Adjustable Subsoiler Leg Assembly for Variable Soil Conditions
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Solution Overview
Problem
Subsoilers face challenges in achieving optimal balance between ground penetration and lift across varying soil types, moisture levels, and tilling portion wear, leading to inefficiencies and increased wear on components.
Innovation Solution
An adjustable leg assembly for a subsoiler that allows the angle of attack of the ground tilling portion to be adjusted, optimizing tilling efficiency across different ground conditions and extending the useful lifespan of worn tilling portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed angle of attack is used for the ground tilling portion, then the subsoiler structure is simple and easy to manufacture, but the tilling effectiveness is reduced when operating in varied ground conditions
Solution Approach 1:
The leg assembly incorporates an adjustable mechanism that allows the angle of attack to be dynamically changed based on ground conditions. The leg can be positioned at multiple fixed angles (e.g., 0°, 15°, 30°) relative to the horizontal, enabling adaptation to varying soil types, moisture levels, and wear conditions without requiring a completely new design.
Solution Approach 2:
The invention changes the geometric parameter of the leg's angle of attack to optimize performance. By adjusting the angle at which the ground tilling portion contacts the soil, the system can compensate for wear, adapt to different soil conditions, and maintain effective subsoiling without increasing overall structural complexity.
2Force
If a higher angle of attack is used to improve penetration in hard ground, then ground penetration is enhanced, but wear on the tilling portion and leg assembly increases significantly
Solution Approach 1:
The adjustable leg assembly allows operators to dynamically adjust the angle of attack based on ground hardness. In hard ground conditions, the leg can be positioned at a higher angle to improve penetration. When ground conditions soften or after initial wear occurs, the angle can be reduced to minimize further wear, thereby extending the service life of the tilling portion.
Solution Approach 2:
By changing the angle parameter of the leg assembly, the system optimizes the balance between penetration force and wear rate. A higher angle increases the vertical component of force for better penetration, while a lower angle reduces the horizontal scraping action that causes wear. This parameter adjustment allows optimization for specific operating conditions.
3Force
If the angle of attack is increased to improve penetration, then ground entry is enhanced, but lift and surface break-up increase causing an overly disturbed surface
Solution Approach 1:
The angle of attack is adjusted as a controllable parameter to balance penetration and surface disturbance. By optimizing this angle, the system achieves sufficient ground entry while minimizing the lateral forces that cause excessive lift and surface break-up. This parameter optimization allows effective subsoiling with reduced harmful surface effects.
4Productivity
If a compromised fixed angle is used to balance penetration and lift, then the subsoiler can operate in various conditions, but optimal performance is not achieved across all ground types and wear levels
Solution Approach 1:
Rather than using a single fixed compromised angle, the leg assembly provides multiple adjustable angle positions. This dynamic adjustment capability allows operators to optimize performance for specific ground conditions, soil types, and wear levels, thereby achieving higher productivity across varied conditions compared to a fixed-angle design.
Data Source
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AI summary
A leg assembly 10 for a subsoiler. The leg assembly comprises a leg 11 and a ground tilling portion 12. The leg 11 is adjustably mounted to a mounting section 13 of the subsoiler via an adjustment arrangement 14. The leg 11 is adjustable relative to the mounting section 13 of the subsoiler such that the angle of attack of the ground tilling portion 12 relative to the ground is adjustable.