Polygonal Upright Post for Automobile Elevator Stress Distribution
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Solution Overview
Problem
Existing upright post structures for automobile elevators either increase material thickness or add reinforcing ribs, leading to raw material loss, and there is a need for a design that enhances strength while minimizing material usage.
Innovation Solution
The upright post structure is formed by bending a plate into a polygonal columnar shape with beveled joints and edgefolds, distributing external forces through multiple included angles to reduce stress concentration and improve strength, while also incorporating grooves for additional accessories and structural reinforcement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of the material of the upright post structure is increased, then the strength of the upright post is improved, but the loss of raw materials increases
Solution Approach 1:
The patent transforms the traditional flat plate structure into a three-dimensional polygonal columnar structure with multiple folded surfaces. By bending the plate along multiple lines to form a polygonal cross-section, the structure gains spatial dimensions that provide inherent strength without increasing material thickness, thus resolving the contradiction between strength improvement and material loss.
Solution Approach 2:
The patent introduces curved or folded surfaces by bending the plate along multiple lines to create a polygonal columnar shape. These curved/folded geometric features distribute stress more effectively compared to flat surfaces, enhancing the structural strength without requiring additional material, thereby addressing the contradiction between strength and material consumption.
2Strength
If reinforcing ribs are added on the upright post structure, then the strength of the upright post is improved, but the loss of raw materials increases
Solution Approach 1:
Instead of adding reinforcing ribs that require extra material, the patent creates strength through three-dimensional folding of the plate itself. The polygonal columnar structure utilizes the plate's own material distributed across multiple folded surfaces, providing reinforcement without additional material input and eliminating raw material loss.
Solution Approach 2:
The patent divides the plate into multiple segments through folding lines, creating a polygonal columnar structure with distinct folded surfaces. This segmentation allows each surface to bear specific loads efficiently, providing reinforcement equivalent to adding ribs but without the need for additional material, thus resolving the contradiction between strength improvement and material loss.
3Strength
If the upright post structure is designed with multiple included angles and edgefolds, then the strength of the upright post is improved by reducing stress concentration, but the device complexity increases
Solution Approach 1:
The patent uses three-dimensional folding to create multiple included angles and edgefolds that naturally distribute stress. While this increases geometric complexity, the structure remains a single piece of bent plate, simplifying manufacturing compared to assembling multiple components. The complexity is functional rather than structural, resolving the contradiction between strength improvement and device complexity.
Solution Approach 2:
The patent combines multiple structural functions (strength enhancement, stress distribution, material efficiency) into a single polygonal columnar structure formed by bending one plate. This merging of functions reduces the need for separate reinforcing elements, and while the geometry is complex, the manufacturing process is simplified, balancing structural complexity with manufacturing ease.
Data Source
AI summary
The invention relates to the field of automobile elevators. An upright post structure is provided, wherein the upright post structure is a polygonal columnar structure formed by bending a plate, the upright post structure comprises a back plate, both ends of the back plate in a width direction vertically extend toward the same side of the back plate to form a side plate, end parts of the side plate away from the back plate extend oppositely to form a front plate, wherein the upright post structure further comprises one or a combination of various. Thus, when the upright post structure is subjected to a force in a horizontal direction, the local stress of the upright post is transferred so that the strength of the upright post is improved. The invention further provides automobile elevator using the upright post structure.