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Q:

What is the difference between a "hydro" and a "traction" elevator?

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• A "hydraulic" elevator utilizes a motor and a pump to raise the piston out of the ground pushing the elevator up and down the shaft. It uses an electric valve to control the direction and speed of the piston. • A "traction" elevator uses sheaves and cables to move an elevator up and down the shaft. It utilizes a counterweight that balances out the load so that the motor does not have to work as hard. The motors can be either AC or DC depending on the type of drive or generator the elevator uses to convert building power into controllable power to move the elevator. more
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A hydraulic elevator transforms power into motion by utilizing an electric motor and also a pump to raise a piston from the street pushing the elevator up and down the shaft. It uses a difficult electric shutoff to control the direction as well as rate of the piston.
 
A traction elevator uses sheaves and also cable televisions to relocate an elevator backwards and forwards the shaft. Depending upon the sort of traction there is normally (99 % of the time) a counterweight balances out the load to ensure that the motor does not need to work as hard. The electric motors can be either DC or Air Conditioning relying on the kind of drive or generator the elevator uses to transform structure power right into controllable power to move the elevator.

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