Non-Directional Irrigation Tire Tread for Reverse Traction
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Solution Overview
Problem
Conventional irrigation tires are directional, leading to uncomfortable and turbulent movement when reversed, require multiple mounting techniques, and can damage the ground due to their design and materials. They also lack durability and resistance to weathering elements.
Innovation Solution
A non-directional pneumatic tire with a tread pattern featuring longitudinal protrusions parallel to the axis and a circumferential protrusion, designed to provide uniform traction in both directions. The tire includes an anti-weathering agent and a tread durometer of less than 55 shore A hardness to enhance durability and resistance to elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional directional tires are used on irrigation systems, then the tires provide adequate traction in the forward direction, but they cause uncomfortable and turbulent movement when the irrigation system moves in reverse direction
Solution Approach 1:
The patent applies asymmetry in reverse by using symmetry - the tread pattern features longitudinal grooves and lugs that are symmetrically arranged around the tire's circumference, allowing the tire to provide consistent traction and smooth movement regardless of rotation direction. This symmetrical design eliminates the directional dependency of conventional tires.
Solution Approach 2:
Instead of designing the tread pattern to optimize for forward motion only, the patent inverts the conventional approach by creating a tread pattern that performs equally well in both forward and reverse directions. The longitudinal grooves and lugs are configured to maintain consistent contact with the ground regardless of rotation direction.
2Ease of manufacture
If conventional directional tires are used on irrigation systems, then the tires can be mounted with a specific orientation, but they require multiple mounting techniques and proper alignment with the wheel
Solution Approach 1:
The tread pattern is designed to be functionally universal in both rotational directions. The symmetrical arrangement of longitudinal grooves and lugs means the tire can be mounted on either side of the wheel with the same orientation and will perform equally well in both forward and reverse motion, eliminating the need for different mounting techniques for different sides of the vehicle.
Solution Approach 2:
The patent extracts the directional dependency from the tire design by removing the asymmetric features that would require specific mounting orientations. The resulting symmetrical tread pattern can be mounted in any orientation without affecting performance, simplifying the mounting process.
3Strength
If conventional irrigation tires with solid rubber are used, then the tires provide structural support, but they damage the ground upon which the irrigation system travels
Solution Approach 1:
The patent employs a porous or open-tread design where longitudinal grooves create voids in the tread pattern. This allows the tire to maintain structural support through its rigid framework while the gaps reduce ground contact pressure and minimize damage to the terrain, particularly important for irrigation systems operating on agricultural fields.
Solution Approach 2:
The continuous rubber surface is segmented into discrete lugs separated by longitudinal grooves. This segmentation reduces the overall contact area with the ground while maintaining structural integrity through the distributed lug structure, thereby reducing ground damage.
4Reliability
If conventional tires without weathering protection are used, then the tire composition is simpler, but the tires lack durability and resistance to weathering elements
Solution Approach 1:
The patent enhances the tire rubber with composite materials including antioxidants and UV stabilizers. These additives create a composite rubber composition that resists degradation from oxidation, ultraviolet radiation, and other weathering elements, significantly improving tire durability and service life.
Solution Approach 2:
The patent incorporates protective additives into the rubber compound before manufacturing. These antioxidants and UV stabilizers provide beforehand protection against weathering damage, preventing degradation before it occurs and extending the tire's useful life in outdoor irrigation applications.
Data Source
AI summary
A non directional pneumatic tire is provided for an agricultural irrigation system. The tire includes first and second side walls and a radially outer wall defining an internal inflation chamber. A non directional tread pattern is defined on the tire and includes a plurality of longitudinal protrusions positioned substantially parallel to a rotational axis of the tire. The longitudinal protrusions are arranged in first and second rows extending from the first and second side walls toward and across the equatorial plane of the tire. The longitudinal protrusions of the first and second rows circumferentially alternate with each other and there is a circumferential spacing between adjacent longitudinal protrusions at the equatorial plane so that no portion of one longitudinal protrusion circumferentially coincides with or overlaps another.