Railway Coupler Blocking Mechanism for Undesired Engagement
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Solution Overview
Problem
Current railway couplers lack a mechanism to prevent undesired coupling, leading to time-consuming and cumbersome disengagement processes when unintended coupling occurs.
Innovation Solution
A coupler with a blocking mechanism that includes a pivotably mounted hook plate and a blocking mechanism comprising a first and second contact portion, where the first member is connected to the hook plate and the second member to the coupler head, preventing rotation of the hook plate by contacting each other, thereby preventing mechanical coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking mechanism is added to prevent undesired coupling, then reliability is improved, but device complexity increases
Solution Approach 1:
The blocking mechanism is segmented into separate functional components: a blocking member with a first contact portion connected to the hook plate, and a second member with a second contact portion connected to the coupler head. This segmentation allows the blocking function to be added without completely redesigning the coupler structure, thereby improving reliability while limiting the increase in overall device complexity.
Solution Approach 2:
The blocking mechanism introduces intermediary contact portions (first and second contact portions) that mediate between the hook plate and the coupler head. These contact portions serve as intermediaries to prevent rotation of the hook plate without requiring direct complex interaction between the hook plate and the coupler head, thus achieving reliable blocking with moderate complexity addition.
2Ease of operation
If the blocking mechanism is made accessible from outside the coupler head, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The first member is arranged to extend at least partly in a transversal direction perpendicular to the longitudinal direction of the coupler, and protrudes through an opening to an outside of the coupler head. This dimensional arrangement allows the blocking mechanism to be operated from outside the coupler head without requiring complex internal mechanisms, improving ease of operation while maintaining relatively simple structure.
3Ease of operation
If the first member is arranged to extend in transversal direction, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The first member is pivotably connected to the hook plate, allowing it to dynamically adjust its position. This dynamic connection enables the first member to extend in the transversal direction for accessibility while maintaining a compact arrangement when not in use, thereby improving ease of operation without significantly increasing the complexity of its arrangement.
Data Source
AI summary
The present invention relates to a coupler comprising a coupler head (11) that houses a mechanical coupler (18) comprising a hook plate (14) With a recess (16) and a shaft (15) mounted on a first end of the hook plate, a blocking mechanism (20) for preventing coupling of the mechanical coupler. The invention also relates to a method to operate a coupler to engage the blocking mechanism.