Electric hoist motor direct play a big part in the use process, if the motor electric hoist is equipped with double speed motor, so, it is fast and slow, its main role is to facilitate the speed of lifting objects can be freely controlled object, reduce the lift of the inertia, because of the fast large inertia.
The most widely used light lifting equipment for the electric hoist, has its characteristics, repeated short running time, frequent lifting, braking and reverse, often overload, the working environment is much dust and metal dust generated during operation, strong vibration, so in order to meet the need of electric hoist motor, as its main the power source should have the following characteristics:
1, the first motor hoist should have characteristics of intermittent cycle more than ordinary industrial motor, based on the load duration factor, contact number, lifting the number as the important parameters of the motor selection.
2, electric hoist motor should be better lifting torque and overload capacity,
3, electric hoist motor because the rotor has smaller moment of inertia, the rotor larger ratio of length to diameter, the line of sight brake less.
4, electric hoist motor should be maximum safe speed is rated speed several times, in general is about 2.5 times of the synchronous speed.
5, electric hoist motor should adapt to different working temperature and humidity, and the lowest with 2 grade insulation level.
Due to the continuous development of insulation technology, not only to increase the output of the motor design, and reduce the volume, heat capacity of the new electric hoist motor is more and more small, load capacity is more and more weak; due to the improvement of production automation, the motor always runs in frequent starting, braking, reverse and variable load in many ways, put forward higher request to the motor protection device.