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Why Can't the Distance Between the Two Lift Landing Door Sills Exceed 11 Meters?

Why can't the distance between the two lift landing door sills exceed 11 meters? Once exceeded, hoistway safety doors or car safety doors need to be installed!


The function of the hoistway safety door or car safety door is that when the elevator fails and the car stops between two landings, they can be used to rescue the passengers trapped in the car.


Once the elevator breaks down and stops between the two floors, if there is no other passage, rescue can only be carried out through the elevator landing door or the hoistway safety door. For example, the distance between two adjacent door sills is greater than 11m, and the car stops between the two sills due to a fault, which will cause the car top to be farther away from the upper sill.


At this time, whether it is using the method of turning the car or using a ladder to rescue passengers from the top of the car, it is very easy to cause accidents, which is not conducive to the operation of rescuers and the handling of emergencies. Therefore, when the distance between two adjacent elevator door sills exceeds 11m, a hoistway safety door is required to ensure the safety of rescue activities on the elevator that runs frequently. Therefore, there is no need to install a hoistway safety door in this case.

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