Abstract: A drive train is provided for hoisting gears, and in particular for hazardous transports. The drive train includes a drive motor (1), a cable drum (6) connected thereto, a reduction transmission (5) arranged between the drive motor (1) and the cable drum (6), a service brake (4) provided between the drive motor (1) and the reduction transmission (5) and a safety brake (7). To prevent damage to the reduction transmission (5) in the event of an emergency stop braking an automatic overrun disconnect means can be provided between the drive motor (1) and the service brake (4). The overrun disconnect means is preferably in the form of a freewheel (2).

Abstract: A system arrangement for the drive train of lifting mechanisms, such as crane lifting mechanisms, is disclosed. The system arrangement includes at least one drive motor (1, 1?), at least one cable drum (2, 2?) connected thereto, a reduction transmission (3) arranged between the drive motor (1, 1?) and the cable drum (2, 2?), an automatic overrun shutdown freewheel (6), and at least one safety brake (4, 4?). To optimize such a drive train, at least one active motor locking assembly (5, 5?) is utilized to hold the load when the drive motor (1, 1?) is decelerated electrically to a rotary speed of zero. The active motor locking assembly is utilized instead of at least one passive operating brake.

Abstract: An overload protection device for cable lines, and in particular in cranes, is provided, having at least one electronic overload safety means. The overload protection device is provided to prevent any kind of damage which can be caused by an overload. That is achieved by providing a mechanical or magnetic overload protection device (1) in addition to the electronic overload safety means. The overload protection device (1) is integrated into the cable line or arranged at the cable fixing point and responds when a permissible cable tension force is exceeded and implements a cable extension.

Abstract: 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.

Abstract: 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.