Aluminum Leg Assembly for Stackable Intermodal Platforms
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Solution Overview
Problem
Existing ISO shipping pallets are heavy, labor-intensive to assemble, and lack sufficient support for stacked platforms, leading to inefficiencies and potential sagging under load.
Innovation Solution
The system employs aluminum legs with extendable sections and centered castings on the platform sides, featuring a unique anchor mechanism and bushing structure to facilitate easy assembly and disassembly, providing lightweight and interchangeable support for multiple platforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional steel corner posts are used, then structural strength is maintained, but weight increases and ease of operation deteriorates
Solution Approach 1:
The patent changes the material parameter from steel to aluminum, reducing the density and weight of the corner posts while maintaining structural strength through optimized aluminum alloy composition and cross-sectional geometry. This parameter change enables single-person handling and reduces assembly difficulty.
Solution Approach 2:
The corner post employs a composite structure combining aluminum alloy with steel reinforcement elements and polymer protective coatings. This composite approach maintains the required structural strength while significantly reducing weight compared to solid steel construction, improving ease of operation.
2Strength
If conventional steel corner posts are used, then structural strength is maintained, but installation time increases
Solution Approach 1:
The corner post is segmented into modular components including adjustable height sections, interchangeable corner castings, and separate anchor mechanisms. This segmentation allows for quick assembly and disassembly without requiring specialized tools or complex installation procedures, reducing installation time while maintaining strength.
Solution Approach 2:
The corner post incorporates adjustable and reconfigurable elements that allow dynamic adaptation to different platform sizes and load requirements. The telescoping sections and interchangeable castings enable rapid reconfiguration during installation, reducing the time required to assemble the complete platform structure.
3Manufacturing precision
If conventional corner posts with left and right posts are used, then proper positioning is achieved, but inventory requirements increase
Solution Approach 1:
The corner post design eliminates the distinction between left and right posts by providing universal, interchangeable corner castings that can be positioned at any corner of the platform. All corner castings are identical and can be used in any orientation, reducing inventory requirements to a single type of component while maintaining precise positioning through standardized attachment mechanisms.
4Productivity
If platforms are stacked to avoid wasted space, then space utilization improves, but load support capability deteriorates
Solution Approach 1:
The corner posts are pre-designed with integrated anchor mechanisms and reinforced casting structures that provide preliminary structural preparation for stacking platforms. The anchor portions are pre-configured to engage with the platform castings, and the corner castings include pre-built reinforcement features that enable safe load-bearing capacity for stacked configurations before assembly occurs.
Solution Approach 2:
The corner post uses composite material construction with aluminum alloy bodies, steel reinforcement cores, and polymer protective layers to achieve high strength-to-weight ratio. This composite structure provides the necessary load support capability for stacked platforms while keeping individual post weight manageable, enabling both stacking efficiency and structural integrity.
Data Source
AI summary
The intermodal warehousing system includes a platform, a plurality of legs, four corner castings, and additional castings located on the long sides of the platform. Each of the legs may be extendable with an anchor located at one end and a casting located at the other, the leg and the casting being comprised of aluminum. The anchor is carried by a steel plate that is bolted to the leg. To avoid a galvanic reaction, aluminum bushings with steel inserts are welded to the interior of the leg and steel bolts secure the steel plate to the steel inserts. An external handle includes a bolt extending into said leg and cooperating with a wedge located therein that moves the anchor up or down. The handle bolt, wedge and anchor are so constructed and arranged so that rotation of the handle moves the anchor up or down to lock the leg to a casting.