Duplex Trailing Arm Suspension Resisting Lateral Deflection
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Solution Overview
Problem
Existing vehicle suspension systems for trailers lack effective resistance to lateral deflections and roll stability, particularly due to skid steer forces during turns, leading to increased stress on pivot bearings and reduced roll stability.
Innovation Solution
A connecting member rigidly links right and left trailing arms, forming a unitary duplex assembly that resists lateral deflections and rotational tendencies, reducing stress on pivot bearings and providing anti-roll stiffness without additional complex components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a heavy duty resilient compound trunnion pivot is used to resist lateral deflection, then lateral stability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the lateral resistance function with the existing pivot bearing assembly by integrating a laterally extending arm that connects to the opposite trailing arm. This merging approach eliminates the need for separate complex trunnion pivots or sliding guides, achieving lateral stability through the coupled motion of connected trailing arms while maintaining simpler individual pivot components
2Stability of the object's composition
If a sliding guide or Panhard Rod is added to resist lateral deflection, then lateral stability is improved, but device complexity and maintenance cost increase
Solution Approach 1:
The invention merges the lateral stabilization function into the existing trailing arm structure by adding a connecting arm that links to the opposite side. This integration eliminates the need for separate sliding guides or Panhard rods, achieving lateral stability through the geometric coupling of the connected trailing arms while keeping the overall suspension system simpler and easier to maintain
3Ease of manufacture
If trailing arms are independently mounted without rigid connection, then ease of manufacture is improved, but roll stability deteriorates
Solution Approach 1:
The patent introduces a connecting arm as an intermediary element that rigidly links the right and left trailing arms. This mediator component transfers lateral forces and rotational moments between the opposite trailing arms, providing roll stability and anti-sway characteristics while maintaining the independent mounting advantage for ease of manufacture and assembly
4Stability of the object's composition
If a connecting member rigidly links right and left trailing arms, then roll stability is improved, but device complexity increases
Solution Approach 1:
The connecting arm performs multiple functions simultaneously: it provides lateral force transfer between trailing arms, resists rotational moments during turns, enhances roll stability, and maintains axle alignment. This multi-functionality achieves improved roll stability without proportionally increasing device complexity, as a single component accomplishes what would otherwise require multiple specialized elements
Data Source
AI summary
A duplex trailing arm chassis support system has two longitudinal trailing arm members disposed on respective sides of the vehicle chassis and a structurally connecting cross member joining the two trailing arms to couple the movement of the two respective arms. Resilient cushioning members extend between each of the trailing arms and the underside of the vehicle chassis or between the connecting member and the vehicle chassis to provide resilient support to the vehicle chassis. Each trailing arm carries a wheel axle having wheels on both ends of the axle, each of the wheel axles being pivotally mounted to its respective trailing arm for rotational movement about the longitudinal axis of the trailing arm, allowing the axles to rock from side to side.