Agricultural Row Unit Hydraulics for Planting Depth Consistency
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Solution Overview
Problem
Existing agricultural implements face challenges in efficiently adjusting to varying soil conditions, leading to inconsistent planting depth and seedling emergence, particularly in wide planters with multiple row units, due to the inability to independently control the vertical movement and down force of each unit.
Innovation Solution
The implementation of a hydraulic system with pivotably coupled support members, hydraulic cylinders, controllable pressure control valves, and sensors that allow for real-time adjustment of down force and vertical positioning of each row unit, using a controller to manage hydraulic fluid pressure based on soil conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a hydraulic system with individual control for each row unit is implemented, then planting precision and adaptability to varying soil conditions are improved, but device complexity and cost increase
Solution Approach 1:
The planter is divided into multiple independently controllable row units, each with its own hydraulic cylinder, sensor, and control valve. This segmentation allows each row unit to independently adjust to local soil conditions, achieving consistent planting depth across varying terrain without requiring a complete redesign of the entire system.
Solution Approach 2:
The system transitions from a static, fixed-position row unit design to a dynamic system where each row unit can independently adjust its vertical position and down force in real-time. The hydraulic cylinders and control valves enable continuous adaptation to changing soil conditions, maintaining optimal planting depth throughout the field.
2Adaptability or versatility
If hydraulic cylinders and pressure control valves are added to each row unit for independent control, then adaptability to varying soil conditions improves, but device complexity increases
Solution Approach 1:
Each row unit is equipped with sensors that automatically detect soil conditions and trigger the hydraulic system to adjust down force and vertical position without operator intervention. The system serves itself by using sensor feedback to autonomously control the hydraulic cylinders and pressure valves, reducing the need for manual adjustments and complex operator inputs.
Solution Approach 2:
Sensors mounted on each row unit continuously monitor soil contact conditions and provide feedback to the control system. This feedback loop enables real-time adjustments of hydraulic pressure and cylinder position, allowing the system to adapt to varying soil conditions dynamically. The feedback mechanism reduces complexity by using simple sensor inputs to automatically control the hydraulic components.
3Stability of the object's composition
If sensors and controllers are integrated into each row unit for real-time monitoring and adjustment, then planting uniformity improves, but device complexity and manufacturing cost increase
Solution Approach 1:
The control system is segmented into individual row unit controllers rather than a centralized control system. Each row unit has its own sensor and control valve pair, allowing independent monitoring and adjustment. This segmentation simplifies the overall control architecture by distributing intelligence to each unit, reducing the complexity of centralized control while maintaining planting uniformity.
4Measurement precision
If individual hydraulic control is provided for each support member, then vertical positioning accuracy improves, but device complexity and hydraulic system requirements increase
Solution Approach 1:
The hydraulic system is segmented into individual control circuits for each row unit, with dedicated cylinders and pressure control valves. This segmentation allows precise control of vertical positioning for each unit independently, achieving high measurement precision in vertical positioning without requiring a monolithic complex hydraulic system.
Solution Approach 2:
The patent utilizes hydraulic cylinders with pressure control valves to achieve precise vertical positioning of each row unit. The hydraulic system provides controlled force application through the cylinders, with pressure regulation enabling accurate depth control. This hydraulic approach offers smoother and more precise positioning compared to purely mechanical alternatives.
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 system enables precise and independent control of each row unit's down force and vertical movement, improving planting accuracy, uniformity, and yield by adapting to varying soil conditions, thereby enhancing productivity and reducing manual adjustments.
Implementation Method 1
a plurality of hydraulic cylinders, each of which is coupled to one of the support members for urging the respective support member downwardly toward the soil, each of the hydraulic cylinders including a movable ram extending into the cylinder
Implementation Method 2
a plurality of controllable pressure control valves, each of which is coupled to one of the hydraulic lines for controlling the pressure of hydraulic fluid supplied by the respective hydraulic lines to the respective cylinders
Implementation Method 3
a sensor coupled to the tool and the gauge wheel for detecting changes in the difference between the vertical positions of the tool and the gauge wheel, and producing an output corresponding to the changes
Implementation Method 4
a plurality of support members, each of which is pivotably coupled to the attachment frame or another of the support members to permit vertical pivoting vertical movement of the support members
Data Source
AI summary
An agricultural implement includes at least one row unit having a plurality of support members, each of which is pivotably coupled to an attachment frame or another of the support members to permit vertical pivoting vertical movement of the support members, and a plurality of soil-engaging tools, each of which is coupled to at least one of the support members. A plurality of hydraulic cylinders are coupled to the support members for urging the support members downwardly toward the soil. A plurality of controllable pressure control valves are coupled to the hydraulic cylinders for controlling the pressure of hydraulic fluid supplied to the cylinders. A plurality of sensors produce electrical signals corresponding to predetermined conditions, and a controller is coupled to the sensor and the controllable pressure control valves. The controller receives the electrical signals from the sensors and produces control signals for controlling the pressure control valves.