Frameless Double-Deck Trailer Top for Over-Wide Cargo Access
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Solution Overview
Problem
Existing double-deck trailers are limited by folding rods on the upper deck, preventing the transportation of over-wide items.
Innovation Solution
A double-deck trailer with a frameless top design featuring a cloth pocket system with zippers that converts between closed and open states, allowing over-wide items to be transported by opening the upper deck.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If folding rods are installed on the upper deck to provide carrying space, then the carrying capacity for small items is improved, but the space becomes restricted and cannot accommodate over-wide items
Solution Approach 1:
The upper deck structure is transformed from a fixed rigid frame to a dynamic convertible structure. The folding rods can be rotated and repositioned between different configurations: when spread out they provide multiple carrying spaces for small items, when collapsed they clear the path for over-wide items. This dynamic transformation allows the same structure to serve multiple functions.
Solution Approach 2:
The upper deck carrying space is divided into multiple segmented sections defined by the folding rods. Each folding rod creates a separate compartment or space. By selectively folding or removing specific rods, individual segments can be opened or closed independently, allowing flexible configuration to accommodate different item sizes and shapes.
2Strength
If a rigid frame structure is used for the upper deck, then structural strength and stability are improved, but flexibility and ease of operation are reduced
Solution Approach 1:
The rigid frame is replaced with a dynamic system of folding rods connected by rotatable joints. These joints allow the rods to pivot between fixed and folded positions. The structure maintains rigidity when rods are extended for strength, but can be easily reconfigured by rotating the joints for operational flexibility, combining both strength and ease of operation.
Solution Approach 2:
The folding rod mechanism is designed to be self-supporting through its geometric configuration and connection points. The rods interlock and support each other when extended, providing structural stability without requiring additional fastening mechanisms. This self-service特性 allows the structure to maintain itself in both open and folded states.
Data Source
AI summary
A double-deck trailer with a frameless top includes two front vertical rods and two rear vertical rods respectively; each of the front vertical rods and the rear vertical rods is sequentially fixed with a top fixing piece and a middle fixing piece from top to bottom; a rectangular area is formed between four top fixing pieces and the middle fixing pieces, and a cloth pocket is arranged in the area; the cloth pocket includes side pockets and a front pocket; the side pockets are respectively located between two adjacent front vertical rods and two adjacent rear vertical rods, and the front pocket is located between the front vertical rods and the rear vertical rods; zippers are respectively arranged on both sides of the front pocket; after zippers are pulled down, the front pocket naturally hangs down, and items can pass between front vertical rods and rear vertical rods.