Deformable Quadrilateral Linkage for Independent Tool Depth Control
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Solution Overview
Problem
Existing agricultural tillage tools with combined seeders require adjusting the working depth of the seeder when modifying the soil working tool, which is inconvenient and often necessitates a dedicated chassis, increasing production costs and limiting compatibility with all tillage tools.
Innovation Solution
A deformable quadrilateral connecting structure between the agricultural tillage tool and the seeder allows independent adjustment of the working depth for each tool, preserving the seeder's orientation regardless of the soil working tool's depth changes, eliminating the need for a dedicated chassis and enabling separate depth adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the additional agricultural tool is attached using hooks with inclined ramps on a dedicated chassis, then the attachment is secure and the tool can be detached when not needed, but the agricultural soil working tool must include a dedicated chassis which increases production costs and limits compatibility
Solution Approach 1:
The connecting structure uses universal mounting points on the agricultural soil working tool that do not require a dedicated chassis. The deformable quadrilateral mechanism can attach to various tool types through standard mounting interfaces, making the system compatible with different agricultural tools without requiring tool-specific chassis designs.
Solution Approach 2:
The invention extracts the attachment mechanism from the tool itself and places it on the connecting structure. Instead of requiring the agricultural soil working tool to have dedicated chassis with hooks, the connecting structure independently provides the attachment function through its deformable quadrilateral mechanism, separating the attachment function from the tool design.
2Ease of operation
If the working depth of the agricultural soil working tool is adjusted, then the soil working performance is optimized, but the working depth of the additional agricultural tool must be adjusted accordingly which is inconvenient
Solution Approach 1:
The deformable quadrilateral connecting structure dynamically adapts to depth changes in the agricultural soil working tool while maintaining the desired orientation of the additional agricultural tool. As the working depth of one tool is adjusted, the quadrilateral mechanism automatically compensates to keep the other tool at the correct angle, eliminating the need for manual adjustment of both tools.
Solution Approach 2:
The connecting structure provides mechanical feedback that automatically compensates for depth adjustments. When one tool's depth is changed, the deformable quadrilateral mechanism responds by adjusting its configuration to maintain the proper geometric relationship between the two tools, eliminating the need for separate manual adjustments.
3Stability of the object's composition
If a rigid connecting structure is used between the agricultural soil working tool and the seeder, then the connection is stable, but the seeder's orientation cannot be maintained when the soil working tool's depth varies
Solution Approach 1:
The deformable quadrilateral mechanism changes its geometric parameters (angles and side lengths) in response to depth variations. This allows the connecting structure to maintain stability through continuous geometric adaptation while preserving the seeder's correct orientation relative to the ground, even as the overall depth position changes.
Data Source
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AI summary
An agricultural tillage implement (1) comprises a frame (2), a working element (3) mounted to move along the frame (2) by means of first adjustment means (4) for the working depth of said working element (3), and a reference element (5) mounted to pivot relative to the frame (2) by means of at least two lateral arms (6) and a pair of first pivot joints (A). In addition, the agricultural tillage implement includes an additional agricultural implement (7). In a mounted position (PM), the additional agricultural implement (7) is connected to said agricultural tillage implement (1) by a connecting structure forming a deformable quadrilateral.