Gantry Crane (Ship building)
10. Tracing data and leaving factory data of Gantry Crane (Ship building)
● Contract, Evaluation Documents, Drawing, Production Instructions, Installation Scheme, Material Quality Specification, Product Quality Checking Sheet, Welded Seam Detection Report, Quality Certificate of Purchased Parts.
● Appearance file: Instruction, Installation scheme, Quality Certificate, Checking and Acceptance Report.
11. The installation method and steps of Gantry Crane (Ship building)
The gantry crane which belongs to the large-scale equipment, requires high safety and easy to cause heavy casualties must be installed by professional staff or guided by professional. The basic procedure is as following:
● Install the rail
● Assemble the crane structure
● Choose the lifting equipment according to the part weight
● Ground assembly
● Lifting the support legs
● Assemble the main girder in the ground
● Lifting the main girder
● Install the end crossbeam
● Lifting the trolley mechanism
● Assembly the other parts
● Carry the preliminary test
12. Checking methods after installation of Gantry Crane (Ship building)
After assembly, the geometry dimension, perpendicularity, levelness and deflection must be checked in the following ways:
● The wheels span deviation: S<10mm
● The main girder deflection: AF=(0.9/1000~1.4/1000)
● The diagonal difference of main girder:(D1-D2)≤5mm
● The side curvature of main girder: AFP≤S/1200
● The trolleys’ gauge difference: Both sides: ±2mm Midpoint: S≤19.5mm
● Adjust the wheels (Parallelism, perpendicularity, apposition)