Draper Belt Assembly With Retention Ribs to Prevent Crop Plugging
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Solution Overview
Problem
Conventional lateral draper belts in agricultural harvesters experience crop material plugging at the bottom due to smooth surfaces, leading to inefficiencies in crop distribution and collection.
Innovation Solution
The draper belt assembly features elongated prism-shaped members with sloped lateral faces and transverse lugs to inhibit crop material sliding and promote even distribution across the belt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a smooth draper belt surface is used, then the belt is easy to manufacture and clean, but crop material slides down to the bottom causing plugging
Solution Approach 1:
The draper belt surface is modified with elongated members that create localized retention zones. These members have sloped lateral faces that provide different surface characteristics in different locations - sloped to allow controlled movement and flat top surfaces to prevent sliding, thereby maintaining productivity while avoiding plugging issues
2Device complexity
If a smooth draper belt surface is used, then the belt structure is simple, but crop material accumulates at the bottom causing plugging
Solution Approach 1:
Rather than making the entire belt complex, only specific elongated members are added to create local retention features. These members are strategically positioned to intercept crop material before it can slide to the bottom, providing the necessary structural complexity only where needed to maintain productivity
3Productivity
If crop material is evenly distributed across the belt, then harvesting efficiency improves, but this requires complex belt surface features to prevent sliding
Solution Approach 1:
The elongated members with sloped lateral faces create localized retention zones that distribute crop material evenly across the belt width. The sloped faces guide material laterally while the flat tops prevent excessive sliding, achieving even distribution with minimal structural additions
Solution Approach 2:
The belt surface is segmented into multiple zones by the elongated members, each creating a localized retention area. This segmentation distributes crop material across different zones rather than allowing it to concentrate at the bottom, improving efficiency without requiring complete redesign of the entire belt surface
Data Source
AI summary
A draper belt assembly for an agricultural harvester header (100) comprising an endless draper belt (120) that includes an outer surface (322) and an inner surface (324) opposite the outer surface. The draper belt further includes elongated members (326) each extending from the outer surface and having a lateral face (328) substantially facing a longitudinal midline (ML) of the endless draper belt. The draper belt assembly additionally comprises a drive mechanism (332) operatively engaged with the endless draper belt. The lateral faces of the elongated members act as shelves that inhibit sliding of grain and other crop material from the bottom of the belt, thereby reducing plugging at the bottom of the belt adjacent the cutter bar and floor sheets. In addition, the elongated members more evenly distribute grain and other crop material across the width of the belt.