Using the Shackles
Shackle
Installation
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With the pin in the retracted position (i.e. indicator bar protruding) slide the throat of the shackle over the top of the pile. Align the shackle pin over the lifting hole. Note - the distance of the hole centre down from the pile top must suit the shackle throat depth exactly for a safe lift. |
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When you are ready to insert the pin, strike the indicator bar. This action should release the retaining mechanism and project the pin through the lifting hole. |
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The indicator bar should be flush with the barrel. No part of it should protrude. Do not lift the pile if the bar is protruding. |
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With the pin properly inserted, place the safety ring (the largest diameter ring) over the barrel assembly. This should ensure that no pull on the release wire could be achieved without removing the ring first. Now lay out the release rope along the pile so that it does not become snagged during lifting. You are ready to lift. |
Shackle Release
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When
the pile is correctly positioned and secured by guide frames the safety
ring should first be released. This is done by whipping the release rope away from the pile. The safety ring should come off the barrel assembly. If it does not come off first time, then repeat until it does. |
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A firm pull on the release rope should then retract the pin. The locking mechanism will hold it in the retracted position - the indicator bar protruding from the barrel assembly confirms this. Release is now complete and ready for the next lift. |
Lifting
Pairs of Piles
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When lifting piles in pairs it is necessary to use a pair of shackles. These can be supplied mounted on a two-legged steel wire rope sling. The advantage being that the standard pair of shackles with lifting sling can be fitted to any pair of U or Z pile types. The ring at the top of the sling can be hooked directly onto a standard crane hook, 'D' shackle or fork anchor. The sling also enables the shackles to be turned to fit opposite faces of a box or tubular piles. |
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