| 摘要 |
The invention relates to a drive unit for a wind turbine, wherein a rotor of the wind turbine is mounted rotatably to a mainframe. The rotor comprises a hub and at least one rotor blade fastened thereto. The drive unit comprises a gear system for converting the rotational speed of the rotor according to a desired gear ratio. The gear system, a planetary gear system, comprises at least one ring gear, a planet carrier, at least two planet wheels, a sun gear, and an output shaft. The wheels of the gear system are preferably designed as gear wheels. Because the sun gear is connected to an output shaft, the rotational energy can be coupled into a generator. It is the aim of the invention to provide a drive unit of a wind turbine that avoids the disadvantages of the prior art. In particular favorable and simple mounting for a rotor of a wind turbine having a robust and cost-reduced drive unit is to be implemented. The aim is achieved by a drive unit having the characteristics of the main claim. One of the characteristics that the invention comprises is that the drive unit has a substantially horizontal rotor axis for rotatably mounting the rotor. Said rotor axis can be indirectly or directly rigidly connected to the mainframe. In such a way, for the first time the advantage is achieved that the forces and loads of the rotor are directly introduced into the mainframe, and the main power flow does not take place in the surroundings of the gear system and cannot lead to harmful deformations there. In addition, the mounting can be done on a central, journal-like rotor axis using smaller and less expensive bearings. |
