Agricultural Ground Roller Pneumatic Pressure Equalization
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Solution Overview
Problem
Existing agricultural soil rollers are complex and costly, making it difficult to achieve uniform soil compaction and adapt to uneven ground surfaces efficiently.
Innovation Solution
The soil roller features a pressure equalization system connecting individual tire elements via air-filled lines, ensuring consistent air pressure across all tire elements, with pressure-limiting valves to maintain minimum pressure and protect the connecting lines by routing them through the axle shaft or holding arms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If individual tire elements are suspended with rockers on a frame, then the tire elements can adapt very well to uneven ground surfaces, but the suspension structure becomes relatively complex and expensive
Solution Approach 1:
The patent replaces the complex mechanical rocker suspension system with a pneumatic pressure equalization system. The tire elements are rigidly mounted on the axle and connected via air lines to a common air supply, allowing air pressure to equalize and enable adaptation to ground contours without mechanical rockers. This substitutes mechanical complexity with pneumatic simplicity while maintaining adaptability.
Solution Approach 2:
The patent uses a pneumatic system with air lines connecting all tire elements to a common air supply. This pneumatic connection allows pressure equalization across all tires, enabling them to adapt to ground surfaces through pressure distribution rather than mechanical suspension. The pneumatic system provides both structural support and adaptive functionality.
2Strength
If air pressure is increased in tire elements to maintain structural integrity, then the tire sidewalls remain attached to rims, but the ability to adapt to ground contours is reduced
Solution Approach 1:
The patent uses a pneumatic pressure equalization system where all tire elements are connected via air lines to a common air supply. This allows the system to maintain sufficient air pressure for structural integrity while distributing pressure uniformly across all tires. The pneumatic system enables both strength maintenance and ground adaptation through pressure distribution, resolving the contradiction between these two requirements.
3Productivity
If the ground roller operates at high driving speeds, then productivity increases, but uniform ground pressure becomes difficult to maintain on uneven surfaces
Solution Approach 1:
The patent employs a pneumatic pressure equalization system that automatically distributes air pressure uniformly across all tire elements. This pneumatic system maintains consistent ground pressure even at high driving speeds and on uneven surfaces, as the air pressure equalizes dynamically across all connected tires. The system decouples speed from pressure uniformity, allowing high productivity without sacrificing compaction quality.
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
This design allows for efficient adaptation to ground contours with uniform pressure, enabling high driving speeds and preventing tire detachment, while simplifying the structure and reducing costs.
Implementation Method 1
air can be exchanged between the individual tire elements in the manner of a pressure equalization system for the purpose of adapting the tire elements to the ground surface. There is always more or less the same air pressure in each tire
Data Source
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AI summary
Land roller has several rubber tire parts arranged on an axle shaft which roll over the ground and are pressurized by air. Rubber tire parts have parts which can be filled with air. The parts filled with air belonging to individual tire parts are connected to each other in the manner of a pressure compensating system via connection piping. They are attached to a pressure regulating system. The connection piping lies protected between each individual tire part and is at least partly fed through the axle shaft. THe tire parts have pressure limiting valves, which are in turn connected to the air fillable parts.