing the guard rail from slipping or creeping while allowing for necessary adjustments.
2Reliability
If the guard rail is restricted from moving laterally, then the reliability of preventing wheel contact with V-points is improved, but the ease of adjusting the guard rail to different positions is reduced
Solution Approach 1:
The lateral restraint is designed to be dynamically adjustable. It can be removably coupled to the guard rail at different positions along its length, allowing the guard rail to be adjusted to different lateral positions while maintaining reliability when restrained.
Solution Approach 2:
The lateral restraint is pre-configured with coupling mechanisms that allow it to be attached to the guard rail at specific positions before operation. This preliminary setup enables easy adjustment and positioning of the guard rail while ensuring reliable restriction of movement during operation.
3Reliability
If the lateral restraint is permanently fixed to the guard rail, then the reliability of restricting movement is improved, but the ease of repair and maintenance is reduced
Solution Approach 1:
The lateral restraint system is segmented into separable components that can be removably coupled to the guard rail. This segmentation allows the restraint to be easily removed and replaced for maintenance while maintaining reliable movement restriction during operation.
Solution Approach 2:
The lateral restraint is designed as a replaceable component that can be removed when worn or damaged and recovered through simple reattachment. This approach maintains reliability during service while significantly improving ease of repair and maintenance.
Data Source
AI summary
The disclosure provides a guard bar restraint for restricting movement of a guard bar. The guard bar restraint includes a hook block coupled to the front face of the guard bar, a back plate configured to contact the back face of the guard bar, and at least one fastener configured to hold the hook block against the front face of the guard bar and to hold the back plate against the back face of the guard bar. The guard bar restraint is coupleable to the guard bar and configured to allow no more than a maximum predetermined amount of lateral movement by the guard bar.