Mower Disc Scraper Segmentation for Maintenance
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Solution Overview
Problem
Existing mowing devices face challenges with scraper wear and tear, leading to decreased cleaning effectiveness and complex, costly replacement processes, limiting material choice and adjustability for different crop types and conditions.
Innovation Solution
A detachable scraper arrangement between the spring plate and mower disc, allowing for independent replacement and adjustment, enabling quick maintenance and the use of various materials without requiring entire disc replacement, with options for height adjustment and directional alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If scrapers are welded or inseparably connected to the mower disc, then the scraper is securely fixed, but replacement becomes complex, costly and time-consuming
Solution Approach 1:
The scraper is divided into a separate replaceable component that can be independently removed from the mower disc. The scraper features mounting holes that allow it to be detached and replaced without affecting the mower disc itself, resolving the contradiction between secure fixation and ease of replacement.
Solution Approach 2:
The scraper design transitions from a static welded connection to a dynamic removable connection. The scraper can be quickly mounted or removed by simple fastening operations, allowing the system to adapt between secure operation and easy maintenance states.
2Manufacturing precision
If the entire mower disc must be replaced to change scrapers, then scraper alignment is guaranteed, but maintenance time and cost increase significantly
Solution Approach 1:
The scraper is segmented as an independent component with pre-drilled mounting holes that align with corresponding holes in the mower disc. This segmentation allows the scraper to be precisely aligned and mounted without replacing the entire mower disc, reducing maintenance time while maintaining alignment precision.
3Ease of manufacture
If scrapers are permanently attached to the mower disc, then material choice is limited by weldability requirements, but attachment simplicity is improved
Solution Approach 1:
The scraper is designed as a separate component with mounting holes, eliminating the need for welded connections. This segmentation allows selection of materials based on cleaning performance and cost rather than weldability, significantly expanding material versatility while maintaining simple attachment through mechanical fastening.
4Manufacturing precision
If the mower disc is replaced to adjust scraper configuration, then scraper positioning is optimized, but productivity is reduced due to disc replacement complexity
Solution Approach 1:
The scraper is segmented as an independent replaceable component rather than being permanently attached to the mower disc. This allows quick replacement and repositioning of scrapers without the complex procedures required for mower disc replacement, significantly improving maintenance efficiency while maintaining positioning precision through pre-drilled mounting holes.
5Stability of the object's composition
If scrapers are designed as integral parts of the mower disc, then structural integrity is maintained, but adaptability for different crop types is lost
Solution Approach 1:
The scraper is segmented as a separate component that can be independently replaced or repositioned on the mower disc. This segmentation maintains the structural integrity of the mower disc while allowing adaptation of scraper configuration for different crop types and mowing conditions, achieving both structural stability and operational versatility.
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
Facilitates efficient and cost-effective scraper maintenance, extends scraper lifespan, and allows for adaptable operation with either direction of rotation, enabling the use of wear-resistant or inexpensive materials based on need.
Implementation Method 1
The scraper is pressed by the spring plate against the underside of the mower disc
Implementation Method 2
accumulating cuttings or other adhering residues are scraped off or scraped off the surface of the cutter bar
Data Source
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AI summary
A cutter rotor (20) of a cutter bar (18) of a mower (10) is proposed. The cutter rotor (20) comprises a mowing disc (22), at least one mowing blade (24), at least one bearing pin (28) attached to the mowing disc (22) for pivotally mounting the mowing blade (24), a spring plate (32) arranged on the underside of the mowing disc (22) for retaining the mowing blade (24) on the bearing pin (28), and at least one scraper (80) for removing residues adhering to the cutter bar (18), wherein the scraper (80) is arranged between the spring plate (32) and the underside of the mowing disc (22) and is detachably attached to the mowing disc (22) between the bearing pin (28) and a rotation axis (88) of the mowing disc (22). Furthermore, a clamping tool (108) for replacing a mower blade (22) on a blade rotor (20) and a mower with such a blade rotor (20) are proposed.