Rail Coupler Front Cover With Deformation Zones for Crash Access
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Solution Overview
Problem
Existing front covers for railway couplers fail to protect the coupler end while maintaining the functionality of the crash management system during collisions, as they do not allow for the necessary deformation or access to the coupler when subjected to collision forces.
Innovation Solution
A front cover with a cover body comprising at least one deformation zone that breaks or deforms under collision force, allowing access to the coupler and enabling coupling during collisions, while also protecting the electrical coupler with a non-deformable section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a sturdy front cover is used to protect the coupler end, then protection against moisture, dirt, and animal collision is improved, but access to the coupler during collision is prevented
Solution Approach 1:
The front cover is divided into a first cover body section covering the mechanical coupler and a second cover body section covering the electrical coupler. The first section includes deformation zones that allow access during collision, while the second section remains intact to protect electrical components.
Solution Approach 2:
Different regions of the front cover have different properties: the first cover body section has deformation zones with reduced thickness for mechanical coupler access, while the second cover body section has uniform thickness for electrical coupler protection. This local differentiation resolves the contradiction between collision access and continuous protection.
2Object-affected harmful factors
If the front cover remains intact during collision, then continuous protection is maintained, but collision forces cannot propagate through the coupler for proper energy absorption
Solution Approach 1:
Deformation zones are pre-positioned in the first cover body section at locations that will be encountered during collision. These zones are designed to deform or break under collision force to allow coupler access and force propagation, while the second cover body section remains intact to continue protecting electrical components.
Solution Approach 2:
The first cover body section is designed to be sacrificial - it deforms or breaks during collision to enable crash management functionality. The second cover body section remains intact and can be recovered or reused, providing continuous protection for electrical components even after the first section has fulfilled its sacrificial role.
3Ease of operation
If the electrical coupler is exposed for access during collision, then coupling operation is enabled, but the electrical coupler becomes vulnerable to damage
Solution Approach 1:
The front cover is segmented into two distinct cover body sections: the first section covers the mechanical coupler and includes deformation zones for collision access, while the second section covers the electrical coupler and maintains continuous protection. This segmentation allows the electrical coupler to remain protected even when the mechanical coupler requires access during collision.
Solution Approach 2:
The first cover body section acts as an intermediary that absorbs collision forces and deforms to allow mechanical coupler access, while the second cover body section serves as a protective barrier for the electrical coupler. The intermediary first section sacrifices itself to enable coupling operation without exposing the electrical coupler to damage.
Data Source
Figure 1~2
Figure 3a~3b
Figure 4a~4c
AI summary
The present invention relates to a front cover for a coupler for a rail vehicle, the front cover (1) comprising a cover body (10) for covering a front end of the coupler, wherein the cover body (10) comprises at least one deformation zone (12), said deformation zone (12) having a cover portion (16) that is configured to break or deform when subjected to a collision force for providing access through the cover body (10) at the at least one deformation zone (12) during a collision. The invention also relates to a method for mounting a front cover on a coupler, and to a method for deforming a front cover.