Elevator traffic configuration concepts and development overview
Elevator traffic configuration concepts and development overview
An elevator traffic configuration concepts
Selection configuration is central to the elevator lift transport configuration. Elevator traffic configuration refers to elevator traffic system analysis, elevator traffic configuration design , selection elevators , elevator manufacturing, installation and maintenance of the entire process, and an elevator power design. From the architectural design perspective, elevator traffic configuration process as part of the building design process does not seem prominent , even in the past for quite a long period, often overlooked , that this work is optional. From a practical perspective, elevator traffic function as part of the overall function of the architectural design of the building, it is very important. Building efficient if there is no smooth vertical transport conveyor , that it is a what a feeling! Building on the same equal paralyzed ! With the construction and development of high-rise buildings and intelligent buildings , the elevator traffic configurations have become increasingly demanding , elevator traffic configuration technology is also becoming increasingly important.
2 lift transport configuration development overview
An elevator development
In the history of human production , elevators along with the development of production and productivity of the emergence and development. Lift (elevator, lift), a veritable elevator , appeared in 1889. Prior to this, it should be called a lift . Before that , it should be called the winch . Elevator development can be divided into the following five stages:
( 1 ) 13 centuries ago winch stage. In ancient times humans appeared winch. Literature, around 2600 BC , the ancient Egyptians built the pyramids using a winch handling stone .
( 2 ) to the front half of the 19th century elevator stage. During this period, the steam is replaced by a winch powered lift with a simple mechanical device. This period to lift hydraulic or pneumatic powered , safety and reliability is also no guarantee.
( 3) The second half of the 19th century elevator stage. From 1852 to play 1889 years ago, at this stage , prominent representatives are Ai Lisha · Gulipusi · otis (Otis) I and otis company's work . 1852 , otis summing made on the basis of previous experience safe lift ; 1853 established otis Brothers. In 1885, architect W · L · Jeni began to use steel structure , from the beginning of the construction of high-rise buildings of mankind .
Phase occurs after ( 4 ) 1889 elevator . December 1889 , the company developed the Otis lift with electric drive - a real elevator , installed in New York City Demarest building, running speed 0.5m / s. After the emergence of a large series of elevator technology . This phase lasted until the mid- 1970s .
( 5 ) Hyundai Elevator stage. The new lift from the beginning stages of 1975 , computer , group control and manifold is characterized by high-rise buildings to meet the needs of the high-speed, double-deck , no room , and many other rapid development of new technology direction , elevator traffic system has become an important subsystem of the building automation .
Second, the development of elevator technology
Elevator control technology development has undergone handle switch control, safety control knob , Micro Drive leveling control , assembly election , two-speed control AC and DC variable speed control , AC variable speed control and computer control of various stages. In China, the elevator used in 1965 before the original device , the control device to the electromagnetic component based. From 1975 onwards, to promote transistors and thyristors technology. After 1980 , instead of the electromagnetic relay device is a computer , power electronics and various sensing technology components . From the speed control means for controlling the amount by analog to digital control amount for the amount and the amount to become digital control system . Elevator control technology will develop in the direction of high-performance , namely SCR DC power supply high-speed elevators , AC variable speed elevators, high-speed elevators AC VVVF control , computer-controlled machine room less elevator lifts and developing .
Development of three , elevator traffic configuration
Elevator traffic configuration technology with the development of elevator engineering applications and development. Around the 1920s , the emergence of the statistical properties of the theory elevator traffic configuration. Statistical properties of the so-called elevator traffic refers to traffic study statistical regularities elevator system using statistical methods . By the late 1970s , the statistical properties of the theory elevator traffic configuration has the basic shape , although individual parts continues to develop and broaden . Since the 20th century, the mid-70s ( 1975 ) after the transition phase from the statistical characteristics of elevator traffic configuration to its dynamic characteristics of the theoretical stage . The so-called dynamic characteristics elevator traffic means: fuzzy logic, expert systems, neural networks and other intelligent control nonlinear , fuzzy technology research elevator transport system disturbances and other characteristics , to achieve optimal allocation of elevator traffic . Among them, the fuzzy control technology is the core technology of the elevator group control system . Research elevator traffic dynamic characteristics , is to study the elevator group control system design, configuration , operation and management, improve transport efficiency , making it part of the building ( especially intelligent building ) overall functionality. Due to the nature of elevator traffic study statistical variables, is to master the basic technical configuration of elevator traffic starting point , but also master the basic starting point of elevator traffic dynamics . Therefore, the study and master the statistical properties lift transport configuration theory that we often say that the elevator selection and configuration technology , we have to grasp the core content, but also to grasp the contents of the most urgent and promotion of elevator traffic configuration technology.
