Rail Coupler Face Pads for Ice Removal
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Solution Overview
Problem
Winter conditions, such as snow and ice accumulation, complicate the coupling process of rail vehicles by increasing load on coupler faces and potentially causing mechanical issues.
Innovation Solution
A coupler face design featuring elevated contact surface segments in the form of removable pads, which are easily replaceable and can be made of different materials or coated for improved performance, along with a method for attaching these pads to the coupler face using screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the coupler face is made with integral contact surface segments, then the structure is robust and durable, but the maintenance cost increases and replacement is difficult when worn or damaged
Solution Approach 1:
The contact surface is divided into separate removable pads that can be independently replaced. Each pad is a discrete component attached to the coupler face, allowing individual pad replacement without replacing the entire coupler face structure. This segmentation enables easy maintenance while keeping the overall structure simple.
Solution Approach 2:
The contact surface segments are extracted from the integral coupler face structure and made into separate removable pads. This extraction allows the pads to be easily removed and replaced independently, solving the maintenance difficulty while maintaining structural integrity of the coupler face.
2Ease of manufacture
If the coupler face has a flat surface, then the manufacturing is simple, but ice and snow accumulation complicates the coupling process in winter
Solution Approach 1:
The pads are provided with elevated contact surface segments that create specific local geometry on the coupler face. This local elevation structure prevents ice and snow accumulation in the contact areas, while the rest of the coupler face can remain simple and easy to manufacture. The elevated segments create air gaps that prevent snow adhesion.
3Reliability
If the contact surface segments are elevated to remove snow and ice, then the coupling performance in winter improves, but the manufacturing precision requirements increase
Solution Approach 1:
The elevated contact surface is segmented into separate pads with standardized elevation heights. This segmentation allows the elevation precision to be achieved through simple pad manufacturing rather than complex face machining. The pads can be manufactured with consistent elevation and simply attached to the coupler face, reducing overall manufacturing precision requirements.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A coupler face (3) of a coupler head (1) for a rail vehicle, comprising a plurality of contact surface segments which are distributed over the coupler face (3) and elevated with respect to regions of the coupler face (3) adjacent to the contact surface segments, characterized in that the plurality of contact surface segments is formed as a plurality of pads (7A-7D) which are removably attached to the coupler face (3) so as to be replaceable upon maintenance or repair services.