Abstract: A planetary carrier includes a first hub having an adjoining first sealing wall and a second hub having an adjoining second sealing wall. The first and second sealing walls are arranged opposite each other. The planetary carrier has a web for connecting the first sealing wall to the second sealing wall. A greatest material accumulation of the planetary carrier, at which a greatest Heuvers element of the planetary carrier is located, is radially outside in a region of a transition from the web to the first sealing wall.

Abstract: A planetary gearbox includes 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. A first one of the gear stages and a second one of the gear stages are configured as planetary stages, respectively. Each of the planetary stages includes a ring gear embodied as a stationary gearing component. A third one of the gear stages is embodied as a planetary stage having a stationary gearing component. The first one of the gearing stages includes at least five planetary gears.

Abstract: A wind turbine transmission includes a high-speed spur gear stage which includes a HSS spur gear and an HSS pinion meshing therewith on a HSS pinion shaft. The HSS spur gear is directly mounted in a transmission housing of the wind turbine transmission. A sun gear shaft of a transmission stage, which is mounted upstream of the high-speed spur gear stage, is directly coupled to the HSS spur gear.

Abstract: A planetary gear includes a housing, a first gear stage having a first planet gear carrier, a bearing disposed on a wall of the housing, and a first shaft connected to the first planet gear carrier for torque transmission and supported in the bearing. The planetary gear further includes a second gear stage having a second planet gear carrier connected to a sun gear shaft of the first gear stage for torque transmission. The second planet gear carrier is supported in at least one of two ways, a first way in which the second planet gear carrier is supported in an axially inner bearing arranged on the first planet gear carrier, a second way in which the second planet gear carrier is supported in an axially outer bearing arranged in the wall of the housing.

Abstract: A planetary carrier includes an input-side hub, an input-side outer leg, an output-side leg including an output-side axle seat for receiving an output-side end of a planetary axle, a web connecting the input-side outer leg with the output-side leg and an input-side inner leg arranged in parallel to the input-side outer leg. The input-side inner leg includes an input-side axle seat for receiving an input-side end of the planetary axle.

Abstract: A planetary axle for a planetary gearbox can be constructed analogously to a transverse link axle and/or a thrust/flexural link axle and/or a longitudinal link axle for use in the automotive industry. The planetary axle includes a clamping area for clamping of the planetary axle in a side of a planetary carrier, a bearing seat area for receiving a planetary bearing, and a link area disposed between the clamping area and the bearing seat area.

Abstract: A wind turbine transmission includes a high-speed spur gear stage which includes a HSS spur gear and an HSS pinion meshing therewith on a HSS pinion shaft. The HSS spur gear is directly mounted in a transmission housing of the wind turbine transmission. A sun gear shaft of a transmission stage, which is mounted upstream of the high-speed spur gear stage, is directly coupled to the HSS spur gear.

Abstract: A planetary carrier includes a first hub having an adjoining first sealing wall and a second hub having an adjoining second sealing wall. The first and second sealing walls are arranged opposite each other. The planetary carrier has a web for connecting the first sealing wall to the second sealing wall. A greatest material accumulation of the planetary carrier, at which a greatest Heuvers element of the planetary carrier is located, is radially outside in a region of a transition from the web to the first sealing wall.

Abstract: A planetary gear includes a housing, a first gear stage having a first planet gear carrier, a bearing disposed on a wall of the housing, and a first shaft connected to the first planet gear carrier for torque transmission and supported in the bearing. The planetary gear further includes a second gear stage having a second planet gear carrier connected to a sun gear shaft of the first gear stage for torque transmission. The second planet gear carrier is supported in at least one of two ways, a first way in which the second planet gear carrier is supported in an axially inner bearing arranged on the first planet gear carrier, a second way in which the second planet gear carrier is supported in an axially outer bearing arranged in the wall of the housing.

Abstract: The invention relates to a process for producing a large transmission gearwheel (1; 31; 36) consisting of a plurality of individual components, said process comprising the successive steps of: providing the individual components, which include at least one hub (2; 32; 37), a disc wheel (3, 4; 18, 19; 22; 24; 27; 33, 34; 38, 39) and a toothed ring (5; 20; 21; 23; 26; 35; 40) produced from case-hardened steel; at least partially mechanically soft machining the individual components; joining the individual components using a beam welding process; case hardening the individual components which have been joined to one another, and hard machining at least the toothed ring (5; 20; 21; 23; 26; 35; 40). The invention furthermore relates to a large transmission gearwheel produced by such a process.

Abstract: A planetary gearbox includes a gearbox housing, a sunwheel rotatable in the housing about a central gearbox axis and having outer teeth, a ringwheel arranged concentrically to the central gearbox axis within the housing and having inner teeth, a planet gear carrier rotatable in the gearbox housing about the central gearbox axis, and a plurality of planet gears mounted on the planet gear carrier for rotation about corresponding planetary gear pins and having outer teeth meshing with the inner teeth on the ringwheel and the outer teeth of the sunwheel. At least one segmented radial sliding bearing supports the planet gear carrier on the gearbox housing and includes a plurality of circumferentially spaced-apart radial sliding bearing segments positioned radially outside the planetary gear pins so that the planet gear carrier is supported by the radial sliding bearing at a position located radially outside the planetary gear pins.

Abstract: A planetary carrier includes an input-side hub, an input-side outer leg, an output-side leg including an output-side axle seat for receiving an output-side end of a planetary axle, a web connecting the input-side outer leg with the output-side leg and an input-side inner leg arranged in parallel to the input-side outer leg. The input-side inner leg includes an input-side axle seat for receiving an input-side end of the planetary axle.

Abstract: A planetary axle for a planetary gearbox can be constructed analogously to a transverse link axle and/or a thrust/flexural link axle and/or a longitudinal link axle for use in the automotive industry. The planetary axle includes a clamping area for clamping of the planetary axle in a side of a planetary carrier, a bearing seat area for receiving a planetary bearing, and a link area disposed between the clamping area and the bearing seat area.

Abstract: A gearbox includes a planetary stage having at least two planetary gear trains which are connected in parallel and flexibly coupled to one another. Each planetary gear train has individual components which are each defined by a torsional stiffness, with a power flow through the planetary gear trains being controlled by coordinating the torsional stiffness of the individual components of the planetary gear trains.

Abstract: A planetary gearbox includes a gearbox housing, a sunwheel rotatable in the housing about a central gearbox axis and having outer teeth, a ringwheel arranged concentrically to the central gearbox axis within the housing and having inner teeth, a planet gear carrier rotatable in the gearbox housing about the central gearbox axis, and a plurality of planet gears mounted on the planet gear carrier for rotation about corresponding planetary gear pins and having outer teeth meshing with the inner teeth on the ringwheel and the outer teeth of the sunwheel. At least one segmented radial sliding bearing supports the planet gear carrier on the gearbox housing and includes a plurality of circumferentially spaced-apart radial sliding bearing segments positioned radially outside the planetary gear pins so that the planet gear carrier is supported by the radial sliding bearing at a position located radially outside the planetary gear pins.

Abstract: In a method for producing a spur-cut gear wheel, a plurality of individual components are provided with at least one hub, a disk wheel and a ring gear. The individual components are subjected to at least partial mechanical soft machining and joined by using a welding method. At least the ring gear is hardened and hard machined. Before carrying out a grinding burn test by using the nital etching process, gaps present on the rear side in the area of the welds produced during welding are sealed by using a sealing material that is resistant to nitric acid.

Abstract: A method for identifying possible damage in a toothed transmission stage having at least one pair of engagement toothed wheels includes measuring with a vibration transducer an oscillation signal corresponding to oscillations produced by a rolling and impact motion when teeth of a pair of the toothed wheels mesh under load during operation of the transmission stage, comparing the oscillation signal with a calibration oscillation signal, determining a torque acting on the transmission stage from a difference between the oscillation signal and the calibration oscillation signal, and evaluating the measured oscillation signal commensurate with the determined torque to identify the possible damage to the transmission stage.

Abstract: A drive system has a transmission unit with planetary gear stage and a first shaft associated with a planetary carrier and having a coupling flange connectable to a machine or rotor shaft. The transmission unit and a motor/generator unit includes a rotor connected with a rotation-lock to a hollow rotor shaft which is connected to a second shaft of the transmission unit and enclosed by a gearbox housing. A coupling is arranged radially between the second shaft and the hollow rotor shaft. A gearbox housing support with a hollow cylindrical extension is arranged between the transmission unit and the motor/generator unit. The cylindrical extension concentrically encloses an end section of the second shaft and forms a bearing seat for a bearing arrangement disposed radially between the second shaft and the cylindrical extension. The hollow cylindrical extension is concentrically enclosed by the rotor and the hollow rotor shaft.

Abstract: The invention relates to a process for producing a large transmission gearwheel (1; 31; 36) consisting of a plurality of individual components, said process comprising the successive steps of: providing the individual components, which include at least one hub (2; 32; 37), a disc wheel (3, 4; 18, 19; 22; 24; 27; 33, 34; 38, 39) and a toothed ring (5; 20; 21; 23; 26; 35; 40) produced from case-hardened steel; at least partially mechanically soft machining the individual components; joining the individual components using a beam welding process; case hardening the individual components which have been joined to one another, and hard machining at least the toothed ring (5; 20; 21; 23; 26; 35; 40). The invention furthermore relates to a large transmission gearwheel produced by such a process.

Abstract: A drive system having an integrated transmission and motor/generator unit for a wind turbine includes a transmission output shaft designed as a hollow shaft, which receives a sun shaft of an output-side planetary gear stage and is connected thereto. The transmission output shaft comprises a transmission-side end section of an insert shaft which is concentrically arranged within a rotor hollow shaft. The transmission output shaft additionally has a bearing for receiving radial and axial forces. The motor/generator unit has two dedicated bearings. One bearing thereof is a transmission-side bearing. In addition, a rear-side generator bearing is provided.