Integrated Lift and Frame Lock for Folding Corn Head
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Solution Overview
Problem
Existing corn heads require separate mechanisms for automatically actuating and locking row separator covers and folding sections, which complicates the folding and unfolding process, especially during transport and maintenance, and lacks a clear visual indication of the locking status.
Innovation Solution
A single hydraulic actuator assembly that moves the row separator cover to an angled position for folding and locks the frame sections, providing a visual indication when the frames are locked, and automatically disengages the frames for folding by retracting the actuator, allowing the wings to fold without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate mechanisms are used for actuating row separator covers and locking folding sections, then each function can be independently controlled, but the device complexity increases and the folding/unfolding process becomes more complicated
Solution Approach 1:
The patent combines the actuation of row separator covers and the locking of folding sections into a single integrated mechanism. The hydraulic cylinder connects through a linkage system that simultaneously controls both the row separator cover position and the folding section locking, reducing the number of separate mechanisms while maintaining independent controllability of each function.
Solution Approach 2:
The single hydraulic actuator assembly serves multiple functions: it actuates the row separator cover to angled positions for folding, locks the folding sections during transport, and provides visual indication of locking status. This multi-functional approach simplifies the overall system while achieving all required operations.
2Extent of automation
If manual support struts are used for lifting row separator covers, then the mechanism is simple, but automation is lost and maintenance access requires manual intervention
Solution Approach 1:
The automatic actuation mechanism for row separator covers is merged with the folding section locking mechanism. The same hydraulic cylinder and linkage system that locks the folding sections also automatically positions the row separator covers, achieving automation without requiring a separate dedicated mechanism.
Solution Approach 2:
The system automatically positions the row separator covers during the folding and unfolding operations without requiring manual intervention. The hydraulic actuator self-regulates the cover position based on the folding section movement, providing automated maintenance access while reducing operational complexity.
3Reliability
If visual verification of locking status is not provided, then the system is simpler, but safety and reliability during operation are compromised
Solution Approach 1:
The row separator cover itself serves as the visual indicator of locking status. When the folding sections are locked, the row separator cover is positioned in a specific location that is visible to the operator. The position and orientation of the cover change based on the locking state, providing intuitive visual feedback without requiring additional indicators or complex verification systems.
4Adaptability or versatility
If row separator covers are not tilted for folding, then the structure remains simple, but sufficient space for folding cannot be created
Solution Approach 1:
The tilting motion of the row separator cover is merged with the folding section movement. The hydraulic cylinder and linkage system that controls folding section positioning also controls the cover tilt angle, coordinating both movements to create sufficient folding space while maintaining structural simplicity.
Solution Approach 2:
The row separator cover is designed with dynamic positioning capability, allowing it to tilt to different angles during folding operations. The cover transitions from a fixed protective position during harvesting to an angled position during folding, adapting to the operational requirements without requiring additional mechanical structures.
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
Simplifies the folding and locking process with a single mechanism, ensuring secure locking during operation and clear visual confirmation, while allowing for efficient folding and unfolding of the corn head sections.
Implementation Method 1
a single hydraulic actuator assembly that moves the row separator cover to an angled position for folding and locks the frame sections
Data Source
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AI summary
A harvester or combine includes a folding corn head with a center section and folding wing sections. A folding row separator cover at the hinge location of the folding head sections folds to an angled position so that the folding action between the wings and the center section is not impaired. A single assembly actuates the folding of the row separator as well as locking and unlocking of the wing sections relative to the center frame section. A hydraulic cylinder actuates a main link that connects to the row separator cover and also to a lock pin. Actuation of the hydraulic cylinder pulls the extended end of the main link rearward and upward to raise the cover. The same motion also pulls the locking pin forward from engagement. Retraction of the hydraulic cylinder rod lowers the extended end of the frame of the main link and pulls the cover downward while also moving the lower portion of the main link rearward to engage the locking pin with the frame.