The electric single girder overhead crane is composed of main beam, end beam, electric hoist and electric sports car, welded by steel plates and I-beams. It is suspended on the I-beam at the top of the factory building. The length of the console is from 0.5 to 1 m. The electric winch is located along the main beam. The bottom flange of the I-beam passes through for lifting work. It has the characteristics of lightweight structure, convenient to install and maintain, and is widely used in production workshops, warehouses, goods yards and other places. Vacancy level A3-A5.