Double-surface contact tray loading base
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Solution Overview
Problem
Existing cargo tray support systems suffer from stress concentration, leading to reduced strength and fatigue life, causing potential cracks and safety issues during cargo transport due to single-sided load distribution.
Innovation Solution
A double-surface contact tray loading base is designed with a hook lug and support plate on either side of the loading surface, mounted on a bracket with increased contact area to disperse stress, along with longitudinal and transverse stoppers and a reinforcement rib for enhanced stability and loading capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple single-sided hook support structure is used, then the device complexity is reduced, but the stress concentration increases and the fatigue life decreases
Solution Approach 1:
The patent transitions from a single-sided support structure to a double-sided support structure by adding support elements on both the inner and outer surfaces of the bracket. This dimensional expansion distributes the load across multiple contact points, reducing stress concentration on individual hooks while maintaining relatively simple overall structure.
Solution Approach 2:
The support function is segmented into multiple independent support elements (inner support surface, outer support surface, and additional support hooks) that collectively bear the load. This segmentation allows the stress to be distributed across multiple points rather than concentrated on a single hook, extending fatigue life without significantly increasing complexity.
2Ease of manufacture
If a single force receiving surface is used, then the manufacturing is simplified, but the loading capacity is reduced
Solution Approach 1:
The patent adds a second force-receiving surface by implementing support elements on both the inner and outer surfaces of the bracket. This double-sided contact configuration effectively doubles the load-bearing area, increasing loading capacity while maintaining manufacturing simplicity through the use of standard bracket components.
Solution Approach 2:
The patent combines multiple support functions (inner support, outer support, and additional hooks) into a single integrated bracket assembly. This merging of support elements creates a unified structure that provides enhanced loading capacity without requiring separate manufacturing processes for each support component.
3Ease of operation
If hooks are mounted on bracket side walls, then the installation is simplified, but the stress concentration problem occurs frequently
Solution Approach 1:
The patent expands the support from a single location on the bracket side wall to multiple locations by adding support surfaces on both the inner and outer surfaces. This spatial distribution of support points reduces the stress burden on any single hook while maintaining the simplicity of bracket-mounted installation.
Solution Approach 2:
The patent enhances specific local areas of the bracket by adding reinforced support surfaces and additional hooks at critical stress points. These localized quality improvements address stress concentration problems without requiring a complete redesign of the entire bracket structure, preserving installation simplicity.
Data Source
Figure 1~2
Figure 3~4
AI summary
A double-surface contact tray loading base comprises a loading surface (4) and a hook (1) arranged on an outer end of the loading surface (4), the hook (1) comprises a hook lug (1-2) and a support plate (6), the hook lug (1-2) is arranged on an upper side of the outer end of the loading surface (4), and the support plate (6) is arranged on a lower side of the outer end of the loading surface (4), thus forming the double-surface contact tray loading base.