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Copyright © 2018 Shandong kaiyuan heavy machinery Co., Ltd.     鲁ICP备08106581号-3



China Heavy Machinery Association





Address:Yangliu Industrial Park, Xintai City, Tai'an, Shandong, China 271208

Contact:Bryant Zhao

Tel:  +86-538-6276276


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Professional Production lifting machinery

Three Phase AC Motor for Electric Cranes

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Gantry Crane and Overhead Crane Using Steel Wheel

What is the motor?

A motor is a rotary electric machine that converts electrical energy into mechanical energy, which mainly includes an electromagnet winding or a distributed stator winding and a rotating armature or rotor for generating a magnetic field. Under the action of the rotating magnetic field of the stator winding, it has a current in the armature squirrel cage aluminum frame and is rotated by the action of the magnetic field.


Motor Classification

DC motor

Generally refers to the DC brush motor, the benefits of the control speed is relatively simple, as long as the control voltage size has been able to control the total speed, but such motors should not be in high temperature, flammable and other environments, and because the motor needs to carbon Brush as part of the commutator (brush motor), so the need to regularly clean the carbon brush friction caused by dirt. At the same time, there are DC brushless motor, is a synchronous motor, relative to the brush, brushless motor because less carbon brush and shaft friction so more power is also relatively quiet, but the price is higher, but also need to add no additional Brush controller.


AC motor

It can be in high temperature, flammable and other environments, and do not have to clean the carbon brush, but in the control speed is more difficult, because the control of AC motor speed there are two ways: one is to use the inverter to control the frequency of alternating current, another Kind is the use of induction motor, with increased internal resistance of the way, at the same frequency of alternating current to reduce the motor speed, control the voltage will only affect the motor torque. General household motor voltage 110V and 220V, etc., in industrial applications, there are 380V or 440V and other types.


Features of Motor

1, the conductive conductor in the magnetic field will be the role of force. Its force direction with the current direction, the direction of the magnetic induction.

2, the motor consists of two parts of the rotor and stator. The part that can be rotated is called the rotor; the fixed part is called the stator.

3, when the DC motor coil to the equilibrium position, the coil will no longer turn, only to change the direction of the current coil, the coil can continue to turn down. This function is achieved by commutator. The commutator is made of a pair of semicircular iron pieces which change the direction of the current in the equilibrium position by contact with the brush. The actual life of the motor brush has a lot of pairs, and will use electromagnetic fields to produce strong magnetic field.

4, the motor structure is simple, easy to control, small size, high efficiency, power can be large or small, is widely used in daily life and various industries. It is represented by M in the circuit diagram. When the motor is working, it converts electrical energy into mechanical energy.


Gantry Crane and Overhead Crane Using Steel Wheel



1. More than 10 years crane manufacture experience.

2. Unique International standard indoor warehouse for crane manufacture.

3. We have the senior crane design engineers, with professional design. And very expert crane mechanical and electrical installation engineer team.

4. Our crane sales team will help to supervise the crane whole production and seaport loading, we prefer to confirm every small details.

5. We know how to shipment the crane in a very compact and reasonable way, save sea freight for our oversea crane client.


Packaging Details:


1. Electric parts are packed in iron box to reduce distortion in conveying;
2. Steel structures are fastened by bolts.
Land Transportation & Shipping:
1. If the size of whole crane are suitable for container ship, usually by container;
2. If the size is too big, usually by bulk ship or by container after truncation;
3. Transport ways are based on reducing cost for you and keep the crane performance!

Delivery Day

Within 30 work days after receiving the deposit



Gantry Crane and Overhead Crane Using Steel Wheel



§ Professional mechanical engineers and electrical engineers provide suitable solution only for you!    

§ Engineers available to service machinery overseas. 

§ We can offer about 12 moths maintenance service.           

§ Recieved customer's message about the quality problems,related after sale service managers will help customer solve problems immediately.


Gantry Crane and Overhead Crane Using Steel Wheel
Shandong Kaiyuan Heavy Machinery Co., Ltd.
a company specialized in hoisting machinery manufacturing, was established in 2006. It is a member unit of China Heavy Machinery Association. The company has passed ISO9001 International quality system certification and has independent intellectual property rights and industrial property rights, Class A manufacture license of special equipment and Class A special equipment installation and maintenance license.

The company covers an area of 70,000m2, including 30,000m2of plant construction area and 20,000m2 of outdoor area. It has various kinds of hoisting and handling equipment, with steel handling capacity of 10000t. The products are sold to 20 provinces throughout the country and exported to India, Ethiopia, Indonesia, Vietnam and Iran.

 In the new period of development, the company will continue adhering to the quality policy of advanced technology, product quality, courteous serviced, customer satisfaction to achieve development innovation, keeping pace with the times and joint development.


Gantry Crane and Overhead Crane Using Steel Wheel

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