Pivotable Stop Mechanism for Trolley Rail Transfer Safety
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Solution Overview
Problem
In overhead hoisting systems, there is a safety risk of the trolley inadvertently passing beyond the free end of a rail that is not aligned with another, leading to potential injury and material damage, and existing solutions lack reliability and require manual intervention or have complex mechanisms.
Innovation Solution
An arrangement with curving engagement means and tracks that automatically pivot stops out of the trolley's path when rails are aligned, using elastic mechanisms for redundancy and ensuring the system remains secure even if one component fails, allowing the trolley to move between rails without manual operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a physical barrier is inserted in the path of the trolley near the free end of the rail to prevent passage beyond the free end, then safety is improved, but device complexity increases and manual intervention is required
Solution Approach 1:
The stop is coupled to the engagement means such that it automatically pivots out of the path of the trolley when the engagement means engage, eliminating the need for manual intervention while maintaining the safety barrier function
Solution Approach 2:
The stop is made pivotable in relation to the rail, transitioning from a static barrier to a dynamic element that automatically adjusts its position based on the alignment status of the rails, reducing complexity while maintaining safety
2Reliability
If a physical barrier is inserted to prevent trolley passage beyond the free end of the rail, then safety is improved, but ease of operation deteriorates due to manual intervention requirements
Solution Approach 1:
The system performs the safety function automatically through the coupling between the stop and engagement means, eliminating manual operation requirements while maintaining the barrier function
3Device complexity
If existing solutions use simple barrier mechanisms, then device complexity is reduced, but reliability deteriorates due to lack of automatic operation and manual intervention requirements
Solution Approach 1:
The stop automatically pivots based on the engagement status of the engagement means, providing reliable automatic operation without requiring complex control systems or manual intervention
Solution Approach 2:
The pivotable stop provides dynamic adaptation to rail alignment status, automatically providing the safety barrier when needed while maintaining simplicity in the overall mechanism
4Reliability
If the stop remains in the path of the trolley when rails are aligned, then safety is improved, but productivity deteriorates due to blocked transfer path
Solution Approach 1:
The stop pivots dynamically between two positions: blocking the trolley path when rails are misaligned (safety function) and moving out of the path when rails are aligned (enabling transfer function), thus resolving the contradiction between safety and productivity
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 provides a reliable, automatic, and safe transfer of the trolley between rails by ensuring the stops are only engaged when the rails are aligned, preventing accidental passage beyond the free end and maintaining functionality even if one component fails, thus enhancing safety and simplicity.
Implementation Method 1
the first stop arranged so as to pivot in relation to the first rail
Implementation Method 2
the second stop arranged so as to pivot in relation to the second rail
Data Source
AI summary
An arrangement for secure transfer of a travelling trolley between a first and a second rail in a hoisting system is provided. The arrangement including: a first and a second engagement devices are arranged to engage when the rails are aligned; a third and a fourth engagement devices are arranged to engage when the rails are aligned; a pivotable stop which in a closed position is arranged to form a barrier in the path of the trolley, and which is coupled with the first engagement device such that the first stop is pivoted out of the path of the trolley when the first and the second engagement devices engage, such that the trolley can pass between the rails; a pivotable second stop which in a closed position is coupled with the third engagement device.