Guiding Tool Structure for Damage-Free Wind Blade Trimming
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Solution Overview
Problem
Wind turbine blades suffer from erosion due to impact of particles during operation, leading to structural damage and reduced performance, and existing methods for repairing and protecting the leading edge can cause unintended damage during surface trimming.
Innovation Solution
A guiding tool for a surface trimming device that includes a main body with a recess and fixation means, allowing a trimming device to be mounted in a way that prevents unintended contact with the blade surface, using adjustable fixation and guiding rollers to ensure precise and damage-free edge trimming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a trimming or grinding operation is performed on the edges of the protective shell, then a smooth surface of the wind turbine blade is obtained, but there is a risk of accidentally damaging the underlying surface of the wind turbine blade
Solution Approach 1:
The guiding tool acts as an intermediary device between the trimming device and the wind turbine blade. It includes a support surface that contacts the blade surface and a guiding element that directs the trimming device, ensuring controlled trimming operation without direct uncontrolled contact between the trimming device and the blade surface.
Solution Approach 2:
The guiding tool is positioned and adjusted before the trimming operation begins. The support surface is placed on the blade surface and the guiding element is configured to establish the correct trimming depth and path in advance, preventing excessive trimming before the actual cutting occurs.
2Manufacturing precision
If additional edge filling material is used to maintain aerodynamic properties, then a smooth surface is obtained, but the thin layer of edge filling material decomposes very fast during operation
Solution Approach 1:
Instead of relying on thin edge filling material that decomposes quickly, the invention converts the trimming operation into a beneficial process by using the guiding tool to achieve precise, controlled trimming that creates a durable smooth surface without the need for excessive filling material.
3Ease of operation
If the trimming device is allowed free movement during operation, then ease of operation is improved, but manufacturing precision and control over trimming depth are reduced
Solution Approach 1:
The guiding tool combines multiple functions: it provides support through the support surface, guidance through the guiding element, and depth control through the configured geometry. This multi-functional design maintains ease of operation while ensuring precision.
Solution Approach 2:
The guiding tool provides localized control at the trimming point through the guiding element and support surface contact points, while allowing the operator to move the trimming device freely in areas where control is not needed. The guidance is applied only where precision is required.
Data Source
AI summary
Provided is a guiding tool for a surface trimming device, including a main body with a front side base portion and a backside base portion, which are connected by at least one connection portion of the main body, wherein the main body exhibits a recess on a bottom side between the front side base portion and the backside base portion, wherein the main body includes a fixation device on a top side of the main body opposing the recess, wherein a surface trimming device is mountable to the fixation device in such manner that a movable device or trimmer of the surface trimming device is located in the recess between the front side base portion and the back side base portion.