Bauer Maschinen Gmbh

Matthias Osterland

Marco Voigt

Rupert Haas

A construction machine is provided, such as a drilling rig having a mast along which a tool is movably mounted. The tool is suspended on a cable actuated by a cable winch for raising and lowering the tool, the cable winch being driven by an electric motor as a winch drive in a drive mode. The electric motor is designed to also operate in a recuperation mode in which the electric motor generates electrical energy when the tool is lowered and outputs the electrical energy to an energy store. A controller is designed to actuate the electric motor depending on a specifiable target value such that the cable is tensioned both in the drive mode and in the recuperation mode of the electric motor.

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Schrobenhausen, Germany

Matthias Osterland