What Stops an Elevator From Falling?
Proven Tales
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What Stops an Elevator From Falling?
30 просмотров · 9 дн. назад
Proven Tales
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30 просмотров · 9 дн. назад
The lights go out. Why doesn't the elevator simply fall?
Go behind the walls of a common traction elevator to see how suspension ropes, spring-applied brakes, overspeed governors, car safeties and buffers work together. We follow the force from the drive to the fixed guide rails, then explain what to do if an elevator stops between floors.
This episode uses simplified diagrams of common arrangements. Equipment, rescue features and maintenance requirements vary by installation.
CHAPTERS
00:00 The lights go out
00:23 The hidden traction machine
00:58 More than one rope
01:29 Power off. Brake on.
02:19 The overspeed governor
02:58 Safeties grip the rails
03:48 What buffers can do
04:17 Doors, sensors and interlocks
04:39 If the elevator stops
05:23 The quiet answer
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