Lifting Gear Cranes

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LIFTING GEAR

Transcript of Lifting Gear Cranes

Page 1: Lifting Gear Cranes

LIFTING GEAR

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Cranes- pedestal- floating/heavy lift- HIAB/knuckle type- boat davits

Derricks- single- union purchase

Hoists- electric- air- chain

Types of Lifting Gear

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Cranes Basic Components

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Pedestal Crane

Reefer

General Cargo

Bulk Carriers

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Pedestal crane

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STANDARD FEATURES:

1. Level luffing jib

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Limit Switches:

Limit switches are designed to shut the crane down whenit exceeds safe working parameters.

• Max. hook height• Max. jib elevation• Min. jib elevation• Ship out of trim• Dancing roller arrangement

Limit By-Pass

SWL Markings

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Pedestal Crane

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Pedestal with grab

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Floating & Heavy Lift

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HIAB & knuckle crane

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Boat Davits

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SWL markings for Cranes

SWL details must be marked:

on an external part of the the cranes structure, or

on derrick crane, or

on a plate near the heel of the derrick

and

in the driver’s cabin within easy view of driver

12T 30m / 20T 10m

SWL Outreach

Derrick/crane boom

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Derricks

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Union Purchase

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Union Purchase

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HOISTS

Chain

Electric

Air

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Chain hoist:• High tensile lifting chain• Auto brake when power off• Max. and Min. hook height• SWL marked on hook and unit

Electric wire rope hoist: • Similar to chain hoist• Grooved drum with sliding rope guide

Chain Block:• Manual operated• SWL marked on unit• High tensile lifting chain

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Inspect all equipment for defects.

Determine weight of load and position of the c of g

Decide method of slinging and lifting the load.

Ensure load is free to be lifted

Clear communications/ signals

Apply the load gradually to avoid exceeding the S.W.L.

Check the load's balance .

When lowering, stop a short distance above the landing site

NEVER leave controls unattended with a load suspended

Check lifting equipment before returning to stowage.

Procedure for Moving Loads

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Stay clear of loaded boom

Heavy weights should never be allowed to drop

Avoid swinging loads. Shift loads under hook.

Do not exceed SWL

All motion with heavy lifts should be slow

Procedure for Moving Loads

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SIGNALS: UNION PURCHASE

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SIGNALS: CRANE

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