| 摘要 |
The invention relates to a braking device (10) with a spindle gear (18, 20) for actuating a friction brake (14, 16) of a gear mechanism (30, 36) for driving the spindle gear (18, 20) and having an electric actuating motor (40) for driving the gear mechanism (30, 36). For reasons of safety, the invention proposes a second electric resetting motor (34) to release the friction brake (14, 16), thereby providing the advantage, in particular, when the two electric motors (34, 40) are connected to independent power supplies, that the friction brake (14, 16) can be released with the other electric motor (40, 34) when one of the two electric motors (34, 40) or one of the two power supplies fails. |
