Trailer Independent Suspension Cross Beam Axle Frame Alignment
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Solution Overview
Problem
Conventional suspension systems for semi-truck trailers lack independent wheel movement and are inadequate for heavy or large trailer applications, often twisting under heavy loads and rough road conditions.
Innovation Solution
An independent suspension apparatus featuring a cross beam with pivotally supported axle frames and stub axles, including a suspension element and adjustment members to maintain alignment and support, allowing for independent pivotal rotation and load-bearing compression, with a cantilevered abutment member for load transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional single axle suspension systems are used, then the structure is simple, but the wheels cannot move independently causing the trailer to rock side to side
Solution Approach 1:
The suspension system is divided into separate independent units - each wheel assembly has its own axle frame that can pivot independently on the cross beam. This segmentation allows each wheel to move independently while maintaining overall system coherence, resolving the contradiction between independent wheel movement and structural simplicity.
2Ease of operation
If pivoting frames are used to support wheels independently, then independent suspension is achieved, but the frames twist under heavy loads and rough conditions
Solution Approach 1:
Multiple support elements are merged into a unified cross beam structure that spans the trailer width. The cross beam integrates multiple mounting points and support functions into a single rigid component, providing stable support for independent axle frames while preventing twisting under heavy loads and rough conditions.
3Strength
If the suspension system is designed for heavy trailer applications, then load bearing capacity is sufficient, but the system becomes inadequate for maintaining alignment
Solution Approach 1:
Adjustment members are incorporated into the hinge assemblies to allow preliminary alignment adjustments before the trailer is put into service. This preliminary action enables proper alignment to be set and locked, ensuring stable trailer composition and alignment while maintaining the heavy load bearing capacity of the reinforced cross beam and axle frame structure.
Data Source
AI summary
An independent suspension apparatus includes a cross beam mounted on two transversely spaced mounting elements of a trailer. Two axle frames are independently pivoted on the cross beam to extend longitudinally of the trailer to distal ends that support stub axles for mounting wheels thereon. A suspension element is supported on each axle frame to act between the axle frame and the trailer frame to support weight of the trailer thereon. Each axle frame is pivotally supported on the cross beam by two hinges, in which each hinge is laterally spaced from the other hinges. Optional adjustment assemblies of each hinge allow the axle frames to be adjustably aligned relative to the trailer frame. In one embodiment, an abutment member is cantilevered from the cross beam to support an upper end of the suspension element relative to the trailer frame.