Adjustable Deck Railroad Car for Multi-Height Vehicle Transport
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Solution Overview
Problem
Existing railroad freight cars face challenges in efficiently carrying multiple types of motor vehicles of different sizes while maintaining protection against pilferage and damage, and in being easily convertible between tri-level and bi-level configurations within standard clearance envelopes.
Innovation Solution
The design includes a railroad car body with adjustable vehicle-carrying decks that can be positioned at different heights to accommodate various vehicle sizes, featuring cambered decks that minimize vertical dimensions in bi-level configuration and provide ample clearance in tri-level configuration, along with hinged and movable deck sections for optimal vertical clearance and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the railroad car is designed with fixed deck heights to maximize vehicle capacity, then the number of vehicles that can be carried is increased, but the ability to accommodate different types of vehicles of varying sizes is reduced
Solution Approach 1:
The patent applies the dynamics principle by making the intermediate deck movable rather than fixed. The intermediate deck can be positioned at different heights along the side posts, allowing the railroad car to dynamically reconfigure its deck arrangement. This enables the car to carry either three levels of vehicles (tri-level configuration) or two levels (bi-level configuration) depending on the size and type of vehicles being transported, thus resolving the contradiction between maximizing vehicle capacity and accommodating different vehicle types.
2Object-affected harmful factors
If the railroad car is enclosed with roof and end doors to protect vehicles from pilferage and damage, then vehicle protection is improved, but the overall height is limited by clearance envelope restrictions
Solution Approach 1:
The patent resolves this contradiction by making the intermediate deck height adjustable rather than fixed. When the intermediate deck is positioned lower, the car provides maximum protection against pilferage and damage while maintaining a lower overall height that fits within standard clearance envelopes. The movable deck allows the car to be enclosed with roof and end doors while still accommodating different vehicle heights by repositioning the intermediate deck, thus protecting vehicles without being constrained by clearance restrictions.
3Quantity of substance
If the intermediate deck is positioned to provide maximum vertical clearance for tri-level configuration, then the number of vehicles that can be carried is increased, but the vertical clearance for bi-level configuration is reduced
Solution Approach 1:
The patent resolves this contradiction by making the intermediate deck height adjustable along the side posts. When carrying three levels of vehicles, the intermediate deck is positioned to maximize vertical clearance between decks, allowing adequate space for vehicles on each level. When carrying two levels of vehicles, the intermediate deck can be repositioned to provide maximum vertical clearance between the bottom and top decks. This dynamic adjustment capability allows the same railroad car to optimize vertical clearance for different configuration needs, resolving the contradiction between carrying maximum vehicles and providing adequate clearance.
4Strength
If the decks are designed with camber to maximize structural integrity, then the strength of the decks is improved, but the vertical dimension of the decks increases
Solution Approach 1:
The patent applies the local quality principle by providing structural support at critical locations rather than uniformly throughout the entire deck. The side posts are positioned at strategic locations along the decks to provide necessary structural support and integrity. This localized support system allows the decks to maintain adequate strength while minimizing their vertical dimension, as the support is concentrated where most needed rather than distributed uniformly, thus resolving the contradiction between structural integrity and minimizing vertical dimension.
Data Source
AI summary
A fully protective railroad freight car for carrying motor vehicles in a selected one of a bi-level or a tri-level configuration, with the lowest level including a depressed longitudinally central portion between body bolsters of the underbody, which may be a low-level flat car. A pair of vehicle-carrying decks are adjustable in height to provide for either one or two vehicle-carrying levels above the lowest level, while also providing at least a prescribed amount of vertical clearance above each vehicle-carrying deck. Ramps may be provided on the lowest level at an end of the car to provide a wheel-supporting surface having a prescribed minimum height. A roof structure is light in weight, and the car has an overall height not exceeding a prescribed limit for operation on most rail lines. The ends of the car are equipped with three-panel folding doors.