Axially Adjustable Sowing Disc for Precision Seeding
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Solution Overview
Problem
Existing sowing hearts for precision seed drills are expensive to manufacture and difficult to handle due to the need for manual grinding of parts, leading to non-interchangeable components and seed loss during operation.
Innovation Solution
A sowing heart design featuring an axially adjustable sowing disc using an actuator-driven flange and tensioning element, allowing for precise adjustment and replacement without grinding, ensuring optimal sealing and minimizing seed loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the partition wall is manually ground to ensure tight separation, then sealing quality is improved, but manufacturing cost increases and components become non-interchangeable
Solution Approach 1:
The sowing disc is made axially adjustable relative to the partition wall through a movable mounting structure. This dynamic adjustment capability allows the sowing disc to adapt to different sealing requirements without requiring custom grinding of the partition wall for each sowing disc, thus maintaining high sealing quality while enabling interchangeability and reducing manufacturing costs.
2Manufacturing precision
If manual grinding is performed on the partition wall, then sealing quality is improved, but component interchangeability is lost
Solution Approach 1:
The mounting structure allows the sowing disc to be adjusted axially relative to the partition wall. This dynamic positioning enables the sowing disc to achieve optimal sealing contact without requiring the partition wall to be custom-ground for each specific sowing disc, thereby maintaining both high sealing quality and full interchangeability of components.
3Device complexity
If the sowing disc is fixed in position, then structural simplicity is maintained, but sealing quality and adjustability deteriorate
Solution Approach 1:
The sowing disc is mounted on an adjustable structure that allows axial movement relative to the partition wall. This dynamic mounting enables precise positioning to achieve optimal sealing contact while maintaining a relatively simple overall structure. The adjustment mechanism adds minimal complexity but delivers significant improvements in sealing quality and adaptability.
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
The solution enables cost-effective and flexible handling of sowing hearts, allowing for easy replacement of components and minimizing seed loss, ensuring efficient seed delivery and extended storage of even fine seeds.
Implementation Method 1
The flange is pretensioned from its rear side by the tensioning element
Implementation Method 2
the vacuum area, in which a negative pressure is generated for holding and transporting the seed
Data Source
Figure 1a
Figure 1b
Figure 2a~2b
AI summary
The meter (3) has a seed chamber (11) separated from a pressure chamber (10) by a rotatable seed disk (9). A storing section (17) is partially separated with respect to a transport- and delivery section (18) by a separating wall (19). The seed disk includes seed holes (15) in a defined arrangement for defined receiving and delivery of seed (16) using pressure sections (13, 14) defined by the pressure chamber. The seed chamber is separated in the storing section and the transport- and delivery section. The seed disk is adjustable with respect to the wall by a stepless adjustment device.