Multi-Loop Ropeway Vehicle Transfer for Nonstop Intermediate Routing
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Solution Overview
Problem
Conventional ropeway systems for urban transport face inefficiencies due to vehicles being forced to stop at all intermediate stations, resulting in long station lengths and reduced line capacity, as well as the need for large headways between vehicles to prevent collisions.
Innovation Solution
A ropeway system with multiple cable loops, including a direct loop between end stations and local loops through intermediate stations, allows vehicles to switch between loops using independent gripping mechanisms, enabling continuous travel without stopping at intermediate stations and facilitating turns and efficient routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If vehicles are forced to stop at all intermediate stations, then passenger boarding and alighting is enabled, but system efficiency and line capacity are reduced
Solution Approach 1:
The cable system is segmented into multiple independent loops (first loop for direct travel, second loop for intermediate stops). Vehicles are segmented into those that continue on the direct loop and those that transfer to the intermediate loop at interchange points. This allows the system to serve intermediate stations without forcing all vehicles to stop, thereby maintaining high line capacity while enabling passenger boarding and alighting at intermediate locations.
Solution Approach 2:
Interchange points act as intermediaries where vehicles can transfer between the direct loop and the intermediate loop. These interchange points enable the system to accommodate intermediate station requirements without disrupting the main direct route, thus preserving system efficiency while providing ease of operation for passengers needing to board or alight at intermediate locations.
2Ease of operation
If vehicles decelerate to crawling speed at stations and then accelerate back to line speed, then passenger boarding and alighting is enabled, but station length increases and system efficiency decreases
Solution Approach 1:
The system segments the station function into two separate locations: the main end station where full deceleration to crawling speed occurs for passenger boarding and alighting, and intermediate stations where vehicles simply transfer loops without stopping. This segmentation allows the main station to be optimized for passenger operations while intermediate stations remain compact, thereby reducing overall station length while maintaining ease of operation.
Solution Approach 2:
The deceleration and acceleration processes are extracted from intermediate stations and consolidated at the main end station. Vehicles maintain line speed through intermediate locations by simply changing loops, eliminating the need for repeated deceleration and acceleration cycles. This extraction of the heavy operational burden from intermediate points reduces station length requirements while preserving passenger boarding and alighting capabilities at the main station.
3Reliability
If large headways between vehicles are maintained to prevent collisions, then safety is improved, but line capacity is reduced
Solution Approach 1:
The system segments the vehicle flow into multiple independent loops, allowing vehicles to be densely packed on the direct loop while maintaining safe separation on the intermediate loop. Vehicles that do not stop at intermediate stations continue on the direct loop without needing large headways, as they do not perform stopping operations. This segmentation enables higher line capacity while maintaining safety through spatial separation of vehicle streams.
Solution Approach 2:
The system dynamically routes vehicles onto different loops based on their destination and stopping requirements. Vehicles bound for intermediate locations transfer to the intermediate loop, while through-traffic remains on the direct loop. This dynamic routing optimizes headway requirements by separating vehicles that need large safety margins (those stopping at intermediate points) from those that can maintain smaller headways (through-traffic), thereby increasing overall line capacity while preserving safety.
Data Source
AI summary
A ropeway or cable system is disclosed having at least two cable loops (1,20) that form a track, a first loop extending directly between two end station embarking or disembarking stations of the track, and a second loop extending between the two end stations via intermediate embarking or disembarking stations) or turning towers on the track. A vehicle (2) is carried from a loop, the vehicle (2) having a cable gripping mechanism (37, 38, 43, 44), the cable gripping mechanism being capable of switching attachment of the vehicle between two or more cable loops (1,20), so as to change the loop that carries the vehicle (2).