Retaining-Frame Cart for Vertical Door Transport Over Rough Terrain
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Solution Overview
Problem
Transporting planar items such as doors on construction sites with rough terrain is challenging and inconvenient due to the lack of efficient and stable support systems.
Innovation Solution
A cart with a retaining frame assembly and wheel assembly, featuring a swivel front wheel and larger rear wheels, designed to support and maneuver doors vertically, allowing easy maneuverability over various terrains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If a door is transported horizontally on a construction site, then it occupies more space and is harder to maneuver, but transporting it vertically reduces footprint and facilitates installation
Solution Approach 1:
The cart employs a swivel front wheel assembly that can rotate 360 degrees, allowing the cart to dynamically adapt its orientation during transport. This dynamic wheel configuration enables easy maneuverability when carrying doors in a vertical position, reducing the transport footprint while maintaining operational ease through the swivel mechanism's flexibility
Solution Approach 2:
The cart is specifically designed to transport doors in a vertical dimension rather than horizontal. By rotating the door 90 degrees from its conventional horizontal transport orientation to a vertical position on the cart, the transport footprint is significantly reduced while the vertical orientation naturally facilitates installation at the destination
2Stability of the object's composition
If larger rear wheels are used, then stability and terrain capability are improved, but front wheel maneuverability may be compromised
Solution Approach 1:
The cart applies different wheel characteristics to different locations: the rear wheels are larger in diameter to provide stability and terrain capability, while the front wheel is a smaller swivel caster to provide maneuverability. This local differentiation of wheel properties allows each wheel to optimize its function for its specific position on the cart
Solution Approach 2:
The cart features an asymmetric wheel configuration where the rear wheels differ from the front wheel in size and function. The rear wheels are larger and fixed for stability, while the front wheel is smaller and swivel-mounted for steering, creating an asymmetric arrangement that balances both stability and maneuverability requirements
3Productivity
If a retaining frame assembly is used to hold the door vertically, then transport efficiency is improved, but the device complexity increases
Solution Approach 1:
The retaining frame assembly is segmented into multiple independent components: a base support frame, vertical support members, and horizontal support members. This segmentation allows each component to perform a specific function while keeping the overall structure manageable and relatively simple, yet effective at maintaining door stability during vertical transport
Data Source
AI summary
Disclosed is a cart comprising a retaining frame assembly configured to support and retain a door in a vertical position, the retaining frame assembly comprising a base support frame and side support members coupled to the base support frame. In certain embodiments, the cart may further comprise a wheel assembly including a front wheel and a rear wheel assembly, wherein the front wheel assembly comprises a single swivel wheel coupled to a bottom side of the retaining frame assembly, wherein the rear wheel assembly comprises a pair of wheels coupled to opposing outer sides of the retaining frame assembly, and wherein the wheels of the rear wheel assembly are larger than the wheel of the front wheel assembly.