Wind Turbine Blade Access Platform Parallelogram Orientation
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Solution Overview
Problem
Existing blade access arrangements for wind power plants fail to maintain a consistent orientation of sub-platforms relative to the rotor blade during movement, making it difficult for operators to inspect, maintain, or repair blades efficiently.
Innovation Solution
A blade access arrangement with moveable sub-platforms connected by parallel connectors forming a parallelogram, where the decking has a variable width to maintain orientation and accommodate operators, and actuators adjust the platform shape to adapt to the rotor blade's configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sub-platforms are moved relative to each other to adapt to blade configuration, then platform adaptability is improved, but orientation stability deteriorates
Solution Approach 1:
The platform employs a dynamic parallelogram mechanism with moveable connectors that allows the sub-platforms to change their relative positions and angles adaptively. The connectors can pivot and extend/retract, enabling the platform to transform its shape while maintaining the parallelogram geometric constraint that preserves orientation relationships between sub-platforms throughout the motion range.
2Ease of operation
If decking width is made variable to accommodate operator movement, then ease of operation is improved, but structural complexity increases
Solution Approach 1:
The decking structure incorporates moveable elements including telescopic beams and adjustable planks that can extend or retract to vary the effective width of the platform. This dynamic adjustment capability allows the decking to adapt to different operational requirements and blade configurations without requiring multiple discrete decking modules, thereby managing complexity while improving operator accessibility.
3Stability of the object's composition
If parallel connectors with same length are used to form parallelogram, then orientation maintenance is improved, but device complexity increases
Solution Approach 1:
The platform divides the space between sub-platforms into multiple segments using parallel connectors of equal length. These connectors are arranged in a systematic parallelogram pattern, where each connector is a discrete, standardized component. This segmentation approach maintains orientation through the geometric constraints of the parallelogram while using simple, repeatable connector units rather than complex continuous structures.
Data Source
Figure 1~2
Figure 3
AI summary
A blade access arrangement for a rotor blade of a wind power plant is described, the arrangement comprising a platform (1) having at least two sub-platforms (3, 4, 5, 6) which are moveably connected to each other by means of a connecting arrangement. In such a platform the sub-platforms should keep a predetermined orientation to the rotor blade. To this end the connection arrangement comprises at least two connectors (9, 10), the connectors (9, 10) having the same length and at least at their ends the same distance to each other.