System arrangement of lifting mechanisms and method of operating the system arrangement
AssigneeM.A.T. Malmedie Antriebstechnik GmbH
InventorsChristof Lautwein, Christoph Wagener
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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.
Claims13
A system arrangement for lifting mechanisms comprising:
- 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);
- at least one safety brake (4, 4′), and
- at least one active motor locking assembly (5, 5′) to hold the load when the drive motor (1, 1′) is slowed down;
- a stator ring gear (20) fixedly connected to a housing of the drive motor (1, 1′), the stator ring gear (20) having a face tooth arrangement (21) operative in an axial direction;
- and a rotor ring gear (22) non-rotatably arranged on a motor shaft (15) of the drive motor (1, 1′), the rotor ring gear (22) being axially displaceable thereon and having an equivalent face tooth arrangement (23);
- wherein the rotor ring gear (22) is coupleable to the stator ring gear (20) to lock the drive motor (1, 1′).
Dependencies are inferred from the claim text.