8 Features Behind Modern Elevators Safety


Nowadays, elevators safety is a necessity as they make multi-story buildings far more accessible than before and upper floors easier to reach within seconds. They also efficiently move large numbers of people at the same time.

However, some people think that elevators are dangerous and are afraid of the elevator car falling or being stuck in there for a long time. This fear makes many people question if elevators are safe or not. The answer is very simple, elevators are very safe.

Why are elevators safe?

Today elevators adhere to strict safety codes and regulations to ensure safety and for proper ridership. Unlike the early versions of elevators that were far from being safe and caused many injuries and even deaths, modern elevator manufacturers developed multiple safety features to prevent accidents and even allow the elevator to travel a higher distance without compromising passenger safety. In Senwan, all our elevators are built with the latest safety features to not compromise the safety of riders.

What are the elevators’ Safety Features?

Safety features help prevent any incident while using the elevator and eliminate especially the risk of free-falling.

These features include:

1- Overspeed Governor:

Overspeed governor: The Overspeed governor or the speed limiter is one of the most crucial elevator’s safety mechanisms. The device measures and regulates the speed of the elevator, and it’s connected to the cabin via a steel cable. In case the elevator exceeds its rated speed (usually higher than 10% of the maximum rated speed), the Overspeed governor cuts power to the motor, which will make the motor brake slow down the motor shaft. However, if the elevator car continues to increase in speed, or all ropes are cut and the cabin enters free fall, a tripping assembly is triggered by the flyweights. The tripping assembly actuates a mechanism to stop the governor rope. Braking of the governor rope causes the safeties to be engaged and thereby stop the car.

2- Overload Sensor:

Every elevator has a rated weight capacity that it must not exceed to ensure both the safety of the passengers and the elevator’s longevity. The overload sensors are installed to ensure that the elevator does not carry more than its rated capacity. These sensors measure the weight of all the passengers on board, and if the weight exceeds the limit, an alarm is triggered and the elevator will not operate until the load is decreased.

3- Photocell Sensors:

These sensors are located between the cabin door and the landing doors, which creates a light curtain, so when a passenger crosses the light curtain the sensors send a signal to the doors to open. Photocell sensors help avoid the door closing on the passengers as they enter the elevator. These sensors are an extra safety feature because the door panels retract when faced with enough resistance.

4- Door Lock Safety Switches:

The switches ensure that the elevator will not move as long as one of its doors remains open or not fully closed. This safety feature makes sure that the elevator does not travel until all passengers have entered or exited the cabin and that the doors are fully closed, to avoid any possible injuries in case the door was opened while the elevator is traveling.

5- Ceiling Fan:

The Ceiling Fan provides ventilation to the cabin to renew the air in the cabin. Normally natural ventilation is required in all elevators, but the fan acts more as a reassurance to panicked passengers when the elevator carries multiple passengers and there is a malfunction.

6- Buffers:

The buffers are safety devices that are located under the cabin and counterweight. These devices are responsible to stop a descending car from going beyond its normal limit to softening and absorbing the shock and force when the elevator free falls from a distance too small for the Overspeed governor to engage. Buffers help protect both the passengers and the elevator.

7- Limit Switch:

This is a very important safety feature, the limit switch ensures that the elevator does not travel further than the desired range, therefore, it helps avoid the possibility of it crashing into the roof or floor or crashing into any mechanisms at the top or bottom of the shaft. The limit switch is also designed to protect any technicians performing the elevator’s maintenance.

8- UPS or ARD Devices:

When there is a power cut or failure during the elevator travel, these devices provide the elevator with enough electrical power to reach the closest floor and open the doors for the passengers to evacuate. These devices operate using batteries, so you need to make sure that these batteries are tested regularly and are replaced when they are no longer operational.

Are the Safety features enough?

Safety features are indeed important, but The most important safety measure is proper conduct from the passengers. There are some guidelines to properly use elevators, and instructions to follow in case of stalled elevators, and the most important one is to remain calm, contact emergency services and wait to be rescued because inside the cabin is the safest part of the elevator. To ensure further passenger safety, Senwan recommends making sure that the elevator is properly installed and maintained. Safety is a top priority for Senwan, we have the highest standards of safety and follow strict safety policies to not endanger the users and the technicians. We offer top quality and modern elevators and also effective and detailed maintenance to improve the usage of the safe elevator. 

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