Liebherr-components Biberach Gmbh

Liebherr-mining Equipment Colmar Sas

Bernd Sommer

Jürgen Resch

Burkhard Emanuel Richthammer

Markus Merkle

Juergen Resch

Stefan Duelli

Sebastien Nicolas Hoffmann

Adrien Levaray

Kai Kugelstadt

Christian Fehrensen

Scott Bellamy

Jurgen Resch

Stefen Duelli

Dr Burkhard Emanuel Richthammer

Duelli Stefan

The present invention relates to a work machine, in particular to a construction machine and/or mining machine such as a crawler-type vehicle, a dump truck, mining device or the like, having an electric drive which comprises power electronics which have at least one transformer which has power connections covered by a cover for connecting power cables, wherein a manually actuable grounding device is provided for the all-pole grounding of the transformer and/or for short-circuiting an intermediate circuit connected thereto. The invention in this respect in particular also relates to such a transformer. In accordance with the invention, the manually actuable grounding device is coupled to a cover latch of the cover such that the cover can be unlatched by actuating the named grounding device.

Work machine having an electric drive

Methods and systems are provided related to a self-propelling work machine in the form of a tracked vehicle having an electric drive, with a generator drivable by an internal combustion engine, an auxiliary unit connected to the engine, and a braking apparatus for braking the work machine. The braking apparatus provides regenerative braking by the electric drive and comprises a feedback apparatus for feeding back electrical motor braking power of the electric motor to the generator to apply the motor braking power on the engine and on the auxiliary unit. A controller automatically increases or decreases the electrical load of the auxiliary unit based on the electrical motor braking power fed back to the engine and/or based on an engine speed.

Self-propelling work machine and method for braking such a work machine

The present disclosure relates to a work machine, in particular in the form of a dump truck or of a truck, having a diesel electric traction drive, comprising at least one internal combustion engine, at least one alternator, at least one set of power electronics as well as at least one electric motor, wherein the power electronics are divided into two or more functional modules and at least one, each, functional module has an encapsulated housing.

Work machine, in particular dump truck or truck

The invention relates to a work machine, in particular in the form of a dump truck or truck, having a diesel electric traction drive, wherein at least one alternator is or can be driven by at least one internal combustion engine of the work machine. In accordance with the invention, the current generation can also be reliably interruptible with a running internal combustion engine by interruption of the excitation circuit by means of a breaker switch.

The application describes a self-propelling work machine, in the form of a truck, having an electric drive comprising at least one electric motor, a generator drivable by an internal combustion engine for the power supply of the electric drive, and a braking apparatus for braking the work machine, wherein the braking apparatus provides a regenerative braking by the electric drive and a feedback apparatus for feeding back electrical motor braking power of the electric motor to the generator to apply the motor braking power on the internal combustion engine. The application further describes a method for braking the work machine. A braking control apparatus is provided for an automatic connection of a mechanical brake in dependence on the motor braking power fed back to the internal combustion engine and/or in dependence on the operating state of the internal combustion engine acted on by the fed back motor braking power.

Growing community of inventors

Biberach an der Riss, Germany

Bernd Sommer