I. Characteristics of lift accidents
1. There are more personal injury accidents in lift accidents, and the proportion of casualties among lift operators and maintenance workers is large.
2. The accident rate of the lift door system is higher, because every running process of the lift has to go through the process of opening the door twice and closing the door twice, so that the door locks work frequently and the aging speed is fast, over time. Cause the door lock mechanical or electrical protection device action is unreliable.
Second, the causes of lift accidents
1. Elevator maintenance unit or personnel did not strictly implement the “safety-oriented, pre-inspection and pre-maintenance, planned maintenance” principle.
2. The main reason for the accidents of lift door system is that the door locks work frequently and age fast, which can easily cause unreliable action of the mechanical or electrical protection devices of the door locks.
3. The accident of rushing to the top or squatting at the bottom is generally due to the failure of the brake of the lift, the brake is a very important part of the lift, if the brake fails or has hidden danger, then the lift will be in a state of out of control.
4. Other accidents are mainly caused by the failure or unreliability of individual devices.
Emergency measures for lift accidents
1. When the lift stops suddenly due to interruption of power supply or failure of the lift, and passengers are trapped in the lift car, they should ask for help through the alarm bell, intercom system, mobile phone or the prompts in the lift car, and should not act without authorisation, so as to avoid accidents such as “shearing” and “falling down the well”. Do not act without authorisation to avoid accidents such as “shearing” and “falling down the shaft”.
2. In order to rescue the trapped passengers, should be maintenance personnel or under the guidance of professionals to disc car release operation. Pan car should be satin slow, especially when the car is lightly loaded state up the pan car, to prevent the counterweight focus caused by skidding. When the gearless traction machine for high-speed lift disc car, should be used “gradually type”, step by step to release the brake, in order to prevent the lift out of control.