摘要:
Das Hubwerk hat zwei Motoren (1, 1'), die jeweils über Antriebswellen (2, 2'), Kupplungen (3, 3'), mit angesetzten Bremsscheiben (4, 4') oder Bremstrommeln, Bremsen (14, 14') und über Getriebeeingangswellen (5, 5') mit einem Getriebe (6) verbunden sind. Das Getriebe (6) reibt über Getriebeausgangswellen (7, 7') und Kupplungen (8, 8') Seiltrommeln (9, 9') an. Die Seiltrommeln haben einen Seilzug (12, 12') und angesetzte Bremsscheiben (10, 10') oder Bremstrommeln und Sicherheitsbremsen (11, 11'). Erfindungsgemäß hat das Hubwerk in den Antriebswellen (2, 2') Einrichtungen (13, 13'), die bei einer eine vorgesehene Last übersteigenden Überlast die Verbindung zwischen den Motoren (1, 1') und Getriebe (6) ganz oder teilweise trennen. Auf beiden Seiten der Einrichtungen (13, 13') werden diese überwacht und bei einer Trennung die Bremsen (14, 14') und/oder Sicherheitsbremsen (11, 11') aktiviert.
摘要:
The invention relates to a drive train for hoisting gear, especially for hazardous transportations, comprising a drive motor (1), a rope drum (6) connected thereto, a reduction gear (5) arranged between the drive motor (1) and the rope drum (6), a service brake (4) provided between the drive motor (1) and the reduction gear (5), and a safety brake (7). To prevent damage to the reduction gear (5) in the event of an emergency stop, an automatic overrun cutoff can be provided between the drive motor (1) and the service brake (4). The overrun cutoff is preferably designed as a freewheel mechanism (2).
摘要:
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.
摘要:
The invention relates to an overload protection device for cable strands, in particular in cranes, having at least one electronic overload prevention mechanism. An overload protection device is to be devised which prevents, in cranes, any type of damage that can be caused by overload. This is achieved in that, in addition to the electronic overload prevention mechanism, a mechanical or magnetic overload protection device (1) is provided, in that the overload protection device (1) is integrated into the cable strand or is provided at the cable fixed point and in that the overload protection device (1) reacts when an allowable cable tractive force is exceeded and brings about a cable extension.