According to the driving mode, the AC elevator is divided into: an elevator with an AC induction motor as the driving force. According to the drag mode, it can be divided into AC single speed, AC double speed, AC voltage and speed regulation, and AC variable voltage and frequency conversion speed regulation. 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: 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 lift. Screw elevator: process the plunger of the straight-top elevator into rectangular threads, then install a large 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 in which the car rises or falls. 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 to directly drive elevators, but they have basically disappeared. Motors are classified according to speed by speed reducer. There is no strict speed classification for elevators. China is customarily classified according to the following method. 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.
What should I pay attention to when buying a passenger elevator?

At the same time when purchasing elevator brands, you should pay attention to the following major issues:

1. Confirmation of elevator type:
At the beginning of the planning period of the building, the purpose of the building should be clarified, because the types of elevators used in buildings for different purposes of hotels, restaurants, office buildings, hospitals, residences, or industrial and mining enterprises often vary greatly. After the purpose of the building is determined, analyze the passenger flow based on its building area, floor (height), the flow of people entering and leaving, the location of the elevator in the building and other factors to determine the elevator speed and load (the load when the elevator car is fully loaded) ), the number of elevators required

2 Drawing of elevator civil works:
After the elevator type, speed, load capacity, number of units, number of stops, total height of the trip, etc. are determined, the architectural design department can be entrusted to design the blueprint. Here we must clarify the elevator civil engineering (mainly elevator shaft) part, the design department It is necessary to provide the same type of standard civil engineering drawings with professional elevator manufacturers, and draw the elevator civil engineering drawings in combination with the different structures of the elevator shaft of the building, such as brick structure, concrete structure, brick concrete structure or steel structure.