Closed-loop dual-pressure stabilizer wheel control
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Solution Overview
Problem
Wide towable agricultural tillage implements experience undesirable bouncing and deep digging during operation, particularly when turning or maneuvering, due to the hinged joints and flexibility in their frames, which complicates the positioning and adjustment of stabilizer wheels for optimal seedbed preparation.
Innovation Solution
A remotely positionable stabilizer wheel arrangement using a control unit, hydraulic positioning cylinder, and pressure control valves allows for precise and automatic adjustment of stabilizer wheels in response to desired positions and tillage depths, enabling remote operation from the towing vehicle without the need for manual intervention or assistants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If stabilizer wheels are extended further or press harder against the ground surface to reduce bouncing and digging, then stability improves, but the lifting effect on the implement frame interferes with proper operation of tillage tools and seedbed quality deteriorates
Solution Approach 1:
The stabilizer wheel position is made dynamically adjustable through a hydraulic cylinder system that can remotely extend or retract the wheels based on operating conditions. This allows the system to adapt between providing maximum stability when needed and minimizing interference with tillage tool operation during depth control adjustments, resolving the contradiction between stability and ease of operation.
Solution Approach 2:
The system changes the positional parameter of the stabilizer wheels using a hydraulic cylinder controlled by pressure control valves. By adjusting the extension/retraction position of the hydraulic cylinder, the system can vary the stabilizer wheel's contact with the ground to optimize both stability and tillage tool operation without manual intervention.
2Ease of operation
If stabilizer wheels are manually adjusted to bear lightly on the ground surface to enhance pivotability during turning, then maneuverability improves, but operator time and effort increase
Solution Approach 1:
The stabilizer wheel positioning system operates autonomously through a closed-loop control system with a control unit that automatically adjusts the hydraulic cylinder position based on desired position inputs. The system self-regulates the stabilizer wheel contact force to enhance pivotability during turning without requiring manual adjustment by the operator, eliminating time loss while maintaining maneuverability.
Solution Approach 2:
The manual mechanical adjustment system is replaced with an automated hydraulic control system. The hydraulic cylinder, controlled by electrically operated pressure control valves and a control unit, substitutes for manual mechanical adjustment mechanisms, providing automated maneuverability enhancement without operator intervention.
3Measurement precision
If a remotely positionable stabilizer wheel arrangement with automatic control is implemented, then positioning precision and operator efficiency improve, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it receives desired position inputs, processes positioning commands, controls both rod end and base end pressure control valves, and enables automated stabilizer wheel positioning. This multi-functionality reduces the need for separate control components, achieving high positioning precision while managing device complexity through functional integration.
Solution Approach 2:
The system uses a hydraulic cylinder with electrically operated pressure control valves to achieve precise stabilizer wheel positioning. By utilizing hydraulic pressure control instead of complex mechanical positioning mechanisms, the system achieves high positioning precision while keeping the device complexity manageable through the use of standard hydraulic components.
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 enhances the stability and maneuverability of wide tillage implements by allowing for precise and automatic adjustment of stabilizer wheels, improving seedbed quality and reducing operator time and error, while being adaptable to various tractors without complex system upgrades or advanced communication protocols.
Implementation Method 1
A remotely positionable stabilizer wheel arrangement utilizing a control unit and hydraulic power supply to control the position of the stabilizer wheel on a towable agricultural implement
Implementation Method 2
control the position of the stabilizer wheel by simultaneously controlling pressure in both the rod and base ends of the bore of the hydraulic cylinder
Data Source
AI summary
A remotely positionable stabilizer wheel arrangement for a towable agricultural implement utilizes a control unit that receives an input signal indicative of a desired position of the stabilizer wheel, and/or a desired depth of penetration of tillage tools operatively attached to the front and rear of the implement frame, to automatically control a hydraulic positioning cylinder of the remotely positionable stabilizer wheel arrangement to position and hold the stabilizer wheel at the desired position of the stabilizer wheel, by simultaneously controlling pressure in both the rod and base ends of the bore of the hydraulic cylinder to hold the stabilizer wheel at a target position determined from the desired position input signal.