[soniya]

 Types of Lift


Traction (Electric) lift

• Virtually limitless rise (high & mid rise)
  
• High speeds, but high installation cost
  

     Type of Traction lift

1. Geared Traction
   
2. Gearless Traction
   

Hydraulic lift

• Limited to heights of about 60 ft. (6 stories)
  
• Lower speeds
  
• Lower initial cost – higher power consumption
  

     Type of Hydraulic Lift

1. Holed Hydraulic
   
2. Holeless Hydraulic
   
3. Roped Hydraulic
   

To read more .. http://frontdesk.co.in/building-services...portation/

[FDArchitects]

Geared Traction lift

Geared Traction lift
Lift have a gearbox that is attached to the motor, which drives the wheel that moves the ropes.  Geared traction lift are capable of travel speeds up to 500 feet per minute. The maximum travel distance for a geared traction elevator is around 250 feet.

[FDArchitects]

Gearless Traction lift
Gear-less Traction Elevators have the wheel attached directly to the motor.  Gear-less traction elevators are capable of speeds up to 2,000 feet per minute and they have a maximum travel distance of around 2,000 feet so they are the only choice for high-rise applications.

Geared traction elevators are middle of the road in terms of initial cost, ongoing maintenance costs, and energy consumption. Gear-less traction elevators have a high initial cost, medium ongoing maintenance costs, and use energy a bit more efficiently than geared traction elevators.

[Er.sandeep jain]

Hydraulic lift 

Hydraulic elevators are supported by a piston at the bottom of the elevator that pushes the elevator up as an electric motor forces oil or another hydraulic fluid into the piston. 

The elevator descends as a valve releases the fluid from the piston. They are used for low-rise applications of 2-8 stories and travel at a maximum speed of 200 feet per minute. The machine room for hydraulic elevators is located at the lowest level adjacent to the elevator shaft.

[Er.sandeep jain]

Bottom Drive Lift
For building up to about 8 floors the lift machine room may located at / below the lowest floor

• The system is for less then 8 floors
  
• The car speed is limited to 1m/s
  
• The lift machine create more noise in lift shaft
  
• More maintenance cost
  
• Vibration is more difficult to isolate from structure
  
• Impose greater load on structure
  
• The system cost is more