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Movable helihoist platform

IP.com Disclosure Number: IPCOM000238284D
Publication Date: 2014-Aug-14
Document File: 3 page(s) / 437K

Publishing Venue

The IP.com Prior Art Database

Abstract

A wind turbine particularly for offshore use is provided with a platform on its nacelle for access of personnel and equipment by helicopter, where the platform is movable between an extended position is which it can be accessed by the helicopter whilst the turbine is shut down, and a retracted position in which the platform lies more closely over the nacelle and is less susceptible to vibration, and which is associated with operation of the turbine.

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Movable helihoist platform

Abstract

A wind turbine particularly for offshore use is provided with a platform on its nacelle for access of personnel and equipment by helicopter, where the platform is movable between an extended position is which it can be accessed by the helicopter whilst the turbine is shut down, and a retracted position in which the platform lies more closely over the nacelle and is less susceptible to vibration, and which is associated with operation of the turbine.

Disclosure

In wind turbines for offshore use it is common to provide the turbine nacelle with a platform by which it is possible to hoist personnel and other payloads (turbine components, tools etc.) from a helicopter. Such access may be necessary as part of the turbine installation, or service or repair. Such platform structures are typically separate structural entities fixed directly or indirectly to the load- bearing nacelle frame.

Such platforms are susceptible to vibration from operation of the turbine. In operation wind turbines are exposed to a variety of sources of vibration from moving parts, most notably the rotor and gearbox, and this can be communicated to the platform, creating undesirable loading on the platform itself, its supports and additional loading on the nacelle frame.

In order to reduce this loading it is proposed to provide the platform with the facility to move or adjust the platform position and /orientation between an extended position where it extends horizontally from a rear of the nacelle and is availabl...