In 1857, a passenger lift was installed in a department store located on Broadway, corner of Broome Street in New York City. Steam moved it up five floors in under a minute. Back then, that was fast. In contrast to that, today orange county elevator service in tallest buildings, such as the Sears Tower in Chicago, quickly rise 412 meters (1353 feet) in less than a minute.
Currently, the tallest building world, the Burj Khalifa Tower in Dubai, which is 828 m high has lifts from the Otis Elevator Company climbing the longest distance in the world: 504 meters; also has access lift on the world's highest: 638 meters; and lift the world's fastest double cabin: 10 meters per second.
In modern lifts, there are other mechanisms. If the exterior door is automatic, that is opens by itself, one of the blades is fitted with cabin skate retractable opens the gate. If exterior doors are manual or semi-automatic (they opens for people to enter and close by themselves), car doors incorporate a thrusting skate pulley to allow the lock to open the outer door.
The first model was built by Ivan Kulibin and installed in Winter Palace in 1793, while several years later another Kulibin variant was installed in Arkhangelsk, near Moscow. In 1823, a cabin upgrade was inaugurated in London. In 1851, a man named Waterman invented the first prototype forklift. It was a simple platform attached to a cable to raise and lower goods and people.
Cruise control mechanism comprises two pulleys, one installed in an engine room and another vertically aligned with the first in the bottom of a hole. Both passes a steel cable whose ends are connected, one to a fixed point on a frame of cabs, and also to a lever system whose end is at the top of a frame. The cable is attached to a car at all times and is completely independent of traction cables, that is, not involved in securing the car and counterweight.
The control system operates lift by electronic means in charge of running the direction of movement and selecting the floors in which it must stop. In 1925, the Otis Elevator Company Elevator Company invented the first control system with memory for groups of lifts, allowing automation and bypassing the default system.
Currently, lifts operate controls with electronic microprocessors using artificial intelligence algorithms to determine how to manage the response to requests for coordinating the various teams to work together. It was also invented by Otis in 1979. The boxes detect system errors, which in case of failure is displayed by an error code so that the lift mechanic knows the reason for stopping.
Keep in mind that an lift has multiple safety devices to prevent any accidents and if any device fails, the elevator is automatically stopped. Any old lift has contacts on exterior doors, car doors, which break contact of cables. System security is a key element and to maximize this aspect several specific devices are used. An electromechanical door interlock helps access to the floors, making it impossible to open all doors except the floor in the cabin.
Currently, the tallest building world, the Burj Khalifa Tower in Dubai, which is 828 m high has lifts from the Otis Elevator Company climbing the longest distance in the world: 504 meters; also has access lift on the world's highest: 638 meters; and lift the world's fastest double cabin: 10 meters per second.
In modern lifts, there are other mechanisms. If the exterior door is automatic, that is opens by itself, one of the blades is fitted with cabin skate retractable opens the gate. If exterior doors are manual or semi-automatic (they opens for people to enter and close by themselves), car doors incorporate a thrusting skate pulley to allow the lock to open the outer door.
The first model was built by Ivan Kulibin and installed in Winter Palace in 1793, while several years later another Kulibin variant was installed in Arkhangelsk, near Moscow. In 1823, a cabin upgrade was inaugurated in London. In 1851, a man named Waterman invented the first prototype forklift. It was a simple platform attached to a cable to raise and lower goods and people.
Cruise control mechanism comprises two pulleys, one installed in an engine room and another vertically aligned with the first in the bottom of a hole. Both passes a steel cable whose ends are connected, one to a fixed point on a frame of cabs, and also to a lever system whose end is at the top of a frame. The cable is attached to a car at all times and is completely independent of traction cables, that is, not involved in securing the car and counterweight.
The control system operates lift by electronic means in charge of running the direction of movement and selecting the floors in which it must stop. In 1925, the Otis Elevator Company Elevator Company invented the first control system with memory for groups of lifts, allowing automation and bypassing the default system.
Currently, lifts operate controls with electronic microprocessors using artificial intelligence algorithms to determine how to manage the response to requests for coordinating the various teams to work together. It was also invented by Otis in 1979. The boxes detect system errors, which in case of failure is displayed by an error code so that the lift mechanic knows the reason for stopping.
Keep in mind that an lift has multiple safety devices to prevent any accidents and if any device fails, the elevator is automatically stopped. Any old lift has contacts on exterior doors, car doors, which break contact of cables. System security is a key element and to maximize this aspect several specific devices are used. An electromechanical door interlock helps access to the floors, making it impossible to open all doors except the floor in the cabin.
No comments:
Post a Comment