Method for the operation of a forestry winch and forestry winch
AssigneeBernward Welschof
InventorsMichael Willenbücher, Claus Hofmann, Bernward Welschof
Life of this patent
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Abstract
A method for an operation of a forestry winch, which has a rope drum driven by a drive motor and on which a rope is wound up, and has 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 drive motor of the rope drum and the additional drive motor of the rope ejector roller are operated so that when the rope is unspooled from the rope drum, and when the rope is wound up onto the rope drum, a minimum rope pre-tension, in particular a constant minimum rope pre-tension, is generated in the segment of the rope between the rope drum and the rope ejector roller.
Claims19
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.
Dependencies are inferred from the claim text.