Beet Puller Share with Curved Cutting Elements
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Solution Overview
Problem
Beet lifting coulters experience abrasive wear and sharp-edged shoulders form due to washing out processes between hard material elements and the base part, leading to injury of beets and reduced harvest quality.
Innovation Solution
Designing hard material elements as cutting elements with convexly curved deflection surfaces that merge into the beet guidance zone, providing a clearance angle and reducing the risk of deposit formation, and using a forged base part with a shell-like structure for enhanced durability and load transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hard material elements are used to protect the base part in the cutting area, then wear resistance is improved, but sharp-edged shoulders develop due to washing out processes, causing beet injury and reduced harvest quality
Solution Approach 1:
The deflection surface of the cutting elements is designed to be convexly curved and merges into the convexly curved beet guiding zone, eliminating sharp edges and transitions that cause beet injury while maintaining wear protection
2Manufacturing precision
If hard material elements are arranged in the cutting area, then cutting edge sharpness is maintained, but washing out processes create sharp-edged shoulders that injure beets
Solution Approach 1:
The convex curvature of the deflection surface and beet guiding zone eliminates sharp transitions and washing out processes, maintaining cutting edge sharpness without creating injurious sharp-edged shoulders
Solution Approach 2:
The cutting elements are positioned and shaped to provide localized protection and cutting function only where needed, with curved surfaces that prevent deposit formation in transition areas
3Reliability
If the base part is exposed in the sealing area, then deposits form due to washing-out processes, but covering it increases complexity
Solution Approach 1:
The convexly curved beet guiding zone merges with the deflection surface to create a clearance angle, preventing exposure of the base part in the sealing area and eliminating deposit formation without additional complex structures
Solution Approach 2:
The deflection surface and beet guiding zone are merged into a single convexly curved surface, simplifying the structure while preventing washing out processes and deposit formation
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
The solution extends the service life of the beet lifting coulter, maintains sharpness of the cutting edge, reduces wear, and enhances harvest yield by minimizing damage to beets and optimizing machine output.
Implementation Method 1
the deflection surface of at least one cutting element is convexly curved and merges into the convexly curved beet guiding zone, in particular the beet squeezing zone. This geometric design improves the drainage of both the soil and the extracted beet
Data Source
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AI summary
The invention relates to a beet puller share comprising a base part having a cutting edge, wherein one or more elements made of hard material are arranged near the cutting edge, said elements forming discharge faces on their upper sides, wherein the discharge faces transition into a flat portion of the base part and wherein said flat portion forms a beet guiding zone, in particular a beet ejecting zone. To improve the useful life of the beet puller share and, associated therewith, to improve harvest yields, the invention provides for the hard material elements to be in the form of cutting elements which at least in parts form the cutting edge and for the discharge face of at least one cutting element to be convexly curved and to transition into the convexly curved beet guiding zone, in particular the beet ejecting zone.