Extruded Panel Side Walls for Half-Round Trailer Stability
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Solution Overview
Problem
Half-round trailers are unstable during dumping and cornering due to the flexibility of their aluminum alloy bodies and high ride height, which also limits payload capacity due to excessive spacing of the body above the chassis and inherent curvature of the sheets used in their construction.
Innovation Solution
A trailer design featuring a chassis with left and right rotating wheel and tire assemblies, a body with vertically arranged extruded aluminum double-walled panels, and a curved floor, where the side walls and floor are connected to bottom rails to form a stable cargo space, and a hydraulic lift system for controlled dumping, enhancing stability and payload capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sheet-style aluminum alloy bodies are used for half-round trailers, then ease of manufacture is improved, but stability during dumping and cornering deteriorates due to body flexibility
Solution Approach 1:
The body is divided into a chassis and a separate cargo space that can be independently supported, allowing the chassis to provide structural stability while the cargo space maintains ease of manufacture with sheet aluminum alloy panels
Solution Approach 2:
The support structure is moved from the body walls to the floor and chassis area, creating a rigid support framework in the horizontal plane while maintaining flexible sheet panel construction for the vertical walls
2Ease of manufacture
If sheet-style aluminum alloy bodies with inherent curvature are used, then ease of manufacture is improved, but payload capacity deteriorates due to excessive spacing of the body above the chassis
Solution Approach 1:
The chassis is designed with pre-calculated optimal spacing and support point locations that account for the inherent curvature of sheet aluminum alloy, positioning the cargo space at the ideal height for maximum payload capacity before loading operations
Solution Approach 2:
The vertical spacing parameter between the chassis and cargo space is optimized by using the natural curvature of sheet aluminum alloy panels, which can be formed to specific radii to achieve the ideal cargo space height for maximum payload capacity
3Ease of operation
If high ride height is used in half-round trailers, then ease of operation is improved, but stability during dumping and cornering deteriorates
Solution Approach 1:
The trailer is segmented into a rigid chassis support structure and a separate cargo space, allowing the chassis to be positioned at optimal height for stability while the cargo space maintains ease of operation with flexible sheet panel construction
Solution Approach 2:
The combination of rigid chassis structure with flexible sheet aluminum alloy panels creates a composite system that achieves both stability during dynamic operations and ease of operation during loading and unloading
Data Source
AI summary
A trailer includes a chassis and a trailer body connected to the chassis. The trailer body includes left and right vertical side walls and a curved floor. The left and right side walls each include a plurality of extruded panels each including an inner wall and an outer wall spaced from the inner wall.