Portable Trailer Jacking System with Nesting Brackets
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Solution Overview
Problem
Existing systems for raising and lowering utility trailers, such as boat trailers, are inefficient and often require permanent structures that limit ground clearance and add weight, making it difficult to perform maintenance or repairs, especially when a suitable jack is not available.
Innovation Solution
A portable jacking system with a telescoping jack and adjustable mounting brackets that can be quickly attached and detached from the trailer, allowing for lifting at any point and minimizing effort, while also being stowed out of the way when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a permanent jacking structure is mounted to the trailer, then the trailer can be reliably lifted, but the ground clearance is reduced and weight is increased
Solution Approach 1:
The jacking system is divided into separate components: a mounting bracket that attaches to the trailer frame and a telescoping jack that can be stored within or near the bracket. This segmentation allows the trailer to carry minimal jacking equipment during normal operation while providing full lifting capability when needed.
Solution Approach 2:
The telescoping jack is designed to nest within the mounting bracket structure when not in use. The jack's telescoping tubes store compactly inside the bracket housing, eliminating the need for separate storage space and reducing overall system footprint and weight.
2Reliability
If a permanent jacking structure is mounted to the trailer, then the trailer can be reliably lifted, but the ground clearance is reduced
Solution Approach 1:
The mounting bracket is designed with adjustable positioning capabilities, allowing it to be mounted at different locations along the trailer frame. This dynamic positioning enables optimization of ground clearance while maintaining sufficient structural support for reliable lifting operations.
3Ease of operation
If a scissor jack is used that rests on the ground, then the jack can lift the trailer, but the jack height must be sufficient to reach the trailer frame
Solution Approach 1:
The mounting bracket serves as an intermediary structure that transfers the lifting force from the compact telescoping jack directly to the trailer frame. This eliminates the need for the jack to reach from ground level to the frame, as the bracket provides a closer attachment point that the shorter jack can easily reach.
4Reliability
If a bumper jack is used, then the jack can lift the trailer, but the jack may inhibit or prevent the jacking operation
Solution Approach 1:
The system separates the mounting function (bracket) from the lifting function (telescoping jack), allowing each component to be optimized independently. The bracket is positioned to provide clear access to the trailer frame while the jack operates from a compact, non-obtrusive location.
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
Enables quick and efficient maintenance or repair of trailer wheels with existing equipment, improving accessibility and reducing the need for additional weight and permanent structures, thus enhancing operational convenience and safety.
Implementation Method 1
The jack itself involves a pair of telescoping tubes with the wheel attached to the tube having the lesser diameter. A crank raises and lowers the inner tube to situate the tongue of the trailer at the appropriate height.
Data Source
AI summary
A selectively positionable lifting system for a utility trailer, or the like, in which a jacking system is selectively attachable to a strategic position of the utility trailer in order to lift said trailer at the jack point for maintenance and repair purposes, the jacking system being easily removed and stowed when not in use.