how the elevator works l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
How The Elevator Works PowerPoint Presentation
Download Presentation
How The Elevator Works

Loading in 2 Seconds...

play fullscreen
1 / 15

How The Elevator Works - PowerPoint PPT Presentation


  • 1683 Views
  • Uploaded on

How The Elevator Works By Joseph Mackay Plaxco The University of the South Sewanee, TN 37383 Why? I find the elevator “cool.” Phobia when younger Gets people to destinations fast. Large cities wouldn’t be the same. Different Types Freight Elevators Stage Elevators The Basic Design

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'How The Elevator Works' - libitha


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
how the elevator works

How The Elevator Works

By Joseph Mackay Plaxco

The University of the South

Sewanee, TN 37383

slide2
Why?
  • I find the elevator “cool.”
  • Phobia when younger
  • Gets people to destinations fast.
  • Large cities wouldn’t be the same.
different types
Different Types
  • Freight Elevators
  • Stage Elevators
the basic design
The Basic Design
  • The basic design is a compartment that is somehow lifted
  • Two Types of Elevators:
    • Hydraulic
    • Rope-Geared
the hydraulic elevator
The Hydraulic Elevator
  • The car is moved up and down using “a fluid piston mounted inside a cylinder” (Harris).
  • Consists of three parts:
    • Tank
    • Pump
    • Valve
hydraulic elevators a closer look
Hydraulic ElevatorsA Closer Look
  • The car is placed on a piston.
  • Fluid Pumping System
  • A tank (off to the side) holds the fluid.
  • When the valve closes, the car is lifted.
  • When the valve opens, the car is lowered.
diagram of hydraulic elevator
Diagram of Hydraulic Elevator
  • The following link is from the website “How Stuff Works” written by Tom Harris.
    • How Elevators Work - Hydraulic
hydraulic disadvantages
Hydraulic Disadvantages
  • Two Disadvantages
    • Must Have Enough Room
    • Energy Inefficient
rope geared elevators
Rope-Geared Elevators
  • These are the most popular types of elevators.
  • Rather than being pushed from below, these types of elevators are moved using cables
rope geared design
Rope-Geared Design
  • Cables attach to the car and through a sheave.
  • The sheave is connected to an electric motor.
  • Motor turns one way, elevator moves up. Motor turns the other way, elevator moves down.
  • The ropes are connected to a counterweight.
  • The counterweight system serves as a means for conserving energy.
rope geared design cont d
Rope-Geared Design (Cont’d)
  • Rails are used to guide the elevator
  • Keep elevator and counterweights steady.
  • Rope-geared elevators are much more efficient and safer.
diagram of rope geared elevator
Diagram of Rope-GearedElevator
  • The following link came from the “How Stuff Works” webpage written by Tom Harris
    • Rope-Geared Elevator Diagram
safety systems
Safety Systems
  • More ropes than needed
  • Built-in brake systems
  • Governor prevents the elevator from falling to the bottom of the shaft.

Centrifugal force causes a brake system to activate.

  • Also has an electromagnetic brake that is activated if the elevator loses power.
  • Automated Brake System at the top and bottom of the shaft.
moving to destinations
Moving To Destinations
  • Modern elevators use computers.
  • Slows down
  • Only answer “up calls” as going up and the same for going down.
  • Modern “Smart” systems take into account the busiest parts of the day.
  • Press the floor you want in the lobby.
  • Load Sensor
works cited
Works Cited
  • Harris, Tom. “How Elevators Work”.

www.howstuffworks.com/elevator

2002.