The Crosby Group IPBC (3) CrosbyIP lifting clamp User Manual

: June 10, 2024
: The Crosby Group

Table of Contents

IPBC Horizontal lifting with pretension
General
Safety precautions
Inspection protocols
How to operate the clamp
A reliable clamp, a secure basis for lifting
Explanation test certificate
Customer Service
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

The Crosby Group IPBC (3) CrosbyIP lifting clamp
$The Crosby Group IPBC $3$ CrosbyIP lifting clamp$

IPBC Horizontal lifting with pretension

General

You have chosen a CrosbyIP lifting clamp.

CrosbyIP lifting 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.

CrosbyIP provides a 10 year warranty for its clamps. To keep CrosbyIP lifting clamps in optimum condition and keep warranty, regular maintenance is important. Preventive maintenance and repair shall be carried by a repairer authorized by CrosbyIP. In order to benefit from this warranty programme and for more details on maintenance procedures, please consult www.thecrosbygroup.com/resources/crosbyip-10-year- guarantee for more information.

Please read and understand these instructions before using the lifting clamp.

Check when placing the clamp that slings are not twisted.

It is not permitted to stay in the danger zone of the load.

No changes may be made to CrosbyIP clamps. Never straighten, attempt to bend or heat treat parts.

Clamps suited for stainless steel, must be used only for handling stainless steel, to avoid contact corrosion.

Safety precautions

Proper instruction for the personnel is of vital importance. This will contribute to maximum reliability in the working environment.
IPBC clamps may be applied per piece, per set, per three clamps or with several pairs simultaneously for the lifting of steel plates, beams and structures.
Ensure that each clamp receives its proportionate share of the load. When using two clamps or more, a spreader beam is recommended.
Hardness: With the standard clamps it is possible to lift steel with a surface hardness of 363 HV10. For harder steel types contact your CrosbyIP Customer Service Centre.
Contact your CrosbyIP Customer Service Centre before using this clamp for plates and constructions that have a radius.
Temperature: the operating temperature is between –40 ºC (–40 ºF) and 100 ºC (212 ºF). For other temperatures contact your CrosbyIP Customer Service Centre.
There are restrictions for operation in special atmospheres (e.g. high humidity, explosive, saline, acid, alkaline).
Loads: For proper application of the clamp consult the load diagrams 1.
Ensure that all attachments between lifting eye and crane are properly fitted, secured and coupled.
Use chains/cables which are longer than the width of the plate to be lifted. IPBC clamps may not be used when reeved.
Several plates may be transported or lifted per lift, only if the plates will 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 effect on the operation and also on the reliability of the clamp. When cleaning the clamp care should be taken to ensuring that moving parts are lubricated and the gripping surfaces are clean. Regular cleaning will enhance the life and reliability of the clamps.

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(s) 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. When this is no longer readable, remove the clamp from operation.

The pivot(s) and the camsegment are the most critical parts in the clamp and require extra attention during inspection. Ensure in any event for good light during inspection. Observe the following rules during every inspection:

Pivot(s): Reject when the sharpness of one ring is damaged or worn for 50% or more.
Camsegment: Reject when the sharpness of one tooth is damaged or worn for 50% or more.

This type of clamp can prone to deformation of the hole in which the chain (D-shackle) impinges, resulting in the hole becoming oval. When that is the case the clamp should be removed from service immediately. Deformation in this part is mainly due to exceeding of the maximum side loading angle of 15°. The maximum loading angles are displayed in the loading diagrams 1.

On the inside of the front cover illustrations have been included of damaged and worn (rejected) pivots and camsegments:

One complete tooth not sharp and one damaged
Two teeth damaged for 50%
One tooth damaged for 100% and one tooth damaged for 50%
Two rings damaged for 100%
Interior ring damaged for 100%

These areas of damage, precisely as wear, are not covered by the warranty.
In most cases however the areas of damage are much less extensive. In doubtful cases an authorised repairer should assess the clamp.

How to operate the clamp

IPBC lifting clamps are suitable for the horizontal lifting and transport of one or more steel plates, beams and structures as well as tilting beams from position H to position I.

See illustrations 3 – 11 for part reference.
How to operate the clamp

Lifting

Open the clamp by pulling up the grip on the camsegment (B) (3).
Place the clamp securely on the material to be lifted, so that the jaw of the clamp rests against the plate or flange (E). Keep base against the load (4).
Close the clamp by letting go the grip. The clamp will remain on the material in pretensioned position, allowing lifting to commence (5).
As soon as the load is at its destination let the crane hook descend until the clamp is fully free of load, meaning that the lifting chain is no longer taut.
The clamp can now be removed from the load by pulling up the camsegment (B) again. The clamp may now be used again immediately (6).

Tilting

Open the clamp by pulling up the grip on the camsegment (B) (7).
Place the clamp securely on the material to be lifted, so that the jaw of the clamp rests against the plate or flange (E). Keep base against the load (8).
Close the clamp by letting go the grip. The clamp will remain on the material in pretensioned position, allowing lifting to commence (9).
Pull gently the chain taut. By continuing the lifting, the clamp will tilt over to point R. At a certain moment the beam will tip to the I-position (10).
As soon as the load is at its destination let the crane hook descend until the clamp is fully free of load, meaning that the lifting chain is no longer taut.
The clamp can now be removed from the load by pulling up the camsegment (B) again. The clamp may now be used again immediately (11).

A reliable clamp, a secure basis for lifting

10 Year warranty preventive maintenance procedure:
Parts should be replaced only when they no longer meet our standards.

10 Year warranty repair procedure:
During every repair service the most critical parts, being pivot(s), camsegment and spring will be replaced and, when necessary, any rejected parts will be replaced.

Please consult www.thecrosbygroup.com/resources/crosbyip-10-year- guarantee for more information on maintenance procedures.

Maintenance without 10 year warranty: Annually clamps are subjected to inspection and parts will be replaced only when they no longer meet our standards.
CrosbyIP authorised repairer

Explanation test certificate

EU Declaration of Conformity: We hereby declare that the equipment described at the front page conforms to the relevant fundamental safety and health requirements of the appropriate EU Directives, both in its basic design and construction as well as in the version marketed by us. This declaration will cease to be valid if any modifications are made to the machine without our express approval.

Relevant EU Directives: EU Machinery Directive (2006/42/CE) Applied standards: EN 13155 and ASME B30.20

UK Declaration of Conformity: We hereby declare that the equipment described at the front page meets the essential safety requirements of the Supply of Machinery (Safety) Regulations 2008 and section 6 of the Health and Safety At work Etc. Act. 1974. This declaration will cease to be valid if any modifications are made to the machine without our express approval.

Applied standards: EN 13155 and ASME B30.20

Manufacturer
CrosbyIP Lifting Clamps – Inter Product BV
Celsiusstraat 51
6716 BZ Ede
The Netherlands
Ede, 25-1-2021 W. Fabricius

WARNING

Loads may disengage from clamp if proper procedures are not followed.
A falling load may cause serious injury or death.
The clamp shall not be loaded in excess of its rated load or handle any load for which it is not designed. Read instructions in user manual to determine minimum load permitted and proper load thickness.
Never operate a damaged or malfunctioning clamp, or a clamp with missing parts.
Clamp not to be used for personnel hoisting.
Prohibition of handling above persons.
Do not leave suspended loads unattended.
Operator and other personnel shall stay clear of the load.
Do not lift loads higher than necessary.
Do not make alterations or modifications to clamp.
Do not remove or obscure warning labels.
See ANSI/ASME B30.20 BELOW-THE-HOOK LIFTING DEVICES for additional information.
Read, understand, and follow these instructions and the product safety information in user manual before using clamp.