Under what circumstances does the elevator adopt an unclosed shaft? What are the requirements?

In the case that there is no need to use a shaft to prevent the flame from spreading in case of fire, such as observation deck, shaft and sightseeing elevator connected with other buildings, the shaft does not need to be completely closed, but it should provide:

Where people can normally approach the elevator, the height of the fence should be enough to prevent people from:

1 Injured by elevator moving parts;

2. Interfere with the safe operation of the elevator directly or by holding objects and elevator equipment in the hoistway.

The measured height of the landing door is not less than 3.50 meters;

The rest of the measurement, when the horizontal distance between the retaining wall and the elevator moving parts is the minimum allowable value of 0.50m, the height should not be less than 2.50 m; If the horizontal distance is greater than 0.50m, the height can decrease with the increase of distance; When the distance is equal to 2.0m, the height can be reduced to the minimum value 1. 10m.

The wall should be non-porous;

The maximum distance between floors, stairs or platform edges is 0. 15m.

Measures should be taken to prevent other devices from interfering with the operation of elevators.

For open-air elevators, special protective measures should be taken, for example, a wall-attached ladder installed outside the eye building.

Note: Only under sufficient oven environment or location conditions are elevators allowed to be installed in partially closed lanes.