Cable-Climbing Robot for Wind Blade Inspection and Repair
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Solution Overview
Problem
Existing wind turbine blade inspection, repair, and upgrade methods require significant human intervention, are time-consuming, and inefficient, especially in adverse environmental conditions.
Innovation Solution
A system and method utilizing a climbing robot and slave robot system, deployed via cables from a base location, to autonomously inspect, repair, and upgrade wind turbine blades, minimizing human intervention and operating in various conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual inspection, repair and upgrade methods are used, then human technicians can perform tasks with flexibility, but the process is time-consuming and expensive
Solution Approach 1:
The system enables self-service through autonomous robots that perform inspection, repair and upgrade tasks without human intervention. The climbing robot autonomously navigates the blade, identifies defects, and executes repair operations, eliminating the need for manual rope access operations while significantly increasing productivity
Solution Approach 2:
The patent replaces manual mechanical operations with automated robotic systems. The climbing robot uses cable-driven positioning and robotic manipulators to perform tasks that were previously done manually, substituting human labor with automated mechanical systems that are faster and more consistent
2Ease of operation
If manual rope access methods are used, then technicians can access blades for maintenance, but the method is expensive and requires significant human intervention
Solution Approach 1:
The climbing robot performs all inspection and repair tasks autonomously without requiring human technicians to physically access the blade. The system includes autonomous navigation, automated defect detection, and self-executed repair operations, completely eliminating the need for human intervention in hazardous environments
Solution Approach 2:
The patent introduces a cable-driven positioning system as an intermediary mechanism that enables the robot to access and position itself on the blade without human intervention. The cable system acts as a mediator between the ground control and the climbing robot, allowing autonomous operation while providing precise positioning capability
3Productivity
If inspection is performed at longer time intervals, then operational costs are reduced, but wind turbines operate inefficiently for significant periods
Solution Approach 1:
The climbing robot enables continuous or frequent inspection operations without the time and cost constraints of manual methods. The automated system can perform rapid inspections at optimized intervals, maintaining continuous operational efficiency by quickly assessing blade conditions and scheduling repairs only when necessary
Solution Approach 2:
The replacement of manual inspection with automated robotic inspection dramatically reduces the time required for each inspection event. The robot can quickly navigate and scan multiple blades, enabling more frequent inspections at lower cost, thus maintaining higher operational efficiency between inspections
4Adaptability or versatility
If environmental conditions are adverse, then human access to turbines is precluded, but automated systems can operate in diverse conditions
Solution Approach 1:
The autonomous climbing robot performs all tasks without human presence, making it completely immune to adverse environmental conditions. The system includes environmental sensing and adaptive control that allows it to operate in wind, rain, cold, and other conditions that would prevent human access
Solution Approach 2:
The cable-driven positioning system and robotic manipulators serve as intermediaries that enable operation in harsh environments where humans cannot work. The system can operate remotely controlled or autonomously, acting as a mediator between the control system and the blade, allowing maintenance in conditions that preclude direct human access
Data Source
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AI summary
A system and method for inspecting, repairing and upgrading wind turbine rotor blades of a wind turbine. The system including deploying one or more cables via an unmanned aerial vehicle (UAV), a balloon, a ballistic mechanism or a catapult to position the one or more cables in draping engagement with a portion of the wind turbine. A climbing robot is positioned to ascend the one or more cables and perform a task related to inspecting for indications, repair of indications or upgrading the rotor blade. A slave robot system, disposed at the base location and anchored to the one or more cables, provides modulation of the cables for positioning of the climbing robot relative to the wind turbine as it ascends and descends the one or more cables. After completion of the task, the climbing robot descends the one or more cables and the cables are removed from the wind turbine.