Elevator Mechanical Design | Mechanical Lift Elevator | Mechanical Elevator System

In this elevator rescue training video, instructor Geoff Davis dives into the inner workings of elevators, specifically focusing on the electro-mechanical variety. The instructors highlight the key differences compared to hydraulic elevators - more moving parts, cables, and a counterweight system. They explain that the counterweight is designed to be heavier than the elevator's maximum capacity, ensuring it always remains above the car and preventing falls even during a complete safety system failure, while introducing components like hoist ropes and the sheave brake, offering a glimpse into the mechanics that keep elevators safe and functional.
Below is a transcript of this video:
The hoist way of an electro-mechanical is going to have a lot more stuff, a lot of moving parts, a lot more moving cables.
You have that counterweight moving up and now behind you, a lot more going on above these than a hydraulic.
The hoist ropes going up to the machine room. On the right. That's the approach that we'll go down to the elevator, going back up the a-driven machine room. Ropes going down off the machine down to the elevator.
This is how these things are anchored in the machine room themselves is literally just a piece of metal. The cables coming up through being bolted in.
If you have a complete and total malfunction of every safety system, on an elevator, and it's going to move freely. Those elevators [are] going to move up, not down because of this counterweights. A counterweight is equal to maximum capacity of the elevator plus 40%.
So, there's no way we're ever going to be able to tip that scale to put enough on an elevator to make it fall, because it’s heavier than the counterweight.
If you open the doors on one and that counterweight is in that back wall right in front of you. You know that that all there has to be all the way up.
On the right is a sheathe break there. If the elevator senses that is moving too fast that sheathe brake will collapse on the sheathe and physically make it not.
Video by: Fire Spotlight
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* The training views expressed in this video are those of the training instructors, and not Fire Spotlight. The actions in this video are inherently dangerous and could result in death; should the viewers choose to adopt any views expressed in this video, he/she is doing so at his/her own risk. Fire Spotlight encourages viewers to review his/her department's Standard Operating Procedures when adopting any new training views.