Agricultural Roller Tire Profile for Self-Cleaning and Anti-Shifting
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Solution Overview
Problem
Current furrow rollers with deformable tires tend to deteriorate prematurely, leading to reduced effectiveness and increased clogging, especially under specific working conditions, due to tire shifting and premature wear.
Innovation Solution
The design features tires with a convex tread and inclined sidewalls that deform to facilitate automatic cleaning and tightening against neighboring tires, reducing stress and debris accumulation, while reinforcements in the sole enhance stability and grip, and a specific profile allows for deeper furrow work without damaging the soil.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If tires are made deformable to facilitate cleaning, then cleaning efficiency is improved, but tire stability and resistance to shifting deteriorate
Solution Approach 1:
The tire structure is divided into zones with different properties: the sidewalls have inflection zones for deformation and cleaning, while the sole has reinforcement elements for stability. This local differentiation allows the tire to be deformable where needed (sidewalls) while maintaining stability where required (sole and mounting interface).
Solution Approach 2:
The tire combines materials with different characteristics: elastomeric materials for the deformable sidewalls and reinforcement elements (such as rigid inserts or different material compositions) in the sole and mounting areas. This composite structure enables simultaneous deformation capability and positional stability.
2Ease of operation
If tires deform sufficiently during rolling, then automatic cleaning is improved, but premature wear and clogging increase
Solution Approach 1:
The deformation is localized to the sidewalls through inflection zones, while the tread and sole maintain their structural integrity. This localized deformation enables cleaning without subjecting the entire tire to excessive stress that would cause premature wear.
Solution Approach 2:
The inflection zones are pre-designed to control the deformation pattern, cushioning the stress that would otherwise concentrate on vulnerable areas. This predetermined deformation path prevents random folding and reduces wear on critical components.
3Ease of operation
If cleaning tools are positioned between tires, then cleaning effectiveness is improved, but tire shifting and damage to neighboring tires occur
Solution Approach 1:
The tire performs its own cleaning through controlled deformation during rotation. The inflection zones cause the sidewalls to fold and unfold in a way that naturally removes accumulated debris, eliminating the need for external cleaning tools that could damage adjacent tires.
Solution Approach 2:
The cleaning function is extracted from the tire structure itself rather than requiring separate cleaning tools. The deformation mechanism inherently provides self-cleaning capability, removing the harmful interaction between cleaning tools and tires.
4Ease of operation
If sidewalls have inflection zones for deformation, then cleaning capability is improved, but force transmission from tread to sole is impaired
Solution Approach 1:
The inflection zones are strategically positioned in the sidewalls where deformation is needed for cleaning, while the load-bearing paths from tread to sole are maintained through reinforcement elements and optimized geometry. This local differentiation allows simultaneous deformation capability and force transmission.
Solution Approach 2:
The sidewall structure combines flexible regions (inflection zones) for deformation with stiffer regions for force transmission. This composite construction enables the sidewall to both clean effectively during rotation and transmit loads from the tread to the sole.
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 extends the tool's effectiveness and lifespan by minimizing tire shifting, reducing clogging, and improving cleaning efficiency, resulting in longer-lasting performance and reduced debris accumulation.
Implementation Method 1
The tire casing deforms in a way that allows for automatic cleaning. The deformation of this casing is such that it contributes to the tightening of this tire against the neighboring tires.
Data Source
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AI summary
An agricultural implement for use in forming furrows comprises a generally cylindrical support (101) and a plurality of tires (1). Each tire (1) comprises a sole (3) by means of which the tire (1) is mounted on the support (101), a tread (5) opposite the sole (3) and two sidewalls (11 , 13) connecting the tread (5) to the sole (3). The sole (3), the tread (5) and the sidewalls (11, 13) together form a deformable envelope (6). The tread (5) of at least one of the plurality of tires (1) has a generally domed shape. The sidewalls (11, 13) of this tire (1) are generally inclined radially. The curved shape of the tread (5) and the inclination of the sidewalls (11, 13) are such that the deformation of the casing (6) urges the sole (3) axially outwards.