The electric winch device includes a required braking force estimation section (44) which estimates a required braking force which is a braking force required to stop a free-falling object at a position at an allowable stopping height set by a setting unit; a braking force determination section (50) which determines, out of an operational braking force estimated by an operational braking force estimation section, each of a first braking force to be borne by a braking device and a second braking force to be borne by a braking force which is generated in an electric motor due to consumption of regenerative power; and a control section (52) which causes the braking device to apply the first braking force, which has been determined by the braking force determination section, to a winch drum. The braking force determination section (50) determines the first braking force to be a braking force equal to or greater than the required braking force when, at a time of stopping of the free-falling object, the operational braking force estimated by the operational braking force estimation section (44) is equal to or greater than the required braking force.
ELECTRIC WINCH DEVICE
ELEKTRISCHE WINDE
DISPOSITIF DE TREUIL ÉLECTRIQUE
2019-02-27
Patent
Electronic Resource
English
IPC: | B66D Haspeln , CAPSTANS / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / B66C Krane , CRANES / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |