The function of the elevator counterweight is to reduce the power of the traction motor and the torque on the traction wheel and worm gear.
The counterweight device of the elevator is located in the shaft and is connected to the car through the traction rope and the traction wheel. During the operation of the elevator, the counterweight device slides on the counterweight guide rail through the counterweight guide shoes to play a balancing role. The counterweight device consists of two parts: a counterweight frame and a counterweight iron block. Generally, passenger elevators use a 1:1 sling method counterweight device.
The counterweight is an integral part of the elevator traction system. Its function is to reduce the power of the traction motor and the torque on the traction wheel and worm gear. The structure of the counterweight has no fixed form, but no matter what form it is, four guide shoes should be installed at the four corners of the counterweight to ensure that the counterweight runs vertically along the counterweight guide rail when the elevator is running.
Types of elevators
1. Classification of uses
Can be divided into: passenger elevators, freight elevators, medical elevators, miscellaneous elevators, sightseeing elevators, vehicles Elevators, ship elevators, construction elevators and special purpose elevators.
2. Classification of driving methods
Can be divided into: AC elevator, DC elevator, hydraulic elevator, rack and pinion elevator, screw elevator.
3. Speed ??classification
Can be divided into: low-speed elevators, medium-speed elevators, high-speed elevators and ultra-high-speed elevators.
4. Classification with or without driver
It can be divided into two types: elevators with drivers and elevators without drivers.
5. Classification of control methods
Can be divided into: handle switch-controlled elevators, button-controlled elevators, signal-controlled elevators, collective control elevators, parallel-controlled elevators and group-controlled elevators.