Safety Inspection Items for Crane Gantry Components

1 ) Crane hook.

　　Check whether the hook’s markings and anti-disengagement devices meet the requirements, and inspect the hook for defects such as cracks or spalling. Also, verify if wear on the hook’s cross-section, increases in opening width, and torsional deformation exceed the allowable limits. Finally, examine the hook’s neck and surface for signs of fatigue deformation or cracking, as well as assess the condition of any associated pins and bushings for wear.

　　( 2 ) Steel wire rope.

　　Check whether the wire rope specifications and models match the pulley and drum as per design requirements. Verify that the wire rope clamping devices—such as pressure plates, rope clips, and wedges—at the fixed end meet the necessary standards. Also, inspect the wire rope for excessive wear, broken wires, kinks, flattening, bending, strand breaks, or corrosion.

　　( 3 ) Lifting mechanism braking system.

　　Check the brake setup, verify whether the brake type meets design specifications, and inspect the brake linkage and springs for defects such as fatigue deformation or cracks. Also, ensure that pins, axles, brake wheels, and brake friction pads are not excessively worn, and confirm that there are no oil leaks in the hydraulic braking system. Finally, verify that the brake clearance is properly adjusted and that the braking performance fully complies with requirements.

　　( 4 ) Reel.

　　Check the drum body and flange for fatigue cracks, damage, or other issues; verify whether the rope groove and drum wall wear exceed acceptable limits; ensure the drum flange height is compatible with the number of wire rope layers wound; and confirm that the guide and rope-aligning devices are functioning as required.

　　( 5 ) Crane pulley.

　　Does the pulley feature a rope-retaining groove mechanism? Are there any cracks, chipped edges, or excessive wear on the pulley groove and wheel flanges? And does the pulley rotate smoothly and freely?

　　( 6 ) Crane gearbox.

　　Check whether the gearbox emits any unusual sounds during operation, such as loud metallic friction noises, vibrations, or abnormal shell radiation. Also, verify if the shaft ends are properly sealed and if any of the mounting bolts are loose or damaged. Finally, ensure that the lubricant type, oil level, operation of the lubrication pump in vertical gearboxes, and lubrication practices for open gear drives all meet the specified requirements.

　　( 7 ) Crane wheels.

　　Are there any fatigue cracks on the wheel tread and axle, and is wear on the wheel tread and axle exceeding the specified limits? Is there any rail biting occurring during operation? If so, what are the underlying causes of this phenomenon?

　　( 8 ) Coupling.

　　Check the coupling parts for any defects, loose connections, or signs of operational impact. Also, verify whether the coupling, pins, pin holes, and buffer rubber rings show excessive wear. Finally, ensure that the coupling is properly aligned concentrically with the two components it connects.