Centralized Adjustment Device for Double-Sided Seed Scraper Alignment
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Solution Overview
Problem
Existing seed scraping devices require separate adjusters for each rod, making them expensive and prone to setting errors due to the need for individual adjustments of scraper elements on both sides of the sowing openings.
Innovation Solution
A centralized adjustment device allows simultaneous adjustment of scraper elements on both sides of the sowing openings using round rods with inclined or helical elements and resilient elements, ensuring precise alignment and reducing the complexity of adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate adjusters are used for each rod to adjust scraper elements, then individual adjustment precision is improved, but device complexity and cost increase
Solution Approach 1:
Two separate adjustment rods are merged into a single rod with two projections, allowing both scraper elements to be adjusted simultaneously from one central location. This reduces the number of adjusters from two to one, simplifying the device while maintaining adjustment precision through the coordinated action of both projections on the single rod.
Solution Approach 2:
The single adjustment rod serves multiple functions by having two projections that can independently adjust both scraper elements. This multi-functional design eliminates the need for separate adjusters for each scraper element, reducing device complexity while maintaining the ability to precisely adjust each element.
2Adaptability or versatility
If separate adjusters are used for each rod, then individual adjustment flexibility is improved, but time consumption for adjustment increases
Solution Approach 1:
The adjustment operation is merged into a single action where rotating the single rod simultaneously adjusts both scraper elements. This reduces the time required for adjustment while maintaining flexibility, as both elements can be adjusted in coordination or independently through the two projections on the same rod.
Solution Approach 2:
The two projections are pre-positioned on the single rod at appropriate locations to interact with both scraper elements. This preliminary arrangement allows for simultaneous adjustment of both elements when the rod is rotated, eliminating the need for sequential adjustment operations.
3Manufacturing precision
If multiple separate adjusters are used, then adjustment precision for each scraper is improved, but manufacturing cost increases
Solution Approach 1:
The manufacturing process is simplified by producing a single adjustment rod with two projections instead of two separate rods with adjusters. This reduces the number of parts to be manufactured, assembled, and calibrated, lowering manufacturing costs while maintaining positioning precision through the carefully designed projection-scraper element interfaces.
4Device complexity
If centralized adjustment device is used, then device complexity is reduced, but adjustment reliability may worsen
Solution Approach 1:
The single adjustment rod is segmented into two independent projections, each capable of independently adjusting one scraper element. This segmentation within the unified structure ensures that adjustment of one scraper does not negatively affect the other, maintaining reliability while simplifying the overall device structure.
Solution Approach 2:
Each projection on the rod has locally optimized features for interacting with its corresponding scraper element, ensuring reliable adjustment at each location. The local quality of each projection-scraper interface is maintained independently, guaranteeing reliable adjustment performance despite the centralized design.
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 solution simplifies the adjustment process, reduces costs by eliminating the need for multiple adjusters, and ensures accurate positioning of scraper elements relative to the drum, enhancing the reliability and efficiency of seed scraping.
Implementation Method 1
resilient elements pushing the two scraper elements apart are arranged between the scraper elements assigned to a row of sowing openings
Implementation Method 2
between the round rods and the wiper elements there are inclined planes acting on the wiper elements and/or helical elements are arranged
Implementation Method 3
between the round rods and the wiper elements there are inclined planes acting on the wiper elements and/or helical elements are arranged
Data Source
Figure 1
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Figure 3
AI summary
The device has positioning elements which are formed as central positioning device such that wiper elements (5) are displaced simultaneously and commonly from the adjusting direction. The wiper elements are arranged at both sides of a row (4). The individual grain-seeder is placed in a rotating drum and is impinged with a pressure difference.