Lifting and Swivelling Device for Rotor Web Handling
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Solution Overview
Problem
Existing methods for lifting and pivoting large rotor components, such as rotor webs in wind turbine manufacturing, often result in damage due to one-sided lifting and lack of precise control, especially when dealing with sensitive C- or T-shaped glue tabs and the large size of wind turbine components.
Innovation Solution
A lifting and swiveling device with a pivoting arm, base body, displacement device, and lever arm that allows for simultaneous lifting and pivoting movements, utilizing vacuum suction pads and safety claws for secure grip and additional bearing points for versatile orientation, enabling safe and reliable handling of rotor bars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If one-sided lifting with mechanical gripper and lifting straps is used, then the rotor segments can be lifted, but the rotor segments are partially pulled over the ground causing damage to components
Solution Approach 1:
The patent combines lifting and pivoting functions into a single integrated device. The lifting arm is pivotally connected to the base body, and the displacement device enables both vertical lifting movement and rotational pivoting movement simultaneously, eliminating the need for separate lifting and positioning operations that cause damage.
Solution Approach 2:
The lifting arm can be displaced both vertically and rotationally through the displacement device. This dynamic capability allows the load to be lifted and positioned in a controlled manner, preventing the load from being dragged on the ground while maintaining operational simplicity.
2Ease of operation
If traditional lifting devices are used for large rotor components, then lifting can be achieved, but precise positioning and control during lifting and pivoting cannot be ensured
Solution Approach 1:
The displacement device provides independent vertical and rotational displacement capabilities. The lifting arm can be positioned at different vertical heights and rotated to different angular positions, enabling precise control over the load's position and orientation throughout the lifting and positioning process.
3Ease of manufacture
If rotor webs are manufactured lying and set up after demoulding, then manufacturing is feasible, but the enormous size of wind turbine segments requires complex handling equipment
Solution Approach 1:
The device merges lifting, pivoting, and positioning functions into a single integrated system. The base body with pivotal lifting arm and displacement device eliminates the need for multiple separate handling equipment, simplifying the overall handling system while maintaining manufacturing feasibility for large rotor segments.
Data Source
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AI summary
The invention relates to a lifting and pivoting device (10) for lifting and pivoting a load, particularly a rotor web (98), said device having a pivot arm (22) for fastening the load, a main body (12), a displacement apparatus (14), which can be displaced axially and perpendicularly in relation to the main body (12) and is connected pivotably to the pivot arm (22), and at least one lever arm (24), which is connected to the main body (12) and the pivot arm (22) in such a manner that the pivot arm (22) is pivoted when the displacement apparatus (14) is displaced in relation to the main body (12).