US 12,227,078 B2
Work machine
Fabian Weber, Wangen (DE)
Assigned to LIEBHERR-WERK NENZING GMBH, Nenzing (AT)
Filed by Liebherr-Werk Nenzing GmbH, Nenzing (AT)
Filed on Sep. 13, 2023, as Appl. No. 18/466,606.
Claims priority of application No. 20 2022 106 309.5 (DE), filed on Nov. 10, 2022.
Prior Publication US 2024/0157797 A1, May 16, 2024
Int. Cl. B60L 1/00 (2006.01); B66C 13/22 (2006.01); E02F 9/20 (2006.01)
CPC B60L 1/20 (2013.01) [B66C 13/22 (2013.01); E02F 9/2091 (2013.01)] 10 Claims
OG exemplary drawing
 
1. Work machine, comprising:
a primary energy source for feeding electric energy into a link,
a gear for performing a task of the work machine,
at least one electric drive connected to the link to operate the gear of the work machine,
a holding brake for fixing or releasing the gear, and
an energy store connected to the link to provide electric energy demanded from the link upon actuation of the gear and/or to absorb electric energy fed into the link,
wherein
in the event of an emergency lowering of the gear, the at least one electric drive is configured to convert kinetic energy that is produced into electric energy and to feed the electric energy into the link, wherein
in the event of an unavailability or failure of the energy store prevailing simultaneously with the emergency lowering, the primary energy source is configured to absorb the energy fed into the link by the electric drive.