Harvester Drum Contour Cuts for Tine Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing pick-up devices for harvesting and collecting machines face challenges in efficiently transferring load to the drum while being cost-effective and lightweight, as they often require additional components like retaining plates that increase weight and manufacturing costs.
Innovation Solution
The drum shell is contoured with inward or outward protrusions to form support bearings for the conveying tines, eliminating the need for additional retaining plates and allowing for direct attachment, which reduces weight and manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If additional retaining plates are attached to the drum shell for mounting conveying tines, then the conveying tines can be securely fastened, but the weight of the receiving device and manufacturing effort significantly increase
Solution Approach 1:
The support bearing is integrated directly into the drum shell as a unified component, eliminating the need for separate retaining plates. The drum shell and support bearing form a single structural element, reducing part count and overall weight while maintaining fastening security through the contour-cut geometry that directly engages the conveying tine base
Solution Approach 2:
The support bearing function is extracted from separate retaining plates and embedded directly into the drum shell structure. This integration removes the need for additional fastening components while preserving the load-bearing and positioning functions previously performed by separate plates
2Strength
If additional retaining plates are attached to the drum shell for mounting conveying tines, then the conveying tines can be securely fastened, but manufacturing effort and complexity significantly increase
Solution Approach 1:
The drum shell and support bearing are combined into a single integrated component, eliminating multiple assembly steps and reducing manufacturing complexity. The contour cuts are directly formed in the drum shell, removing the need for separate retaining plate fabrication and attachment operations
Solution Approach 2:
The support bearing function is extracted from separate retaining plates and embedded directly into the drum shell structure. This integration removes the need for additional fastening components while preserving the load-bearing and positioning functions previously performed by separate plates
3Strength
If conveying tines are fastened using conventional methods with additional components, then secure attachment is achieved, but load transfer to the drum is less efficient
Solution Approach 1:
The support bearing is integrated directly into the drum shell, creating a unified load path from the conveying tine through the support bearing and directly into the drum shell structure. This eliminates intermediate connection points and improves load transfer efficiency while maintaining attachment security through the contour-cut geometry
Data Source
Figure 1~3
Figure 4~10
AI summary
The invention relates to a drum 11 for a receiving device of a harvesting or collecting machine, comprising a drum shell (32) with an outer surface (12) and an inner surface (40). A plurality of conveying tines (13) are arranged on the drum (11), projecting beyond the outer surface (12) of the drum (11). In known drums, the attachment of the conveying tines is complex or not universally suitable for different drum shapes. To easily and securely fix conveying tines (13), particularly those made of flexible plastic, to the drum (11), contour cuts (33) are incorporated into the drum shell (32). These cuts have two endpoints (43, 44) and enclose a contoured area (51) which, through deformation, forms a support bearing (36) for the conveying tine (13), such that at least a portion of the contoured area (51) projects inwards or outwards beyond the outer surface (12).