Agricultural Sowing Implements Rocker System Vibration Control
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Solution Overview
Problem
Existing agricultural sowing implements experience vibrations and oscillations due to soil irregularities, leading to irregular seed distribution and reduced crop productivity, as the seed meter's positioning causes seeds to ricochet off the seed conductor walls, resulting in uneven seed spacing and intervals.
Innovation Solution
The implementation of a rocker system that absorbs vibrations from soil irregularities and a new seed meter positioning that aligns the seed exit curve with the seed conductor curve, combined with a seed-stabilizing device using bristles or pins to maintain seed stability on the disk, ensuring uniform seed distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the seed meter is positioned with the center coinciding with the longitudinal axis of the seed line, then the meter alignment is simplified, but the seed drop curve mismatches the seed conductor curve causing seeds to ricochet off the conductor walls
Solution Approach 1:
The seed meter is deliberately positioned asymmetrically relative to the longitudinal axis of the seed line. Specifically, the meter center is offset laterally and/or longitudinally so that the seed exit point aligns with the seed conductor inlet, creating a matched trajectory that prevents seed ricochet while maintaining simplified alignment procedures
Solution Approach 2:
The invention introduces an intermediary geometric relationship between the meter positioning and seed conductor orientation. By adjusting the meter's lateral and longitudinal coordinates, the seed drop trajectory serves as an intermediary curve that bridges the meter exit and conductor inlet, ensuring smooth seed transfer without impact
2Adaptability or versatility
If the agricultural implement moves through irregular plantation lands, then it can cover varied terrain, but the soil micro-relief irregularities cause vertical shaking of the depth-limiting wheels and meter, negatively affecting seed distribution
Solution Approach 1:
The patent introduces a cushioning system positioned between the depth-limiting wheels and the seed meter that proactively absorbs vertical shocks and vibrations before they reach the meter. This beforehand cushioning mechanism, consisting of elastic elements or dampers, mitigates the impact of soil irregularities on seed distribution precision while allowing the implement to traverse varied terrain
3Ease of operation
If seeds are dropped at right angles from the movement direction, then the seed meter positioning is straightforward, but the seed trajectory creates a mismatch with the bent seed conductor curve, causing seeds to fall with a left-leaning curve and impact the conductor walls
Solution Approach 1:
The invention makes the seed dropping trajectory dynamic by positioning the meter to account for the seed conductor's backward bend. The meter is offset laterally and/or longitudinally so that seeds naturally follow the curved path of the conductor, adapting the drop angle dynamically to match the conductor geometry rather than dropping at a fixed right angle
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 reduces machine vibrations and seed ricochet, achieving uniform seed distribution at regular intervals and improved crop productivity by stabilizing seed placement and reducing the impact of soil micro-relief irregularities on seed deposition.
Implementation Method 1
The rocker system equalizes the vertical movement of the agricultural implement during sowing, which reduces its vibrations and oscillations transmitted by soil irregularities
Implementation Method 2
a seed meter with positioning bristles, which provide greater seed stability in the dosing disk
Data Source
AI summary
An agricultural sowing implement that, when moved by a drive unit, distributes seeds in the ground with regular, uniform spacing. The agricultural sowing implement comprises a rocker system placed behind the chassis of the implement where a seed dispenser is positioned. The rocker system may include a beam connected to two depth-limiting wheels on the ends of the beam. In one embodiment of the disclosure, provision is made for two interlinked smaller wheels connected to a central lower extension of the beam, the set of wheels being encircled by a rolling band. In addition, provision is made for two dampers, one for each of the depth-limiting wheels.