Safety Precautions - Crosby IPBC Manual De Usuario

1. General
You have chosen a crosbyiP lifting clamp.
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If CrosbyIP clamps are maintained as described in this manual, they will remain in
optimum condition. We believe that CrosbyIP clamps are the most reliable lifting
clamps available. But using reliable tools does not automatically mean that practices
are reliable. The people who work with clamps play an equally important role in reliable
lifting. Ensure that everyone who works with CrosbyIP lifting clamps has been
instructed in the proper application of the clamps.
Inter Product BV provides a 10 year warranty for its clamps. In order to benefit from this
warranty programme and for more details on maintenance procedures, please consult
www.crosbyip.com/warranty for more information.
Please read and understand these instructions before using the lifting clamp.
check when
placing the clamp
1.1

Safety precautions

that slings are
not twisted.
Proper instruction for the personnel is of vital importance. This will contribute to
„
maximum reliability in the working environment.
it is not permitted
IPBC clamps may be applied per piece, per set, per three clamps or with several
to stay in the
„
pairs simultaneously for the lifting of steel plates, beams and structures. Ensure
danger zone of
that each clamp receives its equal share of the load. When using more than two
the load.
clamps an equalizing beam is recommended.
Hardness: With the standard clamps it is possible to lift steel with a surface
no changes may
„
hardness of 363 HV10. For harder steel types contact your CrosbyIP Customer
be made to
Service Centre.
crosbyiP clamps.
Contact your CrosbyIP Customer Service Centre before using this clamp for
never straighten,
„
plates and constructions that have a radius.
attempt to bend
Temperature: The standard lifting clamps may be used with temperatures that lie
or heat treat
„
between 100 ºC (212 ºF) and -40 ºC (-40 ºF). For other temperatures contact your
parts.
CrosbyIP Customer Service Centre.
There are restrictions for operation in special atmospheres (e.g. high humidity,
clamps suited for
„
explosive, saline, acid, alkaline).
stainless steel,
Loads: For proper application of the clamp consult the load diagram 1.
must be used
„
Ensure that all attachments between lifting eye and crane are properly fitted,
only for handling
„
secured and coupled.
stainless steel, to
Use chains/cables which are longer than the width of the plate to be lifted.
avoid contact
„
IPBC clamps may not be used when reeved.
corrosion.
Copyright © 2013 The Crosby Group LLC. All Rights Reserved.
Several plates may be transported or lifted per lift, only if the plates do not sag.
„
IPBC lifting clamps may be used for sagging, bended or joggled plates, however
„
in that case no more than one at the time.
When tilting beams it might happen that on a certain moment the beam can tip,
„
which may cause the beam to swing. Therefore make sure that you are standing
on a safe distance from the load.
During the descent of the load there may be no obstacles present under the load
„
that can impede the load causing a clamp to be unloaded. The clamps may only
release the load when it is in a stable position.
Remark: when handling the load, one should ensure that the load and or clamp
„
does not encounter obstacles which could release the load on the clamps
prematurely.
A clamp is a device that must be clean when used. Dirt has an adverse affect on
„
the operation and also on the reliability of the clamp. When the clamp is dirty and
greasy it can be cleaned with diesel oil or petroleum. Then blow dry with air or dry
with a cloth and apply a little lubricant. It is important to ensure that the gripping
surfaces are clean at all times. Regular cleaning will enhance the life and reliability
of the clamps.
1.2 inspection protocols
Prior to every application of the clamp it is important the clamp operator inspects the
clamp for proper functioning.
Attention must be paid to the following (see illustration 2 for part reference):
Ensure that the plate surface with which the clamp is to come into contact is free
„
of scale, grease, oil, paint, water, ice, moisture, dirt and coatings that might
impede the contact of the gripping surface with the plate.
Inspect pivot(s) (C) and camsegment (B) for wear and defects. The pivot(s) and
„
teeth must be sharp and free of dirt.
Check the body (N) and the jaw for damage, cracks or deformation (this may
„
indicate overloading). The clamp must open and close properly (when the
operation of the clamp is stiff or heavy, it should be removed from operation for
inspection).
Check the camsegment shaft (G) for readily detectable wear and/or damage
„
(check also the roll pin (P) which locks the camsegment shaft).
Check the torsion spring (M); this should, when pressing the camsegment (B), be
„
under visible tension. By releasing the the camsegment, the clamp should return
to its closed position without problems.
Check whether the W.L.L. and the jaw opening stamped on the body corresponds
„
with the load to be lifted.
Copyright © 2013 The Crosby Group LLC. All Rights Reserved.
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