Cable Transport Switch Segmented Rail Design

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Solution Overview

Problem

Existing cable transportation system switches are cumbersome due to large and heavy moving parts, which results in slow switching times as the pivot needs to travel a long distance to connect different track branches.

Innovation Solution

A cable transportation system switch featuring a compact, lightweight design with a movable straight rail that rotates between two operating positions, supported by a structure and actuated by a device, allowing for quick switching between track branches without interfering with hauling cables or clamps.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional switch with a large pivot is used to connect different track branches, then the switch can reliably connect the tracks, but the moving part becomes heavy and requires considerable switching time

Engineering Contradiction:
Improvetrack connection reliabilityVSAvoidswitching time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The switch is segmented into multiple straight rail portions (first, second, third, fourth, fifth, and sixth straight rail portions) that can be independently positioned. Instead of moving a large pivot, the system uses multiple smaller rail segments that can be selectively connected to achieve the same track branching function, thereby reducing the mass and switching time while maintaining reliability

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If a large pivot is used to switch between track branches, then the switch can connect different directions, but the moving part size and weight increase significantly

Engineering Contradiction:
Improvetrack branching capabilityVSAvoidswitch moving part weight
Core Design Contradiction:
Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The switch structure is divided into multiple straight rail portions that can be independently positioned and connected. This segmentation replaces the need for a large, heavy pivot while maintaining the ability to connect different track branches, thereby reducing the weight of moving parts while preserving adaptability

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of having a large pivot move to connect different track branches, the invention inverts the approach by using multiple fixed straight rail portions that can be selectively engaged. The switching action is distributed across multiple smaller components rather than concentrated in one large moving pivot, reducing overall moving weight

Inventive Principle:
Principle #13The other way round (Inversion)

3Adaptability or versatility

If a large pivot travels a long distance to switch rails, then all track branches can be connected, but the switching operation becomes complex and time-consuming

Engineering Contradiction:
Improvetrack branch connectivityVSAvoidswitching mechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The switching mechanism is segmented into multiple straight rail portions that can be independently positioned. This segmentation simplifies the switching operation by breaking down the complex motion of a large pivot into simpler, more manageable movements of individual rail segments, thereby reducing device complexity while maintaining full track branch connectivity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The switch employs dynamic positioning of multiple straight rail portions rather than a single large pivot. Each rail portion can be independently positioned to create the desired track connection, allowing for more flexible and simpler switching operations that adapt to different routing requirements without requiring complex mechanical mechanisms

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP2407366B2Cable transportation system switch and cable transportation system comprising such a switch
Publication Date: 2020.03.18 LEITNER SPA VIPITENO
  • EP2407366B2 patent drawingFigure 1~2
  • EP2407366B2 patent drawingFigure 3
  • EP2407366B2 patent drawingFigure 4

AI summary

A cable transportation system switch (9) having a first straight rail (20); a second straight rail (23) forming an angle of more than 0° and less than 45° with the first straight rail (20); and a third straight rail (27) located between the first and second straight rail (20, 23) and movable selectively between a first operating position, in which it contacts the first straight rail (20) and is parallel to the second straight rail (23), and a second operating position, in which it contacts the second straight rail (23) and is parallel to the first straight rail (20).