Lift the development of lift
So far, the elevator has a history of more than 150 years, during which the elevator has been in the new, the appearance of a variety of colors, from black and white to color, style from straight to oblique; technology is constantly improving: handle switch control, button control, signal control, man-machine dialogue, etc..
Now, in any city in our country, we can see the elevator figure, our life because of the application of the elevator is a lot of convenience, the acceleration of China's modernization construction is also less than the protection of it. So, the elevator is how a step by step development so far?
In fact, long ago, people began to study how to use the original vertical tool to carry goods and people, around 1100 BC, Chinese people invented the folk water facilities, complete with lifting rotary motion of the drum, lift height.
In 236 B. C., the famous mathematician, physicist, philosopher, Archimedes, was designed with a lifting device consisting of a winch and a pulley. It is the same with our ancient windlass, can lift objects, however, the driving force is human or livestock, it was quite laborious.
By nineteenth Century, the invention of the steam engine to make the driving force of the tool has a new choice, the United States and Europe began to use it as a driver. In 1845, William Thompson developed a hydraulic driven elevator, the medium is water. The history of innovation pace of elevator has never been broken, a generation of innovative spirit of the ancestors of continuous improvement of lifts, however recognized lifts can be commonly used time and again is still not out. A key problem is not the birth of elevator safety check, once the elevator rope pulled broken, the load platform will crash accident.
Until 1852, Elisha Graves Otis developed the world's first security elevator. Two years later, in 1854, at the World Expo in New York,, he first demonstrated his invention to the world.
Performances have been successful, "safe" two words left a deep impression, but also to lift the public recognition. However, Otis business not because the show hot up: in 1854, they sold only a few lifts; 1855 sold only 15 units; in 1856 it sold 27 units, and for freight.
By March 1857, a passenger elevator was installed in a New York shop, which specializes in French Porcelain and glass, which is the world's first passenger elevator. Lift is driven by steam, load 500 kg, about 12 meters per minute so that you can look at the beautiful scenery and not feel uncomfortable.
It can be seen that the elevator is in the minority, the reason is nothing less than the driving force of the suck! Power driven applications will undoubtedly improve this state. In 1889, the lift began to use electricity to drive, this is the real sense of the elevator. In the drive control technology, the elevator has experienced the DC motor drive control, AC single speed motor drive, AC two speed motor drive control. There are two kinds of AC drive control of DC motor, the control of AC voltage and variable frequency speed control, the control of variable voltage variable frequency and variable voltage and variable frequency, and the control of variable frequency speed control. DC elevator is the end of the nineteenth Century, and then appeared in twentieth Century on the AC induction motor drive of the elevator, to the upper half of twentieth Century, in the middle and high speed elevator, DC speed control system has a large proportion.
Here we focus on the power driven lift, that is, the real sense of the development of the elevator. In 1900, the electric motor drive of the elevator come out. In 1902, Schindler developed the world's first automatic elevator. This kind of elevator's conveying capacity and safety has been greatly improved. The control mode is automatic.
In 1967, people put the thyristor used in the elevator drive, AC voltage regulation and control of the elevator appeared in the control. 1983, the birth of the elevator control of variable voltage variable frequency control, compared to the previous elevator, variable voltage variable frequency conversion speed performance is good, energy saving, more comfortable, once became the mainstream of the elevator products.
In 1996, the elevator technology has carried out a reform: machineroomless elevator traction machine gear driven AC permanent magnet synchronous. This elevator energy saving, no oil pollution, the maintenance of trouble, the safety performance is high. The traction machine and the control cabinet is placed in the well, eliminating the independent room area, saving construction cost, increase the effective area of the building.
In May 2000, Schindler elevator company unveiled new products -- machineroomless elevator, synthetic fiber rope without using high strength steel wire rope core pulling car. Each traction rope from about 300 thousand strands of fine fibers, than the traditional wire rope 4 times lighter. Graphite fiber rope conductors embedded in mild wear can monitor the traction rope.
Elevator is the future development of the elevator is the highlight of the future, there should be more developers will choose the inorganic room elevator, especially the fourth generation of no room elevator.
Lift the development of lift
The escalator is a form of the elevator, the world's first real escalator in July 9, 1899 to produce success. This is an American designer and Otis company to improve production seeburger: Hardwood pedal, cascade is horizontal, moving handrail and comb plate.
In 1900, at the Paris International Expo, the escalator achieved great success, the same attention and Jesse Pellegrino design of escalator.
In April 2002, at the Fifth China International Elevator Exhibition, MITSUBISHI Motor Co., Ltd. exhibited a high speed operation of the escalator model. Because of the driving rack structure with hinged retractable, the interval of the operation can be changed, which leads to the change of the speed. Inclined section of the speed is 1.5 times the speed of the mouth and mouth, not only shorten the time of the passengers, but also improve the safety and stability of the upper and lower stairs.
In 2003, the company also released the Otis escalator model, a new escalator technology, using the Guarded pedal design: cascade pedal and apron board become coordinated operation.
In China, the first elevator was installed in 1901 in Shanghai, the United States is installed by Otis, then, Tianjin became the second city to install an elevator, in 1932, the United States Otis Elevator installation in Tianjin Li Shunde Hotel, still safe operation.
Today, the world's elevator company is still in the development and maintenance of the elevator, the elevator is also more and more rich and wonderful, all kinds of different forms, functions of modern elevator amazing: double car elevator not only saves the well road space, but also enhance the transport capacity; variable speed automatic sidewalk to save the time, without exception, all more convenient for people's life.
Now, in any city in our country, we can see the elevator figure, our life because of the application of the elevator is a lot of convenience, the acceleration of China's modernization construction is also less than the protection of it. So, the elevator is how a step by step development so far?
In fact, long ago, people began to study how to use the original vertical tool to carry goods and people, around 1100 BC, Chinese people invented the folk water facilities, complete with lifting rotary motion of the drum, lift height.
In 236 B. C., the famous mathematician, physicist, philosopher, Archimedes, was designed with a lifting device consisting of a winch and a pulley. It is the same with our ancient windlass, can lift objects, however, the driving force is human or livestock, it was quite laborious.
By nineteenth Century, the invention of the steam engine to make the driving force of the tool has a new choice, the United States and Europe began to use it as a driver. In 1845, William Thompson developed a hydraulic driven elevator, the medium is water. The history of innovation pace of elevator has never been broken, a generation of innovative spirit of the ancestors of continuous improvement of lifts, however recognized lifts can be commonly used time and again is still not out. A key problem is not the birth of elevator safety check, once the elevator rope pulled broken, the load platform will crash accident.
Until 1852, Elisha Graves Otis developed the world's first security elevator. Two years later, in 1854, at the World Expo in New York,, he first demonstrated his invention to the world.
Performances have been successful, "safe" two words left a deep impression, but also to lift the public recognition. However, Otis business not because the show hot up: in 1854, they sold only a few lifts; 1855 sold only 15 units; in 1856 it sold 27 units, and for freight.
By March 1857, a passenger elevator was installed in a New York shop, which specializes in French Porcelain and glass, which is the world's first passenger elevator. Lift is driven by steam, load 500 kg, about 12 meters per minute so that you can look at the beautiful scenery and not feel uncomfortable.
It can be seen that the elevator is in the minority, the reason is nothing less than the driving force of the suck! Power driven applications will undoubtedly improve this state. In 1889, the lift began to use electricity to drive, this is the real sense of the elevator. In the drive control technology, the elevator has experienced the DC motor drive control, AC single speed motor drive, AC two speed motor drive control. There are two kinds of AC drive control of DC motor, the control of AC voltage and variable frequency speed control, the control of variable voltage variable frequency and variable voltage and variable frequency, and the control of variable frequency speed control. DC elevator is the end of the nineteenth Century, and then appeared in twentieth Century on the AC induction motor drive of the elevator, to the upper half of twentieth Century, in the middle and high speed elevator, DC speed control system has a large proportion.
Here we focus on the power driven lift, that is, the real sense of the development of the elevator. In 1900, the electric motor drive of the elevator come out. In 1902, Schindler developed the world's first automatic elevator. This kind of elevator's conveying capacity and safety has been greatly improved. The control mode is automatic.
In 1967, people put the thyristor used in the elevator drive, AC voltage regulation and control of the elevator appeared in the control. 1983, the birth of the elevator control of variable voltage variable frequency control, compared to the previous elevator, variable voltage variable frequency conversion speed performance is good, energy saving, more comfortable, once became the mainstream of the elevator products.
In 1996, the elevator technology has carried out a reform: machineroomless elevator traction machine gear driven AC permanent magnet synchronous. This elevator energy saving, no oil pollution, the maintenance of trouble, the safety performance is high. The traction machine and the control cabinet is placed in the well, eliminating the independent room area, saving construction cost, increase the effective area of the building.
In May 2000, Schindler elevator company unveiled new products -- machineroomless elevator, synthetic fiber rope without using high strength steel wire rope core pulling car. Each traction rope from about 300 thousand strands of fine fibers, than the traditional wire rope 4 times lighter. Graphite fiber rope conductors embedded in mild wear can monitor the traction rope.
Elevator is the future development of the elevator is the highlight of the future, there should be more developers will choose the inorganic room elevator, especially the fourth generation of no room elevator.
Lift the development of lift
The escalator is a form of the elevator, the world's first real escalator in July 9, 1899 to produce success. This is an American designer and Otis company to improve production seeburger: Hardwood pedal, cascade is horizontal, moving handrail and comb plate.
In April 2002, at the Fifth China International Elevator Exhibition, MITSUBISHI Motor Co., Ltd. exhibited a high speed operation of the escalator model. Because of the driving rack structure with hinged retractable, the interval of the operation can be changed, which leads to the change of the speed. Inclined section of the speed is 1.5 times the speed of the mouth and mouth, not only shorten the time of the passengers, but also improve the safety and stability of the upper and lower stairs.
In 2003, the company also released the Otis escalator model, a new escalator technology, using the Guarded pedal design: cascade pedal and apron board become coordinated operation.
In China, the first elevator was installed in 1901 in Shanghai, the United States is installed by Otis, then, Tianjin became the second city to install an elevator, in 1932, the United States Otis Elevator installation in Tianjin Li Shunde Hotel, still safe operation.
Today, the world's elevator company is still in the development and maintenance of the elevator, the elevator is also more and more rich and wonderful, all kinds of different forms, functions of modern elevator amazing: double car elevator not only saves the well road space, but also enhance the transport capacity; variable speed automatic sidewalk to save the time, without exception, all more convenient for people's life.
