Motors for cranes winches hoists windlasses

The characteristics of the Motors For Cranes, sometimes also name as Lifting Motors, similar with Reliable Hoist Motors, Crane Travelling Motors 

Crane motor is characterized by repeated short-term working system, repeated short-term working system, small moment of inertia, large no-load current, fully closed self-cooling mode, etc.

1, bridge crane motor mainly includes the following aspects:

(1) Crane motors can be run for many times for short periods. The reference power continuity rate of JZR and JZR 2 series three-phase motors is 25%.

(2) Crane motor starting, braking and reversal frequently. The rotor is slender, the starting time is short, the starting loss is small.

(3) The motor of the crane supports frequent overload.

(4) The crane motor can withstand the regular vibration and impact of machinery, with strong mechanical strength.

(5) The crane motor working environment is dusty, the protection mode is closed.

2, the characteristics of the common crane motor

(1) According to the configuration size of the crane equipped with the motor, the motor is generally manufactured according to the S3 mark, the working system is S3, and the reference load duration rate FC is 40%.

(2) The fixed and moving system should be stable, and the power driving energy should be high.

(3). In the motor, the rotor should be accelerated and wear should be reduced as much as possible.

(4). In order to meet the need of maximum torque, easy to move under the condition of high gravity.

(5) Different types of crane motors have their own characteristics.

YZR and YZ series crane motor characteristics

Crane motor has the advantages of high efficiency, low noise, small vibration, light weight, low temperature rise, reliable performance, convenient installation and maintenance.

Crane motor needs frequent starting and braking, so the use of short-term working system. There are two specific structures. The utility model relates to a conical rotor structure, which can be braking through the combination of a conical rotor and a stator, and another slender rotor structure. Crane motor in the structure and ordinary motor is no different, are three-phase AC asynchronous motor, in the control circuit, crane motor and ordinary motor is different.

Crane motor YZR and YZ series three-phase asynchronous motors. YZR is a wound rotor motor and YZ is a squirrel cage rotor motor. The main features are as follows:

1, the crane motor is a closed structure to adapt to dusty places.

2, the crane motor to strengthen the mechanical structure, to adapt to frequent and significant mechanical vibration and impact.

3, the crane motor adopts a higher heat-resistant insulation grade, and allows a higher temperature rise.

Hoisting motor integrates the advantages of traditional hoisting metallurgy motor and frequency conversion motor, which can not only meet the needs of frequency conversion starting, braking, overload, reverse, overspeed, impact and vibration work, but also meet the requirements of frequency converter control, soft starting, four-quadrant operation, so as to reduce the impact on equipment and save energy. Rated voltage of hoisting motor is 380 V, rated frequency is 50 Hz, refer to working system S3~40%. The motor adopts forced ventilation cooling mode, so that the motor has a good cooling effect in a wide frequency range. The insulation class and protection class of the motor is the same as that of the YZ and YZR motors. The motor is mounted in the same size as the YZ and YZR motors, thus ensuring good interchangeability.

Crane motor is also a three-phase asynchronous motor, generally use alternating current, so the crane motor is also a kind of AC motor. The characteristics of the crane motor is that the crane motor has a rigid, support intermittent work, according to different use needs, the crane motor also has different types