Poor management professional quality, strong sense of responsibility, not able to accurately identify the cause of the accident, failed to timely troubleshooting, luck, to delaying tactics, this style, in the engine management is very dangerous.

Safety devices is to protect the safe operation of the auxiliary machine God, failure should be immediately removed, or simply ignore the fault removal, the machine work long hours under the unsecured situation is very safe.

To prevent such accidents, the situation should be checked regularly engaging coupling can be carried out simultaneously with the dismantling debugger governor, check the drive shaft from the first governor removed, along with the sleeve together clean, magnifying glass on both spur observation and macroscopic examination with the eye or with, to see if there is a crack, fracture, fatigue deformation and other defects in the Soviet Union, then, Zibo electric drum to a drive shaft inserted in the sleeve, do not pay attention to the depth of insertion beyond its normal working depth, the relative rotation between the two, it can determine its meshing.

Maintenance of key components should pay attention to, such a failure would cause accidents like sleeve joint parts replacement should be strict quality control, professional manufacturers try to order more assured quality, life is relatively long, checking found Ningxia elevator maintenance deputy machine failure sleeve manufacturing process crude unbearable, the drive pin hole to one side, it is clear that the material, processing, heat treatment processes are unable to meet the design requirements, greatly shorten the service life.

Deputy machine occurs coaster, its moving parts severe over mechanical load, so once coaster accident, be sure to open the crankcase, to conduct a comprehensive inspection of moving parts, focusing on inspection screw rod, big end bearings and main bearings, in addition, Speed ??severe vibration occurs when the body, it can lead to foot loose screws, therefore, it should do a comprehensive inspection.