Leaf Hauling Device with Collapsible Tarp and Wheeled Dolly
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Solution Overview
Problem
Existing methods for collecting and moving large quantities of leaves, such as raking and hauling with wheelbarrows or leaf blowers, are time-consuming and physically demanding, often leading to fatigue and muscle injuries.
Innovation Solution
A lightweight, durable, and easy-to-use leaf collection device featuring a large tarp with retaining hooks and wheels, designed to allow one person to efficiently transport heavy loads of leaves with minimal effort, incorporating aluminum and molded plastic components for stability and quick assembly/disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional methods like wheelbarrows or leaf blowers are used to move leaves, then leaves can be transported, but it requires extended time and significant physical effort leading to fatigue and injury
Solution Approach 1:
The device segments the leaf transport task into two parts: a large stationary collection area (tarp spread on ground) and a separate transport mechanism (dolly with wheels). This allows leaves to be collected in bulk without repeated lifting, and the dolly handles the heavy lifting and transport, reducing physical effort while maintaining high productivity
Solution Approach 2:
The dolly acts as an intermediary between the leaf collection tarp and the final destination. Instead of directly carrying or dragging leaves, the user attaches the tarp to the dolly frame, which then serves as the mediating transport device. This intermediary handles the heavy load, eliminating the need for users to muscled tarps over shoulders or manually carry leaves
2Productivity
If a large cart is used to transport leaves in fewer trips, then transport efficiency improves, but the cart becomes heavy and difficult to maneuver
Solution Approach 1:
The device separates the collection function (large tarp providing extensive gathering area) from the transport function (dolly providing wheeled mobility). The tarp can be spread large to collect many leaves in one operation, while the dolly's small wheels provide easy maneuverability. This segmentation allows the system to achieve both large capacity and ease of movement that a single large cart cannot provide
Solution Approach 2:
The dolly frame is designed to be collapsible, transitioning from an extended configuration for loading and transport to a compact configuration for storage and easy maneuvering through tight spaces. The collapsible nature allows the device to adapt its size dynamically, providing large transport capacity when needed while minimizing footprint during storage and navigation
3Ease of manufacture
If a collapsible frame is used to reduce storage space, then storage ease improves, but structural strength may be compromised
Solution Approach 1:
The frame utilizes dynamic characteristics by being collapsible yet maintaining strength during use. When assembled, the frame provides sufficient structural integrity to support heavy leaf loads. When collapsed for storage, it reduces to a compact form. The dynamic transition between states allows the frame to satisfy both strength requirements during operation and storage compactness when not in use
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 the quick and effortless movement of large volumes of leaves, including wet and heavy loads, reducing the risk of injury and improving efficiency by allowing single-handed operation and easy storage.
Implementation Method 1
A torsion spring (8) holds the release lever in position to be 'latched' with the tarp retaining hook.
Implementation Method 2
The wheels (5) are 101.6 millimeters (4 inches) in diameter and made from non-corrosive material.
Data Source
AI summary
This device is intended to provide a quick and easy way for one person to load and transport a relatively large number and weight of tree leaves without a great amount of strain or strength. It's size and configuration allows leaves to be collected on the specially designed tarp which is then hooked to the top of the device, and then easily rolled away with one hand.