Scaffolding Fastening Device With Segmented Couplings
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Solution Overview
Problem
Existing scaffolding systems fail to securely and flexibly fasten diagonal struts to vertical posts, limiting the transmission of forces to the posts and resulting in inadequate bracing and stability, especially under wind loads and misalignment.
Innovation Solution
A fastening device with a diagonal coupling and vertical coupling that includes a projection for secure engagement with the vertical post, allowing for defined positioning and rotation, enabling full force transmission and flexible mounting, using a sheet metal design with elongated holes and a connecting section for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a half-coupler is used to connect the diagonal brace to the vertical post, then the connection allows vertical movement and rotation of the diagonal brace, but the transmission of normal forces into the vertical post is insufficient
Solution Approach 1:
The fastening device is divided into two functional segments: a vertical coupling that engages with the vertical post and allows vertical movement, and a diagonal coupling that rigidly connects the diagonal brace. This segmentation allows each part to fulfill its specific function - the vertical coupling provides adaptability while the diagonal coupling ensures force transmission.
Solution Approach 2:
The vertical coupling acts as an intermediary element between the diagonal brace and the vertical post. It mediates between the need for flexibility (vertical movement) and the need for stability (force transmission) by providing a controlled engagement mechanism that allows movement in one direction while maintaining rigid connection for force transfer.
2Ease of operation
If the diagonal brace position and orientation are not determined, then flexible mounting is possible, but the bracing stability and force transmission are insufficient
Solution Approach 1:
The fastening device incorporates dynamic characteristics by allowing the vertical coupling to move vertically along the post while maintaining a determined orientation for the diagonal brace. This dynamic capability enables flexible mounting during installation while ensuring stable bracing once positioned.
Solution Approach 2:
The device provides different degrees of freedom at different locations: the vertical coupling allows vertical movement at its engagement point with the post, while the diagonal coupling maintains a fixed, determined orientation for the diagonal brace. This local differentiation of constraints achieves both flexibility and stability.
3Stability of the object's composition
If additional anchors and triangular supports are used to improve stability, then bracing is enhanced, but the device complexity and number of components increase
Solution Approach 1:
The vertical coupling serves multiple functions simultaneously: it provides structural support, allows vertical adjustment, enables rigid connection for force transmission, and simplifies the overall assembly by eliminating the need for separate anchors and triangular supports. This multi-functionality reduces component count while maintaining stability.
Solution Approach 2:
The invention merges the functions of multiple separate components (anchors, triangular supports, and connection elements) into a single integrated fastening device. The vertical coupling and diagonal coupling work together as one unit that provides both stability and ease of assembly, reducing the total number of parts required.
Data Source
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AI summary
The invention relates to a fastening device (20) for fastening a diagonal strut of scaffolding (10) to a first stanchion (12). The fastening device (20) can be interlocked with the first stanchion (12) by means of a projection (40) engaging in a first stanchion opening (42), in particular in the form of a through-opening. The diagonal strut can be fastened to a diagonal coupling (38) of the fastening device (20). Preferably, the diagonal coupling (38) is directly connected to the projection (40). The fastening device (20) also has a vertical coupling (36) which is connected to the diagonal coupling (38). Removal of the projection (40) from the stanchion opening (42) can be prevented by means of the vertical coupling (36).