Slab Formwork Anti-Lift Device for Vertical Support
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Solution Overview
Problem
Existing ceiling formwork systems are prone to accidental detachment of formwork elements from vertical supports under applied forces, posing a risk of accidents during assembly and disassembly.
Innovation Solution
The introduction of an anti-lift device with hook elements that securely engage between the vertical support and the formwork element, preventing unintentional detachment or shifting, and allowing for economic and efficient production without the need for additional parts or tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If formwork elements are coupled to vertical supports using conventional connection methods, then assembly is simple and economical, but the formwork elements can easily become detached under applied forces
Solution Approach 1:
The connection system is divided into separate functional elements: the C-shaped carrier with its inherent hook capability, and additional fixing elements attached to the vertical support head. This segmentation allows the carrier to provide basic support while the fixing elements prevent longitudinal displacement, resolving the contradiction between simple assembly and reliable connection.
Solution Approach 2:
The C-shaped carrier utilizes its asymmetric geometry where one leg serves as a support surface and the other leg or base section provides the hooking function. This asymmetric design enables the carrier to engage with the vertical support in a specific orientation, preventing accidental detachment while maintaining ease of assembly through intuitive positioning.
2Reliability
If additional fixing elements are added to prevent detachment, then safety is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The fixing elements are merged with the vertical support head through direct attachment or integration, creating a unified assembly. This merging approach ensures that the anti-lift protection becomes an inherent part of the support structure, eliminating the need for separate handling of additional parts during assembly and reducing manufacturing complexity despite the added safety function.
Solution Approach 2:
The C-shaped carrier is designed with multi-functionality: its body provides support surface contact, its legs provide hooking engagement, and its geometry inherently resists certain方向的 movements. This universal design allows a single component to fulfill multiple protective functions, reducing the need for additional specialized parts and maintaining manufacturing simplicity.
3Ease of manufacture
If the C-shaped carrier uses both legs for dual functions, then cost-effectiveness is improved, but the structural design becomes more complex
Solution Approach 1:
The C-shaped carrier is designed so that one leg serves dual purposes: providing a support surface for resting on the vertical support head and simultaneously forming part of the hooking mechanism. This multi-functionality reduces the need for separate components, improving cost-effectiveness while the inherent geometric complexity of the C-shape remains manageable and intuitive for assembly.
Solution Approach 2:
Different regions of the C-shaped carrier are optimized for specific functions: the base section provides overall structural integrity and hooking capability, one leg is shaped to provide a flat support surface, and the other leg maintains the C-shape for engagement. This local optimization allows each part of the carrier to fulfill its specific role efficiently without requiring excessive overall complexity.
Data Source
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AI summary
The invention relates to a slab formwork system comprising a plurality of formwork elements (98) which have on their underside girders (2) which can be coupled to heads (28) of vertical supports (90), in which slab formwork system the head of a vertical support has a lifting lock (44-51; 87) fixing a girder of a formwork element in the vertical direction. In addition, the head of a vertical support has fixing elements (52-66) which prevent a movement of the grider in its longitudinal direction.