Concrete Reinforcement Spacer Structure for Easy Dragging
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Solution Overview
Problem
Existing spacers for concrete reinforcements, such as lattice girders with triangular or trapezoidal cross sections, are difficult to drag across reinforcement mats due to their design, necessitating a need for new spacer types and production methods that simplify handling and material efficiency.
Innovation Solution
A method involving at least six parallel longitudinal rods forming a lattice structure with transverse rods connected perpendicularly, where the transverse rods are cut at an angle to create oblique ends and then bent to produce spacers with minimal overhang, allowing for easy dragging and stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If lattice girders with triangular or trapezoidal cross section are used as spacers, then high strength is achieved with minimal material, but they are difficult to drag across the bottom reinforcement mat
Solution Approach 1:
The spacer is divided into multiple longitudinal rods (at least three) connected by transverse rods, forming a lattice structure. This segmentation allows the spacer to maintain high strength through the distributed framework while reducing material usage compared to solid cross-sections. The segmented design also creates a flatter profile that facilitates dragging across reinforcement mats.
Solution Approach 2:
The invention transitions from traditional triangular or trapezoidal cross-sections to a lattice structure with multiple longitudinal rods connected by transverse rods. This dimensional reconfiguration creates a flatter, more drag-friendly profile while maintaining structural integrity through the distributed lattice framework. The lattice structure effectively redistributes strength across multiple elements rather than concentrating it in a solid form.
2Loss of substance
If transverse rods are cut at an angle to create oblique ends, then material overhang is minimized, but manufacturing complexity increases
Solution Approach 1:
The transverse rods are pre-cut at angles before being attached to the longitudinal rods. This preliminary action ensures that when the lattice structure is assembled and bent into the final spacer configuration, the transverse rod ends align precisely with the outer longitudinal rods, minimizing material overhang. By performing the cutting operation before assembly, the manufacturing process becomes more efficient and less complex than attempting to achieve precise alignment through post-assembly adjustments.
Data Source
Figure 1
Figure 2A~2B
Figure 3A
AI summary
The present invention relates to spacers for concrete reinforcements, comprising three parallel longitudinal rods, connected to each other by transverse rods which run perpendicular to and are laterally connected to the longitudinal rods; characterized in that the transverse rods do not project, or at most project 1 mm, beyond the outer longitudinal rods. The invention furthermore relates to methods of producing such spacers.