Removable Davit Base for Roof Parapet Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional davit constructions pose a safety hazard and obstacle due to the elevated spigot, which can be inconvenient and unsafe, especially in pedestrian areas, as they are not easily demountable and can cause tripping hazards.
Innovation Solution
A davit base assembly with a removable base sub-assembly that uses securement means for linear sliding movement to engage or disengage from a mounting plate sub-assembly, combined with a roller bearing arrangement for mast rotation, allowing for safe and easy installation and removal, and a locking mechanism to prevent accidental disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional davit base arrangement with an elevated spigot is used, then the mast can be securely mounted and rotated, but it creates a tripping hazard and safety obstacle in pedestrian areas
Solution Approach 1:
The davit base assembly is divided into separate components: a mounting plate sub-assembly that anchors to the roof and a removable base sub-assembly that can be detached. This segmentation allows the hazardous elevated spigot to be removed while retaining the secure mounting capability through the separate mounting plate.
Solution Approach 2:
The removable base sub-assembly containing the spigot is extracted from the permanent mounting structure. This allows the spigot to be removed when not in use, eliminating the tripping hazard while the mounting plate remains anchored to provide secure reinstallation capability.
2Reliability
If a permanently anchored spigot is used, then the mast mounting is secure, but the structure cannot be easily removed or reconfigured
Solution Approach 1:
The davit base assembly is divided into a permanent mounting plate sub-assembly and a removable base sub-assembly. The mounting plate provides secure anchoring to the roof structure, while the removable base can be detached and reinstalled as needed, providing both security and adaptability.
Solution Approach 2:
The system transitions from a static permanent mounting to a dynamic configuration where the base sub-assembly can be removed and reinstalled. The sliding securement means enables easy transition between mounted and removed states, providing operational flexibility.
3Ease of operation
If a removable base sub-assembly with sliding securement means is used, then the davit can be easily installed and removed, but the securement mechanism must be sufficiently complex to prevent accidental disengagement
Solution Approach 1:
The securement mechanism is segmented into multiple independent securement elements that work together. This allows each element to be simple in itself while the combination provides robust securement that prevents accidental disengagement during normal operation.
Solution Approach 2:
The sliding securement means acts as an intermediary mechanism between the removable base and mounting plate. It provides a controlled interface that requires deliberate action to disengage, preventing accidental removal while maintaining ease of intentional installation and removal.
4Ease of operation
If the removable base sub-assembly is designed for linear sliding movement, then engagement and disengagement are simplified, but the securement means must provide sufficient resistance to rotational forces during mast operation
Solution Approach 1:
The securement means is divided into multiple securement elements distributed around the interface between the removable base and mounting plate. Each element handles a portion of the rotational load, allowing simple linear sliding engagement while collectively providing sufficient resistance to operational forces.
Solution Approach 2:
The securement mechanism transitions from purely linear sliding movement to a combination of linear sliding and rotational resistance. The securement elements are designed to accommodate linear engagement while developing friction and mechanical interference to resist rotational forces during mast operation.
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 ensures the davit base is safely and easily installed and removed, reducing tripping hazards and allowing for secure and stable mast rotation, enhancing safety and usability in pedestrian areas.
Implementation Method 1
a roller bearing arrangement configured for contact with a sleeve of the removable base sub-assembly during rotation of the mast and the associated mast base assembly about the davit base assembly
Data Source
AI summary
A davit used for abseiling purposes and adapted to anchor to a parapet roof includes a davit base assembly and a mast base assembly associated with a mast and configured to rotation about the davit base assembly. The davit base assembly includes a mounting plate sub-assembly adapted to anchor to the roof, and a removable base sub-assembly configured to cooperate with the mounting plate sub-assembly. The mast base assembly includes a roller bearing arrangement configured for contact with a sleeve of the removable base sub-assembly during rotation of the mast and the associated mast base assembly about the davit base assembly.