I-Shaped Cargo Restraint Device for Intermodal Containers
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Solution Overview
Problem
Existing cargo restraint devices are ineffective for industry intermodal shipping containers with corrugations spaced 5⅜ inches apart, as they fail to securely hold cargo due to mismatched dimensions.
Innovation Solution
A cargo restraint device with parallel, rectangular wings spaced 5⅜ inches apart, secured to corrugations using adhesive, featuring strengthening ribs and a lip for added rigidity, and a handle for strap attachment to restrain cargo within intermodal shipping containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing cargo restraint devices are used, then they can be secured to container walls, but they fail to securely hold cargo due to mismatched corrugation spacing
Solution Approach 1:
The device changes the critical parameter of wing spacing from generic dimensions to precisely 5⅜ inches, matching the corrugation spacing of intermodal shipping containers. This parameter adjustment enables the restraint device to securely engage with the container walls, resolving the incompatibility issue while maintaining reliable cargo restraint functionality
2Adaptability or versatility
If the wings are spaced 5⅜ inches apart to match corrugations, then the device can be secured to intermodal containers, but the structural strength may be compromised
Solution Approach 1:
The device employs composite construction combining rigid plastic material for the central member and wings with adhesive bonding. This composite approach allows the wings to be spaced precisely 5⅜ inches apart for corrugation compatibility while the adhesive and rigid material composition maintain sufficient structural strength to secure cargo effectively
3Reliability
If adhesive is applied to the bottom surface of the wings, then the device can be securely mounted to corrugations, but the manufacturing process becomes more complex
Solution Approach 1:
The adhesive is pre-applied to the bottom surfaces of the wings during manufacturing, creating a ready-to-install device. This preliminary action allows workers to simply press the device against the corrugations without requiring complex mounting procedures, thereby improving mounting security while minimizing manufacturing complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively secures cargo by accommodating the specific corrugation spacing and providing enhanced strength and rigidity, ensuring reliable cargo restraint during transport.
Implementation Method 1
securing a bottom surface of the first wing to the first corrugation with an adhesive applied to the bottom surface of the first wing
Data Source
AI summary
An I-shaped cargo restraint device for an intermodal shipping container having an internal wall with corrugations comprising: a central member having a pair of ends; a first wing associated with one of the ends for securing to one of the corrugations; a second wing associated with the other of the ends extending parallel to the first wing, the second wing being spaced apart from the first wing by about 5⅜ inches for securing to an other corrugation adjacent to said one corrugation; and a handle associated with the second wing. The cargo restraint device includes a top surface and a plurality of strengthening ribs disposed thereon. The cargo restraint device including a strengthening lip disposed on the top surface extending around a perimeter of the cargo restraint device. A method of restraining cargo in an intermodal shipping container having internal corrugated walls.