Harvester Cutting Unit Automatic Height Adjustment
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Solution Overview
Problem
Existing cutting units for harvesting machines require manual adjustment of cutting blade parameters based on crop type and condition, leading to potential misjudgment and reduced harvesting performance, especially when crop conditions change during operation.
Innovation Solution
An automatic adjusting device connected to a detection system that adjusts the cutting blade arrangement relative to the conveyor based on real-time crop height measurements, ensuring optimal cutting unit settings without operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If manual adjustment of cutting blade position is used, then the operator can adapt to different crop types, but misjudgment occurs and harvesting performance is limited
Solution Approach 1:
The patent replaces the manual mechanical adjustment system with an automated optical detection and hydraulic adjustment system. The detection device (optical or ultrasonic sensor) automatically measures crop height, and the control device automatically adjusts the cutting blade position via hydraulic actuators, eliminating manual assessment and adjustment by the operator.
Solution Approach 2:
The cutting unit performs self-adjustment based on automatic detection of crop parameters. The system detects crop height independently and automatically adjusts its own configuration without requiring external human intervention, making the system self-sufficient in adapting to different harvesting conditions.
2Adaptability or versatility
If manual adjustment before each harvesting process is required, then the cutting unit can be configured for different crops, but the driver's workload increases and adjustment is tedious
Solution Approach 1:
The cutting unit automatically detects crop height and adjusts its own configuration without requiring the driver to manually assess and adjust settings. The system serves itself by independently determining optimal parameters and implementing the adjustments.
Solution Approach 2:
The manual operation of assessing crop height and adjusting cutting blade position is replaced by an automated system combining optical/ultrasonic detection with hydraulic adjustment mechanisms, freeing the driver from this tedious task.
3Device complexity
If fixed cutting blade position is used, then the structure is simple, but the cutting unit cannot adapt to changing crop conditions during harvesting
Solution Approach 1:
The cutting blade position is made dynamically adjustable during operation. The system transitions from a fixed static configuration to a dynamic one where the cutting blade position can be automatically adjusted in response to real-time detection of crop height changes, enabling adaptation to varying harvesting conditions.
Solution Approach 2:
The system implements a feedback loop where the detection device continuously monitors crop height and feeds this information to the control device, which then adjusts the cutting blade position accordingly. This closed-loop control enables the system to adapt to changing conditions during harvesting.
4Reliability
If the driver reacts to every change in crop conditions, then optimal settings can be maintained, but this is hardly possible in practice
Solution Approach 1:
The cutting unit independently monitors crop conditions and automatically adjusts its configuration without requiring the driver's attention or reaction. The system handles the adaptation task itself, making the driver's reaction capability irrelevant.
Solution Approach 2:
The automatic feedback system continuously detects crop height and adjusts cutting blade position in real-time, ensuring optimal settings are maintained without requiring the driver to perceive or respond to changes in crop conditions.
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 enhances harvesting performance by maintaining optimal cutting unit settings even as crop conditions change, reducing operator workload and minimizing manual adjustments, thereby improving efficiency and consistency.
Implementation Method 1
An optically based or ultrasonically based height control mechanism controls the separation height
Implementation Method 2
An optically based or ultrasonically based height control mechanism controls the separation height
Data Source
Figure 1
AI summary
The invention relates to a cutting unit (11) for a harvester comprising a cutting-blade assembly (17) for cutting a crop to be harvested and a conveying device (19), which conveys the cut crop to be harvested away from the cutting-blade assembly in order to feed the cut crop to be harvested to a processing device. A detecting device (27) is provided for determining at least one parameter of the crop to be harvested, wherein a control device connected to the detecting device (27) is designed to adjust a cutting-unit parameter of the cutting unit (11) in dependence on the determined parameter of the crop to be harvested.