Safety inspection of bridge cranes In order to ensure the safe operation of bridge cranes, some safety routine inspections are required during the operation of the cranes. The inspection items and main points are as follows:
(1) Lift height limiter, travel limit switch and interlocking mechanism are normal, safe and reliable.
(2) The main components meet the safety requirements: the opening increase is less than 15% of the original size, the torsional deformation is less than 10%; the wear of the plate hook sleeve is less than 50% of the original size, the wear of the plate hook spindle is less than 5%, no peel off Burrs, welding repair. Hook hangers and pulleys have no obvious defects. Steel wire rope surface wear, corrosion less than 40% of the diameter of the wire, broken wire within a pitch is less than 10% of the total number of wire, no breakage, no significant thinning, no core part out, corner twisting, extrusion deformation , annealing, burning phenomenon. The connection of the end of the steel wire rope and the fixed clamps, pressure plates and block blocks are well connected without loosening, the pressure plate is not less than 2 and the number of clamps is not less than 3. The reel has no cracks, no looseness in connection and fixation; the wall wear is less than 20% of the original wall thickness; the safety roll is not less than 2 turns, and the diameter of the reel and the wire rope meets the requirements. The balance wheel is fixed and the wire rope should meet the requirements. The brakes are free of cracks, no looseness, and no serious wear. The brake gaps are equally sized on both sides and have sufficient braking force. The brake band wear is less than 50% of the original thickness.
Through the routine safety inspection of bridge cranes, it has played a significant role in eliminating personal accidents, reducing equipment accidents, improving equipment operation rates, and reducing maintenance costs.
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