Soil Aeration Device with Adjustable Reduction Gearing
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Solution Overview
Problem
Existing soil aeration devices are limited in their ability to adjust the spacing of holes made in the soil, as they require a transfer gearbox that occupies space and causes stress on bearings due to transverse forces, making it difficult to adapt to different ground types and aeration requirements.
Innovation Solution
Incorporating a reduction gearing system with adjustable transmission ratios, which allows for varying hole distances and includes features like CVT gearing, pinion gearing, and a slip clutch to ensure easy replacement and continuous ratio adjustment, reducing the need for a transfer gearbox and minimizing stress on bearings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a transfer gearbox is used to adjust hole distances, then adaptability to different grounds is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent removes the transfer gearbox from the system entirely. Instead of using a complex transfer gearbox to adjust hole distances, the invention extracts this function and achieves it through a simpler arrangement of support arms with variable lengths and adjustable positions, eliminating the need for the problematic transfer gearbox component
Solution Approach 2:
The patent implements dynamic adjustability by making the support arms variable in length and allowing them to be positioned at different locations on the machine frame. This dynamic configuration enables hole distance adjustment without requiring a complex transfer gearbox, as the support arms can be repositioned to achieve different operational parameters
2Manufacturing precision
If bent pushrods are used to achieve regular hole distances, then manufacturing precision is improved, but reliability deteriorates due to increased stress on bearings
Solution Approach 1:
The patent makes the pushrods extendable and retractable rather than permanently bent. This allows the pushrod length to be dynamically adjusted to achieve the correct geometry for uniform hole distances, eliminating the need for bent pushrods that create transverse forces and bearing stress
Solution Approach 2:
The patent changes the parameter of pushrod geometry from fixed bent shapes to variable straight configurations. By allowing the pushrod length to be adjusted, the system achieves the necessary geometric relationships for uniform hole spacing without introducing bending moments that would compromise bearing reliability
3Device complexity
If fixed support arm lengths are used, then device complexity is reduced, but adaptability to different grounds deteriorates
Solution Approach 1:
The patent implements variable length support arms that can be adjusted to different configurations. This dynamic feature allows the same device to adapt to different ground types and hole distance requirements without increasing overall device complexity, as the variability is achieved through adjustable mechanisms rather than multiple fixed components
Data Source
AI summary
A movable soil aeration device with a machine frame, a main input shaft for connection to a drive, an output shaft, preferably a crankshaft, coupled to the main input shaft via a reduction gearing, in which the output shaft can move at least one piercing tool up and down, The piercing tool can be pushed into the soil and be pulled therefrom. Different transmission ratios can be set at the reduction gearing.