Variable Frequency Cranes Characteristics

The frequency conversion crane is based on the traditional crane and improves the speed control performance by improving the performance of the crane motor.For the crane equipment, this type of motor, can greatly improve its speed regulation performance, this is the frequency conversion crane.

Frequency Conversion Crane Origin

With the development of economy and the progress of technology, the requirements for the crane's speed-adjusting ability in production operations are constantly increasing.

The traditional crane motor is characterized by the need to equip the electric rotor and brush on the asynchronous motor of the wound rotor, and a large number of relays and contactors can be used to achieve speed regulation. However, the disadvantage of this speed regulation method is that the collector ring and the brush must be frequently maintained, and they are prone to failure. Due to the large number of components used and the large amount of on-site maintenance, the overall performance of the speed control system is poor. Cranes using traditional speed control systems can no longer meet operational requirements in some applications where the speed control performance is required to be high.

With the development of ac frequency conversion speed regulation technology, the application is more and more extensive, which brings a new solution to this problem. Ac frequency conversion speed regulation technology is applied in the squirrel cage asynchronous motor, which makes the motor work to obtain higher speed regulation performance, and the motor has the advantages of simple structure, reliable work and convenient maintenance. For the crane equipment, this type of motor, can greatly improve its speed regulation performance, this is the frequency conversion crane.

Frequency Conversion Crane Characteristics

• First, the variable frequency crane can control the start-up flexibly, realize stable startup from 0HZ to 50HZ, can set acceleration deceleration time, and control the operation speed more accurately.

• Secondly, by adopting a deceleration stop and acceleration mode, a smooth start-up and stop action can be realized, which greatly reduces the impact on the crane's brakes, speed reducers, wire ropes and other force components, and extends the service life of the machine.
• Third, when the inverter crane starts, the current will not increase sharply, reducing the current impact on the grid, reducing the waste of power and achieving energy conservation.
• Fourth, a vector-type inverter is equipped on the main hook so that the lifting mechanism of the crane can run smoothly.

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