Baling Roller Projections for Round Bale Shape Control
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Solution Overview
Problem
Agricultural round balers face issues with crop accumulation on side areas during dry harvesting, leading to irregular bale shapes and wrapping problems due to insufficient pressing forces at the end areas of the baling rollers.
Innovation Solution
The baling rollers feature elevations on their lateral surfaces with greater radial extension at the end areas compared to the middle, ensuring stronger pressing forces are applied, maintaining a cylindrical bale shape and facilitating proper net wrapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform radial projections are used on baling rollers, then the baling roller structure is simple and easy to manufacture, but crop material accumulates on the sides of the round bale causing irregular bale shapes
Solution Approach 1:
The baling roller projections are designed with varying radial heights along the axial direction: higher at the end regions and lower in the middle section. This local differentiation allows the end regions to exert stronger pressing forces to prevent crop accumulation and maintain cylindrical bale shape, while the middle section maintains sufficient but not excessive pressing force.
2Shape
If stronger pressing forces are applied at the end regions of the baling roller, then crop accumulation is prevented and bale shape is maintained, but the baling roller structure becomes more complex
Solution Approach 1:
The radial height parameter of the projections is changed along the axial direction of the baling roller, creating a gradient distribution where projections at the end regions have greater radial extent than those in the middle section. This parameter variation enables differentiated pressing forces without requiring multiple separate components or complex adjustment mechanisms.
Data Source
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AI summary
A baling roller (26) for an agricultural round baler (10) and a round baler (10) with such a baling roller (26) are proposed. The baling roller comprises a roller body (36) with a lateral surface (38) that encloses the circumference and length of the roller body (36). Furthermore, radially extending projections (42) are arranged on the lateral surface (38) over the circumference and length of the roller body (36). To optimize the pressing effect of the baling roller, it is proposed that the projections (42) on the lateral surface (38) have a greater radial extent at the end regions (46, 48) of the roller body (36) than in a region (50) of the roller body (36) located between the end regions (46, 48).