Railway Insulating End Post Segmentation for Rapid Joint Repair
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Solution Overview
Problem
Existing methods for repairing damaged rail insulation joints are time-consuming and require significant dismantling of the existing structure.
Innovation Solution
An electrically insulating railway end post with detachable first and second portions, where the first portion has sealant holding sections with recesses for receiving liquid sealant, allowing easy replacement and integration without removing the second portion from between the rail ends, and a method for repairing the end post by attaching a new first portion and filling the recesses with sealant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire end post is replaced when damaged, then reliability is improved, but loss of time and productivity deteriorate due to complete dismantling
Solution Approach 1:
The end post is divided into two detachable portions: a first portion that can be removed and replaced independently, and a second portion that remains in place between the rail ends. This segmentation allows replacement of only the damaged component rather than the entire end post, significantly reducing repair time while maintaining reliability.
2Ease of repair
If the entire end post structure is dismantled for repair, then ease of repair is improved, but productivity deteriorates due to extended downtime
Solution Approach 1:
By segmenting the end post into removable first portion and stationary second portion, the invention enables easy access to the damaged area for repair while keeping the railway line operational. The first portion can be detached and replaced without removing the second portion from between the rail ends, minimizing disruption to railway productivity.
3Reliability
If sealant is applied to fill gaps in the end post, then reliability is improved, but device complexity increases due to additional components
Solution Approach 1:
The sealant holding section is integrated directly into the first portion of the end post, merging the sealing function with the structural component. This eliminates the need for separate sealing applications or additional components, as the recesses in the first portion itself serve as sealant reservoirs, maintaining reliability while avoiding increased device complexity.
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
Facilitates quick and efficient repair of worn or damaged end posts without disassembling the entire structure, reducing downtime and maintenance time.
Implementation Method 1
the liquid sealant, when it is being poured into the sealant holding section, may have a viscosity before curing of between 45 and 55 Pascal, at 23 C and 50% relative humidity
Implementation Method 2
the recesses are configured to provide a form fit between the sealant and the recesses when the sealant is cured
Data Source
Figure 1
Figure 2A~2B
Figure 3A~4
AI summary
An electrically insulating railway end post (100) adapted for placement between ends (10a, 20a) of a pair of railway rails (10, 20), each of said rails comprising a head section (11, 21), a foot section (13, 23) and a relatively narrow intermediate web section (12, 22) connecting the head section and the foot section, said end post comprising: a first portion (110) and a second portion (120) detachably attached to each other via interlocking elements, wherein the second portion comprises a foot section of the end post; wherein the first portion is provided with a sealant holding section (111a,111b,111c) comprising a plurality of recesses (112a, 112b, 112c) for receiving therein a liquid sealant (160), wherein the recesses are configured to provide a form fit between the sealant and the recesses when the sealant is cured, wherein the first portion (110), including the plurality of recesses, is adapted for insertion between two ends (10a, 20a) of a pair of railway rails. The application further relates to a method of repairing such a railway end post, and to a first portion for such an end post.