Elevator has been in people's life for 150 years. The 1.5 century is the history of the groundless talk, turn the world upside down changes, constant lift is to enhance the quality of human life commitment.

In 1854, at the World Expo in New York, Crystal Palace, Americans Elisha Graves Otis first showed the world his invention. He stood in the elevator filled with goods platform, command assistant will pull the platform to the audience can see the height, then send a signal to the assistant with the ax and cut the pulling cable for elevator. Surprisingly, the elevator did not crash, but firmly fixed play a role in the elevator safety device of air - Mr. Otis invented. "Everything is safe, gentlemen." The people standing in the elevator on the platform to watch Mr. Otis waved around. No one would have thought that this was the first safety elevator in human history.

Human use of the lifting tool for the transport of goods, personnel's history is very long. As early as the 2600 BC, when the Egyptians in the construction of Pyramid, the use of the most original lifting system, the basic principle of this system is still no change: that is, a balance of the decline in the same time, the load platform. In the early stage of the lifting tool, manpower is the power. In 1203, in a monastery on the French coast, a crane was installed as a driving force, and this was the end of the history of the use of manpower to carry heavy loads. British scientist Watt invented the steam engine, the crane device to start using steam as the driving force. Immediately after, William Thompson developed a hydraulic driven elevator, hydraulic medium is water. On the basis of these lifts, the generation after generation of innovative engineers are constantly improving the technology of the elevator. However, a key security issue has not been solved, it was once the elevator pulled cable is broken, the load platform will crash.

Mr. Otis invented the completely rewritten the history of human use lifting tools. Since then, taking the elevator is no longer a "game of the brave", the elevator is widely used in the world. In December 1889, the United States Otis Elevator Co made a real lift, it uses the DC motor as the power, through the worm gear reducer to drive the rope winding drum, suspension and lift the car. In 1892, the United States Otis company began to use the button control devices to replace the traditional control way to pull the rope in the car, for handling modern precedent.

Life continues, science and technology is developing, the elevator is also in progress. 150 years, lift material from black and white to color, style from vertical to oblique type, the manipulation of control is a new step by step, the handle switch, button control, signal control, set selection control, man-machine conversation and so on, elevator also appeared in parallel control, intelligent control group; doubledeck lift show save well space, increase the transport capacity advantage; transmission type automatic escalator pavement appeared greatly saves the time of different shapes - pedestrian; fan, triangle, diamond, half round, half circle sightseeing elevator makes the passenger's sight is no longer closed. Now, in the United States Otis company as the representative of the world famous elevator company of the tubs, still in development of new products continue to lift, and constantly improve the repair and maintenance service system. FM gating, intelligent remote monitoring, energy saving, low noise, host control cabinet, durable composite strip environmental protection -- a leisurely Jina model in the field of human lift machinery and electronic and optics of the latest scientific research results to come out, so the scattering of cold building humanistic brilliance, people's life becomes more beautiful.

Chinese the first elevator in Shanghai, was installed by Otis company in 1901. In 1932 by the American Otis installed in the elevator of Tianjin Li Shunde hotel is still safe in operation. In 1951, the CPC Central Committee proposed to lift the installation of a self made in China in the Tiananmen, Tianjin motor factory with the birthday from Rong Ren, after four months have succeeded in carrying out an assignment, successfully completed the task. After the third Plenary Session of the 11th CPC Central Committee, bathed in the spring breeze of reform and opening up, China's elevator industry has entered a period of rapid development. Nowadays, in any city in our country, the elevator is widely used. Elevator has brought convenience to people's life, but also provides a powerful guarantee for the accelerated development of China's modernization drive.