Composite Jack Stand Structure for Heavy Load Manual Handling
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Solution Overview
Problem
Existing heavy-duty jack stands are cumbersome and require multiple persons to move safely, posing an injury risk, as they are typically made of heavy metal and lack efficient manual handling solutions for supporting loads up to 30 tonnes in industrial settings.
Innovation Solution
A lightweight jack stand constructed with composite material via pultrusion, featuring reinforcing fibers wound in both clockwise and anticlockwise directions around a tubular post, combined with a metal base and top for enhanced compressive strength and safety, allowing single-person handling and supporting loads up to 30 tonnes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If jack stands are made from heavy metal parts to sustain heavy loads, then load-bearing strength is improved, but weight increases making them cumbersome to move
Solution Approach 1:
The patent applies composite materials consisting of a metal base structure with embedded reinforcing fibers (such as carbon fibers, glass fibers, or aramid fibers) to achieve both high strength and low weight. The composite material provides the necessary load-bearing capacity while significantly reducing the overall weight compared to traditional solid metal construction, enabling single-person handling of jack stands rated for heavy loads.
2Reliability
If multiple persons are used to lift and position jack stands to ensure safety, then safety is improved, but operational complexity and time consumption increase
Solution Approach 1:
The patent reduces the weight of the jack stand through composite material construction and optimized structural design, directly counteracting the gravitational force that makes handling difficult. By reducing the weight to a level that a single person can safely manage, the need for multiple persons is eliminated, simplifying the operational procedure while maintaining safety through controlled, manageable weights.
3Strength
If jack stands are designed to support heavy loads up to 30 tonnes, then load capacity is improved, but structural weight increases
Solution Approach 1:
The patent applies local quality by concentrating reinforcing fibers in specific high-stress regions of the jack stand structure rather than uniformly throughout. The composite material distribution is optimized to provide maximum strength where needed (such as at load-bearing points and connection areas) while keeping other areas lighter, achieving 30-tonne capacity without proportionally increasing overall weight.
Solution Approach 2:
The patent uses composite materials with high strength-to-weight ratio properties to achieve extreme load capacity. The combination of metal matrix with high-strength fibers creates a material that can support 30 tonnes while remaining light enough for manual handling, fundamentally decoupling load capacity from structural weight.
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 enables safe and convenient manual movement of the jack stand while maintaining the ability to support heavy industrial loads, reducing the risk of injury and improving operational efficiency by distributing weight effectively and providing robust compressive strength.
Implementation Method 1
the composite material including reinforcing fibres wound around the post to improve compressive strength, the reinforcing fibres being separately wound in both clock-wise and anticlockwise directions along the post to further improve compressive strength
Implementation Method 2
a post including composite material formed via a pultrusion process
Implementation Method 3
The composite material may include polymeric resin material and high strength fibres
Data Source
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AI summary
The present invention relates to a jack stand. The jack stand includes a base. A post, including composite material, extends from the base. The jack stand also includes a top for topping the post and for engaging with a load. Advantageously, the post may be lightweight (typically less than 12kg) enabling the jack stand to be conveniently moved by a single person without exposing the person to significant risk of injury. The jack stand may be moved as a whole, or in parts.