Plastic Strap Transport for Prefabricated Masonry
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for transporting prefabricated masonry using steel straps often result in damage to the bricks due to high forces and weights, particularly at deflection areas.
Innovation Solution
The use of flexible or elastic edge protection members between the bricks and straps, along with plastic straps that provide a prestressing force equal to or greater than the masonry's weight, prevents damage by distributing the force without causing tensile loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If steel straps are used to transport prefabricated masonry, then the masonry can be securely held and transported, but the bricks can be damaged by the high forces and weights occurring during transport
Solution Approach 1:
The patent introduces edge protection members as intermediary elements between the steel straps and the bricks. These protectors are pushed through recesses in the bricks and extend beyond the brick edges to prevent direct contact between the steel straps and brick surfaces, particularly at deflection areas where damage would occur
Solution Approach 2:
The edge protection members are installed in advance before the straps are tensioned during transport. This beforehand protective measure ensures that when high forces act on the masonry during transport, the bricks are already protected from direct contact with the steel straps, preventing damage before it can occur
2Stability of the object's composition
If steel straps are tensioned to hold the masonry securely, then the masonry can be transported without falling apart, but damage to the bricks occurs particularly in the deflection areas of the steel strips
Solution Approach 1:
The edge protection members serve as mediators that allow the steel straps to be tensioned for stable transport while preventing the straps from directly contacting and damaging the bricks. The protectors transmit the holding function without transmitting the harmful mechanical stress to the brick surfaces
3Object-affected harmful factors
If plastic straps are used instead of steel straps, then damage to stones can be avoided, but the tear strength must be at least 800 kg to ensure secure transport
Solution Approach 1:
The patent changes the material parameter of the straps from steel to plastic, which fundamentally alters the interaction with the bricks. Plastic straps eliminate the damage issue while maintaining sufficient tear strength (at least 800 kg) to securely hold and transport the masonry without causing cracks or breakage
Data Source
Figure 1~3
AI summary
In a method for transporting a prefabricated masonry structure 1 with several rows of stacked masonry units 2, at least one crossbeam 3 with suspension devices 4 is placed on the uppermost row of units. At least two spaced-apart straps or belts 5 are looped at least approximately vertically around the masonry units 2 of the masonry structure 1 and around the crossbeam 3. At least the masonry units 2 of the lower row that are within the area wrapped by the straps or belts 5 are provided with edge protectors 7. The straps or belts 5 may be made of plastic.