Adjustable Lally Column with Uplift Protection and Height Adjustment
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Solution Overview
Problem
Existing adjustable columns require multiple personnel and specialized tools for installation, are load limited, and lack adequate uplift protection, which is a concern under severe weather conditions, especially in residential and commercial buildings.
Innovation Solution
An adjustable lally column design featuring a cap plate with selective retention mechanisms and an adjustment mechanism that includes a base plate and threaded fasteners, allowing for height adjustment between a suspended and load-bearing position, providing uplift protection through secure connections to the floor and beam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional adjustable columns use telescopic design with cross-bar and threaded bar, then height adjustment is achieved, but the column becomes load limited and vulnerable to tampering
Solution Approach 1:
The column is divided into separate segments (column body and base plate) that can be adjusted independently. The base plate can be rotated to different positions while the column maintains its structural integrity, allowing height adjustment without compromising load-bearing capacity.
Solution Approach 2:
The invention merges the column with a base plate assembly that includes threaded fasteners and retention mechanisms. This combination creates a unified structure that provides both adjustability and enhanced structural strength, overcoming the load limitations of telescopic designs.
2Manufacturing precision
If traditional adjustable columns require multiple personnel and specialized tools for installation, then height adjustment and alignment can be achieved, but installation time and complexity increase
Solution Approach 1:
The base plate serves multiple functions: it provides height adjustment through rotation, ensures precise alignment via keyed slots, and secures the column through threaded fasteners. This multi-functionality eliminates the need for separate alignment and securing operations, reducing installation complexity.
Solution Approach 2:
The keyed slot mechanism automatically guides the column into proper alignment as the base plate is rotated into position. The self-aligning feature reduces the need for manual adjustment and multiple personnel, simplifying the installation process while maintaining precision.
3Ease of operation
If columns are simply placed in load bearing position without secure connection to floor and beam, then installation is simplified, but uplift protection is insufficient under severe weather conditions
Solution Approach 1:
The base plate is designed with pre-positioned keyed slots and threaded fastener holes that guide the installation process. The keyed slot is oriented to automatically align with the column before securing, ensuring proper orientation and secure connection are achieved as part of the standard installation procedure rather than as separate steps.
Solution Approach 2:
The base plate acts as an intermediary component between the column, floor, and beam. It provides a secure mounting interface with threaded fasteners that anchor the column to the floor and beam, while the keyed slot mechanism ensures proper alignment. This intermediary structure maintains installation simplicity while providing robust uplift protection.
Data Source
AI summary
An adjustable lally column apparatus is described which includes a column, a cap plate and an adjustment mechanism. The cap plate is connected to the column and fasteners are connected to an external beam. The integrated cap plate and column assembly are connected to the fasteners in the beam and the column is suspended from the fasteners. The adjustment mechanism is connected to the column and adjusted to provide a load bearing interface between a floor and the column. A method of adjusting a column includes employing a single person to connect the cap plate and adjustment mechanism, elevating the column to the vertical and using a lever to lift the integrated column and cap plate and connecting the assembled column and cap plate to the beam. The adjustable column is secured to the beam using the fasteners. The adjustment mechanism is connected to a floor and adjusted to place the adjustable column in a load bearing position between the beam and the floor.