What safety requirements should the parts of a double beam crane meet?
Vohoboo is here today to talk to you about some requirements for the safety of double beam cranes. Let us talk about the details, that is, start from the various parts of the double beam crane to share with you, let everyone from the usual use of the double beam crane. Pay attention to the details of the parts.
For double-girder cranes, the opening is less than 15% of the original size, and the torsional deformation is less than 10%; the wear of the hook bushing is less than 50% of the original size, and the wear of the hook mandrel is less than 5%, without flaking, burrs, and welding repair. There are no obvious defects on the hook hanger and pulley. The amount of wire wear and corrosion on the surface of the wire rope is less than 40% of the diameter of the wire. Broken wires are less than 10% of the total number of wires in a twist distance. There are no breaks, no obvious thinning, no core detachment, dead angle twisting, extrusion deformation. , Annealing, burn-out phenomenon. The ends of the steel wire rope are connected and the clamps, pressure plates, and cymbals are connected intact, without looseness, no less than two pressure plates, and no less than three clamps.
The drum has no cracks, no looseness in connection and fixing; the wall wear is less than 20% of the original wall thickness; the safety coil is no less than 2 turns, and the diameter ratio of the drum to the wire rope meets the requirements. The balance wheel is fixed intact, and the wire rope should meet the requirements. The brake has no cracks, no looseness, no serious wear, and the brake gap is of equal size on both sides, with sufficient braking force, and the brake belt wear is less than 50% of the original thickness.
