Cultivator Disc Orientation for Level Soil Excavation
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Solution Overview
Problem
Agricultural disc implements, particularly those with X-shape configurations, face challenges in maintaining a level soil surface and stability while cultivating, as the center discs work deeper due to raised soil between tractor wheels, leading to uneven excavation and potential ridges or troughs.
Innovation Solution
The points of change for disc implement rows are displaced at least half a meter towards the tractor's wheel tracks, maintaining the X-shape configuration while ensuring discs balance each other, thus improving soil levelness and stability without additional material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the machine is constructed with X-shape configuration, then the machine runs stably and straight behind the tractor, but it is difficult to get uniform excision in the centre and the soil surface becomes uneven with ridges or troughs
Solution Approach 1:
The disc implement rows are segmented into fore row and rear row with distinct functions. The fore row discs are positioned to break up soil while the rear row discs level the soil surface. This segmentation allows each row to specialize in its function, resolving the contradiction between stability and surface levelness.
Solution Approach 2:
Different parts of the machine have different disc orientations and functions. The fore row has discs oriented for soil breaking while the rear row has discs oriented for leveling. This local differentiation of quality allows the machine to simultaneously achieve stability through X-shape configuration and uniform excision through specialized local functions.
2Quantity of substance
If the discs in the centre of the machine work deeper due to raised soil between tractor wheels, then more soil is handled in the centre, but it becomes more difficult to get good excision and levelness behind the centre
Solution Approach 1:
The machine applies different disc configurations to different locations. In the centre where soil is raised, the fore row breaks up the additional soil while the rear row levels it. At the sides where soil is not raised, the discs work with normal depth. This local adaptation resolves the contradiction between handling raised centre soil and maintaining uniform excision.
3Manufacturing precision
If the machine is constructed with V-shape arrangement, then it is easier to get a flat surface behind the machine, but the machine runs obliquely or unstably due to unbalanced lateral forces
Solution Approach 1:
The machine uses asymmetric X-shape configuration where the fore row and rear row have different disc orientations and functions. The fore row discs are oriented for soil breaking while the rear row discs are oriented for leveling. This asymmetric arrangement provides both stability through force balance and surface levelness through functional specialization.
Solution Approach 2:
The disc implement is segmented into two distinct rows with different functions. The fore row handles soil breaking while the rear row handles leveling. This segmentation allows the machine to achieve both stability and flat surface, resolving the contradiction present in V-shape arrangements.
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The invention refers to an agricultural machine (101; 201; 301) comprising two mainly parallel, in the direction of travel cross-running disc implement rows (102a, 102c; 202a, 202b; 304a, 304b), wherein the orientation of the disc implements (102b, 102d; 203a, 203b; 302a, 302b) contained in the mentioned disc implement rows is arranged so that the fore row (102a; 202a; 304a) has disc implements that are mounted on a frame beam (110; 211; 303) and that are angled outwards backwards towards the sides of the machine and in a dividing line mainly parallel to the direction of travel of the machine form a first point of change (208a, 304c), and the rear row (102c, 202b; 304b) has disc implements (102d; 203b; 302b) that are mounted on a frame beam (110; 211; 303 ) and that are angled inwards backwards from the sides of the machine and in the dividing line form a second point of change (208b, 304a), wherein the fore row is adapted to throw soil from the first point of change outwards towards the sides of the machine and the other row is adapted to throw soil from the sides of the machine inwards towards the second point of change. The dividing line with the first point of change (208a, 304c), and with the second point of change (208b, 304) is arranged at a predetermined distance from the centre line of the machine (101; 201; 301) across the direction of travel.