All Types of Elevators
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Hydraulic elevators are used extensively in buildings up to five or six stories high. These elevators—which can operate at speeds up to 46 meters (150 ft) per minute—do not use the large overhead hoisting machinery the way geared and gearless systems do. Instead, a typical hydraulic elevator is powered by a piston that travels inside a cylinder. An electric motor pumps oil into the cylinder to move the piston. The piston smoothly lifts the elevator cab. Electrical valves control the release of the oil for a gentle descent.
Gearless Traction Electric Elevator
The gearless traction electric elevator could be employed in buildings of any height and operated at much higher speeds than steam-powered elevators. This design has proven so durable that even now when a building is modernized while the elevator control system is replaced with the most up-to-date electronics. It is rarely necessary to replace a well-maintained gearless machine.
Geared Traction Elevator
As the name implies, the electric motor in this design drives a worm and gear-type reduction unit, which turns the hoisting sheave. While the lift rates are slower than in a typical gearless elevator, the gear reduction offers the advantage of requiring a less powerful motor to turn the sheave. These elevators typically operate at speeds from 38 to 152 meters (125-500 ft) per minute and carry loads of up to 13,600 kilograms (30,000 lb). An electrically controlled brake between the motor and the reduction unit stops the elevator, holding the car at the desired floor level.
Double Deck Elevator
Double-deck elevators save time and space in high-occupancy buildings by mounting one car upon another. One car stops at even floors and the other stops at the odd floors. Depending on their destination, passengers can mount one car in the lobby or take an escalator to a landing for the alternate car.
The observation elevator puts the cab on the outside of the building. Glass-walled elevator cars allow passengers to view the cityscape or the building’s atrium as they travel. By eliminating the hoistways, the observation elevator also offers owners, architects, and builders valuable space-saving advantages. An observation elevator is an excellent addition to all building types, including hotels, shopping centers, office buildings, hospitals, and observation towers, and offers incredible views through its transparent windows, thereby upgrading the value and prestige of any building.
These elevators are specially constructed to withstand the rigors of heavy loads. Standard capacities range from 1360 kilograms (3000 lb) up to 5440 kilograms (12,000 lb). These elevators are rated according to load categories, with Class “A” being for hand trucks, Class “B” for carrying automobiles, and Class “C1” for elevators with the capacity to carry a commercial truck.
Residential elevators use modern hydraulics to produce a smooth, quiet ride while occupying a minimum amount of space. These hydraulic systems are quiet, producing about the same amount of sound as a typical refrigerator, which makes them well suited for residential use. They can be operated at any hour without causing the disturbance. The compact design allows the elevator to be installed in the amount of space required for an average-sized closet.
TIPS FOR RIDING ELEVATOR SAFELY
Your safety means everything to us. In our plants, at job sites, and trough promoting safety in community, we work hard to ensure that every passenger’s trip is safe and smooth. You can help by following these safety tips every time you ride.
When Approaching Elevators, Follow these Guidelines:
- Know about your destination.
- Push the elevator call button one for the direction you want to go.
- Look or listen for the signal announcing your car’s arrival.
- Stand aside for excising passengers. Wait for the next car if arrived car is full.
- Don’t try to stop closing doors with anything including hands, feet’s, canes, etc. wait for the next cabin car.
- Take the stairs if there is a fire or other situation that could lead to a disruption in electrical services.
When Entering & Exiting Elevators, Follow these Guidelines:
- Enter and Exit carefully. Passenger nearest to doors should move first.
- Once on board, quickly press the button for your floor and move to the back of the car to make room for other passengers.
- Hold children and pets firmly.
- Stand clear of the doors, keeping clothes and carry-owns away from the opening.
- Push and hold the “Door Open” button if doors need to be held open. Or ask someone to push the button for you.
When Riding on Elevators, Follow these Guidelines:
- Stand back from the doors.
- Hold the handrail, if available.
- Pay attention to the floor indicators and be prepared to exit at your destination.
- If the doors do not open when the elevator stops, push the “Door Open”
- If the doors still don’t open, ring the “Alarm” Button and /or use the telephone or intercom. Wait until qualified people can assist you.
Protect Yourself of the Elevator Stopped between Floors:
- Push or pull the “Alarm” button to call for assistance.
- The phone is for help if it is available. An intercom or Hands-free phone may be available over there.
- Follow the instructions for their use.
- Do not force to open the elevator doors. Don’t attempt to leave the elevator.
- Be patient. Help is on the way. You are safe and there is plenty of air. So relax and wait for help.