Agricultural Toolbar Weight Shifting and Folding Mechanism
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Solution Overview
Problem
Agricultural toolbars have become larger and heavier, leading to compaction damage, and there is a need for systems to shift weight between the toolbar and tractor to reduce agronomic damage, as well as efficient methods for folding toolbars to navigate turns and topography changes during planting operations.
Innovation Solution
The design incorporates a folding frame with hydraulic cylinders and a control system that allows the toolbar to reconfigure between transport and work positions, shifting weight between the tractor and toolbar, and includes a three-point hitch system with lift assist wheels for improved maneuverability and reduced soil compaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the toolbar is made larger and heavier to improve planting capacity, then productivity increases, but soil compaction damage increases
Solution Approach 1:
The toolbar incorporates a folding frame with hydraulic cylinders that allow dynamic reconfiguration between transport and work positions. The frame can fold in half during transport to reduce width and unfold during planting to provide working width, enabling the system to adapt its configuration based on operational requirements rather than being fixed in a single state
Solution Approach 2:
The toolbar is divided into multiple sections including a center section and wing sections that can be independently folded. The folding frame divides the toolbar structure into manageable segments that can be collapsed together during transport and deployed during planting operations, allowing the large toolbar to be compacted for transport while maintaining planting capacity when deployed
2Productivity
If the toolbar is made larger and heavier to improve planting capacity, then productivity increases, but the difficulty of maneuvering increases
Solution Approach 1:
The folding frame with hydraulic cylinders enables the toolbar to dynamically change its configuration. During transport, the frame folds to a compact position that reduces width and improves maneuverability. During planting, the frame unfolds to provide the necessary working width for high productivity
Solution Approach 2:
The toolbar is segmented into foldable sections that can be independently collapsed. The wing sections can be folded toward the center section, and the center section can be folded toward the mount, creating a compact configuration for transport that is easily maneuvered while maintaining planting capacity when deployed
3Strength
If the toolbar uses a rigid fixed structure to maintain stability, then structural strength is improved, but the ability to navigate turns and topography changes deteriorates
Solution Approach 1:
The folding frame provides dynamic adaptability while maintaining structural strength through controlled folding mechanisms. The hydraulic cylinders and linkages are designed to maintain structural integrity during operation while enabling smooth folding and unfolding motions to navigate turns and topography changes
Solution Approach 2:
The toolbar is divided into segmented sections connected by folding joints that allow independent movement. This segmentation enables each section to adjust its position to navigate turns and topography changes while the overall structure maintains strength through the interconnected folding frame design
4Productivity
If the toolbar is designed for compact folding to improve transport efficiency, then device complexity increases
Solution Approach 1:
The folding frame employs hydraulic cylinders to power the folding mechanism, providing controlled and reliable folding action. The hydraulic system enables smooth folding and unfolding while maintaining structural stability, reducing the complexity of mechanical linkages and providing consistent operation
Solution Approach 2:
The folding mechanism is designed to be self-contained with the hydraulic cylinders and linkages integrated into the toolbar structure. The system uses its own hydraulic power source to perform folding operations without requiring external assistance, simplifying the overall system while maintaining compact folding capability
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 enables efficient folding and weight shifting, reducing soil compaction and allowing for effective navigation of turns and topography changes, thereby improving planting efficiency and minimizing agronomic damage.
Implementation Method 1
a folding frame with hydraulic cylinders and a control system that allows the toolbar to reconfigure between transport and work positions
Data Source
AI summary
Systems, methods, and apparatus for shifting weight between a tractor and toolbar and between sections of the toolbar, for controlling operative height of a toolbar and sections of a toolbar and for folding a toolbar between a work position and a transport position. A ground engaging wheel and an actuator are coupled to the toolbar. In one embodiment, a fluid control system is responsive to a command signal to modify the actuator pressure such that the actuator pressure corresponds to a desired pressure.