Abstract: A method for protecting a lifting member against an overload is described. The lifting member includes a lifting drum over which a cable is wound at the end of which a load is fixed. The lifting drum is mechanically connected to an electric motor capable of ensuring its rotation. The mechanical connection includes a clutch or equivalent device, has at least two distinct operating thresholds: a first threshold, the exceeding of which generates the freewheel operation of the lifting drum with respect to the kinematic chain coming from the electric motor, and a second threshold, of value greater than that corresponding to the nominal load of the lifting member, but of value less than that of the first threshold, generating the braking of the rotation of the lifting drum, and an attempt to progressively stop said rotation of the drum.

Abstract: This method for protecting a lifting member against an overload, the lifting member comprising a lifting drum over which a cable is wound at the end of which a load is fixed, said lifting drum being mechanically connected to an electric motor capable of ensuring its rotation, the mechanical connection comprising a clutch or equivalent device, comprises at least two distinct operating thresholds: a first threshold, the exceeding of which generates the freewheel operation of the lifting drum with respect to the kinematic chain coming from the electric motor; a second threshold, of value greater than that corresponding to the nominal load of the lifting member, but of value less than that of the first threshold, generating the braking of the rotation of the lifting drum, and an attempt to progressively stop said rotation of the drum.