Fiber-Plastic Composite Transport Anchor for Double Walls
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Solution Overview
Problem
Existing transport anchors for double- and sandwich walls face issues with stability, deformation, and damage due to high forces during transport, particularly with steel pressure elements that can lead to welding weaknesses, material degradation, and moisture-related problems, and are costly and complex to manufacture.
Innovation Solution
A transport anchor featuring a pressure element made of fiber-plastic composite material with end caps that securely attach to anchor legs, or alternatively, a steel pressure element with identical end caps, providing enhanced stability, watertightness, and resistance to cold bridges, rust, and flaking, along with a flexible base body that can be easily manufactured.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a steel pressure element is used and welded onto the anchor legs, then the pressure element can effectively absorb forces during transport, but the welded seams become weakened areas that are prone to tearing and deformation
Solution Approach 1:
The patent removes the welding process entirely from the assembly method. The pressure element is inserted into the anchor leg hollow section without any thermal or mechanical joining processes, eliminating the weakened welded seams while maintaining force absorption capability through friction and geometric constraints
Solution Approach 2:
The hollow section of the anchor leg acts as an intermediary structure that receives and secures the pressure element. This intermediate space allows the pressure element to be held firmly by the end cap and friction against the hollow section walls, providing reliable connection without welding
2Strength
If a steel pressure element is used, then the structural strength is sufficient, but the welding process locally changes and weakens the surrounding material, reducing stability
Solution Approach 1:
The patent extracts the harmful welding process from the assembly method, replacing it with a cold insertion process. The pressure element and anchor legs are assembled without thermal influence, preserving the original material properties and avoiding localized weakening of the steel components
Solution Approach 2:
The pressure element is designed as a replaceable component that can be easily inserted and removed. This modular approach allows for simple replacement if needed, and the design prioritizes ease of assembly over permanent attachment, reducing manufacturing complexity
3Strength
If a steel pressure element is used, then force absorption is adequate, but the welded joints can lead to the transport anchor breaking out of the concrete, causing collapse
Solution Approach 1:
The patent removes the welding process that creates failure points, replacing it with a friction-based holding mechanism. The pressure element is secured by the end cap and friction against the hollow section, eliminating the risk of welded joint failure and subsequent anchor collapse
Solution Approach 2:
The hollow section and end cap assembly is designed to provide pre-compression and frictional resistance before any load is applied. This preliminary mechanical constraint prevents the pressure element from shifting or detaching under transport loads, avoiding anchor failure
4Strength
If wood is used as the pressure element, then forces can be absorbed, but the wood can absorb liquid resulting in rotting or freezing and expanding, causing damage
Solution Approach 1:
The patent employs a steel pressure element that is impervious to moisture, rot, and freezing. This durable material replacement eliminates the biological degradation issues associated with wood, providing a long-lasting solution suitable for concrete embedding
Solution Approach 2:
The pressure element is designed as a composite system combining steel material with a plastic or polymer end cap. This composite structure provides both the strength of steel and the sealing properties of plastic, preventing moisture ingress while maintaining force absorption capability
5Reliability
If existing transport anchor designs are used, then the pressure element can be attached, but the manufacturing process is complicated and cost-intensive
Solution Approach 1:
The patent divides the transport anchor into separate modular components: anchor legs with hollow sections, a pressure element, and end caps. This segmentation allows each component to be manufactured independently using simple processes, then assembled through straightforward insertion, significantly reducing manufacturing complexity and cost
Solution Approach 2:
The patent extracts the complex welding, sealing, or fastening operations from the manufacturing process. The pressure element is simply inserted into the hollow section and held by the end cap, eliminating the need for specialized equipment, skilled labor, or multi-step assembly processes
Data Source
AI summary
A transport anchor for double walls, includes a bow-shaped basic body, having an arcuate central portion for suspending slinging components, two anchor legs which emanate from the central portion and extend substantially parallel to one another, and a pressure element which is arranged between the anchor legs. The pressure element is formed from a fibre-plastic composite material and has, at its two ends, end caps which are placed by their open side onto free ends of the cylindrical pressure element and which each have openings through each of which an anchor leg extends.