Dolly Cart Assembly With Multi-Point Handles For Obstacle Navigation
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Solution Overview
Problem
Conventional hand trucks are inadequate for transporting heavy or unwieldy objects, especially over obstacles and require precise placement, which is difficult to achieve.
Innovation Solution
A dolly transport system with a dolly cart assembly featuring multiple supporting locations and wheel sets that allow for free-standing, inclined orientation, enabling multiple users to manipulate and navigate objects effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a conventional hand truck is used to transport objects, then the structure is simple and easy to manufacture, but it cannot handle heavy or unwieldy objects and fails to navigate obstacles effectively
Solution Approach 1:
The dolly transport system is divided into multiple independent components: a dolly frame, a support platform, multiple wheel sets with different pivot axes, and multiple gripping handles at different locations. This segmentation allows each component to perform its specific function independently, enabling the system to handle heavy objects and navigate obstacles while maintaining manageable complexity through modular design
Solution Approach 2:
The invention introduces multiple gripping handles positioned at different locations and heights on the dolly frame, adding spatial dimensionality to the control interface. This allows multiple users to apply forces from different directions and heights, transforming a single-dimension pushing mechanism into a multi-dimensional control system that can manipulate heavy loads more effectively
2Measurement precision
If a conventional hand truck is used, then the device is simple to operate, but precise placement is difficult and navigation over uneven terrain is poor
Solution Approach 1:
By positioning gripping handles at multiple locations and heights on the dolly frame, the system enables precise control through multi-point force application. Users can grip at different heights and positions to achieve precise placement, while the underlying wheel and frame structure maintains operational simplicity through its free-standing inclined design
Solution Approach 2:
The dolly frame is designed to stand in a free-standing inclined orientation, changing the geometric parameters of the system. This inclined configuration, combined with multiple wheel sets having different pivot axes, allows the system to adapt to uneven terrain while maintaining stability and precision for placement
3Adaptability or versatility
If a conventional hand truck is used to navigate obstacles, then the structure remains simple, but the ability to overcome door thresholds or steps is limited
Solution Approach 1:
The wheel sets are designed with different pivot axes that allow dynamic adjustment during movement. The first wheel set pivots about a first pivot axis while the second wheel set pivots about a second pivot axis, enabling the wheels to adapt dynamically to obstacles like door thresholds and steps, providing superior obstacle navigation capability
Solution Approach 2:
The invention positions wheel sets at different locations along the dolly frame with different pivot axes, adding spatial complexity to the wheel mechanism. This multi-dimensional wheel arrangement allows the system to navigate obstacles effectively by distributing contact points and pivot locations across different spatial planes
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 stable and precise transport of heavy objects over obstacles by distributing the load and allowing multiple users to apply forces for directional control, reducing the risk of damage and improving navigation.
Implementation Method 1
The first wheel set and the second wheel set contact a ground surface to support the dolly frame in a free-standing, inclined orientation
Implementation Method 2
The first wheel set and the second wheel set contact a ground surface to support the dolly frame in a free-standing, inclined orientation, and the first wheel set pivot axis and the second wheel set pivot axis are located in different horizontal planes
Data Source
AI summary
A dolly transport system includes a dolly cart assembly having a dolly frame having at least one gripping handle, at least one lifting fork extending from the dolly frame to a distal end, and a handle grip structure located at the distal end of the lifting fork. The dolly cart assembly includes a first supporting location that includes the gripping handle and a second supporting location remote from the first supporting location that includes the handle grip structure.