Ad-Hoc Train Grouping to Increase Heavy-Haul Capacity Without Long Tracks
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Solution Overview
Problem
The existing methods for marshalling and unmarshalling heavy haul trains face challenges such as high costs due to extended track requirements, inefficiency, safety risks from coupler extrusion and breakage, and the need for extensive land acquisition and personnel, which are not effectively addressed by conventional coupling methods.
Innovation Solution
An ad-hoc network-based system for dynamically marshalling and unmarshalling trains, allowing flexible connection and disconnection without physical couplers, utilizing wireless communication to form and break train groups efficiently, optimizing track usage and reducing safety hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If extended train marshalling is adopted to increase transport volume, then the transport capacity is improved, but the effective track length requirement increases to 5 km or above, requiring expensive land acquisition
Solution Approach 1:
The patent replaces the mechanical coupling system with a wireless communication-based ad-hoc network system. Trains are connected logically through wireless communication rather than physically through couplers, allowing virtual marshalling without requiring extended physical track infrastructure. This substitution enables increased transport volume while maintaining standard track lengths.
Solution Approach 2:
The patent introduces ad-hoc network communication as an intermediary between trains. Instead of direct physical coupling, trains communicate through wireless ad-hoc networks to form virtual train groups, enabling flexible marshalling and unmarshalling operations without the need for extended effective track length.
2Force
If multi-locomotive joint control is adopted to handle heavy haul trains, then the traction capability is improved, but the synchronization requirement increases, leading to higher risk of coupler extrusion and breakage
Solution Approach 1:
The patent replaces mechanical coupler connections with wireless ad-hoc network communication for train group formation. This eliminates the mechanical stress and synchronization issues associated with multi-locomotive joint control, as trains are coordinated through communication rather than rigid mechanical coupling, thereby reducing the risk of coupler extrusion and breakage.
3Quantity of substance
If conventional coupling marshalling is used to increase transport volume, then the transport capacity is improved, but the complexity of marshalling operations increases, requiring more ground personnel and taking about 120 minutes
Solution Approach 1:
The patent replaces manual mechanical marshalling operations with automated wireless communication-based train group formation. Trains can dynamically form and dissolve groups through ad-hoc network communication, eliminating the need for extensive ground personnel and reducing marshalling time from 120 minutes to a much shorter duration.
Solution Approach 2:
The patent enables trains to perform marshalling and unmarshalling operations autonomously through ad-hoc network communication. Trains can self-organize into groups and separate independently without requiring ground personnel intervention,实现ing self-service marshalling that dramatically reduces both time and human resource requirements.
4Quantity of substance
If multi-section vehicle marshalling is adopted to increase transport volume, then the transport capacity is improved, but the station track requirements increase, affecting main line operation
Solution Approach 1:
The patent replaces physical multi-section vehicle marshalling with virtual train group formation through ad-hoc network communication. This allows multiple trains to operate independently on standard station tracks while maintaining the ability to form virtual groups for heavy haul operations, preserving station track adaptability and not interfering with main line operations.
Data Source
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AI summary
Disclosed is an ad-hoc network-based train dynamic marshalling and unmarshalling method. The method includes train dynamic marshalling and train dynamic unmarshalling. The train dynamic marshalling includes: after a rear train set enters a U code section, marshalling two train sets if marshalling conditions are met. The dynamic unmarshalling includes: receiving, by two train sets in a group, an unmarshalling command during operation, and unmarshalling the two train sets if unmarshalling conditions are met. The method further includes: when the rear train set has a speed of 0 during operation of the two train sets in the group, unmarshalling the two train sets if the unmarshalling command is received. The method designed in the present invention implements flexible connection by means of an ad-hoc network, such that group trains can be flexibly marshalled, and a plurality of tracks are fully utilized. During departure, a mode of marshalling first and then departing is used to improve the departure efficiency. When the train transport volume is increased, a 5,000 t standard train may be used, thereby avoiding high costs caused by adding effective tracks. Further disclosed is a dynamic marshalling and unmarshalling system.