Replacement drum hazard identification

1)Hazard source: no empty belt before stopping.
Description of risks and consequences: It is easy to start or cause a broken belt accident.
Pre-control measures: Mine maintenance Before the electrician stops, it must be checked to ensure that the coal on the belt is turned empty before it can be shut down; The mine maintenance electrician can find heavy-duty shutdown when the tear belt, the buckle is seriously damaged or the deviation is severe.

2)Hazard source: The alarm sign is not closed after the shutdown.
Description of risk and its consequences: It is easy to cause casualties caused by incorrect start of the belt.
Pre-control measures: After the mine maintenance electrician stops, the stop button and the local emergency stop button must be locked, the control power supply is cut off and the card is listed.

3)Hazard source: The splint has not been inspected.
Description of risk and its consequences: It is easy to cause belt malfunction and injury.
Pre-control measures: Before using the mine maintenance fitter, it is necessary to check whether the screw hole of the splint is enlarged, whether the bolt is slippery, and whether the splint is deformed.

4)Hazard source: The tension of the tape is too large.
Description of risk and its consequences: It is easy to cause the drum to be pulled out.
Pre-control measures: When the mine maintenance fitter is loose, it is strictly forbidden to stand around the tensioning device; The mine maintenance fitter selects the appropriate position, clamps the lower belt and fixes it on the belt frame; Mine maintenance fitter Before the loose belt inspection, confirm that there is no operator in the belt and the running part, and then release the belt; The mine maintenance fitter should check whether the tensioning device is completely loose after loosening the tension and must be inspected without tension.

5)Hazard source: The manual hoist and motor used are not checked for matching and intact.
Description of risks and consequences: It is easy to cause loss of injury or equipment damage.
Pre-control measures: Mine maintenance fitter checks the integrity of the tools before use; Mine maintenance fitters check hooks, chains, axles, and chain plates before use. If there are rust, cracks, damage, and the transmission part is not flexible, it must be strictly prohibited; Mine maintenance fitters must ensure that the weight of the crane can be greater than the weight of the drum before using the manual hoist.

6)Hazard source: The tool is not used properly when removing the bolt.
Description of risk and its consequences: It is easy for construction workers to get rid of the maintenance personnel when using the wrench.
Pre-control measures: Mine maintenance fitter determines the use of qualified tools according to the size of the bolt; When the mine maintenance fitter uses the adjustable wrench, it must be evenly applied and the impact force is not available; When the mine maintenance fitter uses the adjustable wrench, the stuck Loose screws, nut gap must not exceed 1mm.

7)Hazard source: The person stands under the lifting object.
Description of risk and its consequences: It is easy to cause the old roller to fall and hurt people.
Pre-control measures: The mine maintenance fitter checks that the staff at the work site is strictly prohibited to stand around and under the hoisting drum; The mine maintenance fitter uses a sling from the side of the belt to hang the two ends of the drum shaft and pull out the old drum.

8)Hazard source: The person stands under the lifting object.
Description of risk and its consequences: It is easy to cause the new roller to fall and hurt people.
Pre-control measures: The mine maintenance fitter checks that the staff at the work site is strictly prohibited to stand around the hoisting drum; The mine maintenance fitter uses a sling from the side of the belt to hang the two ends of the drum shaft to pull the new roller; Mine The maintenance fitter installs the new roller in place and tightens the roller mounting bolts.

9)Hazard source: The bearing is not oiled.
Description of risks and consequences: Easy to cause bearing damage.
Pre-control measures: The mine maintenance fitter cleans the coal slurry of the fuel filler before oil injection, and checks whether the grease injection nozzle is broken, blocked, and the oil passage is smooth. The mine maintenance fitter must inject proper oil into the bearing.

10)Hazard source: The tension of the tape is not suitable.
Description of risks and consequences: Easy to break the belt.
Pre-control measures: When the mine maintenance fitter starts the tensioning winch to tension the belt, check and confirm that there are no people around, start the tensioning winch to tighten, when the belt reaches a certain tension, remove the entrainment device and start to tension the belt; When tightening, the two cooperate, one person operates, and one person observes the tension of the belt.

11)Hazard Source: Field tools are not cleaned.
Description of risks and consequences: Easy to cause damage to the belt.
Pre-control measures: Mine maintenance fitters must clean up the tools on site before starting the machine, confirming that all tools are fully collected and free of debris.

12)Hazard Source: Persons around the equipment were not inspected.
Description of risks and consequences: Easy to be pulled by a rotating belt.
Pre-control measures: Before the mine maintenance fitter starts, check the personnel around the belt to confirm that there is no personnel before starting.