Anchor Bolt Positioning Device with 3-Axis Gimbal
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Solution Overview
Problem
Existing anchor bolt systems face challenges in maintaining the position and orientation of anchor bolts within concrete slurry during pouring, as they are subject to flow forces, and require cumbersome templates or protective covers that complicate installation and increase labor costs, making them unsuitable for DIY and mass consumption applications.
Innovation Solution
A device comprising a flange portion and raised column projection with a 3-axis gimbal mechanism allows for precise orientation and positioning of anchor bolts within concrete slurry, maintaining their position during curing, and features a fracture cone enlargement for enhanced pull-out resistance, eliminating the need for separate washers and templates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If template style devices are used to position anchor bolts in concrete slurry, then the anchor bolts can be positioned during pouring, but the devices become bulky and awkward to use and require securing to concrete forms
Solution Approach 1:
The device is divided into separate components: an anchor bolt assembly with positioning features and a separate concrete form. The anchor bolt assembly includes a positioning member that interfaces with the concrete form, allowing the bolt to be positioned without a bulky template structure. This segmentation eliminates the need for complex template devices while maintaining positioning precision.
Solution Approach 2:
The anchor bolt assembly serves multiple functions: it positions the anchor bolt, secures it during pouring, and interfaces with various concrete form configurations. The positioning member can adapt to different form geometries, making the device universal and eliminating the need for specialized template structures for each application.
2Manufacturing precision
If template devices are secured to concrete forms to position anchor bolts, then positioning is possible, but the devices are bulky and awkward and limit placement to areas adjacent to forms
Solution Approach 1:
By separating the anchor bolt positioning function from the concrete form structure, the device can be placed independently of form locations. The positioning member interfaces with the form when needed but is not restricted to form-adjacent placements, enabling versatile positioning throughout the concrete structure.
Solution Approach 2:
The positioning member acts as an intermediary between the anchor bolt and the concrete form. It provides the positioning function when the bolt needs to be placed near a form, but its presence is not required for all placements, thereby expanding placement flexibility while maintaining precision where needed.
3Reliability
If protective covers are used to protect anchor bolt threads, then threads are protected from damage, but the covers complicate installation and require removal by contractors
Solution Approach 1:
The anchor bolt is pre-positioned and secured in the concrete with the correct orientation and depth during the pouring process. This preliminary positioning eliminates the need for subsequent protective covers, as the bolt is already in its final position and the threads are exposed only when needed for attachment.
Solution Approach 2:
The protective cover function is extracted and eliminated by properly positioning the anchor bolt during concrete placement. The bolt is secured in place with its threads naturally protected by the concrete matrix until the attachment phase, removing the need for separate protective cover components and their associated installation and removal steps.
4Ease of manufacture
If conventional anchor bolts are used in concrete slurry, then installation is simple, but flow forces during pouring cause movement, breaking, and mispositioning
Solution Approach 1:
The anchor bolt assembly includes dynamic positioning features that adapt to the concrete pouring process. The positioning member allows for initial placement and then stabilizes the bolt during slurry flow, maintaining position stability while accommodating the dynamic conditions of concrete pouring. This enables simple installation procedures without sacrificing position reliability.
Solution Approach 2:
The device incorporates features that preemptively counteract the harmful effects of concrete slurry flow forces. The positioning member and securing mechanism are designed to resist lateral forces and prevent movement, breaking, and mispositioning before they can occur during the pouring process, thereby maintaining both installation simplicity and position stability.
Data Source
AI summary
An anchor bolt device includes an anchor bolt having a threaded first end and a second end. A flange portion has the threaded first end of the anchor bolt extending freely therefrom. The flange portion defines a planar surface aligned in parallel with a surface of a concrete foundation when the second end of the anchor bolt is received in the concrete foundation. A raised column projection having a threaded portion through which the threaded first end of the anchor bolt is threadably received. The raised column projection is set to a user defined position. The flange portion extends radially outward from and is integrally connected to the raised column projection. The flange portion has at least one offset tab used to position the device a defined distance away from a boundary of a concrete foundation wall. The offset tab includes a series of marks defining multiple break points.