1 / 15

How The Elevator Works

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

libitha
Download Presentation

How The Elevator Works

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. How The Elevator Works By Joseph Mackay Plaxco The University of the South Sewanee, TN 37383

  2. Why? • I find the elevator “cool.” • Phobia when younger • Gets people to destinations fast. • Large cities wouldn’t be the same.

  3. Different Types • Freight Elevators • Stage Elevators

  4. The Basic Design • The basic design is a compartment that is somehow lifted • Two Types of Elevators: • Hydraulic • Rope-Geared

  5. 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

  6. 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.

  7. Diagram of Hydraulic Elevator • The following link is from the website “How Stuff Works” written by Tom Harris. • How Elevators Work - Hydraulic

  8. Hydraulic Disadvantages • Two Disadvantages • Must Have Enough Room • Energy Inefficient

  9. 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

  10. 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.

  11. 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.

  12. Diagram of Rope-GearedElevator • The following link came from the “How Stuff Works” webpage written by Tom Harris • Rope-Geared Elevator Diagram

  13. 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.

  14. 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

  15. Works Cited • Harris, Tom. “How Elevators Work”. www.howstuffworks.com/elevator 2002.

More Related