Introduction To Lorry Crane Operation (Theory)

Identify common crane operation accidents, including overloading beyond capacity, unstable lifting without stabilizing features, and loads falling or striking workers, and collisions with overhead bridges.

Examine accidents in lorry crane operation, focusing on overload, stability, and outrigger use. Highlight risks of overhead clearance and the importance of closing the boom after lifting.

Explore the rules and regulations governing lorry crane operation, emphasizing training and certification by an approved institution, penalties for fatalities and corporate violations, and the importance of proper PPE.

Identify lifting gear components such as slings, hooks, shackles, and bolts, and explain how data plates show the safe working load and mandatory 12-month inspections by an authorized examiner.

Identify lifting machines such as lorry cranes, crawler cranes, tower cranes, and overhead cranes, and learn about safe working load and data plates. Explore lifting platforms with six-month inspections.

An audio buzzer alerts the operator when the crane is not in its home position, triggering a loud alarm in the driver cabin to prevent overhead collisions.

Outline four lifting roles: lifting supervisor, lifting machine operator, rigging man, and signalman; supervisor ensures safety, operator runs the logic train, rigging man rigs, and signalman communicates.

Oversee lifting operation as the lifting supervisor, trained and certified by an approved institution. Coordinate with all parties, briefing the lifting plan and sequence, identifying hazards to ensure safety.

Learn the roles of a lifting machine operator, including required training and certification, briefing by the supervisor, signalman coordination, and pre-lift checks to ensure safe lifting only.

Describe the riggerman's duties in rigging loads, including training and certification, identifiable attire, and government checks on lifting gear with SWL and expiry before securing and lifting.

The signalman communicates with the lifting operator, is identifiable in line of sight, signals the lift when the load is secured, and is trained and certified by an approved institution.

Explore the hook, inner boom, outer boom, and telescopic boom, and how extending them stabilizes the vehicle during lifting operations.

Learn how to use lorry crane controls with a remote or attached controller, including six-button control for outrigger in/out, slewing left/right, inner and outer boom movements, and extension.

Assess ground condition to ensure it can handle the lorry crane load and keep everyone safe; avoid deploying outriggers on grassy areas, manholes, drains, trenches, or soft inclined ground.

Study the Powderfinger catalog of PK 4002 high performance product, detailing HPC, outriggers, and 25.2 m outreach with maximum load around 14,060 680 g.

Perform a test lift to verify stability, align the hook with the center of gravity, follow universal hand signals, and conduct risk assessment with a permit to work.

Compare web and chain and wire rope slings in construction, detailing nylon or polyester web slings, alloy steel chain slings, and steel wire rope slings with their advantages and disadvantages.

Inspect web, chain, and wire slings before lifting, checking for damage, ID tags, safe working load, expiry date, and overhead lifting suitability per grade.

Explore the three main sling hitch configurations—vertical, choker, and basket—showing how the sling eyes, wrap around the load, and hook attachments vary across single to quadruple configurations.

Explore how sling angle affects tension and safe working load using a 150 cg load on two slings, with multipliers for 90°, 60°, and 30°.

Identify the center of gravity and determine its position under the hook by analyzing sling tension readings and the distance between slings for both symmetrical and asymmetrical loads.

Estimate the load by calculating mass from volume and density, comparing concrete and wood using densities such as 2400 and 1000.

Learn to read a crane load chart, determine total capacity at a given height and line, and account for lifting gear and hook in the load calculation.

Carry the required certification document for lifting gear and lifting equipment. Check the safe working load, expiry dates, and authorised inspections to demonstrate compliance with rules and regulations.

Examine a sample lifting operation with a 500 kg load using a lorry crane, detailing roles, a toolbox briefing, gear checks, area barricades, and center-of-gravity considerations.