Mounted Plough Pivot Point Preloading for Tractor Traction
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Solution Overview
Problem
Existing mounted plows face challenges in increasing traction on tractors without requiring specific configurations of the tractor hydraulics, particularly on older models with conventional top links that cannot be hydraulically preloaded, and existing systems for traction control are complex and difficult to coordinate with different types of tractors and plows.
Innovation Solution
Integration of a pretensioning device into the headstock that movably mounts the upper and lower link pivot points, allowing for elastic pretensioning and weight transfer to the tractor's rear wheels, eliminating the need for hydraulically pre-tensioned upper links and pressure control, while enabling ground adjustment and increased traction without special adaptations to the tractor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional upper link with play in the articulation is used, then ground adaptation is enabled, but weight transfer from the plow to the tractor is prevented
Solution Approach 1:
A bearing rocker is introduced as an intermediary element between the upper link and the headstock. This bearing rocker serves as a mediator that allows relative movement (ground adaptation) while maintaining continuous contact and force transmission (weight transfer). The bearing rocker pivots on the headstock and carries the upper link articulation point, enabling the plow to rock for ground adaptation while the pretensioning device keeps the bearing rocker pressed against the headstock, ensuring weight transfer.
2Force
If a length-adjustable hydraulic cylinder is used as the upper link, then weight transfer and traction increase are achieved, but coordination problems with different tractors and plows occur
Solution Approach 1:
The system is segmented into separate functional components: the bearing rocker handles ground adaptation movements, the pretensioning device handles weight transfer, and the upper link provides structural connection. This segmentation allows each component to be optimized independently and makes the system compatible with different tractor and plow configurations, eliminating coordination problems.
Solution Approach 2:
The bearing rocker serves multiple functions: it allows ground adaptation movements, maintains continuous force transmission for weight transfer, and provides a standardized interface that can work with different tractor and plow types. This multi-functionality makes the system universally applicable without requiring specific tractor hydraulic configurations.
3Force
If the upper link is rigidly connected to the headstock, then weight transfer is maximized, but ground adaptation capability is lost
Solution Approach 1:
The connection between the headstock and upper link is made dynamic through the bearing rocker mechanism. The bearing rocker can pivot relative to the headstock, allowing the connection to adapt its geometry during operation. This dynamic connection maintains force transmission while accommodating the rocking movements needed for ground adaptation, resolving the contradiction between rigidity and flexibility.
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 solution enhances tractor utilization, reduces slippage, saves fuel, and protects the soil by ensuring constant weight transfer to the rear wheels, improving traction and pulling power without needing special tractor adaptations, and can be retrofitted to conventional mounted plows for increased efficiency.
Implementation Method 1
a pretensioning device for elastic pretensioning of the movably mounted pivot point relative to the headstock
Implementation Method 2
a pretensioning device for elastic pretensioning of the movably mounted pivot point relative to the headstock in a relief position, with the pretensioning force being such that when the plow is in the lowered working position, the rear plow thereby relieving the pretensioning force of the pretensioning device
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The plough has a cultivation trestle (2) with upper and lower linkage pivot points (5, 6) for attachment of upper and lower linkages fastened to a tractor. One of the upper and lower linkage pivot points is movably supported by a pivot point support device (9) against the trestle. A preloading device (10) is provided in a loading position for preloading of the pivot point (5) against the trestle, in which a driving force is induced in a lowered operating position of the plough at the upper linkage. A plough rear end is unloaded in the lowered operating position of the plough.