Nested Dual Traction Cables for Cable Transport Redundancy
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Solution Overview
Problem
Current aerial cable transport installations face low throughput and redundancy issues, as they require waiting for the return of a cable car to board passengers again, and have limited flexibility in case of breakdowns or maintenance.
Innovation Solution
A cable transport installation with two independent traction cables forming closed loops, where the second loop surrounds the first, creating a separation space, allowing for redundancy and reduced congestion, with disengageable attachments and independent drive systems for each cable, enabling continuous passenger transport even when one cable is stopped for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single cable car system is used, then the installation has simple structure, but the passenger transport capacity is low and stops when the cable car returns
Solution Approach 1:
The system is divided into two independent cable car systems operating in parallel, each with its own traction cable and drive mechanism. This segmentation allows one system to operate while the other undergoes maintenance or handles different passenger flows, thereby increasing overall transport capacity without requiring a completely complex integrated system
Solution Approach 2:
The second traction cable is arranged to surround the first traction cable, creating a nested configuration where the cables are concentric. This nesting allows both cable systems to share the same vertical space and station infrastructure, reducing the lateral footprint while maintaining independent operation of each cable car system
2Reliability
If two parallel cable cars are used, then redundancy is provided, but the lateral space required is large
Solution Approach 1:
The second traction cable is arranged to surround the first traction cable in a concentric configuration. This nesting allows both cable systems to share the same vertical space and station infrastructure, reducing the lateral footprint while maintaining independent operation of each cable car system
Solution Approach 2:
The system transitions from a lateral arrangement of parallel cables to a vertical/concentric arrangement where the second cable surrounds the first. This dimensional change allows both systems to occupy the same horizontal space by utilizing vertical and radial dimensions, thereby reducing the lateral area required while maintaining redundancy
3Area of stationary object
If the second traction cable surrounds the first, then lateral space is reduced, but the drive mechanism positioning becomes complex
Solution Approach 1:
The drive mechanisms are segmented and positioned at different locations: the first drive pulley is positioned outside the first closed loop while the second drive pulley is positioned inside the second closed loop. This segmentation allows each drive mechanism to be independently positioned and maintained without interfering with the other, simplifying the overall positioning complexity despite the nested cable arrangement
Solution Approach 2:
Deflection pulleys are introduced as intermediary elements to redirect the traction cables from their nested paths to the drive pulleys. These deflection pulleys act as mediators that simplify the connection between the nested cable loops and the drive mechanisms, making the drive system more manageable and easier to position
Data Source
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AI summary
The invention relates to a cable transport facility, comprising: 5 at least one vehicle (4 to 10), a first traction cable (2) for towing a vehicle (4 to 10) and describing a first closed loop, and a second traction cable (3) for towing a vehicle (4 to 10) and describing a second closed loop, 10 the second loop surrounding the first loop so as to create a separation space (11) between the first and second traction cables (2, 3).