Round Baler Starter Roll Positioning for Consistent Bale Density
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Solution Overview
Problem
Existing round balers face challenges in maintaining high density of bales during formation, particularly after initial formation, which affects weight-to-size ratio, stackability, and air entrapment, especially for crops like silage.
Innovation Solution
A round baler with a starter roll positioned upstream of the inlet, moveable relative to the baling chamber's central axis, maintains a consistent minimum deformation distance into the bale as it grows, using a torque transmitting device and actuator to adjust its position based on bale size and density algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the starter roll is positioned fixed between the upper inlet roller and lower inlet roller to induce initial bale formation, then the initial bale formation is aided, but the bale density becomes inconsistent as the bale diameter increases during formation
Solution Approach 1:
The starter roll is made moveable relative to the central transverse axis of the baling chamber, allowing its radial position to be dynamically adjusted as the bale diameter increases during formation. This dynamic positioning maintains a consistent deformation distance into the bale, ensuring uniform density throughout the bale cross-section regardless of bale size.
2Device complexity
If the starter roll remains stationary while the bale diameter increases, then the device complexity is reduced, but the density of the crop material during bale formation becomes non-uniform
Solution Approach 1:
The starter roll positioning system is designed to move the starter roll radially as the bale diameter increases, maintaining a consistent deformation distance. This dynamic adjustment ensures uniform crop material density throughout the bale while managing the complexity through integrated control with the variable chamber system.
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 design ensures consistent bale density throughout the cross-section by maintaining a minimum deformation distance, enhancing weight-to-size ratio, stackability, and reducing air entrapment, thereby improving efficiency and storage quality.
Implementation Method 1
The torque transmitting device is configured for transmitting torque from the upper inlet roller to the starter roll to rotate the starter roll about a respective axis of rotation of the starter roll
Implementation Method 2
the starter roll radially deforming an exterior circumferential surface of the bale inward toward a center of the bale a minimum deformation distance
Data Source
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AI summary
A round baler includes a forming belt defining a baling chamber having an inlet through which crop material enters. A belt tensioning system includes a tension arm and a plurality of moveable rollers that move for maintaining tension in a forming belt while allowing a diametric size of the bale to increase during formation. A starter roll is positioned immediately upstream of the inlet relative to a rotational direction of the bale within the baling chamber during formation. The starter roll is moveable during bale formation in a direction at least partially directed toward a central transverse axis of the baling chamber to maintain a constant inward deformation distance into an exterior circumferential surface of the bale as the diametric size of the bale increases during formation.