Free fall winch
AssigneeLiebherr-Components Biberach GmbH
InventorsNorbert Hausladen, David Führle
Life of this patent
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Abstract
The invention relates to a free fall winch comprising a drum, which can be rotationally driven by a winch drive, wherein a free fall brake is provided for braking the drum in free fall operation. According to the invention, a torque acting on the free fall winch, which depends on the free fall braking torque, is detected by means of a detection device, and a brake actuation force with which the free fall brake is actuated is controlled or adjusted by a control device according to the detected torque.
Claims21
A free fall winch comprising:
- a drum rotationally drivable by a winch drive;
- a free fall brake for braking the drum in free fall operation;
- a detection device for detecting a torque that acts at the free fall winch and that depends on a free fall brake torque of the free fall brake;
- and
- a control device for controlling a braking control force of the free fall brake in dependence on the detected torque.
A method of operating a free fall winch that has a drum, a winch drive for the rotational driving of the drum, and a free fall brake for braking the drum in free fall operation, the method comprising:
- detecting a torque at the free fall winch that is induced by a braking torque of the free fall brake in free fall operation of the free fall winch by a torque sensor;
- and
- automatic controlling and/or adapting of a braking control force actuating the free fall brake in dependence on the detected torque.
Dependencies are inferred from the claim text.