Paving Stone Edging Grid Layout to Prevent Nail Pullout
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Solution Overview
Problem
Existing edging arrangements for paving stones fail to effectively secure the stones along the edge of a walking surface without curb stones, leading to displacement and unevenness due to forces acting perpendicular to the surface, causing the ground nails to become dislodged.
Innovation Solution
An edging arrangement with a base plate, support plate, and fixing grid connected to the base plate, featuring holes for ground nails on the opposite edge of the fixing grid, ensuring the nails are anchored deeply under the surface to resist outward forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ground nail is rigidly attached to the curb stone, then the curb stone can be fixed in place, but the upward force from displacement and tilting moves the nail upward from its position, reducing the fixing effect
Solution Approach 1:
The ground nail is positioned at the edge of the fixing grid farthest from the base plate, extending vertically deep into the ground rather than horizontally along the curb stone. This vertical positioning in a different dimensional orientation allows the nail to resist upward forces from curb stone displacement while maintaining its anchoring function.
2Ease of operation
If the ground nail is positioned on the base plate side, then the nail can be easily accessed for installation, but the torque arm is short and provides inadequate resistance against the curb stone falling out
Solution Approach 1:
The ground nail is repositioned to the edge of the fixing grid farthest from the base plate, maximizing the torque arm length. This positioning creates a longer lever arm that provides greater resistance against the curb stone falling out, while the nail can still be installed through the hole in the fixing grid.
3Stability of the object's composition
If curb stones are placed on the edges of the walking surface, then the paving stones are prevented from moving out, but the curb stones may move in the direction of the ground over time, breaking the unity of the walking surface
Solution Approach 1:
The fixing grid acts as an intermediary structure between the base plate and the outermost paving stones. The ground nail is positioned at the edge of this fixing grid, creating a stable anchoring point that prevents both the curb stones and paving stones from moving out, while maintaining the unity of the walking surface.
Data Source
AI summary
This invention relates to a paving stone edging arrangement (1) having a base plate (2), a support plate (3) attached perpendicularly to the base plate (2), and a fixing grid (5) connected to the edge (4) of the base plate (2), and at least one hole (8) for a ground nail (S), and the hole (8) for the ground nail (S) is formed on the opposite edge 6 of the fixing grid (5) farthest from the base plate (2).