Movable Wall Transverse Compression for High-Density Bales
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Solution Overview
Problem
Agricultural balers face a dilemma in achieving high bale density without significantly affecting throughput or increasing the load on the plunger driving mechanism, as existing technologies require a trade-off between density and efficiency.
Innovation Solution
The implementation of a movable wall in the baling chamber that applies transverse compression to the bale during the power movement of the plunger, with a controller adjusting the compression force to reduce the force peak necessary for initiating the bale's propelling, allowing for high-density bale formation without excessive strain on the plunger.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If transverse compression force is increased to achieve high bale density, then bale density is improved, but the force peak for initiating bale propelling increases excessively
Solution Approach 1:
The movable wall applies transverse compression force periodically during the power movement of the plunger, with the force being applied only during specific phases of the compression cycle. This periodic application allows the bale to be compressed to high density during the compression phase, then the force is reduced or removed to allow easy propelling during the ejection phase, thus resolving the contradiction between achieving high density and minimizing the force peak for propelling
Solution Approach 2:
The movable wall is designed to be movable rather than fixed, allowing it to dynamically adjust its position and the magnitude of transverse compression force during the plunger's power movement. This dynamic adjustment enables the system to apply high compression force when needed for density, then reduce the force when propelling is required, thereby resolving the force density contradiction
2Manufacturing precision
If plunger force is increased to achieve high density, then bale density is improved, but the load on the plunger driving mechanism increases
Solution Approach 1:
The compression function is segmented between the plunger (providing longitudinal compression) and the movable wall (providing transverse compression). This segmentation allows the transverse compression component to contribute to bale density without requiring the plunger driving mechanism to provide excessive force, as the movable wall shares the compression workload through its transverse compression action
Solution Approach 2:
The movable wall applies transverse compression force periodically during the power movement, synchronizing with the plunger's compression cycle. This periodic application ensures that high compression forces are applied only when necessary for density formation, rather than continuously, thereby reducing the overall power demand on the plunger driving mechanism while still achieving high bale density
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 enables the production of high-density bales with reduced force requirements for the plunger, maintaining bale density while minimizing the torque needed for the drive line, thus enhancing operational efficiency without the need for gearbox strengthening.
Implementation Method 1
at least one movable wall for exercising a compression force to the crop material in a direction transverse to the propelling movement
Implementation Method 2
a controller adapted to influence said compression force at a predetermined moment of the power movement to reduce said counter pressure
Data Source
AI summary
An agricultural baler with a pre-compression chamber configured to introduce a slice towards a baling chamber. The baling chamber includes a plunger provided for reciprocally moving in the baling chamber, the reciprocal movement having a power movement. In use, during the power movement, slices of crop material are compressed into a bale and the bale is pushed through the baling chamber. The baling chamber further includes at least one movable wall for exercising a compression force to the crop material in a direction transverse to the propelling movement so that, in use, the at least one movable wall provides a counter pressure for the propelling through the baling chamber of the bale. The agricultural baler further includes a controller adapted to influence a compression force of the at least one movable wall at a predetermined moment of the power movement to reduce the counter pressure.