Wind Turbine Blade with Divided Shaft Integration
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Solution Overview
Problem
Existing wind power generator blade units are difficult to manufacture integrally due to complex shapes and assembly requirements, necessitating numerous bolts, tools, and materials, which increases production time, weight, and reduces efficiency and aesthetics.
Innovation Solution
A blade unit with a divided shaft that allows blades to be attached integrally along the length of the shaft, eliminating the need for separate frames and bolts by using a circumferential sub-surface and joining sub-surface for assembly, enabling easier and more efficient manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If blades are attached to the shaft through separate frames and bolts, then the blade unit can be assembled, but the number of parts increases and assembly time is extended
Solution Approach 1:
The patent merges the frame and blade into a single integrated component where the blade is directly formed on the circumferential surface of the shaft. This eliminates the need for separate frames and multiple bolts, reducing the number of parts while maintaining structural integrity. The blade and shaft become a unified structure that is manufactured as one piece rather than assembled from multiple components.
2Strength
If multiple bolts and nuts are used to attach the blade, then the attachment is secure, but the weight increases and wind flow is hindered
Solution Approach 1:
By integrating the blade directly onto the shaft circumferential surface, the patent eliminates the need for separate fastening components like bolts and nuts. This merging of components reduces the overall weight of the blade unit while maintaining secure attachment through the integrated structure. The unified design removes unnecessary metal fasteners that would add weight and create aerodynamic interference.
3Ease of manufacture
If the blade is made separately from the shaft and attached through bolts, then manufacturing is easier, but assembly time increases significantly
Solution Approach 1:
The patent combines the blade and shaft into a single integrated component that is manufactured as one piece. This eliminates the time-consuming assembly process of attaching separate blades to the shaft using multiple bolts and nuts. The integrated manufacturing approach reduces assembly time to minimal operations while maintaining manufacturing feasibility through modern molding or casting techniques.
4Stability of the object's composition
If a hexagonal cross-section shaft is used to attach frames, then the frame can be surface-contacted to the shaft, but the machining time increases compared to circular cross-section
Solution Approach 1:
By integrating the blade directly onto the shaft circumferential surface, the patent eliminates the need for frame attachment structures. This removes the requirement for complex hexagonal cross-section machining, allowing the use of simpler circular cross-section shafts that are faster to manufacture. The integrated blade provides the necessary stability without requiring specialized shaft geometries or frame assemblies.
Data Source
AI summary
A method for making blade unit with divided shaft facilitating drastically the productivity and assembling compared to a method fixing blade to a shaft using many connecting parts. The method for making blade unit includes steps for making a blade with divided shaft comprising a blade and a divided shaft that is attached integrally to a root portion of the blade and divided into a plurality of portions in a direction of length of the shaft, and combining a plurality of made blades with divided shaft together with one another through the divided shaft.