Cable Switch Movable Rail Articulation
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Solution Overview
Problem
Existing cable transportation system switches are either excessively heavy and slow to change route due to large moving parts or have significant mass and lateral projection issues, limiting their efficiency and stability.
Innovation Solution
A cable transportation system with a switch comprising two movable rails that perform rotation-translation movements, supported by an articulated mechanism with cranks and a fixed structure, allowing for stable and economical operation with minimal mass displacement, enabling both straight and curved rail configurations without lateral projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a switch with curved parallel rails and a pivot is used, then the switch can connect different track branches, but the moving part becomes extremely heavy and route changing takes a long time
Solution Approach 1:
The switch is divided into multiple independent movable rails (first movable rail and second movable rail) that can be actuated separately or in coordination, rather than using a single large moving component. This segmentation reduces the weight of each individual moving part while maintaining the overall switching functionality.
Solution Approach 2:
The switch uses movable rails that can dynamically change position between different track branches through controlled movement along guides. The rails transition between engaged and disengaged states with the curved parallel rails, enabling flexible route changing without requiring extremely heavy stationary components.
2Shape
If a switch with four movable rails is used, then curved rails are allowed, but the mass to be moved becomes considerable and the switch projects laterally with respect to the track
Solution Approach 1:
Instead of using four movable rails, the invention segments the switching function into two movable rails that work in coordination. This reduction in the number of movable components directly decreases the total mass to be moved while still achieving curved rail configuration through the articulated mechanism.
Solution Approach 2:
The movable rails are constrained to move within a vertical plane rather than projecting laterally. The guides restrict movement to vertical and longitudinal directions, eliminating lateral projection while maintaining curved rail capability through the articulation mechanism.
3Stability of the object's composition
If movable rails are supported to prevent further movement out of work positions, then naturally stable work positions are established, but additional support structures are required
Solution Approach 1:
The movable rails are designed to be self-stabilizing through their interaction with the fixed rails and guides. The geometric configuration of the articulated mechanism and the engagement with curved parallel rails create natural stable positions without requiring complex active locking mechanisms or additional support structures.
Solution Approach 2:
The guides and support structures are designed to provide cushioning and damping during the movement of rails into their work positions. This beforehand cushioning ensures smooth deceleration and stable positioning as the rails engage with the curved parallel rails, preventing overshoot and vibration.
Data Source
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AI summary
A cable transportation system for moving transportation units along a given track has a plurality of fixed rails (4, 5, 6, 7) in a given plane (P); and a switch (8) located between the fixed rails (4, 5, 6, 7) and having a plurality of movable rails (15, 16) designed to assume respective work positions, in which the movable rails (15, 16) lie along the given plane (P), and respective rest positions, in which the movable rails (15, 16) are located beneath the given plane (P).