Abstract: A self-propelled work machine, in particular a tracked vehicle, such as a bulldozer, having a traction drive comprising at least one electric motor for driving at least one chassis wheel, in particular a chain wheel or a sprocket. The motor axis of rotation of the electric motor is arranged displaced and/or angled with respect to the wheel axis of rotation of the chassis wheel to be driven by the electric motor.

Abstract: The invention generally relates to a machine with an electric drive and an energy storage system for the intermediate storage of recovered energy. The invention relates in particular to machines that function statically or quasi-statically with a primary electric drive and a secondary hydraulic drive that function in cyclical movements, such as in the form of a material-transferring device like an excavator or crane, having an electric drive with at least one electric motor for driving the drive train of the machine and with an energy storage system for the intermediate storage of reverse power released during towing and/or braking operation and transferred from the drive train to the electric motor. The invention also further relates to a method for operating a machine with an electric drive, in which energy recovered during a towing or braking operation is used to compensate for system losses or is stored temporarily.

Abstract: The present invention relates to a crane, in particular to a revolving tower crane, having a boom rotatable about an upright slewing gear axis by a slewing gear drive and having an out-of-operation brake which allows and brakes rotary movements of the boom in the out-of-operation state. In accordance with the invention, the out-of-operation brake is configured as working electrodynamically and comprises an electric motor of the slewing gear drive which can be operated as an electric-motor brake.

Abstract: The invention generally relates to a machine with an electric drive and an energy storage system for the intermediate storage of recovered energy. The invention relates in particular to machines that function statically or quasi-statically with a primary electric drive and a secondary hydraulic drive that function in cyclical movements, such as in the form of a material-transferring device like an excavator or crane, having an electric drive with at least one electric motor for driving the drive train of the machine and with an energy storage system for the intermediate storage of reverse power released during towing and/or braking operation and transferred from the drive train to the electric motor. The invention also further relates to a method for operating a machine with an electric drive, in which energy recovered during a towing or braking operation is used to compensate for system losses or is stored temporarily.

Abstract: The present invention relates to a crane, in particular to a revolving tower crane, having a boom rotatable about an upright slewing gear axis by a slewing gear drive and having an out-of-operation brake which allows and brakes rotary movements of the boom in the out-of-operation state. In accordance with the invention, the out-of-operation brake is configured as working electrodynamically and comprises an electric motor of the slewing gear drive which can be operated as an electric-motor brake.

Abstract: The present invention relates to a self-propelled work machine, in particular to a tracked vehicle such as a bulldozer, having a traction drive comprising at least one electric motor for driving at least one chassis wheel, in particular a chain wheel or a sprocket. In accordance with the invention, the motor axis of rotation of the electric motor is arranged displaced and/or angled with respect to the wheel axis of rotation of the chassis wheel to be driven by the electric motor.

Abstract: A winch for elevating at a plant, in particular for cranes, cable-operated excavators, and similar construction machinery, has a hoisting drum, an electric motor for the drive of the hoisting drum which is received in the interior of the hoisting drum, and power electronics and/or control electronics for the electric motor including at least one frequency inverter and/or frequency converter. The power electronics and/or control electronics for the electric motor are received at least partly in the interior of the hoisting drum. With the compact construction of the winch, short cabling distances are achieved, interference emissions having negative effects on electromagnetic compatibility are avoided, and voltage overshoots impairing the service life of the inverter and the motor are reduced.

Abstract: The present invention relates to a winch for elevating plant, in particular cranes, cable-operated excavators and similar construction machinery, comprising a hoisting drum, an electric motor for the drive of the hoisting drum which is received in the interior of the hoisting drum as well as power electronics and/or control electronics for the electric motor comprising at least one frequency inverter and/or frequency converter. In accordance with the invention, the power electronics and/or control electronics for the electric motor are received at least partly in the interior of the hoisting drum. Not only short cabling distances are hereby achieved; interference emissions with negative effects on the electromagnetic compatibility are avoided; and voltage overshoots impairing the service life of the inverter and the motor are reduced, but also a particularly compact construction of the winch is achieved.