Wall-Mountable Perch With Tension Arms for Scaffold-Free Window Work
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Solution Overview
Problem
Erecting scaffolding for exterior building work near windows is time-consuming, expensive, and may require permits, while some window frames are not suitable for scaffolding due to space constraints.
Innovation Solution
A wall-mountable perch with a flexible frame that can be inserted through a window opening, featuring adjustable support arms and tension arms to secure to the wall without penetrating it, providing a stable platform for workers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scaffolding is erected to provide a platform for exterior building work, then a stable work platform is provided, but the process is time-consuming and expensive
Solution Approach 1:
The perch is divided into separate components including a frame, platform, support arms, and tension arms that can be independently assembled. The frame can be inserted through the window opening first, followed by attachment of the platform and securing mechanisms, allowing for quick assembly without requiring complex scaffolding erection procedures
Solution Approach 2:
The frame is designed to be pre-assembled and ready for insertion through the window opening. The support arms and tension arms are pre-configured to engage with the frame and wall, allowing the entire perch to be quickly positioned and secured without time-consuming on-site assembly operations
2Reliability
If scaffolding is erected to provide a platform for exterior building work, then a stable work platform is provided, but permits and supervision are required
Solution Approach 1:
The perch extracts the essential function of providing a stable platform while eliminating the need for complex scaffolding structures that require permits and supervision. By using a simple frame inserted through the window opening with tension arms that secure to the wall, the design achieves platform stability without triggering regulatory requirements
3Reliability
If scaffolding is erected near a window frame, then a work platform is provided, but pedestrian and motor vehicle access is impeded
Solution Approach 1:
The perch frame is designed to nest within or alongside the window opening, with the platform positioned to not obstruct external access paths. The support arms extend upward from the frame without requiring additional structural elements that would block pedestrian or vehicle access
4Reliability
If traditional scaffolding is used, then a work platform is provided, but the cost is high
Solution Approach 1:
The perch uses simple, inexpensive materials such as metal tubing for the frame, standard fasteners for assembly, and basic tensioning mechanisms. These components are designed to be affordable and easily replaceable, eliminating the need for expensive scaffolding equipment while providing sufficient stability for the intended application
5Reliability
If the perch is secured to the wall by penetrating it, then a secure mounting is achieved, but the building is damaged
Solution Approach 1:
The tension arms serve as intermediaries that transfer the mounting force from the perch frame to the wall without requiring direct penetration. The tension arms engage with the wall through contact points that distribute force across a larger area, securing the perch to the wall while preventing concentrated stress that would cause damage
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 perch offers a stable, secure, and efficient work platform that can be mounted by a single person without damaging the building, eliminating the need for scaffolding and its associated costs and permits.
Implementation Method 1
each support arm of the plurality of support arms extending vertically upward from the frame and being configured to be flexible to bend along a respective length of each of the plurality of support arms
Data Source
AI summary
A wall-mountable perch includes: a frame including: first horizontal side members; a first cross member connected to each of the first horizontal side members proximate to a respective distal end of each of the first horizontal side members; second horizontal side members connected to the first horizontal side members; a platform connected to the second horizontal side members; a plurality of support arms each having a proximal end connected proximate to a proximal end of the frame, each support arm extending vertically upward from the frame; tension arms each connected to a respective horizontal side member; and adjusting means for producing tension in the tension arms and for causing a second cross member of the wall-mountable perch to move closer to the platform.