System for controlling the operation of a hydraulic winch
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United States of America Patent
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May 24, 2022
Grant Date -
Jun 18, 2020
app pub date -
Dec 12, 2018
filing date -
Dec 12, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A system for controlling a winch assembly having a hydraulic motor, a drum, a cable, and a cable tension sensor. A controller is configured to access a winch load threshold defining a hold zone and a reel zone, and one of the hold zone and the reel zone including loads greater than the winch load threshold and another of the hold zone and the reel zone including loads less than the winch load threshold. The controller is further configured to determine whether the winch assembly is operating within the hold zone or the reel zone, and generate a zero flow command while the winch assembly is operating within the hold zone to prevent rotation of the hydraulic winch motor, and generate a pressure differential command while the rotatable winch drum is operating within the reel zone to permit rotation of the hydraulic winch motor.
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