Modular Cutting Unit for Combine Harvesters
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Solution Overview
Problem
Existing agricultural cutting units for working machines, such as combine harvesters, lack the ability to easily and variably adjust cutting widths, often requiring additional cutting elements and complex arrangements to achieve full working width coverage, which can lead to inefficient cutting and increased space requirements.
Innovation Solution
A modular agricultural cutting unit comprising a combination of main and secondary cutting units with horizontally arranged shafts and cutting elements, where the cutting modules are affixed to a common supporting frame without drilling, allowing for easy assembly and disassembly, and enabling the creation of different cutting widths by combining various module widths, reducing the need for overlapping shafts and enhancing flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If multiple cutting units are arranged with overlapping shafts to achieve full working width coverage, then the cutting width is improved, but the device complexity and space requirements increase
Solution Approach 1:
The cutting unit is divided into multiple separate cutting modules (first cutting module, second cutting module, third cutting module) that can be independently arranged on the supporting frame. Each module has its own shaft and cutting elements, allowing them to be positioned adjacent to each other without overlapping, thus achieving full working width coverage while reducing structural complexity
Solution Approach 2:
The supporting frame is designed as a universal structure that can accommodate multiple different cutting modules with various widths. The frame provides standardized mounting positions and connection points, allowing the same frame to support different combinations of cutting modules to achieve different total cutting widths, thereby reducing the need for multiple specialized arrangements
2Length of moving object
If additional cutting elements are added to ensure proper chopping over full working width, then the cutting width is improved, but the quantity of components and assembly complexity increase
Solution Approach 1:
Instead of adding additional cutting elements to existing shafts, the invention segments the cutting function into separate cutting modules. Each module contains its own shaft and cutting elements (flails), and modules are arranged adjacent to each other on the supporting frame. This segmentation allows full working width coverage without requiring overlapping shafts or excessive cutting elements
Solution Approach 2:
The cutting modules are designed to be adjustable and reconfigurable on the supporting frame. The number, position, and arrangement of cutting modules can be dynamically changed to match different working width requirements, allowing the system to adapt to various field conditions without permanently installing additional cutting elements
3Reliability
If cutting modules are permanently connected to achieve stable cutting, then the reliability is improved, but the adaptability to different cutting widths decreases
Solution Approach 1:
The cutting unit is segmented into independent cutting modules that are connected to the supporting frame through removable connections. This segmentation allows individual modules to be easily added, removed, or repositioned on the frame, enabling the cutting width to be adjusted by changing the number and arrangement of modules while maintaining stable cutting performance with the configured arrangement
Solution Approach 2:
The supporting frame incorporates adjustable mounting mechanisms that allow cutting modules to be positioned at different locations and orientations. The connection system enables dynamic reconfiguration of the cutting modules to achieve different total cutting widths, while once configured, the modules provide stable and reliable cutting operation for the selected width
Data Source
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AI summary
A modular agricultural cutting unit (8) for a working machine (1), in particular a combine harvester, has a plurality of cutting modules (13) each having a horizontally arranged shaft (15) drivable in rotation and a plurality of cutting elements (16) arranged on the appropriate shaft (15), for cutting crop material, where in the shafts (15) of the cutting modules (13) are not arranged to overlap in the cutting width (9) of the cutting unit (8).