When the lifting motor of bridge crane starts, it usually does not run with no load. All the goods on it are loaded with weight. However, the starting performance of bridge crane is closely related to its starting torque. Therefore, when selecting the starting equipment of bridge crane, the equipment with large starting torque and small starting current should be considered. In the process of cargo lifting, loading and unloading, the accuracy of the parking position of the goods is required to be high, which requires the staff to realize speed regulation during the operation of the bridge crane, and the frequency of speed regulation is relatively large, so the traditional mechanical speed regulation cannot be used. A new type of electrical speed regulation method can achieve the accurate placement of goods.
