Elastic Transverse Guide Arrangement for Curve-Adaptive Clearance
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Solution Overview
Problem
Existing track-guided vehicles face challenges in maintaining seating capacity and vehicle width due to lateral clearance limitations, which result in reduced interior space and high wear on transverse guide components under varying curvature, especially with double-decker carriages.
Innovation Solution
Implementing an elastic bearing arrangement in the transverse guide system to allow for variable transverse play, enabling the car body to be guided off-center in tight curves and reducing contact pressures through parallel alignment of contact surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the car body is guided centrally above the bogie, then lateral clearance is maintained on straight stretches, but in tight curves the car body cannot be guided off-center which limits the pivot pin distance and seating capacity
Solution Approach 1:
The transverse guide arrangement is designed to be dynamically adjustable, allowing the car body to be guided off-center in tight curves while maintaining central positioning on straight stretches. The elastic bearing arrangement enables the guide to adapt its positioning based on curve radius, optimizing both lateral clearance and pivot pin distance across different operating conditions.
Solution Approach 2:
The system changes the transverse positioning parameter of the car body relative to the bogie based on the curve radius. In tight curves, the car body is guided off-center by a larger distance, while on straight stretches it remains centrally positioned. This parameter adjustment enables increased pivot pin distance without compromising lateral clearance.
2Reliability
If soft elastic material is used for contact pairs, then wear is reduced, but contact forces are too high causing impractical wear and short service life
Solution Approach 1:
The patent changes the material parameter of the contact surfaces from soft elastic material to hard resilient material. This parameter change allows the contact surfaces to withstand high contact forces while maintaining low wear, resolving the contradiction between material softness and contact force承受能力.
Solution Approach 2:
The system uses composite material properties by combining hard resilient material for contact surfaces with elastic bearing arrangement. This composite approach provides both the hardness to resist high contact forces and the elasticity to accommodate dynamic loading, extending service life while maintaining reliability.
3Productivity
If the number of carriages is reduced to extend the vehicle, then economic costs are reduced, but interior width is reduced and seating capacity is lost
Solution Approach 1:
The patent utilizes the vertical dimension by implementing double-decker carriages with increased pivot pin distance. This allows the vehicle to extend in the vertical direction rather than horizontally, maintaining interior width and seating capacity while reducing the number of carriages needed, thereby improving economic efficiency.
Solution Approach 2:
The dynamic transverse guide arrangement enables the car body to be guided off-center in curves, which allows for increased pivot pin distance in double-decker carriages. This dynamic guidance capability facilitates the vertical stacking of carriages while maintaining adequate interior space, thus increasing seating capacity without proportionally increasing the number of carriages.
4Adaptability or versatility
If lateral clearance is reduced on curves, then curve-dependent clearance limitations are satisfied, but contact pressures on guide components increase causing high wear
Solution Approach 1:
The patent changes the material parameter of the contact surfaces to hard resilient material, which can withstand high contact pressures while maintaining low wear. This allows the system to reduce lateral clearance on curves without causing excessive wear, as the hard resilient material resists the increased contact pressures better than softer materials.
Solution Approach 2:
The system uses a composite approach by combining hard resilient contact surfaces with elastic bearing arrangement. This composite material strategy provides both the hardness to resist high contact pressures and the elasticity to accommodate the dynamic clearance changes in curves, thereby reducing wear while adapting to curve conditions.
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 allows for increased pivot pin distance and vehicle width, reducing wear and maintaining lateral clearance, thereby enhancing seating capacity and ride comfort while extending the service life of guide components.
Implementation Method 1
The first car body-fixed element and/or the first chassis-fixed element has/have an elastic bearing arrangement. The bearing arrangements according to the invention provide elasticity to compensate for angular errors in the transverse guide arrangement.
Data Source
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AI summary
Transverse guide arrangement 100, in particular for a car body arrangement 20 of a track-guided vehicle 1 for transversely guiding a car body 2 relative to a chassis 4, with a first guide arrangement 10.1, 10.2, the first guide arrangement 10.1, 10.2 comprising: a first car body-fixed element 110.1, 110.2 with a first contact surface 112.1, 112.2, a first chassis-fixed element 120.1, 120.2 with a second contact surface 122.1, 122.2, wherein the first contact surface 112.1, 112.2 and the second contact surface 122 form a first contact surface pair 112.1, 112.2, 122. The first car body-fixed element 110.1, 110.2 and/or the first chassis-fixed element 120.1, 120.2 has/have an elastic bearing arrangement 130.