LDA type electric single beam crane is composed of the main beam, end beam, electric hoist and operating mechanism welded by steel plate and I-steel. The electric hoist runs along the lower flange of the main beam I-steel to complete the lifting work of items. It has the characteristics of light structure, convenient installation and maintenance, and is widely used in different occasions such as factories, warehouses, storage yards and so on. Operation mode with ground handle, wireless remote control and driver's cab three operating forms. The cab is open and closed Seed. The running motor can be selected according to user requirements soft start motor and frequency conversion speed regulation, the crane starts smoothly, the operation is safe and reliable.