Baler Sensor Placement Near Reinforcement Beams
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Solution Overview
Problem
In agricultural balers, moisture and friction sensors mounted on the sidewalls between the inlet and actuators become inaccurate due to deformation caused by high pressure during the bale forming process, leading to unreliable measurements.
Innovation Solution
The sensors are placed in the immediate vicinity of reinforcement means such as transversal support beams, ridges, or longitudinal beams, which neutralize or limit the outward deformation of the sidewalls, ensuring accurate friction and moisture measurements by maintaining consistent pressure on the sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are mounted on sidewalls between inlet and actuators, then sensors can detect friction and moisture during bale formation, but sidewall deformation under high pressure causes measurement inaccuracy
Solution Approach 1:
The patent applies local quality by positioning sensors at specific locations where sidewall deformation is minimized. The sensors are placed in zones between reinforcement means (such as longitudinal beams or rings) where the sidewall structure provides greater stability and resistance to bulging, ensuring accurate measurements without requiring the entire sidewall to be rigid
Solution Approach 2:
The patent introduces reinforcement means (longitudinal beams, rings, or structural elements) as intermediaries between the high-pressure bale formation zone and the sensor mounting locations. These reinforcement elements act as mediators that prevent deformation from propagating to the sensor zones, isolating the sensors from the harmful mechanical stresses
2Productivity
If actuators apply high force on sidewalls to compress bale, then bale density increases, but sidewall bulging deformation increases causing sensor inaccuracy
Solution Approach 1:
The patent segments the sidewall into different functional zones: high-compression zones where actuators apply force to the bale, and sensor-protected zones reinforced with beams or rings where deformation is minimized. This segmentation allows the sidewall to simultaneously accommodate high compression forces while preserving accurate sensor measurement locations
Solution Approach 2:
The patent implements local quality by providing selective reinforcement at sensor locations rather than uniformly strengthening the entire sidewall. This allows high compression forces to be applied where needed for bale density while maintaining structural stability only at the critical sensor mounting zones
Data Source
AI summary
An agricultural baler for producing rectangular bales, having a reciprocating plunger moving back and forth in the enclosure formed by walls, thereby compressing crop material and forming rectangular bales, and further including at least one actuator for adapting the cross-section of the enclosure depending on the required pressure that needs to be exerted on the advancing bale. Actuators can apply their force on the sidewalls along transversal support beams or brackets forming the ‘density belt’. The baling chamber is provided with one or more friction or moisture sensors which are placed at the location or in the immediate vicinity of one or more side wall reinforcements.