Hitch-Mounted Telescopic Rack for Roof Load Stability
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Solution Overview
Problem
The challenge lies in efficiently loading and unloading large or long objects onto a vehicle's roof without excessive exertion and ensuring load stability, particularly when objects overhang, risking damage or personal injury and attracting law enforcement attention due to potential unsafe driving situations.
Innovation Solution
A hitch-mounted telescopic rack with adjustable rollers allows for angled movement and support of objects, enabling easier loading and unloading by positioning the rollers below the vehicle's roof to guide the object's front portion onto the roof and then extending to support the rear overhanging portion, reducing operator strain and enhancing stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If objects are placed directly upon the automotive vehicle's top, then the loading process requires considerable exertion and effort, but the object can be positioned on the vehicle top
Solution Approach 1:
A telescopic rack with rollers serves as an intermediary device between the ground and the vehicle top. The rollers contact the object and provide a mechanical advantage system that reduces the force required by the operator to move the object onto the vehicle top, transforming a difficult direct lift into a controlled rolling motion.
Solution Approach 2:
The rack is designed with telescopic capability, allowing it to dynamically adjust its length and position. During loading, the rack extends to reach the object; during transport, it retracts to a compact position. This dynamic adjustment optimizes the loading mechanism for different operational phases, improving ease of operation.
2Productivity
If the rear portion of the object overhangs from the vehicle top, then the object can be transported, but the load stability deteriorates at high speeds due to wind pressure
Solution Approach 1:
The telescopic rack performs multiple functions: it serves as a loading mechanism with rollers during the loading phase, and then transforms into a support structure during transport. By extending to support the overhanging rear portion of the object, it provides stability that would otherwise be absent, allowing both productivity and stability requirements to be met.
3Stability of the object's composition
If a telescopic rack is extended to support overhanging objects, then load stability is improved, but the device complexity increases
Solution Approach 1:
The rack employs a telescopic design where one tube is nested within another, allowing the structure to extend and retract. This nesting mechanism provides the necessary extension capability to support overhanging loads while maintaining a compact form when not in use, balancing stability requirements with structural simplicity.
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 solution significantly reduces operator exertion, stabilizes the load, and prevents overhanging objects from shifting during transport, ensuring safer and more efficient loading and unloading processes.
Implementation Method 1
one or more rollers...to move an object relative to a rear edge of a top of the automotive vehicle
Data Source
AI summary
One possible embodiment of the invention could be a hitch-mounted telescopic rack and its operation, the rack could be comprised of a vertical telescopic tube assembly having an inner tube movably received within a hollow outer tube, the hollow outer tube having a hitch attachment end while the inner tube has an attachment end that connects to a top tube assembly that movably supports one or more rollers perpendicularly to the vertical telescopic tube assembly; wherein the hitch attachment end is reversibly received by a trailer hitch of an automotive vehicle to vertically orient the vertical telescopic tube assembly and place the rollers in a horizontal position distal from the trailer hitch, the one or more rollers moving an object relative to a rear edge of a top of the automotive vehicle as well as supporting the rear overhanging portion of the object that is placed on the top.