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What are the main classifications of passenger elevators

What are the main classifications of passenger elevators

Passenger elevators: elevators designed to transport passengers require complete safety facilities and certain interior decorations.
A vertical elevator powered by an electric motor is equipped with a box-shaped pod for passengers in multi-story buildings. Fixed lifting equipment serving the specified floors. It has a car that runs between at least two rows of vertical rigid guide rails. The size and structure of the car are convenient for passengers to enter and exit or load and unload cargo. It is customary to regard elevators as the general term for vertical transportation vehicles in buildings regardless of their driving methods.
Classification
According to the driving mode
AC elevator: An elevator that uses an AC induction motor as a driving force. According to the drag mode, it can be divided into AC single speed, AC double speed, AC voltage and speed regulation, AC variable voltage and frequency conversion speed regulation, etc.
DC elevator: an elevator that uses a DC motor as the driving force. The rated speed of this type of elevator is generally above 2.00m/s. Hydraulic elevator: Generally, an electric pump is used to drive the liquid to flow, and the plunger makes the elevator car lift.
Rack and pinion elevator: an elevator in which the guide rail is processed into a rack, the car is equipped with a gear that meshes with the rack, and the motor drives the gear to rotate to make the car go up and down.
Screw elevator: process the plunger of the straight-top elevator into rectangular threads, then install the big nut with thrust bearing on the top of the cylinder, and then drive the nut to rotate through the reducer (or belt) through the motor, so that the screw is lifted An elevator with a car ascending or descending.
For elevators driven by linear motors, the power source is linear motors. In the early days of elevators, steam engines and internal combustion engines were used as power to directly drive elevators, but they have basically disappeared. Motor by reducer
Sort by speed
There is no strict speed classification for elevators. China is customarily classified according to the following methods.
Low-speed elevator: often refers to elevators with a speed lower than 1.00m/s.
Medium-speed elevator: often refers to elevators with a speed of 1.00 m/s to 2.00 m/s.
High-speed elevator: often refers to elevators with a speed greater than 7m/s.

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