Haymaking Lightening Cylinder Deflection to Avoid Tractor Collision
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Solution Overview
Problem
Existing agricultural machines with lightening devices risk damaging the tractor vehicle and machine due to the lightening cylinder pivoting about the front articulation, causing the anchoring point to hit the vehicle during configuration changes.
Innovation Solution
A deflection system is implemented to pivot the anchoring point of the lightening cylinder away from the midplane of the work unit, preventing contact with the tractor vehicle by adjusting the distance between the fastening point and the front articulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the lightening cylinder is used to transfer weight onto the chassis in work configuration, then the work unit can be stabilized on the ground, but the anchoring point may hit the tractor vehicle during configuration changes
Solution Approach 1:
The patent introduces a deflection system that allows the anchoring point to move not only vertically but also laterally away from the midplane of the work unit. This dimensional change in the movement path of the anchoring point prevents collision with the tractor vehicle while maintaining the weight transfer function.
Solution Approach 2:
The deflection system acts as an intermediary mechanism between the lightening cylinder and the tractor vehicle. It mediates the movement of the anchoring point, guiding it away from the midplane to prevent direct contact with the vehicle during configuration changes.
2Force
If the distance between fastening point and front articulation is greater in work configuration, then weight transfer is improved, but the lightening cylinder may pivot excessively during transport
Solution Approach 1:
The patent makes the system dynamic by allowing the anchoring point to move laterally through the deflection system during configuration changes. This dynamic adjustment enables the system to adapt to different operational states (work vs. transport) safely, preventing excessive pivoting while maintaining optimal weight transfer when needed.
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
Prevents damage to the tractor vehicle and machine by ensuring the lightening cylinder does not hit the chassis during configuration changes, maintaining consistent weight transfer and reducing the risk of collision.
Implementation Method 1
the lightening cylinder being able to transfer, in the work configuration, at least some of the weight of the work unit onto the chassis
Implementation Method 2
at least one deflection system makes it possible to move the lightening cylinder by pivoting the anchoring point about the front articulation so as to move the anchoring point away from the midplane of the work unit
Implementation Method 3
gravity then causing the lightening cylinder to pivot about the front articulation
Data Source
AI summary
An agricultural machine is coupled to a tractor vehicle and includes a work unit connected to a chassis relative to which the work unit can be moved, the machine being able to take up a work configuration and a transport configuration. The machine includes a lightening device having a lightening cylinder connected to the chassis by a flexible compression tie-rod on one side and to the work unit at a front articulation on the other side, the lightening cylinder being able to transfer, in the work configuration, some of the weight of the work unit onto the chassis, the flexible compression tie-rod being attached with the lightening cylinder at an anchoring point and with the chassis at a fastening point, a deflection system making it possible to move the lightening cylinder by pivoting the anchoring point about the front articulation so as to move it away from the midplane.