Folding Expansion Trailer Linkage for Constant-Height Capacity Gain
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Solution Overview
Problem
Existing folding trailers face challenges in optimizing their structure to increase capacity while maintaining a consistent height before and after folding, resulting in inconvenient and non-smooth folding processes.
Innovation Solution
A folding expansion trailer design featuring interconnected side folding, bottom support, and expansion components, where the front and rear frames converge towards the center during folding, ensuring the height remains unchanged, and the expansion component increases unfolding length without altering the width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the trailer uses a traditional folding structure to maintain consistent height before and after folding, then the height remains unchanged, but the capacity is limited and the folding process is not smooth
Solution Approach 1:
The trailer body is divided into a fixed front portion and an expandable rear portion connected by articulation points. The rear portion can be segmented into multiple sections that fold independently, allowing the trailer to maintain a compact height when folded while expanding to increase capacity when unfolded.
Solution Approach 2:
The trailer employs dynamic articulation mechanisms with hinges and connecting rods that enable smooth transitions between folded and unfolded states. The side folding components use articulated linkages that guide the movement of panels during folding, ensuring a controlled and smooth folding process while allowing capacity expansion.
2Length of moving object
If the trailer expands to increase capacity, then the unfolding length increases, but the width should remain unchanged
Solution Approach 1:
The expansion mechanism is designed with asymmetric articulation where the rear expansion section articulates primarily in the longitudinal direction. The side folding components are configured to fold along the length of the trailer rather than expanding widthwise, allowing increased unfolding length while maintaining consistent width.
Solution Approach 2:
The trailer expansion is achieved by utilizing the longitudinal dimension through articulation and telescoping sections rather than expanding in the width dimension. The side panels fold lengthwise, converting width space into extended length capacity while keeping the overall width profile consistent.
3Shape
If the trailer uses a compact folding design, then the height remains consistent, but the structural complexity increases
Solution Approach 1:
Multiple folding functions are merged into integrated side folding components that combine hinge mechanisms, articulation points, and support structures into unified assemblies. The bottom support component integrates with the side folding mechanism, reducing the number of separate systems while maintaining height consistency during folding.
Solution Approach 2:
The articulation mechanisms serve multiple functions: they enable side folding, support bottom panel movement, guide expansion/contraction, and maintain structural integrity. This multi-functionality reduces the need for dedicated components for each function, simplifying the overall structure while achieving height consistency.
Data Source
AI summary
A folding expansion trailer comprises a front frame, a rear frame, side folding components, a bottom support component and an expansion component, wherein upright rods are respectively arranged on the front frame and rear frame, sliding sleeves are arranged on the upright rods; each side folding component comprises a plurality of X-shaped cross articulation pieces which are sequentially articulated; the bottom support component comprises a front bottom frame, a rear bottom frame and a limiting piece, the front bottom frame is hinged with the rear bottom frame, and the limiting piece is used for supporting and limiting the front bottom frame and the rear bottom frame; the expansion component comprises an expansion frame and connecting rod mechanisms, the expansion frame is hinged with two rear upright rods, and sliding sleeves on the rear upright rods drive the expansion frame to rotate via the connecting rod mechanism.