Movable Roller Support for Aerial Hauling Cable Oscillation Control
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Solution Overview
Problem
Aerial cable transportation systems experience vertical oscillations of the hauling cable due to cyclical lifting and lowering, which cause annoying vibrations for passengers, especially when approaching fixed support structures like pylons.
Innovation Solution
The introduction of a movable roller in the aerial line support device that transitions between a distal and proximal position relative to the supporting cables, dampened by a spring and damping mechanism, to accommodate the hauling cable's movement and reduce oscillations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the hauling cable is tensioned between stations to maintain position, then the cable stability is improved, but the mechanical effort needed to lift the cable over support structures increases
Solution Approach 1:
The aerial line support device incorporates a movable roller that can dynamically adjust its position between a first position (supporting the cable) and a second position (clearing the cable path). This dynamic mechanism allows the system to reduce lifting effort during vehicle passage while maintaining cable stability during normal operation.
Solution Approach 2:
The spring element pre-positions the roller in the first position to support the hauling cable before vehicle arrival. This preliminary action ensures the cable is properly supported in advance, reducing the mechanical effort required during the actual lifting phase when the vehicle clamp passes.
2Force
If the hauling cable is allowed to deflect downward between support structures, then the mechanical effort for lifting is reduced, but the cable position becomes excessively deviated and proximity to ground increases
Solution Approach 1:
The movable roller transitions between a first position (supporting the cable at proper height) and a second position (allowing cable to deflect downward). This dynamic adjustment allows the system to temporarily reduce support during vehicle passage while maintaining proper cable position during normal operation.
Solution Approach 2:
The aerial line support device operates periodically, providing support to the hauling cable during intervals between vehicle passages and clearing the path during vehicle passage. This periodic action pattern allows the cable to deflect downward only when necessary, maintaining stability overall while reducing lifting effort during critical moments.
3Stability of the object's composition
If a fixed roller support is used for the hauling cable, then the cable position is maintained, but vertical oscillations occur during vehicle passage
Solution Approach 1:
The roller is made movable rather than fixed, allowing it to dynamically respond to vehicle passage. The roller can be raised to clear the cable path during vehicle passage, preventing the cable from being forced over a fixed obstacle and thus eliminating the harmful vertical oscillations and vibrations that would occur with a fixed roller support.
4Stability of the object's composition
If the roller is positioned in the path of the supporting cables, then the hauling cable is supported, but the vehicle clamp cannot pass through due to insufficient space
Solution Approach 1:
The roller is positioned in the path of the supporting cables but is made movable between two positions. During normal operation, the roller supports the hauling cable in the first position. During vehicle passage, the roller moves to a second position that clears the path, providing sufficient space for the vehicle clamp to pass through without obstruction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively dampens vertical oscillations of the hauling cable, reducing passenger discomfort and maintaining a stable cable position without complex mechanisms.
Implementation Method 1
a spring element configured to move the support roller from a first position in which the support roller supports the hauling cable to a second position in which the support roller clears a path for the hauling cable
Implementation Method 2
a damping element configured to damp movements of the support roller between the first position and the second position
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
An aerial cable transportation system for transporting passengers and/or cargo; wherein the system comprises: a first terminal station and a second terminal station; a hauling cable movable and arranged in a loop between the terminal stations to form two branches of opposite transport direction; two supporting cables for each transport branch between the stations, the hauling cable being placed under the supporting cables; a plurality of vehicles for transporting passengers and/or cargo configured to run along the transport branches in aerial configuration between the terminal stations supported by the supporting cables and hauled by the hauling cable to which they are coupled by means of a clamp; at least one aerial line support device coupled to the supporting cables between the stations; wherein the aerial line support device comprises a frame having upper ends configured to couple to the hauling cables and a lower end supporting a roller configured to support the hauling cable; wherein the roller of the aerial line support device is movable relative to the first upper ends of the frame between a distal or lowered position and a proximal or raised position; being provided at least one spring configured to force the roller towards the proximal or raised position.