Zf Friedrichshafen Ag

Schaeffler Technologies Ag & Co .Kg

Airbus Helicopters Deutschland Gmbh

Bernd-Robert Hohn

Thomas Rosemeier

Christoph Pelchen

Franz Kurth

Thorsten Biermann

Andreas Doleschel

Christian Wirth

Martin Weidenthaler

A planetary gear () for variable transmission, particularly a planetary gear for variable transmission towards a tail rotor of a helicopter. At least one gear set (s, s, s, s) of a sun gear (w, w) comprises a ring gear (w, w), planetary wheels () and a planet carrier (w, w, w). At least one clutch (k, K, K) and at least one freewheel (Fl, FL, FL) are provided for at least two different speeds of the planet carrier (w, w, w) as output.

Planetary gear for variable transmission

A spur gear differential () having a first sun () and a second sun (), wherein the first sun () is associated with a first set of planetary gears () and the second sun () is associated with a second set of planetary gears (), and the first set of planetary gears () engages with the second set of planetary gears (). The number of teeth () of the first sun () are equal to the number of teeth () of the second sun (), and the teeth () of the first sun () are disposed by a profile shift on a crown circle () having a crown circle diameter (D) that differs from the crown circle diameter (D) of a crown circle on which the teeth () of the second sun () are disposed. The first set of planetary gears () engages only with the first sun () and the second set of planetary gears () engages only with the second sun ().

Spur gear differential

A transmission device, for a motor vehicle, with at least two drive output shafts and two multi-shaft planetary gearsets in active connection with one another. A shaft of a planetary gearset is actively connected with an output shaft and is shifted, between first and second power paths, such that in the first power path, torque of an electric machine is transmitted in equal parts and with the same sign to the output shafts, and in the second power path, torque is transmitted in equal parts but with different signs. One of the two planetary gearsets is made as a four-shaft, reduced coupling transmission with two sun gears and a common planetary gear carrier with radially inner and outer planetary gears that mesh with one another, and which are engaged, on the one hand, with the sun gears and, on the other hand, with a rotationally fixed ring gear.

Transmission device

A transmission device with at least two output shafts and at least two multi-shaft planetary gearsets being actively connected. A shaft of each gearset can be actively connected with an output shaft. A shifting mechanism is provided, between the two output shafts, for shifting between a first power path and a second power path. In the area of a further shaft of one of the planetary gearsets, torque from an electric machine flows along the first or the second power path. When the first power path is engaged, the torque from the electric machine flows in equal parts and with the same sign to the two output shafts, and when the second power path is engaged, the torque flows to the two output shafts in equal parts but with opposite signs. A motor output shaft of the electric machine is arranged perpendicularly to one of the two output shafts.

Transmission device comprising at least two output shafts and at least two multi-shaft planetary gear sets

A transmission device with at least two output shafts and at least two multi-shaft planetary gearsets that are actively connected with one another. A shaft of a planetary gearset can be actively connected with an output shaft. In addition, a shifting mechanism, located between the two output shafts, shifts between a first power path or a second power path. In one of the planetary gearsets, torque from an electric machine can be transmitted along either the first or the second power path. In the first power path, torque from the electric machine is transmitted to the two output shafts in equal parts and with the same sign. In the second power path, torque is transmitted to the two output shafts in equal parts but with opposite signs. The planetary gearset, in the area of which the torque from the electric machine can be transmitted, is a simple negative planetary gearset.

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Munich, Germany

Bernd-Robert Hohn