Tube Lifters Jumbo and Lifting Devices VacuMaster - Fyns Kran ...

Design and FunctionVacuum Tube Lifter JumboThe vacuum tube lifter Jumbo consists of a vacuum generator, a lifting unit, an operating unit and suction pad.The Jumbo only uses vacuum to raise and lower loads.Picking up and Lifting the Load• The vacuum generator (pump, blower or ejector)generates a vacuum in the system by continuallyevacuating air.• The difference between the negative pressure andthe ambient pressure draws the workpiece to thesuction pad. This is generally called “picking up”the workpiece.• Once the workpiece has been picked up, the flowrate causes the lift tube to contract. The workpieceis then lifted.Lowering and Releasing the Load• Operating the control element feeds atmospheric airinto the system (“venting”). The vacuum is reduced.• This causes the lift tube to expand and the load islowered. The lifting height can be precisely controlledby controlling the amount of atmospheric air that isfed into the system. To release the load, the vacuumis completely eliminated through maximum venting(pressing the control button down fully).Picking up andlifting the loadLowering andreleasing the loadVacuum Lifting Device VacuMasterThe vacuum lifting device VacuMaster consists of a vacuum generator, load beam with vacuum reservoir and vacuumdistributor, an operator handle and suction plates. The vacuum holds the workpiece and a chain hoist is used to lift theworkpiece.Picking up and Lifting the Load• The vacuum generator (pump or ejector) generates avacuum first in the vacuum reservoir and then in thevacuum distributor by evacuating the air.• The difference between the negative pressure and theambient pressure draws the workpiece to the suctionplates when the device is placed onto the workpiece.This is generally called “picking up” the workpiece.Lowering and Releasing the Load• The lifting device with the load that has been pickedup is moved up and down by controlling the chainhoist.• To release the load, the vacuum in the distributor iseliminated through atmospheric venting (activatingthe valve). The vacuum reservoir remains filled for thenext lifting process.Picking up andlifting the loadLowering andreleasing the loadwww.schmalz.com47