Vacuum lifting device

B - Operations – Transporting – 66 – C

Patent

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Details

B66C 1/02 (2006.01) B25B 11/00 (2006.01)

Patent

CA 2173858

A vacuum lifting device that is particularly suitable for lifting refractory slabs used to line aluminium smelting cells includes suction cups (22, 23) that engage the object to be lifted (48). A plurality of mechanical supports (24, 25) can be moved so that they extend partly underneath the object being lifted when the object is raised from the ground. The mechanical supports can hold the object in case of vacuum failure and improve the safety of the device. An optional automatic override can ensure that the mechanical supports are in the down position in the case of vacuum failure.

Un dispositif de levage par le vide, spécialement conçu pour lever des dalles réfractaires servant à revêtir des cuves de fonderie d'aluminium, comprend des ventouses (22, 23) entrant en contact avec l'objet qui doit être levé (48). Une pluralité de supports mécaniques (24, 25) peuvent être déplacés de manière à s'étendre en partie sous l'objet en cours de levage lorsque celui-ci est soulevé du sol. Ces supports mécaniques peuvent maintenir l'objet en cas de défaillance du système assurant le vide, et ils améliorent la sécurité du dispositif de levage. Un dispositif d'intervention automatique facultatif peut assurer la mise en position basse des supports mécaniques en cas de défaillance du système assurant le vide.

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