What is crane motor

Crane motor is a part of gantry crane and overhead crane, which is a kind of equipment for electrical energy into mechanical energy. It is through the electric coil (i.e. stator winding) to produce a rotating magnetic field and its function in the form of rotary torque.

The crane motor is divided into DC crane motor and AC crane motor by using different power. The crane motor power system most of the AC crane motor can be synchronous or asynchronous crane motor.

The crane motor is mainly composed of stator and rotor, the direction of the force movement in the magnetic field is related to the current direction and the direction of the magnetic induction line. The principle of the crane motor is the effect of the magnetic field on the current force, so that the crane motor rotation.

Crane motor types and advantages

In the crane field, the crane motor is AC three phase asynchronous motor.

Conical type rotor motor

This type crane motor is used for single girder overhead crane, grúa de arriba de la viga doble, grúa pórtico de una sola viga, Jib crane.
The conical type three-phase asynchronous crane motor is the stator of the electric crane motor for the three-phase scattered type distribution winding. The rotor is a cage guide.

(a) Soft start type crane motor

Motor Brand: Nanjing special brand

Advantage of soft star type crane motor

• (1) Locked rotor current is smaller than other crane motors, which can prevent crane motor burning;
• (2) The starting current is small, it can improve the impact of the starting, the operation noise is small, and the service life of the main control AC contactor is prolonged;
• (3) It can adapt to frequent start, power saving effect is remarkable;
• (4) Achieve soft start, it can increase the crane frame and the life of the plant.

(b) Three-in-one type motor

Motor Brand: SZW/SEW/ABM

Advantages of Three-in-one-motor:

"Three in one" reducer crane motor is reducer, crane motor and brake in one, with the crane motor shaft parallel output, compact structure, large transmission torque, stable work, low noise, long life and so on.

Wound type crane motor

This type crane motor is used for double girder overhead crane and doble viga de la grúa de pórtico y cabrestante eléctrico.

The wound type three-phase asynchronous crane motor is the stator of the electric crane motor for the three-phase scattered type distribution winding. The rotor coil ends are not directly lead to short-circuit, but lead to the start control device of slip ring.

Motor brand: Jiamusi / New Dali

Advantage of wound type crane motor

• Good starting performance (starting current is only 1.5 - 2.5 times rated current)
• Large starting torque
• Speed stability

Dongqi crane motor configuration

Noted: LD------China style single girder overhead crane
HD------European style single girder overhead crane
LH------China style double girder overhead crane
LHO------European style double girder overhead crane
QD------China style heavy duty double girder overhead crane
QDX------ European style heavy duty double girder overhead crane
MH------China style single girder gantry crane
MHO------European style single girder gantry crane
MG------China style double girder gantry crane
MGO------European style double girder gantry crane

If you need the crane and have some especial requirements for crane motor, contact me freely. We can design the crane drawing for you. Cotact us for more informaiton.

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