Lowering the rotor is the most costly and restrictive operation involved in replacing a wind turbine's gearbox. The rotor is both the heaviest component and the one most susceptible to the wind. However, lowering it can be avoided altogether if the main shaft is held in place with a fixture.
To reduce maintenance costs even further, Liftra has developed a new line of Main Shaft Fixtures that comprise a modular system with interchangeable parts. The new design allows the equipment to be used on many different turbines simply by exchanging some of the modules that are custom-built to fit in each turbine.
The Main Shaft Fixture secures the main shaft to the nacelle bedframe in turbines where the rotor is counterbalanced by the gearbox assembly. As a result, a lower overall crane capacity is required for the gearbox exchange.
Learn more about this system here: https://lnkd.in/gyPgdu6