Railway Traction Frame with Localized Reinforcement
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Solution Overview
Problem
Existing towing devices for rail vehicles are heavy and costly due to their solid, rectangular support frames, which do not efficiently distribute tensile forces and require excessive material for reinforcement.
Innovation Solution
A lightweight and cost-effective support frame design with a cast structure featuring thinner flanges, recessed areas, and strategically placed reinforcing ribs and flanges to optimize strength and weight distribution, along with a spring assembly and fork head design that reduces material usage and enhances force transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a solid, rectangular support frame with uniform thickness is used, then the load-bearing capacity and strength are sufficient, but the weight and material costs increase significantly
Solution Approach 1:
The support frame transitions from uniform thickness to variable thickness, with thinner regions in low-stress areas and thicker flanges at critical load-bearing locations. This local differentiation optimizes material distribution to match actual stress patterns, reducing overall weight while maintaining necessary strength.
Solution Approach 2:
The support frame is divided into distinct functional zones: a recessed support surface area with reduced thickness for weight reduction, and four thicker flanges positioned at critical force transmission points. This segmentation allows each zone to be optimized independently for its specific functional requirements.
2Strength
If reinforcing ribs are added to increase strength, then the load-bearing capacity improves, but the device complexity and manufacturing costs increase
Solution Approach 1:
Rather than adding multiple reinforcing ribs throughout the structure, the invention strategically places four thicker flanges at specific locations where force transmission is most critical. This localized reinforcement approach achieves necessary strength without the complexity of extensive ribbing.
Solution Approach 2:
The reinforcement strategy segments the structure into a recessed main body and four discrete flange elements. This segmentation simplifies the overall design by concentrating reinforcement only where needed, rather than distributing complex reinforcement throughout the entire support frame.
3Weight of moving object
If the support frame is made thinner to reduce weight, then the weight and material costs decrease, but the load-bearing capacity and strength are compromised
Solution Approach 1:
The support frame features a recessed support surface with reduced thickness for weight reduction, while four thicker flanges are positioned at critical load-bearing locations. This local quality variation ensures that thickness is optimized for each specific functional requirement rather than using uniform thickness throughout.
Solution Approach 2:
The structure is segmented into a thinner recessed support surface area and four thicker flange segments. This segmentation allows the majority of the structure to be lightweight while critical load-bearing zones maintain necessary thickness and strength.
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
The optimized support frame design achieves significant weight reduction and cost savings while maintaining or exceeding the load-bearing capacity of traditional designs, enabling precise force transfer and improved manufacturing efficiency.
Implementation Method 1
the spring assembly 2 consists of several elastomer elements, which are prestressed by means of the tie rod 3
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The traction device has a vehicle-sided connectable supporting frame (1) for supporting at corresponding stoppers of a vehicle. The frame is provided with reinforcement ribs (17, 18, 19, 20) on front side, where the ribs extend in a traction direction. The frame is provided with two flanges (14b, 15b) on each side for supporting at the stoppers. Supports (22) are arranged between the ribs and flanges in such a manner that highly loadable areas of the supporting frame are reinforced. A recess (21) is provided between the flanges.