Finger Wheel Rake Torsion Spring Adjustment for Variable Ground Pressure
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Solution Overview
Problem
Existing finger wheel rakes face challenges in adjusting torsion spring tension to accommodate varying terrain and crop conditions, limiting their effectiveness in maintaining optimal ground pressure and raking efficiency.
Innovation Solution
A torsion spring adjustment assembly with a pivotable tension-setting lever that can be secured to a main frame at multiple positions using a fastener, allowing for adjustable tension settings to optimize ground pressure and raking performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed torsion spring tension is used in the finger wheel rake, then the structure is simple and reliable, but the rake cannot adapt to varying terrain and crop conditions, reducing raking efficiency
Solution Approach 1:
The patent applies the dynamics principle by making the torsion spring tension adjustable through a pivotable lever that can be positioned at multiple locations along an arcuate path. This allows the system to dynamically adapt to varying terrain and crop conditions by changing the spring tension, transforming a static system into a dynamic one that can respond to different operating conditions.
Solution Approach 2:
The patent implements parameter changes by modifying the tension of the torsion spring through the adjustment mechanism. By changing the position of the lever along the arcuate path, the effective length of the spring's lever arm changes, thereby altering the spring tension parameter to optimize ground pressure for different raking conditions.
2Productivity
If the torsion spring tension is made adjustable to optimize ground pressure, then raking efficiency improves, but the adjustment mechanism becomes more complex
Solution Approach 1:
The adjustment mechanism uses a simple pivotable lever that can be easily repositioned along the arcuate path defined by the adjustment plate. This dynamic adjustment capability allows operators to quickly change tension settings to optimize raking efficiency without requiring complex mechanisms, maintaining operational simplicity while improving productivity.
Solution Approach 2:
The adjustment plate features multiple discrete positions along the arcuate path where the lever can be secured using openings and fasteners. This segmentation of the adjustment range into specific positions provides optimized tension settings for different conditions while keeping the mechanism simple and easy to operate.
3Adaptability or versatility
If multiple adjustment positions are provided for the lever, then the ability to match specific terrain conditions improves, but the structure of the adjustment plate becomes more complex
Solution Approach 1:
The adjustment plate incorporates multiple openings positioned along an arcuate path, creating discrete adjustment positions. Each opening provides a specific tension setting, segmenting the overall adjustment range into manageable positions. This segmented approach enables precise matching to different terrain conditions while maintaining a relatively simple plate structure.
Solution Approach 2:
The adjustment plate uses an arcuate (curved) path for the openings instead of a linear arrangement. This curvature allows the lever to pivot through a natural arc, providing multiple adjustment positions that follow the rotational movement of the lever, thereby optimizing the range of tension settings while keeping the plate geometry simple and manufacturable.
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
Enables easy adjustment of torsion spring tension to match changing terrain and crop conditions, enhancing the finger wheel rake's ability to maintain consistent ground pressure and improve raking efficiency.
Implementation Method 1
a torsion spring mounted to the support frame of the rake to achieve appropriate ground pressure
Implementation Method 2
Use of a torsion spring allows support for the rotating finger wheel and/or ground pressure exerted by the finger wheel to be adjusted
Implementation Method 3
The lever is pivotable about the axis of the rotational shaft of the finger wheel rake to a plurality of tension-setting positions
Data Source
AI summary
A torsion spring adjustment assembly for supporting a finger wheel rake that includes a lever operably connected to a torsion spring supporting the finger wheel rake for setting the tension of the torsion spring. The lever is pivotable about the axis of a rotational shaft of the finger wheel rake to a plurality of tension-setting positions and is secured to a main frame of the finger wheel rake at a position selected from the plurality of tension-setting positions. The lever is adjusted to a select position and then secured against the adjustment plate by a mechanical fastener.