Stable Folding Trailer With Triangular Support Structure
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Solution Overview
Problem
Existing folding trailers lack stability when items are placed inside, as the rhombic structure formed by folding side support bars is not sufficiently stable, leading to deformation when the trailer shakes.
Innovation Solution
A more stable folding trailer design featuring a rod assembly with a central movable member, left-right and front-back contraction adjustment assemblies, and a lifting assembly, which ensures a stable structure and easy folding and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If cross-rotating side support bars are folded into a rhombic structure for space saving, then the trailer can be compactly stored, but the structure becomes unstable and deforms when the trailer shakes or carries cargo
Solution Approach 1:
The side support bars are divided into multiple segments that can rotate relative to each other around central fixed points. This segmentation allows the structure to be folded into a compact rhombic shape for storage while maintaining stability when deployed, as each segment can independently adjust to maintain structural integrity under load.
Solution Approach 2:
The structure utilizes changes in geometric parameters (angles and positions of support bars) to transition between folded and deployed states. When deployed, the support bars form a stable configuration with optimized angles that resist deformation, while in the folded state, the parameters change to create a compact rhombic shape for space-efficient storage.
2Stability of the object's composition
If the trailer structure is made more rigid to prevent deformation, then stability improves, but the folding and storage capability becomes more difficult
Solution Approach 1:
The trailer structure employs dynamic elements with rotational joints that allow the support bars to move between different configurations. These dynamic connections enable easy folding and unfolding operations while maintaining structural stability when deployed, as the joints are designed to lock into stable positions that resist deformation under cargo weight.
Solution Approach 2:
The support bars are pre-configured with rotational joints at specific locations that enable intuitive folding motions. The preliminary design of these joint positions and rotation axes ensures that the folding action naturally leads to a stable deployed configuration, reducing the effort required for operation while maintaining structural integrity.
Data Source
AI summary
The application is for trailers, and specifically is a more stable gathering trailer, comprising a rod assembly, which includes four rods, an upper fixing part, a lower fixing part, and a middle movable part, and also includes a left-right contraction control assembly, a left-right contraction control assembly comprising a first right-left adjusting lever, second right-left adjusting lever, third right-left adjusting lever, fourth left-right adjusting lever, fifth right-left adjusting lever, sixth right-left adjusting lever, seventh right-left adjusting lever, and an eighth right-left adjusting lever; when the gathering trailer loaded with cargo, the first left-right adjusting lever, fifth left-right adjusting lever, fourth right-left adjusting lever and the eighth left-left adjusting lever are used. It is difficult to deform when loaded with goods because the sixth left-right adjusting lever and the seventh left-right adjusting lever can support the fifth left-right adjusting lever and the eighth left-right adjusting lever, respectively.


