Foundation Anchor Insert and Preload Rod for Low-Deflection Mounting
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Solution Overview
Problem
Conventional anchoring systems for medical imaging equipment, such as PET systems, face challenges in maintaining straight-line performance due to mechanical deflection and tolerances, requiring improved stiffness and adjustment capabilities to meet stricter performance requirements and account for foundation movement over time, while also being cost-effective and easy to install.
Innovation Solution
An anchoring system featuring an insert with a flange on the building foundation, a washer with a recessed portion, and a rod threadably engaged with the insert and washer, which is preloaded to minimize deflection, using a concrete anchor adhesive and a fine internal thread for enhanced stiffness and adjustment resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional anchoring systems are used with internal threads cast in concrete foundation, then installation is simple, but deflection and mechanical tolerance errors occur affecting straight-line performance
Solution Approach 1:
The anchoring system is divided into separate components: a foundation insert with fine threads, a rod element, and a washer element. This segmentation allows each component to be optimized independently - the insert provides precise threading for adjustment while the rod and washer provide structural strength and stiffness to minimize deflection.
Solution Approach 2:
The insert includes a fine internal thread configuration specifically at the threading interface to enable high-resolution adjustment of the rod element position. This local quality enhancement provides the precision needed for straight-line performance without requiring the entire foundation structure to be overly complex.
2Strength
If steel seismic plates are used to mount the imaging system, then stiffness and deflection performance are improved, but cost and labor increase significantly
Solution Approach 1:
The system uses a relatively simple foundation insert with fine threads rather than expensive, heavily machined steel seismic plates. This approach achieves the necessary stiffness through the rod-washer-insert assembly while significantly reducing manufacturing and installation complexity compared to traditional seismic mounting plates.
3Manufacturing precision
If fine internal thread is used in the insert, then adjustment resolution is enhanced, but thread engagement complexity increases
Solution Approach 1:
The fine thread is integrated into a separate foundation insert component rather than being cast directly into the concrete foundation. This segmentation allows the fine threading to be precision-manufactured as a standalone element, simplifying the overall installation process while maintaining high adjustment resolution capability.
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 provides high load-carrying capacity with minimal deflection, reduced installation complexity, and the ability to adjust without reinstallation, enhancing straight-line performance and reducing service costs by distributing loads effectively and using a robust thread interface.
Implementation Method 1
an insert attached to the foundation by an adhesive
Implementation Method 2
the rod element is preloaded to minimize deflection of the equipment
Data Source
AI summary
An anchoring system for attaching equipment to a building foundation. The system includes an insert attached to the foundation by an adhesive, wherein the insert includes a flange that is positioned on a top surface of the foundation. The system also includes a washer element having a recessed portion for receiving the flange, wherein the washer also contacts the top surface. In addition, the system includes a rod element having a reference element, wherein the rod element is threadably engaged with the insert and the washer and wherein when the reference element is aligned with a reference plane indicative of level equipment, the washer is tightened against the top surface to preload the rod element to minimize deflection of the equipment.