Adjustable Dolly Frame for Variable Load Sizes
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Solution Overview
Problem
Current dollies have fixed sizes and shapes, restrictive caster positions, lack efficient weight dispersion, are difficult to stack, and pose contamination risks with wooden materials, especially when transporting sensitive loads.
Innovation Solution
A dolly frame with a rectangular-shaped body that can adjust between retracted and expanded positions, equipped with multiple casters for efficient rolling, capable of stacking, and designed to accommodate tote lids securely, using materials other than wood to prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the dolly frame has a fixed size and shape, then the structure is simple and easy to manufacture, but it cannot accommodate loads of different sizes
Solution Approach 1:
The dolly frame body is divided into multiple components (first component and second component) that can slide relative to each other, allowing the frame to be segmented and reconfigured. This segmentation enables the frame to adjust its perimeter and area to accommodate different load sizes while maintaining a relatively simple overall structure.
Solution Approach 2:
The dolly frame transitions from a static fixed structure to a dynamic adjustable structure. The first and second components can slide with respect to each other, enabling the frame to dynamically change its perimeter and area based on the load requirements, thus improving adaptability without significantly increasing complexity.
2Stability of the object's composition
If the dolly frame has a central through hole, then the structure is simple and open, but it does not provide proper weight dispersion for loads
Solution Approach 1:
The frame structure is segmented into multiple components that can be positioned to provide support at critical load-bearing points. This segmentation allows for proper weight dispersion across the frame structure while maintaining an open central area for load placement, achieving both stability and structural simplicity.
3Object-affected harmful factors
If the dolly frame uses wooden material, then it is simple to manufacture and cost-effective, but it presents contamination issues for sensitive loads
Solution Approach 1:
The patent employs non-wooden materials (such as metal or plastic components) to construct the dolly frame, eliminating the contamination risks associated with wooden materials. This material substitution maintains ease of manufacture through standardized production processes while significantly reducing harmful contamination factors for sensitive loads.
4Speed
If the dolly frame has restrictive caster positions, then the structure is simple, but it does not allow efficient rolling on surfaces
Solution Approach 1:
The caster configuration is made dynamic rather than fixed. The casters are positioned to work in conjunction with the sliding components, allowing the dolly frame to efficiently roll on surfaces while adapting to different configurations. This dynamic arrangement improves rolling efficiency without significantly increasing structural complexity.
Data Source
AI summary
A dolly frame includes a rectangular-shaped body having a first component and a second component coupled to the first component. The body movable between a retracted position and an expanded position. The dolly frame also includes a plurality of casters coupled to a first side of the body and configured to allow the body to roll on a surface. When the body moves from the retracted position to the expanded position, the first component slides with respect to the second component, thereby increasing a perimeter of the body.