Cargo Cycle Powered Lift Mechanism Weight Distribution
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Solution Overview
Problem
Existing cargo-carrying cycles are heavy and require strong, heavy frames due to the placement of cargo in front of rear wheels, leading to steering challenges and inefficient weight distribution, even with electric power assistance.
Innovation Solution
A cycle design with a U-shaped rear section and powered lifting means along the side members, allowing cargo to be lifted and lowered relative to the rear wheels, distributing weight more evenly and improving balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cargo is placed in front of rear wheels to enable lifting, then cargo loading capability is improved, but cycle frame weight increases due to required structural strength
Solution Approach 1:
The patent replaces manual cargo loading with an automated mechanical lifting system. A powered lift mechanism with motor, winch, and cable assembly automatically raises cargo onto the cycle platform, eliminating the need for heavy manual handling and reducing the structural weight requirements compared to purely manual loading systems.
Solution Approach 2:
The patent employs a dynamic lifting system where the cargo platform can be raised and lowered on demand. The lift mechanism includes movable components that adjust the platform height, allowing flexible cargo loading and unloading while distributing weight dynamically rather than requiring static heavy support structures.
2Ease of operation
If powered lifting means is added to enable automated cargo loading, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The lift mechanism is designed to be self-regulating with automatic cable tensioning and platform positioning. The system includes self-latching mechanisms and automatic reverse-rotation prevention features that eliminate the need for complex control systems, operators, or multiple safety devices while maintaining ease of operation.
Solution Approach 2:
The powered lifting mechanism serves multiple functions: it lifts cargo onto the platform, positions the platform at optimal height, and can be integrated with the cycle's steering and braking systems. This multi-functionality reduces the need for separate dedicated components, simplifying the overall device complexity.
3Strength
If strong heavy frame is used to support lifting mechanism and cargo, then strength is improved, but weight of moving object increases
Solution Approach 1:
The patent applies local reinforcement only where structurally necessary. The frame features localized strengthening at the platform mounting points and lift mechanism attachment areas, while the rest of the frame structure uses lighter gauge materials. This selective reinforcement maintains required strength while minimizing overall frame weight.
Solution Approach 2:
The frame construction utilizes composite material strategies, combining different materials with complementary properties. The frame may use aluminum alloys with high strength-to-weight ratios, or incorporate reinforcement ribs and gussets made from high-strength materials only where needed, rather than uniformly heavy construction throughout the entire frame.
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
The solution enables efficient loading and unloading of cargo without manual effort, supports various cargo types, and allows for a lighter, more balanced cycle construction.
Implementation Method 1
powered lifting means provided along the side members and including a movable lifting apparatus, the lifting means being configured to move the movable lifting apparatus upwardly and/or downwardly with respect to the U-shaped rear section for engaging with and lifting cargo positioned in the space
Data Source
AI summary
A cycle for carrying cargo comprising a cycle frame having a front section mounting a steerable front wheel and a U-shaped rear section having a head member and side members with at least one rear wheel being mounted to each side member. A space can be disposed between the side members and rear wheels. A powered lifting means can be provided along the side members and include a movable lifting apparatus. The lifting means can be configured to move the movable lifting apparatus upwardly and/or downwardly with respect to the U-shaped rear section for engaging with and lifting cargo positioned in the space.