Soil Working Implement Asymmetric Disc Offset
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Solution Overview
Problem
Existing soil tillage devices face issues with uneven soil working, blockages, and inadequate soil flow guidance, leading to the need for additional tillage operations to achieve an evenly worked field, especially at high working speeds and with worn discs.
Innovation Solution
The design incorporates a smaller concave disc in the central area of the front frame part, allowing larger discs with stable bearings to be arranged closer together while maintaining an optimal obtuse angle with the ground, and offsetting one concave disc to prevent blockages, along with the use of hold-down devices to guide soil and ensure smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the concave discs are arranged with optimal spacing and angle, then the soil is worked evenly across the entire width, but blockages occur in the central area due to insufficient free space
Solution Approach 1:
The patent applies asymmetry by arranging the central concave discs at different positions along the longitudinal axis, creating an asymmetric configuration that prevents soil blockages while maintaining even soil working across the working width
Solution Approach 2:
The patent resolves the blockage problem by transitioning from a two-dimensional spacing problem to a three-dimensional solution, utilizing the longitudinal dimension (front-to-back positioning) to create sufficient free space for soil flow while maintaining optimal lateral spacing for even soil working
2Productivity
If the concave discs are made larger to increase working width coverage, then the working efficiency improves, but the bearings become unstable and the discs cannot maintain the optimal angle
Solution Approach 1:
The patent divides the working width coverage into multiple smaller concave discs arranged in sequence, where each disc maintains stable bearings while collectively covering the entire working width, thereby preserving both productivity and bearing stability
3Manufacturing precision
If the angle of the concave discs is changed to process the central area, then the central strip is tilled, but the discs generate buoyancy that cannot be overcome in harder ground conditions
Solution Approach 1:
The patent applies local quality by maintaining the optimal obtuse angle for all concave discs except the central ones, which have modified angles specifically adapted to their location, allowing them to process central soil while maintaining sufficient downward force through their specific geometric configuration
4Manufacturing precision
If one rear concave disc is offset forward to process the unprocessed strip, then the soil cultivation is more even, but clearance problems arise and blockages cannot be prevented
Solution Approach 1:
The patent applies asymmetry by offsetting the central concave discs from the symmetric arrangement, creating an asymmetric configuration that provides sufficient clearance for soil flow while maintaining even soil cultivation across the working width
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
This configuration ensures even soil distribution and working across the entire width, prevents blockages, and maintains effective tillage depth without additional tillage requirements, even at high speeds and with worn discs.
Implementation Method 1
They generate a buoyancy that can only be overcome by the weight of the device and the pull-in behavior of the remaining concave discs
Data Source
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AI summary
The invention relates to a floor-treating appliance having two frame parts which are arranged transversely, and one behind the other, and on which are arranged hollow discs which are mounted such that they can be rotated separately one beside the other, wherein the hollow discs of the one frame part have the concave sides oriented obliquely forwards and outwards, as seen in the direction of operation, and the hollow discs of the other frame part have the concave sides oriented obliquely forwards and towards the centre, as seen in the direction of operation, and wherein the chords of the concave sides of the hollow discs are arranged so as to enclose an obtuse angle with the floor surface, wherein the respective two hollow discs which, in a central region, have their concave sides or their convex sides oriented towards one another are designed such that in each case one of these hollow discs has a smaller diameter and is offset in relation to the adjacent hollow discs, as seen in the direction of operation.