1. Mechanical Braking & Support Systems
1.Multiple Hoisting Ropes:
Elevators are suspended by multiple steel cables, where just a single cable is typically strong enough to hold the fully loaded car.
2.Overspeed Governors & Safety Gear:
If the elevator descends too quickly, a mechanical governor trips and drives heavy metal wedges into the steel guide rails to halt the cabin smoothly using pure physics.
3.Hydraulic Buffers:
Positioned at the bottom of the elevator shaft, these heavy-duty shock absorbers are designed to cushion the car as a final safety measure.
2. Door & Motion Safety Systems
ight Curtains & Safety Edges: A series of infrared beams cross the doorway to detect obstructions. If the light beams are broken, the doors immediately reopen.
Door Interlocks: Elevators are engineered with mechanical and electrical interlocks that prevent the car from moving unless the doors are completely closed and locked.
Overload Sensors: Weight sensors continuously monitor the cabin load and will halt the elevator, preventing it from departing if it exceeds its rated capacity.
3. Emergency & Backup Features
1.Automatic Rescue Device (ARD):
In the event of a sudden power outage, backup batteries activate to safely drive the elevator to the nearest floor and open the doors, preventing entrapment.
2.Two-Way Communication:
Modern elevators require emergency intercoms or two-way emergency phones to connect trapped passengers directly with building personnel or monitoring services.
3.Firefighter's Service:
Allows emergency responders to override normal operations, recalling the car to the main floor and operating it under strict safety conditions to rescue trapped individuals or transport equipment