Stabilized Two-Wheeled Trailer Using Leaf Spring and Universal Joint
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Solution Overview
Problem
Narrow gauge two-wheeled trailers face instability issues due to insufficient lateral support, leading to rolling and tilting problems, especially when hauling tall loads with a high center of gravity, as traditional ball-type hitches do not provide adequate torque stability.
Innovation Solution
A narrow gauge two-wheeled trailer design featuring a leaf spring suspension system combined with a universal joint hitch coupling, which includes elongate beams, axle arms, and a universal joint coupling with yokes and pins to resist lateral roll forces while allowing pitch and yaw freedom, ensuring stability and load compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a narrow gauge two-wheeled trailer is used, then space efficiency is improved, but lateral stability deteriorates due to insufficient wheel spacing
Solution Approach 1:
The invention transitions from relying solely on wide wheel spacing for stability to incorporating a vertical stabilization dimension through the stabilization member that extends laterally between the wheels, providing roll resistance without increasing the trailer's footprint width
Solution Approach 2:
A stabilization member acts as an intermediary element between the two wheels, providing lateral connectivity and roll resistance. This member serves as a mechanical mediator that transfers and distributes lateral forces between the wheels, enhancing stability without requiring wider wheel spacing
2Ease of operation
If a ball-type hitch is used, then ease of operation is improved, but torque stability deteriorates when hauling tall loads with high center of gravity
Solution Approach 1:
The hitch assembly is segmented into multiple functional components: the ball-type hitch for basic connection and articulation, and the added stabilization member that provides additional roll resistance. This segmentation allows each component to perform its specialized function while working together to achieve both ease of operation and enhanced torque stability
Solution Approach 2:
The invention merges the traditional ball-type hitch with an additional stabilization member to create a hybrid hitch assembly that combines the operational simplicity of ball hitches with the enhanced torque stability of a more complex articulated connection, allowing the system to benefit from both approaches simultaneously
3Stability of the object's composition
If a two-axis hitch assembly is used, then torque stability is improved, but device complexity increases
Solution Approach 1:
The stabilization member is designed to serve multiple functions: it provides roll resistance, connects the wheels laterally, and works in conjunction with the ball-type hitch to enhance torque stability. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while achieving improved torque stability
4Stability of the object's composition
If wheel base is increased to 36-50 inches, then rolling stability is improved, but device complexity increases
Solution Approach 1:
The stabilization member serves as a mechanical intermediary that connects the two wheels laterally, providing roll resistance without requiring an increased wheel base. This intermediary structure allows the trailer to achieve rolling stability through lateral connectivity rather than through increased longitudinal spacing, thereby avoiding the associated complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The combination of leaf spring suspension and universal joint coupling effectively stabilizes the trailer against lateral rolling and tilting, allowing for secure transport of tall loads without excessive space requirements, even in narrow configurations.
Implementation Method 1
Each of the axles are supported on a leaf spring mounted on the first and second elongate beams and each leaf spring is configured to lengthen or shorten according to load variations as the axles move up and down along an arc
Implementation Method 2
A block joins the yokes of first tubular section with the yokes of second tubular section with a first generally horizontal pin in the pivot ears of the first tubular section transverse to a longitudinal axis of the universal joint coupling and a second generally vertical pin in the pivot ears of the second tubular section perpendicular to the longitudinal axis of the universal joint coupling
Data Source
AI summary
A narrow gauge two-wheeled trailer mounted on spaced apart elongated beams and split axles is stabilized against rolling or tilting about the longitudinal axis with a leaf spring suspension and a universal joint coupling. The split axles are mounted on an axle arms pivoted to the beams and supported by leaf springs configured to lengthen or shorten along the beams. The universal joint coupling permits pitch and yaw movement of the trailer but resists rolling.