vacuum lifts

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How A Self Powered Mechanical Vacuum Lifter Works

The Upward/ Downward Movement of the Hoist Controls Vacuum Attachment and Release.

The Simple On/Off Cycle is Quick and Reliable.

Basic Operating Procedure

The lifter hangs from a crane hook and is lowered onto the load until the chain is slack.
The lifter is pulled up by the hoist, creating a vacuum, and picks up the load.
The lifter and load are set down until the chain is completely slack, which releases the vacuum.
The lifter can now be raised without the load.
Set the lifter down until the chain is completely slack and you're ready to pick up the next load.

Technical Description
The vacuum generator consists of a free-moving piston within a closed cylinder. A rubber rolling diaphragm forms an airtight seal between the piston and cylinder. Since the integrity of this seal does not depend on metal-to-metal contact or a tight fit, it does not lose efficiency with use.

The vacuum attach-and-release cycle is controlled by an automatic self-cycling valve located in the bottom of the piston. When the unit is lowered onto the load and the suspension chain slackens, a cam automatically closes the piston valve. The hoisting action then pulls up the piston, creating a powerful vacuum inside the cylinder and underneath the vacuum pads.

When the load is completely set down, and the suspension chain is again slackened, the cam opens the piston valve, releasing the vacuum. The lifter then can be raised, ready for the next pickup. Attach and release are instantaneous. Since the valve sealing disc can only cycle when the chain is completely slack, it cannot shift positions while in use and will not accidentally release the load.

Unique Features

Instant attach and release is provided via the hoist up and down movement. The attach and release alternates each lift cycle for fast, efficient handling. Mechanical vacuum lifters increase the speed and efficiency of the horizontal handling of sheet and plate, panels, and all types of nonporous materials.
Simple to operate. One person can control the entire operation. No oil fumes or noise pollution.
Easy to Maintain. Only the highest quality components and superior construction are used with few moving parts.
Extremely Safe. Load cannot be released until it is set down on a surface.
Self Pwoered Mechanical Vacuum Lifters are suitable for 100% duty cycle 24 hour a day operation. It will never overheat or burn out.
Easy to Maintain and Keep Operating in Heavy Production Environments. No wires or hose to tangle up in the hoist chain; no fuses, motors or switches to replace. Self Pwoered Mechanical Vacuum Lifters cannot overheat and are not affected by electric power brownouts.
Vacuum Lifters comply fully with and meet the standards of US ANSI ASME Standard B30.20 for below-the-hook lifting devices, as well as complying with OSHA and European CE Mark requirements.

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