Expandable Dolly with Adjustable Frame and Pin Lock
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Solution Overview
Problem
Existing dollies are limited in size and shape, requiring multiple dollies for objects of varying sizes, which increases storage space and transportation costs, and lacks adaptability for objects of different shapes and sizes.
Innovation Solution
A modular dolly design featuring adjustable frames with elongated bars and pins, platforms with stabilizing posts and straps, and a crank assembly that allows for expansion and contraction to accommodate objects of various sizes, enabling secure transportation and easy assembly/disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple dollies of different sizes are used to transport objects of varying sizes, then the adaptability to different object sizes is improved, but the storage space required and transportation costs increase
Solution Approach 1:
The dolly is divided into modular components including adjustable frames with elongated bars, platforms, pins, straps, and stabilizing posts. These segments can be reconfigured and combined in different arrangements to create dollies of various sizes, allowing a single set of components to replace multiple fixed-size dollies and reduce storage requirements.
Solution Approach 2:
The dolly features dynamically adjustable dimensions through elongated bars with multiple hole positions and removable pins, allowing the frame width and platform positions to be changed based on the size of the object being transported. This dynamic adjustability enables one dolly to perform the function of multiple fixed-size dollies.
2Adaptability or versatility
If multiple dollies of different sizes are used to transport objects of varying sizes, then the adaptability to different object sizes is improved, but the overall transportation cost increases
Solution Approach 1:
The dolly design provides universal functionality across multiple size configurations using the same set of modular components. The adjustable frames, platforms, and securing mechanisms can be arranged to accommodate small, medium, and large objects, making a single dolly system replaceable for multiple specialized dollies and reducing the total quantity needed.
Solution Approach 2:
By segmenting the dolly into reusable modular components, the system allows one set of parts to serve multiple purposes and size requirements, thereby reducing the total number of complete dolly units that would otherwise be needed to handle various object sizes.
3Adaptability or versatility
If the dolly is designed to be expandable to fit objects of different sizes, then the versatility is improved, but the device complexity increases
Solution Approach 1:
The dolly is segmented into standardized modular components with uniform connection interfaces. The frames consist of elongated bars with regularly spaced holes, and connections are made through simple pins that insert into aligned holes. This segmentation with standardized interfaces simplifies the adjustment process compared to complex mechanical systems, as users only need to insert or remove pins at different positions.
Solution Approach 2:
The dolly achieves versatility through parameter changes—specifically, changing the positions of platforms and adjusting frame widths by selecting different hole positions on the elongated bars. These parameter adjustments are accomplished through simple pin insertion rather than complex mechanisms, maintaining ease of use while providing adaptability.
Data Source
AI summary
A dolly that is expandable and capable of raising and transporting small or large objects is disclosed. The dolly includes a pair of frames facing each other. The dolly includes a platform positioned over each the frames. The dolly includes a bar receiving section extending from each of the frames. The bar receiving section includes a first hole at its distal end. The dolly includes an elongated bar comprising second holes. The dolly includes pins. The elongated bar inserts through the bar receiving sections such that the second holes align with the first holes in the bar receiving sections and adjust the distance between of the frames. The pins insert through the first holes and the second holes and lock the distance between of the frames. The platforms receive an object such as container, piano, packaging box, etc. for transportation.