Development History of the Elevator

The elevator allows people to reach to the top floor of a high-rise building conveniently. Elevator from china Elevator Supplier - fujihd.net - has been developed into the goods elevator, guest elevator and observation elevator. As a matter of fact, people had started using some original lifting tools for transporting people and goods very long time ago. In 1854, Elisha • Graves • Otis from the United States displayed his invention to people for the first time. The invention is the first safe lifter in human history. In 1889, the lifter was driven by using electricity, and it was the real elevator. The elevator uses a DC motor to provide power. In 1892, the Otis Company in the United States began to adopt a button operation unit to replace the tra-ditional manipulation method so as to modernize manipulation precedently.

In the 19th century, the DC elevator that used the Ward-Leonard D system as the driving control was created, and it had the operation perf-ormance of the elevator greatly improved. In the beginning of the 20th century, an elevator that was driven by an AC induction motor was pro-duced. Soon after that, the slot wheel drive elevator replaced the drum wheel reel drive elevator. The event built the foundation for modern long trip elevator with high safety. In the first half of 20th century, the DC speed regulation system was used in a large proportion in middle-speed elevators and high-speed elevators.

In the 1967, the thyristors were used for driving an elevator, and by that time, the AC variable voltage-speed control elevator was produced. When it was 1983, a variable velocity-frequency control elevator was created. It became the main stream product due to its characteristics of good speed regulation performance, excellent comfortableness, energy saving, etc. in 1996, an AC permanent magnet synchronous gearless traction machine driven elevator without the machine room was produced.

Today, a wide variety of elevators are available in the market. The most exciting thing is the production of the China Elevator - Safe Elevator Supplier in China. The obse-rvation elevator is a type of vertical lifter powered by an electric motor. One side or several sides of the carriage walls is made from transparent material. When the passengers are in the elevator, they can enjoy the scenery outside the elevator.