Stay ring and reaction force monitoring support system of stay ring

The stay ring system with frame portions, pressing mechanisms, and hydraulic cylinders addresses the issue of eccentric forces in wind turbine construction by monitoring and managing reaction forces, improving workability and force stability.

JP2025166527APending Publication Date: 2025-11-06OHBAYASHI GUMI LTD
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Patent Information

Application Number
JP2024070616
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-04-24
Publication Date
2025-11-06

AI Technical Summary

Technical Problem

The existing lift-up devices in wind turbine construction are unsupported by all four columns of the guide tower, leading to eccentric forces acting on the tower due to the stay ring, necessitating effective management of reaction forces.

Method used

A stay ring with a frame portion surrounding the tower, pressing mechanisms equipped with detection units to monitor and adjust reaction forces, and a hydraulic cylinder for force application, divided into four units for improved workability and equipped with a restricting mechanism to prevent sudden force drops.

Benefits of technology

The system allows for constant monitoring and management of reaction forces, enhancing workability and preventing sudden force changes, enabling precise force application and visualization of detected forces.

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Abstract

To adequately control reaction force from a tower acting on a stay ring.SOLUTION: A stay ring 70 is placed between a tower 11 and a guide tower 21 provided at the periphery of the tower 11 when providing the tower 11, and makes the tower 11 support the guide tower 21 through the stay ring by transferring horizontal force between the tower 11 and the guide tower 21. The stay ring 70 comprises a frame part 71 enclosing the tower 11 and supporting the guide tower 21, and multiple pressing force mechanisms 73 that are placed on a circumferential direction of the frame part 71 at intervals to each other and fixed to the frame part 71, and presses an outer peripheral surface of the tower 11. Each of the pressing force mechanisms 73 has a detection part 79 for detecting reaction force that the pressing force mechanism 73 is received from the outer peripheral surface of the tower 11.SELECTED DRAWING: Figure 3
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