Haymaking Rotor Arm Integrated Retention Cavity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing agricultural machinery with radial expansion rotary support arms faces challenges in securely retaining broken work tools, leading to potential projection and loss, which complicates assembly and increases safety risks due to deformation under operational stress.
Innovation Solution
A retention piece is integrated into the support arm, incorporating a portion of the fixing means, such as a bolt or nut, to simplify assembly and reduce the number of parts, allowing for secure attachment of the working tool without requiring complex bolt mounting or hollow support arms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate retention piece is used to secure broken tool parts, then safety is improved, but assembly complexity increases and assembly time increases
Solution Approach 1:
The patent combines the retention piece with the support arm by integrating a retention cavity directly into the support arm structure. This merging eliminates the need for separate retention components and simplifies assembly, while still providing secure retention of broken tool parts through the integrated cavity that captures and holds detached strands or tool segments.
Solution Approach 2:
The support arm is designed with multi-functionality by incorporating both the structural support function and the retention function into a single component. The retention cavity within the support arm serves dual purposes: it provides structural integrity as part of the support arm while simultaneously acting as a retention mechanism for broken tool parts, thereby reducing overall assembly complexity.
2Reliability
If multiple separate parts are used for tool attachment, then retention security is improved, but assembly time increases
Solution Approach 1:
The patent merges the retention function into the support arm structure itself through an integrated retention cavity. This eliminates the need for multiple separate retention parts and reduces assembly steps to a single operation where the tool is inserted and secured, significantly reducing assembly time while maintaining secure retention of tool parts.
Solution Approach 2:
The retention cavity is designed as a distinct functional segment within the support arm structure, allowing for modular manufacturing and assembly. This segmentation enables the retention feature to be integrated into the support arm production process without complicating the overall assembly, as the cavity is formed as part of the support arm's internal structure.
3Reliability
If a hollow support arm is used for retention, then retention function is improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the retention cavity with the support arm manufacturing process by forming the cavity as an internal feature of the support arm structure. This integration allows the retention function to be achieved without requiring separate hollow components or complex assembly operations, as the cavity is created during the support arm fabrication process itself.
Solution Approach 2:
The support arm is designed with local quality by incorporating the retention cavity only at the specific location where tool retention is needed, rather than making the entire support arm hollow. This localized approach maintains the structural integrity and manufacturing simplicity of the support arm while providing the retention function only where required, reducing overall manufacturing complexity.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present invention relates to a haymaking machine with rotors equipped with safety tools, comprising at least one rotor having at least one radially extending rotating support arm (3), with an inner end connected to the rotor hub and an opposite outer end carrying at least one working tool having strands (6) connected by an intermediate portion having, on one side, turns and, on the other side, at least one angled section for attachment to the support arm (3), this arm (3) extending internally through at least some of the turns, and a retaining piece for turns detached from the support arm (3) being attached to the latter. The machine is characterized in that said retaining piece incorporates at least a part of the means for attaching the relevant working tool to the support arm (3).