Abstract: A device (1) to drive at least an output shaft (3) of a rail vehicle with a drive engine (4). The at least one output shaft (3) can be brought into an operational connection with a wheel (2), and a transmission assembly (6) is positioned on the drive side of the at least one output shaft (3). At least two gear ratios can be presented in the area of the transmission assembly (6). In addition, a method is described for operating such a device (1).

Abstract: A multi-speed transmission (9) for a rail vehicle. The multi-speed transmission (9) has at least one transmission input (AN), at least one transmission output (AB), at least one planetary gearset (PR1, PR2), at least one shifting element (SE1, SE2) and a housing (G). The planetary gearset (PR1, PR2) has a sun gear (S1, S2), at least one planetary carrier (PT1, PT2) with planetary gearwheels, and a ring gear (H1, H2), and rotational movement from a drive element (8) is introduced into the multi-speed transmission (9). By actuating the at least one shifting element (SE1, SE2), at least two different transmission ratios can be obtained between the transmission input (AN) and the transmission output (AB).

Abstract: A device (1) to drive at least an output shaft (3) of a rail vehicle with a drive engine (4). The at least one output shaft (3) can be brought into an operational connection with a wheel (2), and a transmission assembly (6) is positioned on the drive side of the at least one output shaft (3). At least two gear ratios can be presented in the area of the transmission assembly (6). In addition, a method is described for operating such a device (1).

Abstract: A gear train with at least first and second spur gears (1, 2) which have a tooth width (b), mesh with one another and each have helical teeth (3, 4). The first spur gear (1) has a tooth profile with a crown circle diameter and the second spur gear (2) has a tooth profile with a root circle diameter. The first spur gear (1) has at least one projection (5) on the tooth profile that extends partially along the tooth width and beyond the crown circle diameter, and the at least one projection (5) has at least one contact face (5a) in the axial direction.

Abstract: A gear train with at least first and second spur gears (1, 2) which have a tooth width (b), mesh with one another and each have helical teeth (3, 4). The first spur gear (1) has a tooth profile with a crown circle diameter and the second spur gear (2) has a tooth profile with a root circle diameter. The first spur gear (1) has at least one projection (5) on the tooth profile that extends partially along the tooth width and beyond the crown circle diameter, and the at least one projection (5) has at least one contact face (5a) in the axial direction.

Abstract: A transmission (8) for a motor vehicle (2) with a housing (26) and a shifting apparatus arranged therein and with an electromechanical transmission actuator (24) with a first electric motor (32) for exercising a selection motion of the shifting device with a second electric motor (34) for exercising a shifting motion of the shifting apparatus and with a control unit (22) for receiving sensor signals, for processing the sensor signals and for emitting control signals to the electric motors (32, 34) the axis of rotation of the first electric motor (32) and the axis of rotation of the second electric motor (34) lie parallel to each other.

Abstract: The invention relates to a gearbox (8) for a vehicle (2), comprising a housing (26) and a gear-shifting device which is arranged inside the housing. Said gearbox also comprises an electromechanical actuator (24) having a first electric motor (32) for performing a selection movement of the gear-shifting device, a second electric motor (34) for performing a gear-shifting movement of the gear-shifting device, and a control system (22) for receiving sensor signals, for processing said sensor signals and for transmitting control signals to the electric motors (32, 34). The rotational axis of the first electric motor (32) and the rotational axis of the second electric motor (34) are parallel.

Abstract: A planetary gear (1) in the form of a Wolfrom gear with a high transmission ratio. Such gears are preferentially used in handling gear engineering. In order to reduce the number of components required and improve the overall efficiency of the planetary gear, the step wheels (4, 6) of the step planet wheels (5) or the hollow wheels (11, 12) are conically toothed and have opposite conical inclinations. The planet carrier (10) is floating, that is, without a separate bearing. The planetary gear is used especially in industrial robots.

Abstract: A planetary gear having step planet gears is generically a Wolfrom gear which permits large ratios. Transmission of this type are used mainly in the handling technology. In order to improve the portability, friction, vibration and noise characteristics, step planet gears with separate toothed regions of the step gears are used. The modules of the step gears are graduated. The number of teeth is identical. Each of the teeth engagements with the ring gears can be optimized. The teeth on the step gears are preferably honed.