Precursor of elevator jacking

The precursors of elevator roof fall are abnormal phenomena such as abnormal sound, vibration and sticking.

Elevator hijacking means that the elevator suddenly crashes into the top of the elevator shaft at high speed during operation, which is extremely dangerous and leads to serious consequences. Generally speaking, there will be some abnormal phenomena before the elevator rushes to the top, such as abnormal sound, vibration, jamming and other problems during the elevator operation, or the elevator door can not be closed normally and the door opening speed is slow. If the elevator is found in the above situation, it should stop running immediately and contact professional and technical personnel for inspection and maintenance in time.

In order to ensure the safety of passengers, elevators need to be inspected and maintained by professional technicians before use, and the relevant safety operation specifications should be observed. At the same time, as passengers who use the elevator, they also need to pay attention to their own safety awareness, and don't overload or press the button indiscriminately, so as not to cause elevator failure or casualties.