Chopping Module with Rotating Blade and Fixed Shearbar
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Solution Overview
Problem
Conventional chopping devices for plants lack efficiency and durability in their internal cutting systems, particularly in the integration with harvesters, where simultaneous chopping and harvesting are required, and maintenance is cumbersome.
Innovation Solution
A modular chopping system with a fixed shearbar and a rotating blade assembly, where blades are strategically positioned along a rotating roller, allowing precise cutting and efficient billet formation, and featuring self-adjusting rollers for optimal plant alignment and automatic residue disposal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cutting systems are used in harvesters, then the harvester can perform basic harvesting functions, but the chopping efficiency and durability are insufficient when simultaneous chopping and harvesting are required
Solution Approach 1:
The cutting system is divided into two independent components: a fixed shearbar and a rotating blade assembly. This segmentation allows each component to be optimized for its specific function - the shearbar provides a durable fixed cutting edge while the rotating blades deliver continuous cutting action, resolving the contradiction between chopping efficiency and durability
Solution Approach 2:
The patent merges the chopping function with the harvesting process by integrating the cutting system into the harvester's existing structure. The fixed shearbar and rotating blade assembly work together as a unified cutting mechanism that operates simultaneously with the harvesting function, enabling both operations to occur together without compromising either productivity or reliability
2Manufacturing precision
If conventional cutting systems are used, then the structure is simpler, but the cutting precision and strategic blade positioning are insufficient
Solution Approach 1:
The rotating blade assembly features blades positioned at specific strategic locations around the circumference, with each blade optimized for its particular cutting position. This local quality approach ensures that cutting precision is maintained at each specific point of contact between the blade and plant material, while the overall system complexity is managed through modular design
3Ease of repair
If conventional cutting systems are used, then the device is easier to manufacture, but maintenance is cumbersome and accessibility is poor
Solution Approach 1:
The cutting system is segmented into removable components - the rotating blade assembly can be detached and serviced independently from the fixed shearbar. This segmentation provides excellent maintenance accessibility, allowing blades to be replaced or sharpened without disassembling the entire harvester, while the modular design does not significantly complicate the manufacturing process
Solution Approach 2:
The rotating blade assembly is designed as a separate, extractable unit that can be removed from the harvester for maintenance purposes. This extraction capability allows maintenance personnel to access and service the cutting components easily, resolving the contradiction between ease of repair and manufacturing simplicity by using standardized connection interfaces
4Volume of moving object
If a compact chopping module is integrated into the harvester, then space is saved and integration is improved, but the internal arrangement of the cutting system needs considerable improvement
Solution Approach 1:
The rotating blade assembly is nested within the box-shaped body of the chopping module, with the fixed shearbar positioned around it. This nesting arrangement achieves compactness by placing the rotating mechanism inside the structural housing, while the internal complexity is managed through careful spatial organization of the cutting components
Solution Approach 2:
The cutting action occurs in multiple dimensions - the rotating blades move in a circular path while the plant material is fed through the fixed shearbar in a linear direction. This multi-dimensional cutting approach maximizes the use of available space within the compact module, achieving high chopping efficiency without increasing the external dimensions of the device
Data Source
AI summary
A chopping module which pulls plants inside the module and chops them into billets, comprising a box-shaped body with three open sides, a front inlet for plants to be chopped, a rear outlet for chopped plants and a lower outlet for residues. Plants are pulled by two crosswise pairs of rollers, after which plants are chopped by a rotating blade assembly and a fixed shearbar, which are aligned parallel to the pulling rollers. Between the pulling rollers, a passageway is formed for the plants to be chopped. After the fixed shearbar, said passageway continues in the form of a slide sloping downwards to the rear outlet. The rotating blade assembly is located above the slide and next to the fixed shearbar.