Removable Panel Cargo Container Roof Design

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Solution Overview

Problem

Cargo container roofs are prone to damage from improper loading and wear, and existing designs either lack watertightness or are difficult to load, especially in refrigerated containers where insulation and protection from elements are critical.

Innovation Solution

A roof construction featuring removable panels secured between metal or high-strength composite roof bows, with optional top sheets and insulation for refrigerated cargo, designed to enhance structural integrity, precipitation shedding, and ease of loading.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If closed top containers are used to provide excellent protection from the elements, then watertightness and protection are improved, but loading difficulty increases

Engineering Contradiction:

Improveprotection from elementsVSAvoidloading difficulty

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The roof is segmented into multiple removable panels that can be individually taken off, allowing cargo to be loaded through the roof opening while maintaining the protective enclosed structure when panels are in place

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The roof panels are designed to be removable and reconfigurable, transforming the static closed structure into a dynamic system that can open for loading and close for protection, adapting to different operational needs

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If open top containers are used to allow easy loading of bulk goods, then loading ease is improved, but watertightness deteriorates

Engineering Contradiction:

Improveloading easeVSAvoidwatertightness

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The roof is divided into multiple removable panels that can be taken off during loading and replaced afterward, providing easy access for bulk goods while maintaining watertight protection when panels are installed

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The panel design with flanges and securing mechanisms creates a flexible yet effective seal system that can be easily removed and reinstalled while maintaining watertight integrity when closed

Inventive Principle:

Principle #30Flexible shells and thin films

3Strength

If traditional roof structures are used to provide structural integrity, then strength is improved, but susceptibility to damage from improper loading increases

Engineering Contradiction:

Improvestructural integrityVSAvoiddamage from improper loading

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The roof is divided into multiple removable panels secured between roof bows, distributing structural loads across multiple components and allowing damaged panels to be replaced without compromising the entire roof structure

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The roof bows are constructed from high-strength materials with specific geometric profiles (including arced curvature and flanges) that optimize structural integrity while reducing vulnerability to damage from improper loading

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS8888165B2Trailer roof with removable panels

Publication Date: 2014.11.18 VANGUARD NATIONAL TRAILER CORP

AI summary

A cargo container is disclosed having removable panels secured between roof bows that extend across the width of the cargo container. The roof bows may be constructed out of a metal or high strength composite material while the panels may be constructed from a similar high strength material or a lightweight plastic depending on the intended use of the trailer. A top sheet over the roof bows maybe required to secure the panels to the bows, or the top sheet may be optional for additional protection from the weather. Insulation may also be placed between the top sheet and panels if the container is to be used to carry refrigerated cargo.