| 摘要 |
An apparatus for handling layers of palletised goods, including a vertically displaceable lift head (2) with a mainly horizontal suction face which is substantially adjusted in size for a pallet, and which comprises downwardly open suction chambers (8) which via individual ball valves and an air distribution chamber are connected to a centrifugal blower (4), which is incorporated in the lift head (2) and constitutes the vacuum source of the apparatus. The suction face moves downwards against the upper side of an upper layer of individually or groupwise packed goods on a pallet. The ball valves are light, thin-walled spherical valve bodies (10). The ball valves are closed if the associated suction chamber (8) is not blocked downwardly by contacting the upper side of the goods on the uppermost pallet layer. The lift head (2) along the outer sides of the suction face comprises a vertically adjustable skirt with inflatable squeezing pads arranged for exerting an inwardly directed pressure on the outer sides of the goods of the upper pallet layer. Each valve has provided arresting means to prevent the valve balls (10) from shutting off the valves.
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