Railcar Coupling Rod Linkage With Integrated Spring Anti-Twist
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Solution Overview
Problem
Conventional articulations for coupling rods in rail vehicles face limitations in horizontal and vertical deflection angles due to complex construction requirements, particularly in the design of anti-rotation devices, which restrict the range of movement and introduce complexity.
Innovation Solution
The articulation incorporates front and rear spring elements that form a form-fitting engagement with the base plate, allowing rotational forces to be transmitted at right angles without slippage, thereby simplifying the anti-twist mechanism and supporting the coupling rod in both vertical and horizontal directions, eliminating the need for additional components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional anti-rotation devices are used to prevent coupling rod twisting, then rotational stability is improved, but device complexity and construction requirements increase
Solution Approach 1:
The patent combines the anti-rotation function with the existing spring element by creating a gear-like interlocking structure between the spring element and base plate. This merges the damping function with the anti-twist function into a single integrated component, eliminating the need for separate anti-rotation devices and reducing overall construction complexity
Solution Approach 2:
The spring element is designed to perform multiple functions simultaneously: it provides damping for tensile and compressive forces while also providing anti-rotation protection through its gear-like engagement with the base plate. This multi-functionality reduces the number of separate components needed in the system
2Stability of the object's composition
If complex anti-rotation devices are implemented, then rotational stability is improved, but the range of deflection angles is reduced
Solution Approach 1:
The gear-like interlocking structure between the spring element and base plate allows for dynamic rotational movement within defined limits. The teeth engage to prevent excessive twisting while still permitting the coupling rod to deflect horizontally and vertically within the required operational range, providing both stability and adaptability
3Stability of the object's composition
If additional anti-rotation components are added, then rotational stability is improved, but manufacturing complexity increases
Solution Approach 1:
The anti-rotation functionality is integrated into the existing spring element through gear-like teeth structures on the spring element and corresponding engagement features on the base plate. This merging eliminates the need for separate anti-rotation components, simplifying the manufacturing process and reducing assembly steps
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
This solution enables effective anti-twist protection and rotational reset of the coupling rod with reduced complexity, allowing for broader deflection angles and minimizing wear on spring elements, while maintaining efficient force transmission.
Implementation Method 1
at least one front spring element made of elastic material arranged between the base plate and the front spring plate and has at least one rear spring element made of elastic material and arranged between the base plate and the rear spring plate
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
The linkage (1) has a push/pull device arranged at a railcar body-lateral end region (3) of a coupling rod (2) and provided with a front spring plate (12). A front spring element (20) is made of flexible material arranged between a baseplate (10) and a front spring plate. A rear spring element (30) is made of flexible material arranged between the baseplate and a rear spring plate (14). The two spring elements stand in contact with the baseplate such that rotation forces are transferred from the coupling rod without a slip, and are passed to the baseplate.