The lifting motor is a motor used in cranes, which is intermittent, and it is characterized by frequent operation, braking system or turnover, and the size and orientation of the load are often changed. Therefore, the motor used in the crane is different from the explosion-proof motor, which must have high impact toughness and load capacity to meet the vibration or impact of the mechanical equipment. In order to better reduce the inertia force when starting and parking, the rotor is made longer and thinner.
Crane key with magnetic induction motor, there are two kinds of squirrel-cage and winding, they are basically composed of motor stator and rotor 2 main parts of the combination.
A part of the rotor of the wound motor is composed of a rotor core and three-phase symmetrical windings. The rotor winding is embedded in the pipe trench of the rotor iron core and connected in a star shape. The rotor windings 1 of each phase are connected by means of flat aluminum bars to three slip rings 2 of the drive shaft, which are connected to additional resistors 4.
The rotor winding of a winding type motor is connected to an additional resistor for complicated operation, load and impact. Therefore, winding type motors are commonly used on cranes.
