Mine Escape Trolley with Directional Protrusion Mechanism
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Solution Overview
Problem
Current escape line systems in mines are inefficient for quick and safe egress during emergencies, as they require miners to grasp and release the rope, leading to slowed and dangerous exits in dark, injured conditions with limited visibility.
Innovation Solution
An overhead rail guidance and signaling system with a trolley that allows continuous connection to the rail, featuring protrusions for directional control, audible and tactile feedback, and integrated oxygen supply, ensuring safe and organized egress with visual and auditory indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If miners use hand-grasping escape lines with suspension points and reflectors, then the system provides visual and tactile reference points for direction, but the escape process is slowed and made more dangerous due to repeated hand removal and re-grasping
Solution Approach 1:
The trolley maintains continuous contact with the rail throughout the escape journey, eliminating the need to release and re-grasp at suspension points. The protrusion engaging member continuously engages with protrusions on the rail, providing uninterrupted directional guidance and movement from start to finish.
Solution Approach 2:
The protrusion engaging member acts as an intermediary mechanism between the trolley and the rail. It translates the rail's protrusions into directional control signals, allowing the trolley to automatically follow the rail's path without manual intervention at each suspension point.
2Reliability
If the protrusion engaging member is biased to the second position by a biasing member, then the trolley can be moved past the protrusion in the egress direction only by default, but additional components are required to enable bidirectional movement when needed
Solution Approach 1:
The biasing member automatically pushes the protrusion engaging member to the second position (egress direction only) without requiring active control. The system self-regulates the default state based on the emergency egress requirement, eliminating the need for complex control mechanisms.
Solution Approach 2:
The protrusion engaging member transitions from a static position to a dynamic one that can shift between first and second positions. This dynamic capability allows the system to adapt between default egress-only mode and bidirectional mode when rescue personnel need to enter the mine.
Data Source
AI summary
An overhead railway and trolley for transporting miners out of a mine. The railway is formed by connected rails that are mounted to a roof of a mine. The trolley is mounted to a bottom flange of the rails and includes wheel assemblies having at least two wheels mounted side-by-side, and each is configured to engage and roll along a top surface of the bottom flange. The trolley has a clicker that is configured to engage protrusions extending away from the bottom flange. The clicker permits the trolley to travel out of the mine but prevents it from traveling into the mine. The trolley also includes a pair of handles that are configured to be gripped by a miner standing on a floor of the mine as he travels from the beginning of the railway to the ending (i.e., the egress direction).