Double Girder Overhead Crane

Double Girder Overhead Crane

Double beam crane is one of the important machinery of lifting equipment, which is widely used. What safety requirements must be met in order to ensure the safe operation of the crane?
First, configure some safety devices to ensure safety.
Second, all parts and components should meet safety requirements.
The opening of double beam crane shall be increased by less than 15% of the original size, and the change deformation shall be less than 10%; The wear of plate hook bushing is less than 50% of the original size, and the wear of plate hook mandrel is less than 5%, without peeling, burr and welding repair. The hook hanger and pulley have no significant defects. The wear and corrosion of the steel wire on the surface of the steel wire rope is less than 40% of the diameter of the steel wire, and the broken wire is less than 10% of the total number of wires within a lay distance. There is no broken end, no significant thinning, no core prolapse, dead corner twisting, extrusion deformation, annealing, burning loss. The end connection of the steel wire rope and the connection of the fixed clips, pressing plates and wedge blocks are free of defects and looseness. There are no less than 2 pressing plates and no less than 3 clips. The drum shall be free of cracks, and the connection and fixation shall be free of looseness; The wear of the cylinder wall is less than 20% of the original wall thickness; The safety coil shall not be less than 2 turns, and the diameter share of the drum and the steel wire rope shall meet the requirements. The balance wheel is fixed without defect, and the steel wire rope should meet the requirements. The brake shall be free of cracks, looseness and severe wear. The two sides of the brake clearance shall be flat and the size shall be appropriate. There shall be sufficient braking force. The wear of the brake belt shall be less than 50% of the original thickness
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