Disclosed is a winch control apparatus for a crane, which comprises: a first compensation torque value calculation section (21) which calculates, when a hoisting manipulation being input, based on a difference speed between a detected rotational speed and a target speed according to a manipulation amount of the hoisting manipulation, a first compensation torque value for enabling an electric motor to generate a reverse-rotation-preventing torque which is a torque in a hoisting direction and corresponding to the difference speed; and a second compensation torque value calculation section (22) which calculates, when the hoisting manipulation being input, based on a detected load value, a second compensation torque value for enabling the electric motor to generate a load bearing torque which is a torque in the hoisting direction and necessary for bearing a load of the load value.
WINCH CONTROL APPARATUS AND CRANE
WINDENSTEUERUNGSVORRICHTUNG UND KRAN
APPAREIL DE COMMANDE DE TREUIL ET GRUE
2019-10-30
Patent
Electronic Resource
English
Crane winch protection device, crane and crane winch protection method
European Patent Office | 2020
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