Dual Cut Header Assembly Automatic Height Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dual cut header assemblies for sunflowers require manual adjustment of both header and chopper heights, limiting driving speed and resulting in inconsistent stubble height due to the complexity of controlling multiple heights, which often leads to a bulldozer effect or incomplete cutting.
Innovation Solution
A dual cut header assembly with an actuator and sensor system that automatically adjusts the distance between the header and chopper, using a pressure sensor or height sensor to maintain optimal chopper height and minimize ground pressure, allowing for constant stubble height and increased driving speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual adjustment of header and chopper heights is used, then the operator can control cutting heights, but driving speed is limited and stubble height becomes inconsistent
Solution Approach 1:
The chopper height control system performs self-adjustment automatically based on header height positioning. The control unit receives header height signals and autonomously commands the chopper actuator to adjust chopper height, eliminating the need for manual intervention and enabling the operator to focus on driving while maintaining optimal cutting parameters
Solution Approach 2:
The system implements closed-loop feedback control where sensors continuously monitor header and chopper heights, transmit data to the control unit, which then adjusts actuator positions accordingly. This feedback mechanism ensures consistent stubble height and maintains optimal cutting performance across varying field conditions
2Extent of automation
If hydraulic master slave coupling is used to link chopper height to header height, then automation is achieved, but the chopper either digs into ground or leaves stalks too high
Solution Approach 1:
The height control system is divided into independent controllable segments - the header height control and the chopper height control. Each has its own actuator and control parameters, allowing them to be adjusted independently rather than being rigidly coupled, which enables precise control of the distance between header and chopper
Solution Approach 2:
The system dynamically adjusts chopper height based on real-time header position and ground conditions. The control unit continuously processes sensor data and modifies actuator commands to maintain optimal chopper-to-ground distance, adapting to varying field conditions such as flatness and rear lift system settings
3Adaptability or versatility
If chopper height is manually controlled, then adjustment flexibility is available, but significant operator concentration and experience are required
Solution Approach 1:
The header height control and chopper height control systems are merged into a single integrated control unit. This unified controller receives inputs from both height sensors and coordinates actuator commands, simplifying the operator interface while maintaining full adjustability of both heights through a single control system
Data Source
AI summary
A dual cut header assembly including a header, a chopper suspended from the header, and an actuator system comprising one or more cylinders. The actuator system solely connects the chopper to the header. The dual cut header assembly further includes at least one sensor for measuring a state of the chopper and an actuator steering module connected to the actuator system. The header is configured to be lifted by an agricultural vehicle to cut crop material from a field at a first height. The chopper is configured to cut the crop material at a second height lower than the first height. The actuator steering module is configured to automatically adapt the distance based on the measured state of the chopper.