What issues should be paid attention to during work on the crane hook assembly?
For crane hook sets, the following key issues need to be paid attention to during work to ensure the safety and efficiency of the operation:
1. Safety inspection and confirmation
Daily inspection: Adhere to daily pre-shift inspections and conduct comprehensive and detailed inspections of the hook set, including the integrity of hooks, wire ropes, U-rings and other components. Check whether the hook safety buckle is effective, whether the wire rope is broken, whether the U-ring is loose, etc.
Performance evaluation: For hook defects that do not affect the performance, they can be properly handled before use; for defects that affect performance, the crane manager should be reported to the crane manager in a timely manner and the hook should be replaced. The threads of the hook must not be corroded, and defects are not allowed to be welded and repaired. Flaws are strictly prohibited from participating in lifting operations.
2. Hoisting process control
Trial lifting: Before formal lifting, trial lifting should be carried out, mainly to confirm that each component is under normal stress. If you encounter problems such as poor stress or component distortion, you need to put the workpiece back on the ground, solve the problem in time and replace the accessories before you can re-operate.
Safety operation: During the lifting process, if it is interrupted for some reason, safety measures must be taken and the lifting hook must not be suspended overnight. After completing the lifting operation, the operator should promptly retract the lifting hook and spreader and place it in a dry and clean position, and do maintenance and inspection work when it is not used in daily life.
3. Maintenance and maintenance of hook group
Cleaning and lubrication: Keep the main and secondary hooks clean, lubricate the pulleys (when equipped with oil nozzles), the rotating part and other parts with butter nozzles, to ensure that all bolts and screws remain in the specified tightening state, and all opening pins are complete and the openings are opened.
Regular inspection: Perform a comprehensive inspection of the hook group at least once a year, use coloring or magnetic powder method to detect surface cracks, and use ultrasonic or X-ray method to detect internal defects. No welding method shall be used to repair hooks and clamps unless the manufacturer permits it to weld using appropriate methods.
4. Special precautions
Load-bearing test: Before and after each use, be sure to check whether the hook group has cracks, severe deformation, corrosion and wear. The load bearing of the hook group is tested every year, and a weight-bearing static test must be carried out for at least 10 minutes to check whether the hook group has cracks, cracks and other residual deformations.
Anti-dehooking device: To prevent the hook from decoupling by itself, safety devices should be installed on the hook to prevent accidental decoupling to ensure that the anti-decoupling device is complete and intact, and can keep loose slings and other slings on the hook, but cannot carry additional weight.
Scrap standard: When the hook has surface cracks and notches, the opening degree is greater than 10% of the original size, the twist angle of the hook body exceeds 10°, and the actual height of the dangerous cross-section after wear is less than 95% of the basic size, the hook needs to be scrapped and must not be used.
To sum up, for crane hook sets, you need to pay attention to safety inspection and lifting during work.Process control, maintenance and maintenance, and special precautions to ensure the safety and efficiency of lifting operations.
For crane hook sets, the following key issues need to be paid attention to during work to ensure the safety and efficiency of the operation:
1. Safety inspection and confirmation
Daily inspection: Adhere to daily pre-shift inspections and conduct comprehensive and detailed inspections of the hook set, including the integrity of hooks, wire ropes, U-rings and other components. Check whether the hook safety buckle is effective, whether the wire rope is broken, whether the U-ring is loose, etc.
Performance evaluation: For hook defects that do not affect the performance, they can be properly handled before use; for defects that affect performance, the crane manager should be reported to the crane manager in a timely manner and the hook should be replaced. The threads of the hook must not be corroded, and defects are not allowed to be welded and repaired. Flaws are strictly prohibited from participating in lifting operations.
2. Hoisting process control
Trial lifting: Before formal lifting, trial lifting should be carried out, mainly to confirm that each component is under normal stress. If you encounter problems such as poor stress or component distortion, you need to put the workpiece back on the ground, solve the problem in time and replace the accessories before you can re-operate.
Safety operation: During the lifting process, if it is interrupted for some reason, safety measures must be taken and the lifting hook must not be suspended overnight. After completing the lifting operation, the operator should promptly retract the lifting hook and spreader and place it in a dry and clean position, and do maintenance and inspection work when it is not used in daily life.
3. Maintenance and maintenance of hook group
Cleaning and lubrication: Keep the main and secondary hooks clean, lubricate the pulleys (when equipped with oil nozzles), the rotating part and other parts with butter nozzles, to ensure that all bolts and screws remain in the specified tightening state, and all opening pins are complete and the openings are opened.
Regular inspection: Perform a comprehensive inspection of the hook group at least once a year, use coloring or magnetic powder method to detect surface cracks, and use ultrasonic or X-ray method to detect internal defects. No welding method shall be used to repair hooks and clamps unless the manufacturer permits it to weld using appropriate methods.
4. Special precautions
Load-bearing test: Before and after each use, be sure to check whether the hook group has cracks, severe deformation, corrosion and wear. The load bearing of the hook group is tested every year, and a weight-bearing static test must be carried out for at least 10 minutes to check whether the hook group has cracks, cracks and other residual deformations.
Anti-dehooking device: To prevent the hook from decoupling by itself, safety devices should be installed on the hook to prevent accidental decoupling to ensure that the anti-decoupling device is complete and intact, and can keep loose slings and other slings on the hook, but cannot carry additional weight.
Scrap standard: When the hook has surface cracks and notches, the opening degree is greater than 10% of the original size, the twist angle of the hook body exceeds 10°, and the actual height of the dangerous cross-section after wear is less than 95% of the basic size, the hook needs to be scrapped and must not be used.
To sum up, for crane hook sets, you need to pay attention to safety inspection and lifting during work.Process control, maintenance and maintenance, and special precautions to ensure the safety and efficiency of lifting operations.
For crane hook sets, the following key issues need to be paid attention to during work to ensure the safety and efficiency of the operation:
1. Safety inspection and confirmation
Daily inspection: Adhere to daily pre-shift inspections and conduct comprehensive and detailed inspections of the hook set, including the integrity of hooks, wire ropes, U-rings and other components. Check whether the hook safety buckle is effective, whether the wire rope is broken, whether the U-ring is loose, etc.
Performance evaluation: For hook defects that do not affect the performance, they can be properly handled before use; for defects that affect performance, the crane manager should be reported to the crane manager in a timely manner and the hook should be replaced. The threads of the hook must not be corroded, and defects are not allowed to be welded and repaired. Flaws are strictly prohibited from participating in lifting operations.
2. Hoisting process control
Trial lifting: Before formal lifting, trial lifting should be carried out, mainly to confirm that each component is under normal stress. If you encounter problems such as poor stress or component distortion, you need to put the workpiece back on the ground, solve the problem in time and replace the accessories before you can re-operate.
Safety operation: During the lifting process, if it is interrupted for some reason, safety measures must be taken and the lifting hook must not be suspended overnight. After completing the lifting operation, the operator should promptly retract the lifting hook and spreader and place it in a dry and clean position, and do maintenance and inspection work when it is not used in daily life.
3. Maintenance and maintenance of hook group
Cleaning and lubrication: Keep the main and secondary hooks clean, lubricate the pulleys (when equipped with oil nozzles), the rotating part and other parts with butter nozzles, to ensure that all bolts and screws remain in the specified tightening state, and all opening pins are complete and the openings are opened.
Regular inspection: Perform a comprehensive inspection of the hook group at least once a year, use coloring or magnetic powder method to detect surface cracks, and use ultrasonic or X-ray method to detect internal defects. No welding method shall be used to repair hooks and clamps unless the manufacturer permits it to weld using appropriate methods.
4. Special precautions
Load-bearing test: Before and after each use, be sure to check whether the hook group has cracks, severe deformation, corrosion and wear. The load bearing of the hook group is tested every year, and a weight-bearing static test must be carried out for at least 10 minutes to check whether the hook group has cracks, cracks and other residual deformations.
Anti-dehooking device: To prevent the hook from decoupling by itself, safety devices should be installed on the hook to prevent accidental decoupling to ensure that the anti-decoupling device is complete and intact, and can keep loose slings and other slings on the hook, but cannot carry additional weight.
Scrap standard: When the hook has surface cracks and notches, the opening degree is greater than 10% of the original size, the twist angle of the hook body exceeds 10°, and the actual height of the dangerous cross-section after wear is less than 95% of the basic size, the hook needs to be scrapped and must not be used.
To sum up, for crane hook sets, you need to pay attention to safety inspection and lifting during work.Process control, maintenance and maintenance, and special precautions to ensure the safety and efficiency of lifting operations.
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