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　　In the hook work, inspection and maintenance are two very important steps. Carry out daily inspection and maintenance of hooks and check and deal with some hidden dangers in advance. This is not only responsible for the progress of the project, but also for the lives and property of the construction personnel.

　　1. Test content

　　The hook hook body is inspected at least once a year, and coloring flaw detection, magnetic powder flaw detection, ultrasonic flaw detection or X-ray flaw detection, etc. Check whether the hook is deformed, locally cold deformation, claw extrusion, cracks, wear, and rust. Lock the hook nut joint.

　　Deformation: If the hook claw is more than 10% larger than the original size, the hook must be replaced. Original dimensions are recorded on the hook. Measure them one by one.

　　Correct: The thread and the operating shaft must be checked for corrosion and wear. To do this, the hook nut on the shaft must be loosened.

　　2. Daily inspection and maintenance include the following contents:

　　2. Daily inspection and maintenance include the following contents:

　　1. Wipe the main hook clean;

　　2. Lubricate the pulley, the rotating part and other parts with butter nozzles;

　　3. Check all bolts and screws to ensure that all the opening pins are complete and the opening is opened;

　　4. Check whether the pulley wheel groove and rim are worn uniformly, whether the wire rope and the wheel groove are matched, and whether the pulley is loose or shaking;

　　5. 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, you need to check whether the bearings and bushings are damaged or insufficient lubricating;

　　6. Check the overload and damage of the main hook;

　7. Check the side plate elongation, hole elongation, bolt bending or elongation, cracks, etc.;

　7. Check the side plate elongation, hole elongation, bolt bending or elongation, cracks, etc.;

　　8. Check the anti-decoupling device.

　　In the hook work, inspection and maintenance are two very important steps. Carry out daily inspection and maintenance of hooks and check and deal with some hidden dangers in advance. This is not only responsible for the progress of the project, but also for the lives and property of the construction personnel.

　　1. Test content

　　The hook hook body is inspected at least once a year, and coloring flaw detection, magnetic powder flaw detection, ultrasonic flaw detection or X-ray flaw detection, etc. Check whether the hook is deformed, locally cold deformation, claw extrusion, cracks, wear, and rust. Lock the hook nut joint.

　　Deformation: If the hook claw is more than 10% larger than the original size, the hook must be replaced. Original dimensions are recorded on the hook. Measure them one by one.

　　Correct: The thread and the operating shaft must be checked for corrosion and wear. To do this, the hook nut on the shaft must be loosened.

　　2. Daily inspection and maintenance include the following contents:

　　2. Daily inspection and maintenance include the following contents:

　　1. Wipe the main hook clean;

　　2. Lubricate the pulley, the rotating part and other parts with butter nozzles;

　　3. Check all bolts and screws to ensure that all the opening pins are complete and the opening is opened;

　　4. Check whether the pulley wheel groove and rim are worn uniformly, whether the wire rope and the wheel groove are matched, and whether the pulley is loose or shaking;

　　5. 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, you need to check whether the bearings and bushings are damaged or insufficient lubricating;

　　6. Check the overload and damage of the main hook;

　7. Check the side plate elongation, hole elongation, bolt bending or elongation, cracks, etc.;

　7. Check the side plate elongation, hole elongation, bolt bending or elongation, cracks, etc.;

　　8. Check the anti-decoupling device.