If you are one of the people who deal with elevators on a daily basis, you must know the safety circuits in elevators, because they are among the most important things that must be present in the elevator and be implemented properly and correctly, in order to provide safety and security for passengers when using the elevator to go up or down. .
Elevators are good inventions that facilitated the process of moving between floors in high-rise buildings, and the elevators were not limited to residential buildings only,
but elevators are found in shops and large marketing malls, in order to transport customers,
in addition to their presence in large companies to transport employees and customers.
Safety circuits in elevators
Safety circuits in elevators operate in a tight system through which various purposes are achieved,
such as:
- The elevator does not start operating until complete security is verified to preserve the safety of individuals. Safety is verified by tightly closing the doors and kaolin powder.
- The speed of the elevator is controlled and stopped when the specified speed is exceeded.
- Respond to movement requests of individuals to move them between floors.
- Full control of closing and opening the elevator door to avoid any problem.
What are the safety circuits for elevators?
Safety circuits in elevators consist of several tools that work together
in order to achieve complete safety and complete safety for passengers.
These tools include the following:
the fork
The fork is the department specialized in preventing the movement of the elevator except after making sure that all the elevator doors are completely closed, which preserves the safety of passengers,
and avoids the fall of any person from the elevator.
calon
The lock works to prevent any of the elevator doors from being opened while the cabin is moving,
and it also works to open the door at which the cabin is standing only, in order to preserve the safety of the individuals waiting for the elevator to use it, whether going up or down.
August Limit
The Ab Limit is considered one of the most important tools in the safety circles in elevators,
as its work depends on preventing the elevator from going up to the last floor,
where the Ab Limit is placed on the last floor to prevent the elevator from going up more than that.
Dawn Limit
It is a device that is placed on the last floor to prevent the elevator from exceeding this floor,
and it dwarfs the same work as the App Limit device, but the first is placed at the bottom
and the last is placed on the highest floor, and they work together
to determine the path for the elevator and prevent this path from being crossed.
kill switch
One of the most important safety circuit tools in elevators is the stop switch,
as this switch is located inside the elevator cabin, and this switch is used in emergency cases only,
as it works to cut off the elevator operating circuit and stop it, so it must be used when an abnormal movement is felt, or when hearing Strange noises coming from the elevator as it moves.
speed regulator
The speed regulator is called a parachute, and it works to protect the elevator from a sudden fall in the event of a wire break, or in the event of an earthquake, so the speed regulator is one of the most important safety circuit tools in elevators that must be taken care of.
The most important causes of elevator failures
There are some reasons that lead to elevator breakdowns that must be identified,
and how to deal with them in order to achieve complete safety and security for passengers, as follows:
The bundles of ropes used in the elevator are damaged
With the continuous use of the elevator, erosion occurs on the edges of the ropes that are used in the process of ascending and descending the elevator. Its condition is constantly, in order to avoid a malfunction of the elevator, and the condition of the ropes can be confirmed by the use of some advanced magnetic tools.
Malfunction of power supply sources
Elevators need a large supply of energy in order to carry out their work, so when any defect occurs in the sources that supply the elevator with energy, it leads to the elevator’s failure to work, so the complete safety of the elevator’s energy sources must be ensured from time to time, in order to avoid sudden breakdowns in the elevator. the elevator.
The safety of energy sources is ensured by the use of infrared thermal imaging in order to scan the quality of energy, identify weaknesses in it, and work very quickly to solve these problems.
Process lubrication and oil
One of the important things that is done continuously is the analysis of oils used in the process of lubricating elevators, and this analysis is done in order to discover the presence of contamination or corrosion in the engine or not, as corrosion produces small residues of metallic materials, and when there is a high percentage of bronze in the lubricating oil, This indicates corrosion of the elevator crown, and when the aluminum content of the hydraulic elevator tank is high, corrosion of the pump casing.
The process of lubricating the elevator gears is one of the most important operations that must be taken care of in order to maintain the efficiency of the elevator’s work. Therefore, continuous analysis of the oil used in the elevator’s lubrication must be carried out in order to ensure the safety of the various parts that make up the elevator.
Reasons for elevator failure
There are some non-technical reasons that can cause the elevator to malfunction, including:
- The interruption of the electrical source that supplies the elevator with the electricity needed
for its work, which leads to the elevator stopping work until the electric current is restored again. - One of the fuses in the elevator is damaged.
- Damage to the elevator door.
- Repeatedly pressing the elevator buttons located in the inner cabin during the elevator movement, this leads to overload separation due to the change in elevator speed.
- Elevator imbalance resulting from damage to the plastic cladding of the elevator cabin.
- The large accumulation of dust on the elevator control panel, due to the control room door not being closed or leaving any port that allows dust-laden air to enter it
Read more: Common elevator problems and how to deal with them
How to avoid elevator malfunctions
One of the very important things that all elevator users should know, especially when we are talking about safety circuits in elevators, are the tips and instructions that must be followed when riding the elevator to avoid the risks that could be caused by the elevator malfunction, which are as follows:
- The elevator must not be used in emergency situations or in the event of a fire,
in order to prevent you from being trapped inside the elevator. - The elevator must not be used by persons under the age of 14 without facilities,
in order to maintain their safety. - The number of people must not be loaded more than the permissible number
when riding the elevator, in order to avoid sudden breakdown due to overloading. - The elevator instructions board must be read before using it, to learn about everything related
to the elevator, and to avoid doing some things that cause it to malfunction.
After getting acquainted with the safety circuits in the elevators, it is important to know that the elevators are manufactured by experts specialized in implementing security systems that guarantee complete safety when using the elevator, and provide all means of comfort and safety for all individuals.