In order to ensure the safe operation of the bridge crane, some safety routine inspections are required during the operation of the crane. The inspection items and main points are as follows... The safety inspection of the bridge crane In order to ensure the safe operation of the construction hoist
, During the operation of the crane, some safety routine inspections are required. The inspection items and main points are as follows: 1. The lifting height limiter, the stroke limit switch and the interlocking mechanisms are normal, safe and reliable. 2. The main components meet the safety requirements: the opening enlargement is less than 15% of the original size, the torsional deformation is less than 10%; the wear of the plate hook bushing is less than half of the original size, the wear of the plate hook mandrel is less than 5%, no peeling, burrs , Welding repair. The hook hanger and pulley have no obvious defects. The amount of wire wear and corrosion on the surface of the wire rope is less than 40% of the diameter of the wire, and the broken wire is less than 10% of the total number of wires in a lay length. There is no broken end, no obvious thinning, no core falling out, dead corner twisting, extrusion deformation , Annealing and burning phenomenon. The clamps, pressure plates, and wedge blocks connected and fixed at the end of the steel wire rope are connected in good condition without looseness. There are no less than 2 pressure plates and no less than 3 clamps. The drum has no cracks, and the connection and fixing are not loose; the wall wear of the drum is less than 20% of the original wall thickness; the safety coil is not less than 2 turns, and the ratio of the diameter of the drum to the wire rope meets the requirements. The balance wheel is well fixed and the steel wire rope should meet the requirements. The brake has no cracks, looseness, and serious wear. The two sides of the brake gap are equal in size and have sufficient braking force. The wear of the brake band is less than half of the original thickness. Picture:
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