The Necessity of Comprehensive Overhaul of Double Girder Overhead Crane

The comprehensive overhaul of double girder overhead crane is a complex task, which usually includes the following:

Structural Inspection and Repair

Main beam and end beam: Check whether the main beam and end beam of double girder eot crane have deformation, cracks or corrosion, and make necessary repairs or replacements.

Tracks and running wheels: Check whether its tracks are worn or deformed, and adjust or replace worn running wheels.

Connectors: Check the connecting parts of double girder eot crane, such as bolts, welds, etc., to ensure that they are fastened reliably, and repair cracked or loose parts.

Maintenance of Mechanical Parts

Lifting mechanism: Check whether its drum, wire rope, pulley, etc. are worn or aged, and replace them if necessary.

Transmission system: Check the wear of transmission parts such as gears, bearings, couplings, etc., and lubricate or replace damaged parts.

Braking system: Check whether the brake is working properly and whether the brake belt or brake pad needs to be adjusted or replaced.

Overhaul of Electrical System

Motor and control system: Check whether the motor, contactor, controller, etc. are faulty or aged, and repair or replace faulty electrical components.

Cables and wires: Check whether the cables and wires are worn or aged to ensure the safety and reliability of the electrical system.

Safety switches and limit devices: Check the double girder bridge crane limit switches, emergency stop buttons and other safety devices to ensure that they can work properly.

Hydraulic and Lubrication Systems

Hydraulic devices: Check whether the hydraulic cylinders, oil pumps, valves, etc. of the hydraulic system have oil leakage or insufficient pressure, and repair or replace them if necessary.

Lubrication system: Fully lubricate all moving parts, check whether the lubricating oil has deteriorated, and replace the lubricating oil in time.

Safety Performance Testing

Load test: Perform rated load and overload tests on the double girder bridge crane to ensure that it can operate normally and remain stable under the maximum load.

Safety inspection: Comprehensively check all types of safety devices of the crane to ensure that it can work effectively in an emergency.

The maintenance of double girder overhead crane is generally to restore the equipment to its best operating state, extend its service life, and ensure the safety and efficiency of operation. This work usually requires professionals to ensure that the repaired equipment meets the relevant safety standards.