Extendable Needle Davit Assembly with Fixed Beam and Telescopic Reach
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Solution Overview
Problem
Existing davit systems compromise load-bearing capacity and require complex repositioning for length adjustment, making them unsuitable for elevated rope access on non-load bearing structures like parapets and lightweight curtain walls.
Innovation Solution
An extendable needle davit assembly with a fixed beam portion and telescopic beam portion, featuring a non-telescopic main load-bearing fixed beam and a modular design, allowing for quick assembly and adjustable length without compromising structural integrity, and equipped with a swivel anchor for easy repositioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the beam is made telescopic to allow length adjustment, then the adaptability is improved, but the load-bearing capacity deteriorates
Solution Approach 1:
The beam is divided into two distinct segments: a fixed beam portion that maintains structural integrity and load-bearing capacity, and a telescopic beam portion that provides length adjustability. This segmentation allows the system to achieve adaptability without compromising the strength of the main load-bearing structure.
Solution Approach 2:
The telescopic beam portion incorporates movable elements that allow dynamic adjustment of the beam length. The telescopic mechanism enables the beam to adapt to different working conditions while the fixed portion remains static to ensure structural stability and load-bearing performance.
2Ease of operation
If the beam is made telescopic to allow length adjustment, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
By separating the telescopic functionality into a distinct portion rather than making the entire beam telescopic, the complexity is localized to only the necessary components. The fixed beam portion remains simple and straightforward, while the telescopic portion handles the adjustment functionality.
3Adaptability or versatility
If the main beam is made telescopic for length adjustment, then the adaptability is improved, but the structural integrity deteriorates
Solution Approach 1:
The critical load-bearing section of the beam is maintained as a fixed, non-telescopic portion to ensure structural integrity and stability. The telescopic portion is positioned such that it does not compromise the structural continuity of the main beam, allowing length adjustment while preserving the stability of the object's composition.
Data Source
AI summary
An extendable needle davit assembly has an extendable beam comprising a fixed beam portion, and a telescopic beam portion slidably receivable within a distal end of the fixed beam portion. An intermediate lateral bracing frame holds the extendable beam at an angle. The fixed beam portion is a single-piece construction, and a proximal end of the fixed beam portion is anchored. An upper end of the bracing frame is attached to a distal attachment point of the fixed beam portion, such that a distal portion of the fixed beam portion extends beyond the bracing frame. A lower portion of the bracing frame is attached to a proximal attachment point of the fixed beam portion by means of a rear brace.