Vertical Scaffold Frame with Welded Connection Heads
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Solution Overview
Problem
Existing scaffolding systems face challenges in providing a simple, easy-to-handle, and cost-effective vertical frame that allows for maximum passage height with unhindered access, while also being compatible with modular scaffolding systems and offering versatile connection options for horizontal and diagonal rod-shaped connecting elements.
Innovation Solution
A vertical frame design that forms a torsion-resistant U-, H-, or H-shaped frame, open at the bottom, with a permanent connection system using welded connection heads and perforated disks, allowing for the integration of decking units without the need for hanging aids and enabling optimal combination with modular scaffolding systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a vertical frame is designed to be open at the bottom to maximize passage height, then passage height and accessibility are improved, but structural stability and torsion resistance deteriorate
Solution Approach 1:
The vertical frame is divided into two separate vertical posts instead of a single enclosed structure. This segmentation allows the bottom to remain open for maximum passage height while maintaining structural integrity through the distributed configuration of the two posts, each capable of independent load bearing.
Solution Approach 2:
The frame exhibits asymmetric design where the top portion maintains a closed rectangular configuration for structural rigidity, while the bottom portion is opened up for accessibility. This local differentiation of structural quality allows simultaneous optimization of both stability and passage height.
2Strength
If connection heads are permanently welded to the crossbar to ensure structural integrity, then connection strength is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The connection head and crossbar are merged into a single integrally formed component made of the same material. This eliminates the need for separate welding operations while maintaining full structural integrity, as the connection is inherent to the monolithic structure rather than being a separate assembly step.
Solution Approach 2:
The integrally formed connection head serves multiple functions: it provides structural connection strength, enables standardized attachment to vertical posts through perforated disks, and maintains torsion resistance of the crossbar. This multi-functionality reduces the need for additional components or complex manufacturing processes.
3Stability of the object's composition
If the vertical frame is designed as a monolithic integrally formed structure, then structural stability and torsion resistance are improved, but adaptability and versatility in connection options deteriorate
Solution Approach 1:
While the overall crossbar structure is integrally formed for structural integrity, the connection heads are designed with standardized interfaces that accommodate various connection configurations. This local differentiation allows the monolithic structure to provide stability while the standardized connection points enable versatility in attaching horizontal and diagonal elements.
Solution Approach 2:
The integrally formed connection heads are designed with universal compatibility features, including standardized mounting interfaces and positioning options, that enable the same structural component to serve multiple connection purposes. This allows the vertical frame to maintain structural stability while adapting to different scaffolding configurations and load requirements.
4Device complexity
If decking units are placed directly on the crossbar without hanging aids, then the design is simplified and cost is reduced, but the risk of decking units becoming dislodged increases
Solution Approach 1:
The top surface of the integrally formed crossbar is provided with localized roughening or protrusions at specific positions where decking units make contact. This local modification of surface quality provides friction-based retention and mechanical interlocking without requiring additional hanging aids, thereby maintaining design simplicity while improving decking security.
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 provides a stable, easy-to-assemble, and cost-effective vertical frame that maximizes passage height, ensures unhindered access, and facilitates the use of various connection options, enhancing the versatility and safety of scaffolding systems.
Implementation Method 1
a permanent connection system using welded connection heads and perforated disks
Data Source
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AI summary
The invention relates to a vertical frame element made of metal, in particular for a vertical scaffold frame and/or for a scaffold, with at least one first vertical upright (21) and a rod-shaped horizontal cross arm (23) extending from it, which are permanently connected to each other, with the following features: - at least one first perforated disc with several openings is permanently attached to the upright (21), which is arranged concentrically to the upright (21) and surrounds the upright (21) in a flange-like manner; - at least one first fastening device for attaching a fall protection device is provided on the upright (21) spaced apart from the perforated disc;- The cross arm (23) has a first connecting head at a first end and a second connecting head at a second end extending away from this end, by means of which the cross arm (23) can be fixed or is fixed to a second vertical stem (21) to form a vertical frame; - the first connecting head, preferably each connecting head, is bounded by side wall sections which have wedge-shaped vertical outer surfaces converging towards a center; - the vertical outer surfaces enclose a wedge angle which is preferably about 45 degrees; - the first connecting head, preferably each connecting head, has an upper head section and a lower head section; - a slot open to the respective stem (21) and to the vertical outer surfaces is provided between the upper head section and the lower head section;- the first connecting head, preferably each connecting head, is attached with its slot to the associated perforated disc which projects at least partially into it; - the first connecting head, preferably each connecting head, is permanently connected to the associated stem (21) and preferably also to the associated perforated disc.;