Harvester Wing Weight Distribution Actuator
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Solution Overview
Problem
Harvesters face challenges in efficiently managing weight distribution over variable ground surfaces, leading to inefficiencies in crop harvesting due to uneven support and potential missed crops.
Innovation Solution
A harvester system with a header featuring a center segment, wing, and actuator, coupled with sensors and a hydraulic assembly, allows for dynamic adjustment of weight distribution by transferring a variable portion of the wing's weight to the frame, enabling optimal movement over changing terrain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the header uses fixed weight distribution, then the structure is simple, but the harvesting efficiency decreases on variable ground surfaces
Solution Approach 1:
The patent implements dynamic weight distribution by allowing the header wings to be adjustable in position and orientation. The actuator system enables real-time modification of the header's weight distribution based on ground conditions, transforming a static structure into a dynamic one that adapts to variable terrain during harvesting operations.
Solution Approach 2:
The system changes physical parameters of the header assembly, specifically the position, angle, and weight distribution of the wings. By varying these parameters through actuator control, the header can optimize its interaction with the ground surface under different conditions, improving harvesting efficiency without fixed constraints.
2Reliability
If the wing bears all its weight on the ground, then the contact is consistent, but the wear increases and crop harvesting is compromised
Solution Approach 1:
The actuator system functions as a counterweight mechanism by lifting portions of the header wings off the ground surface. This counteracts the harmful effect of excessive ground contact wear and crop interference by strategically redistributing weight to reduce direct contact between the wing and ground, while maintaining sufficient contact for stable operation.
Solution Approach 2:
The system incorporates sensors that provide feedback on ground contact conditions, and the controller uses this information to adjust the actuator position. This feedback loop enables the system to automatically optimize weight distribution to maintain reliable ground contact while minimizing wear and crop loss, adapting to changing conditions in real-time.
3Adaptability or versatility
If the header is rigid and fixed, then the structure is stable, but it cannot adapt to variable terrain conditions
Solution Approach 1:
The header assembly transitions from a rigid fixed structure to a dynamic adjustable system. The actuator mechanisms enable the wings to change their position and orientation relative to the header body, allowing the structure to adapt to variable terrain conditions while maintaining operational stability through controlled movement rather than fixed rigidity.
Solution Approach 2:
The header is divided into separable components, particularly the wings that can be independently adjusted relative to the main header body. This segmentation allows each component to be optimized for its specific function - the main body remains stable while the wings adapt to terrain conditions, combining structural stability with terrain adaptability.
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 enhances harvesting efficiency by minimizing wear and ensuring consistent contact with the ground surface, reducing the risk of missed crops by dynamically adjusting the load support distribution based on real-time sensor feedback.
Implementation Method 1
a pump configured to pressurize hydraulic fluid and in fluid communication with the reservoir
Implementation Method 2
an actuator in fluid communication with the pump and configured to at least partially support the lateral wing section
Data Source
AI summary
A harvester includes a frame and a header coupled to the frame. The header includes a center segment, a wing coupled to the center segment, and an actuator between the wing and the center segment. The wing includes a ground-engaging component configured to bear a first variable portion of the weight of the wing and a wing sensor coupled to the wing. The actuator is configured to transfer a second variable portion of the weight of the wing to the frame. A controller is configured to receive a signal from the wing sensor and to send a signal to the actuator to vary a ratio of the first variable portion of the weight of the wing to the second variable portion of the weight of the wing.