Vibration-absorbing arrangement for stubble treatment frame
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Solution Overview
Problem
Devices for stubble treatment experience structural damage due to high-frequency vibrations from knife rolling segments, leading to cracks in the frame and inefficiencies in plant material cutting, as existing vibration-damping solutions either fail to adequately absorb vibrations or deform over time.
Innovation Solution
A vibration-absorbing arrangement comprising two symmetrically positioned vibration-absorbing elements between metal plates, with optional additional plates and resilient materials like elastomers or springs, effectively isolates the frame from vibrations, preventing cracks and reducing the need for reinforcements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If knife rolling segment operates at high speed to efficiently cut stubbles, then productivity is improved, but vibrations are generated that cause cracks in the frame structure
Solution Approach 1:
A vibration-absorbing arrangement consisting of resilient elements (springs or elastomers) positioned between the bearing and the frame acts as an intermediary to absorb and dampen vibrations generated by the high-speed knife rolling segment, preventing them from reaching and damaging the frame structure while allowing the segment to continue operating at high speed for efficient stubble cutting
2Reliability
If vibration-damping springs are used to reduce vibrations, then reliability is improved, but the springs get permanently deformed over time and stop performing optimally
Solution Approach 1:
The invention changes the material parameter from traditional metal springs to resilient elements made of elastomers or rubber-like materials that exhibit superior resistance to permanent deformation. These materials maintain their elastic properties and vibration-damping performance throughout their service life without the progressive degradation experienced by conventional spring elements
3Reliability
If blades are mounted slightly obliquely to reduce vibrations, then frame durability is improved, but shredding effectiveness of plant material is significantly reduced
Solution Approach 1:
The invention extracts the vibration-problematic function from the blade mounting configuration itself and relocates it to a dedicated vibration-absorbing arrangement. This allows the blades to be mounted at the optimal perpendicular angle for maximum shredding efficiency while the separate vibration-absorbing elements handle the vibration absorption, eliminating the need to compromise blade orientation
4Reliability
If the most sensitive parts of the construction are reinforced to mitigate vibrations, then local reliability is improved, but cracks will eventually form in other parts and the solution is not durable or economic
Solution Approach 1:
The invention segments the vibration management function from the overall frame structure by introducing separate, modular vibration-absorbing arrangements at critical locations. Instead of universally reinforcing the entire frame structure (which would increase complexity and weight), the vibration absorption is localized to specific bearing-mounting points where it is most needed, leaving the rest of the frame structure simple and economical
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
The solution provides enhanced durability and economic benefits by absorbing vibrations within the specified frequency range, preventing frame damage and maintaining effective stubble treatment performance without the need for additional reinforcements.
Implementation Method 1
said vibration-absorbing arrangement is adapted to isolate the frame from vibrations generated at the rolling segment and propagated to each bearing
Implementation Method 2
wherein said vibration-absorbing arrangement is at least partially made of a resilient material
Data Source
AI summary
The invention relates to a device (1) for stubble treatment once a crop has been harvested, which device (1) comprises a frame (2), wherein at least one knife rolling segment (3) is adapted to be coupled to said frame (2) through a pair of bearings (4) and to operate substantially horizontally, said device (1) further comprises a vibration- absorbing arrangement (14) for each bearing (4), which vibration-absorbing arrangement (14) is adapted to be mounted between a bearing (4) and a free-end of said frame (2), wherein said vibration-absorbing arrangement (14) is at least partially made of a resilient material, wherein said vibration-absorbing arrangement (14) is adapted to isolate the frame (2) from vibrations generated at the rolling segment (3) and propagated to each bearing (4). Also, the invention relates to a vibration-absorbing arrangement (14) adapted to be mounted to a device (1) for stubble treatment as described above.