General description
This course provides standardized criteria to evaluate
and correct structural, drive machinery and hoist
problems on portal cranes. Participants also learn how
to set up comprehensive preventive maintenance
programs. A plant tour of a crane gearing and parts
manufacturing plant is included.
Course objectives
- Learn to isolate causes of abnormal tracking
- Determine causes of abnormal component wear
- Learn component replacement criteria
- Learn replacement and adjustment procedures
- Determine needed preventative maintenance items and intervals
Course outline
Brakes
- Mechanical Load Brakes
- Electrical Load Brakes
- Holding Brakes
Gantry & Trolley Drives Systems
- Gear Boxes
- Gear Wear
- Bearings
- Couplings
Hoist Machinery
- Wire Ropes
- Drums
- Grapples
- Reeving
Preventative Maintenance
- Lubrication Charts
- Preventative Maintenance
Crane Tracking
- Results of Improper Tracking
- Runway Tolerances
Runways and Wheels
- Runway Alignment
- Rail Systems & Rail Welding
- End Stops
- Wheel Features
- Trolley Wheel Tracking
- Wheel Removal & Shimming Wheels
- Equalizing & Truck Pins
Introduction – Safety
- Shut down Conditions
- Service classifications & Type of Portal Cranes
- Major Crane Components
Crane Structure
- Girders
- Fixed Leg
- Hinged Leg
- Gantries
- Gantry Equalizer Trucks
- Trolley
- Cab Supports
- Trolley Wheel Replacement & Alignment