Starter Roller and Blocking Bar for Uniform Bale Formation
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Solution Overview
Problem
Existing agricultural harvesters face challenges in maintaining uniform thickness of agricultural product mats during the baling process, leading to density variations in bales and inefficiencies in downstream logistics.
Innovation Solution
A mat leveling system with movable outlet rollers and a blocking bar is introduced to stabilize the thickness of the agricultural product mat, reducing variations and enhancing uniformity, while a starter roller initiates bale formation and a blocking bar prevents upstream movement of product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If fixed outlet rollers are used to support the belts, then the structure is simple, but the mat thickness varies due to belt sagging and product accumulation
Solution Approach 1:
The outlet rollers are made movable rather than fixed, allowing them to dynamically adjust their position in response to belt tension and product accumulation. The mounting assemblies enable the rollers to move vertically to maintain optimal contact with the belts, ensuring consistent mat thickness while accommodating varying operational conditions.
Solution Approach 2:
The system implements a mechanical feedback mechanism where the outlet rollers automatically adjust their position based on the state of the belts and accumulated product. As belts sag or product accumulates, the rollers move to maintain proper tension and contact, creating a self-regulating system that maintains mat uniformity without external control.
2Productivity
If the starter roller is positioned close to the first belt, then bale formation is efficient, but agricultural product can pass through the gap causing accumulation and plugging
Solution Approach 1:
The blocking bar serves as an intermediary element positioned between the starter roller and the first belt. It prevents agricultural product from passing through the gap upstream while allowing the starter roller to maintain its efficient position for bale formation. The blocking bar mediates between the conflicting requirements of proximity for efficiency and separation for reliability.
3Manufacturing precision
If the outlet rollers are moved to level the mat, then mat thickness uniformity improves, but the mounting structure becomes more complex
Solution Approach 1:
The mounting assemblies are designed to enable dynamic movement of the outlet rollers rather than requiring complex adjustable mechanisms. The rollers can move vertically along guided paths, allowing mat leveling through simple positional adjustment while maintaining structural simplicity through constrained motion paths.
Data Source
AI summary
A conveying system for an agricultural harvester includes a first belt and a second belt. The first belt and the second belt are configured to transport agricultural product along a downstream direction toward a cavity. The conveying system also includes a starter roller spaced apart from the first belt by a gap along a vertical axis. The starter roller is configured to initiate formation of a bale of the agricultural product within the cavity. Furthermore, the conveying system includes a blocking bar positioned proximate to the first belt and to the starter roller. A vertical extent of the blocking bar at least partially overlaps the gap with respect to the vertical axis, and the blocking bar is configured to block the agricultural product within the cavity from passing through the gap along an upstream direction.