Collapsible Elevator Hoistway Protection Deck
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Solution Overview
Problem
Existing overhead protection decks for elevator hoistways are difficult to implement in sites without mounting pockets and are slow and laborious to lift and guide, making them inefficient for construction sites where quick configuration changes are needed.
Innovation Solution
A collapsible protection deck with a roof member and cross member that pivot relative to each other, allowing for swift transition between service and transport states, reducing space consumption and facilitating vertical movement within the hoistway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid overhead protection deck is used to block falling objects and water, then protection reliability is improved, but the time and labor required for installation and repositioning increase significantly
Solution Approach 1:
The protection deck transitions from a static rigid structure to a dynamic collapsible structure. The roof member can pivot between an extended protective position and a collapsed storage position, allowing rapid deployment and repositioning while maintaining protection reliability when deployed.
Solution Approach 2:
The protection deck is divided into modular components including the roof member, cross member, and mounting members that can be independently positioned and assembled. This segmentation enables faster installation and repositioning compared to a monolithic rigid structure.
2Reliability
If a traditional overhead protection deck is installed to protect workers below, then safety protection is improved, but the complexity of mounting and maneuvering the structure increases
Solution Approach 1:
The collapsible roof member provides a simple two-state mechanism (extended/collapsed) that reduces the complexity of mounting and maneuvering. The structure can be quickly positioned without complex assembly procedures while maintaining safety protection when deployed.
Solution Approach 2:
The protection deck utilizes vertical space by collapsing downward into a compact configuration during transport and storage, then extending upward to provide overhead protection. This dimensional transformation simplifies maneuvering through tight hoistway spaces.
3Reliability
If a fixed protection deck is used to block falling objects, then protection effectiveness is improved, but the ability to rapidly reconfigure for different construction stages is reduced
Solution Approach 1:
The protection deck's collapsible roof member enables rapid reconfiguration between protective and storage states, providing adaptability for different construction stages while maintaining protection effectiveness when deployed. The structure can be quickly moved to different locations along the hoistway.
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
Enables safe and efficient protection from falling objects and water while allowing for rapid configuration changes, improving construction time efficiency by reducing the complexity of installation and maintenance.
Implementation Method 1
The cross member and the roof member are pivotal relative to each other around a horizontal axis
Data Source
AI summary
The invention relates to a construction time elevator arrangement comprising a hoistway; a protection deck mounted within the hoistway for protecting the portion of the hoistway below it from falling objects; the protection deck comprising a roof member extending diagonally across the hoistway and covering the hoistway such that it blocks objects and/or water from falling into the hoistway below it; and a cross member extending in horizontal direction across the hoistway below the roof member. The cross member is pivotally connected with the roof member, the protection deck being collapsible into a transport state by pivoting the cross member and the roof member towards each other. The invention relates to a method implementing the construction time elevator arrangement.