Planetary gearbox, drive train, wind turbine and industrial application

A drive train, comprising:

• a generator;
• a gearbox connected in a torque-transmitting manner to the generator, said gearbox being configured as a planetary gearbox which comprises an input shaft configured to introduce a driving torque of at least 1500 kNm, and three consecutively connected gearing stages operably connected to the input shaft for supply of the driving torque unbranched through each of the gearing stages, with a first one of the gear stages and a second one of the gear stages being configured as planetary stages, respectively, each of the planetary stages including a ring gear embodied as a stationary gearing component, and with a third one of the gear stages being embodied as a planetary stage having a stationary gearing component, said first one of the gearing stages including at least five planetary gears;
• and
• a rotor shaft connected in a torque-transmitting manner to the input shaft of the gearbox.

A wind turbine, comprising:

• a nacelle;
• a rotor attached to the nacelle;
• and
• a drive train connected in a torque-transmitting manner to the rotor and arranged in the nacelle, said drive train comprising a generator, a gearbox connected in a torque-transmitting manner to the generator, said gearbox being configured as a planetary gearbox which comprises an input shaft configured to introduce a driving torque of at least 1500 kNm, and three consecutively connected gearing stages operably connected to the input shaft for supply of the driving torque unbranched through each of the gearing stages, with a first one of the gear stages and a second one of the gear stages being configured as planetary stages, respectively, each of the planetary stages including a ring gear embodied as a stationary gearing component, and with a third one of the gear stages being embodied as a planetary stage having a stationary gearing component, said first one of the gearing stages including at least five planetary gears, and a rotor shaft connected in a torque-transmitting manner to the input shaft of the gearbox.