Patent ID: 11905147
Assignee: BERNWARD WELSCHOF
Field: Handling (Mechanical engineering)
Classification: CPC B  A | IPC A  B

Claim 0:
1. A method for an operation of a forestry winch comprising a rope drum driven by a drive motor and on which a rope is spooled, and further comprising:
a rope ejector roller for the rope driven by an additional drive motor,
whereby the rope is guided from the rope drum to the rope ejector roller and is deflected on the rope ejector roller, the method comprising:
operating the drive motor of the rope drum and the additional drive motor of the rope ejector roller so that as the rope is being unspooled from the rope drum and as the rope is being wound up onto the rope drum, generating a minimum rope pre-tension in the segment of the rope between the rope drum and the rope ejector roller,
wherein the drive motor of the rope drum is in the form of a hydraulic motor which is connected by a first pressure medium line and a second pressure medium line to a directional control valve device that controls the drive motor.