Rolling Basket Scraper Dynamics for Tillage Clogging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing rolling basket tillage implement faces issues with clogging due to the excessive distance between the internal scraper and blades, leading to formation of large soil nuggets and entrapment of stones, wood, and plant remains, causing operational stoppages and manual intervention for clearance.
Innovation Solution
The internal scraper is positioned significantly closer to the blades, with an elastic connection using C-springs, reducing the radial distance between the scraper and blades to 2.5 cm or less, allowing flexible movement and preventing blockages, and enabling efficient self-cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the internal scraper is positioned far from the blades (approx. 8-10 cm), then the possibility of insertion (clogging) of solid objects is reduced, but large nuggets are formed and the spacing between scraper and blade cannot be reduced further without risking clogging
Solution Approach 1:
The internal scraper is made movable relative to the blade through an elastic connection (C-spring), allowing the scraper to dynamically adjust its position. During normal operation, the scraper maintains optimal spacing for cutting soil into small nuggets. When solid objects cause excessive spacing, the elastic connection allows the scraper to move and maintain contact, preventing clogging while continuing to produce fine nuggets.
Solution Approach 2:
The spacing parameter between the internal scraper and blade is changed from a fixed value (8-10 cm) to a variable value that can adjust dynamically. The elastic connection enables the scraper to move within a range, allowing the spacing to be optimized for different operating conditions - close enough to cut small nuggets but with enough travel capacity to avoid clogging from solid objects.
2Device complexity
If the internal scraper is rigidly connected to the blade, then structural simplicity is maintained, but stones, pieces of wood, plant remains, etc. get caught in the gap between the internal scraper and the blades, causing forced stop
Solution Approach 1:
The rigid connection is replaced with an elastic connection using C-springs, making the scraper assembly dynamic rather than static. This allows the internal scraper to move relative to the blade when encountering solid objects, preventing them from getting caught and causing forced stops. The elastic connection absorbs the impact and allows the scraper to maintain functional contact with the blade while accommodating variations in spacing caused by foreign objects.
3Reliability
If the internal scraper is positioned far from the blades, then clogging by solid objects is reduced, but the blade cannot eject ground or other solid object penetrated into the interior of the rolling basket, stopping rotation
Solution Approach 1:
The movable scraper connection enables the ejection mechanism to function effectively. When soil or solid objects penetrate into the basket interior, the blade's rotation combined with the scraper's ability to move maintains optimal ejection geometry. The scraper can adjust its position to work with the blade in ejecting penetrated materials, preventing rotation stoppage while still providing protection against clogging from larger solid objects.
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 configuration enhances operational safety and efficiency by preventing clogging, allowing smaller soil nuggets to be ejected and reducing downtime, ensuring continuous operation even in soft soils.
Implementation Method 1
The radially outer end of the elastic member is attached to an end of the internal scraper... allowing flexible rotation and/or radial displacement of the internal scraper
Implementation Method 2
a thin walled soil 'tubing' is formed which is pushed into the interior of the basket by rolling down the basket on the ground, from which the centrifugal force is pulled out through the openings
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention relates to an agricultural tillage implement, mainly rolling basket for tillage works after plowing and/or seedbed preparation. This rolling basket (6) comprises a basket structure (6A) including a plurality of coaxial discs (17, 18) associated with longitudinal crushing blades (19) extending from one end to an opposing end along a major axis (24) of the basket structure (6A). The crushing blades (19) define an inner space (20) of the basket structure (6A), and said inner space (20) being accessible through openings (21) provided between the crushing blades (19). The basket structure (6A) is configured in such a way to rotate around the major axis (24). Furthermore, the rolling basket (6A) comprises a stationary internal scraper (29) arranged in the inner space (20) of the basket structure (6A) at a distance (T) from the crushing blades (19). The essence of the invention lies in that the stationary internal scraper (29) arranged in the inner space (20) of the basket structure (6A) of the rolling basket (6A) in cooperation with one of the crushing blades (19) so that the radial distance (T) between the radially inner edge of the blades (19) and the radially outer edge of the scraper (29) has been significantly reduced, preferably at most to 2.5 cm. On the other hand, at least one end, but preferably both ends of the stationary internal scraper (29) is/are connected to stationary shaft pin(s) (23) of the rotary basket via an elastic member (26) in the inner space (20) of the basket structure (6A) of the rolling basket (6).