Extendable Railcar Bridge for Self-Transloading Cargo Containers
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Solution Overview
Problem
Freight trains are dependent on the availability of transloading equipment, leading to delays and inefficiencies, as they must travel to facilities with available equipment and often carry empty railcars, reducing energy efficiency and increasing weight and length, which affects acceleration and braking capabilities.
Innovation Solution
A vehicle system with self-transloading capabilities, where vehicles are connected via couplers and equipped with extendable bridge members and actuators, allowing cargo containers to be transferred between vehicles without external equipment, enabling flexible container rearrangement and reduction of empty vehicles, thus optimizing weight distribution and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If freight trains use traditional transloading equipment at terminal facilities, then cargo containers can be transferred between railcars, but the train must travel to specific facilities and wait for equipment availability, causing delays and reducing productivity
Solution Approach 1:
The railcar is equipped with self-transloading capabilities through an extendable platform that can autonomously transfer cargo containers to adjacent railcars without requiring external terminal facilities or transloading equipment. This self-service mechanism eliminates the need to travel to specific facilities and wait for equipment availability, thereby resolving the contradiction between cargo transfer efficiency and time loss.
Solution Approach 2:
The platform is designed to be dynamically extendable and retractable. During normal travel, the platform remains retracted to maintain a compact train configuration. When cargo transfer is needed, the platform extends to bridge the gap between adjacent railcars, enabling on-the-fly transloading operations without disrupting the overall train schedule.
2Use of energy by moving object
If empty railcars are removed from the train, then weight and length are reduced improving energy efficiency, but the train must be broken down into segments to access and uncouple the empty railcars
Solution Approach 1:
The self-transloading railcar can autonomously transfer its cargo to an adjacent railcar and then be uncoupled from the train without requiring the train to be broken down into segments. The extendable platform enables the cargo transfer while the railcar remains connected to the train, simplifying the decoupling process and maintaining train integrity while improving energy efficiency.
Solution Approach 2:
The train is conceptually segmented into functional units where the self-transloading railcar operates as an independent module. This modular approach allows the railcar to perform cargo transfer operations autonomously and be decoupled individually without disrupting the rest of the train configuration, thereby reducing complexity while improving energy efficiency.
3Adaptability or versatility
If the platform is extended to enable cargo transloading between vehicles, then cargo can be transferred without external equipment, but the vehicle length increases affecting train handling
Solution Approach 1:
The platform is designed as a dynamic structure that can extend and retract as needed. During normal travel, the platform remains retracted to maintain a compact vehicle length for optimal handling. When cargo transloading is required, the platform extends to bridge the gap between adjacent vehicles, providing adaptability without permanently increasing vehicle length.
Solution Approach 2:
The extendable platform is nested within the vehicle structure when not in use, similar to a nested doll configuration. This allows the platform to be stored compactly within the vehicle body, minimizing the impact on vehicle length during travel while still providing the capability to extend for cargo transfer operations when needed.
Data Source
AI summary
A vehicle according to a vehicle system and method includes a chassis, a coupler, and a platform on the chassis. The coupler is mounted to the chassis at a first end of the chassis and is configured to releasably connect the vehicle to a second vehicle. The platform is for supporting a cargo container and includes a base portion and a bridge member. The bridge member is located at an end of the platform and is extendable relative to the base portion from a retracted position to an extended position to lengthen the platform. The bridge member in the extended position projects beyond the first end of the chassis, above the coupler, towards the second vehicle for establishing a bridge to transload the cargo container from the platform to the second vehicle.