Telescopic Bar Arrangement for Wind Turbine Blade Access
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Solution Overview
Problem
Existing blade access arrangements for wind turbines struggle to reach the tip of the rotor blade, which is farthest from the tower, and are not easily transportable between wind power plants in a compact form.
Innovation Solution
A blade access arrangement featuring a bar arrangement with telescopic beams and an extension beam connected via a hinge, allowing the beams to extend for operation while folding for transport, and a wire-driven system for smooth telescopic movement, enabling access to the blade tip and compact transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the platform is designed to reach the blade tip (farthest point from tower), then the access capability is improved, but the platform size and weight increase making it difficult to transport
Solution Approach 1:
The bar arrangement is divided into multiple telescopic beam segments (inner beams and outer beams) that can extend and retract. This segmentation allows the platform to achieve long reach when needed while maintaining a compact form for transport, resolving the contradiction between reach distance and transportability.
Solution Approach 2:
The telescopic beams are designed to be dynamically extendable and retractable during operation. The beams can extend to reach the blade tip during maintenance operations, then retract to a compact configuration for transport, making the platform adaptable to different operational requirements.
2Length of moving object
If the telescopic beams are extended to reach the blade tip, then the access capability is improved, but the platform cannot be transported on a trailer
Solution Approach 1:
The inner beams are nested within the outer beams of the telescopic structure. When retracted, the beams fold into each other like nested dolls, creating a compact configuration that fits within transport constraints while maintaining the capability to extend to full length when needed for blade tip access.
3Length of moving object
If the inner beam length is increased to reach the blade tip, then the access capability is improved, but the platform becomes too large for compact transport
Solution Approach 1:
The beam structure is segmented into telescopic sections that can be extended to the required length for blade tip access, then retracted to a compact form for transport. This eliminates the need for a permanently long inner beam, resolving the contradiction between beam length and platform volume.
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
The invention relates to a blade access arrangement (1) for a rotor blade of a wind power plant having a tower, the arrangement (1) comprising a platform (2), tower guide means (3) for guiding the platform (2) against the tower, a bar arrangement (4, 5) capable of being displaced in relation to the platform (2) and connecting the platform (2) with the tower guiding means (3), said blade access arrangement (1) comprising a hoisting arrangement for hoisting the blade access arrangement (1) up and down, where the bar arrangement (4, 5) comprises an extension beam (12, 13) connected to the bar arrangement (4, 5) via a hinge (14).