Pivoting Hand Truck Structure for Easier Tilting and Stability
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Solution Overview
Problem
Conventional hand trucks face difficulties in maneuvering heavy or bulky loads, stability over uneven surfaces, traversing obstacles, and ergonomic handling, with limitations in convertibility, weight, and manufacturing costs.
Innovation Solution
The invention includes improved toe plate support structures, modular design with replaceable parts, ergonomic handle orientations, and adjustable heights, along with enhanced materials and locking mechanisms to facilitate easier tilting, obstacle traversal, and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the hand truck is designed with a conventional rigid structure to support heavy loads, then load-bearing capacity is improved, but the difficulty of tilting and maneuvering increases
Solution Approach 1:
The hand truck body is divided into a front section and rear section that can pivot relative to each other about a pivot axis. This segmentation allows the front section to be tilted independently to initiate movement, reducing the force required to overcome static friction and make the hand truck easier to maneuver while maintaining overall structural strength.
2Stability of the object's composition
If the hand truck uses a fixed rigid structure to maintain stability, then stability is improved, but the ability to traverse obstacles and adapt to different surfaces deteriorates
Solution Approach 1:
The hand truck incorporates a dynamic front section that can pivot relative to the rear section, allowing the device to adapt its configuration to different terrain conditions. This dynamic capability enables the front section to lift over obstacles while the rear maintains stability, and to adjust to uneven surfaces, thereby improving versatility without compromising overall stability.
3Reliability
If the hand truck is designed with heavy-duty materials and robust construction to handle bulky loads, then strength and reliability are improved, but the weight of the device increases
Solution Approach 1:
By dividing the hand truck into a front section and rear section that can pivot relative to each other, the design allows for optimized material distribution. The front section can be lighter since it moves independently, while the rear section maintains robust construction for stability and load support, thereby reducing overall device weight while preserving reliability for handling bulky loads.
Data Source
AI summary
Material handling devices are disclosed. Specifically disclosed are hand truck structures such as toe plates, wheel supports, handles, and lock mechanisms, as well as methods of construction and manufacturing. Toe plate support structure and geometry as well as manufacturing methods improve strength and functionality. Handle designs to improve maneuverability as well as comfort while using a hand truck are also disclosed.