Soil Cultivation Roller Cutting Tool Attachment
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Solution Overview
Problem
Existing soil cultivation devices face issues with soil deposition between cutting tools, leading to reduced rotation and functional failure, and require time-consuming and costly assembly and disassembly of cutting tools.
Innovation Solution
The cutting tools are designed to be approximately half the length of the roller, with pairs aligned in the middle and an air gap between them, allowing for relative movement and preventing soil deposition, and can be laterally inserted and secured with fewer screws, simplifying replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cutting tools are attached to the roller to penetrate and shred plant residues, then soil cultivation effectiveness is improved, but soil accumulates between cutting tools causing reduced rotation and functional failure
Solution Approach 1:
The cutting tools are designed with longitudinal movement capability along the roller surface, allowing them to dynamically adjust their position. This movement creates variable spacing between tools during operation, preventing soil accumulation in fixed gaps and maintaining reliable roller rotation while continuing effective soil cultivation.
2Strength
If cutting tools are secured with many screws to withstand transmission forces, then structural strength is improved, but assembly and disassembly becomes time-consuming and costly
Solution Approach 1:
The attachment system is segmented into modular components: the cutting tool body with integrated mounting features, and corresponding receptacles on the roller. This segmentation allows the tool to be attached and detached as a single unit without requiring multiple fastening operations, reducing replacement time while maintaining structural strength through the segmented design.
Solution Approach 2:
The cutting tools are designed as easily replaceable components with simplified attachment mechanisms, accepting that they are wear parts that will eventually need replacement. The focus shifts from creating permanent, heavily fastened attachments to enabling quick, cost-effective replacement of short-lived cutting edges, reducing both time and cost losses.
Data Source
Figure 1
Figure 2~3
Figure 4~6
AI summary
In a device (1) for soil cultivation, in particular for shredding plant residues (3) in a subsoil (2), consisting of: - a frame (4) attached to a tractor (5) movable in a direction of travel (6), and - at least one roller (7) rotatably mounted on the frame (4), which runs transversely to the direction of travel (6) of the frame (4) and on which at least one cutting tool (8) is provided, the deposit of soil in the spaces between two adjacent cutting tools (8) should be prevented and the installation and removal of the cutting tools (8) on the roller (7) should be able to be carried out in a cost-effective and time-saving manner.This is achieved by providing a groove-, dovetail- or box-shaped receiving opening (11) in the roller (7) for each of the cutting tools (8), by providing a profile (12) on each of the cutting tools (8) that corresponds to the cross-section of the receiving opening (11) and can be inserted into it, by providing a clearance (21) between the profile (12) and the inner wall of the receiving opening (11) in its assembled state, and by providing that the respective cutting tool (8) is supported on the roller (7) so as to be movable about a predetermined pivoting angle (a).