G - Physics – 05 – D
Patent
G - Physics
05
D
G05D 27/00 (2006.01) B66B 5/02 (2006.01) B66B 15/06 (2006.01) B66B 19/00 (2006.01) G05D 13/00 (2006.01) G05D 19/00 (2006.01)
Patent
CA 2566001
A method of damping the oscillations during an emergency stop of an ascending single drum hoist system in a shaft having a conveyance, the mechanical brakes applying a braking force to the drum and the drum rotating in a first direction having a speed, comprising applying a first brake force when the drum speed reaches close to zero enabling the drum to roll back in an opposite direction to the first direction by a force generated from a first conveyance downward swing, and controlling the brake force during the first conveyance downward swing to dissipate the energy of the swing.
Méthode d'amortissement des oscillations lors d'un freinage d'urgence d'un système de levage à simple tambour ascendant sur un arbre comportant une charge, les freins mécaniques exerçant une force de freinage sur le tambour, ce dernier tournant dans une première direction à une certaine vitesse; la méthode consiste à exercer une première force de freinage lorsque la vitesse de rotation du tambour atteint presque zéro, ce qui permet au tambour de tourner en sens inverse au premier sens de rotation, sous l'effet d'une force créée par le premier mouvement d'oscillation vers le bas de la charge, et à contrôler la force de freinage lors de cette première oscillation vers le bas, afin de dissiper l'énergie dudit mouvement.
Abb Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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