Definition of elevator ‒ compendium of concepts and meanings
1. Definition of elevatorAn elevator or lift is a system of vertical transport designed to mobilize people or goods between different levels. It can be used either to ascend or descend in a building or an underground construction. Complies with mechanical, electrical and electronic parts that work together to achieve a safe means of mobility.
Two types, the electromechanical lift and the hydraulic lift, more properly called oleodynamic are primarily installed. Also referred to as hydraulic lifts to systems of locks on the navigation channels, such as the hydraulic lifts of the Canal du Centre in Belgium.
The first reference of a lift is in the works of the Roman architect Vitruvius, who says of Archimedes (c. 287 BC – c. 212 BC) was probably built a first lift in 236a.c... In some literary sources of later times, elevators were mentioned as cabs sustained with hemp rope and powered by hand or by animal. It is assumed that elevators of this type were installed in the monastery of Sinai, in Egypt.
In 1000, in the book of secrets by Ibn Khalaf al - Muradi, of Islamic Spain describes the use of an elevator as a lifting device, in order to raise a heavy weight to hit and destroy an fortaleza.1 in the 17TH century, some prototypes of elevators were in the buildings of palaces of England and France.
Ancient and medieval elevators used four-wheel-drive systems on the basis of the mechanism of the crane. The invention of another system based on transmission to screw, was perhaps the most important step on the elevator technology since antiquity, which finally led to the creation of the modern passenger lifts. The first model was built by Ivan Kulibin and installed at the Winter Palace in 1793, while several years later, another Kulibin elevator was installed in Arkhangelsk, near Moscow. In 1823, opens an "ascent booth" at Londres.2
In 1851, a such Waterman invented the first prototype of forklifts. It was a simple platform attached to a cable, for raising and lowering goods and people.
As tallest buildings were constructed, people felt less inclined to long stair climbing. Department stores began to flourish, and arose the need for a device that transferred to customers of a floor to another with minimal effort.
Forklift inspired an American from Vermont, Elisha G. Otis, to invent a lift with a toothed system, that could cushion the fall of the same where sustenance cable is cut. It was the first demonstration of a security system for passenger elevators. Strange that seems, Elisha Otis as designer talent was discovered while working as a master mechanic at a factory of frames of beds of Albany (New York State). He invented several devices that were saving work, and why he was sent to Yonkers (New York), where his fitness could be better. There he designed and built the first elevator with automatic safety mechanism, where would any fault in the cable. To 1853 he had established his own business manufacturing lifts, elevators Otis Elevator Company company, which still exists and is the first company of elevators in the world since it has 2.5 million elevators and escalators installed across the entire planet. The following year, Otis made the demonstration of this invention in an exhibition that was carried out in New York.3
On 30 August 1957 began the system of automatic doors in the passenger elevators, irrespective of the process of opening and closing the door manually.
Another type of lift is known as paternoster; It consists of a series of open booths, limited capacity, which move slowly by two contiguous holes. By one rise cabs, and upon reaching the top, change at another hole that fall in a continuous cycle, without stopping. passengers rise and fall up. It was very practical in places of high traffic of people between floors, although had security problems, so it was replaced with advantage by mechanical, much safer stairs
Lifts in the worldThe business soon realized the potential of the newly invented device, and in 1857 the first passenger elevator was installed in a large warehouse located on Broadway Avenue, corner Broome Street, in the city of New York. Moved to steam, this elevator climbed five floors in less than a minute. Back then, that was quick. In contrast with that, today lifts one of the highest in the world, the Sears Tower, in Chicago, buildings rise rapidly 412 m (1,353 ft) in less than one minuto.3 currently, the tallest in the world, the Burj Khalifa Tower in Dubai, with 828 m. of height, has elevator company Otis Elevator Company that uploaded the distance most of the world's longest: 504 meters; also has access by elevator located at higher altitudes in the world: 638 m; and the elevator with faster cab in the world: 10 meters per second.
2 Concept of elevatorThe elevator word derived from the verb Ascend, which etymologically comes from latin "scandere" which means climbing, and where "ACE" has the meaning of "towards", therefore elevator is going up, that climbs upwards.
The lifts are devices that allow you to soar. The first elevators that could perform human ingenuity, were hoists, rising by human force, since several men were turning a huge lathe, where going by winding a rope, which allowed the rise of the load. In Rome, Vitruvius would have built an elevator toward the year 263 BC
The first safe lift, since until then ropes were cut with ease and endanger the cargo, was devised in 1854 and its author was Elisha Otis, an employee of an American beds factory, who exhibited in New York, showing that to cut the ropes, shock, cushioning to tell the appliance with a toothed system.
The current lifts are electric and have a computerized system, which indicates them among other things, the speed, the point of braking and Acceleration, taking more or less ability to withstand weight, what should be indicated.
They have a booth of varying dimensions, which rises and falls between two steel beams. The cabin and counterweight are supported by cables passing through a pulley, which is a large wheel with slots. The counterweight acts contrary to the cabin movement: when the first upload another downward and vice versa. Some are closed and other glazed or panoramic view that let you see outside. Others are submarines, called hidroladores.
3 Meaning of elevatorThe elevator is a machine that is available in apartment buildings or houses, that have several floors and serves as the main route of transportation of individuals and goods, allowing them through him, up or down through the floors to have the building or House in question. Take the elevator from the bottom and climbs up to the fourth floor which is where is the Office of claims that you are looking for.
The design of the lifts is always vertical to comply satisfactorily with the purpose of climbing or descending through the floors of a building.
It should be noted, that the elevator is composed of electrical, mechanical and electronic elements that together, they allow the above-mentioned mobility by building at the same time guaranteeing a safe movement.
The cabin is the part in which people ascend or descend from the different floors, in both its dimensions depend on the type of building that concerned, because that usually in Office buildings, unlike those intended for family housing, elevators, are really wide to support a top of people moving, basically, because the transit of people is most important during the whole day.
Inside the cabin a pushbutton Panel containing buttons marked with different floors, more an alarm and a stop button that users can handle from the cabin to prevent movement of the elevator is ready.
The elevator is accessed through a door, which can be manual or automatic, opening every once the elevator stops on the floor, meanwhile, to maintain the safety of this appliance is that if the elevator is not yet stopped on the floor that you want to take, the manual door can not be opened, that has a mechanism that locks it.
Security is therefore a basic and very important question in elevators in its design is a topic that is highly designed down to the smallest detail and so is that if some of the contacts fails, in almost all elevators will be stopping their March to avoid accidents.
4. What is elevatorDefinition of elevator and elevator
Vehicle intended to raise, lower or move, by means of a special device, goods in warehouses, buildings, people, etc. Its main difference with an elevator is the speed and the maintenance.
Vehicle in which the energy necessary for lifting the load is transmitted by a pump with electric drive motor that transmits a hydraulic fluid to a cylinder that acts directly or indirectly on the cabin, (multiple engines, pumps or cylinders can also be used).