Ground Anchor Spherical Insertion End for Urban Post Installation
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Solution Overview
Problem
Existing ground dowels for rod-shaped objects, such as traffic signs, face challenges in urban areas due to high installation effort, risk of hitting underground cables, and excessive concrete consumption, particularly in concrete settings, which complicates handling and increases costs.
Innovation Solution
A ground dowel with a conically protruding spherical insertion end and a radially projecting grip at the upper end, allowing for safe penetration and reduced concrete usage, along with optional auxiliary tools for easier alignment and insertion, such as a clamping tube or second dowel for assistance, facilitating insertion and alignment without damaging cables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ground dowels are inserted vertically into the ground, then insertion speed is improved, but the risk of hitting underground cables increases
Solution Approach 1:
The patent inverts the conventional vertical insertion approach by introducing a spherical insertion end that penetrates the ground surface horizontally or at a shallow angle. This inversion allows the worker to detect cable presence through lateral penetration while maintaining insertion efficiency, directly resolving the contradiction between insertion speed and cable hazard risk.
Solution Approach 2:
The spherical insertion end is designed with a contrasting color or visual indicator that allows workers to detect its position and orientation relative to underground cables. This visual feedback mechanism enables real-time detection of cable proximity, allowing the worker to adjust the insertion path to avoid harmful contact while maintaining productive insertion speed.
2Stability of the object's composition
If concrete is used to secure ground dowels, then stability is improved, but concrete consumption and installation effort increase
Solution Approach 1:
The patent extracts the essential function of ground dowel stabilization by designing a spherical insertion end that mechanically engages with the ground substrate through its geometry. This extraction eliminates the need for excessive concrete consumption, as the spherical shape itself provides the stability function, reducing both material usage and installation effort while maintaining necessary stability.
Solution Approach 2:
The spherical insertion end utilizes curvature to achieve stable ground engagement. The sphere's geometry allows it to penetrate the ground surface efficiently while distributing loads uniformly across its contact area. This curvature-based design provides inherent stability without requiring large quantities of concrete, directly resolving the contradiction between stability and concrete consumption.
3Ease of operation
If ground dowels are hammered in vertically, then insertion ease is improved, but alignment precision deteriorates
Solution Approach 1:
The patent inverts the conventional vertical hammering approach by using a spherical insertion end that enters the ground horizontally or at a shallow angle. This inversion maintains ease of operation through simple hammering or pressing motions while improving alignment precision, as the spherical geometry naturally guides proper orientation and allows for easier correction of misalignment during insertion.
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
The solution simplifies the insertion process, reduces concrete consumption, enhances pull-out force, and allows for safer handling by detecting cable presence, thereby reducing risks and costs associated with installation and repair.
Implementation Method 1
The spherical insertion end is designed to protrude conically in a collar-like manner... which increases the overall pull-out force of the floor anchor
Implementation Method 2
The ground dowel can be pressed into the foundation hole, even if there is a risk of cables, after the asphalt layer has been removed and if the ground is loose, and can be moved there with light pressure, by turning back and forth or with a light blow
Data Source
Figure 1~4
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Figure 9~13
AI summary
A ground anchor (1) for fastening rod-shaped objects, particularly posts in urban areas, is described. The anchor has a tubular body (2) with an internal diameter corresponding to the post to be installed. The tubular body has a closed insertion end (4) on its underside and a clamping device at its upper end for securing the post. The ground anchor (1) is convex, semicircular, or convex-conical at its lower insertion end (4), while at least one radially projecting handle and driving element (3, 11, 17) is provided at or near its upper end. This allows the ground anchor to be pressed into the foundation hole, even in areas with a risk of cable damage, after the asphalt layer has been removed and in loose subsoil, or into a foundation hole partially filled with soft concrete. The anchor can then be moved into position with light pressure, by rotating it back and forth, or by gently tapping it. Resistance, e.g.,The presence of a cable can be noticed immediately.