Modular Tiller with Dual-Radius Blades for Variable Trenching
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Solution Overview
Problem
Conventional rotary garden tillers are cumbersome, difficult to operate, and require frequent replacement of tines, limiting their ability to create trenches or bury cables of varying sizes and shapes due to their large size and inaccessible tine locations.
Innovation Solution
A lightweight tiller with two removably mountable blades, each with multiple tines of different radii, and a modular design allowing for easy replacement and configuration to create trenches or lay cables, featuring a motor-driven shaft and adjustable blade guards for various trenching and edging operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional rotary garden tillers are used, then they can break and till soil, but they are difficult to operate and require frequent replacement of tines
Solution Approach 1:
The tiller is divided into modular components including a handle assembly, platform, wheel assembly, and motor assembly that can be easily separated and reconfigured. This segmentation allows the device to be stored in a compact configuration and simplifies maintenance operations.
Solution Approach 2:
The tiller is designed with universal functionality to perform multiple gardening tasks including breaking soil, mulching, digging trenches, and edging. The motor-driven shaft can accept various attachments to accomplish different functions with a single device.
2Ease of repair
If conventional tillers have tines located within an interior portion, then they can till soil effectively, but the tines are not easily accessible for replacement
Solution Approach 1:
The tine assembly is segmented as a separate removable component that can be easily detached from the motor-driven shaft. This allows users to replace worn tines without disassembling the entire tiller mechanism, significantly improving maintenance ease.
Solution Approach 2:
The tiller is designed to enable users to perform their own maintenance and repairs without requiring specialized tools or technical expertise. The removable tine assembly and modular construction allow end-users to service the device themselves.
3Adaptability or versatility
If conventional tillers use a single style of tine, then the structure is simple, but they are only capable of digging one size and shape of trench
Solution Approach 1:
The motor-driven shaft is designed as a universal mounting interface that can accommodate various tine styles, configurations, and attachments. This allows the same basic tiller structure to perform multiple functions including trenching, edging, mulching, and soil breaking by simply changing the attached components.
Solution Approach 2:
The tiller configuration is made dynamic and adjustable rather than fixed. Users can change the tine arrangement, shaft orientation, and attached components to adapt the device to different gardening tasks and soil conditions, providing versatility without permanently increasing structural complexity.
4Ease of operation
If conventional tillers are large in size, then they have sufficient power for soil breaking, but they are difficult to maneuver and store
Solution Approach 1:
The tiller is segmented into modular assemblies that can be separated for storage and maneuvered through tight spaces. The handle assembly, platform, and wheel assembly can be disconnected to reduce the overall size for storage while maintaining full functionality when assembled for operation.
Solution Approach 2:
The tiller utilizes vertical stacking and compact folding mechanisms to reduce its footprint for storage without compromising the power and working dimensions when in use. The handle assembly can be folded and the platform compacted to fit in small storage spaces while maintaining adequate power for soil breaking operations.
Data Source
AI summary
A device for creating a trench in a ground surface includes a frame, an axle and a platform. A wheel is mounted to the axle and a motor is mounted to the platform. The motor is configured to rotate a drive shaft. A primary blade is removably mountable to the drive shaft. The primary blade has a first radius measured from a geometric center of the primary hub to a free end of a largest of the at least three primary tines. A second blade is removably mountable to the primary hub. The secondary blade has a second radius measured from a geometric center of the secondary hub to a free end of a largest of the at least three secondary tines. The first radius is greater than the second radius. A blade guard is mounted to the platform and generally covers the primary and secondary blades in an assembled configuration.