Hydraulic Flotation Raking Groups for Uneven Ground Windrowing
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Solution Overview
Problem
Agricultural raking machines struggle to maintain a consistent distance from the ground over uneven terrain, leading to uneven material collection and comb wear due to swinging and contact with obstacles.
Innovation Solution
An agricultural raking machine with flotation means and adjustable raking groups that use hydraulic actuation to maintain a constant distance from the ground, allowing adaptation to terrain variations and preventing comb contact with obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the combs are positioned close to the ground to maximize material collection, then the quantity of collected material increases, but the combs inevitably wear out or break due to contact with obstacles on uneven terrain
Solution Approach 1:
The raking groups are made dynamically adjustable in height and orientation through hydraulic actuators. The system continuously adapts the position of raking groups relative to the ground surface, allowing them to maintain optimal working distance on uneven terrain without contact with obstacles, thus preventing wear and breakage while maintaining collection efficiency
Solution Approach 2:
The system employs sensors to detect the distance between the combs and the ground surface in real-time. This feedback information is used by the control unit to automatically adjust the height and orientation of raking groups via hydraulic actuators, ensuring consistent material collection density and preventing comb contact with obstacles
2Adaptability or versatility
If the frame passes over rough terrain, then the machine can operate on uneven ground, but the combs swing and vary their distance from the ground causing uneven material density in the windrow
Solution Approach 1:
Each raking group is equipped with independent hydraulic actuators that dynamically adjust the position and orientation of the combs. This dynamic adjustment compensates for ground unevenness and maintains constant comb-to-ground distance, ensuring uniform material density throughout the windrow even on rough terrain
Solution Approach 2:
The raking machine is divided into multiple independently controllable raking groups. Each group can be individually adjusted in height and orientation, allowing precise compensation for local terrain variations and ensuring uniform material collection across the entire working width
3Manufacturing precision
If flotation means are added to maintain constant comb distance from ground, then material collection consistency improves, but device complexity increases
Solution Approach 1:
The system uses hydraulic actuators connected to the tractor's existing hydraulic system to control the height and orientation of raking groups. This hydraulic flotation mechanism maintains constant comb-to-ground distance without requiring complex mechanical suspension systems, achieving precision through fluid power control
Solution Approach 2:
The hydraulic actuators serve multiple functions: they control both the vertical height and the tilt orientation of each raking group. This multi-functionality reduces the need for separate adjustment mechanisms, simplifying the overall structure while maintaining precise control over comb position
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
Ensures consistent material collection density and reduces comb wear by maintaining a constant distance from the ground, even on rough terrain, while being easily connectable to existing tractor systems.
Implementation Method 1
meant to float the raking groups with respect to the supporting arms in a working configuration
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The agricultural raking machine (1) comprises: a frame (2) configured to be towed by a towing vehicle; at least a raking group (3) assembled on the frame (2) and provided with rotating comb-like elements (4) apt to move material mowed onto the ground to form a windrow; flotation means (5, 6) associated to the raking group (3) and to the frame (2), the configuration being so that, at variations in height from the ground, the raking group (3) raises/lowers with respect to said frame (2).