Scaffold Wedge Fastening Element with Gravity-Locking Mechanism
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Solution Overview
Problem
Existing fastening elements in scaffolding often experience premature wedging, leading to unintentional detachment and difficulties in attaching the crossbar to the vertical post, as the wedge can fall into the securing position too early, causing laborious removal and attachment challenges.
Innovation Solution
A fastening element with a wedge securing element that can be switched from a securing position to a fastening position, creating a form fit with the perforated disk, preventing premature wedging and allowing for easy alignment and attachment of the crossbar, featuring a sliding bolt mechanism that automatically locks the wedge in place under gravity, facilitating secure and efficient assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wedge support surface is used to prevent unintentional wedge movement, then the fastening element can be slipped onto the perforated disk without blocking, but the wedge can still unintentionally detach from the support surface during fastening
Solution Approach 1:
The wedge head is segmented into an upper head part and a lower head part with separate openings, allowing the wedge to be inserted through the upper opening while the lower opening remains blocked by the wedge securing element until the fastening moment
Solution Approach 2:
The wedge securing element is pre-positioned to block the lower opening in the securing position, preventing premature wedge movement before the fastening operation begins
2Ease of operation
If the wedge is allowed to move freely during attachment, then the fastening element can be easily positioned, but the wedge falls into the securing position prematurely causing laborious removal
Solution Approach 1:
The wedge securing element transitions from a static blocking position to a dynamic released position, allowing the wedge to move from the securing position to the fastening position only when intended
Solution Approach 2:
The wedge securing element acts as an intermediary mechanism between the wedge and the opening, controlling wedge movement and preventing premature engagement while allowing controlled release
3Reliability
If a wedge securing element is added to prevent premature wedging, then the wedge positioning reliability improves, but the device complexity increases
Solution Approach 1:
The wedge securing element is merged with the wedge head structure, forming an integrated component that blocks the lower opening while maintaining the overall compactness of the fastening element
Solution Approach 2:
The wedge securing element serves multiple functions: blocking the lower opening, guiding wedge movement, and enabling the transition from securing to fastening position, reducing the need for separate components
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 prevents premature wedging, simplifies the setup of scaffolding by allowing the crossbar to be aligned without worrying about the wedge, enabling easy and efficient attachment of the crossbar to the vertical post, even in hard-to-reach places, and allows for retrofitted implementation on existing fastening elements.
Implementation Method 1
the wedge automatically locks as it falls from the holding position to a fastening position under the influence of gravity
Data Source
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AI summary
The invention relates to a fastening element (1) for connecting a crossbar (2) to a vertical upright (3) of a scaffold (4). The fastening element (1) comprises a wedge head (5) and a wedge (6), wherein a wedge locking element (7) is formed in the wedge head (5) and the wedge (6) can be inserted into the wedge head (5) through an opening (8), so that the fastening element (1) can be positively connected to a perforated disc (9) of a vertical upright (3). The wedge locking element (7) can be switched from a locking position to a fastening position. According to the invention, the wedge (6) can only be inserted into the opening (8) in the fastening position in such a way that a positive fit is created between the fastening element (1) and the perforated disc (9) during use.