Segmented Threshing Cylinder Support for Rigidity and Weight Reduction
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Solution Overview
Problem
Conventional threshing cylinders face issues with rigidity and weight, leading to potential threshing failures and difficult assembly due to the need for increased rigidity and long support members, which also complicate handling and mounting of intermediate support members.
Innovation Solution
A threshing cylinder design with divided threshing teeth support members, where the front-side and rear-side support members are shorter and supported by different intermediate members, allowing for easier assembly and reduced weight while maintaining high rigidity, and an intermediate support member that is securely attached to the shaft with a removable outer circumferential-side support member for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the rigidity of the threshing cylinder is increased to prevent threshing failure, then the strength and stability are improved, but the weight of the cylinder increases
Solution Approach 1:
The single long threshing teeth support member is divided into multiple shorter support members (front-side divided threshing teeth support members and rear-side divided threshing teeth support members). Each shorter member has sufficient rigidity for its reduced length, while the overall structure maintains required strength through distributed support. This segmentation reduces the total weight compared to a single long member while preventing threshing failure.
2Length of stationary object
If the length of the threshing teeth support member is increased to cover the entire front-to-rear length of the cylinder, then the structural continuity is improved, but the rigidity decreases causing flexing and deformation
Solution Approach 1:
The support structure is segmented into multiple shorter threshing teeth support members distributed along the front-to-rear length of the cylinder. Each segment maintains adequate rigidity for its length, and the collective arrangement provides continuous support functionality without the flexing and deformation problems of a single long member.
Solution Approach 2:
Instead of relying on a single long member extending in one dimension, the support function is distributed across multiple members arranged in both the front-to-rear direction and the circumferential direction. This multi-dimensional distribution maintains structural continuity while preserving rigidity through shorter individual members.
3Device complexity
If the intermediate support member is designed as a single integrated component, then the structural simplicity is maintained, but the ease of assembly decreases due to difficult handling and mounting
Solution Approach 1:
The intermediate support member is divided into an inner circumferential-side support member and an outer circumferential-side support member. This segmentation creates smaller, more manageable components that are easier to handle and mount separately, while the two parts work together to provide the complete intermediate support function.
4Stability of the object's composition
If the threshing teeth support members are made as single pieces from front end to rear end, then the structural integrity is improved, but the ease of repair decreases when parts wear out
Solution Approach 1:
The threshing teeth support members are segmented into multiple shorter members (front-side and rear-side divided members) rather than single long pieces. This allows individual segments to be replaced when worn without replacing the entire support structure, significantly improving ease of repair while maintaining structural integrity through the distributed arrangement of segments.
Data Source
AI summary
Provided is a threshing cylinder with a threshing processing section provided on the rear side of a raking section. In the threshing processing section, a front support member, an intermediate support member, and a rear support member are supported by a threshing cylinder support shaft. A plurality of front-side divided threshing teeth support members are supported by the front support member and the intermediate support member in a state in which the front-side divided threshing teeth support members are arranged at the same arrangement pitch in the circumferential direction of the threshing processing section. A plurality of rear-side divided threshing teeth support members are supported by the intermediate support member and the rear support member in a state in which the rear-side divided threshing teeth support members are arranged at the same arrangement pitch in the circumferential direction of the threshing processing section.