Formwork Panel Tension Unit for Concrete Wall Openings
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Solution Overview
Problem
Existing shutdown devices for concrete walls require complex auxiliary constructions and drill holes for anchorage, making the process cumbersome and requiring subsequent closure of boreholes.
Innovation Solution
A shutdown device with a fastening system that integrates a train unit within the formwork board, allowing it to be embedded in fresh concrete without external anchorage, using a support device that can be attached to the wall without screws or drill holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If auxiliary structures with iron girders and angle iron are used for fastening, then the formwork panel can be securely held in place, but the device complexity and manufacturing complexity increase due to complex auxiliary constructions and drill holes
Solution Approach 1:
The patent extracts and eliminates the complex auxiliary fastening structures (iron girders, angle iron, bolts) from the system. Instead, it uses a simple formwork panel with integrated tension units that are embedded directly into the concrete, removing the need for separate anchoring components and drill holes while maintaining fastening strength.
Solution Approach 2:
The patent merges the fastening function directly into the formwork panel by integrating tension units within the panel structure itself. This combination eliminates the need for separate auxiliary fastening structures and simplifies the overall system while maintaining secure holding capability.
2Strength
If drill holes are created for anchoring, then the formwork panel can be securely fastened to the wall, but subsequent sealing of the drill holes is required adding to the loss of time
Solution Approach 1:
The patent removes the drilling operation entirely from the process. The tension units are embedded directly into the concrete without requiring pre-drilled holes, eliminating the subsequent sealing step and reducing the overall construction time while maintaining anchoring strength.
3Strength
If external drill holes are created for fastening, then the formwork panel can be attached to the wall, but the manufacturing precision and ease of manufacture decrease due to the complex fastening process
Solution Approach 1:
The patent eliminates the drilling and external fastening operations from the manufacturing process. The formwork panel with integrated tension units can be directly attached to the wall and embedded into the concrete, simplifying the fastening process while maintaining attachment strength.
4Strength
If auxiliary structures with multiple components are used, then the formwork panel can be securely held, but the ease of operation decreases due to the cumbersome attachment process
Solution Approach 1:
The patent combines the holding function into the formwork panel itself through integrated tension units. This eliminates the need for separate auxiliary structures and simplifies the attachment operation to a straightforward process of attaching the panel to the wall and embedding it in concrete.
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
This solution simplifies the attachment process by eliminating the need for external anchorage and subsequent borehole closure, while ensuring the formwork board is securely held in place until the concrete hardens.
Implementation Method 1
a fastening device (15) with a tension unit (19), wherein the formwork panel (12) contains a panel opening (20) for the tension unit (19), the tension unit (19) being located with its section assigned to the support device (4) beyond the formwork panel (12) in the opening (10) to be formed and embedded in the fresh concrete (5a) to be filled
Data Source
Figure 1
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AI summary
Formwork device for forming openings (10) on walls with a formwork panel (12) to prevent the escape of fresh concrete (5a) and with a fastening device (15) which holds the formwork panel (12) in its formwork position at the opening (10) to prevent the escape of fresh concrete (5a) filling the opening (10), characterized in that the fastening device (15) has a tension unit (19) which extends through a panel opening (20) of the formwork panel (12) and into the opening (10) and which is supported on one side by a support device (4) arranged on the wall side and can be fixed in the holding engagement directly or indirectly on the formwork panel (12).