Locking Drill Bit and Setting Tool Head for Stable Concrete Anchors
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Solution Overview
Problem
Conventional anchors in concrete structures tend to weaken and loosen over time due to cracking or chipping around pre-drilled holes, leading to potential collapse of remaining anchors when one fails, especially under stress from natural disasters or thermal changes.
Innovation Solution
An expansion anchor system comprising a drill bit tool with a setting tool head, carbide bits, and a bullet for radial expansion, which secures the anchor by creating an enlarged conical bore hole and utilizing a locking mechanism to stabilize the anchor within the hole.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional anchors are installed in pre-drilled holes, then installation is simple, but anchors weaken and loosen over time due to cracking or chipping around the hole
Solution Approach 1:
The patent applies preliminary action by pre-enlarging the lower portion of the borehole to a conical shape before anchor insertion. This preliminary modification of the hole geometry creates a tapered configuration that mechanically interlocks with the anchor, preventing future cracking and chipping that would compromise anchor stability. The conical enlargement is performed ahead of time using a specialized drill bit with conical carbide tips, ensuring the anchor has a predetermined secure fitting environment.
Solution Approach 2:
The patent applies local quality by modifying only the lower portion of the borehole rather than the entire hole. The conical enlargement is localized to the bottom section where the anchor tip engages, while the upper portion of the hole maintains its original cylindrical shape. This localized modification provides enhanced anchoring security at the critical engagement point without unnecessarily complicating the overall installation process or requiring complete hole redesign.
2Reliability
If the lower part of the pre-drilled hole is enlarged to improve anchor security, then anchor stability improves, but the drilling process becomes more complex
Solution Approach 1:
The patent applies merging by combining the drilling and hole enlargement operations into a single integrated process. The specialized drill bit performs both the initial hole creation and the conical enlargement in one continuous action, eliminating the need for separate drilling and enlargement steps. The drill bit features conical carbide tips that automatically create the tapered configuration as the hole is being drilled, merging two functions into one tool and one operational step.
Solution Approach 2:
The patent applies universality by designing a multi-functional drill bit that serves multiple purposes: it drills the initial hole, enlarges the lower portion to a conical shape, and creates the precise geometry needed for anchor engagement. This single tool performs what would traditionally require multiple specialized tools, simplifying the overall drilling process while achieving the desired conical hole configuration for improved anchor security.
3Volume of moving object
If cutters are used instead of carbide bits to expand the bore hole, then radial expansion is improved, but the tool design becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the hole enlargement function into distinct conical carbide tips positioned on the spreading lamellae. Rather than using a single complex cutter, the tool employs multiple segmented carbide elements that collectively perform the radial expansion and conical shaping. Each carbide tip operates independently to remove material and create the tapered geometry, breaking down a complex expansion task into simpler, manageable segments.
Solution Approach 2:
The patent applies copying by using carbide tips that replicate the desired conical geometry through their own shaped profiles. The carbide tips are formed with specific angles and configurations that directly copy or replicate the target conical hole shape. As these shaped carbide elements engage the material, they naturally carve out a hole matching their own geometry, eliminating the need for complex adjustable cutters or multi-step forming operations.
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 system provides a secure and stable anchor installation by preventing sideways movement and enhancing the anchor's grip within the concrete, reducing the likelihood of failure and collapse.
Implementation Method 1
at least one carbide bit to expand a bore hole
Implementation Method 2
a locking member and at least one locking ridge
Data Source
AI summary
The present disclosure provides for a system to secure an anchor within a bore hole comprising a drill bit tool to be connected and secured to an improved setting tool head. The system is also comprised of an anchor removably secured to the setting tool head to optimize the setting strength of the anchor. The system is also comprised of bullets having preferred size ranges to further optimize the setting of various anchors.