What Is An Elevator?

How was the elevator invented?
We enjoy the convenience and speed brought to us by elevators, so who invented the elevator? I believe this is a question that many people want to know. In addition, when was the elevator invented? There must be many people who are not very clear. The inventor of the elevator was Elisha Graves Otis, who demonstrated the elevator he invented at the World Expo held in the Crystal Palace in New York in 1853.
How does the elevator work?
How many phases of electricity does the elevator have? The motor of the elevator is generally a three-phase servo motor. Of course, there are also two-phase servo motors, but this type of motor is less used, and the load capacity is not as good as the three-phase motor. Is the elevator a special equipment? Because the elevator needs a special inspection permit before operation, the elevator belongs to special equipment.
Elevator structure and principle

The elevator system is generally divided into 8 components, namely traction system, door system, weight balance system, electric traction system, guide system, car system, electrical control system and safety protection system. These systems are basically equipped with elevator guide rails, elevator controllers, elevator switches, elevator protective doors, elevator door frames, elevator call buttons and other instruments to ensure the safe use of the elevator. At the same time, it is necessary to ensure that the specifications of the elevator wire rope have passed the elevator quality inspection. This is an important part of elevator safety. If there is a problem, the elevator quality is not up to standard and may cause elevator accidents.