A vacuum lifting arrangement (10) having a lifting tube (30) and a suction foot (20) for engaging with an object (200) to lifted, is disclosed, said vacuum lifting arrangement having a pneumatic valve (40) fluidly connected to ambient air (80), wherein, during operation of the vacuum lifting arrangement, when an object is not engaged with the suction foot, an air-flow from the suction foot into the lifting tube is prevented by the valve which is in a closed position, and, upon generation in the suction foot of a pressure lower than the surrounding pressure, e.g. due to engagement with an object to be lifted, the valve will be in an open position, allowing an-air flow from the suction foot into the lifting tube. A lifting tube comprising a pneumatic valve for use in the lifting arrangement also disclosed.
VACUUM LIFTING ARRANGEMENT AND LIFTING TUBE FOR USE THEREIN
VAKUUMHEBEANORDNUNG UND DARIN VERWENDETES HEBEROHR
AGENCEMENT DE LEVAGE SOUS VIDE ET TUBE DE LEVAGE DESTINÉ À ÊTRE UTILISÉ DANS CELUI-CI
2025-07-16
Patent
Electronic Resource
English
| IPC: | B66C Krane , CRANES |
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