| 摘要 |
The lifting gear comprises two motors ( 1, 1' ) that are connected to a transmission ( 6 ) via respective drive shafts ( 2, 2' ), couplings ( 3, 3' ), with fitted brake disks ( 4, 4' ) or brake drums, brakes ( 14, 14' ) and transmission input shafts ( 5, 5' ). The transmission ( 6 ) drives cable drums ( 9, 9' ) via transmission output shafts ( 7, 7' ) and couplings ( 8, 8' ). The cable drums have a cable pull ( 12, 12' ) and fitted brake disks ( 10, 10' ) or brake drums and safety brakes ( 11, 11' ). The inventive lifting gear is characterized by comprising, in the drive shafts ( 2, 2' ), devices ( 13, 13' ) that completely or partially disconnect the motors ( 1, 1' ) from the transmission ( 6 ) when an excess load exceeds the predetermined load. They are monitored on both sides of the devices ( 13, 13' ) and the brakes ( 14, 14' ) and/or safety brakes ( 11, 11' ) are activated in the event of disconnection.
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