Rail Vehicle Bogie Spring Unit Integrating Driver Pin
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Solution Overview
Problem
Conventional bogies for rail vehicles require significant installation space and are heavy due to the need for a transverse traverse for spring and driver device support, which limits compact design and weight efficiency.
Innovation Solution
Integration of the spring unit with the driver device, where the spring unit encloses the driver pin vertically, eliminating the need for a traverse and allowing for a combination of pneumatic, hydraulic, or rubber springs, resulting in a compact and lightweight design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transverse traverse is used for spring and driver device support, then the bogie structure is stable and functional, but the installation space requirement increases and weight increases
Solution Approach 1:
The spring unit and driver device are merged into a single integrated assembly where the spring unit encloses the driver pin. This combination eliminates the need for a separate transverse traverse, reducing installation space while maintaining structural stability through the integrated design.
Solution Approach 2:
The driver pin is nested within the spring unit's enclosing structure. The spring unit acts as a housing that contains the driver pin, allowing the driver device to be supported without requiring external traverse structures, thus reducing the footprint.
2Reliability
If a transverse traverse is used for spring and driver device support, then the bogie structure is stable and functional, but the weight increases
Solution Approach 1:
By combining the spring unit and driver device into one integrated assembly, the separate traverse structure is eliminated. This merger reduces the total material required and thus the weight, while the spring unit itself provides the necessary structural support.
Solution Approach 2:
The transverse traverse is extracted/removed from the design entirely. Its functions are taken over by the integrated spring unit-driver device assembly, which achieves the same structural support without the additional weight of a separate traverse.
3Area of stationary object
If the spring unit encloses the driver pin vertically, then installation space is reduced and weight is saved, but the structural complexity increases
Solution Approach 1:
The driver pin is nested within the spring unit, creating a compact vertical arrangement. This nesting reduces the horizontal installation space required while the modular nature of the nested components helps manage structural complexity through clear functional separation.
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 integration significantly reduces installation space requirements and achieves weight savings while maintaining effective force transmission between the bogie and chassis, enhancing the overall compactness and efficiency of the rail vehicle's design.
Implementation Method 1
the spring unit to be equipped with a pneumatic spring and/or hydraulic spring whose spring body, in particular bellows, encloses the driver pin
Implementation Method 2
the spring unit to be equipped with a pneumatic spring and/or hydraulic spring whose spring body, in particular bellows, encloses the driver pin
Implementation Method 3
the spring unit can have a rubber spring, that is to say a rubber-elastic spring, the sleeve-shaped spring body of which encloses the driver pin
Data Source
Figure 1~3
Figure 4~5
AI summary
The invention relates to a bogie for a rail vehicle, comprising at least four wheels (3), a driver device (5) for horizontal force transmission between the bogie (1) and a chassis of the rail vehicle, and a spring device (8) for vertical force transmission between the bogie (1) and the chassis. The spring device (8) has a central spring unit (9). A driver pin of the of the driver device (5) passes vertically through the spring unit (9).