by- PRIYANK PASAD +9699943434.

1. P.D.T PresentationP.D.T Presentation

2. ELEVATORSELEVATORS
 ApplicationApplication
 Basic structureBasic structure
 AdvantagesAdvantages
 DisadvantagesDisadvantages

3. Main uses of elevators.Main uses of elevators.
 Quicker transportation of people toQuicker transportation of people to
different levels or floors.different levels or floors.
 You get to desired floor without anyYou get to desired floor without any
trouble.trouble.
 Large offices, multistory buildings, storageLarge offices, multistory buildings, storage
houses, and all other kind of buildings usehouses, and all other kind of buildings use
lifts and elevators now a days.lifts and elevators now a days.

4. The Basic DesignThe Basic Design
 The basic design is a compartmentThe basic design is a compartment
that is somehow liftedthat is somehow lifted
 Two Types of Elevators:Two Types of Elevators:
• HydraulicHydraulic
• Rope-GearedRope-Geared

5. The Hydraulic ElevatorThe Hydraulic Elevator
 The car is moved up andThe car is moved up and
down using “a fluid pistondown using “a fluid piston
mounted inside a cylinder”.mounted inside a cylinder”.
 Consists of three parts:Consists of three parts:
• TankTank
• PumpPump
• ValveValve

6. Hydraulic Elevators DesignHydraulic Elevators Design
 The car is placed on a piston.The car is placed on a piston.
 the piston works on the pressure of the Fluidthe piston works on the pressure of the Fluid
Pumping System.Pumping System.
 A tank (off to the side) holds the fluid.A tank (off to the side) holds the fluid.
 When the valve closes, the car is lifted.When the valve closes, the car is lifted.
 When the valve opens, the car is lowered.When the valve opens, the car is lowered.

7. Hydraulic adv and dis-advHydraulic adv and dis-adv
 One Advantage-One Advantage-
1.Low cost1.Low cost
 Two Disadvantage-Two Disadvantage-
2.Must Have Enough Room2.Must Have Enough Room
3.Energy Inefficient3.Energy Inefficient

8. Rope-Geared ElevatorsRope-Geared Elevators
 These are the most popular types ofThese are the most popular types of
elevators.elevators.
 Rather than being pushed fromRather than being pushed from
below, these types of elevators arebelow, these types of elevators are
moved using cablesmoved using cables

9. Rope-Geared DesignRope-Geared Design
 Cables attach to the car and through a sheave.Cables attach to the car and through a sheave.
 The sheave is connected to an electric motor.The sheave is connected to an electric motor.
 Motor turns one way, elevator moves up. MotorMotor turns one way, elevator moves up. Motor
turns the other way, elevator moves down.turns the other way, elevator moves down.
 The ropes are connected to a counterweight.The ropes are connected to a counterweight.
 The counterweight system serves as a means forThe counterweight system serves as a means for
conserving energy.conserving energy.

10. Rope-Geared Design (Cont’d)Rope-Geared Design (Cont’d)
 Rails are used to guide the elevatorRails are used to guide the elevator
 Keep elevator and counterweights steady.Keep elevator and counterweights steady.
 Rope-geared elevators are much more efficientRope-geared elevators are much more efficient
and safer.and safer.

11. Rope-geared adv and dis-advRope-geared adv and dis-adv
 AdvantagesAdvantages
1.Energy efficient.1.Energy efficient.
2.Safer that hydraulic2.Safer that hydraulic
3.Quicker in working.3.Quicker in working.
 DisadvantagesDisadvantages
1.Higher expense1.Higher expense

12. Safety SystemsSafety Systems
 More ropes than neededMore ropes than needed
 Built-in brake systemsBuilt-in brake systems
 Governor prevents the elevator from falling to theGovernor prevents the elevator from falling to the
bottom of the shaft.bottom of the shaft.
Centrifugal force causes a brake system toCentrifugal force causes a brake system to
activate.activate.
 Also has an electromagnetic brake that is activated ifAlso has an electromagnetic brake that is activated if
the elevator loses power.the elevator loses power.
 Automated Brake System at the top and bottom of theAutomated Brake System at the top and bottom of the
shaft.shaft.

13. Moving To DestinationsMoving To Destinations
 Modern elevators use computers.Modern elevators use computers.
 Slows downSlows down
 Only answer “up calls” as going up and the sameOnly answer “up calls” as going up and the same
for going down.for going down.
 Modern “Smart” systems take into account theModern “Smart” systems take into account the
busiest parts of the day.busiest parts of the day.
 Press the floor you want in the lobby.Press the floor you want in the lobby.
 Load SensorLoad Sensor

14. --THANKYOU----THANKYOU--