Agricultural Header Pneumatic Support System
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Solution Overview
Problem
Existing agricultural header systems face challenges in maintaining consistent contact force across the cutter bar assembly due to differences in weight distribution, leading to ineffective following of field contours during harvesting.
Innovation Solution
A pneumatic support system with independently controlled air bags is implemented, where a third air bag is pneumatically isolated to offset the weight of the infeed deck, ensuring equal contact force across the cutter bar assembly by adjusting air pressure within the first and second air bags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple air bags are fluidly coupled to provide support, then the system complexity is reduced, but the contact force uniformity across the cutter bar assembly deteriorates
Solution Approach 1:
The air bag system is segmented into two independent groups: air bags coupled to the infeed deck form one group, while air bags coupled to the arms form another group. These groups are fluidly isolated from each other, allowing independent pressure control. This segmentation enables uniform contact force distribution across the cutter bar assembly by adjusting each group's pressure separately, resolving the contradiction between system simplicity and contact force uniformity.
2Ease of operation
If a single air pressure is established in all air bags, then the control system is simplified, but the cutting height consistency deteriorates
Solution Approach 1:
The air pressure control is segmented into two independent control systems: one for air bags coupled to the infeed deck and another for air bags coupled to the arms. Each control system can adjust pressure independently to achieve uniform contact force and consistent cutting height across the width of the header, while maintaining relatively simple control within each segment.
3Device complexity
If the infeed deck and arms are supported by the same air pressure system, then the structural design is simplified, but the contour following ability deteriorates
Solution Approach 1:
The support system is segmented into two functionally independent subsystems: one supporting the infeed deck and another supporting the arms. Each subsystem can be adjusted independently to provide optimal support for its respective component, enabling the cutter bar assembly to follow field contours effectively while maintaining a relatively simple overall structure.
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 allows the cutter bar assembly to effectively follow the field contours, maintaining consistent cutting height and reducing wear on the header, thereby improving harvesting efficiency and crop quality.
Implementation Method 1
A first air bag is fluidly coupled to a pneumatic supply system, a second air bag is fluidly coupled to the pneumatic supply system, and a third air bag is pneumatically isolated from the pneumatic supply system
Data Source
AI summary
A support system for an agricultural header includes a first actuator configured to couple to a frame of the agricultural header and to a first element of the agricultural header. The support system also includes a second actuator configured to couple to the frame of the agricultural header and to a second element of the agricultural header. Furthermore, the support system includes a third actuator configured to couple to the frame of the agricultural header and to the second element of the agricultural header. The support system also includes a fluid supply system configured to provide pressurized fluid to the first actuator and to the second actuator. The third actuator is fluidly isolated from the fluid supply system, the first actuator, and the second actuator.