Скачать или смотреть Loading and unloading I-beams with acrane involves using specialized lifting gear likespreader beams

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Crane loading and unloading involves safely attaching lifting gear, hoisting cargo with precise control, moving it to its destination (vehicle, ship, stack), lowering it, and securing it, requiring constant communication, pre-lift checks (gear, ground, overhead), and following strict safety protocols like OSHA/ANSI standards to manage risks from moving parts, gravity, and stored energy. 

Key Steps

Preparation & Inspection: Inspect crane, lifting gear (slings, shackles), and the load itself for damage or loose parts; check the ground for stability; clear the area of obstructions and people.

Rigging: Attach slings/gear securely to the load, ensuring balanced points, often using methods like the "handshake" for pipes or specific container lifting points.

Lifting: Operator slowly lifts the load to check balance and secure attachment; lifts are done in clear view of banksmen/riggers.

Transportation: Crane swings the load carefully, avoiding obstacles, to the target location (ship hold, truck bed, storage).

Placement & Securing (Unloading): Lower the load precisely, then secure it with tie-downs (one per 10 ft) or chocks to prevent movement during transit.

Unrigging: Once the load is stable and the crane is clear, disconnect the lifting gear. 

Critical Safety Aspects

Communication: Use hand signals, radios, or lights between the operator, riggers, and banksmen.

Risk Management: Identify and control energy sources like moving parts, gravity, and stored tension in chains/slings.

Ground Stability: Ensure the base is compacted and can support the crane's weight and the load.

Regulations: Adhere to OSHA, ANSI/ASME, and manufacturer guidelines. 

Common Scenarios

Container Terminals: Use large cranes with spreaders to lift containers from trucks/barges onto ships.

Construction/Transport: Mobile cranes lift building materials (pipes, steel) onto trucks or structures, often using specific lifting attachments. 

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