H-Shaped Hollow Profile Support Column for Lifting Platforms
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Solution Overview
Problem
Existing support columns for lifting platforms require complex assembly and additional structural adjustments to achieve sufficient flexural rigidity, leading to increased space requirements and manufacturing effort.
Innovation Solution
A support column with a hollow profile featuring an H-shaped cross-section, comprising interconnected main hollow sections and corner sub-sections, which allows for the integration of lifting platform components and minimizes deformation under load, reducing the need for additional reinforcements and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If stiffeners are installed on or in the support columns to achieve necessary flexural rigidity, then the flexural rigidity is improved, but the assembly work and space requirements increase
Solution Approach 1:
The support column is divided into multiple hollow sections (first, second, and third hollow sections) with different wall thicknesses along its length. This segmentation allows each section to be optimized for its specific structural requirements, achieving the necessary flexural rigidity without adding external stiffeners or reinforcements.
Solution Approach 2:
Different wall thicknesses are applied at different locations of the support column. The first hollow section has a first wall thickness, the second hollow section has a second wall thickness, and the third hollow section has a third wall thickness. This local variation in quality (wall thickness) provides enhanced rigidity where needed while maintaining overall structural efficiency and avoiding complex assembly operations.
2Adaptability or versatility
If additional assemblies are attached to the support column, then the functionality is improved, but the structural adjustments and assembly complexity increase
Solution Approach 1:
The support column is designed with multiple hollow sections that can serve both structural and functional purposes. The hollow sections provide structural support while also serving as mounting spaces for lifting platform components such as cable harnesses, control units, and drive devices. This multi-functionality eliminates the need for separate attachment structures and reduces assembly complexity.
Solution Approach 2:
Lifting platform components are nested within the hollow sections of the support column. The cable harnesses, control units, and other assemblies are positioned inside the hollow spaces, utilizing the column's internal volume. This nesting approach integrates multiple functions within the existing structure without requiring additional external attachments or complex structural modifications.
3Stability of the object's composition
If the support column is designed with high rigidity, then the deformation under load is reduced, but the manufacturing effort and structural complexity increase
Solution Approach 1:
The support column is manufactured as a segmented structure with multiple hollow sections having different wall thicknesses. This segmentation allows for simplified manufacturing processes such as welding or joining pre-fabricated sections, reducing overall manufacturing effort while achieving the desired dimensional stability through the optimized wall thickness distribution.
Solution Approach 2:
The wall thickness parameter is varied along the length of the support column, with the first hollow section having a first wall thickness, the second hollow section having a second wall thickness, and the third hollow section having a third wall thickness. This parameter change optimizes the rigidity-to-manufacturing-effort ratio, providing high dimensional stability in critical areas while simplifying manufacturing in less critical areas.
Data Source
Figure 1
Figure 2a~2c
Figure 3
AI summary
The application relates to a support column 1 of a lifting platform 10 for lifting motor vehicles with a hollow profile 2 extending along a longitudinal axis L of the support column 1, which has at least three interconnected main hollow sections 3.