Introduction of permanent magnet for elevator traction machine
China is the largest elevator manufacturer, consumer and exporter. The China Elevator Association has calculated that elevators reach 5% of the height of the entire building, which means that elevators are one of the largest required equipment in high-rise buildings.
Permanent magnet synchronous traction machine has occupied the mainstream of the market, therefore, the demand for elevator traction machine itself is still high.
Traction elevators are mainly composed of traction system, guidance system, gate system, car, balance system, electric drive system, power control system and safety protection system. The traction machine transmits and transmits power to make the elevator system work normally.
The traction machine is composed of a motor, a brake, a coupling, a reduction gear box, a traction wheel and a guide wheel. According to the type of motor, the traction machine can be divided into DC traction machine and AC traction machine, and then AC traction machine can be divided into AC gear traction. In fact, permanent magnet gearless traction machine is small in size, runs smoothly at low speed, and is maintenance-free. Low noise and low noise are widely used in the elevator industry.
About elevator traction machine magnet-arc square neodymium magnet
Elevator traction machine magnet
The high-performance rare earth neodymium magnet is one of the core components of the elevator traction machine. As the excitation source of the traction machine, irreversible magnetic flux loss will bring safety hazards to the entire elevator system.
Elevator traction machine magnets generally use N35SH, N38SH, N40SH and N33UH high-performance grades of neodymium iron boron. To a certain extent, the explosive growth of elevator traction machines has stimulated the development of elevators.