Core Drill Support Assembly With Spoked Reinforcement Access
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Solution Overview
Problem
Core drills used for drilling holes in hard materials like concrete and masonry are often excessively heavy due to solid steel plates, making them difficult to handle, and lack easy access for clearing wedged material, which can cause operational inefficiencies.
Innovation Solution
A bolt-on drive assembly with a high-strength spoked reinforcer and a disc-mounted drive connection, featuring a cylindrical tube with a hollow chamber, a mounting ring, and removable fasteners, allowing for lighter weight and easier access to the closed end for clearing obstructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a solid steel plate is used to close the end of the core drill tube, then the strength and connection capability are improved, but the weight increases significantly
Solution Approach 1:
The solid steel plate is segmented into a spoked structure with radial arms extending from a central hub. This segmentation maintains structural strength while removing unnecessary material, significantly reducing the weight of the closed end assembly.
Solution Approach 2:
The spoked structure concentrates material only where structurally necessary - at the hub, along the radial arms, and at connection points. This local quality approach provides strength at critical locations while minimizing weight in non-critical areas.
2Strength
If a solid steel plate is used to close the end of the core drill tube, then the connection strength is improved, but the deflection increases
Solution Approach 1:
The spoked structure divides the closed end into multiple radial segments that collectively provide rigidity. The radial arms act as stiffening elements that resist deflection while maintaining a lighter overall structure compared to a solid plate.
Solution Approach 2:
The spoked structure adds three-dimensional rigidity through radial arms extending from the hub, creating a spatial framework that resists deflection in multiple directions while using less material than a solid plate.
3Strength
If a solid steel plate is used, then structural integrity is maintained, but accessibility for clearing wedged material is lost
Solution Approach 1:
The closed end is segmented into removable components - the spoked structure can be separated from the tube, and the drive assembly can be detached. This segmentation creates access paths to the hollow chamber while maintaining structural integrity during operation.
Solution Approach 2:
The closed end structure transitions from a static solid plate to a dynamic assembly with removable parts. The drive assembly and spoked structure can be detached to provide access, then reattached to restore structural integrity, enabling both operation and maintenance.
4Strength
If the drive assembly is permanently fixed, then structural strength is maintained, but adaptability and ease of repair are reduced
Solution Approach 1:
The drive assembly is segmented as a separate removable component from the main tube and closed end structure. This segmentation allows the drive assembly to be detached for repair, replacement, or adaptation while maintaining the structural integrity of the remaining components.
Solution Approach 2:
The drive assembly is designed as a universal, interchangeable component that can be removed and replaced. This multi-functionality allows the same drive assembly to be used with different tube configurations or replaced with upgraded versions, enhancing adaptability while maintaining structural strength through standardized connection interfaces.
Data Source
AI summary
A support assembly for a core drill uses an improved reinforcement. The reinforcement can include an extension extending between a center of the tool and a perimeter of the tool the extension can be a non-planar structure having a channel along a portion of the structure. The reinforcement can include a slanted element that can be associated with the extension, that can be formed monolithic with the extension, or otherwise combined with an extension. Multiple slanted elements can be used to form an extension. A top plate can be included for strengthening the reinforcement.