Abstract: A device for switching at least two partial gear mechanisms, namely a first partial gear mechanism and a second partial gear mechanism, each having at least two gear stages. The device comprising an actuator connected for drive purposes to a rotatable component, a first switching device for switching the first partial gear mechanism and a second switching device for switching the second partial gear mechanism both of which are arranged on the rotatable component, and an electric drive axle for a motor vehicle comprising a first drive wheel, a second drive wheel and such a device.

Abstract: A device for switching at least two partial gear mechanisms, namely a first partial gear mechanism and a second partial gear mechanism, each having at least two gear stages. The device comprising an actuator connected for drive purposes to a rotatable component, a first switching device for switching the first partial gear mechanism and a second switching device for switching the second partial gear mechanism both of which are arranged on the rotatable component, and an electric drive axle for a motor vehicle comprising a first drive wheel, a second drive wheel and such a device.

Abstract: A device for switching at least two partial gear mechanisms, namely a first partial gear mechanism and a second partial gear mechanism, each having at least two gear stages. The device comprising an actuator connected for drive purposes to a rotatable component, a first switching device for switching the first partial gear mechanism and a second switching device for switching the second partial gear mechanism both of which are arranged on the rotatable component, and an electric drive axle for a motor vehicle comprising a first drive wheel, a second drive wheel and such a device.

Abstract: A method for reducing the noise emission of a transformer, the transformer tank of which is filled with liquid and the tank wall of which vibrates during operation, is provided. The method is characterized by the sequence of the following method steps: detecting natural frequency values of the tank wall for at least one excitation frequency; determining at least one eigenmode for which the vibration of the tank wall is composed at an excitation frequency, from the natural frequency values, wherein areas of large curvature are determined on the tank wall; arranging at least one vibration loading device in at least one of said areas; and controlling the at least one vibration loading device by means of a control device in order to counteract the vibration of the tank wall.

Abstract: A method for reducing the noise emission of a transformer, the transformer tank of which is filled with liquid and the tank wall of which vibrates during operation, is provided. The method is characterized by the sequence of the following method steps: detecting natural frequency values of the tank wall for at least one excitation frequency; determining at least one eigenmode for which the vibration of the tank wall is composed at an excitation frequency, from the natural frequency values, wherein areas of large curvature are determined on the tank wall; arranging at least one vibration loading device in at least one of said areas; and controlling the at least one vibration loading device by means of a control device in order to counteract the vibration of the tank wall.