Precision Seeder Sowing Unit with Organic-Material Furrow Clearing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sowing units fail to effectively place seeds on organic material, leading to reduced field emergence due to organic material not being cleanly cut and pressed into the furrow, necessitating prior soil preparation and increasing the risk of weed germination.
Innovation Solution
A sowing unit with a tine share having a furrow opening edge at an obtuse angle to the direction of travel, working in a 'gripping' manner, which clears organic material from the furrow and requires less share pressure, combined with a reconsolidation portion for soil stabilization and a differential pressure-based separation device for precise seed placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If cutting disks and furrow formers are used to create placement furrows, then furrow formation is achieved, but organic material is not cleanly cut and pressed into the furrow, resulting in reduced field emergence
Solution Approach 1:
The sowing unit is divided into functionally distinct components: cutting disks for initial furrow opening, a furrow former for furrow stabilization and shaping, and a tine share for organic material removal. This segmentation allows each component to perform its specific function optimally, with the tine share specifically targeting organic material removal to ensure clean seed placement.
Solution Approach 2:
The invention extracts and removes organic material from the placement furrow using the tine share with a positive cutting angle. This extraction function is separated from the furrow formation function, allowing the furrow to be formed cleanly without organic material interference, thereby improving seed-to-soil contact and field emergence.
2Reliability
If prior soil preparation is performed, then seed placement is improved, but the process becomes more complex and time-consuming
Solution Approach 1:
The cutting disks perform preliminary action by opening the placement furrow before the furrow former and tine share arrive. This preliminary furrow opening creates a path that guides the subsequent furrow formation and organic material removal processes, improving overall seed placement quality without requiring separate prior soil preparation operations.
Solution Approach 2:
The invention merges multiple functions into a single integrated sowing unit: furrow opening (cutting disks), furrow stabilization (furrow former), and organic material removal (tine share) all work together in one pass. This consolidation eliminates the need for separate prior soil preparation operations while maintaining high seed placement quality.
3Reliability
If disk shares are used for seed placement, then seed placement is achieved, but significant soil movement occurs, stimulating weed and grass germination
Solution Approach 1:
The tine share applies local quality by creating a narrow, precise cutting zone with a positive cutting angle that targets only the organic material in the furrow bottom. This localized action minimizes soil movement compared to the broader disturbance caused by disk shares, thereby reducing stimulation of weed and grass germination while maintaining effective seed placement.
4Ease of operation
If coulter disks with bearings are used, then share pressure control is achieved, but device complexity and costs increase
Solution Approach 1:
The invention extracts and eliminates the complex coulter disk system with bearings from the design. Instead, it uses a simpler tine share mechanism that achieves share pressure control through the positive cutting angle and gripping action, significantly reducing device complexity and costs while maintaining operational effectiveness.
Solution Approach 2:
The tine share uses a simpler, less expensive mechanism compared to the robust coulter disk system. The positive cutting angle design allows the share to enter and exit the soil efficiently without requiring complex bearing support systems, reducing both device complexity and manufacturing costs.
Data Source
AI summary
The invention relates to a sowing unit (10) for a precision seeder, comprising: a bracket (12); a tine share (24) arranged on the bracket (12) for producing a placement furrow for grains of seed, which furrow extends in the direction of travel, in the soil of an agricultural area; a separation device (18) arranged on the bracket (12) for separating grains of seed; a placement device (20) arranged on the bracket (12) for placing the grains of seed which have been separated by the separation device (18) into the placement furrow produced by the tine share (24); and a rolling body (26, 36, 38a, 38b) arranged on the bracket (12) for supporting the sowing unit (10) against the soil of the agricultural area and/or for depth guidance of the tine share (24).