Adjustable Suspension Assembly for Scaffolding Height Control
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Solution Overview
Problem
Existing suspension assemblies, such as slings used in scaffolding, require lengthy and cumbersome adjustments, leading to cable kinking and making them unsuitable for reuse.
Innovation Solution
An adjustable suspension assembly is developed, incorporating an adjustment device with spaced planar plates and a scaffold pin system that allows incremental height adjustments without kinking the cable, enabling easy installation and reusability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If clamps are used to adjust sling length in the field, then length adjustability is achieved, but the adjustment process takes a long time and creates kinks in the cable
Solution Approach 1:
The sling is divided into multiple segments of fixed length that can be selectively connected or disconnected. Each segment is a discrete portion of cable with specific length, allowing the overall sling length to be adjusted by changing which segments are connected together, eliminating the need for time-consuming field adjustments
Solution Approach 2:
The sling transitions from a static fixed-length design to a dynamic adjustable-length design. The sling can be configured in different lengths by connecting or disconnecting segments at various positions along the cable, enabling adaptability to different suspension heights without permanent modification
2Adaptability or versatility
If clamps are tightened to adjust sling length, then length adjustability is achieved, but cable kinking occurs making reuse unsatisfactory
Solution Approach 1:
The cable is segmented into discrete portions that can be connected or disconnected without applying compressive forces. The segments are joined through connection means that allow easy assembly and disassembly without tightening operations, preventing cable kinking and preserving cable integrity for repeated use
Solution Approach 2:
The connection means between segments are designed as disposable or replaceable components that can be easily replaced if damaged. This allows the main cable to be preserved and reused while the connection components can be replaced, eliminating the need to discard the entire sling due to cable kinking
3Strength
If a permanent swaged connection is used at one end of the cable, then strong connection is achieved, but length adjustability is limited
Solution Approach 1:
The cable is divided into multiple segments that can be selectively connected. The permanent swaged connection is maintained at one end to provide strong anchoring, while the other end incorporates connection means that allow adjustable length by connecting or disconnecting segments, achieving both strength and adaptability
Solution Approach 2:
The connection means at the adjustable end serves multiple functions: it provides a strong connection when segments are joined, allows easy disconnection for length adjustment, and maintains cable integrity. This multi-functional component resolves the contradiction between permanent strong connection and adjustable length
Data Source
AI summary
A method utilizing an assembly of a sling detachably attached to an adjustment device for suspending one structure relative to another structure. The adjustment device comprises a pair of elongate spaced apart plates which are attached to each other and to a hook, for attachment to one of the structures, at the first end portion. Each plate has a plurality of pairs of longitudinally spaced aligned holes for receiving a pin for connecting one end of a sling to the adjustment device at a selected incremental one of the plurality of pairs of holes. The other end of the sling is connected to the other structure to adjust the distance over which the one structure is suspended relative to the other structure. To allow greater adjustability, two or more of the adjustment devices are joined end-to-end.