Manufacturing Engineering Elevator Lift System Operation Copyright © Texas Education Agency, All rights reserved. 1

Bell Work Activity Please take out a sheet of paper and complete the following: A.How many times have you walked up five flights of stairs? How many times have you walked up 10 or more flights of stairs? B.Write a five-sentence essay about how you would feel if you were going to an important appointment on the 10th floor of a building, and upon your arrival, you found out the elevator was out of service. 2 Copyright © Texas Education Agency, All rights reserved.

A. There are several important terms and definitions students need to know. B. Complete the Elevator Lift System Matching Terms and Definitions handout. C. Students may work in groups. Warm-Up Activity Elevator Lift System Terms and Definitions 3 Copyright © Texas Education Agency, All rights reserved.

Overview The impact of the Industrial Revolution and the evolution of technology in the 1800s gave designers the ability to construct buildings to greater heights—more than ever before. The construction of new “skyscrapers’’ would not have been possible without advancements in elevator lift technology. 4 Copyright © Texas Education Agency, All rights reserved.

Theory of Operation of an Elevator Lift System An elevator lift system consists of several components and subsystems that work together to safely transport passengers within a building structure. The elevator car secures passengers for transportation. An electric motor is used to provide power to lift and lower the car. 5 Copyright © Texas Education Agency, All rights reserved.

Theory of Operation of an Elevator Lift System (continued) A cable system connects to the car on one end and to a set of counter weights on the other end— this balances the passenger load. The braking system allows the car to stop between floors and is an important safety feature on all elevators. Computerized control systems prioritize and sequence passenger requests and give passengers the ability to control the operation of each elevator car. 6 Copyright © Texas Education Agency, All rights reserved.

Elevator Lift System Terms Counterweight Elevator car Safety brake Cable system Electric motor Sheave Guide rails Shock absorber system Electromagnetic brake Computer control system Load sensor Door system Motion sensor Safety governor 7 Copyright © Texas Education Agency, All rights reserved.

Elevator Lift System Operational Layout 8 Copyright © Texas Education Agency, All rights reserved. Motor and controller Sheave Counter weight Cable assembly Elevator car Shock absorber Guide rails