DID YOU KNOW?
Did You Know?
What is the proper way to secure a shackle pin as
the attachment between the crane line and the leads?
Can you weld the shackle pin (or bolt), or does
this weaken or fatigue the metal? Is there a “best
practice” in the industry for addressing this question?
There are two ways to secure the shackle pin to the shackle
– bolt, nut and cotter pin, or mousing.
A bolt, nut and cotter pin, such as a Crosby shackle,
will solve the problem quickly and efficiently. This type of shackle
is intended to be used in a more “permanent” situation, and the
attaching point to the leads is a good example.
Caution – pay close attention to how the shackle is orientated.
It is possible that the hoist line used for the pile hammer may rub,
and then possibly wear the cotter pin, causing potential damage to
the hoist line or the cotter pin (key) being dislodged over time. A
documented inspection of the leads, hammer and all of the associated
rigging is a must. If you cannot lay the leads down for an
inspection, get some quality binoculars, an aerial lift or possibly a
drone to survey the shackle condition and the leads and the boom
while you’re at it.
Another option is to “mouse” a screw pin shackle. It, too, is an
effective way to secure the pin. Caution must be used to ensure the
shackle does not rub on the leads and ultimately cut the mousing.
Again, daily inspection is key.
One must never weld to a shackle or hook. The welding process
will change the properties of the drop forged heat-treating process
and lead to a failure. Even a “tack weld” is forbidden. t
VERSA-STEEL INC.
“Helping To Build Firm Foundations Since 1976”
www.piletips.com
Versa-Bite®
Complete Line of:
H Versa-Bite® Piling Accessories
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1618 NE 1st Avenue Portland, OR 97232
Call 1-503-287-9822 to Order Versa-Bite® Products Now,
or email your order to sales@versasteel.com
Product details available at: www.piletips.com
GRLWEAP Software
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sales@pile.com
+1 216-831-6131 www.pile.com/grlweap
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