1. Daily inspection: Perform visual inspections of eyebolts and hooks regularly to look for any visible cracks, deformation, wear or corrosion.

2. Cleaning: Wipe the hook clean before and after use to remove dust, oil and debris to prevent corrosion and wear.

3. Lubrication: Lubricate the rotating parts of the hook and the parts with grease nipples regularly to reduce wear and ensure smooth operation.

4. Fastener inspection: Check all bolts, screws and cotter pins to ensure that they are complete and properly installed without looseness or damage.

5. Wear inspection: Check the hook claws and wheel grooves for uniform wear, confirm that the wire rope matches the wheel groove, and that the pulley is not loose or shaking.

6. Freedom of rotation: Ensure that the rotating part of the hook rotates freely and the gap cannot be too large. If it is difficult to rotate or feels stuck, check whether the bearings and sleeves are damaged or insufficiently lubricated.

7. Overload damage inspection: Check whether the main hook has signs of overload damage, whether the side plate is elongated, whether the hole diameter is elongated, whether the bolt is bent or elongated, cracked, etc.

8. Anti-unhooking device: Check whether the anti-unhooking device is intact and ensure its normal function.

9. Regular professional inspection: Perform professional inspections at least once a year, using methods such as color flaw detection, magnetic particle detection, ultrasonic flaw detection or X-ray flaw detection to detect possible internal damage.

10. Scrap standard: If the hook has the following conditions, it should be scrapped: the opening is larger than the original size, cracks, dangerous section wear reaches 10% of the original size, torsional deformation exceeds 10 degree , plate hook bushing or mandrel wear reaches 5% of the original size, welding repair or affected by high temperature, strong corrosion, etc.